/* roulang page: index */
:root{
  --void:#070B14;
  --panel:#0B1120;
  --abyss:#05080F;
  --aurora:#2FE0C0;
  --signal:#FF7A45;
  --nebula:#8B7BFF;
  --ink:#E9EFFA;
  --muted:#9FAEC7;
  --faint:#6C7B95;
  --line:rgba(148,178,255,0.14);
  --glass:rgba(255,255,255,0.055);
  --glass-strong:rgba(255,255,255,0.085);
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow-card:0 18px 40px -22px rgba(0,0,0,0.85), inset 0 1px 0 rgba(255,255,255,0.08);
  --shadow-primary:0 0 0 1px rgba(47,224,192,0.55), 0 12px 30px -12px rgba(47,224,192,0.55);
  --ease:cubic-bezier(0.22,0.61,0.36,1);
  --dur:200ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--void);
  color:var(--ink);
  font-family:'PingFang SC','HarmonyOS Sans','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
::selection{background:rgba(47,224,192,0.28);color:#fff;}
:focus-visible{outline:2px solid var(--aurora);outline-offset:3px;border-radius:6px;}

.container{
  width:100%;
  max-width:1220px;
  margin:0 auto;
  padding:0 24px;
}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  transition:background var(--dur) var(--ease), border-color var(--dur) var(--ease), backdrop-filter var(--dur) var(--ease);
  border-bottom:1px solid transparent;
  background:transparent;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,0.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:74px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(140deg, rgba(47,224,192,0.22), rgba(139,123,255,0.18));
  border:1px solid rgba(47,224,192,0.35);
  box-shadow:0 0 18px -6px rgba(47,224,192,0.6);
  color:var(--aurora);
  font-size:15px;
}
.brand-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:0.02em;
  color:var(--ink);
  white-space:nowrap;
}
.brand-text em{
  font-style:normal;
  color:var(--aurora);
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
  flex:1;
}
.main-nav a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 12px;
  font-size:14.5px;
  color:var(--muted);
  border-radius:8px;
  transition:color var(--dur) var(--ease);
  white-space:nowrap;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:6px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--aurora),rgba(47,224,192,0));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.main-nav a:hover{color:var(--aurora);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--aurora);}
.main-nav a.active::after{transform:scaleX(1);}
.header-cta{flex-shrink:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--radius-xs);
  font-size:15px;
  font-weight:600;
  letter-spacing:0.01em;
  transition:transform var(--dur) var(--ease), background var(--dur) var(--ease), box-shadow var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), opacity var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#3FEFCE,#22C4A8);
  color:#04241F;
  box-shadow:var(--shadow-primary);
}
.btn-primary:hover{
  background:linear-gradient(135deg,#5CF5D8,#2CD4B6);
  box-shadow:0 0 0 1px rgba(47,224,192,0.7), 0 16px 38px -12px rgba(47,224,192,0.72);
  transform:translateY(-1px);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,224,192,0.45),0 8px 18px -12px rgba(47,224,192,0.5);}
.btn-ghost{
  background:transparent;
  border:1px solid var(--line);
  color:var(--muted);
}
.btn-ghost:hover{
  border-color:rgba(47,224,192,0.6);
  color:var(--ink);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.6;pointer-events:none;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--aurora);
}
.link-arrow i{transition:transform var(--dur) var(--ease);font-size:12px;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:132px 0 96px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:-20% -10% auto -10%;
  height:820px;
  background:
    radial-gradient(680px 420px at 18% 8%, rgba(47,224,192,0.16), transparent 68%),
    radial-gradient(560px 380px at 78% 0%, rgba(139,123,255,0.14), transparent 70%),
    radial-gradient(420px 300px at 52% 42%, rgba(255,122,69,0.07), transparent 72%);
  pointer-events:none;
  z-index:0;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 22%, rgba(233,239,250,0.55), transparent),
    radial-gradient(1.2px 1.2px at 32% 62%, rgba(233,239,250,0.38), transparent),
    radial-gradient(1.6px 1.6px at 58% 18%, rgba(233,239,250,0.45), transparent),
    radial-gradient(1.2px 1.2px at 74% 54%, rgba(233,239,250,0.32), transparent),
    radial-gradient(1.5px 1.5px at 88% 30%, rgba(233,239,250,0.42), transparent);
  opacity:.7;
  pointer-events:none;
  z-index:0;
}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  font-size:12.5px;
  letter-spacing:0.06em;
  color:var(--aurora);
  background:rgba(47,224,192,0.08);
  border:1px solid rgba(47,224,192,0.3);
  margin-bottom:22px;
}
.eyebrow i{font-size:11px;}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-0.02em;
  margin-bottom:20px;
}
.hero h1 span{color:var(--aurora);}
.hero-sub{
  font-size:clamp(16px,1.5vw,18px);
  color:var(--muted);
  line-height:1.8;
  max-width:34em;
  margin-bottom:30px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:34px;
}
.trust-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px 26px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.trust-item{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:13.5px;
  color:var(--muted);
}
.trust-item i{color:var(--aurora);font-size:13px;}
.trust-item b{
  font-variant-numeric:tabular-nums;
  color:var(--ink);
  font-weight:700;
}

.hero-visual{
  position:relative;
  border-radius:var(--radius-lg);
  padding:16px;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.hero-visual::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(160deg, rgba(7,11,20,0.72), rgba(7,11,20,0.55) 48%, rgba(7,11,20,0.88));
  z-index:1;
}
.hero-card{
  position:relative;
  z-index:2;
  border-radius:18px;
  overflow:hidden;
  background:var(--panel);
  border:1px solid rgba(148,178,255,0.18);
  box-shadow:0 24px 50px -26px rgba(0,0,0,0.9);
}
.hero-card img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}
.hero-card-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:14px 16px;
  background:rgba(11,17,32,0.92);
  border-top:1px solid var(--line);
}
.hero-card-meta strong{
  font-size:14px;
  font-weight:700;
  color:var(--ink);
}
.hero-card-meta span{
  font-size:12px;
  color:var(--faint);
  font-variant-numeric:tabular-nums;
}
.hero-float{
  position:absolute;
  z-index:3;
  right:-6px;
  bottom:-14px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 16px;
  border-radius:14px;
  background:rgba(11,17,32,0.9);
  border:1px solid rgba(47,224,192,0.35);
  box-shadow:0 16px 34px -18px rgba(0,0,0,0.9), inset 0 1px 0 rgba(255,255,255,0.08);
  backdrop-filter:blur(10px);
}
.hero-float i{color:var(--signal);font-size:15px;}
.hero-float span{font-size:12.5px;color:var(--muted);line-height:1.5;}
.hero-float b{display:block;font-size:15px;color:var(--ink);font-variant-numeric:tabular-nums;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:44px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(22px,2.6vw,34px);
  font-weight:700;
  line-height:1.28;
  letter-spacing:-0.015em;
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:4px;
  background:linear-gradient(180deg,var(--aurora),rgba(47,224,192,0.2));
}
.section-head p{
  margin-top:10px;
  padding-left:16px;
  font-size:14.5px;
  color:var(--muted);
  max-width:46em;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:0.02em;
  color:var(--aurora);
  background:rgba(47,224,192,0.08);
  border:1px solid rgba(47,224,192,0.3);
  white-space:nowrap;
}
.tag-purple{
  color:#B9AEFF;
  background:rgba(139,123,255,0.1);
  border-color:rgba(139,123,255,0.38);
}
.tag-orange{
  color:#FFA17B;
  background:rgba(255,122,69,0.1);
  border-color:rgba(255,122,69,0.38);
}

/* ---------- 痛点 ---------- */
.pain{
  position:relative;
  padding:88px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg, rgba(11,17,32,0.65), rgba(7,11,20,0.4));
}
.pain-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px 24px;
  margin-top:8px;
}
.pain-item{
  display:flex;
  gap:18px;
  padding:26px 24px;
  border-radius:var(--radius-md);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.06);
  transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
  position:relative;
  overflow:hidden;
}
.pain-item::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg, rgba(47,224,192,0.5), rgba(47,224,192,0));
}
.pain-item:nth-child(even){transform:translateY(18px);}
.pain-item:hover{border-color:rgba(47,224,192,0.4);background:var(--glass-strong);}
.pain-num{
  font-size:13px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  letter-spacing:0.08em;
  color:var(--faint);
  padding-top:3px;
  flex-shrink:0;
}
.pain-q{
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  color:var(--ink);
  margin-bottom:8px;
}
.pain-a{
  font-size:13.5px;
  color:var(--muted);
  line-height:1.7;
}
.pain-close{
  grid-column:1 / -1;
  margin-top:26px;
  padding:20px 24px;
  border-left:3px solid var(--aurora);
  background:linear-gradient(90deg, rgba(47,224,192,0.08), transparent);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:15px;
  color:var(--muted);
}
.pain-close b{color:var(--ink);font-weight:600;}

/* ---------- 方案卡 ---------- */
.sol-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:24px;
}
.sol-main{
  position:relative;
  padding:34px 32px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  display:flex;
  flex-direction:column;
  transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
  overflow:hidden;
}
.sol-main::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, rgba(47,224,192,0.75), rgba(139,123,255,0.35), transparent);
}
.sol-main:hover{transform:translateY(-4px);border-color:rgba(47,224,192,0.4);}
.sol-main h3{
  font-size:22px;
  font-weight:700;
  margin:14px 0 12px;
  line-height:1.4;
}
.sol-main p{
  font-size:14.5px;
  color:var(--muted);
  line-height:1.8;
  margin-bottom:20px;
}
.sol-points{
  display:grid;
  gap:10px;
  margin-bottom:24px;
}
.sol-points li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--muted);
}
.sol-points li i{color:var(--aurora);font-size:12px;}
.sol-figure{
  margin-top:auto;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
}
.sol-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.sol-side{
  display:grid;
  gap:24px;
  grid-template-rows:1fr 1fr;
}
.sol-card{
  position:relative;
  padding:28px 26px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
  display:flex;
  flex-direction:column;
  overflow:hidden;
}
.sol-card::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, rgba(47,224,192,0.55), transparent);
}
.sol-card:hover{transform:translateY(-4px);border-color:rgba(47,224,192,0.42);background:var(--glass-strong);}
.sol-card .sn{
  font-size:12px;
  font-weight:700;
  letter-spacing:0.14em;
  color:var(--faint);
  font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.sol-card h3{font-size:18px;font-weight:700;margin-bottom:10px;line-height:1.45;}
.sol-card p{font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:18px;}
.sol-card .link-arrow{margin-top:auto;}

/* ---------- 数据 ---------- */
.stats{
  position:relative;
  padding:96px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.stats::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(7,11,20,0.94), rgba(5,8,15,0.96));
}
.stats::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(115deg, transparent 42%, rgba(47,224,192,0.1) 50%, transparent 58%);
  pointer-events:none;
}
.stats .container{position:relative;z-index:2;}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  overflow:hidden;
}
.stat{
  background:rgba(11,17,32,0.9);
  padding:32px 26px;
  transition:background var(--dur) var(--ease);
}
.stat:hover{background:rgba(15,23,42,0.95);}
.stat-num{
  font-size:clamp(32px,3.4vw,44px);
  font-weight:800;
  line-height:1.05;
  letter-spacing:-0.02em;
  font-variant-numeric:tabular-nums;
  color:var(--aurora);
  margin-bottom:10px;
}
.stat:nth-child(2) .stat-num{color:var(--signal);}
.stat:nth-child(3) .stat-num{color:#B9AEFF;}
.stat-label{
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:6px;
}
.stat-note{
  font-size:12.5px;
  color:var(--faint);
  line-height:1.6;
}

/* ---------- 最新信息（CMS） ---------- */
.news-grid{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:32px;
  align-items:start;
}
.news-feature{
  display:block;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.news-feature:hover{transform:translateY(-4px);border-color:rgba(47,224,192,0.42);}
.news-feature .thumb{
  position:relative;
  aspect-ratio:16/9;
  background:linear-gradient(140deg,#101A2E,#0A1020 60%,#0E1B2C);
  overflow:hidden;
}
.news-feature .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 420ms var(--ease);
}
.news-feature:hover .thumb img{transform:scale(1.03);}
.news-feature .body{padding:24px 26px 26px;}
.news-feature h3{
  font-size:20px;
  font-weight:700;
  line-height:1.5;
  margin:12px 0 10px;
}
.news-feature p{
  font-size:14px;
  color:var(--muted);
  line-height:1.8;
  margin-bottom:16px;
}
.meta-row{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:12.5px;
  color:var(--faint);
  font-variant-numeric:tabular-nums;
}
.meta-row span{display:inline-flex;align-items:center;gap:6px;}
.news-rows{display:flex;flex-direction:column;}
.news-row{
  display:flex;
  gap:18px;
  padding:18px 4px;
  border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease), border-color var(--dur) var(--ease);
  align-items:flex-start;
}
.news-row:first-child{padding-top:0;}
.news-row:hover{background:rgba(255,255,255,0.028);border-bottom-color:rgba(47,224,192,0.32);}
.news-row .thumb-sm{
  width:132px;
  flex-shrink:0;
  aspect-ratio:16/9;
  border-radius:var(--radius-sm);
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(140deg,#101A2E,#0A1020);
}
.news-row .thumb-sm img{width:100%;height:100%;object-fit:cover;}
.news-row h3{
  font-size:15.5px;
  font-weight:600;
  line-height:1.55;
  margin:6px 0 6px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-row p{
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.empty-state{
  grid-column:1 / -1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  padding:64px 24px;
  border-radius:var(--radius-lg);
  border:1px dashed rgba(148,178,255,0.24);
  background:rgba(255,255,255,0.03);
  text-align:center;
}
.empty-state i{font-size:26px;color:var(--faint);}
.empty-state p{font-size:14.5px;color:var(--muted);}
.empty-state .page-dots{display:flex;gap:8px;margin-top:4px;}
.empty-state .page-dots span{
  width:26px;height:5px;border-radius:3px;background:rgba(148,178,255,0.16);
}
.empty-state .page-dots span:first-child{background:rgba(47,224,192,0.5);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 4px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  transition:color var(--dur) var(--ease);
  min-height:44px;
}
.faq-q:hover{color:var(--aurora);}
.faq-q i{
  flex-shrink:0;
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--muted);
  font-size:11px;
  transition:transform var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.faq-item.open .faq-q{color:var(--aurora);}
.faq-item.open .faq-q i{transform:rotate(180deg);color:var(--aurora);border-color:rgba(47,224,192,0.5);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 280ms var(--ease), opacity var(--dur) var(--ease);
  opacity:0;
}
.faq-item.open .faq-a{opacity:1;}
.faq-a-inner{
  padding:0 4px 24px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  max-width:52em;
}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;
  padding:40px 40px;
  border-radius:var(--radius-lg);
  background:
    radial-gradient(600px 220px at 12% 0%, rgba(47,224,192,0.16), transparent 70%),
    rgba(255,255,255,0.055);
  border:1px solid rgba(47,224,192,0.28);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.1), 0 26px 60px -34px rgba(0,0,0,0.9);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;top:-70px;
  width:260px;height:260px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(47,224,192,0.18), transparent 65%);
  pointer-events:none;
}
.cta-band h2{
  font-size:clamp(20px,2.3vw,27px);
  font-weight:700;
  line-height:1.35;
  margin-bottom:8px;
  letter-spacing:-0.01em;
}
.cta-band p{
  font-size:14.5px;
  color:var(--muted);
  max-width:36em;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 隐私说明 ---------- */
.privacy-note{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:8px;
}
.privacy-item{
  padding:22px 22px;
  border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:rgba(255,255,255,0.032);
}
.privacy-item h3{
  font-size:15px;
  font-weight:600;
  margin-bottom:8px;
  display:flex;
  align-items:center;
  gap:9px;
  color:var(--ink);
}
.privacy-item h3 i{color:var(--aurora);font-size:13px;}
.privacy-item p{font-size:13.5px;color:var(--muted);line-height:1.75;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--abyss);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  margin-top:96px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.foot-brand .brand{margin-bottom:16px;}
.foot-brand p{
  font-size:13.5px;
  color:var(--muted);
  line-height:1.85;
  max-width:30em;
  margin-bottom:16px;
}
.foot-tags{display:flex;flex-wrap:wrap;gap:8px;}
.foot-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:16px;
  letter-spacing:0.02em;
}
.foot-col ul{display:grid;gap:11px;}
.foot-col a{
  font-size:13.5px;
  color:var(--muted);
  transition:color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.foot-col a:hover{color:var(--aurora);padding-left:3px;}
.foot-col p{font-size:13.5px;color:var(--muted);line-height:1.85;}
.foot-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 30px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:var(--faint);
}
.foot-bottom a{color:var(--faint);}
.foot-bottom a:hover{color:var(--aurora);}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:8px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  font-size:12.5px;
  color:var(--muted);
  transition:border-color var(--dur) var(--ease), color var(--dur) var(--ease);
  min-height:40px;
}
.to-top:hover{border-color:rgba(47,224,192,0.5);color:var(--aurora);}

