/* roulang page: index */
:root{
  --deep:#07152b;
  --ink:#0b1f3d;
  --ink-2:#123056;
  --cyan:#22d3ee;
  --cyan-soft:#7ee7f7;
  --cyan-deep:#0e8fa8;
  --gold:#f6c453;
  --bg:#f4f8fc;
  --bg-alt:#eaf2fa;
  --surface:#ffffff;
  --text:#0f2038;
  --muted:#5a6b83;
  --line:#e1eaf4;
  --radius-xl:22px;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(11,31,61,.06);
  --shadow-md:0 16px 36px rgba(11,31,61,.10);
  --shadow-lg:0 28px 64px rgba(11,31,61,.16);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
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{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,21,43,.94);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 12px 34px rgba(3,12,26,.46);}
.header-inner{height:64px;display:flex;align-items:center;gap:16px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.02rem;letter-spacing:.01em;white-space:nowrap;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,#22d3ee,#3b82f6);color:#04182e;
  font-weight:800;font-size:.96rem;box-shadow:0 8px 18px rgba(34,211,238,.34);
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{position:relative;padding:8px 14px;border-radius:9px;color:rgba(255,255,255,.72);font-size:.94rem;transition:color .2s,background .2s;white-space:nowrap;}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08);}
.nav-link.active{color:var(--cyan-soft);background:rgba(34,211,238,.13);}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;background:linear-gradient(90deg,#22d3ee,#67e8f9);}
.stage-chips{display:flex;gap:6px;margin-left:6px;}
.stage-chip{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
  font-size:.75rem;border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.72);
}
.stage-chip i{width:6px;height:6px;border-radius:50%;background:currentColor;display:block;}
.stage-chip.on{color:var(--cyan-soft);border-color:rgba(34,211,238,.5);background:rgba(34,211,238,.12);}
.stage-chip.warm{color:var(--gold);border-color:rgba(246,196,83,.42);}
.stage-chip.cool{color:rgba(255,255,255,.58);}
.header-cta{
  padding:9px 18px;border-radius:10px;font-weight:700;font-size:.9rem;
  background:linear-gradient(135deg,#22d3ee,#38bdf8);color:#04182e;
  transition:transform .2s,box-shadow .2s;white-space:nowrap;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(34,211,238,.4);}
.nav-toggle{
  display:none;margin-left:auto;width:40px;height:40px;border-radius:10px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  color:#fff;cursor:pointer;align-items:center;justify-content:center;
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--deep);color:#fff;padding:88px 0 78px;}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.24;}
.hero-veil{
  position:absolute;inset:0;
  background:
    radial-gradient(920px 480px at 16% 4%,rgba(34,211,238,.30),transparent 62%),
    radial-gradient(760px 420px at 84% 16%,rgba(59,130,246,.24),transparent 62%),
    linear-gradient(180deg,rgba(7,21,43,.86) 0%,rgba(7,21,43,.95) 100%);
}
.hero-glow{position:absolute;border-radius:50%;filter:blur(88px);pointer-events:none;}
.hero-glow.g1{width:430px;height:430px;background:#22d3ee;top:-150px;left:-110px;opacity:.5;}
.hero-glow.g2{width:360px;height:360px;background:#3b82f6;bottom:-170px;right:-90px;opacity:.4;}
.hero-glow.g3{width:260px;height:260px;background:#f6c453;top:28%;right:24%;opacity:.14;}
.hero-inner{position:relative;z-index:2;max-width:900px;margin:0 auto;text-align:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;
  background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.38);
  color:var(--cyan-soft);font-size:.82rem;letter-spacing:.06em;margin-bottom:22px;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--cyan-soft);display:block;}
.hero h1{
  font-size:clamp(1.9rem,4.1vw,2.75rem);line-height:1.32;font-weight:800;letter-spacing:-.01em;
  margin:0 0 20px;text-shadow:0 8px 30px rgba(0,0,0,.35);
}
.hero-lead{max-width:780px;margin:0 auto;color:rgba(255,255,255,.82);font-size:1rem;line-height:1.85;}
.hero-points{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:26px 0 0;}
.hero-point{
  display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  font-size:.85rem;color:rgba(255,255,255,.9);
}
.hero-point span{width:5px;height:5px;border-radius:50%;background:var(--gold);display:block;}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:32px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:11px;font-weight:700;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
}
.btn-primary{background:linear-gradient(135deg,#22d3ee,#38bdf8);color:#04182e;box-shadow:0 12px 30px rgba(34,211,238,.3);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(34,211,238,.4);}
.btn-ghost{background:rgba(255,255,255,.09);color:#fff;border-color:rgba(255,255,255,.34);}
.btn-ghost:hover{background:rgba(255,255,255,.17);transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm);}
.btn-outline:hover{border-color:#b7d6ee;color:var(--cyan-deep);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:46px;
  padding:18px;border-radius:var(--radius-xl);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.13);
  backdrop-filter:blur(8px);
}
.hero-stat b{display:block;font-size:1.4rem;font-weight:800;color:var(--cyan-soft);line-height:1.2;}
.hero-stat span{display:block;font-size:.82rem;color:rgba(255,255,255,.66);margin-top:4px;}

/* ---------- Sections ---------- */
.section{padding:74px 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:var(--deep);color:#fff;}
.section-head{max-width:740px;margin:0 auto 42px;text-align:center;}
.section-head-left{max-width:none;margin:0 0 34px;text-align:left;}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;
  letter-spacing:.14em;color:var(--cyan-deep);margin-bottom:12px;text-transform:uppercase;
}
.section-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,#22d3ee,#38bdf8);}
.section-dark .section-eyebrow{color:var(--cyan-soft);}
.section-title{font-size:clamp(1.35rem,2.5vw,1.72rem);font-weight:800;line-height:1.4;letter-spacing:-.01em;}
.section-sub{margin-top:12px;color:var(--muted);font-size:.96rem;line-height:1.8;}
.section-dark .section-sub{color:rgba(255,255,255,.7);}
.section-head-left .section-sub{max-width:660px;}

/* ---------- KPI ---------- */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.kpi-card{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#ffffff 0%,#f2f9ff 100%);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.kpi-card::before{
  content:"";position:absolute;top:0;right:0;width:74px;height:74px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.24),transparent 70%);
}
.kpi-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bcdcf0;}
.kpi-card b{display:block;font-size:1.9rem;font-weight:800;color:var(--ink);line-height:1.15;letter-spacing:-.02em;}
.kpi-card b em{font-style:normal;font-size:.95rem;color:var(--cyan-deep);margin-left:2px;}
.kpi-card p{margin-top:8px;font-size:.88rem;color:var(--muted);line-height:1.7;}

/* ---------- Cards ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);padding:26px 24px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c6ddef;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.icon-box{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(34,211,238,.16),rgba(59,130,246,.14));
  color:var(--cyan-deep);margin-bottom:16px;
}
.icon-box svg{width:22px;height:22px;}
.card h3{font-size:1.05rem;font-weight:700;margin-bottom:9px;line-height:1.5;}
.card p{font-size:.92rem;color:var(--muted);line-height:1.78;}
.tag{
  display:inline-flex;align-items:center;padding:3px 11px;border-radius:999px;
  background:rgba(34,211,238,.12);color:var(--cyan-deep);
  font-size:.76rem;font-weight:600;letter-spacing:.02em;
}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}

/* ---------- Channel matrix ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.channel-card{
  position:relative;display:block;overflow:hidden;
  padding:28px 24px;border-radius:var(--radius-xl);
  background:linear-gradient(150deg,#0b1f3d 0%,#123056 60%,#173f6e 100%);
  color:#fff;border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-md);
  transition:transform .22s ease,box-shadow .22s ease;
}
.channel-card::after{
  content:"";position:absolute;width:180px;height:180px;border-radius:50%;
  right:-70px;bottom:-90px;background:radial-gradient(circle,rgba(34,211,238,.4),transparent 68%);
  transition:opacity .22s ease;
}
.channel-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
.channel-card:hover::after{opacity:.9;}
.channel-num{font-size:.78rem;letter-spacing:.2em;color:var(--cyan-soft);font-weight:700;}
.channel-card h3{font-size:1.12rem;font-weight:800;margin:10px 0 10px;}
.channel-card p{font-size:.9rem;color:rgba(255,255,255,.72);line-height:1.75;}
.channel-more{display:inline-flex;align-items:center;gap:7px;margin-top:18px;font-size:.86rem;font-weight:700;color:var(--cyan-soft);}
.channel-more svg{width:15px;height:15px;transition:transform .2s ease;}
.channel-card:hover .channel-more svg{transform:translateX(4px);}

/* ---------- Compare ---------- */
.compare-scroll{overflow-x:auto;border-radius:var(--radius-lg);}
.compare{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);min-width:600px;}
.compare-row{display:grid;grid-template-columns:1.05fr 1fr 1fr;}
.compare-row > div{padding:17px 22px;border-bottom:1px solid var(--line);font-size:.93rem;line-height:1.7;}
.compare-row:last-child > div{border-bottom:none;}
.compare-head > div{background:var(--ink);color:#fff;font-weight:700;font-size:.88rem;letter-spacing:.04em;border-bottom:none;}
.compare-head > div:nth-child(3){background:#1a4a7d;}
.compare-dim{color:var(--muted);font-weight:700;background:#f7fbff;}
.compare-bad{color:#8a6a3d;}
.compare-good{color:#0e6f88;font-weight:600;}

/* ---------- Scenario ---------- */
.scene-card{
  display:flex;gap:18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c6ddef;}
.scene-badge{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#0b1f3d,#1a4a7d);color:var(--cyan-soft);
  font-weight:800;font-size:.9rem;
}
.scene-card h3{font-size:1rem;font-weight:700;margin-bottom:6px;}
.scene-card p{font-size:.9rem;color:var(--muted);line-height:1.75;}

/* ---------- Timeline ---------- */
.timeline{position:relative;padding-left:6px;}
.timeline::before{
  content:"";position:absolute;left:21px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,rgba(34,211,238,.7),rgba(59,130,246,.12));
}
.tl-item{position:relative;padding:0 0 26px 62px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:10px;top:2px;width:24px;height:24px;border-radius:50%;
  background:#fff;border:2px solid var(--cyan);display:grid;place-items:center;
  box-shadow:0 0 0 5px rgba(34,211,238,.12);
}
.tl-dot i{width:7px;height:7px;border-radius:50%;background:var(--cyan);display:block;}
.tl-item h3{font-size:1.02rem;font-weight:700;margin-bottom:6px;}
.tl-item p{font-size:.92rem;color:var(--muted);line-height:1.78;}

