/* roulang page: index */
:root{
  --bg:#05070F;
  --bg-2:#0A0F1F;
  --surface:rgba(18,26,48,.62);
  --surface-2:rgba(10,16,32,.86);
  --primary:#1FD9FF;
  --primary-2:#6E7BFF;
  --accent:#FF3D8B;
  --ok:#38F2A8;
  --text:#E8F1FF;
  --text-2:#9FB0CC;
  --text-3:#6B7C99;
  --line:rgba(120,200,255,.14);
  --line-strong:rgba(31,217,255,.42);
  --r-card:14px;
  --r-glass:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 10px 30px rgba(3,8,20,.55);
  --sh-card-hover:0 18px 44px rgba(3,8,20,.7);
  --sh-glow:0 0 0 1px rgba(31,217,255,.5) inset,0 8px 26px rgba(31,217,255,.28);
  --ease:.22s ease;
  --maxw:1240px;
}
*,*::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:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--text)}
p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}
.section{padding:88px 0}
.section-alt{background:var(--bg-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:30px;letter-spacing:.2px}
.section-head .sub{color:var(--text-2);font-size:15px;margin-top:8px;max-width:620px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);letter-spacing:1.6px;text-transform:uppercase;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--primary),transparent)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  border:1px solid transparent;
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#04121C;
  box-shadow:var(--sh-glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(31,217,255,.6) inset,0 14px 34px rgba(31,217,255,.34)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{border-color:var(--line-strong);color:var(--primary);background:rgba(31,217,255,.06)}
.btn-outline:hover{background:rgba(31,217,255,.14);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{color:var(--text-2);padding:0 6px;height:auto}
.btn-ghost:hover{color:var(--primary)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:50px;padding:0 26px;font-size:16px}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}

/* 徽章标签 */
.pill{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 14px;border-radius:999px;border:1px solid var(--line-strong);color:var(--primary);font-size:13px;background:rgba(31,217,255,.07)}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;border:1px solid var(--line);color:var(--text-2);font-size:13px}
.tag-hot{background:var(--accent);border-color:var(--accent);color:#fff}
.tag-ok{border-color:rgba(56,242,168,.45);color:var(--ok);background:rgba(56,242,168,.08)}

/* 顶部通栏 */
.topbar{background:var(--bg-2);border-bottom:1px solid var(--line);font-size:13px}
.topbar-inner{height:40px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-tip{display:inline-flex;align-items:center;gap:8px;color:var(--text-2)}
.topbar-tip .dot{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 8px var(--ok)}
.topbar-link{color:var(--primary)}
.topbar-link:hover{text-decoration:underline}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,7,15,.84);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.site-header::after{content:"";display:block;height:1px;background:linear-gradient(90deg,rgba(31,217,255,.4),rgba(110,123,255,.35),rgba(31,217,255,0))}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{width:34px;height:34px;border-radius:9px;border:1px solid var(--line-strong);display:grid;place-items:center;background:rgba(31,217,255,.08);box-shadow:0 0 18px rgba(31,217,255,.2)}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text strong{font-size:17px;letter-spacing:.5px}
.logo-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:1.2px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:9px;font-size:15px;color:var(--text-2);transition:color var(--ease),background var(--ease)}
.nav-link:hover{color:var(--text);background:rgba(31,217,255,.05)}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--primary-2));opacity:0;transition:opacity var(--ease)}
.nav-link:hover::after{opacity:.6}
.nav-link.active{color:var(--text);background:rgba(31,217,255,.08)}
.nav-link.active::after{opacity:1;box-shadow:0 0 12px rgba(31,217,255,.75)}
.nav-right{display:flex;align-items:center;gap:12px}
.menu-toggle{display:none;width:40px;height:40px;border-radius:9px;border:1px solid var(--line);place-items: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}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;width:82vw;max-width:340px;height:100vh;z-index:120;
  background:var(--surface-2);border-left:1px solid var(--line);
  padding:24px 22px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(102%);transition:transform .26s ease;backdrop-filter:blur(16px);
}
.drawer.open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(2,5,12,.6);z-index:110;opacity:0;pointer-events:none;transition:opacity .26s ease}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer-title{font-size:12px;color:var(--text-3);letter-spacing:1.4px;margin:14px 0 4px}
.drawer a.drawer-link{display:flex;align-items:center;height:52px;padding:0 14px;border-radius:10px;color:var(--text-2);border:1px solid transparent}
.drawer a.drawer-link:hover{background:rgba(31,217,255,.07);color:var(--text)}
.drawer a.drawer-link.active{color:var(--text);background:rgba(31,217,255,.1);border-color:var(--line-strong)}
.drawer .btn{margin-top:auto;width:100%;height:48px}
.fab{position:fixed;right:18px;bottom:22px;width:52px;height:52px;border-radius:50%;display:none;place-items:center;z-index:90;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));box-shadow:var(--sh-glow);color:#04121C;font-size:20px}

/* Hero */
.hero{position:relative;overflow:hidden;padding:72px 0 84px;background:var(--bg)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(5,7,15,.82),rgba(5,7,15,.94)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(120,200,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(120,200,255,.055) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 72%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center}
.hero-copy h1{font-size:44px;line-height:1.24;letter-spacing:.3px;margin:16px 0 18px;max-width:660px}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;line-height:1.8}
.hero-actions{display:flex;gap:14px;margin:30px 0 24px;flex-wrap:wrap}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap}
.hero-badges li{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2);border:1px solid var(--line);border-radius:999px;padding:5px 14px;background:rgba(255,255,255,.02)}
.hero-badges li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px var(--primary)}

.hero-card{
  position:relative;border-radius:var(--r-glass);border:1px solid var(--line);
  background:var(--surface);backdrop-filter:blur(16px);padding:26px;box-shadow:var(--sh-card);
}
.hero-card::before{content:"";position:absolute;inset:0;border-radius:var(--r-glass);background:linear-gradient(180deg,rgba(31,217,255,.1),transparent 42%);pointer-events:none}
.hero-card .hc-label{font-size:13px;color:var(--text-3);letter-spacing:1px}
.hero-card .hc-version{font-size:48px;font-weight:700;line-height:1.1;margin:6px 0 4px;background:linear-gradient(120deg,var(--primary),var(--primary-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-card .hc-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0}
.hero-card .hc-cell{border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:rgba(255,255,255,.02)}
.hero-card .hc-cell span{display:block;font-size:12px;color:var(--text-3)}
.hero-card .hc-cell strong{font-size:16px}
.hero-card .hc-platforms{display:flex;gap:10px;margin-bottom:18px}
.hero-card .hc-platforms i{display:grid;place-items:center;width:38px;height:38px;border-radius:9px;border:1px solid var(--line);color:var(--primary);font-style:normal;font-size:12px}
.hero-card .btn{width:100%}

/* 平台适配条 */
.platform-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.platform-card{display:flex;gap:14px;align-items:flex-start;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;background:var(--surface);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease)}
.platform-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--sh-card-hover)}
.platform-card .pc-icon{width:40px;height:40px;flex:none;border-radius:10px;display:grid;place-items:center;border:1px solid var(--line-strong);color:var(--primary);font-size:13px;background:rgba(31,217,255,.07)}
.platform-card h3{font-size:17px;margin-bottom:4px}
.platform-card p{font-size:14px;color:var(--text-2)}

/* 卡片网格 */
.card{position:relative;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);overflow:hidden;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease)}
.card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--sh-card-hover)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-media .badge{position:absolute;top:12px;left:12px}
.card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.7}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:4px}
.card-meta{font-size:13px;color:var(--text-3)}
.grid-hero{display:grid;grid-template-columns:2fr 1fr 1fr;gap:18px;margin-bottom:18px}
.grid-mid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card-lg .card-media{aspect-ratio:16/9}
.card-lg .card-body h3{font-size:22px}
.card-lg .card-body p{font-size:15px}

/* 评价轮播 */
.reviews{position:relative}
.review-track{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;scrollbar-width:none}
.review-track::-webkit-scrollbar{display:none}
.review-card{flex:0 0 320px;scroll-snap-align:start;border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);padding:20px;box-shadow:var(--sh-card)}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(120deg,var(--primary),var(--primary-2));display:grid;place-items:center;color:#04121C;font-weight:700;font-size:15px}
.review-head .rn{font-size:15px}
.review-head .rs{font-size:13px;color:var(--text-3)}
.stars{color:var(--accent);font-size:13px;letter-spacing:2px;margin-bottom:8px}
.review-card p{font-size:14px;color:var(--text-2)}
.review-nav{display:flex;align-items:center;gap:12px;margin-top:20px}
.review-nav button{width:40px;height:40px;border-radius:50%;border:1px solid var(--line-strong);color:var(--primary);display:grid;place-items:center;transition:background var(--ease)}
.review-nav button:hover{background:rgba(31,217,255,.12)}
.dots{display:flex;gap:6px;margin-left:6px}
.dots i{width:7px;height:7px;border-radius:50%;background:var(--line);display:block;transition:background var(--ease),transform var(--ease)}
.dots i.on{background:var(--primary);transform:scale(1.25);box-shadow:0 0 10px var(--primary)}