/* ---------- 表单弹层 ---------- */
.modal{
  position:fixed;
  inset:0;
  z-index:120;
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.modal.is-open{display:flex;}
.modal-mask{
  position:absolute;
  inset:0;
  background:rgba(4,7,14,0.72);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}
.modal-card{
  position:relative;
  width:100%;
  max-width:480px;
  max-height:90vh;
  overflow-y:auto;
  border-radius:20px;
  background:rgba(11,17,32,0.96);
  border:1px solid rgba(148,178,255,0.2);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.09), 0 40px 80px -40px rgba(0,0,0,0.95);
  padding:32px 30px 30px;
  animation:modalIn 220ms var(--ease);
}
@keyframes modalIn{
  from{opacity:0;transform:translateY(14px);}
  to{opacity:1;transform:translateY(0);}
}
.modal-close{
  position:absolute;
  top:14px;right:14px;
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  border:1px solid var(--line);
  color:var(--muted);
  transition:color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.modal-close:hover{color:var(--ink);border-color:rgba(47,224,192,0.5);}
.modal-card h3{
  font-size:21px;
  font-weight:700;
  margin-bottom:8px;
  padding-right:40px;
}
.modal-card > p{
  font-size:13.5px;
  color:var(--muted);
  line-height:1.75;
  margin-bottom:22px;
}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:12px;
  color:var(--muted);
  margin-bottom:7px;
  letter-spacing:0.02em;
}
.field input,
.field select,
.field textarea{
  width:100%;
  min-height:44px;
  padding:11px 14px;
  border-radius:10px;
  background:rgba(255,255,255,0.05);
  border:1px solid var(--line);
  color:var(--ink);
  transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  outline:none;
  appearance:none;
}
.field textarea{min-height:84px;resize:vertical;line-height:1.7;}
.field input::placeholder,
.field textarea::placeholder{color:#586780;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:rgba(47,224,192,0.75);
  box-shadow:0 0 0 3px rgba(47,224,192,0.16);
}
.field select option{background:#0B1120;color:var(--ink);}
.check-row{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:12.5px;
  color:var(--muted);
  line-height:1.7;
  margin:18px 0 20px;
}
.check-row input{
  width:16px;height:16px;
  margin-top:3px;
  flex-shrink:0;
  accent-color:#2FE0C0;
}
.check-row a{
  color:var(--aurora);
  text-decoration:underline;
  text-underline-offset:3px;
}
.form-tip{
  display:none;
  margin-top:14px;
  padding:11px 14px;
  border-radius:10px;
  font-size:13px;
  color:#9BF0DC;
  background:rgba(47,224,192,0.1);
  border:1px solid rgba(47,224,192,0.35);
}
.form-tip.is-show{display:block;}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tab{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:90;
  padding:6px 8px calc(6px + env(safe-area-inset-bottom));
  background:rgba(7,11,20,0.94);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
}
.mobile-tab ul{
  display:flex;
  align-items:stretch;
  justify-content:space-around;
}
.mobile-tab a{
  position:relative;
  flex:1;
  min-height:52px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11px;
  color:var(--faint);
  border-radius:10px;
  transition:color var(--dur) var(--ease);
}
.mobile-tab a i{font-size:16px;}
.mobile-tab a.active{color:var(--aurora);}
.mobile-tab a.active::before{
  content:"";
  position:absolute;
  top:-6px;left:22%;right:22%;
  height:2px;
  border-radius:2px;
  background:var(--aurora);
  box-shadow:0 0 10px rgba(47,224,192,0.8);
}
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  z-index:85;
  height:60px;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:0 16px;
  background:rgba(7,11,20,0.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .main-nav a{padding:0 9px;font-size:13.5px;}
  .hero-grid{gap:36px;}
  .sol-grid{grid-template-columns:1fr;}
  .sol-side{grid-template-rows:auto auto;grid-template-columns:1fr 1fr;}
}
@media (max-width:1023px){
  .site-header{display:none;}
  .mobile-bar{display:flex;}
  .mobile-tab{display:block;}
  body{padding-bottom:76px;}
  .hero{padding:96px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-float{right:8px;bottom:-10px;}
  .section{padding:72px 0;}
  .stats{padding:72px 0;}
  .pain{padding:68px 0;}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-grid{grid-template-columns:1fr;}
  .privacy-note{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .site-footer{margin-top:72px;padding-top:48px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .pain-grid{grid-template-columns:1fr;}
  .pain-item:nth-child(even){transform:none;}
  .sol-side{grid-template-columns:1fr;}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .section-head{margin-bottom:32px;}
  .hero-actions .btn{width:100%;}
  .trust-bar{gap:12px 20px;}
  .hero-card-meta{flex-direction:column;align-items:flex-start;gap:4px;}
  .news-row .thumb-sm{width:104px;}
}
@media (max-width:520px){
  .hero{padding:84px 0 64px;}
  .hero h1{font-size:28px;}
  .stats-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .modal{padding:0;}
  .modal-card{
    max-width:none;
    height:88vh;
    max-height:88vh;
    margin-top:auto;
    border-radius:20px 20px 0 0;
    padding:26px 20px 28px;
    animation:modalUp 240ms var(--ease);
  }
  @keyframes modalUp{
    from{opacity:0;transform:translateY(40px);}
    to{opacity:1;transform:translateY(0);}
  }
  .hero-float{display:none;}
  .news-row .thumb-sm{width:92px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:0.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.01ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: article */
:root{
  --void:#070B14;
  --panel:#0B1120;
  --deepfoot:#05080F;
  --cyan:#2FE0C0;
  --cyan-deep:#12A88F;
  --orange:#FF7A45;
  --purple:#8B7BFF;
  --text:#E9EFFA;
  --text-2:#9FAEC7;
  --text-3:#6C7B95;
  --line:rgba(148,178,255,0.14);
  --line-strong:rgba(148,178,255,0.24);
  --glass:rgba(255,255,255,0.055);
  --glass-2:rgba(255,255,255,0.09);
  --r-card:18px;
  --r-btn:11px;
  --r-input:10px;
  --shadow-card:0 18px 42px -24px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.08);
  --shadow-cta:0 10px 30px -10px rgba(47,224,192,.55);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--void);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(680px 420px at 12% -6%, rgba(47,224,192,.13), transparent 68%),
    radial-gradient(560px 380px at 88% 4%, rgba(139,123,255,.10), transparent 70%),
    radial-gradient(720px 480px at 50% 108%, rgba(255,122,69,.07), transparent 72%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
  position:relative;
  z-index:1;
}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-stuck{
  background:rgba(7,11,20,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:74px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  min-height:44px;
}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,rgba(47,224,192,.9),rgba(18,168,143,.55));
  color:#04120F;
  font-size:15px;
  box-shadow:0 0 0 1px rgba(47,224,192,.45),0 8px 22px -12px rgba(47,224,192,.9);
}
.brand-text{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text);
}
.brand-text em{
  font-style:normal;
  color:var(--cyan);
  font-weight:700;
  margin-left:2px;
  font-size:14px;
  letter-spacing:.04em;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
  margin-right:auto;
  flex-wrap:nowrap;
}
.main-nav a{
  position:relative;
  padding:9px 12px;
  font-size:14px;
  color:var(--text-2);
  border-radius:9px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
  min-height:44px;
  display:inline-flex;
  align-items:center;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),rgba(47,224,192,0));
  opacity:0;
  transform:scaleX(.4);
  transform-origin:left center;
  transition:opacity .2s ease,transform .2s ease;
}
.main-nav a:hover{color:var(--cyan);background:rgba(255,255,255,.04)}
.main-nav a:hover::after{opacity:1;transform:scaleX(1)}
.main-nav a.active{color:var(--cyan)}
.main-nav a.active::after{opacity:1;transform:scaleX(1)}
.header-cta{flex:0 0 auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-primary{
  background:linear-gradient(135deg,#3CF0CE 0%,#1FBFA4 62%,#12A88F 100%);
  color:#04140F;
  border-color:rgba(47,224,192,.7);
  box-shadow:var(--shadow-cta);
}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 14px 38px -10px rgba(47,224,192,.72)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px -10px rgba(47,224,192,.7)}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line-strong);
}
.btn-ghost:hover{border-color:rgba(47,224,192,.6);color:#fff;background:rgba(47,224,192,.06)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.6;pointer-events:none}

/* ---------- tags ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  font-size:12px;
  letter-spacing:.02em;
  border-radius:999px;
  color:var(--cyan);
  border:1px solid rgba(47,224,192,.42);
  background:rgba(47,224,192,.08);
  white-space:nowrap;
}
.tag-purple{color:#B6ACFF;border-color:rgba(139,123,255,.45);background:rgba(139,123,255,.09)}
.tag-orange{color:#FFA382;border-color:rgba(255,122,69,.45);background:rgba(255,122,69,.09)}

/* ---------- article layout ---------- */
.page-main{padding-top:104px;position:relative;z-index:1}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb .sep{color:rgba(108,123,149,.7)}
.breadcrumb .current{
  color:var(--text-2);
  max-width:46vw;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

.article-head{
  position:relative;
  border-radius:22px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow-card);
  margin-bottom:34px;
}
.article-head-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.34;
  filter:saturate(.85);
}
.article-head-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(115deg,rgba(7,11,20,.96) 22%,rgba(7,11,20,.72) 62%,rgba(7,11,20,.92) 100%);
}
.article-head-inner{
  position:relative;
  padding:44px 42px 38px;
}
.article-head h1{
  font-size:clamp(26px,3.5vw,42px);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.02em;
  margin:14px 0 0;
  max-width:24em;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 18px;
  margin-top:20px;
  font-size:13px;
  color:var(--text-3);
  padding-top:20px;
  border-top:1px solid var(--line);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta i{color:rgba(47,224,192,.8);font-size:12px}
.article-lead{
  margin-top:22px;
  padding:16px 20px;
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
  font-size:15px;
  color:var(--text-2);
  line-height:1.8;
  max-width:60em;
}

.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:36px;
  align-items:start;
}

.reading-card{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow-card);
  padding:34px 32px 40px;
  position:relative;
}
.reading-card::before{
  content:"";
  position:absolute;
  top:0;left:24px;right:24px;
  height:1px;
  background:linear-gradient(90deg,rgba(47,224,192,0),rgba(47,224,192,.55),rgba(47,224,192,0));
}
.article-body{max-width:800px;margin:0 auto;font-size:16px;line-height:1.8;color:#CFD9EA}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em;font-size:16px;line-height:1.8;color:#CFD9EA}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2.2vw,26px);
  font-weight:700;
  line-height:1.35;
  color:var(--text);
  margin:1.9em 0 .8em;
  padding-left:16px;
  letter-spacing:-.01em;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;
  width:4px;height:1.05em;
  border-radius:3px;
  background:linear-gradient(180deg,var(--cyan),rgba(47,224,192,.35));
}
.article-body h3{
  position:relative;
  font-size:18px;
  font-weight:600;
  color:var(--text);
  margin:1.6em 0 .6em;
  padding-left:18px;
}
.article-body h3::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:10px;height:2px;
  border-radius:2px;
  background:rgba(47,224,192,.85);
}
.article-body h4{font-size:16px;font-weight:600;color:var(--text);margin:1.4em 0 .5em}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(47,224,192,.35);transition:border-color .2s ease,color .2s ease}
.article-body a:hover{color:#7FF3DE;border-bottom-color:rgba(47,224,192,.85)}
.article-body ul,
.article-body ol{margin:0 0 1.2em;padding-left:2px}
.article-body ul li,
.article-body ol li{
  position:relative;
  padding-left:24px;
  margin-bottom:.5em;
  color:#CFD9EA;
  line-height:1.8;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:6px;top:.72em;
  width:7px;height:7px;
  border-radius:2px;
  transform:rotate(45deg);
  background:rgba(47,224,192,.75);
}
.article-body ol{counter-reset:olc}
.article-body ol li{counter-increment:olc}
.article-body ol li::before{
  content:counter(olc);
  position:absolute;
  left:0;top:.12em;
  width:20px;height:20px;
  border-radius:6px;
  display:grid;place-items:center;
  font-size:12px;
  font-variant-numeric:tabular-nums;
  color:var(--cyan);
  background:rgba(47,224,192,.1);
  border:1px solid rgba(47,224,192,.32);
}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line);
  border-left:3px solid var(--cyan);
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  width:100%;
  height:auto;
  border-radius:14px;
  margin:1.4em 0 .6em;
  border:1px solid var(--line);
}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:13px;color:var(--text-3);margin-top:8px;text-align:center}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.5em 0;
  font-size:14px;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.article-body th,
.article-body td{
  border:1px solid var(--line);
  padding:11px 14px;
  text-align:left;
  line-height:1.7;
}
.article-body th{background:rgba(255,255,255,.06);color:var(--text);font-weight:600;font-size:13px;letter-spacing:.02em}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.028)}
.article-body hr{border:0;height:1px;background:var(--line);margin:2em 0}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.92em;
  background:rgba(47,224,192,.1);
  border:1px solid rgba(47,224,192,.24);
  color:#9DF5E4;
  padding:1px 6px;
  border-radius:6px;
}

/* empty state */
.empty-state{
  text-align:center;
  padding:64px 24px;
  border-radius:16px;
  border:1px dashed var(--line-strong);
  background:rgba(255,255,255,.025);
}
.empty-state .empty-icon{
  width:56px;height:56px;
  margin:0 auto 18px;
  border-radius:16px;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);
  color:var(--text-3);
  font-size:20px;
}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:10px}
.empty-state p{font-size:14px;color:var(--text-2);margin-bottom:22px}

/* aside */
.article-aside{display:grid;gap:20px}
.aside-card{
  border-radius:16px;
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow-card);
  padding:22px 20px;
}
.aside-card h3{
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--text-2);
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.aside-card h3::before{
  content:"";
  width:3px;height:13px;border-radius:2px;
  background:var(--cyan);
}
.aside-list{display:grid;gap:4px}
.aside-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 10px;
  margin:0 -10px;
  border-radius:9px;
  font-size:14px;
  color:var(--text-2);
  transition:background .2s ease,color .2s ease;
  min-height:44px;
}
.aside-list a:hover{background:rgba(47,224,192,.07);color:var(--cyan)}
.aside-list a i{font-size:11px;opacity:.7}
.aside-help p{font-size:13px;color:var(--text-2);line-height:1.8;margin-bottom:16px}
.aside-meta{display:grid;gap:10px;font-size:13px;color:var(--text-3)}
.aside-meta div{display:flex;justify-content:space-between;gap:12px;padding-bottom:9px;border-bottom:1px dashed rgba(148,178,255,.12)}
.aside-meta div:last-child{border-bottom:0;padding-bottom:0}
.aside-meta strong{color:var(--text-2);font-weight:600}