/* ---------- Topic cards ---------- */
.topic-card{
  overflow:hidden;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c6ddef;}
.topic-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#dbe8f4;}
.topic-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.topic-card:hover .topic-thumb img{transform:scale(1.05);}
.topic-body{padding:20px 22px 24px;}
.topic-body h3{font-size:1.02rem;font-weight:700;margin-bottom:8px;}
.topic-body p{font-size:.9rem;color:var(--muted);line-height:1.75;}

/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:1.65fr 1fr;gap:26px;align-items:start;}
.news-main{display:flex;flex-direction:column;gap:14px;}
.news-item{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:20px 22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c6ddef;}
.news-item-top{display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.news-time{font-size:.78rem;color:#8b9bb1;}
.news-item h3{font-size:1rem;font-weight:700;line-height:1.55;margin-bottom:7px;}
.news-item p{font-size:.88rem;color:var(--muted);line-height:1.72;}
.news-side{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--shadow-sm);
}
.news-side h3{font-size:.95rem;font-weight:800;margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.news-side h3::before{content:"";width:4px;height:16px;border-radius:2px;background:linear-gradient(180deg,#22d3ee,#3b82f6);}
.side-item{
  display:flex;align-items:flex-start;gap:10px;padding:11px 0;
  border-bottom:1px dashed var(--line);transition:color .2s ease;
}
.side-item:last-child{border-bottom:none;padding-bottom:0;}
.side-item:hover .side-title{color:var(--cyan-deep);}
.side-dot{flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--cyan);margin-top:9px;}
.side-title{font-size:.88rem;line-height:1.6;transition:color .2s ease;}
.side-date{display:block;font-size:.75rem;color:#95a5b9;margin-top:2px;}
.news-empty{font-size:.9rem;color:var(--muted);padding:18px 0;}

/* ---------- Steps ---------- */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step;}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:34px 24px 26px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c6ddef;}
.step-no{
  position:absolute;top:-16px;left:24px;width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;font-weight:800;font-size:1rem;
  background:linear-gradient(135deg,#22d3ee,#3b82f6);color:#04182e;
  box-shadow:0 10px 22px rgba(34,211,238,.28);
}
.step-card h3{font-size:1rem;font-weight:700;margin:6px 0 8px;}
.step-card p{font-size:.9rem;color:var(--muted);line-height:1.78;}

/* ---------- Myth ---------- */
.myth-list{display:flex;flex-direction:column;gap:16px;}
.myth{
  display:grid;grid-template-columns:1fr 1fr;gap:0;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;
  box-shadow:var(--shadow-sm);
}
.myth > div{padding:22px 24px;}
.myth-wrong{background:#fdf7ec;border-right:1px solid var(--line);}
.myth-label{display:inline-flex;align-items:center;gap:7px;font-size:.78rem;font-weight:700;letter-spacing:.06em;margin-bottom:8px;}
.myth-wrong .myth-label{color:#a97a22;}
.myth-right .myth-label{color:var(--cyan-deep);}
.myth p{font-size:.9rem;color:var(--muted);line-height:1.75;}

/* ---------- Guarantee ---------- */
.guard-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.guard{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-lg);padding:24px 20px;
  transition:background .2s ease,transform .2s ease,border-color .2s ease;
}
.guard:hover{background:rgba(255,255,255,.1);transform:translateY(-3px);border-color:rgba(34,211,238,.4);}
.guard-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(34,211,238,.14);color:var(--cyan-soft);margin-bottom:14px;
}
.guard-icon svg{width:20px;height:20px;}
.guard h3{font-size:.98rem;font-weight:700;margin-bottom:7px;color:#fff;}
.guard p{font-size:.86rem;color:rgba(255,255,255,.66);line-height:1.72;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#b4d6ee;box-shadow:var(--shadow-sm);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;font-weight:700;font-size:.97rem;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  display:grid;place-items:center;font-size:1.05rem;font-weight:600;
  color:var(--cyan-deep);background:rgba(34,211,238,.12);
  transition:transform .22s ease,background .22s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);background:rgba(34,211,238,.24);}
.faq-body{padding:0 22px 20px;font-size:.92rem;color:var(--muted);line-height:1.82;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-xl);
  padding:56px 30px;text-align:center;color:#fff;
  background:linear-gradient(135deg,#0b1f3d 0%,#123056 55%,#1a4a7d 100%);
  box-shadow:var(--shadow-lg);
}
.cta-band::before{
  content:"";position:absolute;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.34),transparent 70%);
  top:-180px;right:-120px;
}
.cta-band h2{position:relative;font-size:clamp(1.3rem,2.6vw,1.7rem);font-weight:800;margin-bottom:14px;}
.cta-band p{position:relative;max-width:660px;margin:0 auto;color:rgba(255,255,255,.76);font-size:.95rem;line-height:1.85;}
.cta-band .hero-actions{position:relative;margin-top:28px;}

/* ---------- Footer ---------- */
.site-footer{background:#05101f;color:rgba(255,255,255,.72);padding:56px 0 0;border-top:1px solid rgba(255,255,255,.08);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;padding-bottom:38px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.02rem;margin-bottom:14px;}
.footer-desc{font-size:.88rem;line-height:1.8;color:rgba(255,255,255,.6);max-width:360px;}
.footer-col h4{font-size:.92rem;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col a,.footer-col span{display:block;font-size:.87rem;color:rgba(255,255,255,.6);padding:6px 0;transition:color .2s ease;}
.footer-col a:hover{color:var(--cyan-soft);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:.8rem;color:rgba(255,255,255,.42);
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .kpi-grid{grid-template-columns:repeat(2,1fr);}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .channel-grid{grid-template-columns:repeat(2,1fr);}
  .guard-strip{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:1fr;}
  .step-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .main-nav{
    position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;
    background:#0b1f3d;padding:14px 20px 18px;
    border-bottom:1px solid rgba(255,255,255,.1);
    box-shadow:0 24px 44px rgba(2,10,22,.5);
    display:none;
  }
  .main-nav.open{display:flex;}
  .nav-link{padding:12px 14px;}
  .nav-link.active::after{left:14px;right:auto;width:22px;}
  .nav-toggle{display:flex;}
  .stage-chips{display:none;}
  .header-cta{display:none;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .hero{padding:64px 0 56px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:16px;}
  .grid-3,.grid-2,.grid-4,.channel-grid,.guard-strip{grid-template-columns:1fr;}
  .myth{grid-template-columns:1fr;}
  .myth-wrong{border-right:none;border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero h1{font-size:1.72rem;}
  .hero-lead{font-size:.94rem;}
  .hero-actions .btn{width:100%;}
  .kpi-grid{grid-template-columns:1fr;}
  .hero-stats{grid-template-columns:1fr 1fr;padding:14px;}
  .hero-stat b{font-size:1.2rem;}
  .compare-row > div{padding:14px 16px;font-size:.86rem;}
  .card{padding:22px 18px;}
  .cta-band{padding:40px 20px;}
}

/* roulang page: category1 */
:root{
--deep:#07152b;
--ink:#0b1f3d;
--ink-2:#123056;
--cyan:#22d3ee;
--cyan-soft:#7ee7f7;
--cyan-deep:#0e8fa8;
--gold:#f6c453;
--bg:#f4f8fc;
--bg-alt:#eaf2fa;
--surface:#ffffff;
--text:#0f2038;
--muted:#5a6b83;
--line:#e1eaf4;
--radius-xl:22px;
--radius-lg:18px;
--radius-md:14px;
--radius-sm:10px;
--shadow-sm:0 2px 10px rgba(11,31,61,.06);
--shadow-md:0 16px 36px rgba(11,31,61,.10);
--shadow-lg:0 28px 64px rgba(11,31,61,.16);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
margin:0;
font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
background:var(--bg);
color:var(--text);
font-size:16px;
line-height:1.78;
-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--cyan-deep);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

/* ---------- Header ---------- */
.site-header{
position:sticky;top:0;z-index:80;
background:rgba(7,21,43,.94);
backdrop-filter:blur(16px);
border-bottom:1px solid rgba(255,255,255,.08);
transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 12px 34px rgba(3,12,26,.46);}
.header-inner{height:64px;display:flex;align-items:center;gap:16px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.02rem;letter-spacing:.01em;white-space:nowrap;}
.brand-mark{
width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
background:linear-gradient(135deg,#22d3ee,#3b82f6);color:#04182e;
font-weight:800;font-size:.96rem;box-shadow:0 8px 18px rgba(34,211,238,.34);
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{position:relative;padding:8px 14px;border-radius:9px;color:rgba(255,255,255,.72);font-size:.94rem;transition:color .2s,background .2s;white-space:nowrap;}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08);}
.nav-link.active{color:var(--cyan-soft);background:rgba(34,211,238,.13);}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;background:linear-gradient(90deg,#22d3ee,#67e8f9);}
.stage-chips{display:flex;gap:6px;margin-left:6px;}
.stage-chip{
display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
font-size:.75rem;border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.72);
}
.stage-chip i{width:6px;height:6px;border-radius:50%;background:currentColor;display:block;}
.stage-chip.on{color:var(--cyan-soft);border-color:rgba(34,211,238,.5);background:rgba(34,211,238,.12);}
.stage-chip.warm{color:var(--gold);border-color:rgba(246,196,83,.42);}
.stage-chip.cool{color:rgba(255,255,255,.58);}
.header-cta{
padding:9px 18px;border-radius:10px;font-weight:700;font-size:.9rem;
background:linear-gradient(135deg,#22d3ee,#38bdf8);color:#04182e;
transition:transform .2s,box-shadow .2s;white-space:nowrap;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(34,211,238,.4);}
.nav-toggle{
display:none;margin-left:auto;width:40px;height:40px;border-radius:10px;
background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
color:#fff;align-items:center;justify-content:center;
}

