/* roulang page: index */
:root{
  --bg:#05070F;
  --bg-deep:#0A0F22;
  --panel:#101731;
  --primary:#2FD8C6;
  --primary-dark:#12A99B;
  --accent:#FF7A2F;
  --violet:#6C5CE7;
  --text:#EAF2FF;
  --text-2:#A9B7D0;
  --text-3:#6E7C99;
  --success:#34D399;
  --warn:#FBBF24;
  --danger:#F87171;
  --line:rgba(120,200,255,.12);
  --line-strong:rgba(47,216,198,.42);
  --glass:rgba(16,23,49,.62);
  --r-s:8px;
  --r-m:16px;
  --r-l:20px;
  --shadow:0 18px 40px -22px rgba(0,0,0,.75);
  --shadow-hover:0 26px 52px -24px rgba(0,0,0,.85);
  --ease:cubic-bezier(.22,.68,.32,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:Inter,"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.07;
  background-image:
    radial-gradient(1px 1px at 12% 18%, #EAF2FF, transparent),
    radial-gradient(1px 1px at 28% 62%, #2FD8C6, transparent),
    radial-gradient(1px 1px at 46% 30%, #EAF2FF, transparent),
    radial-gradient(1px 1px at 63% 78%, #6C5CE7, transparent),
    radial-gradient(1px 1px at 78% 22%, #EAF2FF, transparent),
    radial-gradient(1px 1px at 88% 56%, #2FD8C6, transparent),
    radial-gradient(1px 1px at 8% 86%, #EAF2FF, transparent),
    radial-gradient(1px 1px at 55% 8%, #EAF2FF, transparent);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid var(--primary);outline-offset:3px;border-radius:6px}
::selection{background:rgba(47,216,198,.28);color:#fff}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
main{position:relative;z-index:1}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.bg-deep{background:var(--bg-deep)}

/* ============ HEADER ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(5,7,15,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-stuck{background:rgba(5,7,15,.95);border-bottom-color:var(--line)}
.brand-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 0}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.logo-mark{
  width:42px;height:42px;flex:none;border-radius:12px;
  background:linear-gradient(140deg,var(--primary) 0%,var(--violet) 100%);
  display:grid;place-items:center;
  color:#04121A;font-weight:700;font-size:19px;letter-spacing:.02em;
  box-shadow:0 10px 26px -12px rgba(47,216,198,.7);
}
.logo-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.logo-title{font-size:18px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.logo-sub{font-size:12px;color:var(--text-3);letter-spacing:.04em}
.header-actions{display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;gap:8px;padding:9px 14px;border-radius:10px;background:rgba(16,23,49,.7);border:1px solid var(--line);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,216,198,.18)}
.search-box svg{width:15px;height:15px;flex:none;stroke:var(--text-3)}
.search-box input{width:150px;background:none;border:0;outline:none;color:var(--text);font-size:14px}
.search-box input::placeholder{color:var(--text-3)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);place-items:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.channel-bar{border-top:1px solid var(--line)}
.channel-inner{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;padding:6px 24px}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{
  padding:10px 16px;border-radius:10px;font-size:14px;color:var(--text-2);
  white-space:nowrap;border-bottom:2px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.channel-link:hover{color:var(--text);background:rgba(47,216,198,.08)}
.channel-link.active{color:var(--primary);background:rgba(47,216,198,.12);border-bottom-color:var(--primary)}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(10,15,34,.98);
  padding:12px 24px 20px;
}
.mobile-drawer.open{display:block}
.mobile-drawer .channel-link{display:block;padding:12px 14px;font-size:15px}
.mobile-drawer .btn{width:100%;justify-content:center;margin-top:12px}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:10px;font-size:15px;font-weight:600;
  white-space:nowrap;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn:active{transform:scale(.98)}
.btn-primary{
  background:var(--primary);color:#04121A;
  box-shadow:0 0 0 1px rgba(47,216,198,.35),0 10px 30px -10px rgba(47,216,198,.55);
}
.btn-primary:hover{
  filter:brightness(1.08);transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(47,216,198,.5),0 18px 40px -14px rgba(47,216,198,.72);
}
.btn-ghost{border:1px solid var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,216,198,.07);transform:translateY(-1px)}
.btn-accent{
  background:var(--accent);color:#1A0A02;
  box-shadow:0 0 0 1px rgba(255,122,47,.35),0 10px 30px -10px rgba(255,122,47,.5);
}
.btn-accent:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(255,122,47,.5),0 18px 40px -14px rgba(255,122,47,.65)}
.btn-sm{padding:10px 18px;font-size:14px}

.text-link{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.text-link:hover{color:#5BE6D8;text-decoration:underline;text-underline-offset:4px}

/* ============ CHIPS ============ */
.chip{
  display:inline-block;padding:4px 11px;border-radius:999px;font-size:12px;line-height:1.7;
  background:rgba(108,92,231,.16);color:#B9B1FF;border:1px solid rgba(108,92,231,.32);
}
.chip-teal{background:rgba(47,216,198,.14);color:#7BEDDF;border-color:rgba(47,216,198,.34)}
.chip-warn{background:rgba(255,122,47,.14);color:#FFB183;border-color:rgba(255,122,47,.32)}

/* ============ HERO ============ */
.hero{position:relative;padding:76px 0 92px;overflow:hidden}
.hero::after{
  content:"";position:absolute;left:50%;top:-160px;width:900px;height:520px;transform:translateX(-50%);
  background:radial-gradient(closest-side,rgba(47,216,198,.14),transparent 72%);
  pointer-events:none;z-index:0;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.04fr .96fr;gap:52px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;letter-spacing:.06em;
  color:#7BEDDF;background:rgba(47,216,198,.1);border:1px solid rgba(47,216,198,.28);
  margin-bottom:22px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px 2px rgba(47,216,198,.8)}
h1{
  font-size:clamp(30px,4.4vw,52px);line-height:1.15;font-weight:700;
  letter-spacing:.01em;color:var(--text);
}
h1 .hl{color:var(--primary)}
.hero-sub{
  margin-top:20px;font-size:clamp(16px,1.6vw,18px);color:var(--text-2);line-height:1.85;max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.trust-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.trust-bar li{
  padding:8px 15px;border-radius:999px;font-size:13px;color:var(--text-2);
  background:rgba(16,23,49,.72);border:1px solid var(--line);
}
.hero-visual{position:relative;border-radius:var(--r-l);overflow:hidden;box-shadow:var(--shadow)}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.62) 0%,rgba(5,7,15,.04) 46%,rgba(5,7,15,.86) 100%);
}
.hero-visual figcaption{
  position:absolute;left:22px;right:22px;bottom:20px;z-index:2;
  font-size:13.5px;color:var(--text-2);line-height:1.7;
}

/* ============ SECTION HEAD ============ */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:44px;flex-wrap:wrap}
.section-title{font-size:clamp(24px,3vw,36px);line-height:1.3;font-weight:700;letter-spacing:.02em}
.section-desc{margin-top:12px;color:var(--text-2);font-size:15px;max-width:660px;line-height:1.85}

/* ============ PAIN ============ */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pain-card{
  padding:26px;border-radius:var(--r-m);background:var(--panel);border:1px solid var(--line);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.pain-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.pain-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px;
  background:rgba(108,92,231,.14);border:1px solid rgba(108,92,231,.3);
}
.pain-icon svg{width:21px;height:21px;stroke:#B9B1FF;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.pain-card h3{font-size:19px;line-height:1.45;font-weight:600;margin-bottom:10px}
.pain-card p{color:var(--text-2);font-size:14.5px;line-height:1.85}

/* ============ SOLVE ============ */
.solve-block{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:80px}
.solve-block:last-child{margin-bottom:0}
.solve-block.reverse .solve-media{order:2}
.solve-media{position:relative;border-radius:var(--r-l);overflow:hidden;box-shadow:var(--shadow)}
.solve-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.solve-media::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(5,7,15,.5),rgba(5,7,15,.1) 60%)}
.solve-index{
  font-size:13px;letter-spacing:.16em;color:var(--text-3);font-weight:600;margin-bottom:12px;
}
.solve-copy h3{font-size:clamp(21px,2.2vw,26px);line-height:1.4;font-weight:700;margin-bottom:16px}
.check-list{display:flex;flex-direction:column;gap:12px;margin:22px 0 24px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);line-height:1.8}
.check-list li::before{
  content:"";flex:none;width:18px;height:18px;margin-top:7px;border-radius:6px;
  background:rgba(47,216,198,.14);border:1px solid rgba(47,216,198,.4);
  background-image:linear-gradient(45deg,transparent 44%,var(--primary) 44%,var(--primary) 56%,transparent 56%);
  background-size:10px 10px;background-position:center;background-repeat:no-repeat;
}

/* ============ CATEGORY CARDS ============ */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cat-card{
  display:flex;flex-direction:column;border-radius:var(--r-m);overflow:hidden;
  background:var(--panel);border:1px solid var(--line);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.cat-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.cat-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.cat-card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.cat-card h3{font-size:17px;font-weight:600;line-height:1.5}
.cat-card p{font-size:14px;color:var(--text-2);line-height:1.8;flex:1}
.cat-card .text-link{font-size:14px}

/* ============ STATS ============ */
.stats-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stat-item{padding:34px 22px;border-left:1px solid var(--line)}
.stat-item:first-child{border-left:0}
.stat-num{
  font-size:clamp(32px,3.4vw,44px);font-weight:700;line-height:1.15;color:var(--primary);
  font-variant-numeric:tabular-nums;letter-spacing:.01em;
}
.stat-num .unit{font-size:15px;font-weight:500;color:var(--text-2);margin-left:6px;letter-spacing:0}
.stat-label{margin-top:8px;font-size:13.5px;color:var(--text-3)}
.orbit-line{
  position:relative;height:1px;margin:0;
  background:linear-gradient(90deg,transparent,rgba(47,216,198,.5),rgba(108,92,231,.42),transparent);
}
.orbit-line::after{
  content:"";position:absolute;left:50%;top:-3.5px;width:8px;height:8px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 16px 4px rgba(47,216,198,.6);transform:translateX(-50%);
}

/* ============ NEWS ============ */
.news-top{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:20px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}
.news-card{
  border-radius:var(--r-m);overflow:hidden;background:var(--panel);border:1px solid var(--line);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.news-card:hover h3{color:var(--primary)}
.news-link{display:flex;flex-direction:column;height:100%}
.news-thumb{position:relative;overflow:hidden;background:var(--bg-deep)}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:11px;flex:1}
.news-body h3{
  font-size:18px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s var(--ease);
}
.news-sum{
  font-size:14px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--text-3)}
.news-card.is-lead .news-thumb img{aspect-ratio:16/10}
.news-card.is-lead .news-body{padding:24px 26px 26px}
.news-card.is-lead h3{font-size:21px;-webkit-line-clamp:2}
.news-card.is-lead .news-sum{-webkit-line-clamp:3;font-size:14.5px}