/* related */
.section{margin-top:72px}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:28px;
}
.section-head h2{
  font-size:clamp(21px,2.4vw,28px);
  font-weight:700;
  letter-spacing:-.01em;
  display:flex;
  align-items:center;
  gap:12px;
}
.section-head h2::before{
  content:"";
  width:4px;height:22px;border-radius:3px;
  background:linear-gradient(180deg,var(--cyan),rgba(47,224,192,.3));
}
.section-head p{font-size:14px;color:var(--text-3);margin-top:8px;padding-left:16px}
.link-more{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--cyan);min-height:44px;
  transition:gap .2s ease;
}
.link-more:hover{gap:12px}
.link-more i{font-size:12px}

.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
  position:relative;
}
.rel-card::before{
  content:"";
  position:absolute;top:0;left:16px;right:16px;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.35),rgba(255,255,255,0));
  z-index:2;
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(47,224,192,.34);background:rgba(255,255,255,.075)}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#0B1120,#101A2E)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:16px;font-weight:600;line-height:1.5;color:var(--text)}
.rel-body p{font-size:13px;color:var(--text-2);line-height:1.7}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--text-3)}

.back-row{margin-top:36px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* cta */
.cta-band{
  margin-top:72px;
  border-radius:22px;
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(47,224,192,.13),rgba(11,17,32,.9) 46%,rgba(139,123,255,.12));
  box-shadow:var(--shadow-card);
  padding:38px 36px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  width:340px;height:340px;
  right:-90px;top:-140px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(47,224,192,.22),transparent 68%);
}
.cta-band h2{font-size:clamp(20px,2.3vw,27px);font-weight:700;letter-spacing:-.01em}
.cta-band p{font-size:14px;color:var(--text-2);margin-top:10px;max-width:46em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}

/* privacy strip */
.privacy-strip{
  margin-top:40px;
  padding:18px 22px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.028);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:13px;
  color:var(--text-3);
}
.privacy-strip a{color:var(--cyan);border-bottom:1px solid rgba(47,224,192,.4);padding-bottom:1px}
.privacy-strip a:hover{color:#7FF3DE}

/* footer */
.site-footer{
  margin-top:96px;
  background:var(--deepfoot);
  border-top:1px solid var(--line);
  padding:60px 0 26px;
  position:relative;
  z-index:1;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.foot-brand p{
  margin:16px 0 18px;
  font-size:13px;
  line-height:1.85;
  color:var(--text-3);
  max-width:34em;
}
.foot-tags{display:flex;flex-wrap:wrap;gap:8px}
.foot-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--text-2);
  margin-bottom:16px;
}
.foot-col ul{display:grid;gap:2px}
.foot-col a{
  display:inline-flex;
  align-items:center;
  min-height:38px;
  font-size:14px;
  color:var(--text-3);
  transition:color .2s ease,transform .2s ease;
}
.foot-col a:hover{color:var(--cyan);transform:translateX(2px)}
.foot-col p{font-size:13px;line-height:1.9;color:var(--text-3)}
.foot-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:12px;
  color:var(--text-3);
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 14px;
  border-radius:10px;
  border:1px solid var(--line-strong);
  color:var(--text-2);
  font-size:13px;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.to-top:hover{color:var(--cyan);border-color:rgba(47,224,192,.55);background:rgba(47,224,192,.07)}
.to-top i{font-size:11px}

/* modal */
.modal-mask{
  position:fixed;
  inset:0;
  z-index:200;
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
  background:rgba(4,7,14,.72);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}
.modal-mask.is-open{display:flex}
.modal-card{
  width:100%;
  max-width:480px;
  max-height:90vh;
  overflow:auto;
  border-radius:20px;
  border:1px solid var(--line-strong);
  background:linear-gradient(180deg,rgba(15,22,38,.98),rgba(8,12,22,.99));
  box-shadow:0 40px 90px -30px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.1);
  padding:28px 26px 26px;
  position:relative;
}
.modal-close{
  position:absolute;
  top:14px;right:14px;
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  cursor:pointer;
  display:grid;place-items:center;
  transition:color .2s ease,border-color .2s ease;
}
.modal-close:hover{color:var(--cyan);border-color:rgba(47,224,192,.5)}
.modal-card h2{font-size:21px;font-weight:700;margin-bottom:8px}
.modal-card .modal-sub{font-size:13px;color:var(--text-3);margin-bottom:22px;line-height:1.75}
.field{margin-bottom:16px}
.field label{
  display:block;
  font-size:12px;
  letter-spacing:.02em;
  color:var(--text-2);
  margin-bottom:7px;
}
.field input,
.field select,
.field textarea{
  width:100%;
  min-height:44px;
  padding:11px 13px;
  font-size:14px;
  font-family:inherit;
  color:var(--text);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  transition:border-color .2s ease,box-shadow .2s ease;
  appearance:none;
}
.field textarea{resize:vertical;min-height:82px;line-height:1.7}
.field select{background-image:linear-gradient(45deg,transparent 49%,var(--text-2) 50%),linear-gradient(-45deg,transparent 49%,var(--text-2) 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input::placeholder,
.field textarea::placeholder{color:rgba(108,123,149,.85)}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:rgba(47,224,192,.75);
  box-shadow:0 0 0 3px rgba(47,224,192,.16);
}
.check-line{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:12px;
  color:var(--text-3);
  line-height:1.7;
  margin:6px 0 18px;
}
.check-line input{
  width:16px;height:16px;
  margin-top:3px;
  accent-color:#2FE0C0;
  flex:0 0 auto;
}
.check-line a{color:var(--cyan);border-bottom:1px solid rgba(47,224,192,.4)}
.modal-card .btn{width:100%}
.form-note{font-size:12px;color:var(--text-3);margin-top:14px;text-align:center;line-height:1.7}

/* mobile tabbar */
.mobile-tabbar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:95;
  display:none;
  background:rgba(7,11,20,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding:6px 4px calc(6px + env(safe-area-inset-bottom));
}
.mobile-tabbar ul{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:2px;
}
.mobile-tabbar a{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  min-height:52px;
  font-size:11px;
  letter-spacing:.02em;
  color:var(--text-3);
  border-radius:10px;
  transition:color .2s ease;
}
.mobile-tabbar a i{font-size:16px}
.mobile-tabbar a.active{color:var(--cyan)}
.mobile-tabbar a.active::before{
  content:"";
  position:absolute;
  top:-6px;left:18%;right:18%;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  box-shadow:0 0 12px rgba(47,224,192,.85);
}

@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:44px}
  .article-aside{position:sticky;top:98px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .header-inner{height:66px;gap:12px}
  .brand-text{font-size:17px}
  .brand-text em{font-size:13px}
  .page-main{padding-top:92px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-head-inner{padding:34px 26px 30px}
  .reading-card{padding:26px 22px 32px}
  .mobile-tabbar{display:block}
  body{padding-bottom:78px}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px}
  .section{margin-top:56px}
  .rel-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 22px;margin-top:56px}
  .article-lead{font-size:14px}
  .breadcrumb .current{max-width:60vw}
  .site-footer{margin-top:64px;padding-top:44px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-col ul{grid-template-columns:1fr 1fr;display:grid}
  .article-body p,.article-body li{font-size:15px}
  .article-body table{font-size:13px;display:block;overflow-x:auto}
  .privacy-strip{font-size:12px}
}
@media (max-width:519px){
  .header-cta .btn{padding:0 12px;font-size:13px}
  .article-head-inner{padding:28px 18px 24px}
  .reading-card{padding:22px 16px 26px}
  .modal-mask{padding:0;align-items:flex-end}
  .modal-card{max-width:none;height:88vh;max-height:88vh;border-radius:20px 20px 0 0;padding:24px 18px 22px}
  .foot-col ul{grid-template-columns:1fr}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .rel-card:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --void:#070B14;
  --panel:#0B1120;
  --deep:#05080F;
  --cyan:#2FE0C0;
  --cyan-deep:#22C3A8;
  --orange:#FF7A45;
  --purple:#8B7BFF;
  --text:#E9EFFA;
  --sub:#9FAEC7;
  --muted:#6C7B95;
  --line:rgba(148,178,255,.14);
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.08);
  --r-card:18px;
  --r-btn:11px;
  --shadow-card:0 18px 40px rgba(3,6,14,.55), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-cyan:0 10px 26px rgba(47,224,192,.24);
  --ease:cubic-bezier(.2,.7,.3,1);
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--void);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0}
::selection{background:rgba(47,224,192,.28);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.sec{padding:96px 0}
.sec-tight{padding:72px 0}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--cyan);
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(47,224,192,.3);
  background:rgba(47,224,192,.08);
  margin-bottom:18px;
}
.sec-title{font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
.sec-sub{margin-top:14px;color:var(--sub);font-size:15px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease),backdrop-filter .22s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(7,11,20,.80);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;min-height:74px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(47,224,192,.95),rgba(34,195,168,.65));
  color:#04150F;font-size:15px;
  box-shadow:0 0 0 1px rgba(47,224,192,.45),0 8px 20px rgba(47,224,192,.22);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--text)}
.brand-text em{font-style:normal;color:var(--cyan);margin-left:2px}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.main-nav a{
  position:relative;
  padding:9px 12px;border-radius:9px;
  font-size:14.5px;color:var(--sub);
  transition:color .18s var(--ease),background .18s var(--ease);
  white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(47,224,192,0),rgba(47,224,192,.9),rgba(139,123,255,.7));
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.main-nav a:hover{color:var(--cyan);background:rgba(255,255,255,.035)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--cyan)}
.main-nav a.active::after{transform:scaleX(1)}
.header-cta{margin-left:8px;flex-shrink:0}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#3DF0D0 0%,var(--cyan-deep) 100%);
  color:#04150F;
  box-shadow:0 0 0 1px rgba(47,224,192,.55),var(--shadow-cyan);
}
.btn-primary:hover{filter:brightness(1.07);box-shadow:0 0 0 1px rgba(47,224,192,.75),0 14px 34px rgba(47,224,192,.34);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,224,192,.55),0 6px 16px rgba(47,224,192,.2)}
.btn-ghost{
  background:transparent;border:1px solid var(--line);color:var(--sub);
}
.btn-ghost:hover{border-color:rgba(47,224,192,.6);color:var(--text);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--cyan);font-size:14px;font-weight:600;
}
.text-link i{transition:transform .18s var(--ease)}
.text-link:hover i{transform:translateX(3px)}

/* ---------- Tags ---------- */
.tag{
  display:inline-flex;align-items:center;
  padding:3px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;
  color:var(--cyan);
  border:1px solid rgba(47,224,192,.42);
  background:rgba(47,224,192,.10);
}
.tag-purple{color:#B9B0FF;border-color:rgba(139,123,255,.45);background:rgba(139,123,255,.12)}
.tag-orange{color:#FFB193;border-color:rgba(255,122,69,.45);background:rgba(255,122,69,.12)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:96px 0 88px;border-bottom:1px solid var(--line)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.34;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(860px 420px at 16% 6%, rgba(47,224,192,.16), transparent 62%),
    radial-gradient(720px 400px at 88% 78%, rgba(139,123,255,.14), transparent 64%),
    linear-gradient(180deg, rgba(7,11,20,.70) 0%, rgba(7,11,20,.90) 62%, var(--void) 100%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-bottom:20px}
.hero-breadcrumb a{color:var(--sub)}
.hero-breadcrumb a:hover{color:var(--cyan)}
.hero-breadcrumb i{font-size:9px;opacity:.6}
.hero-title{
  font-size:clamp(30px,4.4vw,54px);
  font-weight:800;line-height:1.12;letter-spacing:-.02em;
}
.hero-title span{color:var(--cyan)}
.hero-sub{margin-top:20px;font-size:17px;color:var(--sub);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:38px;
  padding-top:26px;border-top:1px solid var(--line);
}
.stat{
  flex:1 1 150px;min-width:140px;
  padding:14px 16px;border-radius:14px;
  background:var(--glass);border:1px solid var(--line);
}
.stat-num{font-size:26px;font-weight:800;color:var(--cyan);line-height:1.2}
.stat-num small{font-size:13px;font-weight:600;color:var(--sub);margin-left:3px}
.stat-label{margin-top:4px;font-size:12px;color:var(--muted);line-height:1.5}

.hero-visual{position:relative}
.hero-card{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow-card);
}
.hero-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,0) 38%,rgba(7,11,20,.86) 100%);
}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-card-cap{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:18px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.hero-card-cap strong{font-size:15px;font-weight:700}
.hero-card-cap span{font-size:12px;color:var(--sub)}

/* ---------- Questions ---------- */
.qgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.qcard{
  position:relative;
  padding:26px 26px 24px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.qcard:nth-child(2){transform:translateY(22px)}
.qcard:nth-child(4){transform:translateY(22px)}
.qcard:hover{transform:translateY(-2px);border-color:rgba(47,224,192,.32);background:var(--glass-strong)}
.qcard:nth-child(2):hover,.qcard:nth-child(4):hover{transform:translateY(20px)}
.qnum{
  font-size:13px;font-weight:700;letter-spacing:.12em;color:rgba(47,224,192,.75);
  font-variant-numeric:tabular-nums;
}
.qcard h3{margin-top:10px;font-size:18px;font-weight:600;line-height:1.55}
.qcard p{margin-top:10px;font-size:14px;color:var(--sub)}
.qclose{
  margin-top:36px;padding:20px 24px;border-radius:14px;
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(47,224,192,.08),rgba(139,123,255,.06));
  color:var(--sub);font-size:15px;
}
.qclose strong{color:var(--text);font-weight:600}

/* ---------- Plans ---------- */
.plans{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.plan-card{
  position:relative;overflow:hidden;
  padding:32px 30px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.plan-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(47,224,192,0),rgba(47,224,192,.65),rgba(139,123,255,.4),rgba(47,224,192,0));
  opacity:.85;
}
.plan-card:hover{transform:translateY(-4px);border-color:rgba(47,224,192,.34)}
.plan-card h3{margin-top:16px;font-size:20px;font-weight:600}
.plan-card > p{margin-top:12px;font-size:14.5px;color:var(--sub)}
.plan-list{margin-top:20px;display:grid;gap:10px}
.plan-list li{
  position:relative;padding-left:22px;font-size:14px;color:var(--text);
}
.plan-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:7px;height:7px;border-radius:2px;
  background:var(--cyan);box-shadow:0 0 10px rgba(47,224,192,.55);
}
.plan-card .text-link{margin-top:24px}

/* ---------- Table ---------- */
.table-wrap{
  border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow-card);
}
.table-scroll{overflow-x:auto}
.data-table{width:100%;border-collapse:collapse;min-width:660px}
.data-table caption{
  caption-side:top;text-align:left;
  padding:20px 24px 14px;font-size:13px;color:var(--muted);
}
.data-table th,.data-table td{
  padding:16px 24px;text-align:left;font-size:14.5px;
  border-bottom:1px solid var(--line);
}
.data-table thead th{
  font-size:12.5px;letter-spacing:.06em;color:var(--sub);
  background:rgba(255,255,255,.035);font-weight:600;
  white-space:nowrap;
}
.data-table tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
.data-table tbody tr:last-child td{border-bottom:none}
.data-table tbody tr:hover{background:rgba(47,224,192,.05)}
.data-table td:first-child{color:var(--text);font-weight:600;white-space:nowrap}
.data-table td{color:var(--sub)}
.data-table .cell-cyan{color:var(--cyan);font-variant-numeric:tabular-nums}