/* 保障条 */
.guard{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:40px 0}
.guard-item{display:flex;align-items:center;gap:14px}
.guard-item .gi{width:44px;height:44px;flex:none;border-radius:12px;border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--primary);font-size:15px;box-shadow:0 0 16px rgba(31,217,255,.16)}
.guard-item strong{display:block;font-size:16px}
.guard-item span{font-size:13px;color:var(--text-2)}

/* 资讯列表 */
.news-wrap{display:grid;grid-template-columns:3fr 9fr;gap:40px}
.news-list{border-top:1px solid var(--line)}
.news-item{display:flex;gap:20px;align-items:flex-start;justify-content:space-between;padding:20px 12px;border-bottom:1px solid var(--line);transition:background var(--ease)}
.news-item:hover{background:rgba(31,217,255,.05)}
.news-item h3{font-size:17px;margin-bottom:6px}
.news-item:hover h3 a{color:var(--primary)}
.news-item p{font-size:14px;color:var(--text-2);max-width:720px}
.news-meta{display:flex;flex-direction:column;align-items:flex-end;gap:8px;flex:none;font-size:13px;color:var(--text-3);white-space:nowrap}
.empty-state{display:grid;place-items:center;gap:14px;text-align:center;padding:64px 20px;border:1px dashed var(--line-strong);border-radius:var(--r-card);background:var(--surface-2)}
.empty-state .ico{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;border:1px solid var(--line-strong);color:var(--primary);font-size:20px}
.empty-state p{color:var(--text-2);font-size:15px}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);overflow:hidden;transition:border-color var(--ease)}
.faq-item.open{border-color:var(--line-strong)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;font-size:16px;font-weight:600;text-align:left}
.faq-q .sign{position:relative;width:20px;height:20px;flex:none}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;left:2px;top:9px;width:16px;height:2px;background:var(--primary);border-radius:2px;transition:transform var(--ease)}
.faq-q .sign::after{transform:rotate(90deg)}
.faq-item.open .sign::after{transform:rotate(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{padding:0 20px 20px;color:var(--text-2);font-size:15px;line-height:1.8}

/* CTA */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-glass);border:1px solid var(--line-strong);padding:44px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(90deg,rgba(5,7,15,.9),rgba(5,7,15,.78)),url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:28px;margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px;max-width:620px}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:72px 0 44px}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:14px;max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;color:var(--text-2);font-size:13px;transition:border-color var(--ease),color var(--ease)}
.footer-social a:hover{border-color:var(--line-strong);color:var(--primary)}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:var(--text-2);padding:6px 0;transition:color var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-3)}

/* 响应式 */
@media (max-width:1279px){
  .section{padding:64px 0}
  .hero-copy h1{font-size:38px}
  .container{padding:0 26px}
}
@media (max-width:1023px){
  .platform-grid{grid-template-columns:repeat(2,1fr)}
  .grid-hero{grid-template-columns:1fr 1fr}
  .card-lg{grid-column:span 2}
  .grid-mid{grid-template-columns:repeat(2,1fr)}
  .news-wrap{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-links{display:none}
  .menu-toggle{display:grid}
  .guard-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-copy h1{font-size:32px}
}
@media (max-width:767px){
  body{font-size:15px}
  .container{padding:0 20px}
  .section{padding:44px 0}
  .hero{padding:48px 0 56px}
  .hero-copy h1{font-size:28px}
  .hero-actions .btn{width:100%}
  .section-head h2{font-size:22px}
  .grid-hero,.grid-mid{grid-template-columns:1fr}
  .card-lg{grid-column:auto}
  .cta-band{padding:28px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 32px}
  .nav-right .btn{display:none}
  .topbar-inner{height:auto;padding:8px 0;flex-direction:column;align-items:flex-start;gap:4px}
  .fab{display:grid}
  .review-card{flex:0 0 82%}
  .news-item{flex-direction:column;gap:10px}
  .news-meta{flex-direction:row;align-items:center}
}
@media (max-width:420px){
  .hero-copy h1{font-size:25px}
  .card-body h3{font-size:17px}
  .btn-lg{height:48px;font-size:15px}
}

/* roulang page: category1 */
:root{
  --bg:#05070F;
  --bg-2:#0A0F1F;
  --surface:rgba(18,26,48,.62);
  --surface-2:rgba(10,16,32,.86);
  --primary:#1FD9FF;
  --primary-2:#6E7BFF;
  --accent:#FF3D8B;
  --ok:#38F2A8;
  --text:#E8F1FF;
  --text-2:#9FB0CC;
  --text-3:#6B7C99;
  --line:rgba(120,200,255,.14);
  --line-strong:rgba(31,217,255,.42);
  --radius:14px;
  --radius-lg:16px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(3,8,20,.55);
  --shadow-hover:0 18px 44px rgba(3,8,20,.7);
  --glow:0 0 0 1px rgba(31,217,255,.5), 0 8px 26px rgba(31,217,255,.28);
  --t:.22s ease;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding-top:68px;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text-2);
  background:var(--bg);
  background-image:
    radial-gradient(900px 520px at 82% -8%, rgba(31,217,255,.16), transparent 62%),
    radial-gradient(760px 460px at 6% 12%, rgba(110,123,255,.14), transparent 60%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color var(--t),opacity var(--t)}
a:hover{color:#7FE9FF}
h1,h2,h3,h4{color:var(--text);margin:0;font-weight:700;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t),opacity var(--t);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#04101C;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(31,217,255,.6),0 14px 34px rgba(31,217,255,.34);color:#04101C}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,217,255,.45),0 6px 18px rgba(31,217,255,.22)}
.btn-ghost{
  background:transparent;color:var(--primary);
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{background:rgba(31,217,255,.08);color:var(--text);transform:translateY(-2px);border-color:var(--primary)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;
  font-size:13px;line-height:1.4;
  border:1px solid var(--line);
  color:var(--text-2);
  background:rgba(255,255,255,.03);
}
.badge-hot{background:var(--accent);border-color:var(--accent);color:#12040C;font-weight:700}
.badge-ok{border-color:rgba(56,242,168,.42);color:var(--ok)}
.badge-mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.4px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:68px;
  background:rgba(5,7,15,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,217,255,.4),rgba(110,123,255,.34),transparent);
}
.header-inner{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text)}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:rgba(31,217,255,.08);
  border:1px solid var(--line-strong);
  box-shadow:0 0 18px rgba(31,217,255,.22) inset;
}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text strong{font-size:17px;font-weight:700;color:var(--text)}
.logo-text em{font-style:normal;font-size:11px;letter-spacing:1.6px;color:var(--text-3);text-transform:uppercase}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:38px;padding:0 14px;border-radius:8px;
  font-size:15px;color:var(--text-2);
  transition:color var(--t),background var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--primary-2));
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-link:hover{color:var(--text);background:rgba(31,217,255,.06)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{
  color:var(--text);
  background:rgba(31,217,255,.08);
  box-shadow:0 0 16px rgba(31,217,255,.16) inset;
}
.nav-link.active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(31,217,255,.75)}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  align-items:center;justify-content: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}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;z-index:200;
  width:82vw;max-width:360px;height:100%;
  background:var(--bg-2);
  border-left:1px solid var(--line);
  transform:translateX(105%);
  transition:transform .28s ease;
  display:flex;flex-direction:column;
  padding:22px 22px 26px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-close{align-self:flex-end;font-size:22px;color:var(--text-2);padding:4px 8px}
.drawer-group{margin-top:22px}
.drawer-group h5{
  margin:0 0 8px;font-size:12px;letter-spacing:1.4px;
  color:var(--text-3);font-weight:600;text-transform:uppercase;
}
.drawer a.drawer-link{
  display:flex;align-items:center;height:52px;padding:0 14px;
  border-radius:10px;color:var(--text-2);font-size:16px;
  border:1px solid transparent;
}
.drawer a.drawer-link:hover{background:rgba(31,217,255,.07);color:var(--text)}
.drawer a.drawer-link.active{
  color:var(--text);background:rgba(31,217,255,.1);
  border-color:var(--line-strong);box-shadow:0 0 18px rgba(31,217,255,.16) inset;
}
.drawer-foot{margin-top:auto;padding-top:26px}
.overlay{
  position:fixed;inset:0;z-index:150;
  background:rgba(3,6,14,.68);
  opacity:0;pointer-events:none;transition:opacity .28s ease;
}
.overlay.show{opacity:1;pointer-events:auto}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:26px 0 0;font-size:13px;color:var(--text-3);
}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(107,124,153,.6)}
.breadcrumb .current{color:var(--text-2)}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;
  padding:34px 0 64px;
  background-image:
    linear-gradient(180deg,rgba(5,7,15,.82),rgba(5,7,15,.94)),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.hero-cat::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(120,200,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,200,255,.055) 1px,transparent 1px);
  background-size:38px 38px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:48px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
  font-size:13px;color:var(--primary);
  border:1px solid var(--line-strong);
  background:rgba(31,217,255,.07);
}
.eyebrow .dot{
  width:7px;height:7px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 10px rgba(56,242,168,.9);
}
h1{font-size:44px;letter-spacing:-.4px;line-height:1.28}
h1 .hl{
  background:linear-gradient(96deg,var(--primary),var(--primary-2) 62%,var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:560px}
.hero-note{margin-top:14px;font-size:14px;color:var(--text-3)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

