/* roulang page: index */
:root{
  --bg:#050a16;
  --bg-soft:#080f22;
  --panel:rgba(255,255,255,.055);
  --panel-strong:rgba(255,255,255,.09);
  --line:rgba(120,170,255,.16);
  --line-strong:rgba(90,160,255,.45);
  --text:#e9f0fd;
  --muted:#95a8c8;
  --primary:#2f6bff;
  --cyan:#22d3ee;
  --radius-lg:20px;
  --radius:14px;
  --shadow-lg:0 22px 60px rgba(6,18,46,.6);
  --shadow-glow:0 0 34px rgba(47,107,255,.55);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(1100px 520px at 12% -8%, rgba(47,107,255,.22), transparent 62%),
    radial-gradient(900px 460px at 92% 4%, rgba(34,211,238,.12), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.3;font-weight:800;letter-spacing:.01em;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}

.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 22px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,10,22,.76);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;height:74px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  display:grid;place-items:center;
  font-weight:900;font-size:18px;color:#04101f;
  box-shadow:0 0 24px rgba(47,107,255,.55);
}
.brand-text strong{display:block;font-size:16px;font-weight:800;color:#f2f7ff;letter-spacing:.03em;}
.brand-text em{display:block;font-style:normal;font-size:11px;color:#8ba1c6;letter-spacing:.18em;margin-top:2px;}

.main-nav{flex:1;min-width:0;}
.main-nav ul{display:flex;align-items:center;gap:6px;}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 15px;border-radius:11px;
  font-size:15px;font-weight:600;color:#c2d2ee;
  transition:background .22s ease,color .22s ease,box-shadow .22s ease;
}
.nav-link:hover{color:#fff;background:rgba(47,107,255,.18);}
.nav-link.active{
  color:#fff;
  background:linear-gradient(135deg,rgba(47,107,255,.42),rgba(34,211,238,.2));
  box-shadow:inset 0 0 0 1px rgba(120,170,255,.28);
}
.chev{
  width:7px;height:7px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;
  transform:rotate(45deg) translateY(-2px);opacity:.7;
}

.has-mega{position:relative;}
.mega{
  position:absolute;top:calc(100% + 12px);left:0;width:520px;
  display:grid;grid-template-columns:1fr 1fr;gap:20px;
  padding:20px;
  background:rgba(9,17,34,.97);
  border:1px solid rgba(120,170,255,.22);
  border-radius:18px;
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(18px);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0);}
.mega h4{font-size:12px;letter-spacing:.16em;color:#7d93b8;font-weight:700;margin-bottom:10px;}
.mega-link{
  display:block;padding:9px 11px;border-radius:10px;
  font-size:14px;color:#cfdcf3;
  transition:background .2s ease,color .2s ease;
}
.mega-link:hover{background:rgba(47,107,255,.2);color:#fff;}
.mega-link small{display:block;font-size:12px;color:#8199bd;font-weight:400;margin-top:2px;}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.05);
  color:#dbe7ff;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:13px;
  font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease;
}
.btn-glow{
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  color:#04101f;
  box-shadow:0 10px 28px rgba(47,107,255,.32);
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow);}
.btn-glow:active{transform:translateY(0);box-shadow:0 6px 18px rgba(47,107,255,.4);}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border-color:rgba(120,170,255,.32);
  color:#dce8ff;
}
.btn-ghost:hover{background:rgba(47,107,255,.2);border-color:var(--line-strong);transform:translateY(-2px);}
.btn-block{width:100%;}

/* ---------- 区块 ---------- */
.section{padding:78px 0;position:relative;}
.section-tight{padding:58px 0;}
.section-alt{
  background:linear-gradient(180deg,rgba(11,21,44,.72),rgba(5,10,22,.1));
  border-top:1px solid rgba(120,170,255,.09);
  border-bottom:1px solid rgba(120,170,255,.09);
}
.section-head{max-width:780px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.12em;
  color:#9fd9ff;
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.28);
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);display:inline-block;}
.section-head h2{font-size:clamp(24px,2.8vw,34px);margin-top:16px;color:#f0f6ff;}
.section-desc{color:var(--muted);font-size:15.5px;line-height:1.95;margin-top:14px;}

/* ---------- 网格 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.grid-2>*,.grid-3>*,.grid-4>*{min-width:0;}

/* ---------- 玻璃卡片 ---------- */
.glass-card{
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.022));
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.glass-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 20px 46px rgba(8,26,68,.55);
}
.card-icon{
  width:46px;height:46px;border-radius:13px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(47,107,255,.35),rgba(34,211,238,.18));
  border:1px solid rgba(120,170,255,.3);
  color:#a9d8ff;margin-bottom:16px;
}
.card-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.glass-card h3{font-size:17.5px;color:#eef5ff;margin-bottom:10px;}
.glass-card p{font-size:14.5px;color:var(--muted);line-height:1.9;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:84px 0 74px;
  border-bottom:1px solid rgba(120,170,255,.1);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(120,170,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,170,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 20%,#000 10%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 10%,transparent 72%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:-10%;top:-30%;width:60%;height:120%;
  background:radial-gradient(circle,rgba(47,107,255,.24),transparent 62%);
  filter:blur(20px);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:52px;align-items:center;}
.hero h1{font-size:clamp(27px,3.6vw,44px);line-height:1.28;color:#f4f8ff;margin-top:20px;}
.hero h1 span{
  background:linear-gradient(120deg,#67a4ff,#22d3ee);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{color:#a8bada;font-size:15.5px;line-height:2;margin-top:20px;max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 13px;border-radius:999px;
  font-size:13px;color:#b6c8e6;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(120,170,255,.18);
}