/* ---------- Split ---------- */
.split{display:grid;grid-template-columns:.95fr 1.05fr;gap:52px;align-items:center}
.split-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.06),rgba(7,11,20,.55));
}
.split-media .badge-float{
  position:absolute;z-index:2;left:18px;bottom:18px;
  padding:8px 14px;border-radius:999px;
  font-size:12px;color:var(--text);
  background:rgba(11,17,32,.72);
  border:1px solid rgba(47,224,192,.35);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.step-list{margin-top:26px;display:grid;gap:16px;counter-reset:step}
.step-list li{
  position:relative;padding:16px 18px 16px 58px;
  border-radius:14px;border:1px solid var(--line);
  background:rgba(255,255,255,.032);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.step-list li:hover{border-color:rgba(47,224,192,.3);transform:translateY(-2px)}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:18px;top:16px;
  font-size:13px;font-weight:700;color:var(--cyan);
  font-variant-numeric:tabular-nums;
}
.step-list h4{font-size:15.5px;font-weight:600}
.step-list p{margin-top:4px;font-size:13.5px;color:var(--sub)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;background:none;border:none;color:var(--text);
  font-size:16px;font-weight:600;text-align:left;cursor:pointer;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--cyan)}
.faq-q i{
  flex-shrink:0;font-size:14px;color:var(--cyan);
  transition:transform .22s var(--ease);
}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s var(--ease);
}
.faq-a p{padding:0 4px 22px;font-size:15px;line-height:1.8;color:var(--sub)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  padding:52px 44px;
  border-radius:22px;
  border:1px solid rgba(47,224,192,.24);
  background:
    radial-gradient(600px 260px at 12% 0%, rgba(47,224,192,.16), transparent 66%),
    radial-gradient(520px 260px at 92% 100%, rgba(139,123,255,.14), transparent 68%),
    rgba(255,255,255,.05);
  box-shadow:var(--shadow-card);
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(47,224,192,0),rgba(47,224,192,.7),rgba(47,224,192,0));
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3}
.cta-band p{margin-top:12px;color:var(--sub);font-size:15px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- Privacy ---------- */
.privacy-strip{padding:26px 0 0}
.privacy-inner{
  border-top:1px solid var(--line);
  padding-top:26px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.privacy-item{display:flex;gap:10px;font-size:13px;color:var(--muted);line-height:1.7}
.privacy-item i{color:var(--cyan);font-size:12px;margin-top:5px}
.privacy-note{
  margin-top:22px;font-size:12.5px;color:var(--muted);
}
.privacy-note a{color:var(--cyan);border-bottom:1px solid rgba(47,224,192,.45);padding-bottom:1px}
.privacy-note a:hover{color:#5BF0D6}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:88px;
  background:var(--deep);
  border-top:1px solid var(--line);
  padding:64px 0 26px;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.foot-brand p{margin-top:16px;font-size:13.5px;color:var(--sub);line-height:1.85;max-width:330px}
.foot-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.foot-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.foot-col ul{display:grid;gap:10px}
.foot-col li a,.foot-col p{font-size:13.5px;color:var(--sub);line-height:1.85}
.foot-col li a{transition:color .18s var(--ease)}
.foot-col li a:hover{color:var(--cyan)}
.foot-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12.5px;color:var(--muted);
}
.to-top{display:inline-flex;align-items:center;gap:7px;color:var(--sub);font-size:12.5px}
.to-top:hover{color:var(--cyan)}

/* ---------- Mobile Tab ---------- */
.mobile-tab{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:95;
  background:rgba(7,11,20,.92);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
  padding:8px 6px calc(8px + env(safe-area-inset-bottom));
}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;
  min-height:48px;justify-content:center;
  font-size:11px;color:var(--muted);
  position:relative;border-radius:10px;
  transition:color .18s var(--ease);
}
.mobile-tab a i{font-size:16px}
.mobile-tab a.active{color:var(--cyan)}
.mobile-tab a.active::before{
  content:"";position:absolute;top:-8px;left:22%;right:22%;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(47,224,192,0),var(--cyan),rgba(139,123,255,.7));
  box-shadow:0 0 12px rgba(47,224,192,.7);
}

/* ---------- Modal ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:120;
  background:rgba(4,7,14,.72);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  display:none;align-items:center;justify-content:center;
  padding:24px;
}
.modal-mask.open{display:flex}
.modal{
  width:100%;max-width:480px;
  border-radius:20px;
  background:linear-gradient(180deg,rgba(18,25,42,.98),rgba(11,17,32,.98));
  border:1px solid var(--line);
  box-shadow:0 30px 70px rgba(0,0,0,.6),inset 0 1px 0 rgba(255,255,255,.08);
  padding:28px;
  position:relative;
  max-height:88vh;overflow-y:auto;
  animation:modalIn .24s var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
.modal-close{
  position:absolute;right:14px;top:14px;
  width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line);background:transparent;color:var(--sub);
  cursor:pointer;display:grid;place-items:center;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.modal-close:hover{color:var(--cyan);border-color:rgba(47,224,192,.5)}
.modal h3{font-size:21px;font-weight:700}
.modal > p{margin-top:8px;font-size:13.5px;color:var(--sub)}
.form{margin-top:22px;display:grid;gap:14px}
.field label{display:block;font-size:12px;color:var(--sub);margin-bottom:6px;letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;padding:11px 14px;
  border-radius:10px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--text);font-size:14px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  appearance:none;
}
.field textarea{resize:vertical;min-height:76px}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:rgba(47,224,192,.75);
  box-shadow:0 0 0 3px rgba(47,224,192,.14);
}
.field select option{background:var(--panel);color:var(--text)}
.checkline{display:flex;align-items:flex-start;gap:9px;font-size:12.5px;color:var(--sub);line-height:1.7}
.checkline input{width:16px;height:16px;margin-top:4px;accent-color:var(--cyan);flex-shrink:0}
.checkline a{color:var(--cyan);border-bottom:1px solid rgba(47,224,192,.45)}
.btn[disabled]{opacity:.6;pointer-events:none}
.form-tip{font-size:12px;color:var(--muted);text-align:center}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:translateY(0)}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .hero{padding:72px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-sub{max-width:none}
  .main-nav{display:none}
  .header-cta{margin-left:auto}
  .sec{padding:72px 0}
  .sec-tight{padding:56px 0}
  .split{grid-template-columns:1fr;gap:34px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .privacy-inner{grid-template-columns:1fr}
  .mobile-tab{display:flex}
  body{padding-bottom:78px}
  .qcard:nth-child(2),.qcard:nth-child(4){transform:none}
  .qcard:nth-child(2):hover,.qcard:nth-child(4):hover{transform:translateY(-2px)}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .hero-title{letter-spacing:-.01em}
  .qgrid{grid-template-columns:1fr;gap:16px}
  .plans{grid-template-columns:1fr}
  .cta-band{padding:34px 22px;border-radius:18px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .hero-actions .btn{flex:1 1 100%}
  .stat{flex:1 1 100%}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .modal-mask{padding:0;align-items:flex-end}
  .modal{max-width:100%;border-radius:20px 20px 0 0;max-height:88vh;padding:24px 20px calc(24px + env(safe-area-inset-bottom))}
  .data-table th,.data-table td{padding:13px 16px}
}
@media (max-width:519px){
  .site-header .brand-text{font-size:15.5px}
  .header-inner{min-height:64px;gap:12px}
  .sec{padding:56px 0}
  .sec-head{margin-bottom:30px}
  .plan-card{padding:24px 20px}
  .qcard{padding:22px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
    --void:#070B14;
    --panel:#0B1120;
    --foot:#05080F;
    --cyan:#2FE0C0;
    --cyan-deep:#17A98F;
    --signal:#FF7A45;
    --nebula:#8B7BFF;
    --text:#E9EFFA;
    --text-2:#9FAEC7;
    --text-3:#6C7B95;
    --line:rgba(148,178,255,0.14);
    --line-strong:rgba(148,178,255,0.28);
    --glass:rgba(255,255,255,0.055);
    --glass-2:rgba(255,255,255,0.085);
    --radius-lg:20px;
    --radius-md:16px;
    --radius-sm:12px;
    --shadow-card:0 18px 40px -22px rgba(0,0,0,0.9), inset 0 1px 0 rgba(255,255,255,0.07);
    --shadow-btn:0 0 0 1px rgba(47,224,192,0.6), 0 14px 30px -12px rgba(47,224,192,0.55);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--void);
    color:var(--text);
    font-family:'PingFang SC','HarmonyOS Sans','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body.modal-open{overflow:hidden;}
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;cursor:pointer;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  input,select,textarea{font-family:inherit;font-size:15px;color:var(--text);}
  :focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}

  .container{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding:0 24px;
  }
  .section{padding:96px 0;position:relative;}
  .section-tight{padding:72px 0;}
  .section-head{max-width:780px;margin-bottom:44px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.14em;color:var(--cyan);
    text-transform:uppercase;margin-bottom:16px;font-weight:600;
  }
  .eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);display:inline-block;}
  .section-head h2{
    font-size:clamp(22px,2.6vw,34px);
    font-weight:700;line-height:1.25;letter-spacing:-.01em;
  }
  .section-head p{margin-top:14px;color:var(--text-2);font-size:15.5px;max-width:640px;}
  .h-bar{position:relative;padding-left:16px;}
  .h-bar::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:linear-gradient(180deg,var(--cyan),rgba(47,224,192,0.15));}

  /* ---------- Header ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:80;
    background:transparent;
    border-bottom:1px solid transparent;
    transition:background .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
  }
  .site-header.scrolled{
    background:rgba(7,11,20,0.82);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:24px;
    height:72px;
  }
  .brand{display:inline-flex;align-items:center;gap:10px;}
  .brand-mark{
    width:34px;height:34px;border-radius:11px;
    display:grid;place-items:center;
    background:radial-gradient(120% 120% at 20% 10%,rgba(47,224,192,0.35),rgba(139,123,255,0.22) 55%,rgba(255,255,255,0.03));
    border:1px solid rgba(47,224,192,0.35);
    box-shadow:0 0 18px -6px rgba(47,224,192,0.65);
    color:var(--cyan);font-size:14px;
  }
  .brand-text{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--text);}
  .brand-text em{font-style:normal;color:var(--cyan);}
  .main-nav{display:flex;align-items:center;gap:6px;}
  .main-nav a{
    position:relative;padding:10px 12px;border-radius:10px;
    font-size:14.5px;color:var(--text-2);
    transition:color .2s var(--ease),background .2s var(--ease);
    white-space:nowrap;
  }
  .main-nav a::after{
    content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--cyan),rgba(47,224,192,0));
    transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
  }
  .main-nav a:hover{color:var(--cyan);background:rgba(255,255,255,0.04);}
  .main-nav a:hover::after{transform:scaleX(1);}
  .main-nav a.active{color:var(--cyan);}
  .main-nav a.active::after{transform:scaleX(1);}
  .header-cta{display:flex;align-items:center;gap:12px;}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:9px;
    min-height:48px;padding:0 22px;border-radius:12px;
    font-size:15px;font-weight:600;border:1px solid transparent;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
    text-align:center;
  }
  .btn-sm{min-height:42px;padding:0 18px;font-size:14px;}
  .btn-primary{
    background:linear-gradient(135deg,#4BEFD2 0%,var(--cyan) 45%,var(--cyan-deep) 100%);
    color:#04120F;
    box-shadow:var(--shadow-btn);
  }
  .btn-primary:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(47,224,192,0.8),0 18px 36px -12px rgba(47,224,192,0.7);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,224,192,0.45),0 8px 18px -10px rgba(47,224,192,0.5);}
  .btn-ghost{
    background:transparent;border:1px solid var(--line-strong);color:var(--text-2);
  }
  .btn-ghost:hover{border-color:var(--cyan);color:var(--text);background:rgba(47,224,192,0.06);}
  .btn-ghost:active{transform:translateY(1px);}
  .link-arrow{
    display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:14.5px;font-weight:600;
    min-height:44px;
  }
  .link-arrow i{transition:transform .2s var(--ease);font-size:12px;}
  .link-arrow:hover i{transform:translateX(4px);}

  /* ---------- Tags ---------- */
  .tag{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 12px;border-radius:999px;
    font-size:12px;letter-spacing:.02em;font-weight:600;
    color:var(--cyan);background:rgba(47,224,192,0.08);
    border:1px solid rgba(47,224,192,0.32);
    white-space:nowrap;
  }
  .tag-purple{color:#BDB4FF;background:rgba(139,123,255,0.09);border-color:rgba(139,123,255,0.36);}
  .tag-orange{color:#FFA17C;background:rgba(255,122,69,0.09);border-color:rgba(255,122,69,0.34);}
  .tag-muted{color:var(--text-2);background:rgba(255,255,255,0.05);border-color:var(--line);}

  /* ---------- Hero ---------- */
  .page-hero{
    position:relative;overflow:hidden;
    padding:152px 0 84px;
    border-bottom:1px solid var(--line);
    background:
      radial-gradient(900px 420px at 78% -10%,rgba(139,123,255,0.20),transparent 62%),
      radial-gradient(760px 380px at 10% 8%,rgba(47,224,192,0.16),transparent 60%),
      linear-gradient(180deg,#070B14 0%,#080D18 100%);
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;
    opacity:.22;
    mask-image:linear-gradient(180deg,rgba(0,0,0,0.9),rgba(0,0,0,0.25) 70%,transparent);
    -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,0.9),rgba(0,0,0,0.25) 70%,transparent);
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;
    background:
      radial-gradient(2px 2px at 12% 32%,rgba(233,239,250,0.55),transparent 60%),
      radial-gradient(2px 2px at 46% 18%,rgba(233,239,250,0.35),transparent 60%),
      radial-gradient(2px 2px at 82% 46%,rgba(47,224,192,0.6),transparent 60%),
      radial-gradient(2px 2px at 66% 74%,rgba(233,239,250,0.28),transparent 60%);
    pointer-events:none;
  }
  .page-hero .container{position:relative;z-index:2;}
  .crumb{
    display:flex;align-items:center;gap:8px;flex-wrap:wrap;
    font-size:13px;color:var(--text-3);margin-bottom:22px;
  }
  .crumb a{color:var(--text-2);transition:color .2s var(--ease);}
  .crumb a:hover{color:var(--cyan);}
  .crumb span{color:var(--text-3);}
  .page-hero h1{
    font-size:clamp(30px,4.4vw,50px);
    font-weight:800;line-height:1.12;letter-spacing:-.02em;
    max-width:900px;
  }
  .page-hero h1 .hl{
    color:transparent;background:linear-gradient(120deg,#6BF3DC,var(--cyan) 55%,#6FA9FF);
    -webkit-background-clip:text;background-clip:text;
  }
  .hero-lead{
    margin-top:20px;max-width:660px;
    font-size:16.5px;color:var(--text-2);line-height:1.8;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
  .hero-metrics{
    display:flex;flex-wrap:wrap;gap:14px;margin-top:40px;
  }
  .metric-chip{
    flex:1 1 190px;max-width:260px;
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--radius-md);
    padding:16px 18px;
    box-shadow:inset 0 1px 0 rgba(255,255,255,0.08);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
  }
  .metric-chip strong{
    display:block;font-size:26px;font-weight:800;color:var(--cyan);letter-spacing:-.01em;line-height:1.2;
  }
  .metric-chip strong.signal{color:var(--signal);}
  .metric-chip span{display:block;margin-top:6px;font-size:13px;color:var(--text-2);}

  /* ---------- Cards ---------- */
  .card{
    position:relative;
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-card);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    overflow:hidden;
    transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .card::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,0.4),transparent);
    opacity:.7;
  }
  .card:hover{transform:translateY(-4px);border-color:rgba(47,224,192,0.32);}