/* ---------- Buttons ---------- */
.btn{
display:inline-flex;align-items:center;justify-content:center;gap:8px;
padding:13px 26px;border-radius:11px;font-weight:700;font-size:.95rem;
border:1px solid transparent;
transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:linear-gradient(135deg,#22d3ee,#38bdf8);color:#04182e;box-shadow:0 12px 30px rgba(34,211,238,.3);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(34,211,238,.4);}
.btn-ghost{background:rgba(255,255,255,.09);color:#fff;border-color:rgba(255,255,255,.34);}
.btn-ghost:hover{background:rgba(255,255,255,.17);transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm);}
.btn-outline:hover{border-color:#b7d6ee;color:var(--cyan-deep);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn:active{transform:translateY(0) scale(.99);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--deep);color:#fff;padding:76px 0 82px;}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.22;}
.hero-veil{
position:absolute;inset:0;
background:
radial-gradient(920px 480px at 12% 0%,rgba(34,211,238,.30),transparent 62%),
radial-gradient(760px 420px at 88% 14%,rgba(59,130,246,.24),transparent 62%),
linear-gradient(180deg,rgba(7,21,43,.86) 0%,rgba(7,21,43,.96) 100%);
}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none;}
.hero-glow.g1{width:420px;height:420px;background:#22d3ee;top:-160px;left:-120px;opacity:.45;}
.hero-glow.g2{width:340px;height:340px;background:#3b82f6;bottom:-180px;right:-80px;opacity:.38;}
.hero-glow.g3{width:240px;height:240px;background:#f6c453;top:38%;right:30%;opacity:.12;}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:46px;align-items:center;}
.hero-eyebrow{
display:inline-flex;align-items:center;gap:8px;padding:6px 15px;border-radius:999px;
background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.38);
color:var(--cyan-soft);font-size:.8rem;letter-spacing:.06em;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--cyan-soft);display:block;}
.hero h1{
font-size:clamp(1.75rem,3.5vw,2.5rem);line-height:1.34;font-weight:800;letter-spacing:-.01em;
margin:20px 0 18px;text-shadow:0 8px 30px rgba(0,0,0,.35);
}
.hero-lead{margin:0;color:rgba(255,255,255,.82);font-size:1rem;line-height:1.86;max-width:620px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0 0;}
.hero-point{
display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;
background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
font-size:.85rem;color:rgba(255,255,255,.9);
}
.hero-point span{width:5px;height:5px;border-radius:50%;background:var(--gold);display:block;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-panel{
background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
border-radius:var(--radius-xl);padding:24px;backdrop-filter:blur(10px);
box-shadow:0 24px 58px rgba(3,12,26,.4);
}
.panel-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:0 0 16px;font-size:1rem;font-weight:700;color:#fff;}
.panel-title small{font-weight:500;font-size:.76rem;color:rgba(255,255,255,.55);letter-spacing:.04em;}
.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;}
.quick-card{
display:block;padding:14px 14px 15px;border-radius:var(--radius-md);
background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.quick-card:hover{transform:translateY(-3px);background:rgba(34,211,238,.14);border-color:rgba(34,211,238,.5);box-shadow:0 14px 30px rgba(3,12,26,.36);}
.quick-card .qc-ico{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:rgba(34,211,238,.18);color:var(--cyan-soft);margin-bottom:9px;}
.quick-card h3{margin:0 0 4px;font-size:.92rem;font-weight:700;color:#fff;}
.quick-card p{margin:0;font-size:.76rem;line-height:1.6;color:rgba(255,255,255,.62);}
.panel-foot{
margin-top:16px;padding-top:14px;border-top:1px solid rgba(255,255,255,.12);
display:flex;align-items:center;justify-content:space-between;gap:10px;
font-size:.8rem;color:rgba(255,255,255,.62);
}
.panel-foot strong{color:var(--gold);font-size:1rem;letter-spacing:.02em;}

/* ---------- Sections ---------- */
.section{padding:clamp(54px,6.4vw,86px) 0;position:relative;}
.section.is-alt{background:var(--bg-alt);}
.section.is-white{background:var(--surface);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-tag{
display:inline-flex;align-items:center;gap:8px;font-size:.79rem;letter-spacing:.1em;
color:var(--cyan-deep);font-weight:700;text-transform:uppercase;
}
.section-tag::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,#22d3ee,#3b82f6);display:block;}
.section-head h2{
font-size:clamp(1.3rem,2.3vw,1.72rem);line-height:1.42;font-weight:800;color:var(--ink);
margin:12px 0 12px;letter-spacing:-.005em;
}
.section-head p{margin:0;color:var(--muted);font-size:.95rem;line-height:1.82;}
.strong{color:var(--cyan-deep);font-weight:700;}

/* ---------- Stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.stat-card{
background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
padding:22px 20px;box-shadow:var(--shadow-sm);
transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c6e2f4;}
.stat-label{display:block;font-size:.8rem;color:var(--muted);letter-spacing:.04em;margin-bottom:8px;}
.stat-num{display:flex;align-items:baseline;gap:4px;font-size:1.9rem;font-weight:800;color:var(--ink);line-height:1.2;}
.stat-num span{font-size:.82rem;font-weight:600;color:var(--muted);}
.stat-card p{margin:10px 0 0;font-size:.85rem;line-height:1.72;color:var(--muted);}

/* ---------- Matrix cards ---------- */
.matrix-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.m-card{
background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
padding:24px 22px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.m-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c6e2f4;}
.m-ico{
width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
background:linear-gradient(135deg,rgba(34,211,238,.16),rgba(59,130,246,.16));
color:var(--cyan-deep);margin-bottom:14px;
}
.m-card h3{margin:0 0 8px;font-size:1.04rem;font-weight:700;color:var(--ink);line-height:1.5;}
.m-card p{margin:0 0 14px;font-size:.89rem;line-height:1.76;color:var(--muted);flex:1;}
.tag-row{display:flex;flex-wrap:wrap;gap:6px;}
.tag{
display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
font-size:.75rem;color:var(--cyan-deep);background:rgba(34,211,238,.1);
border:1px solid rgba(34,211,238,.26);font-weight:600;
}
.tag.gold{color:#a1741a;background:rgba(246,196,83,.16);border-color:rgba(246,196,83,.4);}

/* ---------- Compare ---------- */
.table-wrap{
background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
box-shadow:var(--shadow-sm);overflow-x:auto;
}
table.compare{width:100%;border-collapse:collapse;min-width:640px;}
table.compare th,table.compare td{padding:16px 20px;text-align:left;font-size:.9rem;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7;}
table.compare thead th{
background:linear-gradient(135deg,rgba(34,211,238,.1),rgba(59,130,246,.08));
color:var(--ink);font-weight:700;font-size:.88rem;letter-spacing:.02em;white-space:nowrap;
}
table.compare tbody tr:last-child td{border-bottom:none;}
table.compare tbody tr:hover{background:rgba(234,242,250,.6);}
table.compare td:first-child{font-weight:700;color:var(--ink-2);white-space:nowrap;}
.cell-bad{color:#a3595b;}
.cell-good{color:#0d7a68;font-weight:600;}

/* ---------- Timeline ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.tl-item{
position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
padding:22px 20px 20px;box-shadow:var(--shadow-sm);
transition:transform .2s ease,box-shadow .2s ease;
}
.tl-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.tl-step{
display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:11px;
background:linear-gradient(135deg,#22d3ee,#38bdf8);color:#04182e;font-weight:800;font-size:.9rem;margin-bottom:12px;
}
.tl-item h3{margin:0 0 8px;font-size:1rem;color:var(--ink);font-weight:700;}
.tl-item p{margin:0;font-size:.86rem;line-height:1.74;color:var(--muted);}

/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.news-card{
background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
padding:22px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c6e2f4;}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:10px;flex-wrap:wrap;}
.news-cat{
font-size:.74rem;font-weight:700;color:var(--cyan-deep);
background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.26);
padding:2px 10px;border-radius:999px;
}
.news-date{font-size:.76rem;color:var(--muted);}
.news-card h3{margin:0 0 9px;font-size:1rem;line-height:1.55;font-weight:700;color:var(--ink);}
.news-card h3 a:hover{color:var(--cyan-deep);}
.news-card p{margin:0 0 14px;font-size:.87rem;line-height:1.74;color:var(--muted);flex:1;
display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-more{font-size:.86rem;font-weight:700;color:var(--cyan-deep);display:inline-flex;align-items:center;gap:6px;}
.news-more span{transition:transform .2s ease;}
.news-more:hover span{transform:translateX(4px);}
.news-empty{
grid-column:1/-1;text-align:center;padding:36px 20px;border-radius:var(--radius-lg);
background:var(--surface);border:1px dashed #c6d9ec;color:var(--muted);font-size:.9rem;
}

/* ---------- Support ---------- */
.support-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.sup-item{
background:rgba(255,255,255,.72);border:1px solid rgba(11,31,61,.08);border-radius:var(--radius-md);
padding:20px;transition:transform .2s ease,box-shadow .2s ease;
}
.sup-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.sup-item h3{margin:0 0 8px;font-size:.96rem;color:var(--ink);font-weight:700;display:flex;align-items:center;gap:8px;}
.sup-item h3 i{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#22d3ee,#3b82f6);display:block;}
.sup-item p{margin:0;font-size:.85rem;line-height:1.72;color:var(--muted);}

/* ---------- Quick answers ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.qa-card{
background:var(--surface);border-left:3px solid var(--cyan);border-radius:var(--radius-md);
padding:20px 22px;box-shadow:var(--shadow-sm);
transition:box-shadow .2s ease,transform .2s ease;
}
.qa-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.qa-card h3{margin:0 0 8px;font-size:.98rem;color:var(--ink);font-weight:700;}
.qa-card p{margin:0;font-size:.88rem;line-height:1.76;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
overflow:hidden;box-shadow:var(--shadow-sm);transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#c6e2f4;}
.faq-q{
width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
padding:17px 20px;background:none;border:none;text-align:left;
font-size:.96rem;font-weight:700;color:var(--ink);line-height:1.6;
}
.faq-q .fx{
flex:0 0 auto;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;
background:rgba(34,211,238,.12);color:var(--cyan-deep);transition:transform .25s ease,background .2s ease;
}
.faq-item.open .faq-q .fx{transform:rotate(45deg);background:rgba(34,211,238,.24);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{margin:0;padding:0 20px 18px;font-size:.9rem;line-height:1.8;color:var(--muted);}