.hero-panel{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--surface);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  padding:24px;
  box-shadow:var(--shadow);
}
.hero-panel::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);pointer-events:none;
  box-shadow:0 1px 0 rgba(255,255,255,.06) inset;
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.panel-head h3{font-size:17px}
.panel-cover{
  border-radius:12px;overflow:hidden;
  aspect-ratio:16/9;border:1px solid var(--line);
  margin-bottom:18px;
}
.panel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.hero-panel:hover .panel-cover img{transform:scale(1.04)}
.spec-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.spec{
  border:1px solid var(--line);border-radius:12px;
  padding:12px 14px;background:rgba(255,255,255,.02);
}
.spec dt{font-size:12px;color:var(--text-3);margin-bottom:4px}
.spec dd{
  margin:0;font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:16px;color:var(--text);font-weight:600;letter-spacing:.3px;
}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:30px}
.section-head p{margin-top:14px;font-size:16px;color:var(--text-2)}
.sec-tag{
  display:inline-block;margin-bottom:14px;
  font-family:var(--mono);font-size:12px;letter-spacing:2px;
  color:var(--primary);text-transform:uppercase;
}

/* ---------- 平台标签条 ---------- */
.platform-tabs{
  display:flex;flex-wrap:wrap;gap:10px;
  padding:8px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(10,16,32,.6);
  width:fit-content;
  margin-bottom:34px;
}
.tab{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 22px;border-radius:999px;
  font-size:15px;color:var(--text-2);
  border:1px solid transparent;
  transition:all var(--t);
}
.tab:hover{color:var(--text);background:rgba(31,217,255,.07)}
.tab.active{
  color:#04101C;font-weight:700;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  box-shadow:var(--glow);
}
.tab span.num{font-family:var(--mono);font-size:13px;opacity:.8}

/* ---------- 下载卡组：1 大 + 2 小 ---------- */
.download-layout{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:24px}
.dl-main{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(31,217,255,.1),rgba(18,26,48,.72) 46%,rgba(10,16,32,.9));
  box-shadow:var(--shadow),0 0 34px rgba(31,217,255,.12);
  padding:28px;
  overflow:hidden;
}
.dl-main::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(120,200,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,200,255,.06) 1px,transparent 1px);
  background-size:30px 30px;
  mask-image:radial-gradient(360px 240px at 88% 0%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(360px 240px at 88% 0%,#000,transparent 78%);
}
.dl-main-inner{position:relative;z-index:1}
.dl-main h3{font-size:20px;margin-bottom:6px}
.dl-main .dl-lead{font-size:14px;color:var(--text-3);margin-bottom:22px}
.version-block{
  display:flex;align-items:baseline;gap:12px;
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  margin-bottom:20px;
}
.version-block .vn{
  font-size:44px;font-weight:700;letter-spacing:-1px;
  background:linear-gradient(96deg,var(--primary),var(--primary-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.version-block .vlabel{font-size:13px;color:var(--text-3);font-family:var(--font)}
.dl-main .spec-list{grid-template-columns:repeat(3,minmax(0,1fr));margin-bottom:24px}
.dl-main-foot{display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.qr-box{
  width:104px;height:104px;flex:0 0 104px;
  border-radius:12px;border:1px dashed var(--line-strong);
  background:repeating-conic-gradient(rgba(31,217,255,.16) 0 25%,rgba(10,16,32,.6) 0 50%) 0 0/14px 14px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--text-3);text-align:center;line-height:1.5;
}
.dl-side{display:grid;gap:24px;align-content:start}
.dl-card{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.dl-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.dl-card .thumb{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line)}
.dl-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.dl-card:hover .thumb img{transform:scale(1.03)}
.dl-card-body{padding:18px 20px 20px}
.dl-card-body h3{font-size:17px;margin-bottom:8px}
.dl-card-body p{font-size:14px;color:var(--text-2);margin-bottom:14px}
.dl-meta{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:13px;color:var(--text-3);margin-bottom:16px;
}
.dl-meta .dot-sep{width:4px;height:4px;border-radius:50%;background:rgba(107,124,153,.55)}

/* ---------- 保障条 ---------- */
.assure{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;
}
.assure-item{
  background:var(--bg-2);
  padding:26px 22px;
  display:flex;flex-direction:column;gap:10px;
  transition:background var(--t);
}
.assure-item:hover{background:rgba(31,217,255,.06)}
.assure-item .ico{
  width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);
}
.assure-item h3{font-size:16px}
.assure-item p{font-size:13px;color:var(--text-3)}

/* ---------- 适用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.scene-card{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--surface);
  padding:26px 24px;
  box-shadow:var(--shadow);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.scene-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.scene-card .idx{
  font-family:var(--mono);font-size:13px;color:var(--accent);
  letter-spacing:1.6px;margin-bottom:14px;display:block;
}
.scene-card h3{font-size:18px;margin-bottom:10px}
.scene-card p{font-size:14px;color:var(--text-2)}

/* ---------- 安装流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.flow-step{
  position:relative;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--surface-2);
  padding:24px 22px;
}
.flow-step .step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:16px;
  font-family:var(--mono);font-weight:700;font-size:14px;
  color:#04101C;background:linear-gradient(120deg,var(--primary),var(--primary-2));
  box-shadow:0 6px 18px rgba(31,217,255,.24);
}
.flow-step h3{font-size:17px;margin-bottom:8px}
.flow-step p{font-size:14px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--surface);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--t),background var(--t);
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item[open]{background:var(--surface-2);border-color:var(--line-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
  transition:transform .24s ease,opacity .24s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-answer{padding:0 22px 20px;font-size:15px;color:var(--text-2);line-height:1.85;animation:fadeUp .26s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  overflow:hidden;
  background-image:
    linear-gradient(90deg,rgba(5,7,15,.88),rgba(5,7,15,.72)),
    url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  box-shadow:var(--shadow);
}
.cta-band-inner{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  padding:44px 40px;
}
.cta-band h2{font-size:28px;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;color:var(--primary);
  border-bottom:1px solid rgba(31,217,255,.4);
  padding-bottom:2px;
}
.link-arrow:hover{gap:10px;color:#7FE9FF}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:var(--bg-2);
  border-top:1px solid var(--line);
  padding:72px 0 26px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
}
.footer-brand p{font-size:14px;color:var(--text-3);margin-top:16px;max-width:320px;line-height:1.8}
.footer-social{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.footer-social a{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.footer-social a:hover{border-color:var(--line-strong);color:var(--text);background:rgba(31,217,255,.06)}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-col a{
  display:block;font-size:14px;color:var(--text-3);
  padding:7px 0;transition:color var(--t),transform var(--t);
}
.footer-col a:hover{color:var(--primary);transform:translateX(3px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:52px;padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-grid{gap:34px}
  h1{font-size:38px}
  .download-layout{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr)}
}
@media (max-width:1023px){
  body{padding-top:64px}
  .site-header,.header-inner{height:64px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:64px 0}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  h1{font-size:32px}
  .section-head h2,.cta-band h2{font-size:24px}
  .download-layout{grid-template-columns:1fr}
  .dl-main .spec-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .assure{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  body{padding-top:56px}
  .site-header,.header-inner{height:56px}
  .logo-text em{display:none}
  .header-actions .btn{display:none}
  .hero-cat{padding:24px 0 44px}
  .breadcrumb{padding-top:18px}
  h1{font-size:28px;line-height:1.32}
  .hero-sub{font-size:15px}
  .hero-actions .btn{width:100%}
  .section{padding:44px 0}
  .section-head{margin-bottom:26px}
  .section-head h2,.cta-band h2{font-size:22px}
  .spec-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .dl-main .spec-list{grid-template-columns:1fr 1fr}
  .version-block .vn{font-size:34px}
  .dl-main-foot{flex-direction:column;align-items:flex-start}
  .qr-box{width:92px;height:92px;flex:0 0 92px}
  .scene-grid,.flow,.assure{grid-template-columns:1fr}
  .assure{gap:1px}
  .platform-tabs{width:100%;justify-content:space-between}
  .tab{padding:0 14px;font-size:14px;flex:1;justify-content:center}
  .cta-band-inner{padding:30px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .site-footer{margin-top:44px;padding-top:48px}
}
@media (max-width:420px){
  .tab span.num{display:none}
  .dl-main{padding:20px}
  .spec-list{grid-template-columns:1fr}
  .dl-main .spec-list{grid-template-columns:1fr}
}