  /* ---------- Stat board ---------- */
  .stat-grid{
    display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  }
  .stat-card{
    padding:26px 24px;
  }
  .stat-card .stat-label{font-size:13px;color:var(--text-2);letter-spacing:.02em;}
  .stat-card .stat-num{
    margin-top:12px;font-size:clamp(30px,3.4vw,40px);font-weight:800;line-height:1.05;
    letter-spacing:-.02em;color:var(--cyan);
  }
  .stat-card.alt .stat-num{color:var(--signal);}
  .stat-card.purple .stat-num{color:#BDB4FF;}
  .stat-card .stat-unit{font-size:14px;font-weight:600;color:var(--text-2);margin-left:4px;}
  .stat-card .stat-note{margin-top:10px;font-size:12.5px;color:var(--text-3);}
  .board-note{
    margin-top:20px;padding:14px 18px;border-radius:var(--radius-sm);
    border:1px dashed var(--line-strong);
    font-size:13px;color:var(--text-3);
    display:flex;gap:10px;align-items:flex-start;
  }
  .board-note i{color:var(--cyan);margin-top:3px;}

  /* ---------- Compare table ---------- */
  .table-wrap{
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    background:var(--glass);
    overflow:hidden;
    box-shadow:var(--shadow-card);
  }
  .compare-table{width:100%;border-collapse:collapse;}
  .compare-table th,.compare-table td{
    padding:18px 20px;text-align:left;font-size:14.5px;vertical-align:top;
    border-bottom:1px solid var(--line);
  }
  .compare-table thead th{
    font-size:12.5px;letter-spacing:.08em;color:var(--text-3);font-weight:600;
    background:rgba(255,255,255,0.035);
    text-transform:uppercase;
  }
  .compare-table tbody tr:nth-child(even){background:rgba(255,255,255,0.022);}
  .compare-table tbody tr:last-child td{border-bottom:none;}
  .compare-table td strong{font-weight:600;color:var(--text);display:block;}
  .compare-table td.sub{color:var(--text-2);font-size:13.5px;}
  .compare-table .speed{color:var(--cyan);font-weight:600;font-size:13.5px;}

  /* ---------- Feature cards ---------- */
  .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
  .feature-card{display:flex;flex-direction:column;}
  .feature-card .thumb{
    aspect-ratio:16/10;overflow:hidden;position:relative;
    background:linear-gradient(135deg,#0D1526,#131C31);
  }
  .feature-card .thumb img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .35s var(--ease);
  }
  .feature-card:hover .thumb img{transform:scale(1.04);}
  .feature-card .thumb::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(7,11,20,0) 45%,rgba(7,11,20,0.78));
  }
  .feature-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
  .feature-body h3{font-size:18px;font-weight:600;line-height:1.45;}
  .feature-body p{font-size:14px;color:var(--text-2);line-height:1.75;}
  .feature-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--text-3);}

  /* ---------- Split check section ---------- */
  .split{
    display:grid;grid-template-columns:0.95fr 1.05fr;gap:44px;align-items:center;
  }
  .split-media{
    position:relative;border-radius:var(--radius-lg);overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--shadow-card);
    aspect-ratio:4/3;background:linear-gradient(135deg,#0C1424,#141E33);
  }
  .split-media img{width:100%;height:100%;object-fit:cover;}
  .split-media::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(7,11,20,0.05),rgba(7,11,20,0.6));
  }
  .check-list{display:grid;gap:14px;margin-top:26px;}
  .check-item{
    display:flex;gap:14px;align-items:flex-start;
    padding:16px 18px;border-radius:var(--radius-sm);
    background:rgba(255,255,255,0.04);border:1px solid var(--line);
    transition:border-color .2s var(--ease),background .2s var(--ease);
  }
  .check-item:hover{border-color:rgba(47,224,192,0.32);background:rgba(255,255,255,0.06);}
  .check-item .num{
    flex:0 0 auto;width:28px;height:28px;border-radius:9px;
    display:grid;place-items:center;font-size:12.5px;font-weight:700;
    color:var(--cyan);background:rgba(47,224,192,0.1);border:1px solid rgba(47,224,192,0.3);
  }
  .check-item h4{font-size:15.5px;font-weight:600;margin-bottom:4px;}
  .check-item p{font-size:13.5px;color:var(--text-2);line-height:1.7;}

  /* ---------- FAQ ---------- */
  .faq-list{max-width:920px;border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:22px 4px;background:none;border:none;text-align:left;
    font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
    min-height:44px;
  }
  .faq-q:hover{color:var(--cyan);}
  .faq-icon{
    flex:0 0 auto;width:28px;height:28px;border-radius:9px;
    display:grid;place-items:center;
    border:1px solid var(--line-strong);color:var(--text-2);font-size:12px;
    transition:transform .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  }
  .faq-item.open .faq-icon{transform:rotate(180deg);color:var(--cyan);border-color:rgba(47,224,192,0.45);}
  .faq-a{
    max-height:0;overflow:hidden;
    transition:max-height .3s var(--ease);
  }
  .faq-a-inner{padding:0 4px 24px;font-size:15px;color:var(--text-2);line-height:1.8;max-width:820px;}

  /* ---------- CTA band ---------- */
  .cta-band{
    position:relative;overflow:hidden;
    border:1px solid var(--line);
    border-radius:24px;
    padding:48px 44px;
    background:
      radial-gradient(600px 260px at 88% 0%,rgba(47,224,192,0.20),transparent 62%),
      radial-gradient(500px 240px at 6% 100%,rgba(139,123,255,0.16),transparent 60%),
      linear-gradient(135deg,rgba(255,255,255,0.06),rgba(255,255,255,0.02));
    box-shadow:var(--shadow-card);
    display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  }
  .cta-band h2{font-size:clamp(21px,2.4vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
  .cta-band p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:560px;}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

  .privacy-note{
    margin-top:28px;font-size:12.5px;color:var(--text-3);display:flex;gap:8px;align-items:center;flex-wrap:wrap;
  }
  .privacy-note a{color:var(--cyan);border-bottom:1px solid rgba(47,224,192,0.45);padding-bottom:1px;}
  .privacy-note a:hover{border-bottom-color:var(--cyan);}

  /* ---------- Footer ---------- */
  .site-footer{
    background:var(--foot);
    border-top:1px solid var(--line);
    padding:64px 0 0;
    margin-top:0;
  }
  .foot-grid{
    display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
    padding-bottom:48px;
  }
  .foot-brand p{margin-top:18px;font-size:13.5px;color:var(--text-2);line-height:1.85;max-width:340px;}
  .foot-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px;}
  .foot-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text);letter-spacing:.02em;}
  .foot-col ul{display:grid;gap:10px;}
  .foot-col a{font-size:13.5px;color:var(--text-2);transition:color .2s var(--ease);}
  .foot-col a:hover{color:var(--cyan);}
  .foot-col p{font-size:13.5px;color:var(--text-2);line-height:1.9;}
  .foot-bottom{
    border-top:1px solid var(--line);
    padding:20px 0 24px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:12.5px;color:var(--text-3);
  }
  .to-top{display:inline-flex;align-items:center;gap:8px;color:var(--text-2);font-size:12.5px;transition:color .2s var(--ease);}
  .to-top:hover{color:var(--cyan);}

  /* ---------- Mobile tab bar ---------- */
  .tabbar{
    display:none;
    position:fixed;left:0;right:0;bottom:0;z-index:90;
    background:rgba(7,11,20,0.92);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-top:1px solid var(--line);
    padding:8px 6px calc(8px + env(safe-area-inset-bottom));
  }
  .tabbar-inner{display:flex;justify-content:space-around;align-items:stretch;gap:2px;}
  .tab-item{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
    min-height:48px;padding:6px 2px;border-radius:12px;
    font-size:11px;color:var(--text-3);letter-spacing:.01em;
    transition:color .2s var(--ease),background .2s var(--ease);
    position:relative;
  }
  .tab-item i{font-size:16px;}
  .tab-item.active{
    color:var(--cyan);
    background:rgba(47,224,192,0.08);
    border:1px solid rgba(47,224,192,0.35);
    box-shadow:0 0 16px -6px rgba(47,224,192,0.8);
  }
  .tab-item.active::before{
    content:"";position:absolute;top:-9px;left:18%;right:18%;height:2px;border-radius:2px;
    background:linear-gradient(90deg,transparent,var(--cyan),transparent);
  }

  /* ---------- Modal ---------- */
  .modal-mask{
    position:fixed;inset:0;z-index:120;
    background:rgba(4,7,14,0.72);
    backdrop-filter:blur(6px);
    -webkit-backdrop-filter:blur(6px);
    display:flex;align-items:center;justify-content:center;
    padding:24px;
    opacity:0;visibility:hidden;
    transition:opacity .22s var(--ease),visibility .22s var(--ease);
  }
  .modal-mask.show{opacity:1;visibility:visible;}
  .modal-card{
    position:relative;width:100%;max-width:480px;
    background:linear-gradient(160deg,rgba(20,29,48,0.98),rgba(11,17,32,0.98));
    border:1px solid var(--line-strong);
    border-radius:var(--radius-lg);
    box-shadow:0 40px 80px -30px rgba(0,0,0,0.95),inset 0 1px 0 rgba(255,255,255,0.1);
    padding:30px 28px 26px;
    transform:translateY(14px) scale(.98);
    transition:transform .24s var(--ease);
    max-height:88vh;overflow-y:auto;
  }
  .modal-mask.show .modal-card{transform:translateY(0) scale(1);}
  .modal-card h3{font-size:20px;font-weight:700;letter-spacing:-.01em;}
  .modal-card .modal-sub{margin-top:8px;font-size:13.5px;color:var(--text-2);line-height:1.7;}
  .modal-close{
    position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:10px;
    display:grid;place-items:center;background:rgba(255,255,255,0.05);
    border:1px solid var(--line);color:var(--text-2);font-size:13px;
    transition:color .2s var(--ease),border-color .2s var(--ease);
  }
  .modal-close:hover{color:var(--cyan);border-color:rgba(47,224,192,0.45);}
  .form-grid{display:grid;gap:16px;margin-top:22px;}
  .field{display:grid;gap:7px;}
  .field label{font-size:12px;color:var(--text-2);letter-spacing:.03em;}
  .field input,.field select,.field textarea{
    width:100%;min-height:46px;padding:11px 14px;border-radius:10px;
    background:rgba(255,255,255,0.05);
    border:1px solid var(--line-strong);
    color:var(--text);
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
    appearance:none;
  }
  .field textarea{min-height:88px;resize:vertical;line-height:1.7;}
  .field select{background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:38px;}
  .field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--cyan);
    box-shadow:0 0 0 3px rgba(47,224,192,0.16);
    background:rgba(255,255,255,0.07);
  }
  .field.error input,.field.error textarea,.field.error select{border-color:var(--signal);box-shadow:0 0 0 3px rgba(255,122,69,0.14);}
  .field .err-msg{display:none;font-size:12px;color:#FFB199;}
  .field.error .err-msg{display:block;}
  .check-row{display:flex;align-items:flex-start;gap:10px;font-size:12.5px;color:var(--text-2);line-height:1.7;}
  .check-row input[type="checkbox"]{
    width:18px;height:18px;min-height:18px;flex:0 0 auto;margin-top:2px;
    accent-color:var(--cyan);border-radius:4px;
  }
  .check-row a{color:var(--cyan);border-bottom:1px solid rgba(47,224,192,0.45);}
  .form-submit{margin-top:6px;width:100%;}
  .form-tip{margin-top:12px;font-size:11.5px;color:var(--text-3);text-align:center;}

  /* ---------- Reveal ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
  .reveal.in{opacity:1;transform:none;}

  /* ---------- Responsive ---------- */
  @media (max-width:1180px){
    .main-nav{gap:2px;}
    .main-nav a{padding:9px 8px;font-size:13.5px;}
  }
  @media (max-width:1023px){
    .main-nav{display:none;}
    .header-inner{height:64px;}
    .site-header{background:rgba(7,11,20,0.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}
    .header-cta .btn{min-height:40px;padding:0 16px;font-size:13.5px;}
    .page-hero{padding:112px 0 64px;}
    .stat-grid{grid-template-columns:repeat(2,1fr);}
    .feature-grid{grid-template-columns:repeat(2,1fr);}
    .split{grid-template-columns:1fr;gap:32px;}
    .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .cta-band{padding:36px 28px;}
    .section{padding:72px 0;}
    .tabbar{display:block;}
    body{padding-bottom:78px;}
    .to-top{display:none;}
  }
  @media (max-width:768px){
    .container{padding:0 18px;}
    .compare-table thead{display:none;}
    .compare-table,.compare-table tbody,.compare-table tr,.compare-table td{display:block;width:100%;}
    .compare-table tr{
      padding:16px 18px;border-bottom:1px solid var(--line);
    }
    .compare-table tbody tr:last-child{border-bottom:none;}
    .compare-table td{
      border-bottom:none;padding:6px 0;font-size:14px;
      display:flex;gap:12px;align-items:flex-start;
    }
    .compare-table td::before{
      content:attr(data-label);
      flex:0 0 82px;font-size:12px;color:var(--text-3);letter-spacing:.04em;padding-top:2px;
    }
    .feature-grid{grid-template-columns:1fr;}
    .hero-metrics{gap:10px;}
    .metric-chip{flex:1 1 100%;max-width:none;}
    .cta-band{padding:30px 22px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 auto;}
    .modal-mask{padding:0;align-items:flex-end;}
    .modal-card{
      max-width:none;border-radius:20px 20px 0 0;
      max-height:88vh;padding:26px 20px calc(22px + env(safe-area-inset-bottom));
      transform:translateY(100%);
    }
    .modal-mask.show .modal-card{transform:translateY(0);}
    .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .foot-brand{grid-column:1/-1;}
  }
  @media (max-width:520px){
    .stat-grid{grid-template-columns:1fr;}
    .section{padding:56px 0;}
    .page-hero{padding:100px 0 52px;}
    .hero-actions .btn{width:100%;}
    .foot-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
    .check-item{padding:14px;}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{
      animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;
    }
    .reveal{opacity:1;transform:none;}
  }