/* ---------- Join form ---------- */
.join-wrap{
position:relative;overflow:hidden;border-radius:var(--radius-xl);
background:linear-gradient(135deg,#07152b 0%,#0d2a4d 62%,#123056 100%);
color:#fff;padding:clamp(30px,4vw,52px);
box-shadow:var(--shadow-lg);
}
.join-wrap::before{
content:"";position:absolute;width:340px;height:340px;border-radius:50%;
background:#22d3ee;filter:blur(120px);opacity:.24;top:-140px;right:-100px;
}
.join-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:start;}
.join-copy h2{margin:0 0 12px;font-size:clamp(1.28rem,2.2vw,1.62rem);font-weight:800;line-height:1.45;}
.join-copy p{margin:0;font-size:.94rem;line-height:1.84;color:rgba(255,255,255,.78);}
.join-list{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:10px;}
.join-list li{display:flex;align-items:flex-start;gap:10px;font-size:.88rem;color:rgba(255,255,255,.82);line-height:1.7;}
.join-list li::before{
content:"";flex:0 0 auto;width:16px;height:16px;margin-top:5px;border-radius:50%;
background:rgba(34,211,238,.22);border:1px solid rgba(34,211,238,.6);
}
.form-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius-lg);padding:24px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:.82rem;color:rgba(255,255,255,.75);margin-bottom:6px;font-weight:600;}
.field input,.field select,.field textarea{
width:100%;padding:11px 13px;border-radius:10px;font-size:.9rem;
background:rgba(255,255,255,.94);border:1px solid rgba(255,255,255,.3);color:var(--ink);
transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{resize:vertical;min-height:86px;}
.field input:focus,.field select:focus,.field textarea:focus{
outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(34,211,238,.28);
}
.form-note{font-size:.76rem;color:rgba(255,255,255,.55);margin:10px 0 0;line-height:1.65;}
.form-msg{margin:12px 0 0;font-size:.84rem;color:var(--cyan-soft);min-height:20px;}

/* ---------- Footer ---------- */
.site-footer{background:#061224;color:rgba(255,255,255,.72);padding:54px 0 26px;border-top:1px solid rgba(255,255,255,.08);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.1);}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1rem;margin-bottom:12px;}
.footer-desc{margin:0;font-size:.87rem;line-height:1.8;color:rgba(255,255,255,.6);max-width:420px;}
.footer-col h4{margin:0 0 14px;font-size:.9rem;color:#fff;font-weight:700;letter-spacing:.03em;}
.footer-col a,.footer-col span{display:block;font-size:.86rem;color:rgba(255,255,255,.62);padding:5px 0;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:var(--cyan-soft);transform:translateX(3px);}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:20px;font-size:.8rem;color:rgba(255,255,255,.5);}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
.stage-chips{display:none;}
}
@media (max-width:980px){
.nav-toggle{display:inline-flex;}
.header-cta{display:none;}
.main-nav{
position:absolute;top:64px;left:0;right:0;width:100%;
flex-direction:column;align-items:stretch;gap:4px;margin:0;padding:12px;
background:rgba(7,21,43,.98);border-bottom:1px solid rgba(255,255,255,.1);
box-shadow:0 18px 34px rgba(3,12,26,.5);display:none;
}
.main-nav.open{display:flex;}
.nav-link{padding:11px 14px;}
.nav-link.active::after{display:none;}
.hero-grid{grid-template-columns:1fr;gap:34px;}
.hero{padding:58px 0 62px;}
.stat-grid{grid-template-columns:repeat(2,1fr);}
.matrix-grid{grid-template-columns:repeat(2,1fr);}
.timeline{grid-template-columns:repeat(2,1fr);}
.news-grid{grid-template-columns:repeat(2,1fr);}
.support-grid{grid-template-columns:repeat(2,1fr);}
.qa-grid{grid-template-columns:1fr;}
.join-grid{grid-template-columns:1fr;gap:26px;}
.footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:640px){
.brand span:last-child{font-size:.94rem;}
.hero h1{font-size:1.66rem;}
.hero-lead{font-size:.94rem;}
.hero-actions .btn{flex:1 1 auto;}
.quick-grid{grid-template-columns:1fr;}
.stat-grid{grid-template-columns:1fr;}
.matrix-grid{grid-template-columns:1fr;}
.timeline{grid-template-columns:1fr;}
.news-grid{grid-template-columns:1fr;}
.support-grid{grid-template-columns:1fr;}
.footer-grid{grid-template-columns:1fr;}
.section-head{margin-bottom:26px;}
.footer-bottom{flex-direction:column;}
}
@media (max-width:420px){
.container{padding:0 16px;}
.header-cta{padding:8px 14px;font-size:.84rem;}
}

/* roulang page: article */
:root{
 --deep:#07152b;
 --ink:#0b1f3d;
 --ink-2:#123056;
 --cyan:#22d3ee;
 --cyan-soft:#7ee7f7;
 --cyan-deep:#0e8fa8;
 --gold:#f6c453;
 --bg:#f4f8fc;
 --bg-alt:#eaf2fa;
 --surface:#ffffff;
 --text:#0f2038;
 --muted:#5a6b83;
 --line:#e1eaf4;
 --radius-xl:22px;
 --radius-lg:18px;
 --radius-md:14px;
 --radius-sm:10px;
 --shadow-sm:0 2px 10px rgba(11,31,61,.06);
 --shadow-md:0 16px 36px rgba(11,31,61,.10);
 --shadow-lg:0 28px 64px rgba(11,31,61,.16);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
 background:var(--bg);color:var(--text);font-size:16px;line-height:1.78;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;}
:focus-visible{outline:3px solid rgba(14,143,168,.55);outline-offset:3px;border-radius:8px;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

/* ---------- Header ---------- */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(7,21,43,.94);
 backdrop-filter:blur(16px);
 border-bottom:1px solid rgba(255,255,255,.08);
 transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 12px 34px rgba(3,12,26,.46);}
.header-inner{height:64px;display:flex;align-items:center;gap:16px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.02rem;letter-spacing:.01em;white-space:nowrap;}
.brand-mark{
 width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
 background:linear-gradient(135deg,#22d3ee,#3b82f6);color:#04182e;
 font-weight:800;font-size:.96rem;box-shadow:0 8px 18px rgba(34,211,238,.34);
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{position:relative;padding:8px 14px;border-radius:9px;color:rgba(255,255,255,.72);font-size:.94rem;transition:color .2s,background .2s;white-space:nowrap;}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08);}
.nav-link.active{color:var(--cyan-soft);background:rgba(34,211,238,.13);}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;background:linear-gradient(90deg,#22d3ee,#67e8f9);}
.stage-chips{display:flex;gap:6px;margin-left:6px;}
.stage-chip{
 display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
 font-size:.75rem;border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.72);
}
.stage-chip i{width:6px;height:6px;border-radius:50%;background:currentColor;display:block;}
.stage-chip.on{color:var(--cyan-soft);border-color:rgba(34,211,238,.5);background:rgba(34,211,238,.12);}
.stage-chip.warm{color:var(--gold);border-color:rgba(246,196,83,.42);}
.stage-chip.cool{color:rgba(255,255,255,.58);}
.header-cta{
 padding:9px 18px;border-radius:10px;font-weight:700;font-size:.9rem;
 background:linear-gradient(135deg,#22d3ee,#38bdf8);color:#04182e;
 transition:transform .2s,box-shadow .2s;white-space:nowrap;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(34,211,238,.4);}
.nav-toggle{
 display:none;margin-left:auto;width:40px;height:40px;border-radius:10px;
 background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
 color:#fff;cursor:pointer;align-items:center;justify-content:center;
}

/* ---------- Buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:13px 28px;border-radius:11px;font-weight:700;font-size:.95rem;
 border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-sm{padding:10px 20px;font-size:.88rem;border-radius:10px;}
.btn-primary{background:linear-gradient(135deg,#22d3ee,#38bdf8);color:#04182e;box-shadow:0 12px 30px rgba(34,211,238,.3);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(34,211,238,.42);}
.btn-ghost{background:rgba(255,255,255,.09);color:#fff;border-color:rgba(255,255,255,.34);}
.btn-ghost:hover{background:rgba(255,255,255,.17);transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm);}
.btn-outline:hover{border-color:#b7d6ee;color:var(--cyan-deep);transform:translateY(-2px);box-shadow:var(--shadow-md);}

/* ---------- Article hero ---------- */
.article-hero{position:relative;overflow:hidden;background:var(--deep);color:#fff;padding:54px 0 62px;}
.art-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.2;}
.art-veil{
 position:absolute;inset:0;
 background:
 radial-gradient(880px 420px at 14% 0%,rgba(34,211,238,.30),transparent 60%),
 radial-gradient(720px 380px at 88% 12%,rgba(59,130,246,.24),transparent 62%),
 linear-gradient(180deg,rgba(7,21,43,.90) 0%,rgba(7,21,43,.97) 100%);
}
.article-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.85rem;color:rgba(255,255,255,.6);margin-bottom:18px;}
.crumbs a{color:var(--cyan-soft);transition:color .2s;}
.crumbs a:hover{color:#fff;}
.crumb-sep{opacity:.45;}
.article-hero h1{
 font-size:clamp(1.55rem,3.5vw,2.35rem);line-height:1.36;font-weight:800;
 margin:0 0 18px;max-width:920px;letter-spacing:-.01em;text-shadow:0 8px 30px rgba(0,0,0,.35);
}
.article-lead{max-width:760px;color:rgba(255,255,255,.8);font-size:.98rem;line-height:1.85;margin:0 0 24px;}
.meta-row{display:flex;flex-wrap:wrap;gap:10px;}
.meta-chip{
 display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
 font-size:.8rem;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.82);
}
.meta-chip strong{color:var(--cyan-soft);font-weight:700;}