/* roulang page: article */
:root{
  --bg:#05070F;
  --bg-2:#0A0F1F;
  --surface:rgba(18,26,48,.62);
  --surface-2:rgba(10,16,32,.86);
  --primary:#1FD9FF;
  --primary-2:#6E7BFF;
  --accent:#FF3D8B;
  --ok:#38F2A8;
  --text:#E8F1FF;
  --text-2:#9FB0CC;
  --text-3:#6B7C99;
  --line:rgba(120,200,255,.14);
  --line-strong:rgba(31,217,255,.42);
  --radius:14px;
  --radius-lg:16px;
  --radius-sm:10px;
  --radius-img:12px;
  --shadow:0 10px 30px rgba(3,8,20,.55);
  --shadow-hover:0 18px 44px rgba(3,8,20,.7);
  --glow:0 0 0 1px rgba(31,217,255,.5), 0 8px 26px rgba(31,217,255,.28);
  --tr:.22s ease;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"JetBrains Mono","Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  background-image:
    radial-gradient(900px 480px at 12% -6%,rgba(31,217,255,.10),transparent 62%),
    radial-gradient(760px 420px at 88% 4%,rgba(110,123,255,.10),transparent 60%),
    linear-gradient(rgba(31,217,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(31,217,255,.028) 1px,transparent 1px);
  background-size:auto,auto,46px 46px,46px 46px;
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--primary);text-decoration:none;transition:color var(--tr),opacity var(--tr)}
a:hover{color:#8CE9FF}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:rgba(31,217,255,.28);color:#fff}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,22,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,217,255,.38),rgba(110,123,255,.34),transparent);
}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text)}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;
  border-radius:9px;background:rgba(31,217,255,.08);
  border:1px solid var(--line-strong);
  box-shadow:0 0 16px rgba(31,217,255,.18) inset;
}
.logo-text{display:flex;flex-direction:column;line-height:1.12}
.logo-text strong{font-size:16px;font-weight:700;letter-spacing:.02em}
.logo-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.12em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:9px;font-size:15px;color:var(--text-2);transition:all var(--tr)
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  opacity:0;transform:scaleX(.4);transition:all var(--tr)
}
.nav-link:hover{color:var(--text);background:rgba(31,217,255,.06)}
.nav-link:hover::after{opacity:.7;transform:scaleX(1)}
.nav-link.active{
  color:var(--text);background:rgba(31,217,255,.08);
  box-shadow:0 0 0 1px rgba(31,217,255,.22) inset
}
.nav-link.active::after{opacity:1;transform:scaleX(1);box-shadow:0 0 12px rgba(31,217,255,.7)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px
}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-2)}
.menu-toggle:hover{border-color:var(--line-strong)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:600;letter-spacing:.02em;
  transition:transform var(--tr),box-shadow var(--tr),background var(--tr),color var(--tr),border-color var(--tr);
  white-space:nowrap
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  color:#03121A;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  box-shadow:var(--glow)
}
.btn-primary:hover{color:#03121A;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(31,217,255,.6),0 14px 34px rgba(31,217,255,.34)}
.btn-ghost{
  color:var(--primary);border:1px solid var(--line-strong);background:rgba(31,217,255,.04)
}
.btn-ghost:hover{color:#9CF0FF;background:rgba(31,217,255,.10);transform:translateY(-2px)}
.btn-text{color:var(--primary);padding:0 4px;height:auto;font-weight:600}
.btn-text:hover{color:#9CF0FF;text-decoration:underline;text-underline-offset:4px}
.btn-sm{height:38px;padding:0 16px;font-size:13px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;z-index:90;width:82vw;max-width:360px;height:100%;
  background:var(--surface-2);border-left:1px solid var(--line);
  transform:translateX(104%);transition:transform .26s ease;
  padding:22px 20px;display:flex;flex-direction:column;gap:6px;overflow-y:auto
}
.drawer.open{transform:translateX(0)}
.drawer-title{font-size:12px;color:var(--text-3);letter-spacing:.16em;margin:14px 0 4px}
.drawer a{display:flex;align-items:center;height:52px;padding:0 12px;border-radius:10px;color:var(--text-2);font-size:15px}
.drawer a:hover,.drawer a.active{color:var(--text);background:rgba(31,217,255,.08)}
.drawer .btn{margin-top:auto}
.drawer-mask{
  position:fixed;inset:0;z-index:80;background:rgba(3,6,14,.66);backdrop-filter:blur(2px);
  opacity:0;pointer-events:none;transition:opacity .26s ease
}
.drawer-mask.open{opacity:1;pointer-events:auto}

/* ---------- 页面头 ---------- */
.page-head{
  position:relative;padding:40px 0 8px;overflow:hidden
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.24;filter:saturate(.9)
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.62),rgba(5,7,15,.94) 66%,var(--bg));
}
.page-head .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--text-3);opacity:.7}
.crumbs .now{color:var(--text-2)}
.article-head{margin-top:18px;max-width:920px}
.article-head h1{
  font-size:44px;line-height:1.28;letter-spacing:.005em;
  text-wrap:balance
}
.article-head h1::after{
  content:"";display:block;width:92px;height:3px;margin-top:18px;border-radius:3px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2),transparent)
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;
  margin-top:18px;font-size:13px;color:var(--text-3)
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.7}
.tag-pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;color:var(--primary);border:1px solid var(--line-strong);background:rgba(31,217,255,.06)
}
.tag-pill.accent{color:#FFD8E7;border-color:rgba(255,61,139,.5);background:rgba(255,61,139,.16)}
.tag-pill.ok{color:#CFFBEA;border-color:rgba(56,242,168,.42);background:rgba(56,242,168,.12)}

/* ---------- 布局 ---------- */
.article-wrap{padding:44px 0 88px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.reader{
  max-width:800px;width:100%;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  padding:40px 44px 44px;
  position:relative;
  overflow:hidden
}
.reader::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,217,255,.5),transparent)
}
.lead{
  font-size:16px;color:var(--text-2);line-height:1.85;
  padding-bottom:22px;margin-bottom:26px;border-bottom:1px dashed var(--line)
}

/* ---------- 正文排版 ---------- */
.article-cms{font-size:16px;line-height:1.85;color:var(--text-2)}
.article-cms>*+*{margin-top:1.1em}
.article-cms p{color:var(--text-2)}
.article-cms strong{color:var(--text)}
.article-cms a{color:var(--primary);border-bottom:1px solid rgba(31,217,255,.35)}
.article-cms h2{
  position:relative;margin-top:2.1em;margin-bottom:.7em;padding-left:14px;
  font-size:30px;color:var(--text);line-height:1.35
}
.article-cms h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--primary-2));
  box-shadow:0 0 12px rgba(31,217,255,.6)
}
.article-cms h3{margin-top:1.7em;margin-bottom:.5em;font-size:20px;color:var(--text)}
.article-cms h4{margin-top:1.4em;margin-bottom:.4em;font-size:17px;color:var(--text)}
.article-cms ul,.article-cms ol{padding-left:1.4em;margin:1em 0}
.article-cms ul li{list-style:none;position:relative;padding-left:6px;margin:.5em 0}
.article-cms ul li::before{
  content:"";position:absolute;left:-1.1em;top:.72em;width:6px;height:6px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px rgba(31,217,255,.7)
}
.article-cms ol{counter-reset:n}
.article-cms ol li{list-style:none;position:relative;padding-left:6px;margin:.5em 0;counter-increment:n}
.article-cms ol li::before{
  content:counter(n);
  position:absolute;left:-1.6em;top:.2em;width:20px;height:20px;border-radius:6px;
  display:grid;place-items:center;font-size:12px;font-family:var(--mono);
  color:var(--primary);border:1px solid var(--line-strong);background:rgba(31,217,255,.07)
}
.article-cms blockquote{
  margin:1.4em 0;padding:16px 20px;border-radius:var(--radius);
  background:var(--surface);border-left:3px solid var(--primary);
  color:var(--text-2);font-size:15.5px
}
.article-cms img{border-radius:var(--radius-img);margin:1.4em 0;width:100%;height:auto}
.article-cms table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
.article-cms .table-scroll,.article-cms figure{overflow-x:auto;margin:1.4em 0}
.article-cms th,.article-cms td{padding:12px 14px;border:1px solid var(--line);text-align:left}
.article-cms th{background:rgba(31,217,255,.07);color:var(--text);font-weight:600}
.article-cms tr:nth-child(even) td{background:rgba(255,255,255,.02)}
.article-cms hr{border:0;border-top:1px dashed var(--line);margin:2em 0}
.article-cms code{
  font-family:var(--mono);font-size:14px;color:#9CF0FF;
  background:rgba(31,217,255,.10);border:1px solid var(--line);border-radius:6px;padding:2px 6px
}

/* ---------- 文中版本卡 ---------- */
.inline-card{
  display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;
  margin:34px 0;padding:22px 24px;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,rgba(31,217,255,.12),rgba(110,123,255,.10));
  border:1px solid var(--line-strong);
  box-shadow:0 12px 34px rgba(3,8,20,.5)
}
.inline-card h3{font-size:18px;color:var(--text);margin-bottom:6px}
.inline-card p{font-size:14px;color:var(--text-2)}
.inline-card .ver{font-size:26px;color:var(--primary);font-family:var(--mono);font-variant-numeric:tabular-nums}
.inline-card .ver small{font-size:12px;color:var(--text-3);margin-left:8px;font-family:var(--font)}

/* ---------- 空态 ---------- */
.empty-state{
  padding:48px 20px;text-align:center;border-radius:var(--radius);
  background:var(--surface-2);border:1px dashed var(--line-strong)
}
.empty-state .ico{
  width:52px;height:52px;margin:0 auto 16px;border-radius:14px;display:grid;place-items:center;
  color:var(--primary);border:1px solid var(--line-strong);background:rgba(31,217,255,.07);font-size:22px
}
.empty-state p{color:var(--text-2);margin-bottom:18px}