/* roulang page: category3 */
:root{
    --void:#070B14;
    --panel:#0B1120;
    --footer:#05080F;
    --cyan:#2FE0C0;
    --cyan-deep:#17A892;
    --orange:#FF7A45;
    --purple:#8B7BFF;
    --text:#E9EFFA;
    --text-2:#9FAEC7;
    --text-3:#6C7B95;
    --line:rgba(148,178,255,0.14);
    --line-strong:rgba(148,178,255,0.3);
    --glass:rgba(255,255,255,0.055);
    --r-sm:10px;
    --r-md:16px;
    --r-lg:20px;
    --shadow-card:0 18px 44px -24px rgba(0,0,0,.92), inset 0 1px 0 rgba(255,255,255,.07);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--void);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    font-variant-numeric:tabular-nums;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit}
  h1,h2,h3,h4,p,ul,ol{margin:0}
  ul{list-style:none;padding:0}
  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
  .section{padding:96px 0;position:relative}
  .section-tight{padding:72px 0;position:relative}
  .text-2{color:var(--text-2)}
  .text-3{color:var(--text-3)}
  .num{font-variant-numeric:tabular-nums}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:70;
    background:transparent;
    transition:background .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
    border-bottom:1px solid transparent;
  }
  .site-header.is-scrolled{
    background:rgba(7,11,20,.82);
    -webkit-backdrop-filter:blur(16px) saturate(140%);
    backdrop-filter:blur(16px) saturate(140%);
    border-bottom-color:var(--line);
  }
  .header-inner{display:flex;align-items:center;gap:28px;height:74px}
  .brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{
    width:34px;height:34px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,#3BEDD3,#17A892);
    color:#04201C;font-size:15px;
    box-shadow:0 0 0 1px rgba(47,224,192,.4),0 10px 24px -12px rgba(47,224,192,.9);
  }
  .brand-text{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--text)}
  .brand-text em{font-style:normal;color:var(--cyan);font-weight:700}
  .main-nav{display:flex;align-items:center;gap:26px;margin-left:12px}
  .main-nav a{
    position:relative;font-size:15px;color:var(--text-2);
    padding:6px 0;transition:color .18s var(--ease);white-space:nowrap;
  }
  .main-nav a::after{
    content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;border-radius:2px;
    background:linear-gradient(90deg,var(--cyan),rgba(47,224,192,0));
    transition:width .22s var(--ease);
  }
  .main-nav a:hover{color:var(--cyan)}
  .main-nav a:hover::after{width:100%}
  .main-nav a.active{color:var(--cyan)}
  .main-nav a.active::after{width:100%}
  .header-cta{margin-left:auto;display:flex;align-items:center;gap:12px}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;line-height:1;min-height:46px;
    padding:14px 26px;border-radius:12px;border:1px solid transparent;
    cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
  }
  .btn-primary{
    background:linear-gradient(135deg,#41EAD1,#22C6AC);
    color:#04201C;
    box-shadow:0 0 0 1px rgba(47,224,192,.45),0 14px 34px -14px rgba(47,224,192,.8);
  }
  .btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,224,192,.62),0 20px 44px -12px rgba(47,224,192,.9)}
  .btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,224,192,.45),0 8px 20px -12px rgba(47,224,192,.6)}
  .btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
  .btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-1px)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-sm{padding:10px 18px;font-size:14px;min-height:42px;border-radius:10px}
  .btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
  .btn-block{width:100%}
  .btn[disabled]{opacity:.6;pointer-events:none}
  .text-link{display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-size:14px;font-weight:600;transition:gap .18s var(--ease)}
  .text-link i{transition:transform .18s var(--ease)}
  .text-link:hover i{transform:translateX(3px)}

  /* ---------- 标签 ---------- */
  .tag{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 11px;border-radius:999px;font-size:12px;letter-spacing:.02em;line-height:1.6;
    border:1px solid rgba(47,224,192,.45);color:#9CF3E4;background:rgba(47,224,192,.08);
  }
  .tag-purple{border-color:rgba(139,123,255,.45);color:#C4BCFF;background:rgba(139,123,255,.08)}
  .tag-orange{border-color:rgba(255,122,69,.45);color:#FFB79B;background:rgba(255,122,69,.08)}

  /* ---------- 卡片 ---------- */
  .card{
    position:relative;
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--shadow-card);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .card::before{
    content:"";position:absolute;top:0;left:20px;right:20px;height:1px;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.34),transparent);
    pointer-events:none;
  }
  .card:hover{transform:translateY(-4px);border-color:rgba(47,224,192,.32);box-shadow:0 24px 52px -26px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.09)}

  /* ---------- Hero ---------- */
  .hero{position:relative;padding:136px 0 92px;overflow:hidden}
  .hero-bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.webp);background-size:cover;background-position:center;opacity:.34;pointer-events:none}
  .hero-bg::after{
    content:"";position:absolute;inset:0;
    background:
      radial-gradient(62% 68% at 72% 18%,rgba(47,224,192,.20),transparent 68%),
      radial-gradient(48% 52% at 12% 82%,rgba(139,123,255,.14),transparent 70%),
      linear-gradient(180deg,rgba(7,11,20,.55),var(--void) 94%);
  }
  .hero-grid{position:relative;display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
  .hero-copy h1{
    font-size:clamp(30px,4.4vw,54px);font-weight:800;line-height:1.12;letter-spacing:-.02em;margin:18px 0 18px;
  }
  .hero-copy h1 span{color:var(--cyan)}
  .hero-sub{font-size:17px;color:var(--text-2);max-width:520px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .hero-metrics{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
  .metric{
    flex:1 1 150px;min-width:148px;padding:14px 18px;border-radius:14px;
    border:1px solid var(--line);background:rgba(255,255,255,.04);
  }
  .metric b{display:block;font-size:21px;font-weight:700;color:var(--cyan);line-height:1.3;font-variant-numeric:tabular-nums}
  .metric span{font-size:12px;color:var(--text-3);letter-spacing:.02em}
  .hero-visual{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;box-shadow:0 30px 70px -34px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.1)}
  .hero-visual img{width:100%;height:100%;object-fit:cover}
  .hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,20,.06),rgba(7,11,20,.68));pointer-events:none}
  .hero-badge{
    position:absolute;left:16px;right:16px;bottom:16px;z-index:2;
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:12px 16px;border-radius:14px;
    background:rgba(11,17,32,.72);border:1px solid var(--line);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  }
  .hero-badge strong{font-size:14px;font-weight:600;color:var(--text)}
  .hero-badge small{display:block;font-size:12px;color:var(--text-3)}

  /* ---------- 板块标题 ---------- */
  .sec-head{max-width:760px;margin-bottom:44px}
  .sec-head h2{
    position:relative;padding-left:16px;font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.01em;
  }
  .sec-head h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--cyan)}
  .sec-head p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:640px}

  /* ---------- 时间轴 ---------- */
  .timeline{position:relative;margin-top:8px}
  .tl-step{position:relative;padding-left:88px;padding-bottom:46px}
  .tl-step::before{
    content:"";position:absolute;left:31px;top:70px;bottom:6px;width:2px;
    background:linear-gradient(180deg,rgba(47,224,192,.55),rgba(47,224,192,0));
  }
  .tl-step:last-child{padding-bottom:0}
  .tl-step:last-child::before{display:none}
  .tl-num{
    position:absolute;left:0;top:0;width:64px;height:64px;border-radius:18px;
    display:flex;align-items:center;justify-content:center;
    font-size:20px;font-weight:800;color:var(--cyan);font-variant-numeric:tabular-nums;
    background:rgba(47,224,192,.08);border:1px solid rgba(47,224,192,.32);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.1);
  }
  .tl-body{padding:22px 24px}
  .tl-body h3{font-size:19px;font-weight:600;margin-bottom:8px}
  .tl-body p{font-size:15px;color:var(--text-2);max-width:640px}
  .tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

  /* ---------- 表格 ---------- */
  .table-wrap{overflow-x:auto;border-radius:var(--r-md);border:1px solid var(--line);background:rgba(255,255,255,.03)}
  .spec-table{width:100%;border-collapse:collapse;font-size:15px;min-width:640px}
  .spec-table thead th{
    text-align:left;font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--text-3);
    padding:14px 18px;background:rgba(255,255,255,.05);border-bottom:1px solid var(--line);white-space:nowrap;
  }
  .spec-table td{padding:15px 18px;border-bottom:1px solid rgba(148,178,255,.09);color:var(--text-2);vertical-align:top}
  .spec-table td:first-child{color:var(--text);font-weight:600;white-space:nowrap}
  .spec-table tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
  .spec-table tbody tr:last-child td{border-bottom:0}

  /* ---------- 对照卡 ---------- */
  .compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
  .compare-card{padding:30px 28px}
  .compare-card h3{font-size:20px;font-weight:700;margin:14px 0 6px}
  .compare-card .cmp-lead{font-size:14px;color:var(--text-3);margin-bottom:18px}
  .cmp-list li{display:flex;gap:10px;font-size:15px;color:var(--text-2);padding:9px 0;border-bottom:1px dashed rgba(148,178,255,.12)}
  .cmp-list li:last-child{border-bottom:0}
  .cmp-list i{color:var(--cyan);font-size:12px;margin-top:7px;flex-shrink:0}

  /* ---------- 数据 ---------- */
  .stat-section{position:relative;overflow:hidden;background:linear-gradient(180deg,rgba(11,17,32,.6),transparent)}
  .stat-section::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:radial-gradient(rgba(148,178,255,.16) 1px,transparent 1px);
    background-size:28px 28px;opacity:.45;
    -webkit-mask-image:linear-gradient(180deg,transparent,#000 28%,#000 72%,transparent);
    mask-image:linear-gradient(180deg,transparent,#000 28%,#000 72%,transparent);
  }
  .stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
  .stat{padding:26px 24px;border-radius:var(--r-md);border:1px solid var(--line);background:rgba(255,255,255,.04)}
  .stat b{display:block;font-size:clamp(28px,3.4vw,42px);font-weight:800;line-height:1.1;color:var(--cyan);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
  .stat:nth-child(2) b{color:var(--orange)}
  .stat:nth-child(4) b{color:var(--purple)}
  .stat span{display:block;margin-top:8px;font-size:13px;color:var(--text-2)}
  .stat small{display:block;margin-top:4px;font-size:12px;color:var(--text-3)}

  /* ---------- 图文块 ---------- */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
  .split-visual{border-radius:18px;overflow:hidden;border:1px solid var(--line);position:relative;box-shadow:0 26px 60px -32px rgba(0,0,0,.95)}
  .split-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
  .split-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,20,.05),rgba(7,11,20,.5));pointer-events:none}
  .check-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed rgba(148,178,255,.12);font-size:15px;color:var(--text-2)}
  .check-list li:last-child{border-bottom:0}
  .check-list i{color:var(--cyan);margin-top:6px;font-size:13px;flex-shrink:0}

  /* ---------- FAQ ---------- */
  .faq-list{border-top:1px solid var(--line);max-width:940px}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    background:transparent;border:0;color:var(--text);font-size:16px;font-weight:600;
    text-align:left;padding:22px 0;cursor:pointer;transition:color .18s var(--ease);min-height:44px;
  }
  .faq-q:hover{color:var(--cyan)}
  .faq-q:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:8px}
  .faq-i{color:var(--cyan);font-size:14px;transition:transform .22s var(--ease);flex-shrink:0}
  .faq-item.open .faq-i{transform:rotate(45deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
  .faq-a p{font-size:15px;line-height:1.8;color:var(--text-2);padding:0 0 22px;max-width:780px}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;border-radius:24px;padding:52px 48px;
    border:1px solid var(--line);
    background:linear-gradient(135deg,rgba(47,224,192,.13),rgba(139,123,255,.07) 62%,rgba(255,122,69,.08));
    box-shadow:var(--shadow-card);
  }
  .cta-band::before{
    content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
    background:radial-gradient(circle,rgba(47,224,192,.22),transparent 68%);pointer-events:none;
  }
  .cta-band h2{position:relative;font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.28;letter-spacing:-.01em;max-width:620px}
  .cta-band p{position:relative;margin-top:12px;font-size:15px;color:var(--text-2);max-width:600px}
  .cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

  /* ---------- 隐私 ---------- */
  .privacy-note{margin-top:26px;font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:6px 10px;align-items:center}
  .privacy-note a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
  .privacy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px}
  .privacy-card{padding:22px 22px;border-radius:var(--r-md);border:1px solid var(--line);background:rgba(255,255,255,.035)}
  .privacy-card h3{font-size:15px;font-weight:600;margin-bottom:6px;color:var(--text)}
  .privacy-card p{font-size:13px;color:var(--text-3);line-height:1.7}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--footer);border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
  .foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr;gap:36px}
  .foot-brand p{font-size:14px;color:var(--text-3);margin-top:16px;max-width:340px;line-height:1.8}
  .foot-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
  .foot-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
  .foot-col ul li{margin-bottom:11px}
  .foot-col ul li a{font-size:14px;color:var(--text-3);transition:color .18s var(--ease)}
  .foot-col ul li a:hover{color:var(--cyan)}
  .foot-col p{font-size:14px;color:var(--text-3);line-height:1.85}
  .foot-bottom{
    margin-top:52px;padding:22px 0;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
    font-size:13px;color:var(--text-3);
  }
  .to-top{display:inline-flex;align-items:center;gap:7px;color:var(--text-2);font-size:13px;transition:color .18s var(--ease)}
  .to-top:hover{color:var(--cyan)}

  /* ---------- 弹层 ---------- */
  .modal{position:fixed;inset:0;z-index:200;display:none}
  .modal.open{display:block}
  .modal-mask{position:absolute;inset:0;background:rgba(4,7,14,.72);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
  .modal-card{
    position:relative;z-index:2;width:calc(100% - 32px);max-width:480px;margin:8vh auto 0;
    background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:32px;
    box-shadow:0 40px 90px -40px rgba(0,0,0,1),inset 0 1px 0 rgba(255,255,255,.08);
    max-height:84vh;overflow-y:auto;
  }
  .modal-card h3{font-size:20px;font-weight:700;margin-bottom:6px}
  .modal-card .modal-sub{font-size:13px;color:var(--text-3);margin-bottom:22px}
  .modal-close{
    position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:10px;
    background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--text-2);
    display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .18s var(--ease);
  }
  .modal-close:hover{color:var(--cyan);border-color:rgba(47,224,192,.4)}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:12px;color:var(--text-3);margin-bottom:7px;letter-spacing:.02em}
  .field input,.field select,.field textarea{
    width:100%;padding:12px 14px;border-radius:10px;background:rgba(255,255,255,.05);
    border:1px solid var(--line);color:var(--text);font-size:14px;font-family:inherit;
    transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
    -webkit-appearance:none;appearance:none;
  }
  .field select{background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 19px) 21px,calc(100% - 14px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
  .field textarea{resize:vertical;min-height:82px}
  .field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,224,192,.16);
  }
  .check-row{display:flex;gap:10px;align-items:flex-start;margin:18px 0 22px}
  .check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--cyan);flex-shrink:0}
  .check-row span{font-size:12px;color:var(--text-3);line-height:1.7}
  .check-row a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
  .form-tip{font-size:12px;color:var(--orange);margin-top:10px;display:none}
  .form-tip.show{display:block}
  .form-ok{font-size:13px;color:var(--cyan);margin-top:14px;display:none}
  .form-ok.show{display:block}

  /* ---------- 移动端底部 Tab ---------- */
  .mobile-tab{
    position:fixed;left:0;right:0;bottom:0;z-index:80;display:none;
    background:rgba(7,11,20,.94);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .mobile-tab a{
    position:relative;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
    padding:9px 2px 8px;font-size:11px;letter-spacing:.02em;color:var(--text-3);min-height:56px;
    transition:color .18s var(--ease);
  }
  .mobile-tab a i{font-size:16px}
  .mobile-tab a.active{color:var(--cyan)}
  .mobile-tab a.active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:26px;height:2px;border-radius:2px;background:var(--cyan);box-shadow:0 0 12px rgba(47,224,192,.9);
  }
  .mobile-tab a.active i{filter:drop-shadow(0 0 8px rgba(47,224,192,.7))}

  /* ---------- 响应式 ---------- */
  @media (max-width:1180px){
    .main-nav{gap:18px}
    .main-nav a{font-size:14px}
  }
  @media (max-width:1023px){
    .main-nav{display:none}
    .header-inner{height:66px;gap:16px}
    .header-cta{margin-left:auto}
    .mobile-tab{display:flex}
    body{padding-bottom:76px}
    .hero{padding:112px 0 68px}
    .hero-grid{grid-template-columns:1fr;gap:36px}
    .stat-grid{grid-template-columns:repeat(2,1fr)}
    .foot-grid{grid-template-columns:repeat(2,1fr);gap:32px}
    .compare-grid{grid-template-columns:1fr}
    .split{grid-template-columns:1fr;gap:28px}
    .privacy-grid{grid-template-columns:1fr}
    .section{padding:72px 0}
    .cta-band{padding:40px 28px}
  }
  @media (max-width:767px){
    .container{padding:0 18px}
    .hero-copy h1{margin-top:14px}
    .hero-actions .btn{flex:1 1 auto}
    .tl-step{padding-left:0;padding-bottom:36px}
    .tl-step::before{display:none}
    .tl-num{position:static;margin-bottom:14px}
    .tl-body{padding:18px 18px}
    .section{padding:60px 0}
    .sec-head{margin-bottom:32px}
    .foot-bottom{flex-direction:column;align-items:flex-start}
    .modal-card{position:fixed;left:0;right:0;bottom:0;top:auto;margin:0;width:100%;max-width:100%;height:88%;border-radius:20px 20px 0 0;padding:26px 20px 30px}
  }
  @media (max-width:520px){
    .stat-grid{grid-template-columns:1fr}
    .hero-metrics{gap:10px}
    .metric{min-width:calc(50% - 5px);flex:1 1 calc(50% - 5px);padding:12px 14px}
    .foot-grid{grid-template-columns:1fr}
    .cta-actions .btn{width:100%}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
    .card:hover{transform:none}
    .btn:hover{transform:none}
  }