/* ---------- Article layout ---------- */
.article-main{padding:56px 0 76px;}
.article-layout{display:grid;grid-template-columns:minmax(0,720px) 300px;gap:48px;align-items:start;}
.article-shell{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-xl);
 box-shadow:var(--shadow-sm);padding:34px 38px;
}
.article-cover{border-radius:var(--radius-lg);overflow:hidden;margin:0 0 28px;border:1px solid var(--line);}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.article-content{font-size:16px;line-height:1.85;color:var(--text);overflow-wrap:break-word;}
.article-content h2{
 font-size:1.32rem;font-weight:800;color:var(--ink);margin:36px 0 14px;padding-left:13px;position:relative;line-height:1.5;
}
.article-content h2::before{
 content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:4px;
 background:linear-gradient(180deg,#22d3ee,#3b82f6);
}
.article-content h3{font-size:1.08rem;font-weight:800;color:var(--ink-2);margin:26px 0 10px;}
.article-content p{margin:0 0 18px;}
.article-content strong{color:var(--ink);font-weight:700;}
.article-content ul,.article-content ol{margin:0 0 20px;padding-left:1.3rem;}
.article-content li{margin-bottom:8px;}
.article-content img{border-radius:var(--radius-md);margin:22px 0;width:100%;height:auto;}
.article-content a{color:var(--cyan-deep);border-bottom:1px solid rgba(14,143,168,.32);transition:border-color .2s,color .2s;}
.article-content a:hover{color:var(--ink);border-color:var(--ink);}
.article-content blockquote{
 margin:24px 0;padding:16px 20px;border-left:4px solid var(--cyan);
 background:var(--bg-alt);border-radius:0 var(--radius-md) var(--radius-md) 0;
 color:var(--ink-2);font-size:.96rem;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content table{width:100%;border-collapse:collapse;margin:22px 0;font-size:.92rem;}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-content th{background:var(--bg-alt);color:var(--ink);font-weight:700;}
.article-content hr{border:0;border-top:1px solid var(--line);margin:30px 0;}
.empty-state{
 padding:56px 24px;text-align:center;border:1px dashed #c9dced;border-radius:var(--radius-lg);background:var(--bg-alt);
}
.empty-state h2{margin:0 0 10px;font-size:1.25rem;font-weight:800;color:var(--ink);}
.empty-state p{margin:0 0 22px;color:var(--muted);font-size:.94rem;}

/* ---------- Sidebar ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:88px;}
.side-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:22px;box-shadow:var(--shadow-sm);
}
.side-title{font-size:1rem;font-weight:800;margin:0 0 14px;padding-left:12px;position:relative;color:var(--ink);}
.side-title::before{
 content:"";position:absolute;left:0;top:5px;bottom:5px;width:3px;border-radius:3px;
 background:linear-gradient(180deg,#22d3ee,#3b82f6);
}
.side-points{display:flex;flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;}
.side-points li{font-size:.88rem;color:var(--muted);padding-left:16px;position:relative;line-height:1.7;}
.side-points li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--cyan);}
.side-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
.side-list a{
 display:flex;gap:9px;padding:9px 10px;border-radius:10px;font-size:.89rem;
 color:var(--muted);line-height:1.6;transition:background .2s,color .2s;
}
.side-list a:hover{background:var(--bg-alt);color:var(--ink);}
.side-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan-deep);flex:none;margin-top:10px;}
.side-cta{background:linear-gradient(150deg,#0b1f3d,#123056);border-color:rgba(255,255,255,.08);color:#fff;}
.side-cta .side-title{color:#fff;}
.side-cta .side-title::before{background:linear-gradient(180deg,#22d3ee,#f6c453);}
.side-cta p{margin:0 0 16px;font-size:.88rem;color:rgba(255,255,255,.72);line-height:1.7;}

/* ---------- Sections ---------- */
.section{padding:68px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:34px;}
.section-kicker{
 display:inline-flex;align-items:center;gap:8px;font-size:.78rem;letter-spacing:.14em;
 color:var(--cyan-deep);font-weight:800;text-transform:uppercase;
}
.section-kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--cyan-deep);}
.section-title{font-size:clamp(1.28rem,2.4vw,1.72rem);font-weight:800;margin:10px 0 0;color:var(--ink);line-height:1.4;}
.section-desc{max-width:600px;color:var(--muted);font-size:.94rem;margin:10px 0 0;}

/* ---------- Stat board ---------- */
.stat-board{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.stat-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:24px 22px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c7e3f4;}
.stat-value{font-size:1.7rem;font-weight:800;color:var(--ink);line-height:1.2;}
.stat-value em{font-style:normal;font-size:.86rem;color:var(--cyan-deep);margin-left:4px;font-weight:700;}
.stat-label{font-size:.9rem;font-weight:700;margin:10px 0 4px;color:var(--ink-2);}
.stat-text{font-size:.84rem;color:var(--muted);margin:0;line-height:1.7;}

/* ---------- Channel matrix ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.channel-card{
 position:relative;display:block;padding:28px 24px;border-radius:var(--radius-lg);
 background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe0f2;}
.channel-num{font-size:.76rem;font-weight:800;letter-spacing:.16em;color:var(--cyan-deep);}
.channel-card h3{margin:10px 0 8px;font-size:1.1rem;color:var(--ink);font-weight:800;}
.channel-card p{margin:0 0 16px;font-size:.9rem;color:var(--muted);line-height:1.72;}
.channel-tags{display:flex;flex-wrap:wrap;gap:6px;}
.tag{
 display:inline-block;padding:3px 10px;border-radius:999px;
 background:var(--bg-alt);color:var(--cyan-deep);font-size:.75rem;font-weight:600;
}

/* ---------- Timeline ---------- */
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.tl-item{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:26px 24px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tl-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe0f2;}
.tl-step{
 display:inline-flex;width:36px;height:36px;border-radius:12px;align-items:center;justify-content:center;
 background:linear-gradient(135deg,#22d3ee,#3b82f6);color:#04182e;font-weight:800;font-size:.92rem;margin-bottom:16px;
}
.tl-item h3{margin:0 0 8px;font-size:1.05rem;font-weight:800;color:var(--ink);}
.tl-item p{margin:0;font-size:.9rem;color:var(--muted);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px;}
.faq-item{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
 box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:#c7e3f4;box-shadow:var(--shadow-md);}
.faq-item summary{
 list-style:none;cursor:pointer;padding:18px 22px;font-weight:700;color:var(--ink);
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 transition:background .2s;font-size:.98rem;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--bg-alt);}
.faq-item summary::after{content:"+";font-size:1.25rem;font-weight:700;color:var(--cyan-deep);line-height:1;}
.faq-item[open] summary::after{content:"–";}
.faq-item p{margin:0;padding:0 22px 20px;color:var(--muted);font-size:.93rem;line-height:1.8;}

/* ---------- CTA band ---------- */
.cta-band{
 background:linear-gradient(135deg,#0b1f3d 0%,#123056 58%,#0e8fa8 100%);
 border-radius:var(--radius-xl);padding:46px 44px;color:#fff;
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
 box-shadow:var(--shadow-lg);
}
.cta-band h2{margin:0 0 10px;font-size:clamp(1.24rem,2.4vw,1.6rem);font-weight:800;line-height:1.4;}
.cta-band p{margin:0;max-width:560px;color:rgba(255,255,255,.74);font-size:.94rem;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:56px 0 24px;border-top:1px solid rgba(255,255,255,.07);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1rem;margin-bottom:14px;}
.footer-desc{margin:0;font-size:.9rem;line-height:1.8;color:rgba(255,255,255,.6);max-width:420px;}
.footer-col h4{margin:0 0 14px;font-size:.92rem;color:#fff;font-weight:700;letter-spacing:.02em;}
.footer-col a,.footer-col span{display:block;font-size:.88rem;color:rgba(255,255,255,.6);padding:5px 0;transition:color .2s,transform .2s;}
.footer-col a:hover{color:var(--cyan-soft);transform:translateX(3px);}
.footer-bottom{
 margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.09);
 display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
 font-size:.82rem;color:rgba(255,255,255,.45);
}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
 .stage-chips{display:none;}
 .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px;}
}
@media (max-width:980px){
 .article-layout{grid-template-columns:1fr;gap:30px;}
 .article-side{position:static;}
 .stat-board{grid-template-columns:repeat(2,1fr);}
 .channel-grid,.timeline{grid-template-columns:repeat(2,1fr);}
 .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
 .nav-toggle{display:flex;}
 .main-nav{
  position:absolute;top:64px;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:2px;margin-left:0;
  background:rgba(7,21,43,.98);border-bottom:1px solid rgba(255,255,255,.1);
  padding:12px 20px 18px;display:none;box-shadow:0 22px 44px rgba(3,12,26,.55);
 }
 .main-nav.open{display:flex;}
 .nav-link{padding:12px 14px;border-radius:10px;font-size:.96rem;}
 .nav-link.active::after{display:none;}
 .header-cta{margin-left:0;padding:8px 14px;font-size:.84rem;}
}
@media (max-width:768px){
 .section{padding:48px 0;}
 .article-shell{padding:24px 20px;}
 .stat-board,.channel-grid,.timeline{grid-template-columns:1fr;}
 .cta-band{padding:30px 24px;}
 .footer-grid{grid-template-columns:1fr;gap:26px;}
 .article-hero{padding:38px 0 46px;}
}
@media (max-width:520px){
 .brand > span:last-child{font-size:.9rem;}
 .header-inner{gap:10px;}
 .article-shell{padding:20px 16px;}
 .stat-value{font-size:1.5rem;}
 .btn{padding:12px 22px;font-size:.92rem;}
 .cta-actions .btn{width:100%;}
 .footer-bottom{flex-direction:column;}
}