.hero-panel{
  position:relative;
  border-radius:24px;
  padding:26px;
  background:linear-gradient(165deg,rgba(24,44,86,.72),rgba(8,16,34,.86));
  border:1px solid rgba(120,170,255,.26);
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.hero-panel::before{
  content:"";position:absolute;inset:-1px;border-radius:24px;
  background:linear-gradient(135deg,rgba(47,107,255,.35),transparent 45%,rgba(34,211,238,.28));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  padding:1px;pointer-events:none;
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px;}
.panel-head h3{font-size:15px;color:#dbe8ff;letter-spacing:.04em;}
.panel-dot{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:#7fe3f5;}
.panel-dot i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);}
.panel-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 0;border-bottom:1px dashed rgba(120,170,255,.16);
  font-size:14px;
}
.panel-row:last-of-type{border-bottom:none;}
.panel-row span{color:#93a9c9;}
.panel-row b{color:#e7f0ff;font-weight:700;text-align:right;}
.panel-foot{
  margin-top:18px;display:flex;align-items:center;gap:13px;
  padding:14px;border-radius:14px;
  background:rgba(47,107,255,.14);
  border:1px solid rgba(120,170,255,.28);
}
.play-btn{
  width:46px;height:46px;border-radius:50%;flex-shrink:0;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  box-shadow:0 0 26px rgba(47,107,255,.6);
  transition:transform .22s ease,box-shadow .22s ease;
}
.play-btn:hover{transform:scale(1.06);box-shadow:0 0 36px rgba(34,211,238,.7);}
.play-btn svg{width:16px;height:16px;fill:#04101f;margin-left:2px;}
.panel-foot-text{font-size:13px;color:#c3d6f4;line-height:1.6;}
.panel-foot-text b{display:block;color:#fff;font-size:13.5px;font-weight:700;}

/* ---------- 下载区 ---------- */
.dl-card{display:flex;flex-direction:column;gap:0;height:100%;}
.dl-card h3{font-size:18px;margin-bottom:6px;}
.dl-card .dl-sub{font-size:12.5px;color:#7fd6ea;font-weight:700;letter-spacing:.1em;margin-bottom:12px;}
.dl-card p{flex:1;}
.dl-card .btn{margin-top:20px;}
.dl-file{
  display:inline-block;margin-top:12px;
  font-size:12px;color:#7f94b6;letter-spacing:.06em;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}

/* ---------- 指标看板 ---------- */
.metric{
  position:relative;overflow:hidden;
  padding:24px;
  border-radius:var(--radius-lg);
  background:linear-gradient(160deg,rgba(47,107,255,.16),rgba(255,255,255,.03));
  border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease;
}
.metric:hover{border-color:var(--line-strong);transform:translateY(-3px);}
.metric-idx{
  font-size:12px;font-weight:800;letter-spacing:.2em;color:#6ea6ff;
  display:block;margin-bottom:12px;
}
.metric h3{font-size:17px;color:#eef5ff;margin-bottom:9px;}
.metric p{font-size:14px;color:#9db0cf;line-height:1.85;}

/* ---------- 对比 ---------- */
.compare-card{position:relative;height:100%;display:flex;flex-direction:column;}
.compare-card.featured{
  background:linear-gradient(165deg,rgba(47,107,255,.24),rgba(34,211,238,.08));
  border-color:rgba(120,170,255,.42);
  box-shadow:0 16px 44px rgba(20,60,150,.4);
}
.compare-badge{
  position:absolute;top:-12px;right:20px;
  padding:4px 12px;border-radius:999px;
  font-size:11.5px;font-weight:800;letter-spacing:.08em;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  color:#04101f;
}
.compare-card h3{font-size:18px;color:#f0f6ff;margin-bottom:6px;}
.compare-card .compare-sub{font-size:13px;color:#8fb7e8;margin-bottom:18px;}
.compare-list{display:flex;flex-direction:column;gap:12px;flex:1;}
.compare-list li{
  display:flex;justify-content:space-between;gap:14px;
  font-size:13.8px;color:#a9bbd8;
  padding-bottom:12px;border-bottom:1px dashed rgba(120,170,255,.14);
}
.compare-list li:last-child{border-bottom:none;padding-bottom:0;}
.compare-list li b{color:#e6efff;font-weight:700;text-align:right;flex-shrink:0;}

/* ---------- 流程 ---------- */
.step{
  position:relative;
  padding:26px;
  border-radius:var(--radius-lg);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  transition:background .25s ease,border-color .25s ease;
}
.step:hover{background:rgba(47,107,255,.12);border-color:var(--line-strong);}
.step-num{
  width:44px;height:44px;border-radius:13px;
  display:grid;place-items:center;
  font-weight:900;font-size:16px;color:#04101f;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  box-shadow:0 0 22px rgba(47,107,255,.45);
  margin-bottom:16px;
}
.step h3{font-size:17px;color:#eef5ff;margin-bottom:9px;}
.step p{font-size:14px;color:var(--muted);line-height:1.85;}

/* ---------- 专题标签 ---------- */
.topic-cloud{display:flex;flex-wrap:wrap;gap:12px;}
.topic-pill{
  display:inline-flex;align-items:center;
  padding:10px 18px;border-radius:999px;
  font-size:14px;color:#bdd0ee;
  background:rgba(255,255,255,.045);
  border:1px solid rgba(120,170,255,.2);
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease;
}
.topic-pill:hover{background:rgba(47,107,255,.22);color:#fff;border-color:var(--line-strong);transform:translateY(-2px);}