/* roulang page: category4 */
:root{
  --void:#070B14;
  --panel:#0B1120;
  --footer-bg:#05080F;
  --cyan:#2FE0C0;
  --cyan-deep:#0F9C87;
  --orange:#FF7A45;
  --purple:#8B7BFF;
  --text:#E9EFFA;
  --text-2:#9FAEC7;
  --text-3:#6C7B95;
  --line:rgba(148,178,255,.14);
  --line-strong:rgba(148,178,255,.26);
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.085);
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow-card:0 18px 40px -26px rgba(0,0,0,.95), inset 0 1px 0 rgba(255,255,255,.07);
  --shadow-card-hover:0 26px 52px -26px rgba(0,0,0,1), inset 0 1px 0 rgba(255,255,255,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1240px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--void);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
input,textarea,select{font:inherit;color:inherit;}
::selection{background:rgba(47,224,192,.28);color:#fff;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
}
.site-header.scrolled{
  background:rgba(7,11,20,.78);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:var(--header-h);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(47,224,192,.95),rgba(84,146,255,.55));
  color:#04201B;font-size:16px;
  box-shadow:0 0 0 1px rgba(47,224,192,.45),0 10px 22px -12px rgba(47,224,192,.9);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--text);}
.brand-text em{font-style:normal;color:var(--cyan);font-weight:800;}
.main-nav{display:flex;align-items:center;gap:2px;}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 13px;border-radius:9px;
  font-size:14px;font-weight:500;color:var(--text-2);
  transition:color .18s var(--ease),background .18s var(--ease);
  white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),rgba(47,224,192,0));
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.main-nav a:hover{color:var(--cyan);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--cyan);}
.main-nav a.active::after{transform:scaleX(1);}
.main-nav a:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.header-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:12px;
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .18s var(--ease),filter .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#41F2D4,#14AF95);
  color:#04241F;
  border:1px solid rgba(47,224,192,.55);
  box-shadow:0 12px 30px -14px rgba(47,224,192,.85),inset 0 1px 0 rgba(255,255,255,.42);
}
.btn-primary:hover{filter:brightness(1.07);box-shadow:0 18px 38px -14px rgba(47,224,192,.95),inset 0 1px 0 rgba(255,255,255,.55);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px -12px rgba(47,224,192,.7);}
.btn-ghost{
  background:transparent;border:1px solid var(--line);color:var(--text-2);
}
.btn-ghost:hover{border-color:rgba(47,224,192,.55);color:var(--text);background:rgba(47,224,192,.06);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.btn[disabled]{opacity:.6;pointer-events:none;}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--cyan);font-size:14px;font-weight:600;
  transition:gap .18s var(--ease),color .18s var(--ease);
}
.text-link i{font-size:11px;transition:transform .18s var(--ease);}
.text-link:hover{gap:10px;}
.text-link:hover i{transform:translateX(2px);}
.text-link:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px;}

/* ============ 标签 ============ */
.tag{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 11px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;line-height:1.6;
  color:var(--cyan);background:rgba(47,224,192,.09);
  border:1px solid rgba(47,224,192,.32);
  white-space:nowrap;
}
.tag-purple{color:#BFB6FF;background:rgba(139,123,255,.1);border-color:rgba(139,123,255,.34);}
.tag-orange{color:#FFB08D;background:rgba(255,122,69,.1);border-color:rgba(255,122,69,.34);}
.tag-muted{color:var(--text-2);background:rgba(255,255,255,.05);border-color:var(--line);}

/* ============ 卡片 ============ */
.card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.card::after{
  content:"";position:absolute;left:18px;right:18px;top:0;height:1px;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.34),transparent);
}
.card-hover:hover{
  transform:translateY(-4px);
  border-color:rgba(47,224,192,.34);
  box-shadow:var(--shadow-card-hover);
  background:var(--glass-2);
}

/* ============ 板块骨架 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;
}
.section-head h2{
  position:relative;
  font-size:clamp(22px,2.6vw,34px);
  font-weight:700;line-height:1.25;letter-spacing:-.015em;
  padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--cyan),rgba(47,224,192,.15));
}
.section-head p{margin-top:10px;padding-left:16px;color:var(--text-2);font-size:15px;max-width:640px;}
.section-head .head-link{flex:0 0 auto;}

/* ============ 内页 Banner ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:calc(var(--header-h) + 72px) 0 76px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(115deg,rgba(7,11,20,.94) 12%,rgba(7,11,20,.7) 52%,rgba(7,11,20,.9) 100%),url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.85;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(620px 320px at 12% 8%,rgba(47,224,192,.16),transparent 68%),
    radial-gradient(560px 340px at 88% 4%,rgba(139,123,255,.13),transparent 70%);
}
.page-hero .container{position:relative;z-index:1;}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.crumb a{color:var(--text-2);transition:color .18s var(--ease);}
.crumb a:hover{color:var(--cyan);}
.crumb i{font-size:10px;color:var(--text-3);}
.crumb .current{color:var(--cyan);}
.page-hero h1{
  font-size:clamp(30px,4.4vw,50px);
  font-weight:800;line-height:1.12;letter-spacing:-.02em;
  max-width:880px;
}
.page-hero h1 span{color:var(--cyan);}
.hero-sub{
  margin-top:20px;max-width:700px;
  font-size:clamp(15px,1.4vw,17px);line-height:1.85;color:var(--text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
  margin-top:44px;max-width:820px;
}
.metric{
  padding:18px 20px;border-radius:var(--radius-md);
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  backdrop-filter:blur(8px);
}
.metric .value{
  display:flex;align-items:baseline;gap:4px;
  font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1.1;color:var(--cyan);
  font-variant-numeric:tabular-nums;
}
.metric .value small{font-size:13px;font-weight:600;color:var(--text-2);}
.metric .label{margin-top:6px;font-size:13px;color:var(--text-2);}

/* ============ 瀑布卡片 ============ */
.masonry{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  align-items:start;
}
.venue-card{overflow:hidden;display:flex;flex-direction:column;}
.venue-card .thumb{
  position:relative;aspect-ratio:16/9;overflow:hidden;
  background:linear-gradient(140deg,#0E1730,#0A1222);
}
.venue-card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .3s var(--ease);
}
.venue-card:hover .thumb img{transform:scale(1.04);}
.venue-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.06),rgba(7,11,20,.55));
}
.venue-card .body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;}
.venue-card h3{font-size:18px;font-weight:600;line-height:1.45;}
.venue-card p{font-size:14px;line-height:1.8;color:var(--text-2);}
.venue-card .meta{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:4px;
  font-size:12px;color:var(--text-3);
}
.venue-card .meta span{
  padding:3px 9px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
}
.venue-card.tall .body{padding-bottom:28px;}

/* ============ 设备清单 ============ */
.equip-wrap{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:32px;align-items:start;
}
.equip-intro .lead{
  font-size:16px;line-height:1.9;color:var(--text-2);margin-top:16px;
}
.equip-intro .note{
  margin-top:22px;padding:16px 18px;border-radius:var(--radius-sm);
  background:rgba(47,224,192,.06);border:1px solid rgba(47,224,192,.22);
  font-size:14px;line-height:1.8;color:var(--text-2);
}
.equip-intro .note strong{color:var(--cyan);font-weight:600;}
.equip-groups{display:grid;gap:16px;}
.equip-group{padding:22px 24px;}
.equip-group .group-head{
  display:flex;align-items:center;gap:10px;margin-bottom:14px;
}
.equip-group .group-head i{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  font-size:13px;color:var(--cyan);
  background:rgba(47,224,192,.1);border:1px solid rgba(47,224,192,.28);
}
.equip-group h3{font-size:17px;font-weight:600;}
.equip-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 20px;}
.equip-list li{
  position:relative;padding-left:16px;font-size:14px;line-height:1.8;color:var(--text-2);
}
.equip-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;
  background:linear-gradient(135deg,var(--cyan),rgba(139,123,255,.8));
}

/* ============ 流程时间轴 ============ */
.flow-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;
  counter-reset:flow;
}
.flow-step{position:relative;padding:24px 22px 26px;}
.flow-step .step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  color:#04241F;background:linear-gradient(135deg,#41F2D4,#16B79C);
  box-shadow:0 8px 20px -12px rgba(47,224,192,.9);
}
.flow-step h3{margin-top:14px;font-size:17px;font-weight:600;}
.flow-step p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--text-2);}
.flow-step .tip{
  margin-top:14px;font-size:12px;color:var(--text-3);
  padding-top:12px;border-top:1px dashed var(--line);
}

/* ============ 数据带 ============ */
.data-band{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(11,17,32,.95),rgba(7,11,20,.95));
  padding:44px 40px;
}
.data-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(460px 220px at 10% 0%,rgba(47,224,192,.14),transparent 70%),
    radial-gradient(420px 200px at 92% 100%,rgba(255,122,69,.1),transparent 72%);
}
.data-band::after{
  content:"";position:absolute;left:-10%;right:-10%;bottom:-52%;height:120px;
  border-top:1px solid rgba(148,178,255,.12);
  border-radius:50%;transform:rotate(-4deg);pointer-events:none;
}
.data-band .inner{position:relative;z-index:1;}
.data-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin-top:28px;
}
.data-item .figure{
  font-size:clamp(30px,4vw,44px);font-weight:800;line-height:1.05;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  color:var(--text);
}
.data-item:nth-child(2) .figure{color:var(--cyan);}
.data-item:nth-child(3) .figure{color:var(--orange);}
.data-item .figure small{font-size:14px;font-weight:600;color:var(--text-2);margin-left:4px;}
.data-item .desc{margin-top:10px;font-size:13px;line-height:1.7;color:var(--text-3);}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--cyan);}
.faq-q:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
.faq-q .icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;color:var(--cyan);
  border:1px solid rgba(47,224,192,.3);background:rgba(47,224,192,.07);
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq-item.open .faq-q{color:var(--cyan);}
.faq-item.open .faq-q .icon{transform:rotate(180deg);background:rgba(47,224,192,.16);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a p{
  padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:920px;
}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid rgba(47,224,192,.25);
  background:linear-gradient(140deg,rgba(17,32,52,.92),rgba(9,14,26,.94));
  padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:0 30px 60px -40px rgba(47,224,192,.55),inset 0 1px 0 rgba(255,255,255,.1);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(420px 220px at 82% 10%,rgba(47,224,192,.2),transparent 70%);
}
.cta-band .inner{position:relative;z-index:1;max-width:640px;}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;}
.cta-band p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--text-2);}
.cta-band .actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap;}

.privacy-note{
  margin-top:18px;font-size:12.5px;line-height:1.8;color:var(--text-3);
}
.privacy-note a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--footer-bg);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  margin-top:20px;
}
.foot-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid var(--line);
}
.foot-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--text-2);max-width:360px;}
.foot-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.foot-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em;}
.foot-col ul{display:grid;gap:10px;}
.foot-col a{font-size:14px;color:var(--text-2);transition:color .18s var(--ease);}
.foot-col a:hover{color:var(--cyan);}
.foot-col p{font-size:14px;line-height:1.9;color:var(--text-2);}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;font-size:13px;color:var(--text-3);
}
.to-top{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;color:var(--text-2);
  padding:8px 14px;border-radius:999px;border:1px solid var(--line);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.to-top:hover{color:var(--cyan);border-color:rgba(47,224,192,.45);background:rgba(47,224,192,.06);}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:130;
  background:rgba(7,11,20,.92);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-top:1px solid var(--line);
  padding:8px 6px calc(8px + env(safe-area-inset-bottom,0px));
}
.mobile-tab ul{display:flex;align-items:stretch;justify-content:space-around;}
.mobile-tab a{
  position:relative;flex:1;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:48px;padding:4px 2px;border-radius:10px;
  font-size:11px;letter-spacing:.02em;color:var(--text-3);
  transition:color .18s var(--ease);
}
.mobile-tab a i{font-size:16px;}
.mobile-tab a.active{color:var(--cyan);}
.mobile-tab a.active::before{
  content:"";position:absolute;top:-8px;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--cyan);
  box-shadow:0 0 10px rgba(47,224,192,.9);
}
.mobile-tab a:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}