/* roulang page: category3 */
:root{
  --deep:#07152b;
  --ink:#0b1f3d;
  --ink-2:#123056;
  --cyan:#22d3ee;
  --cyan-soft:#7ee7f7;
  --cyan-deep:#0e8fa8;
  --gold:#f6c453;
  --bg:#f4f8fc;
  --bg-alt:#eaf2fa;
  --surface:#ffffff;
  --text:#0f2038;
  --muted:#5a6b83;
  --line:#e1eaf4;
  --radius-xl:22px;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(11,31,61,.06);
  --shadow-md:0 16px 36px rgba(11,31,61,.10);
  --shadow-lg:0 28px 64px rgba(11,31,61,.16);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p{margin:0;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,21,43,.94);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 12px 34px rgba(3,12,26,.46);}
.header-inner{height:64px;display:flex;align-items:center;gap:16px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.02rem;letter-spacing:.01em;white-space:nowrap;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,#22d3ee,#3b82f6);color:#04182e;
  font-weight:800;font-size:.96rem;box-shadow:0 8px 18px rgba(34,211,238,.34);
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{position:relative;padding:8px 14px;border-radius:9px;color:rgba(255,255,255,.72);font-size:.94rem;transition:color .2s,background .2s;white-space:nowrap;}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08);}
.nav-link:focus-visible{outline:2px solid var(--cyan-soft);outline-offset:2px;}
.nav-link.active{color:var(--cyan-soft);background:rgba(34,211,238,.13);}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;background:linear-gradient(90deg,#22d3ee,#67e8f9);}
.stage-chips{display:flex;gap:6px;margin-left:6px;}
.stage-chip{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
  font-size:.75rem;border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.72);
}
.stage-chip i{width:6px;height:6px;border-radius:50%;background:currentColor;display:block;}
.stage-chip.on{color:var(--cyan-soft);border-color:rgba(34,211,238,.5);background:rgba(34,211,238,.12);}
.stage-chip.warm{color:var(--gold);border-color:rgba(246,196,83,.42);}
.stage-chip.cool{color:rgba(255,255,255,.58);}
.header-cta{
  padding:9px 18px;border-radius:10px;font-weight:700;font-size:.9rem;
  background:linear-gradient(135deg,#22d3ee,#38bdf8);color:#04182e;
  transition:transform .2s,box-shadow .2s;white-space:nowrap;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(34,211,238,.4);}
.header-cta:focus-visible{outline:2px solid #fff;outline-offset:2px;}
.nav-toggle{
  display:none;margin-left:auto;width:40px;height:40px;border-radius:10px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  color:#fff;cursor:pointer;align-items:center;justify-content:center;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(155deg,#07152b 0%,#0c2547 56%,#123056 100%);
  padding:70px 0 96px;
}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.20;}
.hero-veil{
  position:absolute;inset:0;
  background:
    radial-gradient(900px 460px at 12% 0%,rgba(34,211,238,.30),transparent 62%),
    radial-gradient(720px 420px at 88% 10%,rgba(59,130,246,.22),transparent 64%),
    linear-gradient(180deg,rgba(7,21,43,.82) 0%,rgba(7,21,43,.96) 100%);
}
.hero-slash{
  position:absolute;top:0;right:-8%;width:60%;height:100%;
  background:linear-gradient(150deg,rgba(34,211,238,.30),rgba(59,130,246,.16) 55%,transparent 92%);
  clip-path:polygon(24% 0,100% 0,100% 100%,0 100%);
  pointer-events:none;
}
.hero-glow{position:absolute;border-radius:50%;filter:blur(88px);pointer-events:none;}
.hero-glow.g1{width:420px;height:420px;background:#22d3ee;top:-160px;left:-120px;opacity:.45;}
.hero-glow.g2{width:340px;height:340px;background:#3b82f6;bottom:-180px;right:-80px;opacity:.36;}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;
  background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.38);
  color:var(--cyan-soft);font-size:.82rem;letter-spacing:.06em;margin-bottom:20px;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--cyan-soft);display:block;}
.hero h1{
  font-size:clamp(1.62rem,3.4vw,2.42rem);line-height:1.34;font-weight:800;letter-spacing:-.01em;
  margin:0 0 18px;text-shadow:0 8px 30px rgba(0,0,0,.34);
}
.hero-lead{color:rgba(255,255,255,.82);font-size:.98rem;line-height:1.85;max-width:560px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.hero-point{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  font-size:.83rem;color:rgba(255,255,255,.9);
}
.hero-point span{width:5px;height:5px;border-radius:50%;background:var(--gold);display:block;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-panel{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-xl);
  padding:22px;
  backdrop-filter:blur(8px);
  box-shadow:0 24px 60px rgba(3,12,26,.34);
}
.hero-panel h2{font-size:.94rem;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.02em;}
.hero-panel-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 0;border-bottom:1px dashed rgba(255,255,255,.14);font-size:.88rem;
}
.hero-panel-row:last-child{border-bottom:0;padding-bottom:0;}
.hero-panel-row .k{color:rgba(255,255,255,.68);}
.hero-panel-row .v{color:var(--cyan-soft);font-weight:700;letter-spacing:.02em;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:11px;font-weight:700;font-size:.94rem;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn:focus-visible{outline:2px solid var(--cyan-deep);outline-offset:3px;}
.btn-primary{background:linear-gradient(135deg,#22d3ee,#38bdf8);color:#04182e;box-shadow:0 12px 30px rgba(34,211,238,.3);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(34,211,238,.4);}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm);}
.btn-outline:hover{border-color:#b7d6ee;color:var(--cyan-deep);transform:translateY(-2px);box-shadow:var(--shadow-md);}

/* ---------- Sections ---------- */
.section{padding:78px 0;position:relative;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:linear-gradient(160deg,#07152b,#123056);color:#fff;}
.section-head{max-width:760px;margin-bottom:38px;}
.kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:.78rem;letter-spacing:.16em;color:var(--cyan-deep);
  font-weight:800;margin-bottom:12px;
}
.kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,#22d3ee,#3b82f6);}
.section-title{font-size:clamp(1.35rem,2.6vw,1.85rem);font-weight:800;color:var(--ink);line-height:1.4;}
.section-sub{color:var(--muted);font-size:.97rem;margin-top:12px;}
.section-dark .kicker{color:var(--cyan-soft);}
.section-dark .section-title{color:#fff;}
.section-dark .section-sub{color:rgba(255,255,255,.72);}

/* ---------- Metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.metric{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px 20px;box-shadow:var(--shadow-sm);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe3f3;}
.metric .num{
  font-size:1.72rem;font-weight:800;color:var(--ink);letter-spacing:-.02em;
  display:flex;align-items:baseline;gap:4px;
}
.metric .num em{font-style:normal;font-size:.86rem;font-weight:700;color:var(--cyan-deep);}
.metric .lbl{margin-top:8px;font-size:.9rem;font-weight:700;color:var(--text);}
.metric .desc{margin-top:4px;font-size:.82rem;color:var(--muted);line-height:1.7;}

/* ---------- Cards ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);padding:24px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe3f3;}
.card-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(59,130,246,.14));
  color:var(--cyan-deep);margin-bottom:14px;
}
.card-icon svg{width:21px;height:21px;}
.card h3{font-size:1.05rem;font-weight:800;color:var(--ink);margin-bottom:8px;line-height:1.5;}
.card p{font-size:.92rem;color:var(--muted);line-height:1.8;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;
  font-size:.76rem;font-weight:700;letter-spacing:.02em;
  background:rgba(34,211,238,.12);color:var(--cyan-deep);border:1px solid rgba(34,211,238,.26);
}
.tag.gold{background:rgba(246,196,83,.16);color:#9a6b06;border-color:rgba(246,196,83,.42);}
.tag.slate{background:#eef4fb;color:var(--muted);border-color:var(--line);}

/* ---------- Media card ---------- */
.media-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe3f3;}
.media-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#dbe8f4;}
.media-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.media-card:hover .thumb img{transform:scale(1.04);}
.media-card .body{padding:20px 22px 24px;}
.media-card h3{font-size:1.02rem;font-weight:800;color:var(--ink);margin-bottom:8px;line-height:1.55;}
.media-card p{font-size:.9rem;color:var(--muted);line-height:1.8;}

/* ---------- Timeline ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px 20px;box-shadow:var(--shadow-sm);position:relative;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe3f3;}
.step-no{
  display:inline-grid;place-items:center;width:32px;height:32px;border-radius:10px;
  font-weight:800;font-size:.88rem;color:#04182e;
  background:linear-gradient(135deg,#22d3ee,#67e8f9);margin-bottom:14px;
  box-shadow:0 8px 18px rgba(34,211,238,.28);
}
.step h3{font-size:.98rem;font-weight:800;color:var(--ink);margin-bottom:8px;}
.step p{font-size:.87rem;color:var(--muted);line-height:1.78;}

/* ---------- Compare ---------- */
.compare{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.compare-card{
  border-radius:var(--radius-xl);padding:28px 26px;border:1px solid var(--line);
  background:#fff;box-shadow:var(--shadow-sm);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe3f3;}
.compare-card.feature{background:linear-gradient(158deg,#0c2547,#123056);border-color:rgba(34,211,238,.28);color:#fff;}
.compare-card h3{font-size:1.1rem;font-weight:800;margin-bottom:6px;color:var(--ink);}
.compare-card.feature h3{color:#fff;}
.compare-card .lead{font-size:.88rem;color:var(--muted);margin-bottom:18px;}
.compare-card.feature .lead{color:rgba(255,255,255,.72);}
.compare-list{list-style:none;margin:0;padding:0;display:grid;gap:11px;}
.compare-list li{
  display:flex;gap:10px;font-size:.9rem;line-height:1.75;color:var(--muted);
}
.compare-card.feature .compare-list li{color:rgba(255,255,255,.84);}
.compare-list li::before{
  content:"";flex:0 0 auto;width:7px;height:7px;margin-top:9px;border-radius:50%;
  background:linear-gradient(135deg,#22d3ee,#3b82f6);
}
.compare-card.feature .compare-list li::before{background:var(--gold);}

/* ---------- Milestone ---------- */
.milestones{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.milestone{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-lg);padding:24px 22px;
  transition:transform .2s,background .2s,border-color .2s;
}
.milestone:hover{transform:translateY(-4px);background:rgba(255,255,255,.11);border-color:rgba(34,211,238,.4);}
.milestone .chip{
  display:inline-flex;align-items:center;gap:7px;padding:4px 12px;border-radius:999px;
  font-size:.76rem;font-weight:700;margin-bottom:14px;
  background:rgba(34,211,238,.14);border:1px solid rgba(34,211,238,.42);color:var(--cyan-soft);
}
.milestone .chip.warm{background:rgba(246,196,83,.14);border-color:rgba(246,196,83,.44);color:var(--gold);}
.milestone .chip.cool{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.22);color:rgba(255,255,255,.72);}
.milestone h3{font-size:1rem;font-weight:800;color:#fff;margin-bottom:8px;}
.milestone p{font-size:.87rem;color:rgba(255,255,255,.7);line-height:1.8;}

/* ---------- Guarantee ---------- */
.guarantee{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.g-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px 20px;box-shadow:var(--shadow-sm);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.g-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe3f3;}
.g-item .g-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(34,211,238,.14);color:var(--cyan-deep);margin-bottom:12px;
}
.g-item h3{font-size:.96rem;font-weight:800;color:var(--ink);margin-bottom:6px;}
.g-item p{font-size:.86rem;color:var(--muted);line-height:1.78;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);margin-bottom:12px;overflow:hidden;
  transition:border-color .2s,box-shadow .2s;
}
.faq-item[open]{border-color:#bfe3f3;box-shadow:var(--shadow-md);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 22px;
  font-weight:700;font-size:.98rem;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:24px;height:24px;border-radius:8px;
  display:grid;place-items:center;font-weight:800;font-size:1rem;
  background:rgba(34,211,238,.14);color:var(--cyan-deep);transition:transform .2s,background .2s;
}
.faq-item[open] summary::after{content:"−";background:rgba(34,211,238,.24);}
.faq-item .answer{padding:0 22px 20px;font-size:.91rem;color:var(--muted);line-height:1.85;}