/* ---------- CMS 资讯 ---------- */
.news-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:26px;align-items:start;}
.news-list{display:flex;flex-direction:column;gap:14px;}
.news-card{
  display:block;
  padding:22px 24px;
  border-radius:var(--radius-lg);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  transition:transform .24s ease,border-color .24s ease,background .24s ease,box-shadow .24s ease;
}
.news-card:hover{
  transform:translateX(4px);
  background:rgba(47,107,255,.1);
  border-color:var(--line-strong);
  box-shadow:0 14px 36px rgba(8,26,68,.45);
}
.news-card h3{font-size:16.5px;color:#eef5ff;margin-bottom:9px;}
.news-card p{font-size:14px;color:#9db0cf;line-height:1.85;}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:14px;font-size:12.5px;color:#7f94b6;}
.news-meta span{
  padding:3px 10px;border-radius:999px;
  background:rgba(47,107,255,.18);
  color:#a9c8ff;
  border:1px solid rgba(120,170,255,.22);
}
.news-empty{
  padding:30px;border-radius:var(--radius-lg);
  border:1px dashed rgba(120,170,255,.28);
  color:#8ea3c4;font-size:14.5px;text-align:center;
  background:rgba(255,255,255,.02);
}
.news-side{
  position:sticky;top:98px;
  padding:26px;border-radius:var(--radius-lg);
  background:linear-gradient(165deg,rgba(47,107,255,.2),rgba(8,16,34,.7));
  border:1px solid rgba(120,170,255,.28);
  box-shadow:var(--shadow-lg);
}
.news-side h3{font-size:17px;color:#f0f6ff;margin-bottom:10px;}
.news-side p{font-size:14px;color:#a2b6d5;line-height:1.85;margin-bottom:18px;}
.news-side .btn{margin-top:4px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;}
.faq-item{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  overflow:hidden;
  transition:border-color .22s ease,background .22s ease;
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item[open]{background:rgba(47,107,255,.1);border-color:var(--line-strong);}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:19px 22px;
  font-size:15.5px;font-weight:700;color:#e7f0ff;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";width:9px;height:9px;flex-shrink:0;
  border-right:2px solid #7fb3ff;border-bottom:2px solid #7fb3ff;
  transform:rotate(45deg);transition:transform .24s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg);}
.faq-body{padding:0 22px 20px;font-size:14.5px;color:#a3b6d5;line-height:1.95;}

/* ---------- 收口 ---------- */
.final-cta{
  text-align:center;
  padding:52px 32px;
  border-radius:26px;
  background:
    radial-gradient(600px 240px at 50% 0%,rgba(47,107,255,.35),transparent 70%),
    linear-gradient(160deg,rgba(20,40,80,.85),rgba(7,14,30,.9));
  border:1px solid rgba(120,170,255,.3);
  box-shadow:var(--shadow-lg);
}
.final-cta h2{font-size:clamp(23px,2.7vw,32px);color:#f2f8ff;}
.final-cta p{max-width:700px;margin:16px auto 0;color:#a7bbdb;font-size:15px;line-height:1.95;}
.final-cta .btn{margin-top:28px;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid rgba(120,170,255,.14);
  background:linear-gradient(180deg,rgba(8,15,32,.6),rgba(3,7,16,.95));
  padding:56px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand strong{font-size:16px;color:#eef5ff;}
.footer-about{font-size:14px;color:#8ea3c4;line-height:1.9;max-width:330px;}
.footer-col h4{font-size:13px;letter-spacing:.14em;color:#7e94b8;margin-bottom:14px;font-weight:800;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#a7bad8;transition:color .2s ease;}
.footer-col a:hover{color:#7fd6ea;}
.footer-note{font-size:13px;color:#8199bd;line-height:1.9;}
.footer-bottom{
  margin-top:40px;padding-top:22px;
  border-top:1px solid rgba(120,170,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:#7089ad;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:38px;}
  .hero-panel{max-width:560px;}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-layout{grid-template-columns:1fr;}
  .news-side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:900px){
  .main-nav{
    position:fixed;top:74px;left:0;right:0;
    display:none;
    padding:14px 22px 22px;
    background:rgba(6,12,26,.98);
    border-bottom:1px solid rgba(120,170,255,.18);
    backdrop-filter:blur(18px);
    box-shadow:0 24px 50px rgba(0,0,0,.6);
    max-height:calc(100vh - 74px);
    overflow-y:auto;
  }
  .main-nav.open{display:block;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:6px;}
  .nav-link{width:100%;padding:13px 16px;font-size:15.5px;}
  .mega{display:none;}
  .has-mega .chev{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
}
@media (max-width:768px){
  .section{padding:58px 0;}
  .section-tight{padding:44px 0;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .hero{padding:58px 0 52px;}
  .hero-panel{padding:22px;}
  .glass-card{padding:22px;}
  .final-cta{padding:40px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-about{max-width:none;}
}
@media (max-width:520px){
  .site-container{padding:0 16px;}
  .header-inner{height:66px;gap:14px;}
  .brand-text em{display:none;}
  .main-nav{top:66px;max-height:calc(100vh - 66px);}
  .hero h1{font-size:26px;}
  .hero-lead{font-size:14.5px;}
  .hero-actions .btn{width:100%;}
  .btn{padding:12px 20px;font-size:14.5px;}
  .panel-row{font-size:13.3px;}
  .news-card{padding:18px;}
  .faq-item summary{padding:16px 18px;font-size:14.8px;}
  .faq-body{padding:0 18px 18px;}
}