/* ============ 表单弹层 ============ */
.modal-mask{
  position:fixed;inset:0;z-index:200;
  display:none;align-items:center;justify-content:center;
  padding:24px;
  background:rgba(4,7,14,.72);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}
.modal-mask.open{display:flex;}
.modal-card{
  position:relative;width:100%;max-width:480px;max-height:90vh;overflow-y:auto;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(17,26,44,.98),rgba(9,14,26,.99));
  box-shadow:0 40px 80px -40px rgba(0,0,0,1),inset 0 1px 0 rgba(255,255,255,.1);
  padding:28px 26px 26px;
  animation:modalIn .24s var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:translateY(0);}}
.modal-card h3{font-size:20px;font-weight:700;letter-spacing:-.01em;}
.modal-card .modal-sub{margin-top:8px;font-size:13.5px;line-height:1.75;color:var(--text-2);}
.modal-close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.modal-close:hover{color:var(--cyan);border-color:rgba(47,224,192,.45);}
.form-grid{display:grid;gap:14px;margin-top:22px;}
.field{display:grid;gap:6px;}
.field label{font-size:12px;letter-spacing:.02em;color:var(--text-2);}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;border-radius:var(--radius-xs);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  font-size:14px;color:var(--text);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:rgba(47,224,192,.7);
  box-shadow:0 0 0 3px rgba(47,224,192,.16);
  background:rgba(255,255,255,.07);
}
.field textarea{resize:vertical;min-height:82px;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 13px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.field select option{background:#0B1120;color:var(--text);}
.check-row{display:flex;align-items:flex-start;gap:9px;font-size:12.5px;line-height:1.7;color:var(--text-2);}
.check-row input{
  width:16px;height:16px;margin-top:3px;flex:0 0 auto;accent-color:#2FE0C0;
  border-radius:4px;
}
.check-row a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px;}
.form-tip{font-size:12px;line-height:1.7;color:var(--text-3);}
.form-msg{display:none;margin-top:12px;padding:10px 12px;border-radius:var(--radius-xs);font-size:13px;}
.form-msg.ok{display:block;color:#9BF0DE;background:rgba(47,224,192,.1);border:1px solid rgba(47,224,192,.32);}
.form-msg.err{display:block;color:#FFB08D;background:rgba(255,122,69,.1);border:1px solid rgba(255,122,69,.4);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .masonry{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .mobile-tab{display:block;}
  body{padding-bottom:76px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .equip-wrap{grid-template-columns:minmax(0,1fr);gap:24px;}
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .data-band{padding:34px 28px;}
  .cta-band{padding:34px 28px;}
  .page-hero{padding:calc(var(--header-h) + 52px) 0 60px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .header-inner{min-height:64px;gap:12px;}
  .brand-text{font-size:16px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .hero-metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;}
  .metric{padding:14px 12px;}
  .metric .label{font-size:12px;}
  .masonry{grid-template-columns:minmax(0,1fr);}
  .flow-grid{grid-template-columns:minmax(0,1fr);}
  .data-grid{grid-template-columns:minmax(0,1fr);gap:22px;}
  .equip-list{grid-template-columns:minmax(0,1fr);}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-band .actions{width:100%;}
  .cta-band .actions .btn{flex:1;}
  .foot-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .modal-card{max-width:100%;max-height:88vh;border-radius:20px 20px 0 0;align-self:flex-end;}
  .modal-mask{padding:0;align-items:flex-end;}
  .hero-actions .btn{width:100%;}
  .faq-q{font-size:15px;padding:18px 2px;}
  .data-band, .cta-band{padding:26px 20px;}
}
@media (max-width:520px){
  .hero-metrics{grid-template-columns:minmax(0,1fr);}
  .metric{display:flex;align-items:baseline;gap:10px;}
  .metric .label{margin-top:0;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category5 */
:root{
  --void:#070B14;
  --panel:#0B1120;
  --footer:#05080F;
  --cyan:#2FE0C0;
  --cyan-deep:#0E9E8A;
  --orange:#FF7A45;
  --purple:#8B7BFF;
  --text:#E9EFFA;
  --sub:#9FAEC7;
  --muted:#6C7B95;
  --line:rgba(148,178,255,0.14);
  --glass:rgba(255,255,255,0.055);
  --r-card:18px;
  --r-btn:11px;
  --shadow-card:0 22px 50px -34px rgba(0,0,0,0.9), inset 0 1px 0 rgba(255,255,255,0.1);
  --shadow-card-hover:0 28px 60px -34px rgba(0,0,0,0.95), inset 0 1px 0 rgba(255,255,255,0.16);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.page-body{
  margin:0;
  background:var(--void);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:15.5px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure{margin:0}
ul{list-style:none;margin:0;padding:0}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  border-bottom:1px solid transparent;
  background:transparent;
  transition:background .22s ease,border-color .22s ease,backdrop-filter .22s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,0.84);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;gap:26px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-size:15px;color:#04121A;
  background:linear-gradient(135deg,#5CF3DA,#1FB9A4);
  box-shadow:0 0 0 1px rgba(47,224,192,0.4),0 8px 22px -10px rgba(47,224,192,0.8);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text)}
.brand-text em{font-style:normal;color:var(--cyan);margin-left:2px}
.main-nav{display:flex;align-items:center;gap:20px;margin-left:6px}
.main-nav a{
  position:relative;font-size:14px;color:var(--sub);padding:6px 0;white-space:nowrap;
  transition:color .2s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),rgba(47,224,192,0));
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.main-nav a:hover{color:var(--text)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--cyan)}
.main-nav a.active::after{transform:scaleX(1)}
.header-cta{margin-left:auto;display:flex;align-items:center;gap:10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn-primary{
  color:#04121A;
  background:linear-gradient(135deg,#59F2D8,#22C6AE);
  box-shadow:0 0 0 1px rgba(47,224,192,0.45),0 14px 34px -14px rgba(47,224,192,0.75);
}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(47,224,192,0.6),0 18px 42px -14px rgba(47,224,192,0.85)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,224,192,0.4),0 8px 20px -12px rgba(47,224,192,0.6)}
.btn-ghost{color:var(--text);border:1px solid var(--line);background:rgba(255,255,255,0.02)}
.btn-ghost:hover{border-color:rgba(47,224,192,0.55);color:var(--cyan)}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:10px}
.btn-block{width:100%}
.btn:focus-visible{outline:2px solid rgba(47,224,192,0.75);outline-offset:3px}
.btn[disabled]{opacity:.6;pointer-events:none}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;
  color:var(--cyan);border:1px solid rgba(47,224,192,0.35);background:rgba(47,224,192,0.08);
}
.tag-purple{color:#B9AFFF;border-color:rgba(139,123,255,0.4);background:rgba(139,123,255,0.1)}
.tag-orange{color:#FFA07A;border-color:rgba(255,122,69,0.4);background:rgba(255,122,69,0.1)}

/* ---------- 主区 ---------- */
.page-main{padding-top:72px}
.section{padding:88px 0;position:relative}
.sec-head{max-width:740px;margin-bottom:38px}
.sec-kicker{
  display:inline-block;position:relative;padding-left:13px;margin-bottom:12px;
  font-size:12.5px;letter-spacing:.14em;color:var(--cyan);
}
.sec-kicker::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:14px;border-radius:2px;background:var(--cyan);
}
.sec-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.28;margin-bottom:12px;letter-spacing:-.01em}
.sec-head p{color:var(--sub);font-size:15px;max-width:640px}

/* ---------- Hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:60px 0 84px;background:var(--void)}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.3;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 420px at 80% 6%,rgba(47,224,192,0.16),transparent 62%),
    radial-gradient(720px 380px at 6% 92%,rgba(139,123,255,0.14),transparent 66%),
    linear-gradient(180deg,rgba(7,11,20,0.5),rgba(7,11,20,0.96));
}
.page-hero > .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;margin-bottom:20px;
  border-radius:999px;font-size:12.5px;letter-spacing:.04em;color:var(--cyan);
  border:1px solid rgba(47,224,192,0.32);background:rgba(47,224,192,0.07);
}
.hero-title{
  font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.14;letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero-title .mark{
  background:linear-gradient(135deg,#6FF6E0,#26C9B1);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:16px;color:var(--sub);max-width:580px;margin-bottom:6px}
.hero-metrics{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
  margin:26px 0 22px;padding-top:22px;border-top:1px solid var(--line);
}
.metric-num{font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1.1;color:var(--cyan);font-variant-numeric:tabular-nums}
.metric-num span{font-size:13px;font-weight:600;color:var(--sub);margin-left:4px}
.metric-desc{font-size:12.5px;color:var(--muted);margin-top:6px;line-height:1.5}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 表单卡 ---------- */
.hero-form{
  position:relative;border-radius:20px;padding:26px;
  background:linear-gradient(180deg,rgba(255,255,255,0.078),rgba(255,255,255,0.035));
  border:1px solid var(--line);
  box-shadow:0 30px 70px -40px rgba(0,0,0,0.95), inset 0 1px 0 rgba(255,255,255,0.14);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.hero-form::before{
  content:"";position:absolute;left:16px;right:16px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,224,192,0.7),transparent);
}
.form-title{font-size:19px;font-weight:700;line-height:1.4;margin-bottom:6px}
.form-note{font-size:13px;color:var(--sub);margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:12px;color:var(--sub);letter-spacing:.02em;margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;padding:11px 12px;border-radius:10px;
  background:rgba(255,255,255,0.045);border:1px solid var(--line);
  font-size:14px;color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
  appearance:none;-webkit-appearance:none;
}
.field textarea{resize:vertical;min-height:76px;line-height:1.65}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:rgba(47,224,192,0.7);
  box-shadow:0 0 0 3px rgba(47,224,192,0.14);background:rgba(47,224,192,0.05);
}
.field select option{background:#0B1120;color:var(--text)}
.field.is-error input,.field.is-error select,.field.is-error textarea{border-color:rgba(255,122,69,0.75)}
.field-error{display:none;font-size:12px;color:#FFA07A;margin-top:5px}
.field.is-error .field-error{display:block}
.check{display:flex;align-items:flex-start;gap:9px;font-size:12.5px;color:var(--sub);line-height:1.6;margin:4px 0 16px}
.check input{width:16px;height:16px;margin-top:2px;flex-shrink:0;accent-color:#2FE0C0}
.check a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.form-tip{font-size:12px;color:var(--muted);margin-top:12px;text-align:center;line-height:1.6}
.form-tip.is-ok{color:var(--cyan)}

/* ---------- 通用卡片 ---------- */
.card{
  position:relative;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,0.062),rgba(255,255,255,0.03));
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(47,224,192,0.32);box-shadow:var(--shadow-card-hover)}
.card::before{
  content:"";position:absolute;left:16px;right:16px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,0.22),transparent);
}
.card h3{font-size:18px;font-weight:600;line-height:1.45;margin:10px 0 8px}
.card p{font-size:14px;color:var(--sub);line-height:1.75}

/* ---------- 能力四卡 ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.cap-card{padding:26px}
.cap-index{
  font-size:12px;letter-spacing:.16em;color:var(--muted);font-variant-numeric:tabular-nums;
}
.cap-list{margin-top:14px;display:grid;gap:7px}
.cap-list li{
  position:relative;padding-left:15px;font-size:13px;color:var(--sub);line-height:1.6;
}
.cap-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;
  background:var(--cyan);opacity:.85;
}

/* ---------- 图文分栏 ---------- */
.split-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center}
.split-media{
  position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);
  box-shadow:0 30px 70px -44px rgba(0,0,0,0.95), inset 0 1px 0 rgba(255,255,255,0.12);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.split-media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 16px 12px;font-size:12.5px;color:var(--sub);
  background:linear-gradient(180deg,transparent,rgba(7,11,20,0.92));
}
.split-copy h2{font-size:clamp(22px,2.5vw,30px);font-weight:700;line-height:1.3;margin-bottom:14px;letter-spacing:-.01em}
.split-copy p{color:var(--sub);font-size:15px;margin-bottom:18px;max-width:540px}
.dot-list{display:grid;gap:12px;margin-bottom:26px}
.dot-list li{position:relative;padding-left:24px;font-size:14.5px;color:var(--text);line-height:1.7}
.dot-list li i{position:absolute;left:0;top:4px;font-size:12px;color:var(--cyan)}
.dot-list li span{color:var(--sub);font-size:13.5px;display:block;margin-top:2px}

/* ---------- 流程 ---------- */
.flow-section{background:linear-gradient(180deg,rgba(11,17,32,0.85),rgba(7,11,20,0.2))}
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.flow-step{
  position:relative;padding:24px 20px;border-radius:16px;
  background:rgba(255,255,255,0.035);border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.flow-step:hover{transform:translateY(-4px);border-color:rgba(47,224,192,0.3);background:rgba(47,224,192,0.05)}
.flow-num{
  display:inline-grid;place-items:center;width:36px;height:36px;border-radius:11px;
  font-size:14px;font-weight:700;color:var(--cyan);font-variant-numeric:tabular-nums;
  border:1px solid rgba(47,224,192,0.35);background:rgba(47,224,192,0.08);margin-bottom:14px;
}
.flow-step h3{font-size:16px;font-weight:600;margin-bottom:8px}
.flow-step p{font-size:13.5px;color:var(--sub);line-height:1.72}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 2px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  transition:color .18s ease;min-height:44px;
}
.faq-q:hover{color:var(--cyan)}
.faq-q:focus-visible{outline:2px solid rgba(47,224,192,0.7);outline-offset:2px;border-radius:8px}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;display:grid;place-items:center;border-radius:8px;
  border:1px solid var(--line);color:var(--sub);font-size:12px;
  transition:transform .22s ease,color .22s ease,border-color .22s ease;
}
.faq-item.open .faq-icon{transform:rotate(180deg);color:var(--cyan);border-color:rgba(47,224,192,0.45)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 2px 20px;font-size:15px;color:var(--sub);line-height:1.8;max-width:840px}
.faq-item.open .faq-a{max-height:420px}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:22px;padding:46px 40px;
  border:1px solid var(--line);
  box-shadow:0 34px 80px -46px rgba(0,0,0,0.95), inset 0 1px 0 rgba(255,255,255,0.12);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.22;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(620px 300px at 82% 12%,rgba(47,224,192,0.18),transparent 64%),
    linear-gradient(120deg,rgba(7,11,20,0.96),rgba(7,11,20,0.72));
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(21px,2.4vw,29px);font-weight:700;line-height:1.32;margin-bottom:10px;letter-spacing:-.01em}
.cta-inner p{font-size:14.5px;color:var(--sub);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 隐私说明 ---------- */
.privacy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.privacy-item{
  padding:22px;border-radius:16px;border:1px solid var(--line);
  background:rgba(255,255,255,0.03);
}
.privacy-item h3{font-size:15px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.privacy-item h3 i{color:var(--cyan);font-size:13px}
.privacy-item p{font-size:13.5px;color:var(--sub);line-height:1.7}
.privacy-strip{
  padding:18px 0 0;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);line-height:1.8;
}
.privacy-strip a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);border-top:1px solid var(--line);padding:56px 0 0;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.15fr;gap:36px;padding-bottom:40px}
.foot-brand p{font-size:13.5px;color:var(--sub);margin:14px 0 16px;line-height:1.8;max-width:350px}
.foot-tags{display:flex;gap:8px;flex-wrap:wrap}
.foot-col h4{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--text)}
.foot-col ul li{margin-bottom:10px}
.foot-col a,.foot-col p{font-size:13.5px;color:var(--sub);line-height:1.8}
.foot-col a{transition:color .18s ease}
.foot-col a:hover{color:var(--cyan)}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0 26px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);line-height:1.7;
}
.to-top{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--sub);transition:color .18s ease}
.to-top:hover{color:var(--cyan)}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tab{display:none}

/* ---------- 表单弹层 ---------- */
.modal{position:fixed;inset:0;z-index:90;display:none}
.modal.is-open{display:block}
.modal-mask{position:absolute;inset:0;background:rgba(4,7,14,0.72);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.modal-card{
  position:relative;z-index:2;width:min(480px,calc(100% - 32px));margin:7vh auto 0;
  max-height:86vh;overflow:auto;border-radius:20px;padding:28px;
  background:linear-gradient(180deg,#0F1728,#0A1120);
  border:1px solid var(--line);
  box-shadow:0 40px 90px -40px #000, inset 0 1px 0 rgba(255,255,255,0.12);
}
.modal-close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;color:var(--sub);
  border:1px solid var(--line);background:rgba(255,255,255,0.04);
  transition:color .18s ease,border-color .18s ease;
}
.modal-close:hover{color:var(--cyan);border-color:rgba(47,224,192,0.5)}
.modal-close:focus-visible{outline:2px solid rgba(47,224,192,0.75);outline-offset:2px}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .main-nav{gap:14px}
  .main-nav a{font-size:13px}
  .header-inner{gap:18px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .header-inner{height:64px}
  .site-header{background:rgba(7,11,20,0.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:var(--line)}
  .page-main{padding-top:64px}
  .page-body{padding-bottom:78px}
  .mobile-tab{
    display:grid;grid-template-columns:repeat(5,1fr);
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(7,11,20,0.94);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border-top:1px solid var(--line);
    padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  }
  .mobile-tab a{
    position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    min-height:48px;border-radius:10px;font-size:11px;letter-spacing:.02em;color:var(--muted);
    transition:color .18s ease;
  }
  .mobile-tab a i{font-size:16px}
  .mobile-tab a.active{
    color:var(--cyan);
    box-shadow:inset 0 0 0 1px rgba(47,224,192,0.35),0 0 16px -6px rgba(47,224,192,0.7);
  }
  .mobile-tab a.active::before{
    content:"";position:absolute;top:-6px;left:18%;right:18%;height:2px;border-radius:2px;
    background:var(--cyan);box-shadow:0 0 10px rgba(47,224,192,0.9);
  }
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .split-grid{grid-template-columns:1fr;gap:32px}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .privacy-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .page-hero{padding:44px 0 64px}
  .section{padding:68px 0}
  .cta-band{padding:34px 26px}
  .modal-card{margin:0;position:fixed;left:0;right:0;bottom:0;top:auto;width:100%;max-height:88vh;border-radius:20px 20px 0 0}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .cap-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr}
  .hero-metrics{grid-template-columns:1fr;gap:14px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions .btn{width:100%}
  .hero-form{padding:20px}
  .faq-q{font-size:15px;padding:17px 2px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .card:hover,.flow-step:hover,.btn:active{transform:none}
}