.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:64px 24px;border-radius:var(--r-m);border:1px dashed var(--line);
  background:rgba(16,23,49,.5);text-align:center;
}
.empty-icon{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;
  background:rgba(47,216,198,.1);border:1px solid rgba(47,216,198,.28);
}
.empty-icon svg{width:24px;height:24px;stroke:var(--primary);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{color:var(--text-2);font-size:15px}

/* ============ TESTIMONIAL ============ */
.testi-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.testi-card{
  padding:28px;border-radius:var(--r-m);background:var(--panel);border:1px solid var(--line);
  display:flex;flex-direction:column;gap:18px;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.testi-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.testi-head{display:flex;align-items:center;gap:14px}
.testi-head img{width:44px;height:44px;border-radius:50%;object-fit:cover;border:1px solid var(--line)}
.testi-name{font-size:15px;font-weight:600;line-height:1.5}
.testi-role{font-size:12.5px;color:var(--text-3)}
.testi-quote{font-size:15px;color:var(--text-2);line-height:1.9}
.testi-org{margin-top:auto;font-size:13px;color:var(--text-3);padding-top:14px;border-top:1px solid var(--line)}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;margin:0 auto}
.faq-item{
  border-radius:var(--r-m);background:var(--panel);border:1px solid var(--line);overflow:hidden;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.faq-item.open{border-color:var(--line-strong);box-shadow:var(--shadow)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;line-height:1.6;
}
.faq-q:hover{color:var(--primary)}
.faq-mark{position:relative;flex:none;width:20px;height:20px}
.faq-mark::before,.faq-mark::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-mark::before{width:14px;height:2px}
.faq-mark::after{width:2px;height:14px}
.faq-item.open .faq-mark::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a-inner{padding:0 24px 22px;font-size:15px;color:var(--text-2);line-height:1.9}

/* ============ CTA BAND ============ */
.cta-band{
  position:relative;border-radius:var(--r-l);overflow:hidden;
  padding:60px 48px;text-align:center;
  background:var(--bg-deep);border:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.08;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 10% 24%, #fff, transparent),
    radial-gradient(1px 1px at 26% 72%, #2FD8C6, transparent),
    radial-gradient(1px 1px at 44% 34%, #fff, transparent),
    radial-gradient(1px 1px at 62% 82%, #6C5CE7, transparent),
    radial-gradient(1px 1px at 80% 26%, #fff, transparent),
    radial-gradient(1px 1px at 92% 64%, #2FD8C6, transparent);
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:clamp(24px,3vw,34px);line-height:1.35;font-weight:700}
.cta-band p{margin-top:14px;color:var(--text-2);font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px}

/* ============ FOOTER ============ */
.site-footer{margin-top:96px;background:var(--bg-deep);border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;padding:64px 0 48px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .logo-mark{width:38px;height:38px;font-size:17px}
.footer-brand span{font-size:17px;font-weight:700}
.footer-about{color:var(--text-2);font-size:14px;line-height:1.9;max-width:360px}
.footer-col h4{font-size:14.5px;font-weight:600;margin-bottom:18px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.85}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:22px 0 32px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a:hover{color:var(--primary)}

.to-top{
  position:fixed;right:22px;bottom:22px;z-index:70;
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);
  box-shadow:var(--shadow);opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease),transform .25s var(--ease),border-color .25s var(--ease);
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-2px);border-color:var(--line-strong)}
.to-top svg{width:18px;height:18px;stroke:var(--primary);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ============ ENTRANCE ANIM ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ============ RESPONSIVE ============ */
@media (max-width:1280px){
  .container{padding:0 22px}
  .solve-block{gap:44px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .hero{padding:56px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .hero-sub{max-width:none}
  .news-top{grid-template-columns:1.4fr 1fr}
  .news-top .news-card:nth-child(3){display:none}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:28px}
  .footer-grid .footer-col:last-child{grid-column:span 3}
  .stats-band{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(3){border-left:0}
  .stat-item:nth-child(n+3){border-top:1px solid var(--line)}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .container{padding:0 16px}
  .search-box{display:none}
  .nav-toggle{display:grid}
  .channel-bar{display:none}
  .brand-bar{padding:12px 0}
  .logo-title{font-size:16px}
  .hero{padding:44px 0 60px}
  .hero-actions .btn{flex:1 1 auto;justify-content:center}
  .pain-grid{grid-template-columns:1fr}
  .solve-block,.solve-block.reverse{grid-template-columns:1fr;gap:26px}
  .solve-block.reverse .solve-media{order:0}
  .news-top{grid-template-columns:1fr}
  .news-top .news-card:nth-child(3){display:block}
  .news-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr}
  .testi-grid{grid-template-columns:1fr}
  .cta-band{padding:44px 22px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 36px}
  .footer-grid .footer-col:last-child{grid-column:span 2}
  .footer-about{max-width:none}
  .section-head{margin-bottom:32px}
  .faq-q{font-size:15.5px;padding:18px 18px}
  .faq-a-inner{padding:0 18px 20px}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:520px){
  .stats-band{grid-template-columns:1fr 1fr}
  .stat-item{padding:24px 16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-grid .footer-col:last-child{grid-column:span 1}
  .hero-visual figcaption{left:16px;right:16px;bottom:14px;font-size:12.5px}
  .to-top{right:14px;bottom:14px}
}

/* roulang page: article */
:root{
  --bg:#05070F;
  --bg-deep:#0A0F22;
  --panel:#101731;
  --glass:rgba(16,23,49,.62);
  --glass-border:rgba(120,200,255,.12);
  --primary:#2FD8C6;
  --primary-deep:#12A99B;
  --accent:#FF7A2F;
  --violet:#6C5CE7;
  --text:#EAF2FF;
  --text-sub:#A9B7D0;
  --text-weak:#6E7C99;
  --success:#34D399;
  --warning:#FBBF24;
  --danger:#F87171;
  --line:rgba(120,200,255,.12);
  --line-strong:rgba(120,200,255,.22);
  --radius-sm:8px;
  --radius:16px;
  --radius-lg:20px;
  --radius-pill:999px;
  --shadow:0 18px 40px -22px rgba(0,0,0,.75);
  --shadow-hover:0 26px 52px -24px rgba(0,0,0,.85);
  --glow-primary:0 0 0 1px rgba(47,216,198,.35),0 10px 30px -10px rgba(47,216,198,.55);
  --glow-accent:0 0 0 1px rgba(255,122,47,.35),0 10px 30px -10px rgba(255,122,47,.5);
  --container:1240px;
  --gap:24px;
  --section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  font-weight:400;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--primary)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:3px solid var(--primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--primary);color:#04140F;box-shadow:var(--glow-primary)}
.btn-primary:hover{background:#41e3d2;color:#04140F;box-shadow:0 0 0 1px rgba(47,216,198,.45),0 16px 38px -12px rgba(47,216,198,.7);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#1A0A00;box-shadow:var(--glow-accent)}
.btn-accent:hover{background:#ff8b4c;color:#1A0A00;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(255,122,47,.45),0 16px 38px -12px rgba(255,122,47,.6)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:14px}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(5,7,15,.86);backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:background .25s ease,border-color .25s ease}
.site-header.is-stuck{background:rgba(5,7,15,.96);border-bottom-color:var(--line)}
.brand-bar{padding:14px 0}
.brand-inner{display:flex;align-items:center;gap:18px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:.01em;color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(145deg,rgba(47,216,198,.22),rgba(108,92,231,.28));
  border:1px solid rgba(47,216,198,.35);color:var(--primary);font-size:16px;font-weight:700;
  box-shadow:0 8px 22px -12px rgba(47,216,198,.7);
}
.brand-domain{font-size:12px;color:var(--text-weak);padding:4px 10px;border:1px solid var(--line);border-radius:var(--radius-pill)}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;gap:6px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-pill);padding:4px 4px 4px 16px}
.search-box input{background:transparent;border:0;outline:none;width:150px;font-size:14px;color:var(--text);padding:6px 0}
.search-box input::placeholder{color:var(--text-weak)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(47,216,198,.25)}
.search-btn{padding:7px 16px;border-radius:var(--radius-pill);background:rgba(47,216,198,.14);color:var(--primary);font-size:13px;font-weight:600;transition:background .2s ease,color .2s ease}
.search-btn:hover{background:rgba(47,216,198,.24)}
.nav-toggle{display:none;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--radius-pill);border:1px solid var(--line-strong);font-size:14px;color:var(--text-sub)}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.channel-bar{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(10,15,34,.7),rgba(5,7,15,.4))}
.channel-inner{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:0;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{
  position:relative;padding:14px 16px;font-size:15px;color:var(--text-sub);white-space:nowrap;
  border-bottom:2px solid transparent;transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.channel-link:hover{color:var(--text);background:rgba(47,216,198,.06)}
.channel-link.active{color:var(--primary);background:rgba(47,216,198,.08);border-bottom-color:var(--primary)}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:rgba(10,15,34,.98);padding:16px 0 22px}
.mobile-drawer.is-open{display:block}
.mobile-drawer .drawer-links{display:grid;gap:6px;margin-bottom:16px}
.mobile-drawer .drawer-links a{padding:12px 14px;border-radius:var(--radius-sm);border:1px solid var(--line);font-size:15px;color:var(--text-sub)}
.mobile-drawer .drawer-links a:hover{border-color:var(--primary);color:var(--primary)}