/* ---------- 标签 / 分享 ---------- */
.post-foot{margin-top:38px;padding-top:24px;border-top:1px solid var(--line)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px;font-size:13px;color:var(--text-3)}
.share-row .btn{margin-left:auto}

/* ---------- 侧栏 ---------- */
.side{display:flex;flex-direction:column;gap:18px;position:sticky;top:92px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:20px
}
.side-card h3{font-size:15px;color:var(--text);margin-bottom:14px;letter-spacing:.04em}
.side-card h3::after{content:"";display:block;width:34px;height:2px;margin-top:8px;border-radius:2px;background:linear-gradient(90deg,var(--primary),transparent)}
.side-list li+li{border-top:1px solid var(--line)}
.side-list a{display:flex;align-items:center;gap:10px;padding:12px 0;font-size:14px;color:var(--text-2)}
.side-list a:hover{color:var(--primary);padding-left:4px}
.side-list a .idx{font-family:var(--mono);font-size:12px;color:var(--text-3)}
.dl-card .ver{font-size:30px;color:var(--primary);font-family:var(--mono);font-variant-numeric:tabular-nums;display:block;margin:10px 0 4px}
.dl-card p{font-size:13px;color:var(--text-3);margin-bottom:16px}
.dl-card .badge-line{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- 相关推荐 ---------- */
.recommend{padding:0 0 88px}
.sec-title{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.sec-title h2{font-size:30px}
.sec-title p{font-size:14px;color:var(--text-3);margin-top:8px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr)
}
.card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover),0 0 24px rgba(31,217,255,.14)}
.card .thumb{margin:0;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;aspect-ratio:16/9;background:var(--bg-2)}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--tr)}
.card:hover .thumb img{transform:scale(1.03)}
.card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card h3{font-size:17px;line-height:1.5}
.card h3 a{color:var(--text)}
.card h3 a:hover{color:var(--primary)}
.card p{font-size:14px;color:var(--text-2);line-height:1.7}
.card .meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-top:auto}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;margin-bottom:88px;border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  box-shadow:0 22px 60px rgba(3,8,20,.6)
}
.cta-band .bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center
}
.cta-band .veil{
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(5,7,15,.92),rgba(10,16,32,.86) 55%,rgba(31,217,255,.16));
  backdrop-filter:blur(1px)
}
.cta-band .inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;
  padding:38px 40px
}
.cta-band h2{font-size:30px;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;flex-direction:column;align-items:flex-end;gap:10px}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-2);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  height:34px;padding:0 14px;display:inline-flex;align-items:center;border-radius:999px;
  font-size:13px;color:var(--text-2);border:1px solid var(--line)
}
.footer-social a:hover{color:var(--primary);border-color:var(--line-strong);background:rgba(31,217,255,.06)}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.06em}
.footer-col a{display:block;font-size:14px;color:var(--text-3);padding:7px 0}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3)
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px}
  .reader{padding:34px 32px 38px}
  .article-head h1{font-size:38px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .menu-toggle{display:inline-flex}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .side{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 300px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band .inner{grid-template-columns:1fr}
  .cta-actions{align-items:flex-start}
}
@media (max-width:767px){
  body{font-size:15px}
  .container{padding:0 20px}
  .header-inner{height:56px;gap:14px}
  .nav-links{display:none}
  .page-head{padding:26px 0 6px}
  .article-head h1{font-size:28px}
  .article-head h1::after{margin-top:14px}
  .article-wrap{padding:32px 0 44px}
  .reader{padding:24px 20px 28px;border-radius:var(--radius)}
  .article-cms h2{font-size:22px}
  .article-cms h3{font-size:17px}
  .sec-title h2,.cta-band h2{font-size:22px}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .inline-card{grid-template-columns:1fr;padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding-top:44px}
  .footer-bottom{margin-top:32px;flex-direction:column;align-items:flex-start}
  .cta-band{margin-bottom:44px}
  .cta-band .inner{padding:26px 20px}
  .recommend{padding-bottom:48px}
  .side{flex-direction:column}
  .share-row .btn{margin-left:0;width:100%}
}
@media (max-width:420px){
  .btn{width:100%}
  .header-actions .btn{width:auto}
  .article-head h1{font-size:25px}
  .floating-dl{display:flex}
}
.floating-dl{
  display:none;position:fixed;right:18px;bottom:18px;z-index:70;
  width:52px;height:52px;border-radius:50%;align-items:center;justify-content:center;
  color:#03121A;background:linear-gradient(120deg,var(--primary),var(--primary-2));
  box-shadow:var(--glow);font-size:20px;font-weight:700
}
.floating-dl:hover{color:#03121A;filter:brightness(1.08)}

/* roulang page: category2 */
:root{
  --bg:#05070F;
  --bg-2:#0A0F1F;
  --surface:rgba(18,26,48,.62);
  --surface-2:rgba(10,16,32,.86);
  --primary:#1FD9FF;
  --primary-2:#6E7BFF;
  --accent:#FF3D8B;
  --ok:#38F2A8;
  --text:#E8F1FF;
  --text-2:#9FB0CC;
  --text-3:#6B7C99;
  --line:rgba(120,200,255,.14);
  --line-strong:rgba(31,217,255,.42);
  --r-card:14px;
  --r-glass:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow:0 10px 30px rgba(3,8,20,.55);
  --shadow-hover:0 18px 44px rgba(3,8,20,.7);
  --t:.22s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding-top:68px;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* 顶部通栏 */
.topbar{background:var(--bg-2);border-bottom:1px solid var(--line);font-size:13px;color:var(--text-3)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px;flex-wrap:wrap}
.topbar strong{color:var(--text-2);font-weight:600}
.topbar .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--ok);margin-right:8px;box-shadow:0 0 10px rgba(56,242,168,.8);vertical-align:middle}
.topbar a{color:var(--primary);transition:var(--t)}
.topbar a:hover{opacity:.82}

/* 头部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  height:68px;display:flex;align-items:center;
  background:rgba(5,7,15,.84);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(31,217,255,.42),rgba(110,123,255,.34),transparent);
}
.header-inner{display:flex;align-items:center;gap:20px;width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(31,217,255,.18),rgba(110,123,255,.12));
  border:1px solid rgba(31,217,255,.36);
  box-shadow:0 0 18px rgba(31,217,255,.2);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;letter-spacing:.5px}
.logo-text em{font-style:normal;font-size:11px;letter-spacing:1.6px;color:var(--text-3)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 14px;border-radius:8px;font-size:15px;
  color:var(--text-2);transition:var(--t);
}
.nav-link:hover{color:var(--text);background:rgba(31,217,255,.06)}
.nav-link.active{
  color:var(--text);
  background:rgba(31,217,255,.08);
  box-shadow:0 0 0 1px rgba(31,217,255,.22),0 6px 20px rgba(31,217,255,.14);
}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  box-shadow:0 0 12px rgba(31,217,255,.75);
}
.header-cta{margin-left:12px}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);position:relative;background:rgba(18,26,48,.5);
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:var(--text-2);transition:var(--t);
}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:20px}
.nav-toggle span:nth-child(3){top:26px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;z-index:120;
  background:linear-gradient(180deg,rgba(10,16,32,.98),rgba(5,7,15,.98));
  border-left:1px solid var(--line-strong);
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:20px;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--line);font-size:18px;color:var(--text-2)}
.drawer-group{font-size:12px;letter-spacing:1.4px;color:var(--text-3);margin:14px 0 6px}
.drawer-nav a{
  display:flex;align-items:center;height:52px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:16px;border:1px solid transparent;transition:var(--t);
}
.drawer-nav a:hover{color:var(--text);background:rgba(31,217,255,.07)}
.drawer-nav a.active{
  color:var(--text);background:rgba(31,217,255,.1);border-color:rgba(31,217,255,.4);
  box-shadow:0 0 18px rgba(31,217,255,.16);
}
.drawer-foot{margin-top:auto;padding-top:20px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,14,.7);opacity:0;visibility:hidden;
  transition:var(--t);z-index:110;backdrop-filter:blur(2px);
}
.drawer-mask.show{opacity:1;visibility:visible}
.fab{
  position:fixed;right:18px;bottom:20px;z-index:100;width:52px;height:52px;border-radius:50%;
  display:none;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#04121b;box-shadow:0 10px 26px rgba(31,217,255,.35);
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;letter-spacing:.3px;
  transition:var(--t);white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#04121b;
  box-shadow:0 0 0 1px rgba(31,217,255,.5) inset,0 8px 26px rgba(31,217,255,.28);
}
.btn-primary:hover{
  transform:translateY(-2px);filter:brightness(1.07);
  box-shadow:0 0 0 1px rgba(31,217,255,.6) inset,0 14px 34px rgba(31,217,255,.36);
}
.btn-primary:active{transform:translateY(1px)}
.btn-primary[disabled]{opacity:.45;box-shadow:none;transform:none;filter:none;cursor:not-allowed}
.btn-ghost{
  border:1px solid var(--line-strong);color:var(--primary);background:rgba(31,217,255,.04);
}
.btn-ghost:hover{background:rgba(31,217,255,.1);transform:translateY(-2px);box-shadow:0 8px 22px rgba(31,217,255,.16)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{color:var(--primary);padding:0;height:auto;font-size:14px}
.btn-text:hover{opacity:.8;text-decoration:underline;text-underline-offset:4px}
.btn-block{width:100%}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;line-height:1.5;
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.02);
}
.badge-version{
  border-color:transparent;background:var(--accent);color:#fff;font-weight:700;
  font-variant-numeric:tabular-nums;box-shadow:0 6px 18px rgba(255,61,139,.24);
}
.badge-ok{border-color:rgba(56,242,168,.4);color:var(--ok)}
.badge-primary{border-color:var(--line-strong);color:var(--primary)}