/* ---------- CTA / Form ---------- */
.cta-wrap{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;}
.cta-copy .section-title{color:#fff;}
.cta-copy p{color:rgba(255,255,255,.76);font-size:.95rem;line-height:1.85;margin-top:14px;}
.form-card{
  background:#fff;border-radius:var(--radius-xl);padding:28px 26px;
  box-shadow:var(--shadow-lg);border:1px solid var(--line);
}
.form-card h3{font-size:1.06rem;font-weight:800;color:var(--ink);margin-bottom:6px;}
.form-card .hint{font-size:.85rem;color:var(--muted);margin-bottom:18px;line-height:1.7;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:.83rem;font-weight:700;color:var(--ink);margin-bottom:6px;}
.field input,.field select{
  width:100%;padding:11px 14px;border-radius:10px;border:1px solid var(--line);
  background:#f8fbfe;font-size:.92rem;color:var(--text);
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--cyan);background:#fff;
  box-shadow:0 0 0 3px rgba(34,211,238,.18);
}
.field input::placeholder{color:#9aa9bd;}
.form-card .btn{width:100%;margin-top:6px;}
.form-note{margin-top:12px;font-size:.8rem;color:var(--muted);text-align:center;}
.form-feedback{
  margin-top:12px;font-size:.86rem;font-weight:700;color:var(--cyan-deep);
  display:none;text-align:center;
}
.form-feedback.show{display:block;}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:56px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1rem;margin-bottom:14px;}
.footer-desc{font-size:.89rem;line-height:1.85;color:rgba(255,255,255,.6);max-width:360px;}
.footer-col h4{color:#fff;font-size:.95rem;font-weight:800;margin-bottom:14px;letter-spacing:.02em;}
.footer-col a,.footer-col span{
  display:block;font-size:.87rem;color:rgba(255,255,255,.62);
  margin-bottom:9px;transition:color .2s;
}
.footer-col a:hover{color:var(--cyan-soft);}
.footer-col a:focus-visible{outline:2px solid var(--cyan-soft);outline-offset:3px;border-radius:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:18px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:.82rem;color:rgba(255,255,255,.48);
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .stage-chips{display:none;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .hero-panel{max-width:520px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .timeline{grid-template-columns:repeat(2,1fr);}
  .guarantee{grid-template-columns:repeat(2,1fr);}
  .milestones{grid-template-columns:repeat(2,1fr);}
  .cta-wrap{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:860px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:absolute;top:64px;left:0;right:0;
    background:rgba(7,21,43,.98);backdrop-filter:blur(18px);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:12px 20px 18px;display:none;
    border-bottom:1px solid rgba(255,255,255,.1);
    box-shadow:0 18px 40px rgba(3,12,26,.5);
  }
  .main-nav.open{display:flex;}
  .main-nav .nav-link{padding:12px 14px;font-size:.96rem;min-height:44px;display:flex;align-items:center;}
  .nav-link.active::after{left:14px;right:auto;width:22px;bottom:8px;}
  .header-cta{display:none;}
}
@media (max-width:768px){
  .section{padding:58px 0;}
  .hero{padding:52px 0 76px;}
  .grid-2,.compare{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-desc{max-width:none;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .brand span:last-child{font-size:.94rem;}
  .hero h1{font-size:1.55rem;}
  .hero-lead{font-size:.92rem;}
  .metrics,.grid-3,.grid-4,.timeline,.guarantee,.milestones{grid-template-columns:1fr;}
  .card,.metric,.step,.g-item,.milestone{padding:20px 18px;}
  .btn{width:100%;padding:13px 20px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .form-card{padding:22px 18px;}
}