/* ---------- 文章头部 ---------- */
main{display:block}
.article-head{padding:40px 0 8px;background:radial-gradient(900px 340px at 12% -10%,rgba(47,216,198,.10),transparent 70%),radial-gradient(700px 300px at 88% 0%,rgba(108,92,231,.12),transparent 72%)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-weak);margin-bottom:20px}
.breadcrumb a{color:var(--text-sub)}
.breadcrumb a:hover{color:var(--primary)}
.crumb-current{color:var(--text-sub);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom}
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:var(--radius-pill);font-size:13px;font-weight:600;border:1px solid rgba(108,92,231,.4);background:rgba(108,92,231,.14);color:#c7beff}
.article-title{font-size:clamp(30px,4.4vw,52px);line-height:1.15;font-weight:700;margin:18px 0 0;letter-spacing:0;max-width:900px}
.meta-row{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:20px;font-size:13px;color:var(--text-weak)}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(47,216,198,.8)}
.cover-wrap{margin:32px 0 0;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:var(--panel)}
.cover-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 268px;gap:40px;align-items:start;padding:44px 0 0}
.article-main{min-width:0}
.article-body{max-width:760px;font-size:16px;line-height:1.9;color:var(--text)}
.article-body p{margin:0 0 1.2em}
.article-body h2{position:relative;font-size:clamp(23px,2.4vw,30px);line-height:1.35;font-weight:700;margin:2em 0 .7em;padding-left:16px;letter-spacing:.02em;scroll-margin-top:110px}
.article-body h3{position:relative;font-size:20px;line-height:1.4;font-weight:600;margin:1.7em 0 .6em;padding-left:16px;letter-spacing:.02em;scroll-margin-top:110px}
.article-body h2::before,.article-body h3::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;background:linear-gradient(180deg,var(--primary),rgba(108,92,231,.7))}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(47,216,198,.35)}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:2px}
.article-body ul li,.article-body ol li{position:relative;padding-left:24px;margin-bottom:.6em;color:var(--text-sub)}
.article-body ul li::before{content:"";position:absolute;left:6px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(47,216,198,.55)}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li}
.article-body ol li::before{content:counter(li);position:absolute;left:0;top:.15em;width:16px;font-size:13px;font-weight:700;color:var(--primary);text-align:left}
.article-body blockquote{margin:1.6em 0;padding:20px 24px;border-left:3px solid var(--primary);border-radius:0 var(--radius) var(--radius) 0;background:rgba(47,216,198,.06);color:var(--text-sub)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius);margin:1.6em 0;border:1px solid var(--line)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--text-weak);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);color:var(--text-sub)}
.article-body th{background:rgba(47,216,198,.08);color:var(--text);font-weight:600}
.article-body tr:last-child td{border-bottom:0}
.article-body pre{margin:1.6em 0;padding:18px 20px;border-radius:var(--radius);background:#080d1c;border:1px solid var(--line);overflow-x:auto;font-size:14px;line-height:1.75}
.article-body code{font-family:"JetBrains Mono","SFMono-Regular",Consolas,monospace;font-size:.92em;color:#9ff0e4}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.4em 0}

/* ---------- 目录 ---------- */
.toc-panel{position:sticky;top:132px;padding:22px;border-radius:var(--radius);background:var(--glass);border:1px solid var(--glass-border);backdrop-filter:blur(14px);box-shadow:var(--shadow)}
.toc-title{font-size:13px;font-weight:700;color:var(--text-sub);letter-spacing:.06em;margin-bottom:14px}
.toc-list{display:grid;gap:4px;max-height:52vh;overflow:auto}
.toc-list a{display:block;font-size:13px;line-height:1.6;color:var(--text-weak);padding:7px 10px;border-radius:var(--radius-sm);border-left:2px solid transparent;transition:color .2s ease,background .2s ease,border-color .2s ease}
.toc-list a:hover{color:var(--text);background:rgba(47,216,198,.07)}
.toc-list a.active{color:var(--primary);background:rgba(47,216,198,.1);border-left-color:var(--primary)}
.toc-list a.is-h3{padding-left:22px;font-size:12.5px}
.toc-empty{font-size:13px;color:var(--text-weak)}

/* ---------- 文末 ---------- */
.article-tail{max-width:760px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:20px}
.tag{display:inline-flex;padding:6px 14px;border-radius:var(--radius-pill);border:1px solid var(--line);font-size:13px;color:var(--text-sub);transition:border-color .2s ease,color .2s ease}
.tag:hover{border-color:var(--primary);color:var(--primary)}
.share-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;font-size:13px;color:var(--text-weak)}
.share-row .btn{padding:9px 18px;font-size:13px}

.pager-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:34px}
.pager-card{display:block;padding:22px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.pager-card:hover{transform:translateY(-2px);border-color:rgba(47,216,198,.5);box-shadow:0 0 0 1px rgba(47,216,198,.25),var(--shadow-hover);color:inherit}
.pager-label{display:block;font-size:12px;color:var(--text-weak);margin-bottom:8px;letter-spacing:.05em}
.pager-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--text)}
.pager-card:hover .pager-title{color:var(--primary)}
.pager-desc{font-size:13.5px;color:var(--text-sub);margin-top:8px}

.section{padding-top:var(--section)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:clamp(23px,2.6vw,32px);line-height:1.3;font-weight:700}
.section-head .more{font-size:14px;color:var(--primary);white-space:nowrap}
.section-head .more:hover{color:#41e3d2}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{position:relative;display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.card:hover{transform:translateY(-2px);border-color:rgba(47,216,198,.5);box-shadow:0 0 0 1px rgba(47,216,198,.22),var(--shadow-hover)}
.card-cover{aspect-ratio:16/9;width:100%;object-fit:cover;background:var(--bg-deep)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card h3{font-size:19px;line-height:1.45;font-weight:600}
.card:hover h3{color:var(--primary)}
.card p{font-size:14px;line-height:1.75;color:var(--text-sub);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-weak)}
.card-link{position:absolute;inset:0;z-index:2}

/* ---------- 空态 ---------- */
.article-empty{max-width:760px;padding:56px 32px;border-radius:var(--radius-lg);background:var(--panel);border:1px dashed var(--line-strong);text-align:center}
.empty-icon{width:56px;height:56px;margin:0 auto 18px;border-radius:50%;display:grid;place-items:center;background:rgba(108,92,231,.16);border:1px solid rgba(108,92,231,.4);color:#c7beff;font-size:22px}
.article-empty h2{font-size:22px;font-weight:700;margin-bottom:10px}
.article-empty p{font-size:14px;color:var(--text-sub);margin-bottom:22px}

/* ---------- CTA ---------- */
.cta-band{margin-top:var(--section);padding:56px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background-image:radial-gradient(rgba(234,242,255,.06) 1px,transparent 1px);background-size:22px 22px;background-color:var(--bg-deep)}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-inner h2{font-size:clamp(23px,2.7vw,32px);line-height:1.3;font-weight:700;margin-bottom:10px}
.cta-inner p{font-size:15px;color:var(--text-sub);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:var(--section);border-top:1px solid var(--line);background:var(--bg-deep);padding:56px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:16px}
.footer-about{font-size:14px;line-height:1.85;color:var(--text-sub)}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{font-size:14px;color:var(--text-sub)}
.footer-col ul a:hover{color:var(--primary)}
.footer-col p{font-size:14px;color:var(--text-sub)}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:var(--text-weak)}
.to-top{position:fixed;right:22px;bottom:26px;z-index:70;width:46px;height:46px;border-radius:50%;display:none;place-items:center;background:var(--glass);border:1px solid var(--glass-border);backdrop-filter:blur(14px);color:var(--text-sub);box-shadow:var(--shadow)}
.to-top.is-show{display:grid}
.to-top:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-2px)}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(12px);animation:fadeUp .4s ease forwards}
@keyframes fadeUp{to{opacity:1;transform:translateY(0)}}
.d1{animation-delay:.06s}.d2{animation-delay:.12s}.d3{animation-delay:.18s}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .fade-up{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:32px}
}
@media (max-width:1024px){
  :root{--section:72px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .toc-panel{position:static;margin-top:32px;order:2}
  .toc-list{max-height:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .search-box{display:none}
}
@media (max-width:768px){
  :root{--section:56px}
  .container{padding:0 16px}
  .nav-toggle{display:inline-flex}
  .brand-domain{display:none}
  .brand-actions .btn-sm{display:none}
  .channel-link{padding:12px 13px;font-size:14px}
  .article-head{padding:28px 0 4px}
  .crumb-current{max-width:180px}
  .pager-grid{grid-template-columns:minmax(0,1fr)}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .article-empty{padding:40px 22px}
}
@media (max-width:520px){
  .logo-text{font-size:16px}
  .article-title{font-size:clamp(26px,7vw,34px)}
  .meta-row{gap:8px 16px;font-size:12.5px}
  .btn{padding:12px 20px;font-size:14px}
  .to-top{right:14px;bottom:18px}
}

/* roulang page: category1 */
:root{
  --bg:#05070F;
  --bg-deep:#0A0F22;
  --panel:#101731;
  --glass:rgba(16,23,49,.62);
  --line:rgba(120,200,255,.12);
  --line-strong:rgba(120,200,255,.22);
  --primary:#2FD8C6;
  --primary-deep:#12A99B;
  --accent:#FF7A2F;
  --violet:#6C5CE7;
  --text:#EAF2FF;
  --text-2:#A9B7D0;
  --text-3:#6E7C99;
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F87171;
  --r-sm:8px;
  --r-md:16px;
  --r-lg:20px;
  --shadow:0 18px 40px -22px rgba(0,0,0,.75);
  --shadow-lg:0 26px 54px -24px rgba(0,0,0,.85);
  --glow:0 0 0 1px rgba(47,216,198,.35),0 10px 30px -10px rgba(47,216,198,.55);
  --glow-accent:0 0 0 1px rgba(255,122,47,.35),0 10px 30px -10px rgba(255,122,47,.55);
  --gap:24px;
  --section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  font-weight:400;
  letter-spacing:0;
  text-align:left;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
a:hover{color:var(--primary)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em}
p{margin:0}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
:focus-visible{outline:3px solid rgba(47,216,198,.65);outline-offset:2px;border-radius:6px}
.num{font-family:Inter,"Segoe UI",system-ui,sans-serif;font-variant-numeric:tabular-nums;letter-spacing:0}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:var(--section) 0}
.section-sm{padding:64px 0}

/* ---------- 顶栏 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(5,7,15,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:background-color .25s ease,border-color .25s ease}
.site-header.is-stuck{background:rgba(5,7,15,.96);border-bottom-color:var(--line)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(47,216,198,.22),rgba(108,92,231,.28));
  border:1px solid var(--line-strong);
  color:var(--primary);font-weight:700;font-size:18px;
  box-shadow:0 0 0 1px rgba(47,216,198,.18),0 8px 22px -12px rgba(47,216,198,.6);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:17px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-3);letter-spacing:.04em}
.topbar-right{display:flex;align-items:center;gap:14px}
.search-box{display:flex;align-items:center;gap:8px;background:rgba(16,23,49,.72);border:1px solid var(--line);border-radius:10px;padding:6px 8px 6px 12px;transition:border-color .2s ease,box-shadow .2s ease}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,216,198,.18)}
.search-box input{width:180px;background:transparent;border:0;outline:none;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:var(--text-3)}
.search-box button{color:var(--primary);font-size:14px;padding:4px 8px;border-radius:8px}
.search-box button:hover{background:rgba(47,216,198,.12)}
.nav-toggle{display:none;width:42px;height:38px;border:1px solid var(--line);border-radius:10px;color:var(--text-2);align-items:center;justify-content:center;gap:4px;flex-direction:column}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px}