/* roulang page: article */
:root{
  --bg:#050a16;
  --bg-soft:#080f22;
  --panel:rgba(255,255,255,.055);
  --panel-strong:rgba(255,255,255,.09);
  --line:rgba(120,170,255,.16);
  --line-strong:rgba(90,160,255,.45);
  --text:#e9f0fd;
  --muted:#95a8c8;
  --primary:#2f6bff;
  --cyan:#22d3ee;
  --radius-lg:20px;
  --radius:14px;
  --shadow-lg:0 22px 60px rgba(6,18,46,.6);
  --shadow-glow:0 0 34px rgba(47,107,255,.55);
}
html{scroll-behavior:smooth;}
*,
*::before,
*::after{box-sizing:border-box;}
body{
  margin:0;
  background:
    radial-gradient(1100px 520px at 12% -8%, rgba(47,107,255,.22), transparent 62%),
    radial-gradient(900px 460px at 92% 4%, rgba(34,211,238,.12), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:800;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 22px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,10,22,.76);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;height:74px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  display:grid;place-items:center;
  font-weight:900;font-size:18px;color:#04101f;
  box-shadow:0 0 24px rgba(47,107,255,.55);
}
.brand-text strong{display:block;font-size:16px;font-weight:800;color:#f2f7ff;letter-spacing:.03em;}
.brand-text em{display:block;font-style:normal;font-size:11px;color:#8ba1c6;letter-spacing:.18em;margin-top:2px;}
.main-nav{flex:1;min-width:0;}
.main-nav ul{display:flex;align-items:center;gap:6px;}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 15px;border-radius:11px;
  font-size:15px;font-weight:600;color:#c2d2ee;
  transition:background .22s ease,color .22s ease,box-shadow .22s ease;
}
.nav-link:hover{color:#fff;background:rgba(47,107,255,.18);}
.nav-link.active{
  color:#fff;
  background:linear-gradient(135deg,rgba(47,107,255,.42),rgba(34,211,238,.2));
  box-shadow:inset 0 0 0 1px rgba(120,170,255,.28);
}
.has-mega{position:relative;}
.mega{
  position:absolute;top:calc(100% + 12px);left:0;width:520px;
  display:grid;grid-template-columns:1fr 1fr;gap:20px;
  padding:20px;
  background:rgba(9,17,34,.97);
  border:1px solid rgba(120,170,255,.22);
  border-radius:18px;
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(18px);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0);}
.mega h4{font-size:12px;letter-spacing:.16em;color:#7d93b8;font-weight:700;margin-bottom:10px;}
.mega-link{
  display:block;padding:9px 11px;border-radius:10px;
  font-size:14px;color:#cfdcf3;
  transition:background .2s ease,color .2s ease;
}
.mega-link:hover{background:rgba(47,107,255,.2);color:#fff;}
.mega-link small{display:block;font-size:12px;color:#8199bd;font-weight:400;margin-top:2px;}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.05);
  color:#dbe7ff;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:13px;
  font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease;
}
.btn-glow{
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  color:#04101f;
  box-shadow:0 10px 28px rgba(47,107,255,.32);
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow);}
.btn-glow:active{transform:translateY(0);box-shadow:0 6px 18px rgba(47,107,255,.4);}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border-color:rgba(120,170,255,.32);
  color:#dce8ff;
}
.btn-ghost:hover{background:rgba(47,107,255,.2);border-color:var(--line-strong);transform:translateY(-2px);}
.btn-block{width:100%;}

/* ---------- 通用区块 ---------- */
.section{padding:70px 0;position:relative;}
.section-alt{
  background:linear-gradient(180deg,rgba(11,21,44,.72),rgba(5,10,22,.1));
  border-top:1px solid rgba(120,170,255,.09);
  border-bottom:1px solid rgba(120,170,255,.09);
}
.section-head{max-width:760px;margin-bottom:34px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.12em;
  color:#9fd9ff;
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.28);
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);display:inline-block;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);margin-top:14px;color:#f0f6ff;}
.section-desc{color:var(--muted);font-size:15.5px;line-height:1.95;margin-top:12px;}
.glass-card{
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.022));
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:24px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.glass-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 20px 46px rgba(8,26,68,.55);
}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.grid-3>*,.grid-2>*{min-width:0;}

/* ---------- 文章头图 ---------- */
.article-hero{
  position:relative;
  padding:52px 0 46px;
  border-bottom:1px solid rgba(120,170,255,.12);
  background:
    radial-gradient(760px 320px at 18% 0%, rgba(47,107,255,.26), transparent 66%),
    radial-gradient(620px 300px at 88% 10%, rgba(34,211,238,.14), transparent 64%),
    linear-gradient(180deg,rgba(9,18,38,.9),rgba(5,10,22,.2));
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,170,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 0%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 20%,transparent 78%);
  pointer-events:none;
}
.article-hero .site-container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13.5px;color:#8fa5c8;margin-bottom:18px;}
.breadcrumb a{color:#a9c3e8;transition:color .2s ease;}
.breadcrumb a:hover{color:#fff;}
.breadcrumb span.sep{color:#4d6183;}
.article-hero h1{
  font-size:clamp(24px,3.4vw,40px);
  color:#f4f8ff;
  letter-spacing:.01em;
  max-width:960px;
  overflow-wrap:break-word;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.meta-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;
  font-size:13px;color:#c9dbf6;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(120,170,255,.24);
}
.meta-chip b{color:#8fd7ff;font-weight:700;}
.pull-quote{
  margin-top:30px;
  padding:18px 22px;
  max-width:820px;
  border-left:3px solid var(--cyan);
  border-radius:0 14px 14px 0;
  background:linear-gradient(90deg,rgba(34,211,238,.13),rgba(34,211,238,.02));
  color:#cfe4ff;
  font-size:15.5px;
  line-height:1.9;
}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 330px;
  gap:26px;
  align-items:start;
}
.article-main{
  min-width:0;
  background:linear-gradient(160deg,rgba(255,255,255,.062),rgba(255,255,255,.018));
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:32px clamp(20px,3vw,40px) 36px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 18px 48px rgba(6,18,46,.42);
}
.article-body{font-size:16.5px;line-height:2;color:#d3e0f5;overflow-wrap:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:clamp(20px,2.2vw,24px);
  color:#f1f7ff;
  margin:38px 0 16px;
  padding-left:14px;
  position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--primary),var(--cyan));
  box-shadow:0 0 14px rgba(47,107,255,.7);
}
.article-body h3{font-size:clamp(17px,1.9vw,19px);color:#e6f0ff;margin:28px 0 12px;}
.article-body h4{font-size:16px;color:#dbe8ff;margin:22px 0 10px;}
.article-body p{margin:0 0 16px;color:#c7d6ee;}
.article-body strong{color:#ffffff;font-weight:700;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:7px 0;color:#c7d6ee;}
.article-body a{color:#8fd7ff;border-bottom:1px dashed rgba(143,215,255,.5);transition:color .2s ease,border-color .2s ease;}
.article-body a:hover{color:#fff;border-color:#fff;}
.article-body img{border-radius:14px;margin:18px 0;border:1px solid var(--line);}
.article-body blockquote{
  margin:20px 0;padding:16px 20px;
  border-left:3px solid var(--primary);
  background:rgba(47,107,255,.1);
  border-radius:0 12px 12px 0;
  color:#cfe0fa;
}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid rgba(120,170,255,.22);padding:10px 12px;text-align:left;color:#c9d9f1;}
.article-body th{background:rgba(47,107,255,.16);color:#eaf3ff;font-weight:700;}
.article-body code{background:rgba(255,255,255,.08);padding:2px 6px;border-radius:6px;font-size:14px;}
.article-body hr{border:0;border-top:1px solid rgba(120,170,255,.18);margin:26px 0;}