/* 通用板块 */
.section{padding:88px 0}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:1.6px;
  color:var(--primary);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),transparent)}
.section h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:.5px}
.section .lead{margin-top:14px;color:var(--text-2);font-size:15.5px}
.section-alt .lead{color:var(--text-2)}

/* 面包屑 */
.crumb{padding:22px 0 0;font-size:13px;color:var(--text-3)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li:not(:last-child)::after{content:"/";margin-left:8px;color:rgba(107,124,153,.6)}
.crumb a{color:var(--text-2);transition:var(--t)}
.crumb a:hover{color:var(--primary)}
.crumb [aria-current]{color:var(--primary)}

/* Hero */
.hero{position:relative;overflow:hidden;padding:56px 0 88px}
.hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.3;
}
.hero-veil{
  position:absolute;inset:0;
  background:
    repeating-linear-gradient(0deg,rgba(31,217,255,.05) 0 1px,transparent 1px 42px),
    repeating-linear-gradient(90deg,rgba(31,217,255,.05) 0 1px,transparent 1px 42px),
    linear-gradient(180deg,rgba(5,7,15,.86),rgba(5,7,15,.95));
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:.5px;margin-top:18px}
.hero h1 span{
  background:linear-gradient(100deg,var(--primary),var(--primary-2) 60%,var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-panel{
  position:relative;padding:28px;border-radius:var(--r-glass);
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow);backdrop-filter:blur(10px);
  overflow:hidden;
}
.hero-panel::before{
  content:"";position:absolute;inset:0 0 auto;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,217,255,.6),transparent);
}
.hero-panel .panel-label{font-size:12px;letter-spacing:2px;color:var(--text-3)}
.hero-version{
  font-size:52px;font-weight:700;line-height:1.1;letter-spacing:1px;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(100deg,var(--primary),var(--primary-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin:6px 0 4px;
}
.hero-panel .panel-line{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--text-2)}
.hero-panel .panel-line strong{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums}
.hero-panel .panel-line:last-of-type{border-bottom:0}
.hero-panel .btn{margin-top:16px}
.platform-mini{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.platform-mini span{
  font-size:12px;padding:3px 10px;border-radius:999px;border:1px solid var(--line);
  color:var(--text-3);
}
.hero-note{margin-top:14px;font-size:12.5px;color:var(--text-3)}

/* 卡片网格 */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{
  position:relative;display:flex;flex-direction:column;
  padding:26px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow);transition:var(--t);
}
.card::before{
  content:"";position:absolute;inset:0 0 auto;height:1px;border-radius:var(--r-card) var(--r-card) 0 0;
  background:linear-gradient(90deg,transparent,rgba(31,217,255,.35),transparent);
}
.card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover),0 0 24px rgba(31,217,255,.12)}
.card h3{font-size:20px;font-weight:700;margin-bottom:10px}
.card p{color:var(--text-2);font-size:14.5px}
.card .card-index{
  font-size:13px;letter-spacing:2px;color:var(--primary);margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid rgba(31,217,255,.34);color:var(--primary);
  background:rgba(31,217,255,.06);margin-bottom:16px;font-size:18px;
  font-variant-numeric:tabular-nums;
}

/* 更新亮点：图文卡 */
.spot-card{
  padding:0;overflow:hidden;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);
  transition:var(--t);display:flex;flex-direction:column;
}
.spot-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.spot-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.spot-media img{width:100%;height:100%;object-fit:cover;transition:transform .36s ease}
.spot-card:hover .spot-media img{transform:scale(1.03)}
.spot-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,15,.12),rgba(5,7,15,.72))}
.spot-tag{position:absolute;top:12px;left:12px;z-index:2}
.spot-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.spot-body h3{font-size:18px;font-weight:700;margin-bottom:10px}
.spot-body p{font-size:14.5px;color:var(--text-2)}
.spot-body .btn{margin-top:18px;align-self:flex-start}
.spot-caption{padding:0 22px 20px;font-size:12.5px;color:var(--text-3)}

/* 时间轴 */
.timeline{position:relative;padding-left:0;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:20px;top:6px;bottom:6px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-2) 55%,rgba(110,123,255,0));
  box-shadow:0 0 16px rgba(31,217,255,.35);
}
.tl-item{position:relative;padding-left:68px;margin-bottom:26px}
.tl-item:last-child{margin-bottom:0}
.tl-node{
  position:absolute;left:12px;top:28px;width:18px;height:18px;border-radius:50%;
  background:var(--bg);border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(31,217,255,.1),0 0 16px rgba(31,217,255,.5);
}
.tl-item.is-latest .tl-node{border-color:var(--accent);box-shadow:0 0 0 4px rgba(255,61,139,.12),0 0 18px rgba(255,61,139,.55)}
.tl-card{
  padding:24px 26px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);
  transition:var(--t);
}
.tl-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover),0 0 24px rgba(31,217,255,.12)}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:14px}
.tl-date{font-size:13.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.tl-card h3{font-size:19px;font-weight:700;margin-bottom:12px}
.tl-points li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--text-2);line-height:1.9;
}
.tl-points li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(31,217,255,.6);
}
.tl-meta{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* 检查清单 */
.check-item{
  padding:24px;border-radius:var(--r-card);border:1px solid var(--line);
  background:rgba(255,255,255,.02);transition:var(--t);
}
.check-item:hover{border-color:var(--line-strong);background:rgba(31,217,255,.05)}
.check-item .num{
  font-size:13px;letter-spacing:2px;color:var(--primary);font-variant-numeric:tabular-nums;
}
.check-item h3{font-size:17px;font-weight:700;margin:10px 0 8px}
.check-item p{font-size:14px;color:var(--text-2)}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step{
  position:relative;padding:28px 24px 26px;border-radius:var(--r-card);
  background:var(--surface-2);border:1px solid var(--line);transition:var(--t);
}
.step:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.step .step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:16px;
  font-size:15px;font-weight:700;color:var(--primary);
  border:1px solid rgba(31,217,255,.36);background:rgba(31,217,255,.07);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2)}

/* FAQ */
.faq-list{max-width:920px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  border-radius:var(--r-card);border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--shadow);overflow:hidden;transition:var(--t);
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-q .mark{
  position:relative;flex:0 0 22px;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line-strong);color:var(--primary);
  transition:transform .24s ease,background var(--t);
}
.faq-q .mark::before,.faq-q .mark::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .mark::before{width:10px;height:2px}
.faq-q .mark::after{width:2px;height:10px;transition:opacity .24s ease}
.faq-item.open .faq-q .mark{transform:rotate(180deg);background:rgba(31,217,255,.12)}
.faq-item.open .faq-q .mark::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{padding:0 24px 22px;color:var(--text-2);font-size:14.8px;line-height:1.85}

/* CTA 条 */
.cta-band{position:relative;overflow:hidden;padding:0}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:48px 44px;border-radius:var(--r-glass);
  background:var(--surface);border:1px solid var(--line-strong);box-shadow:var(--shadow);
  overflow:hidden;
}
.cta-inner::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity:.22;
}
.cta-inner h2{font-size:28px;font-weight:700;line-height:1.35}
.cta-inner p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start;flex-shrink:0}

/* 页脚 */
.site-footer{margin-top:88px;background:var(--bg-2);border-top:1px solid var(--line);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{color:var(--text-2);font-size:14.5px;max-width:330px}
.footer-social{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.footer-social a{
  font-size:13px;padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-2);transition:var(--t);
}
.footer-social a:hover{color:var(--primary);border-color:var(--line-strong);background:rgba(31,217,255,.06)}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text)}
.footer-col a{display:block;font-size:14.5px;color:var(--text-2);padding:6px 0;transition:var(--t)}
.footer-col a:hover{color:var(--primary);transform:translateX(3px)}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* 响应式 */
@media (max-width:1279px){
  .container,.header-inner{padding:0 28px}
  .hero h1{font-size:38px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  body{padding-top:56px}
  .site-header{height:56px}
  .header-inner{padding:0 20px}
  .nav-links{display:none}
  .header-cta{display:none}
  .nav-toggle{display:block}
  .fab{display:grid}
  .container{padding:0 20px}
  .section{padding:64px 0}
  .hero{padding:36px 0 64px}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:31px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 28px}
  .timeline::before{left:16px}
  .tl-item{padding-left:52px}
  .tl-node{left:8px}
}
@media (max-width:767px){
  .section{padding:44px 0}
  .section h2{font-size:22px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .hero-version{font-size:42px}
  .hero-actions .btn{width:100%}
  .grid-3,.grid-4,.steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-inner h2{font-size:22px}
  .hero-panel{padding:22px}
  .faq-q{font-size:15.5px;padding:18px 18px}
  .faq-a p{padding:0 18px 18px}
  .tl-card{padding:20px 18px}
  .site-footer{margin-top:56px;padding-top:52px}
}
@media (max-width:420px){
  .container,.header-inner{padding:0 16px}
  .hero h1{font-size:25px}
  .logo-text em{font-size:10px;letter-spacing:1px}
  .btn{height:48px;width:100%}
  .btn-text{height:auto;width:auto}
}