/* roulang page: category2 */
:root{
 --deep:#07152b;
 --ink:#0b1f3d;
 --ink-2:#123056;
 --cyan:#22d3ee;
 --cyan-soft:#7ee7f7;
 --cyan-deep:#0e8fa8;
 --gold:#f6c453;
 --bg:#f4f8fc;
 --bg-alt:#eaf2fa;
 --surface:#ffffff;
 --text:#0f2038;
 --muted:#5a6b83;
 --line:#e1eaf4;
 --radius-xl:22px;
 --radius-lg:18px;
 --radius-md:14px;
 --radius-sm:10px;
 --shadow-sm:0 2px 10px rgba(11,31,61,.06);
 --shadow-md:0 16px 36px rgba(11,31,61,.10);
 --shadow-lg:0 28px 64px rgba(11,31,61,.16);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body.cat-page{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
 background:var(--bg);
 color:var(--text);
 font-size:16px;
 line-height:1.78;
 -webkit-font-smoothing:antialiased;
}
body.cat-page img{max-width:100%;display:block;}
body.cat-page a{color:inherit;text-decoration:none;}
body.cat-page button,
body.cat-page input,
body.cat-page select,
body.cat-page textarea{font-family:inherit;font-size:inherit;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
/* ---------- Header ---------- */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(7,21,43,.94);
 backdrop-filter:blur(16px);
 border-bottom:1px solid rgba(255,255,255,.08);
 transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 12px 34px rgba(3,12,26,.46);}
.header-inner{height:64px;display:flex;align-items:center;gap:16px;position:relative;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.02rem;letter-spacing:.01em;white-space:nowrap;}
.brand-mark{
 width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
 background:linear-gradient(135deg,#22d3ee,#3b82f6);color:#04182e;
 font-weight:800;font-size:.96rem;box-shadow:0 8px 18px rgba(34,211,238,.34);
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{position:relative;padding:8px 14px;border-radius:9px;color:rgba(255,255,255,.72);font-size:.94rem;transition:color .2s,background .2s;white-space:nowrap;}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08);}
.nav-link.active{color:var(--cyan-soft);background:rgba(34,211,238,.13);}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;background:linear-gradient(90deg,#22d3ee,#67e8f9);}
.stage-chips{display:flex;gap:6px;margin-left:6px;}
.stage-chip{
 display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
 font-size:.75rem;border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.72);
}
.stage-chip i{width:6px;height:6px;border-radius:50%;background:currentColor;display:block;}
.stage-chip.on{color:var(--cyan-soft);border-color:rgba(34,211,238,.5);background:rgba(34,211,238,.12);}
.stage-chip.warm{color:var(--gold);border-color:rgba(246,196,83,.42);}
.stage-chip.cool{color:rgba(255,255,255,.58);}
.header-cta{
 padding:9px 18px;border-radius:10px;font-weight:700;font-size:.9rem;
 background:linear-gradient(135deg,#22d3ee,#38bdf8);color:#04182e;
 transition:transform .2s,box-shadow .2s;white-space:nowrap;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(34,211,238,.4);}
.nav-toggle{
 display:none;margin-left:auto;width:40px;height:40px;border-radius:10px;
 background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
 color:#fff;cursor:pointer;align-items:center;justify-content:center;
}
/* ---------- Category Hero ---------- */
.cat-hero{position:relative;overflow:hidden;background:var(--deep);color:#fff;padding:68px 0 72px;}
.cat-hero-bg{
 position:absolute;inset:0;
 background:url('/assets/images/深入探讨_捕鱼大咖_的游戏玩法与策略指南.webp') center/cover no-repeat;
 opacity:.18;
}
.cat-hero-veil{
 position:absolute;inset:0;
 background:
 radial-gradient(860px 460px at 8% 0%,rgba(34,211,238,.30),transparent 64%),
 radial-gradient(680px 400px at 92% 100%,rgba(59,130,246,.28),transparent 66%),
 linear-gradient(180deg,rgba(7,21,43,.84) 0%,rgba(7,21,43,.96) 100%);
}
.cat-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center;}
.kicker{
 display:inline-flex;align-items:center;gap:8px;padding:6px 15px;border-radius:999px;
 background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.38);
 color:var(--cyan-soft);font-size:.8rem;letter-spacing:.05em;margin-bottom:20px;
}
.kicker i{width:6px;height:6px;border-radius:50%;background:var(--cyan-soft);display:block;}
.cat-hero h1{
 font-size:clamp(1.7rem,3.4vw,2.55rem);line-height:1.34;font-weight:800;
 letter-spacing:-.01em;margin:0 0 18px;color:#fff;text-shadow:0 8px 30px rgba(0,0,0,.35);
}
.cat-lead{margin:0;color:rgba(255,255,255,.82);font-size:1rem;line-height:1.85;max-width:620px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
 display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;
 background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
 font-size:.83rem;color:rgba(255,255,255,.9);
}
.tag::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--gold);display:block;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 26px;border-radius:11px;font-weight:700;font-size:.95rem;
 border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn:focus-visible{outline:3px solid rgba(34,211,238,.55);outline-offset:2px;}
.btn-primary{background:linear-gradient(135deg,#22d3ee,#38bdf8);color:#04182e;box-shadow:0 12px 30px rgba(34,211,238,.3);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(34,211,238,.4);}
.btn-ghost{background:rgba(255,255,255,.09);color:#fff;border-color:rgba(255,255,255,.34);}
.btn-ghost:hover{background:rgba(255,255,255,.17);transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm);}
.btn-outline:hover{border-color:#b7d6ee;color:var(--cyan-deep);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-block{width:100%;}
/* Hero figure */
.hero-figure{margin:0;display:flex;flex-direction:column;gap:14px;}
.hero-figure img{
 width:100%;aspect-ratio:16/11;object-fit:cover;
 border-radius:var(--radius-xl);border:1px solid rgba(255,255,255,.18);
 box-shadow:0 26px 60px rgba(3,12,26,.55);
}
.figure-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.fs-item{
 background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
 border-radius:var(--radius-md);padding:12px 16px;
}
.fs-item strong{display:block;font-size:1.35rem;font-weight:800;color:var(--cyan-soft);line-height:1.3;}
.fs-item span{font-size:.8rem;color:rgba(255,255,255,.68);}
/* ---------- Sections ---------- */
.section{padding:66px 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:var(--deep);color:#fff;}
.section-head{max-width:760px;margin:0 auto 36px;text-align:center;}
.section-title{
 font-size:clamp(1.32rem,2.4vw,1.72rem);font-weight:800;color:var(--ink);
 margin:0 0 12px;letter-spacing:-.01em;line-height:1.45;
}
.section-title::after{
 content:"";display:block;width:46px;height:3px;border-radius:3px;
 background:linear-gradient(90deg,#22d3ee,#3b82f6);margin:14px auto 0;
}
.section-sub{margin:0;color:var(--muted);font-size:.96rem;line-height:1.85;}
/* ---------- Grids ---------- */
.grid{display:grid;gap:20px;}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr));}
/* ---------- Cards ---------- */
.card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:24px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe4f2;}
.stat-card{position:relative;overflow:hidden;padding-top:26px;}
.stat-card::before{
 content:"";position:absolute;left:0;top:0;width:100%;height:3px;
 background:linear-gradient(90deg,#22d3ee,#3b82f6);
}
.stat-num{font-size:2rem;font-weight:800;color:var(--ink);line-height:1.2;letter-spacing:-.02em;}
.stat-num em{font-style:normal;font-size:.9rem;font-weight:700;color:var(--cyan-deep);margin-left:4px;}
.stat-label{margin:8px 0 6px;font-size:.98rem;font-weight:700;color:var(--ink-2);}
.stat-desc{margin:0;font-size:.88rem;color:var(--muted);line-height:1.75;}
/* Skill cards */
.skill-card{display:flex;flex-direction:column;gap:12px;}
.skill-icon{
 width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
 background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(59,130,246,.18));
 color:var(--cyan-deep);border:1px solid rgba(34,211,238,.24);
}
.skill-card h3{margin:0;font-size:1.05rem;font-weight:800;color:var(--ink);}
.skill-card p{margin:0;font-size:.9rem;color:var(--muted);line-height:1.78;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px;}
.chip{
 display:inline-flex;align-items:center;padding:3px 11px;border-radius:999px;
 background:rgba(34,211,238,.10);border:1px solid rgba(34,211,238,.24);
 color:var(--cyan-deep);font-size:.76rem;font-weight:600;letter-spacing:.02em;
}
/* Compare */
.compare-layout{display:grid;grid-template-columns:.92fr 1.08fr;gap:26px;align-items:start;}
.compare-figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-sm);}
.compare-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;}
.compare-figure figcaption{padding:14px 18px;font-size:.84rem;color:var(--muted);border-top:1px solid var(--line);background:#fbfdff;}
.compare-grid{display:grid;gap:16px;}
.compare-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:20px 22px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.compare-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#bfe4f2;}
.compare-tier{
 display:inline-flex;align-items:center;padding:3px 12px;border-radius:999px;
 background:rgba(246,196,83,.16);border:1px solid rgba(246,196,83,.42);
 color:#8a6512;font-size:.76rem;font-weight:700;margin-bottom:10px;
}
.compare-card h3{margin:0 0 10px;font-size:1.02rem;font-weight:800;color:var(--ink);}
.check-list{list-style:none;margin:0;padding:0;display:grid;gap:7px;}
.check-list li{position:relative;padding-left:22px;font-size:.89rem;color:var(--muted);line-height:1.72;}
.check-list li::before{
 content:"";position:absolute;left:0;top:.62em;width:11px;height:6px;
 border-left:2px solid var(--cyan-deep);border-bottom:2px solid var(--cyan-deep);
 transform:rotate(-45deg);
}
/* Timeline */
.timeline{position:relative;display:grid;gap:18px;padding-left:28px;max-width:880px;margin:0 auto;}
.timeline::before{
 content:"";position:absolute;left:8px;top:10px;bottom:10px;width:2px;border-radius:2px;
 background:linear-gradient(180deg,#22d3ee,#3b82f6);opacity:.38;
}
.tl-item{position:relative;}
.tl-dot{
 position:absolute;left:-27px;top:22px;width:14px;height:14px;border-radius:50%;
 background:#fff;border:3px solid var(--cyan);box-shadow:0 0 0 4px rgba(34,211,238,.12);
}
.tl-body{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
 padding:18px 22px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tl-body:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#bfe4f2;}
.tl-step{display:inline-block;font-size:.76rem;font-weight:700;color:var(--cyan-deep);letter-spacing:.08em;margin-bottom:6px;}
.tl-body h3{margin:0 0 8px;font-size:1.02rem;font-weight:800;color:var(--ink);}
.tl-body p{margin:0;font-size:.9rem;color:var(--muted);line-height:1.78;}
/* News */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.news-card{
 display:flex;flex-direction:column;gap:10px;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:22px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe4f2;}
.news-tag{
 align-self:flex-start;padding:3px 11px;border-radius:999px;
 background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.24);
 color:var(--cyan-deep);font-size:.76rem;font-weight:600;
}
.news-card h3{margin:0;font-size:1rem;font-weight:700;color:var(--ink);line-height:1.55;}
.news-card p{margin:0;font-size:.88rem;color:var(--muted);line-height:1.75;}
.news-date{margin-top:auto;padding-top:8px;font-size:.79rem;color:#93a6bd;}
.empty-note{
 margin:0;padding:26px;text-align:center;border-radius:var(--radius-lg);
 border:1px dashed #c6d9ea;background:#fbfdff;color:var(--muted);font-size:.92rem;
}
/* Guard */
.guard-card{display:flex;gap:16px;align-items:flex-start;}
.guard-icon{
 flex:0 0 auto;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
 background:rgba(34,211,238,.10);border:1px solid rgba(34,211,238,.22);color:var(--cyan-deep);
}
.guard-card h3{margin:0 0 6px;font-size:1rem;font-weight:800;color:var(--ink);}
.guard-card p{margin:0;font-size:.89rem;color:var(--muted);line-height:1.76;}
/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto;display:grid;gap:12px;}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
 box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#bfe4f2;box-shadow:var(--shadow-md);}
.faq-item summary{
 list-style:none;cursor:pointer;padding:17px 52px 17px 22px;position:relative;
 font-size:.98rem;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
 content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;
 border-right:2px solid var(--cyan-deep);border-bottom:2px solid var(--cyan-deep);
 transform:translateY(-70%) rotate(45deg);transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg);}
.faq-item summary:focus-visible{outline:3px solid rgba(34,211,238,.5);outline-offset:-3px;}
.faq-body{padding:0 22px 20px;font-size:.9rem;color:var(--muted);line-height:1.82;}
/* Join */
.join-inner{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.join-copy h2{margin:0 0 14px;font-size:clamp(1.35rem,2.4vw,1.8rem);font-weight:800;color:#fff;line-height:1.45;}
.join-copy p{margin:0;color:rgba(255,255,255,.74);font-size:.95rem;line-height:1.85;}
.join-list{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:10px;}
.join-list li{position:relative;padding-left:24px;font-size:.91rem;color:rgba(255,255,255,.78);line-height:1.72;}
.join-list li::before{
 content:"";position:absolute;left:0;top:.62em;width:11px;height:6px;
 border-left:2px solid var(--cyan-soft);border-bottom:2px solid var(--cyan-soft);
 transform:rotate(-45deg);
}
.join-form{
 background:rgba(255,255,255,.97);border-radius:var(--radius-xl);
 padding:28px;box-shadow:0 28px 64px rgba(3,12,26,.42);display:grid;gap:16px;
}
.field{display:grid;gap:7px;}
.field label{font-size:.85rem;font-weight:700;color:var(--ink-2);}
.field input,.field select,.field textarea{
 width:100%;padding:11px 14px;border-radius:10px;border:1px solid var(--line);
 background:#fbfdff;color:var(--text);font-size:.92rem;
 transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{resize:vertical;min-height:88px;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#a2b4c9;}
.field input:focus,.field select:focus,.field textarea:focus{
 outline:none;border-color:var(--cyan);background:#fff;
 box-shadow:0 0 0 3px rgba(34,211,238,.18);
}
.form-note{
 margin:0;min-height:20px;font-size:.85rem;color:var(--cyan-deep);font-weight:600;
 opacity:0;transition:opacity .25s ease;
}
.form-note.show{opacity:1;}
/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:56px 0 26px;border-top:1px solid rgba(255,255,255,.1);}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:38px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.04rem;margin-bottom:14px;}
.footer-desc{margin:0;max-width:350px;color:rgba(255,255,255,.6);font-size:.9rem;line-height:1.8;}
.footer-col h4{margin:0 0 14px;font-size:.95rem;font-weight:700;color:#fff;}
.footer-col a,.footer-col span{display:block;padding:5px 0;font-size:.89rem;color:rgba(255,255,255,.6);transition:color .2s ease;}
.footer-col a:hover{color:var(--cyan-soft);}
.footer-bottom{
 margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
 display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
 font-size:.83rem;color:rgba(255,255,255,.45);
}
/* ---------- Responsive ---------- */
@media (max-width:1024px){
 .cat-hero{padding:56px 0 60px;}
 .cat-hero-inner{grid-template-columns:1fr;gap:34px;}
 .cat-lead{max-width:none;}
 .compare-layout{grid-template-columns:1fr;}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
 .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
 .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
 .join-inner{grid-template-columns:1fr;gap:32px;}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:960px){
 .nav-toggle{display:flex;}
 .main-nav{
  position:absolute;top:64px;left:-20px;right:-20px;
  flex-direction:column;align-items:stretch;gap:2px;margin-left:0;
  background:rgba(7,21,43,.99);
  border-bottom:1px solid rgba(255,255,255,.1);
  padding:10px 20px 16px;display:none;
  box-shadow:0 22px 40px rgba(3,12,26,.5);
 }
 .main-nav.open{display:flex;}
 .nav-link{padding:12px 14px;min-height:44px;display:flex;align-items:center;}
 .nav-link.active::after{left:14px;right:auto;width:22px;}
 .stage-chips{display:none;}
 .header-cta{display:none;}
}
@media (max-width:768px){
 .section{padding:48px 0;}
 .grid-2,.grid-3,.grid-4,.news-grid{grid-template-columns:1fr;}
 .hero-actions .btn{flex:1 1 auto;}
 .cat-hero h1{font-size:1.62rem;}
 .footer-grid{grid-template-columns:1fr;}
 .footer-desc{max-width:none;}
 .footer-bottom{flex-direction:column;gap:6px;}
 .join-form{padding:22px;}
}
@media (max-width:520px){
 .container{padding:0 16px;}
 .cat-hero{padding:44px 0 50px;}
 .brand{font-size:.94rem;}
 .brand-mark{width:30px;height:30px;border-radius:9px;font-size:.86rem;}
 .btn{padding:11px 20px;font-size:.9rem;width:100%;}
 .hero-actions{flex-direction:column;}
 .figure-stats{grid-template-columns:1fr;}
 .stat-num{font-size:1.7rem;}
 .card,.news-card,.compare-card{padding:18px;}
 .timeline{padding-left:22px;}
 .tl-dot{left:-22px;}
 .faq-item summary{padding:15px 44px 15px 16px;font-size:.93rem;}
 .faq-body{padding:0 16px 16px;}
}