.notice-empty{
  padding:34px 24px;border-radius:16px;
  border:1px dashed rgba(120,170,255,.34);
  background:rgba(47,107,255,.08);
  text-align:center;
}
.notice-empty h2{font-size:20px;color:#eef5ff;margin-bottom:10px;}
.notice-empty p{color:var(--muted);font-size:15px;}
.notice-empty .btn{margin-top:18px;}

/* ---------- 侧栏 ---------- */
.article-side{min-width:0;display:flex;flex-direction:column;gap:18px;position:sticky;top:96px;}
.side-card{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:22px;
}
.side-card h3{font-size:15px;color:#eaf3ff;letter-spacing:.04em;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);}
.info-list li{
  display:flex;justify-content:space-between;gap:12px;
  padding:9px 0;font-size:13.5px;color:#9fb4d6;
  border-bottom:1px dashed rgba(120,170,255,.14);
}
.info-list li:last-child{border-bottom:0;}
.info-list li span:last-child{color:#dbe8ff;font-weight:600;text-align:right;min-width:0;overflow-wrap:break-word;}
.risk-card{
  border-color:rgba(255,180,80,.32);
  background:linear-gradient(160deg,rgba(255,180,80,.12),rgba(255,255,255,.018));
}
.risk-card h3::before{background:#ffb450;box-shadow:0 0 10px #ffb450;}
.risk-card p{font-size:13.5px;color:#e6d3b3;line-height:1.9;}
.side-dl p{font-size:13.5px;color:var(--muted);margin-bottom:14px;line-height:1.85;}
.side-dl .btn{font-size:14px;padding:11px 18px;}
.side-dl .btn + .btn{margin-top:10px;}

/* ---------- 要点卡 ---------- */
.point-card h3{font-size:17px;color:#f0f6ff;margin-bottom:10px;}
.point-card p{font-size:14.5px;color:var(--muted);line-height:1.95;}
.point-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;
  font-size:14px;font-weight:800;color:#04101f;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  box-shadow:0 0 18px rgba(47,107,255,.5);
  margin-bottom:14px;
}

/* ---------- 清单 ---------- */
.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 22px;}
.checklist li{
  display:flex;gap:11px;align-items:flex-start;
  padding:14px 16px;border-radius:13px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(120,170,255,.14);
  font-size:14.5px;color:#c9d9f1;line-height:1.8;
  min-width:0;
}
.checklist li i{
  flex-shrink:0;width:20px;height:20px;border-radius:50%;
  display:grid;place-items:center;margin-top:2px;
  background:rgba(34,211,238,.16);color:#7fe4f7;font-size:12px;font-style:normal;
  border:1px solid rgba(34,211,238,.4);
}
.myth-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.myth-card h3{font-size:16px;margin-bottom:8px;}
.myth-card.wrong{border-color:rgba(255,120,120,.28);background:linear-gradient(160deg,rgba(255,110,110,.1),rgba(255,255,255,.018));}
.myth-card.wrong h3{color:#ffb3b3;}
.myth-card.right{border-color:rgba(34,211,238,.3);background:linear-gradient(160deg,rgba(34,211,238,.1),rgba(255,255,255,.018));}
.myth-card.right h3{color:#8ef0ff;}
.myth-card p{font-size:14.5px;color:#bccde6;line-height:1.95;}