/* roulang page: category4 */
:root{
  --bg:#05070F;
  --bg-2:#0A0F1F;
  --surface:rgba(18,26,48,.62);
  --surface-2:rgba(10,16,32,.86);
  --primary:#1FD9FF;
  --primary-2:#6E7BFF;
  --accent:#FF3D8B;
  --ok:#38F2A8;
  --text:#E8F1FF;
  --text-2:#9FB0CC;
  --text-3:#6B7C99;
  --line:rgba(120,200,255,.14);
  --line-strong:rgba(31,217,255,.42);
  --radius-card:14px;
  --radius-glass:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 10px 30px rgba(3,8,20,.55);
  --shadow-hover:0 18px 44px rgba(3,8,20,.7);
  --glow:0 0 0 1px rgba(31,217,255,.5),0 8px 26px rgba(31,217,255,.28);
  --ease:.22s ease;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),opacity var(--ease)}
a:hover{color:#7CE9FF}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ============ 顶栏 ============ */
.topbar{
  height:40px;
  background:var(--bg-2);
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
}
.topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar .ver{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px rgba(56,242,168,.8);flex:0 0 auto}
.topbar a{font-size:13px;white-space:nowrap}

.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,15,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(31,217,255,.38),rgba(110,123,255,.38),rgba(31,217,255,0));
}
.header-inner{height:68px;display:flex;align-items:center;gap:28px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(31,217,255,.18),rgba(110,123,255,.16));
  border:1px solid var(--line-strong);
  box-shadow:0 0 18px rgba(31,217,255,.22);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:17px;color:var(--text);letter-spacing:.04em}
.logo-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.14em}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;
  padding:9px 14px;border-radius:var(--radius-btn);
  font-size:15px;color:var(--text-2);
  transition:color var(--ease),background var(--ease),box-shadow var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  opacity:0;transition:opacity var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(31,217,255,.06)}
.nav-link:hover::after{opacity:.7}
.nav-link.active{
  color:var(--text);
  background:rgba(31,217,255,.08);
  box-shadow:inset 0 0 0 1px rgba(31,217,255,.28),0 0 18px rgba(31,217,255,.16);
}
.nav-link.active::after{opacity:1;box-shadow:0 0 12px rgba(31,217,255,.9)}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;color:#04121B;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:var(--glow);
  white-space:nowrap;
}
.header-cta:hover{color:#04121B;filter:brightness(1.08);transform:translateY(-2px)}
.header-cta:active{transform:translateY(1px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  background:transparent;border:1px solid var(--line-strong);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-alt{background:var(--bg-2)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--primary);letter-spacing:.16em;
  border:1px solid var(--line-strong);border-radius:999px;padding:4px 12px;margin-bottom:16px;
}
.section-head h2{font-size:30px;margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15px}
.eyebrow-line{width:26px;height:1px;background:var(--primary)}

/* ============ 面包屑 ============ */
.crumb{padding:22px 0 0;font-size:13px;color:var(--text-3)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--text-3)}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb .current{color:var(--text)}

/* ============ Hero ============ */
.guide-hero{position:relative;padding:44px 0 76px;overflow:hidden;border-bottom:1px solid var(--line)}
.guide-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(5,7,15,.86),rgba(5,7,15,.93)),
    url("/assets/images/backpic/back-2.png");
  background-size:cover,cover;
  background-position:center,center;
}
.guide-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,200,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,200,255,.055) 1px,transparent 1px);
  background-size:38px 38px,38px 38px;
}
.guide-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--accent);
  background:rgba(255,61,139,.12);
  border:1px solid rgba(255,61,139,.42);
  border-radius:999px;padding:5px 13px;margin-bottom:20px;
}
.hero-grid h1{font-size:44px;letter-spacing:.01em}
.hero-grid h1 b{color:var(--primary);font-weight:700}
.hero-sub{margin-top:18px;color:var(--text-2);font-size:17px;max-width:560px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform var(--ease),filter var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease);
}
.btn-primary{color:#04121B;background:linear-gradient(135deg,var(--primary),var(--primary-2));box-shadow:var(--glow)}
.btn-primary:hover{color:#04121B;filter:brightness(1.08);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{color:var(--primary);background:transparent;border-color:var(--line-strong)}
.btn-ghost:hover{color:#7CE9FF;background:rgba(31,217,255,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-line{color:var(--text-2);background:transparent;padding:0 4px;height:auto}
.btn-line:hover{color:var(--primary)}
.btn-line::after{content:"→";margin-left:6px;transition:transform var(--ease)}
.btn-line:hover::after{transform:translateX(4px)}
.btn[disabled],.btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}

.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:6px 14px;
  background:rgba(255,255,255,.02);
}
.chip i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(31,217,255,.9)}

/* Hero 侧卡 */
.hero-card{
  position:relative;border-radius:var(--radius-glass);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  padding:26px;
  overflow:hidden;
}
.hero-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(31,217,255,.7),rgba(110,123,255,.3),transparent);
}
.hero-card h3{font-size:20px;margin-bottom:6px}
.hero-card .meta{font-size:13px;color:var(--text-3);margin-bottom:20px}
.ver-block{
  display:flex;align-items:baseline;gap:10px;
  padding:18px;border-radius:var(--radius-card);
  background:var(--surface-2);border:1px solid var(--line);margin-bottom:18px;
}
.ver-block .label{font-size:13px;color:var(--text-3);margin-right:auto}
.ver-block .val{font-size:34px;font-weight:700;color:var(--primary);letter-spacing:.02em}
.ver-list{display:grid;gap:12px;margin-bottom:22px}
.ver-list li{display:flex;justify-content:space-between;gap:12px;font-size:14px;color:var(--text-2);border-bottom:1px dashed var(--line);padding-bottom:10px}
.ver-list li:last-child{border-bottom:0;padding-bottom:0}
.ver-list b{color:var(--text);font-weight:600}
.hero-card .btn{width:100%}

/* ============ 攻略列表 + 侧栏 ============ */
.guide-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:40px;align-items:start}
.guide-list{display:grid;gap:16px}
.guide-row{
  display:grid;grid-template-columns:160px minmax(0,1fr);gap:20px;
  padding:18px;border-radius:var(--radius-card);
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease),background var(--ease);
  color:inherit;
}
.guide-row:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover),0 0 22px rgba(31,217,255,.14);
  background:rgba(22,32,58,.72);
  color:inherit;
}
.thumb{
  aspect-ratio:8/5;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);background:var(--surface-2);
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.guide-row:hover .thumb img{transform:scale(1.04)}
.row-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.row-tags{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;line-height:1;padding:5px 12px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--primary);background:rgba(31,217,255,.06);
}
.badge-accent{border-color:rgba(255,61,139,.5);color:#FFD3E6;background:rgba(255,61,139,.18);font-weight:600}
.badge-ok{border-color:rgba(56,242,168,.42);color:var(--ok);background:rgba(56,242,168,.08)}
.row-body h3{font-size:20px;transition:color var(--ease)}
.guide-row:hover .row-body h3{color:var(--primary)}
.row-body p{font-size:14px;color:var(--text-2);line-height:1.7}
.row-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--text-3);margin-top:2px}
.row-meta span{display:inline-flex;align-items:center;gap:6px}

.side{position:sticky;top:88px;display:grid;gap:16px}
.side-card{
  border-radius:var(--radius-card);background:var(--surface-2);
  border:1px solid var(--line);box-shadow:var(--shadow-card);padding:20px;
}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:linear-gradient(180deg,var(--primary),var(--primary-2))}
.toc{display:grid;gap:10px}
.toc a{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.5}
.toc a::before{content:"";width:6px;height:6px;margin-top:8px;border-radius:2px;background:var(--primary-2);flex:0 0 auto;opacity:.7}
.toc a:hover{color:var(--primary)}
.hot-list{display:grid;gap:12px}
.hot-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);align-items:baseline}
.hot-list .idx{font-weight:700;color:var(--text-3);font-size:13px}
.hot-list a{color:var(--text-2);line-height:1.55}
.hot-list a:hover{color:var(--primary)}
.side-card .btn{width:100%;margin-top:16px}

/* ============ 节奏流程 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.flow-item{
  position:relative;padding:22px;border-radius:var(--radius-card);
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-card);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.flow-item:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.flow-item .step{
  counter-increment:step;
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;margin-bottom:14px;
  font-size:13px;font-weight:700;color:#04121B;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
}
.flow-item .step::before{content:counter(step,decimal-leading-zero)}
.flow-item h3{font-size:17px;margin-bottom:8px}
.flow-item p{font-size:14px;color:var(--text-2)}

/* ============ 图集 ============ */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.gallery figure{margin:0;border-radius:var(--radius-card);overflow:hidden;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-card);transition:transform var(--ease),border-color var(--ease)}
.gallery figure:hover{transform:translateY(-2px);border-color:var(--line-strong)}
.gallery .ph{aspect-ratio:16/9;overflow:hidden}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.gallery figure:hover img{transform:scale(1.03)}
.gallery figcaption{padding:14px 16px;font-size:13px;color:var(--text-3)}