/* ---------- 频道行 ---------- */
.channel-bar{border-top:1px solid var(--line);background:rgba(10,15,34,.66)}
.channel-inner{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:6px 0}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{
  flex:0 0 auto;padding:10px 16px;font-size:14.5px;color:var(--text-2);
  border-bottom:2px solid transparent;border-radius:10px 10px 0 0;white-space:nowrap;
}
.channel-link:hover{color:var(--text);background:rgba(47,216,198,.08)}
.channel-link.active{color:var(--primary);background:rgba(47,216,198,.10);border-bottom-color:var(--primary);font-weight:600}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:10px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,filter .2s ease;
}
.btn:active{transform:scale(.98)}
.btn-primary{background:linear-gradient(140deg,var(--primary),var(--primary-deep));color:#03211F;box-shadow:var(--glow)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#03211F;box-shadow:0 0 0 1px rgba(47,216,198,.5),0 16px 38px -12px rgba(47,216,198,.65)}
.btn-accent{background:linear-gradient(140deg,#FF9553,var(--accent));color:#2A0F03;box-shadow:var(--glow-accent)}
.btn-accent:hover{filter:brightness(1.08);transform:translateY(-1px);color:#2A0F03}
.btn-ghost{border-color:var(--line-strong);color:var(--text);background:rgba(16,23,49,.5)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- 页头 banner ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(5,7,15,.94) 12%,rgba(5,7,15,.72) 58%,rgba(5,7,15,.55)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background:radial-gradient(900px 260px at 12% 0%,rgba(47,216,198,.16),transparent 70%);
}
.page-hero .container{position:relative;z-index:2}
.hero-inner{padding:64px 0 52px;max-width:860px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.6}
.breadcrumb .now{color:var(--primary)}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);
  background:rgba(47,216,198,.10);border:1px solid rgba(47,216,198,.3);border-radius:999px;padding:5px 14px;margin-bottom:20px;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--primary);display:block;box-shadow:0 0 10px rgba(47,216,198,.9)}
.page-hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.15;font-weight:700;margin-bottom:18px}
.page-hero h1 span{color:var(--primary)}
.hero-lead{font-size:17px;color:var(--text-2);line-height:1.85;max-width:640px}
.anchor-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.anchor-chips a{
  font-size:13.5px;color:var(--text-2);padding:8px 15px;border-radius:999px;
  background:rgba(16,23,49,.62);border:1px solid var(--line);backdrop-filter:blur(14px);
}
.anchor-chips a:hover{color:var(--primary);border-color:rgba(47,216,198,.45);background:rgba(47,216,198,.1)}

/* ---------- 双栏布局 ---------- */
.layout{display:grid;grid-template-columns:294px minmax(0,1fr);gap:var(--gap);align-items:start}
.side-toc{position:sticky;top:104px;display:grid;gap:20px}
.toc-card{background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);padding:22px 20px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow)}
.toc-card h2{font-size:15px;font-weight:600;letter-spacing:.06em;color:var(--text-2);margin-bottom:14px}
.toc-list{display:grid;gap:4px}
.toc-list a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;font-size:14.5px;color:var(--text-2);border-left:2px solid transparent}
.toc-list a:hover{background:rgba(47,216,198,.08);color:var(--primary)}
.toc-list a.on{color:var(--primary);background:rgba(47,216,198,.10);border-left-color:var(--primary)}
.toc-list b{font-weight:600;color:var(--text-3);font-size:12px;font-family:Inter,system-ui,sans-serif}
.toc-note{font-size:13.5px;color:var(--text-3);line-height:1.8}
.side-devices{display:grid;gap:10px;margin-top:14px}
.side-devices li{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-2);line-height:1.7}
.side-devices i{flex:0 0 6px;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--violet)}
.toc-cta{background:linear-gradient(160deg,rgba(255,122,47,.14),rgba(16,23,49,.7));border:1px solid rgba(255,122,47,.28);border-radius:var(--r-md);padding:22px 20px;box-shadow:var(--shadow)}
.toc-cta h3{font-size:17px;margin-bottom:8px}
.toc-cta p{font-size:13.5px;color:var(--text-2);margin-bottom:16px;line-height:1.75}

/* ---------- 卡片长列表 ---------- */
.block-head{margin-bottom:28px}
.block-head .kicker{font-size:13px;letter-spacing:.14em;color:var(--violet);font-weight:600;text-transform:uppercase;margin-bottom:10px;display:block}
.block-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;margin-bottom:12px}
.block-head p{color:var(--text-2);font-size:15.5px;max-width:660px}
.cards-long{display:grid;gap:20px}
.guide-card{
  display:grid;grid-template-columns:296px minmax(0,1fr);gap:24px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.guide-card:hover{transform:translateY(-2px);border-color:rgba(47,216,198,.45);box-shadow:var(--shadow-lg),0 0 0 1px rgba(47,216,198,.18)}
.guide-thumb{position:relative;border-radius:12px;overflow:hidden;aspect-ratio:16/9;background:var(--bg-deep)}
.guide-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.guide-card:hover .guide-thumb img{transform:scale(1.04)}
.guide-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(5,7,15,.72));pointer-events:none}
.guide-body{display:flex;flex-direction:column;min-width:0}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.chip{display:inline-block;font-size:12.5px;padding:4px 11px;border-radius:999px;color:#C9C2FF;background:rgba(108,92,231,.18);border:1px solid rgba(108,92,231,.4)}
.chip.teal{color:var(--primary);background:rgba(47,216,198,.12);border-color:rgba(47,216,198,.34)}
.chip.orange{color:#FFC098;background:rgba(255,122,47,.14);border-color:rgba(255,122,47,.36)}
.guide-body h3{font-size:20px;line-height:1.4;margin-bottom:10px}
.guide-card:hover .guide-body h3 a{color:var(--primary)}
.guide-body p{font-size:15px;color:var(--text-2);line-height:1.85}
.mini-list{display:grid;gap:8px;margin-top:14px}
.mini-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.75}
.mini-list li i{flex:0 0 6px;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--primary);opacity:.85}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.card-foot .more{color:var(--primary);font-weight:600}
.card-foot .more:hover{color:#7BF0E2}

/* ---------- 核验流程 ---------- */
.flow-section{background:linear-gradient(180deg,rgba(10,15,34,.9),rgba(5,7,15,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-item{position:relative;background:rgba(16,23,49,.5);border:1px solid var(--line);border-radius:var(--r-md);padding:26px 22px;transition:border-color .25s ease,transform .25s ease}
.flow-item:hover{border-color:rgba(47,216,198,.42);transform:translateY(-2px)}
.flow-step{font-family:Inter,system-ui,sans-serif;font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--accent);margin-bottom:14px;display:block}
.flow-item h3{font-size:18px;margin-bottom:10px}
.flow-item p{font-size:14px;color:var(--text-2);line-height:1.8}
.flow-line{height:1px;margin-top:44px;background:linear-gradient(90deg,transparent,rgba(47,216,198,.5),rgba(108,92,231,.4),transparent);opacity:.7}

/* ---------- 场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scene-card{background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);padding:26px 24px;backdrop-filter:blur(14px);box-shadow:var(--shadow);transition:transform .25s ease,border-color .25s ease}
.scene-card:hover{transform:translateY(-2px);border-color:rgba(108,92,231,.5)}
.scene-icon{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:16px;background:rgba(108,92,231,.16);border:1px solid rgba(108,92,231,.36);color:#BDB4FF}
.scene-card h3{font-size:19px;margin-bottom:10px}
.scene-card p{font-size:14.5px;color:var(--text-2);line-height:1.85}

/* ---------- 数据带 ---------- */
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:rgba(10,15,34,.6)}
.stats-cell{padding:30px 22px;border-right:1px solid var(--line)}
.stats-cell:last-child{border-right:0}
.stats-cell .val{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:clamp(30px,3.4vw,42px);font-weight:700;color:var(--primary);line-height:1.1}
.stats-cell .val em{font-style:normal;font-size:15px;color:var(--text-3);margin-left:4px;font-weight:500}
.stats-cell .cap{font-size:13px;color:var(--text-2);margin-top:10px;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;gap:14px;max-width:880px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-md);background:rgba(16,23,49,.5);overflow:hidden;transition:border-color .25s ease,background-color .25s ease}
.faq-item.open{border-color:rgba(47,216,198,.42);background:rgba(16,23,49,.72)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;padding:20px 22px;font-size:16.5px;font-weight:600;color:var(--text)}
.faq-q:hover{color:var(--primary)}
.faq-sign{flex:0 0 26px;width:26px;height:26px;border-radius:8px;border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:16px;line-height:1;transition:transform .25s ease,background-color .25s ease}
.faq-item.open .faq-sign{background:rgba(47,216,198,.16);transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 22px 22px;font-size:15px;color:var(--text-2);line-height:1.9}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-lg);padding:56px 52px;background-color:var(--bg-deep);background-image:radial-gradient(2px 2px at 18% 30%,rgba(255,255,255,.5),transparent 60%),radial-gradient(1.6px 1.6px at 72% 22%,rgba(47,216,198,.6),transparent 60%),radial-gradient(1.8px 1.8px at 44% 76%,rgba(255,255,255,.4),transparent 60%),radial-gradient(1.4px 1.4px at 86% 68%,rgba(108,92,231,.7),transparent 60%);}
.cta-band h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px}
.cta-band p{color:var(--text-2);font-size:15.5px;max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-deep);margin-top:var(--section)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:36px;padding:64px 0 40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:14px}
.footer-about{font-size:14px;color:var(--text-3);line-height:1.9;max-width:340px}
.site-footer h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.site-footer ul{display:grid;gap:10px}
.site-footer ul a{font-size:14px;color:var(--text-2)}
.site-footer ul a:hover{color:var(--primary)}
.site-footer p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:300px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;padding:20px 0 30px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.to-top{position:fixed;right:22px;bottom:26px;z-index:70;width:46px;height:46px;border-radius:14px;background:rgba(16,23,49,.85);border:1px solid var(--line-strong);color:var(--primary);display:flex;align-items:center;justify-content:center;backdrop-filter:blur(14px);opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px);border-color:var(--primary)}