/* ---------- 下载 ---------- */
.download-wrap{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:28px;align-items:center;
  padding:34px;
  border-radius:24px;
  background:
    radial-gradient(560px 260px at 12% 0%, rgba(47,107,255,.3), transparent 68%),
    linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid rgba(120,170,255,.28);
  box-shadow:var(--shadow-lg);
}
.download-wrap h2{font-size:clamp(22px,2.4vw,28px);color:#f3f8ff;}
.download-wrap p{color:#a9bddc;font-size:15px;line-height:1.95;margin-top:12px;}
.dl-buttons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;}
.dl-btn{
  display:flex;flex-direction:column;align-items:center;gap:5px;
  padding:18px 12px;border-radius:16px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(120,170,255,.26);
  color:#e8f1ff;font-size:14.5px;font-weight:700;text-align:center;
  transition:transform .22s ease,border-color .22s ease,background .22s ease,box-shadow .22s ease;
  min-width:0;
}
.dl-btn small{font-size:11.5px;font-weight:500;color:#8fa6c8;letter-spacing:.02em;}
.dl-btn:hover{transform:translateY(-3px);background:rgba(47,107,255,.22);border-color:var(--line-strong);box-shadow:0 14px 30px rgba(8,26,68,.55);}
.dl-btn.primary{
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  color:#04101f;border-color:transparent;
  box-shadow:0 12px 28px rgba(47,107,255,.36);
}
.dl-btn.primary small{color:#082033;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(255,255,255,.04);
  overflow:hidden;
  transition:border-color .22s ease,background .22s ease;
}
.faq-item:hover{border-color:var(--line-strong);background:rgba(47,107,255,.09);}
.faq-item summary{
  cursor:pointer;list-style:none;
  padding:17px 22px;
  font-size:15.5px;font-weight:700;color:#e8f1ff;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex-shrink:0;font-size:19px;font-weight:700;color:#8fd7ff;
  transition:transform .22s ease;
}
.faq-item[open] summary::after{content:"−";}
.faq-item .faq-body{padding:0 22px 20px;font-size:14.5px;color:#b9cbe4;line-height:1.95;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:20px;
  padding:56px 0 26px;
  border-top:1px solid rgba(120,170,255,.14);
  background:linear-gradient(180deg,rgba(8,15,34,.6),rgba(4,8,18,.95));
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px;}
.footer-brand strong{font-size:15px;color:#eaf3ff;line-height:1.5;}
.footer-about{font-size:13.5px;color:#8fa4c4;line-height:1.95;}
.footer-col h4{font-size:13px;letter-spacing:.14em;color:#7d93b8;margin-bottom:14px;font-weight:700;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:#b7c8e2;transition:color .2s ease;}
.footer-col ul li a:hover{color:#8fd7ff;}
.footer-note{font-size:13px;color:#8fa4c4;line-height:1.95;}
.footer-bottom{
  margin-top:34px;padding-top:20px;
  border-top:1px solid rgba(120,170,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12.5px;color:#7b8ead;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr;}
  .article-side{position:static;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .download-wrap{grid-template-columns:1fr;}
  .nav-cta{display:none;}
}
@media (max-width:880px){
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:absolute;top:74px;left:0;right:0;
    display:none;
    padding:16px 22px 22px;
    background:rgba(7,13,29,.98);
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-lg);
  }
  body.nav-open .main-nav{display:block;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px;}
  .nav-link{width:100%;padding:12px 14px;}
  .mega{
    position:static;width:100%;opacity:1;visibility:visible;transform:none;
    grid-template-columns:1fr;margin-top:8px;padding:14px;
    box-shadow:none;
  }
  .header-inner{height:68px;}
  .main-nav{top:68px;}
}
@media (max-width:768px){
  .section{padding:52px 0;}
  .article-hero{padding:38px 0 34px;}
  .checklist{grid-template-columns:1fr;}
  .myth-grid{grid-template-columns:1fr;}
  .dl-buttons{grid-template-columns:1fr;}
  .dl-btn{flex-direction:row;justify-content:space-between;align-items:center;text-align:left;padding:15px 18px;}
  .dl-btn small{text-align:right;}
  .article-main{padding:24px 18px 28px;}
  .download-wrap{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
}
@media (max-width:520px){
  .site-container{padding:0 16px;}
  .brand-text em{display:none;}
  .brand-text strong{font-size:15px;}
  .grid-2,.grid-3{grid-template-columns:1fr;}
  .article-body{font-size:16px;}
  .hero-meta{gap:8px;}
  .meta-chip{font-size:12px;padding:6px 12px;}
  .pull-quote{font-size:14.5px;padding:14px 16px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category1 */
:root{
  --bg:#050a16;
  --bg-soft:#080f22;
  --panel:rgba(255,255,255,.055);
  --panel-strong:rgba(255,255,255,.09);
  --line:rgba(120,170,255,.16);
  --line-strong:rgba(90,160,255,.45);
  --text:#e9f0fd;
  --muted:#95a8c8;
  --primary:#2f6bff;
  --cyan:#22d3ee;
  --radius-lg:20px;
  --radius:14px;
  --shadow-lg:0 22px 60px rgba(6,18,46,.6);
  --shadow-glow:0 0 34px rgba(47,107,255,.55);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(1100px 520px at 12% -8%, rgba(47,107,255,.22), transparent 62%),
    radial-gradient(900px 460px at 92% 4%, rgba(34,211,238,.12), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 22px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,10,22,.76);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;height:74px;position:relative;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  display:grid;place-items:center;
  font-weight:900;font-size:18px;color:#04101f;
  box-shadow:0 0 24px rgba(47,107,255,.55);
  flex-shrink:0;
}
.brand-text strong{display:block;font-size:16px;font-weight:800;color:#f2f7ff;letter-spacing:.03em;}
.brand-text em{display:block;font-style:normal;font-size:11px;color:#8ba1c6;letter-spacing:.18em;margin-top:2px;}
.main-nav{flex:1;min-width:0;}
.main-nav ul{display:flex;align-items:center;gap:6px;}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 15px;border-radius:11px;
  font-size:15px;font-weight:600;color:#c2d2ee;
  transition:background .22s ease,color .22s ease,box-shadow .22s ease;
}
.nav-link:hover{color:#fff;background:rgba(47,107,255,.18);}
.nav-link.active{
  color:#fff;
  background:linear-gradient(135deg,rgba(47,107,255,.42),rgba(34,211,238,.2));
  box-shadow:inset 0 0 0 1px rgba(120,170,255,.28);
}
.has-mega{position:relative;}
.chev{
  width:6px;height:6px;display:inline-block;
  border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;
  transform:rotate(45deg) translate(-1px,-1px);
}
.mega{
  position:absolute;top:calc(100% + 12px);left:0;width:520px;
  display:grid;grid-template-columns:1fr 1fr;gap:20px;
  padding:20px;
  background:rgba(9,17,34,.97);
  border:1px solid rgba(120,170,255,.22);
  border-radius:18px;
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(18px);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0);}
.mega h4{font-size:12px;letter-spacing:.16em;color:#7d93b8;font-weight:700;margin-bottom:10px;}
.mega-link{
  display:block;padding:9px 11px;border-radius:10px;
  font-size:14px;color:#cfdcf3;
  transition:background .2s ease,color .2s ease;
}
.mega-link:hover{background:rgba(47,107,255,.2);color:#fff;}
.mega-link small{display:block;font-size:12px;color:#8199bd;font-weight:400;margin-top:2px;}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.05);
  color:#dbe7ff;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:13px;
  font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-glow{
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  color:#04101f;
  box-shadow:0 10px 28px rgba(47,107,255,.32);
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow);}
.btn-glow:active{transform:translateY(0);box-shadow:0 6px 18px rgba(47,107,255,.4);}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border-color:rgba(120,170,255,.32);
  color:#dce8ff;
}
.btn-ghost:hover{background:rgba(47,107,255,.2);border-color:var(--line-strong);transform:translateY(-2px);}
.btn-block{width:100%;}