/* ---------- 进场 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease,transform .4s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- 断点 ---------- */
@media (max-width:1180px){
  .layout{grid-template-columns:250px minmax(0,1fr)}
  .guide-card{grid-template-columns:250px minmax(0,1fr)}
}
@media (max-width:1024px){
  :root{--section:72px}
  .layout{grid-template-columns:1fr}
  .side-toc{position:static;grid-template-columns:1fr 1fr;display:grid}
  .toc-cta{grid-column:1 / -1}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:900px){
  .search-box input{width:130px}
}
@media (max-width:768px){
  :root{--section:56px;--gap:16px}
  .container{padding:0 16px}
  .nav-toggle{display:flex}
  .topbar-right .search-box,.topbar-right .btn{display:none}
  .brand-text em{display:none}
  .drawer{display:none;border-top:1px solid var(--line);background:rgba(10,15,34,.98)}
  .drawer.open{display:block}
  .drawer-inner{padding:18px 0 24px;display:grid;gap:14px}
  .drawer .search-box{display:flex;width:100%}
  .drawer .search-box input{width:100%}
  .drawer .btn{width:100%}
  .hero-inner{padding:44px 0 38px}
  .page-hero{background-position:60% center}
  .guide-card{grid-template-columns:1fr;padding:16px}
  .side-toc{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:1fr 1fr}
  .stats-cell{border-bottom:1px solid var(--line)}
  .stats-cell:nth-child(2n){border-right:0}
  .stats-cell:nth-last-child(-n+2){border-bottom:0}
  .cta-band{padding:38px 24px}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 28px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:520px){
  .page-hero h1{font-size:28px}
  .hero-lead{font-size:15.5px}
  .guide-body h3{font-size:18.5px}
  .anchor-chips a{font-size:13px;padding:7px 12px}
  .cta-actions .btn{width:100%}
  .to-top{right:14px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bg:#05070F;
  --bg-deep:#0A0F22;
  --panel:#101731;
  --primary:#2FD8C6;
  --primary-dark:#12A99B;
  --accent:#FF7A2F;
  --violet:#6C5CE7;
  --text:#EAF2FF;
  --text-2:#A9B7D0;
  --text-3:#6E7C99;
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F87171;
  --glass:rgba(16,23,49,.62);
  --border:rgba(120,200,255,.12);
  --border-strong:rgba(120,200,255,.22);
  --radius-sm:8px;
  --radius:16px;
  --radius-lg:20px;
  --pill:999px;
  --shadow:0 18px 40px -22px rgba(0,0,0,.75);
  --shadow-hover:0 26px 54px -24px rgba(0,0,0,.88);
  --glow-primary:0 0 0 1px rgba(47,216,198,.35), 0 10px 30px -10px rgba(47,216,198,.55);
  --glow-accent:0 0 0 1px rgba(255,122,47,.35), 0 10px 30px -10px rgba(255,122,47,.5);
  --section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  text-align:left;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.07;
  background-image:
    radial-gradient(1px 1px at 12% 18%, #EAF2FF 50%, transparent 51%),
    radial-gradient(1px 1px at 78% 12%, #2FD8C6 50%, transparent 51%),
    radial-gradient(1px 1px at 34% 62%, #EAF2FF 50%, transparent 51%),
    radial-gradient(1px 1px at 62% 82%, #6C5CE7 50%, transparent 51%),
    radial-gradient(1px 1px at 88% 48%, #EAF2FF 50%, transparent 51%),
    radial-gradient(1px 1px at 22% 90%, #2FD8C6 50%, transparent 51%);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
:focus-visible{outline:3px solid rgba(47,216,198,.75);outline-offset:2px;border-radius:6px}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--pill);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background-color .2s ease,border-color .2s ease;
}
.btn:active{transform:scale(.98)}
.btn-primary{
  background:linear-gradient(135deg,#2FD8C6,#12A99B);
  color:#04140F;
  box-shadow:var(--glow-primary);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,216,198,.5),0 16px 38px -12px rgba(47,216,198,.65)}
.btn-accent{
  background:linear-gradient(135deg,#FF7A2F,#F2600F);
  color:#170900;
  box-shadow:var(--glow-accent);
}
.btn-accent:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(255,122,47,.5),0 16px 38px -12px rgba(255,122,47,.6)}
.btn-ghost{
  border:1px solid var(--border-strong);
  color:var(--text);
  background:rgba(16,23,49,.45);
}
.btn-ghost:hover{border-color:rgba(47,216,198,.6);color:var(--primary);transform:translateY(-1px)}
.btn-sm{padding:10px 20px;font-size:14px}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,7,15,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease;
}
.site-header.is-stuck{
  background:rgba(5,7,15,.94);
  border-bottom-color:var(--border);
}
.brand-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:14px 0;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  flex-shrink:0;
}
.logo-mark{
  width:36px;
  height:36px;
  border-radius:10px;
  display:grid;
  place-items:center;
  background:linear-gradient(135deg,#2FD8C6,#6C5CE7);
  color:#05070F;
  font-size:17px;
  font-weight:700;
  flex-shrink:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:17px;font-weight:700}
.logo-text span{font-size:11px;color:var(--text-3);font-weight:400;letter-spacing:.02em}
.brand-actions{display:flex;align-items:center;gap:14px}
.brand-meta{font-size:12px;color:var(--text-3);letter-spacing:.03em}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:10px;
  border:1px solid var(--border-strong);
  align-items:center;
  justify-content:center;
  background:rgba(16,23,49,.5);
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--text);
  border-radius:2px;
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:var(--text);
  border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.channel-bar{border-top:1px solid var(--border)}
.channel-inner{
  display:flex;
  align-items:center;
  gap:8px;
  padding:6px 0;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{
  padding:10px 18px;
  border-radius:var(--pill);
  font-size:14px;
  color:var(--text-2);
  white-space:nowrap;
  border-bottom:2px solid transparent;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease;
}
.channel-link:hover{color:var(--text);background:rgba(47,216,198,.08)}
.channel-link.active{
  color:var(--primary);
  background:rgba(47,216,198,.12);
  border-bottom-color:var(--primary);
}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;
  inset:0 0 0 auto;
  width:min(320px,86vw);
  background:rgba(10,15,34,.97);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-left:1px solid var(--border);
  transform:translateX(102%);
  transition:transform .28s ease;
  z-index:90;
  padding:22px 20px 32px;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{
  width:38px;height:38px;border-radius:10px;
  border:1px solid var(--border-strong);
  display:grid;place-items:center;font-size:18px;color:var(--text-2);
}
.drawer-close:hover{color:var(--primary);border-color:rgba(47,216,198,.5)}
.drawer-list{display:flex;flex-direction:column;gap:6px;margin-bottom:22px}
.drawer-link{
  padding:12px 14px;
  border-radius:10px;
  color:var(--text-2);
  font-size:15px;
  border:1px solid transparent;
}
.drawer-link:hover{color:var(--text);background:rgba(47,216,198,.08);border-color:var(--border)}
.drawer-link.active{color:var(--primary);background:rgba(47,216,198,.12);border-color:rgba(47,216,198,.35)}
.drawer-cta{width:100%}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(3,5,12,.7);
  opacity:0;
  visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;
  z-index:85;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  padding:64px 0 56px;
  background-image:linear-gradient(180deg,rgba(5,7,15,.82),rgba(5,7,15,.96)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--border);
  overflow:hidden;
}
.page-head::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,198,.5),transparent);
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(110,124,153,.7)}
.breadcrumb .current{color:var(--text-2)}
.page-head h1{
  font-size:clamp(30px,4.4vw,48px);
  line-height:1.15;
  font-weight:700;
  max-width:880px;
  margin-bottom:18px;
}
.page-head h1 em{
  font-style:normal;
  color:var(--primary);
}
.lead{
  font-size:16px;
  color:var(--text-2);
  max-width:720px;
  margin-bottom:26px;
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.anchor-chip{
  padding:9px 18px;
  border-radius:var(--pill);
  font-size:13px;
  color:var(--text-2);
  border:1px solid var(--border);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.anchor-chip:hover{color:var(--primary);border-color:rgba(47,216,198,.5);transform:translateY(-1px)}
.anchor-chip .dot{
  display:inline-block;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--violet);
  margin-right:8px;
  vertical-align:middle;
}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section) 0}
.section-alt{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-deep) 50%,var(--bg) 100%)}
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--primary);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:24px;height:1px;
  background:linear-gradient(90deg,var(--primary),transparent);
}
.section-title{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  margin-bottom:14px;
}
.section-desc{color:var(--text-2);font-size:15px;max-width:640px}

/* ---------- 时间轴 ---------- */
.timeline{display:flex;flex-direction:column;gap:26px;position:relative}
.timeline-item{
  display:grid;
  grid-template-columns:132px 1fr;
  gap:32px;
  position:relative;
}
.timeline-item:not(:last-child)::before{
  content:"";
  position:absolute;
  left:132px;
  top:22px;
  bottom:-26px;
  width:1px;
  background:linear-gradient(180deg,rgba(47,216,198,.4),rgba(120,200,255,.05));
}
.tl-mark{
  position:relative;
  text-align:right;
  padding-right:0;
}
.tl-mark::after{
  content:"";
  position:absolute;
  left:126px;
  top:12px;
  width:13px;
  height:13px;
  border-radius:50%;
  background:var(--bg);
  border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(47,216,198,.12);
}
.tl-index{
  display:block;
  font-size:20px;
  font-weight:700;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.tl-time{
  display:block;
  font-size:12px;
  color:var(--text-3);
  margin-top:6px;
  font-variant-numeric:tabular-nums;
}
.tl-card{
  display:grid;
  grid-template-columns:1fr 236px;
  gap:24px;
  align-items:center;
  padding:24px 26px;
  border-radius:var(--radius);
  border:1px solid var(--border);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.tl-card:hover{transform:translateY(-2px);border-color:rgba(47,216,198,.4);box-shadow:var(--shadow-hover)}
.tl-card h3{font-size:20px;margin-bottom:10px;transition:color .2s ease}
.tl-card:hover h3{color:var(--primary)}
.tl-card p{font-size:14.5px;color:var(--text-2);line-height:1.85;margin:0}
.tl-tag{
  display:inline-block;
  padding:4px 12px;
  border-radius:var(--pill);
  font-size:12px;
  color:var(--violet);
  background:rgba(108,92,231,.14);
  border:1px solid rgba(108,92,231,.32);
  margin-bottom:12px;
}
.tl-media{
  border-radius:var(--radius-sm);
  overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--border);
  background:var(--panel);
}
.tl-media img{width:100%;height:100%;object-fit:cover}

/* ---------- 数据带 ---------- */
.stat-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-radius:var(--radius-lg);
  border:1px solid var(--border);
  background:linear-gradient(135deg,rgba(16,23,49,.85),rgba(10,15,34,.7));
  box-shadow:var(--shadow);
  overflow:hidden;
  margin-top:52px;
}
.stat-item{
  padding:30px 26px;
  position:relative;
}
.stat-item:not(:last-child)::after{
  content:"";
  position:absolute;
  right:0;top:22px;bottom:22px;
  width:1px;
  background:linear-gradient(180deg,transparent,rgba(47,216,198,.35),transparent);
}
.stat-num{
  font-size:clamp(30px,3.4vw,42px);
  font-weight:700;
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  color:var(--primary);
  display:flex;
  align-items:baseline;
  gap:4px;
}
.stat-num.accent{color:var(--accent)}
.stat-unit{font-size:14px;color:var(--text-2);font-weight:500}
.stat-label{font-size:13px;color:var(--text-3);margin-top:10px;line-height:1.7}

/* ---------- 自检清单 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.check-card{
  padding:26px 24px;
  border-radius:var(--radius);
  border:1px solid var(--border);
  background:var(--panel);
  box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.check-card:hover{transform:translateY(-2px);border-color:rgba(47,216,198,.4);box-shadow:var(--shadow-hover)}
.check-icon{
  width:42px;height:42px;
  border-radius:12px;
  display:grid;place-items:center;
  background:rgba(108,92,231,.16);
  border:1px solid rgba(108,92,231,.32);
  color:var(--violet);
  margin-bottom:16px;
}
.check-card h3{font-size:17px;margin-bottom:8px}
.check-card p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0}

/* ---------- 异常处理 ---------- */
.issue-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.issue-card{
  display:flex;
  flex-direction:column;
  padding:28px 26px;
  border-radius:var(--radius);
  border:1px solid var(--border);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.issue-card:hover{transform:translateY(-2px);border-color:rgba(47,216,198,.4);box-shadow:var(--shadow-hover)}
.issue-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:14px;
  margin-bottom:16px;
}
.issue-card h3{font-size:19px;line-height:1.45}
.badge{
  flex-shrink:0;
  padding:5px 12px;
  border-radius:var(--pill);
  font-size:12px;
  font-weight:600;
  white-space:nowrap;
}
.badge-warn{color:var(--warn);background:rgba(251,191,36,.14);border:1px solid rgba(251,191,36,.34)}
.badge-info{color:var(--primary);background:rgba(47,216,198,.12);border:1px solid rgba(47,216,198,.32)}
.badge-err{color:var(--err);background:rgba(248,113,113,.14);border:1px solid rgba(248,113,113,.34)}
.issue-card ul{display:flex;flex-direction:column;gap:10px;margin-top:auto}
.issue-card li{
  position:relative;
  padding-left:20px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
}
.issue-card li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--primary);
  opacity:.75;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  padding:72px 0;
  background:linear-gradient(135deg,rgba(10,15,34,.96),rgba(16,23,49,.9));
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  opacity:.08;
  background-image:
    radial-gradient(1px 1px at 15% 30%, #EAF2FF 50%, transparent 51%),
    radial-gradient(1px 1px at 45% 70%, #2FD8C6 50%, transparent 51%),
    radial-gradient(1px 1px at 72% 24%, #6C5CE7 50%, transparent 51%),
    radial-gradient(1px 1px at 88% 76%, #EAF2FF 50%, transparent 51%);
}
.cta-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.cta-inner p{color:var(--text-2);font-size:15px;margin:0;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--border);
  padding:64px 0 28px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-about{font-size:13.5px;color:var(--text-3);line-height:1.9;margin:0}
.footer-col h4{
  font-size:15px;
  margin-bottom:18px;
  color:var(--text);
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li a{font-size:13.5px;color:var(--text-3)}
.footer-col li a:hover{color:var(--primary)}
.footer-col p{font-size:13.5px;color:var(--text-3);line-height:1.9;margin:0}
.footer-bottom{
  border-top:1px solid var(--border);
  padding-top:24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:var(--text-3);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:22px;
  bottom:22px;
  width:46px;
  height:46px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:rgba(16,23,49,.9);
  border:1px solid var(--border-strong);
  color:var(--primary);
  box-shadow:var(--shadow);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,border-color .2s ease;
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:rgba(47,216,198,.6);transform:translateY(-2px)}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .45s ease,transform .45s ease}
.reveal.is-visible{opacity:1;transform:translateY(0)}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 22px}
}
@media (max-width:1024px){
  :root{--section:72px}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .issue-grid{grid-template-columns:1fr 1fr}
  .tl-card{grid-template-columns:1fr 200px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .brand-meta{display:none}
  .brand-actions .btn{display:none}
}
@media (max-width:768px){
  :root{--section:56px}
  .page-head{padding:44px 0 42px}
  .timeline-item{grid-template-columns:1fr;gap:14px;padding-left:26px}
  .timeline-item:not(:last-child)::before{left:5px;top:26px;bottom:-22px}
  .tl-mark{text-align:left;padding-left:0}
  .tl-mark::after{left:0;top:8px}
  .tl-index{font-size:16px}
  .tl-card{grid-template-columns:1fr;gap:18px;padding:22px 20px}
  .tl-media{order:-1}
  .stat-band{grid-template-columns:1fr 1fr;margin-top:38px}
  .stat-item:nth-child(2)::after{display:none}
  .stat-item:nth-child(1)::after,
  .stat-item:nth-child(3)::after{display:block}
  .stat-item{padding:24px 20px}
  .issue-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .check-grid{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr 1fr}
  .stat-item::after{display:none !important}
  .stat-item{border-bottom:1px solid var(--border)}
  .stat-item:nth-child(3),
  .stat-item:nth-child(4){border-bottom:0}
  .btn{width:100%}
  .cta-actions{width:100%}
  .chip-row{gap:8px}
  .anchor-chip{font-size:12px;padding:8px 14px}
  .logo-text b{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#05070F;
  --bg-deep:#0A0F22;
  --panel:#101731;
  --glass:rgba(16,23,49,.62);
  --line:rgba(120,200,255,.12);
  --line-strong:rgba(120,200,255,.24);
  --primary:#2FD8C6;
  --primary-deep:#12A99B;
  --accent:#FF7A2F;
  --violet:#6C5CE7;
  --text:#EAF2FF;
  --text-2:#A9B7D0;
  --text-3:#6E7C99;
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F87171;
  --r-sm:8px;
  --r-card:16px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow:0 18px 40px -22px rgba(0,0,0,.75);
  --shadow-hover:0 28px 52px -24px rgba(0,0,0,.85);
  --glow-primary:0 0 0 1px rgba(47,216,198,.35), 0 10px 30px -10px rgba(47,216,198,.55);
  --glow-accent:0 0 0 1px rgba(255,122,47,.35), 0 10px 30px -10px rgba(255,122,47,.5);
  --space-section:96px;
  --font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(1.2px 1.2px at 12% 18%, rgba(234,242,255,.28), transparent 60%),
    radial-gradient(1.2px 1.2px at 78% 8%, rgba(47,216,198,.28), transparent 60%),
    radial-gradient(1.2px 1.2px at 42% 62%, rgba(234,242,255,.18), transparent 60%),
    radial-gradient(1.2px 1.2px at 88% 72%, rgba(108,92,231,.25), transparent 60%);
  opacity:.7;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:#5ee9d9}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.02em}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
li{list-style:none}
button,input{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:3px solid rgba(47,216,198,.85);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ---------- 品牌行 ---------- */
.site-header{position:sticky;top:0;z-index:60}
.brand-bar{
  background:rgba(5,7,15,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.brand-inner{display:flex;align-items:center;gap:18px;min-height:74px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:19px;letter-spacing:.02em}
.logo:hover{color:var(--text)}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(150deg,rgba(47,216,198,.22),rgba(108,92,231,.28));
  border:1px solid rgba(47,216,198,.42);
  color:var(--primary);
  font-size:17px;font-weight:700;
}
.brand-domain{
  font-size:12px;color:var(--text-3);letter-spacing:.04em;
  padding-left:10px;border-left:1px solid var(--line);
}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.menu-toggle{
  display:none;
  align-items:center;gap:8px;
  padding:9px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  color:var(--text-2);font-size:14px;
  transition:border-color .2s ease,color .2s ease;
}
.menu-toggle:hover{border-color:var(--primary);color:var(--text)}

/* ---------- 频道行 ---------- */
.channel-bar{
  background:linear-gradient(180deg,rgba(10,15,34,.92),rgba(5,7,15,.88));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.channel-inner{
  display:flex;align-items:center;gap:8px;
  min-height:54px;overflow-x:auto;scrollbar-width:none;
}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{
  position:relative;
  flex:0 0 auto;
  padding:8px 16px;
  border-radius:var(--r-pill);
  color:var(--text-2);
  font-size:14.5px;
  white-space:nowrap;
  border:1px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.channel-link:hover{color:var(--text);background:rgba(47,216,198,.08);border-color:var(--line)}
.channel-link.active{
  color:var(--primary);
  background:rgba(47,216,198,.12);
  border-color:rgba(47,216,198,.38);
}
.channel-link.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:-9px;
  height:2px;border-radius:2px;background:var(--primary);
  box-shadow:0 0 12px rgba(47,216,198,.75);
}
.drawer{display:none;background:rgba(10,15,34,.98);border-bottom:1px solid var(--line)}
.drawer.open{display:block}
.drawer-list{display:flex;flex-direction:column;gap:6px;padding:14px 0}
.drawer-list a{
  padding:12px 14px;border-radius:var(--r-sm);
  color:var(--text-2);font-size:15px;
  border:1px solid transparent;
}
.drawer-list a:hover,.drawer-list a.active{color:var(--primary);background:rgba(47,216,198,.08);border-color:var(--line)}
.drawer-cta{display:flex;gap:10px;padding:0 0 18px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn:active{transform:scale(.98)}
.btn-sm{padding:9px 16px;font-size:14px;font-weight:500}
.btn-primary{
  color:#04231f;background:linear-gradient(180deg,#3fe3d2,var(--primary-deep));
  box-shadow:var(--glow-primary);
}
.btn-primary:hover{color:#04231f;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,216,198,.5),0 16px 36px -12px rgba(47,216,198,.7)}
.btn-ghost{
  color:var(--text);background:rgba(16,23,49,.5);
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{color:var(--text);border-color:var(--primary);background:rgba(47,216,198,.09);transform:translateY(-1px)}
.btn-accent{
  color:#2b1103;background:linear-gradient(180deg,#ff9254,var(--accent));
  box-shadow:var(--glow-accent);
}
.btn-accent:hover{color:#2b1103;filter:brightness(1.08);transform:translateY(-1px)}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  padding:76px 0 52px;
  background-image:linear-gradient(180deg,rgba(5,7,15,.72),rgba(5,7,15,.96)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span.sep{color:var(--text-3)}
.page-title{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.15;
  font-weight:700;
  max-width:900px;
}
.page-title em{font-style:normal;color:var(--primary)}
.page-lead{margin-top:18px;font-size:17px;color:var(--text-2);max-width:760px}
.anchor-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:var(--r-pill);
  font-size:13.5px;
  color:var(--text-2);
  background:rgba(16,23,49,.6);
  border:1px solid var(--line);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.chip:hover{color:var(--primary);border-color:rgba(47,216,198,.42);background:rgba(47,216,198,.08)}
.chip::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--violet);box-shadow:0 0 8px rgba(108,92,231,.9)}