/* ---------- 区块 ---------- */
.section{padding:78px 0;position:relative;}
.section-tight{padding:58px 0;}
.section-alt{
  background:linear-gradient(180deg,rgba(11,21,44,.72),rgba(5,10,22,.1));
  border-top:1px solid rgba(120,170,255,.09);
  border-bottom:1px solid rgba(120,170,255,.09);
}
.section-head{max-width:800px;margin-bottom:38px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.12em;
  color:#9fd9ff;
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.28);
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);display:inline-block;}
.section-head h2{font-size:clamp(23px,2.7vw,33px);margin-top:16px;color:#f0f6ff;line-height:1.4;}
.section-desc{color:var(--muted);font-size:15.5px;line-height:1.95;margin-top:14px;}

/* ---------- 卡片 ---------- */
.glass-card{
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.022));
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
  min-width:0;
}
.glass-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 20px 46px rgba(8,26,68,.55);
}

/* ---------- 分类页 Hero ---------- */
.cat-hero{padding:38px 0 66px;}
.crumbs{display:flex;align-items:center;gap:9px;font-size:13px;color:#8298bb;margin-bottom:26px;flex-wrap:wrap;}
.crumbs a{color:#a9bcd9;transition:color .2s ease;}
.crumbs a:hover{color:#fff;}
.crumbs span[aria-current]{color:#dbe7ff;}
.cat-hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:34px;align-items:start;}
.cat-hero h1{font-size:clamp(28px,4vw,44px);line-height:1.28;color:#f4f8ff;margin-top:20px;letter-spacing:.01em;}
.cat-lead{color:#a8bcda;font-size:16px;line-height:1.95;margin-top:18px;max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-panel{padding:24px;}
.panel-title{font-size:14px;letter-spacing:.12em;color:#8fb4e6;font-weight:700;margin-bottom:16px;}
.param-list{display:grid;gap:14px;}
.param-list li{padding-bottom:13px;border-bottom:1px dashed rgba(120,170,255,.18);}
.param-list li:last-child{padding-bottom:0;border-bottom:0;}
.param-list strong{display:block;font-size:15px;color:#eaf3ff;font-weight:700;}
.param-list span{display:block;font-size:13.5px;color:#8fa5c7;line-height:1.75;margin-top:3px;}

/* ---------- 参数矩阵 ---------- */
.matrix-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.matrix-grid>*{min-width:0;}
.matrix-card h3{font-size:17px;color:#eef5ff;margin-bottom:10px;line-height:1.5;}
.matrix-card p{font-size:14.5px;color:#94a9c9;line-height:1.85;}
.card-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:14px;
  font-size:14px;font-weight:800;color:#9fe4ff;
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.28);
}

/* ---------- 杠杆对照 ---------- */
.lev-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.lev-grid>*{min-width:0;}
.lev-card{position:relative;overflow:hidden;}
.lev-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.1em;
  padding:5px 12px;border-radius:999px;color:#a9e9ff;
  background:rgba(47,107,255,.18);border:1px solid rgba(120,170,255,.3);
  margin-bottom:14px;
}
.lev-card h3{font-size:19px;color:#f1f7ff;margin-bottom:6px;}
.lev-sub{font-size:13px;color:#8399bb;margin-bottom:16px;}
.lev-lines{display:grid;gap:10px;}
.lev-lines li{display:flex;justify-content:space-between;gap:14px;font-size:14px;color:#b8c9e4;padding-bottom:9px;border-bottom:1px dashed rgba(120,170,255,.14);}
.lev-lines li:last-child{border-bottom:0;padding-bottom:0;}
.lev-lines b{color:#eaf3ff;font-weight:700;white-space:nowrap;}
.note-bar{
  margin-top:24px;padding:16px 20px;border-radius:var(--radius);
  background:rgba(34,211,238,.06);
  border:1px solid rgba(34,211,238,.22);
  font-size:13.5px;color:#9db4d4;line-height:1.85;
}

/* ---------- 里程碑 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.steps>*{min-width:0;}
.step-card{position:relative;padding-top:30px;}
.step-num{
  font-size:13px;font-weight:800;letter-spacing:.16em;color:#7fd6ff;
  display:block;margin-bottom:10px;
}
.step-card h3{font-size:16.5px;color:#eef5ff;margin-bottom:8px;}
.step-card p{font-size:14px;color:#93a8c8;line-height:1.85;}
.step-card::before{
  content:"";position:absolute;top:14px;left:26px;right:26px;height:1px;
  background:linear-gradient(90deg,rgba(47,107,255,.6),rgba(34,211,238,0));
}

/* ---------- 自查清单 ---------- */
.check-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:26px;align-items:start;}
.check-list{display:grid;gap:14px;}
.check-list li{
  display:flex;gap:13px;align-items:flex-start;
  padding:16px 18px;border-radius:var(--radius);
  background:rgba(255,255,255,.04);
  border:1px solid rgba(120,170,255,.14);
  font-size:14.5px;color:#b8c9e4;line-height:1.8;
}
.check-list .dot{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;
  display:grid;place-items:center;margin-top:3px;
  background:rgba(34,211,238,.14);border:1px solid rgba(34,211,238,.4);
  color:#8fe6ff;font-size:12px;font-weight:800;
}
.alert-card{
  border-color:rgba(255,170,80,.28);
  background:linear-gradient(160deg,rgba(255,170,80,.09),rgba(255,255,255,.02));
}
.alert-card h3{font-size:16px;color:#ffd9a8;margin-bottom:10px;}
.alert-card p{font-size:14px;color:#b3c2da;line-height:1.9;}

/* ---------- 术语速查 ---------- */
.term-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.term-grid>*{min-width:0;}
.term-item{padding:20px 22px;}
.term-item h3{font-size:15.5px;color:#e9f2ff;margin-bottom:6px;}
.term-item p{font-size:14px;color:#93a8c8;line-height:1.85;}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.news-grid>*{min-width:0;}
.news-card{display:flex;flex-direction:column;gap:12px;}
.news-tag{
  align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:4px 11px;border-radius:999px;color:#9fd9ff;
  background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.26);
}
.news-card h3{font-size:16.5px;color:#eef5ff;line-height:1.6;}
.news-card p{font-size:14px;color:#93a8c8;line-height:1.85;}
.news-meta{font-size:12.5px;color:#7e93b4;letter-spacing:.04em;margin-top:auto;}
.empty-note{
  padding:26px;border-radius:var(--radius);color:#93a8c8;font-size:14.5px;
  background:rgba(255,255,255,.04);border:1px dashed rgba(120,170,255,.24);
}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;gap:14px;max-width:960px;}
.faq-item{
  border:1px solid rgba(120,170,255,.16);
  border-radius:var(--radius);
  background:rgba(255,255,255,.04);
  overflow:hidden;
  transition:border-color .22s ease,background .22s ease;
}
.faq-item[open]{border-color:rgba(90,160,255,.45);background:rgba(47,107,255,.08);}
.faq-item summary{
  cursor:pointer;list-style:none;
  padding:18px 22px;font-size:15.5px;font-weight:700;color:#e7f0ff;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:400;color:#7fd6ff;flex-shrink:0;line-height:1;
}
.faq-item[open] summary::after{content:"−";}
.faq-body{padding:0 22px 20px;font-size:14.5px;color:#9db2d1;line-height:1.95;}

/* ---------- 下载区 ---------- */
.download-section{padding:74px 0 82px;}
.dl-panel{
  border-radius:26px;padding:42px;
  background:
    radial-gradient(700px 320px at 12% 0%, rgba(47,107,255,.26), transparent 60%),
    linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid rgba(120,170,255,.24);
  box-shadow:var(--shadow-lg);
}
.dl-head{max-width:720px;margin-bottom:32px;}
.dl-head h2{font-size:clamp(22px,2.6vw,30px);color:#f2f8ff;margin-top:14px;line-height:1.42;}
.dl-head p{color:#9db2d1;font-size:15px;line-height:1.9;margin-top:12px;}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.dl-grid>*{min-width:0;}
.dl-card{
  display:flex;flex-direction:column;gap:10px;
  padding:24px;border-radius:var(--radius-lg);
  background:rgba(6,13,30,.6);
  border:1px solid rgba(120,170,255,.2);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.dl-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 18px 40px rgba(6,20,52,.6);}
.dl-os{font-size:12.5px;letter-spacing:.14em;color:#82a7d8;font-weight:700;}
.dl-card h3{font-size:18px;color:#f0f7ff;}
.dl-card p{font-size:13.5px;color:#8fa5c7;line-height:1.8;margin-bottom:6px;}
.dl-card .btn{margin-top:auto;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:linear-gradient(180deg,rgba(6,12,26,.35),rgba(3,7,16,.96));
  border-top:1px solid var(--line);
  padding:58px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:15px;color:#eaf2ff;margin-bottom:14px;line-height:1.5;}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:11px;font-size:15px;}
.footer-about{color:var(--muted);font-size:13.5px;line-height:1.9;max-width:420px;}
.footer-col h4{font-size:13px;letter-spacing:.12em;color:#8ea6ca;margin-bottom:12px;font-weight:700;}
.footer-col ul{display:grid;gap:9px;}
.footer-col a{color:#c6d5ee;font-size:14px;transition:color .2s ease;}
.footer-col a:hover{color:#fff;}
.footer-note{color:#8ba0c2;font-size:13px;line-height:1.85;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:36px;padding-top:20px;
  border-top:1px solid rgba(120,170,255,.12);
  color:#7f93b4;font-size:12.5px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .header-inner{height:66px;gap:14px;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .main-nav{
    position:absolute;left:-22px;right:-22px;top:100%;
    display:none;
    background:rgba(7,13,28,.985);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 50px rgba(2,8,22,.7);
    padding:14px 22px 20px;
  }
  .main-nav.is-open{display:block;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px;}
  .nav-link{width:100%;justify-content:flex-start;}
  .mega{
    position:static;opacity:1;visibility:visible;transform:none;
    width:auto;grid-template-columns:1fr;gap:12px;
    padding:10px 0 6px;background:transparent;border:0;box-shadow:none;backdrop-filter:none;
  }
  .section{padding:60px 0;}
  .cat-hero{padding:28px 0 52px;}
  .cat-hero-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .matrix-grid,.lev-grid,.news-grid,.dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .check-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
  .dl-panel{padding:32px;}
}
@media (max-width:768px){
  .term-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:560px){
  .site-container{padding:0 16px;}
  .main-nav{left:-16px;right:-16px;padding-left:16px;padding-right:16px;}
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:10px;letter-spacing:.12em;}
  .matrix-grid,.lev-grid,.news-grid,.dl-grid,.steps,.footer-grid{grid-template-columns:minmax(0,1fr);}
  .section{padding:48px 0;}
  .glass-card{padding:20px;}
  .hero-actions .btn{width:100%;}
  .dl-panel{padding:24px 18px;border-radius:20px;}
  .faq-item summary{padding:15px 16px;font-size:14.5px;}
  .faq-body{padding:0 16px 16px;font-size:14px;}
}