/* ---------- 板块 ---------- */
.section{padding:var(--space-section) 0}
.section.alt{background:var(--bg-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-title{font-size:clamp(24px,3vw,36px);line-height:1.3}
.section-desc{margin-top:14px;color:var(--text-2);font-size:15.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;color:var(--primary);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--primary),transparent)}

/* ---------- 对照卡网格 ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.compare-card{
  position:relative;
  display:flex;flex-direction:column;
  padding:26px 24px 24px;
  border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.compare-card:hover{transform:translateY(-2px);border-color:rgba(47,216,198,.45);box-shadow:var(--shadow-hover)}
.compare-card::before{
  content:"";position:absolute;top:0;left:24px;right:24px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,198,.55),transparent);
  opacity:0;transition:opacity .25s ease;
}
.compare-card:hover::before{opacity:1}
.compare-card h3{font-size:20px;margin-bottom:6px}
.compare-card .card-sub{font-size:13.5px;color:var(--text-3);margin-bottom:16px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;
  border:1px solid transparent;
}
.badge-ok{color:#0b3a2c;background:rgba(52,211,153,.85);border-color:rgba(52,211,153,.5)}
.badge-violet{color:#efeaff;background:rgba(108,92,231,.28);border-color:rgba(108,92,231,.55)}
.badge-accent{color:#3a1602;background:rgba(255,122,47,.85);border-color:rgba(255,122,47,.5)}
.badge-line{color:var(--text-2);background:rgba(16,23,49,.7);border-color:var(--line-strong)}
.card-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.feature-list{display:flex;flex-direction:column;gap:11px;margin-top:auto}
.feature-list li{
  position:relative;padding-left:20px;
  font-size:14.5px;line-height:1.75;color:var(--text-2);
}
.feature-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:9px;height:2px;border-radius:2px;background:var(--primary);
}
.feature-list li strong{color:var(--text);font-weight:600}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.reverse .split-media{order:2}
.split-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  background:var(--panel);
  position:relative;
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.split-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.28),rgba(5,7,15,0) 45%,rgba(5,7,15,.55));
  pointer-events:none;
}
.split-body h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:16px}
.split-body p{color:var(--text-2);font-size:15.5px}
.check-list{display:flex;flex-direction:column;gap:14px;margin:22px 0 24px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-2);
}
.check-list .num{
  flex:0 0 26px;height:26px;border-radius:8px;
  display:grid;place-items:center;
  font-size:13px;font-weight:700;color:var(--primary);
  background:rgba(47,216,198,.1);
  border:1px solid rgba(47,216,198,.35);
}
.inline-link{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:600;font-size:14.5px;
  border-bottom:1px solid rgba(47,216,198,.4);
  padding-bottom:2px;
}
.inline-link:hover{border-bottom-color:var(--primary)}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;counter-reset:step}
.step{
  position:relative;
  padding:28px 24px 24px;
  border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(16,23,49,.85),rgba(10,15,34,.85));
  border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease;
}
.step:hover{border-color:rgba(108,92,231,.5);transform:translateY(-2px)}
.step-num{
  display:inline-grid;place-items:center;
  width:38px;height:38px;border-radius:12px;
  font-size:15px;font-weight:700;color:var(--violet);
  background:rgba(108,92,231,.14);
  border:1px solid rgba(108,92,231,.42);
  margin-bottom:16px;
}
.step h3{font-size:19px;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--text-2)}

/* ---------- 场景卡 ---------- */
.scenario-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.scenario-card{
  padding:24px;
  border-radius:var(--r-card);
  background:rgba(16,23,49,.45);
  border:1px solid var(--line);
  transition:background .25s ease,border-color .25s ease;
}
.scenario-card:hover{background:rgba(16,23,49,.7);border-color:var(--line-strong)}
.scenario-card .scenario-tag{
  display:inline-block;font-size:12.5px;color:var(--warn);
  letter-spacing:.06em;margin-bottom:12px;
}
.scenario-card h3{font-size:18px;margin-bottom:10px}
.scenario-card p{font-size:14.5px;color:var(--text-2)}

/* ---------- 数据带 ---------- */
.metrics-wrap{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(10,15,34,.9),rgba(5,7,15,.9))}
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:44px 0}
.metric{padding:0 26px;border-left:1px solid var(--line)}
.metric:first-child{border-left:0;padding-left:0}
.metric-value{
  font-size:clamp(30px,3.6vw,42px);
  font-weight:700;color:var(--primary);
  line-height:1.1;font-variant-numeric:tabular-nums;
}
.metric-value.accent{color:var(--accent)}
.metric-unit{font-size:16px;font-weight:600;color:var(--text-2);margin-left:4px}
.metric-label{margin-top:8px;font-size:13px;color:var(--text-3);letter-spacing:.04em}
.orbit-line{height:1px;background:linear-gradient(90deg,transparent,rgba(47,216,198,.55),rgba(108,92,231,.45),transparent);opacity:.6;margin:0}

/* ---------- 答疑 ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color .25s ease;
}
.faq-item.open{border-color:rgba(47,216,198,.45)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:20px 22px;
  text-align:left;font-size:16px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--primary)}
.faq-q .faq-icon{
  margin-left:auto;flex:0 0 24px;width:24px;height:24px;
  display:grid;place-items:center;border-radius:50%;
  border:1px solid var(--line-strong);color:var(--primary);
  font-size:16px;line-height:1;transition:transform .25s ease,background .25s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(47,216,198,.12)}
.faq-a{padding:0 22px 20px;font-size:14.8px;color:var(--text-2);display:none}
.faq-item.open .faq-a{display:block}
.faq-a p{margin-bottom:.9em}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  padding:72px 0;
  background:
    radial-gradient(2px 2px at 10% 30%,rgba(234,242,255,.35),transparent 60%),
    radial-gradient(2px 2px at 82% 22%,rgba(47,216,198,.35),transparent 60%),
    radial-gradient(2px 2px at 46% 80%,rgba(108,92,231,.35),transparent 60%),
    linear-gradient(120deg,rgba(16,23,49,.96),rgba(10,15,34,.96));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  text-align:center;
}
.cta-band h2{font-size:clamp(24px,3vw,34px)}
.cta-band p{margin:16px auto 0;max-width:620px;color:var(--text-2);font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer-about{font-size:14.5px;color:var(--text-2);line-height:1.85}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14.5px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.8}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.back-top{
  position:fixed;right:22px;bottom:26px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  display:none;place-items:center;
  background:rgba(16,23,49,.85);border:1px solid var(--line-strong);
  color:var(--primary);font-size:18px;
  backdrop-filter:blur(10px);
  box-shadow:var(--shadow);
}
.back-top.show{display:grid}
.back-top:hover{border-color:var(--primary);color:#5ee9d9}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease,transform .4s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--space-section:72px}
  .compare-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:0}
  .steps{grid-template-columns:1fr}
  .scenario-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 0;padding:36px 0}
  .metric:nth-child(3){border-left:0;padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--space-section:56px}
  .container{padding:0 16px}
  .channel-bar{display:none}
  .menu-toggle{display:inline-flex}
  .brand-domain{display:none}
  .brand-inner{min-height:64px;gap:12px}
  .compare-grid,.scenario-grid{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr 1fr;padding:30px 0}
  .metric{padding:0 16px}
  .metric:nth-child(odd){border-left:0;padding-left:0}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .page-head{padding:52px 0 40px}
}
@media (max-width:480px){
  .brand-actions .btn-ghost{display:none}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --bg:#05070F;
  --bg-deep:#0A0F22;
  --panel:#101731;
  --panel-glass:rgba(16,23,49,.62);
  --border:rgba(120,200,255,.12);
  --border-strong:rgba(120,200,255,.24);
  --primary:#2FD8C6;
  --primary-deep:#12A99B;
  --accent:#FF7A2F;
  --violet:#6C5CE7;
  --text:#EAF2FF;
  --text-2:#A9B7D0;
  --text-3:#6E7C99;
  --success:#34D399;
  --warning:#FBBF24;
  --danger:#F87171;
  --radius-sm:8px;
  --radius:16px;
  --radius-lg:20px;
  --pill:999px;
  --shadow:0 18px 40px -22px rgba(0,0,0,.75);
  --shadow-hover:0 24px 52px -22px rgba(0,0,0,.85);
  --gap:24px;
  --section:96px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em;line-height:1.3;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(47,216,198,.75);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,216,198,.28);}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(5,7,15,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:background-color .25s var(--ease),border-color .25s var(--ease);}
.site-header.is-stuck{background:rgba(5,7,15,.96);border-bottom-color:var(--border);}
.brand-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0;}
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.logo-mark{width:40px;height:40px;flex:0 0 40px;border-radius:12px;display:grid;place-items:center;font-size:18px;font-weight:700;color:#04120F;background:linear-gradient(140deg,var(--primary),var(--primary-deep));box-shadow:0 0 0 1px rgba(47,216,198,.35),0 10px 24px -12px rgba(47,216,198,.6);}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.brand-sub{font-size:12px;color:var(--text-3);line-height:1.5;letter-spacing:.04em;}
.brand-actions{display:flex;align-items:center;gap:12px;}
.header-search{display:flex;align-items:center;gap:8px;background:var(--panel-glass);border:1px solid var(--border);border-radius:var(--pill);padding:8px 14px;color:var(--text-3);font-size:13px;}
.header-search svg{width:15px;height:15px;flex:0 0 15px;}
.header-search span{white-space:nowrap;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--pill);padding:12px 24px;font-size:15px;font-weight:600;letter-spacing:.02em;white-space:nowrap;transition:transform .2s var(--ease),box-shadow .25s var(--ease),filter .25s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);}
.btn:active{transform:scale(.98);}
.btn-primary{background:linear-gradient(140deg,var(--primary),var(--primary-deep));color:#04120F;box-shadow:0 0 0 1px rgba(47,216,198,.35),0 10px 30px -10px rgba(47,216,198,.55);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,216,198,.5),0 16px 38px -12px rgba(47,216,198,.6);}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border-strong);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}
.btn-accent{background:linear-gradient(140deg,#FF8F4D,var(--accent));color:#1A0A02;box-shadow:0 0 0 1px rgba(255,122,47,.35),0 10px 30px -12px rgba(255,122,47,.55);}
.btn-accent:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:14px;}

.channel-bar{border-top:1px solid var(--border);background:rgba(10,15,34,.55);}
.channel-inner{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:6px 0;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-link{position:relative;flex:0 0 auto;padding:10px 16px;font-size:15px;color:var(--text-2);border-radius:10px;border-bottom:2px solid transparent;}
.channel-link:hover{color:var(--primary);background:rgba(47,216,198,.07);}
.channel-link.active{color:var(--text);font-weight:600;background:rgba(47,216,198,.1);border-bottom-color:var(--primary);}
.menu-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--border);background:var(--panel-glass);align-items:center;justify-content:center;}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

/* ---------- 页头 Hero ---------- */
.page-hero{position:relative;padding:56px 0 44px;overflow:hidden;background:linear-gradient(180deg,var(--bg-deep),var(--bg) 78%);}
.page-hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(234,242,255,.5) 1px,transparent 1px),radial-gradient(rgba(47,216,198,.35) 1px,transparent 1px);background-size:120px 120px,180px 180px;background-position:0 0,60px 40px;opacity:.07;pointer-events:none;}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{color:var(--text-2);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--pill);background:rgba(108,92,231,.16);border:1px solid rgba(108,92,231,.35);color:#C6BEFF;font-size:13px;margin-bottom:20px;}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--primary);display:inline-block;}
.page-hero h1{font-size:clamp(30px,4.4vw,52px);line-height:1.15;font-weight:700;margin-bottom:18px;}
.page-hero h1 em{font-style:normal;color:var(--primary);}
.hero-lead{font-size:17px;color:var(--text-2);max-width:620px;margin-bottom:24px;}
.anchor-chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--pill);font-size:13px;color:var(--text-2);background:rgba(16,23,49,.72);border:1px solid var(--border);transition:all .2s var(--ease);}
.chip:hover{color:var(--primary);border-color:rgba(47,216,198,.45);transform:translateY(-1px);}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow);}
.hero-visual::after{content:"";position:absolute;inset:0;border-radius:var(--radius-lg);background:linear-gradient(180deg,rgba(5,7,15,.55),transparent 42%,rgba(5,7,15,.35));pointer-events:none;}

/* ---------- 板块通用 ---------- */
.section{padding:var(--section) 0;}
.section-alt{background:linear-gradient(180deg,var(--bg),var(--bg-deep) 40%,var(--bg));}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-tag{display:inline-block;font-size:13px;letter-spacing:.12em;color:var(--primary);margin-bottom:12px;}
.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.3;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:15px;margin:0;}
.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:20px;}

/* ---------- 故障速查卡 ---------- */
.fault-card{background:var(--panel-glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);}
.fault-card:hover{transform:translateY(-3px);border-color:rgba(47,216,198,.4);box-shadow:var(--shadow-hover);}
.fault-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:20px;margin-bottom:16px;background:rgba(108,92,231,.18);border:1px solid rgba(108,92,231,.35);color:#C6BEFF;}
.fault-card h3{font-size:19px;margin-bottom:10px;}
.fault-card p{color:var(--text-2);font-size:14.5px;margin-bottom:14px;}
.fault-meta{display:flex;flex-wrap:wrap;gap:8px;}
.tag-mini{font-size:12px;padding:4px 10px;border-radius:var(--pill);background:rgba(47,216,198,.1);border:1px solid rgba(47,216,198,.25);color:var(--primary);}

/* ---------- 排查步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.step{position:relative;padding:28px 24px 24px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--border);transition:border-color .25s var(--ease),transform .25s var(--ease);}
.step:hover{border-color:rgba(47,216,198,.4);transform:translateY(-3px);}
.step-num{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--primary);margin-bottom:12px;display:block;}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{color:var(--text-2);font-size:14.5px;margin:0;}
.step::after{content:"";position:absolute;right:-11px;top:38px;width:22px;height:1px;background:linear-gradient(90deg,var(--primary),transparent);opacity:.5;}
.steps .step:last-child::after{display:none;}

/* ---------- FAQ 折叠面板 ---------- */
.faq-wrap{display:grid;grid-template-columns:.9fr 1.4fr;gap:44px;align-items:start;}
.faq-side{position:sticky;top:120px;}
.faq-side h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.faq-side p{color:var(--text-2);font-size:15px;}
.faq-side-card{margin-top:24px;padding:22px;border-radius:var(--radius);background:var(--panel-glass);border:1px solid var(--border);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);}
.faq-side-card h3{font-size:16px;margin-bottom:10px;color:var(--primary);}
.faq-side-card ul li{font-size:14px;color:var(--text-2);padding-left:16px;position:relative;margin-bottom:8px;}
.faq-side-card ul li::before{content:"";position:absolute;left:0;top:.75em;width:6px;height:6px;border-radius:50%;background:var(--violet);}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{border-radius:var(--radius);background:var(--panel);border:1px solid var(--border);overflow:hidden;transition:border-color .25s var(--ease),background-color .25s var(--ease);}
.faq-item[open]{border-color:rgba(47,216,198,.42);background:rgba(16,23,49,.9);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--text);transition:color .2s var(--ease);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-item summary .plus{flex:0 0 26px;width:26px;height:26px;border-radius:50%;border:1px solid var(--border-strong);display:grid;place-items:center;position:relative;margin-top:2px;transition:background-color .2s var(--ease),border-color .2s var(--ease),transform .25s var(--ease);}
.faq-item summary .plus::before,.faq-item summary .plus::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease);}
.faq-item summary .plus::before{width:11px;height:1.6px;}
.faq-item summary .plus::after{width:1.6px;height:11px;}
.faq-item[open] summary .plus{background:rgba(47,216,198,.14);border-color:var(--primary);}
.faq-item[open] summary .plus::after{transform:scaleY(0);opacity:0;}
.faq-answer{padding:0 24px 22px;color:var(--text-2);font-size:15px;line-height:1.9;border-top:1px solid var(--border);margin-top:0;padding-top:18px;}
.faq-answer strong{color:var(--text);font-weight:600;}

/* ---------- 术语小卡 ---------- */
.term-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.term-card{padding:22px;border-radius:var(--radius);background:linear-gradient(160deg,rgba(16,23,49,.92),rgba(10,15,34,.72));border:1px solid var(--border);transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);}
.term-card:hover{transform:translateY(-3px);border-color:rgba(108,92,231,.5);box-shadow:var(--shadow);}
.term-card h3{font-size:16px;margin-bottom:8px;display:flex;align-items:center;gap:8px;}
.term-card h3::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--violet);flex:0 0 8px;}
.term-card p{font-size:14px;color:var(--text-2);margin:0;line-height:1.8;}

/* ---------- 反馈表单 ---------- */
.feedback{display:grid;grid-template-columns:.95fr 1.05fr;gap:44px;align-items:start;}
.feedback h2{font-size:clamp(24px,3vw,34px);margin-bottom:16px;}
.feedback p{color:var(--text-2);font-size:15px;}
.feedback-list li{display:flex;gap:12px;font-size:14.5px;color:var(--text-2);margin-bottom:12px;}
.feedback-list li b{flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:rgba(47,216,198,.14);color:var(--primary);font-size:12px;display:grid;place-items:center;font-weight:700;margin-top:5px;}
.form-card{background:var(--panel-glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--border);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px;}
.field input,.field textarea,.field select{width:100%;background:rgba(5,7,15,.75);border:1px solid var(--border);border-radius:10px;padding:12px 14px;font-size:15px;color:var(--text);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);}
.field textarea{min-height:118px;resize:vertical;line-height:1.8;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(47,216,198,.35);background:rgba(5,7,15,.95);}
.field.has-error input,.field.has-error textarea{border-color:var(--danger);}
.field .err{display:none;margin-top:7px;font-size:12.5px;color:var(--danger);}
.field.has-error .err{display:block;}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:14px;}
.form-ok{display:none;margin-top:16px;padding:12px 16px;border-radius:10px;font-size:14px;color:var(--success);background:rgba(52,211,153,.1);border:1px solid rgba(52,211,153,.32);}
.form-ok.show{display:block;}

/* ---------- CTA ---------- */
.cta-band{padding:64px 0;}
.cta-inner{position:relative;overflow:hidden;border-radius:var(--radius-lg);border:1px solid var(--border);background:linear-gradient(140deg,#0C1428,#0A0F22 55%,#0D1526);padding:56px 48px;text-align:center;}
.cta-inner::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(234,242,255,.7) 1px,transparent 1px),radial-gradient(rgba(47,216,198,.55) 1px,transparent 1px);background-size:100px 100px,150px 150px;background-position:0 0,50px 30px;opacity:.08;pointer-events:none;}
.cta-inner h2{position:relative;font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.cta-inner p{position:relative;color:var(--text-2);max-width:640px;margin:0 auto 28px;}
.cta-actions{position:relative;display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--border);padding:64px 0 0;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:12px;font-size:17px;font-weight:700;margin-bottom:16px;}
.footer-brand .logo-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:15px;}
.footer-about{font-size:14px;color:var(--text-2);line-height:1.85;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--primary);}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.85;}
.footer-bottom{border-top:1px solid var(--border);padding:22px 0 30px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-3);}
.to-top{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:14px;background:var(--panel-glass);border:1px solid var(--border-strong);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);display:grid;place-items:center;color:var(--primary);opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s var(--ease);z-index:70;}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:rgba(47,216,198,.14);border-color:var(--primary);}
.to-top svg{width:18px;height:18px;}

/* 进场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* ---------- 断点 ---------- */
@media (max-width:1280px){
  .term-grid{grid-template-columns:repeat(4,1fr);}
}
@media (max-width:1024px){
  :root{--section:72px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-visual{order:-1;}
  .hero-visual img{aspect-ratio:16/9;}
  .grid-4,.term-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step::after{display:none;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .faq-side{position:static;}
  .feedback{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
  :root{--section:56px;}
  .header-search{display:none;}
  .menu-toggle{display:flex;}
  .brand-sub{display:none;}
  .channel-bar{display:none;}
  .channel-bar.open{display:block;}
  .channel-inner{flex-direction:column;align-items:stretch;padding:10px 0 14px;}
  .channel-link{border-radius:10px;border-bottom:none;}
  .channel-link.active{background:rgba(47,216,198,.12);border-left:2px solid var(--primary);}
  .grid-2,.grid-3,.grid-4,.term-grid,.steps{grid-template-columns:1fr;}
  .cta-inner{padding:40px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .page-hero{padding:36px 0 30px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .btn{padding:11px 20px;font-size:14.5px;}
  .header-search{display:none;}
  .brand-name{font-size:16px;}
  .form-card{padding:22px;}
  .faq-item summary{padding:16px 18px;font-size:15.5px;}
  .faq-answer{padding:14px 18px 18px;}
}