/* ============ FAQ ============ */
.faq{display:grid;gap:12px}
.faq-item{
  border-radius:var(--radius-card);background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-card);overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow-card),0 0 22px rgba(31,217,255,.12)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  display:flex;align-items:center;gap:16px;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .sign{
  margin-left:auto;flex:0 0 auto;position:relative;width:16px;height:16px;
}
.faq-item summary .sign::before,.faq-item summary .sign::after{
  content:"";position:absolute;left:1px;top:7px;width:14px;height:2px;border-radius:2px;
  background:var(--primary);transition:transform var(--ease),opacity var(--ease);
}
.faq-item summary .sign::after{transform:rotate(90deg)}
.faq-item[open] summary .sign::after{transform:rotate(0);opacity:0}
.faq-body{padding:0 22px 20px;color:var(--text-2);font-size:15px}

/* ============ CTA ============ */
.cta-band{position:relative;overflow:hidden;padding:0 0 88px}
.cta-inner{
  position:relative;border-radius:var(--radius-glass);overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-hover);
}
.cta-inner::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(120deg,rgba(5,7,15,.9),rgba(5,7,15,.82)),url("/assets/images/backpic/back-3.png");
  background-size:cover,cover;background-position:center,center;
}
.cta-inner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,200,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,200,255,.05) 1px,transparent 1px);
  background-size:34px 34px,34px 34px;
}
.cta-content{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr auto;gap:32px;align-items:center;padding:48px}
.cta-content h2{font-size:30px;margin-bottom:12px}
.cta-content p{color:var(--text-2);font-size:15px;max-width:640px}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.cta-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.cta-badges .chip{background:rgba(255,255,255,.04)}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.footer-social a{
  font-size:13px;color:var(--text-2);border:1px solid var(--line);
  border-radius:999px;padding:5px 14px;transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.footer-social a:hover{color:var(--primary);border-color:var(--line-strong);background:rgba(31,217,255,.07)}
.footer-col h4{font-size:15px;margin-bottom:18px}
.footer-col a{display:block;font-size:14px;color:var(--text-2);padding:6px 0}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* 移动悬浮下载 */
.float-dl{
  display:none;position:fixed;right:18px;bottom:18px;z-index:70;
  width:52px;height:52px;border-radius:50%;
  align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#04121B;font-size:12px;font-weight:700;
  box-shadow:var(--glow);
}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,14,.62);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:80;
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:340px;z-index:90;
  background:var(--bg-2);border-left:1px solid var(--line-strong);
  transform:translateX(100%);transition:transform .26s ease;
  display:flex;flex-direction:column;padding:18px 0 22px;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 16px;border-bottom:1px solid var(--line)}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--text-2);cursor:pointer;font-size:18px;line-height:1}
.drawer-group{padding:18px 20px 0;font-size:12px;letter-spacing:.16em;color:var(--text-3)}
.drawer nav{display:flex;flex-direction:column;padding:0 12px;margin-top:8px}
.drawer nav a{
  height:52px;display:flex;align-items:center;padding:0 10px;border-radius:10px;
  font-size:15px;color:var(--text-2);
}
.drawer nav a:hover,.drawer nav a.active{color:var(--text);background:rgba(31,217,255,.08);box-shadow:inset 0 0 0 1px rgba(31,217,255,.22)}
.drawer-foot{margin-top:auto;padding:16px 20px 0;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
body.drawer-open{overflow:hidden}

/* 进场动效 */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .3s ease,transform .3s ease}
.reveal.in{opacity:1;transform:none}

/* ============ 断点 ============ */
@media (max-width:1279px){
  .hero-grid{gap:36px}
  .guide-layout{grid-template-columns:minmax(0,1fr) 240px;gap:28px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .header-inner{height:60px;gap:16px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .header-cta{display:none}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-grid h1{font-size:34px}
  .guide-layout{grid-template-columns:1fr}
  .side{position:static;grid-template-columns:1fr 1fr}
  .flow{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .cta-content{grid-template-columns:1fr;padding:40px}
  .cta-content h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:15px}
  .container{padding:0 20px}
  .section{padding:44px 0}
  .section-head h2{font-size:22px}
  .topbar{font-size:12px}
  .hero-grid h1{font-size:28px}
  .hero-sub{font-size:15px}
  .hero-card{padding:20px}
  .ver-block .val{font-size:28px}
  .guide-row{grid-template-columns:1fr;gap:14px}
  .thumb{aspect-ratio:16/9}
  .row-body h3{font-size:17px}
  .guide-row .row-body p{font-size:14px}
  .side{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr}
  .cta-band{padding-bottom:44px}
  .cta-content{padding:28px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{margin-top:36px;flex-direction:column;gap:8px}
  .float-dl{display:flex}
}
@media (max-width:420px){
  .hero-grid h1{font-size:25px}
  .btn{width:100%}
  .hero-btns .btn{width:100%}
  .cta-badges .chip{font-size:12px}
}

/* roulang page: category3 */
:root{
  --bg:#05070F;
  --bg-2:#0A0F1F;
  --surface:rgba(18,26,48,.62);
  --surface-2:rgba(10,16,32,.86);
  --primary:#1FD9FF;
  --primary-2:#6E7BFF;
  --accent:#FF3D8B;
  --ok:#38F2A8;
  --text:#E8F1FF;
  --text-2:#9FB0CC;
  --text-3:#6B7C99;
  --line:rgba(120,200,255,.14);
  --line-strong:rgba(31,217,255,.42);
  --r-card:14px;
  --r-glass:16px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --shadow-card:0 10px 30px rgba(3,8,20,.55);
  --shadow-card-hover:0 18px 44px rgba(3,8,20,.7);
  --shadow-glow:0 0 0 1px rgba(31,217,255,.5), 0 8px 26px rgba(31,217,255,.28);
  --t:.22s ease;
  --header-h:68px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:var(--header-h);
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(31,217,255,.10), transparent 62%),
    radial-gradient(760px 480px at 92% 4%, rgba(110,123,255,.12), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--t),opacity var(--t);}
a:hover{color:var(--primary);}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
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:700;letter-spacing:.2px;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.section{padding:88px 0;position:relative;}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:30px;margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:15px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.6px;color:var(--primary);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--primary),var(--primary-2));}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:var(--header-h);
  background:rgba(5,7,15,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,217,255,.4),rgba(110,123,255,.35),transparent);
}
.header-inner{display:flex;align-items:center;gap:24px;height:100%;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(31,217,255,.18),rgba(110,123,255,.16));
  border:1px solid var(--line-strong);
  box-shadow:0 0 18px rgba(31,217,255,.18);
}
.logo-text{display:flex;flex-direction:column;line-height:1.1;}
.logo-text strong{font-size:17px;letter-spacing:.5px;}
.logo-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:1.4px;}

.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:8px 14px;font-size:15px;color:var(--text-2);
  border-radius:8px;transition:color var(--t),background var(--t);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  opacity:0;transform:scaleX(.4);transition:opacity var(--t),transform var(--t);
}
.nav-link:hover{color:var(--text);background:rgba(31,217,255,.06);}
.nav-link:hover::after{opacity:.7;transform:scaleX(1);}
.nav-link.active{
  color:var(--text);
  background:rgba(31,217,255,.08);
  box-shadow:0 0 0 1px rgba(31,217,255,.22),0 6px 20px rgba(31,217,255,.14);
}
.nav-link.active::after{opacity:1;transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);align-items:center;justify-content:center;
  flex-direction:column;gap:4px;background:rgba(255,255,255,.03);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform var(--t),opacity var(--t);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.nav-overlay{
  position:fixed;inset:0;background:rgba(3,6,14,.72);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:70;
}
.nav-overlay.show{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;letter-spacing:.3px;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#04121c;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);color:#04121c;box-shadow:0 0 0 1px rgba(31,217,255,.6),0 14px 34px rgba(31,217,255,.34);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  border:1px solid var(--line-strong);color:var(--primary);
  background:rgba(31,217,255,.05);
}
.btn-ghost:hover{background:rgba(31,217,255,.12);transform:translateY(-2px);color:var(--primary);}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{color:var(--text-2);padding:0 6px;height:auto;}
.btn-text:hover{color:var(--primary);}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none;}
.btn-block{width:100%;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:var(--r-pill);
  font-size:13px;line-height:1.7;
  border:1px solid var(--line);color:var(--text-2);
  background:rgba(255,255,255,.03);
}
.badge-hot{background:var(--accent);border-color:transparent;color:#fff;font-weight:600;}
.badge-ok{border-color:rgba(56,242,168,.45);color:var(--ok);}
.badge-primary{border-color:var(--line-strong);color:var(--primary);}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);flex-wrap:wrap;}
.crumbs a{color:var(--text-2);}
.crumbs span.sep{opacity:.55;}
.crumbs .current{color:var(--text);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:64px 0 72px;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  opacity:.5;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(5,7,15,.82),rgba(5,7,15,.94)),
    repeating-linear-gradient(0deg,rgba(31,217,255,.05) 0 1px,transparent 1px 44px),
    repeating-linear-gradient(90deg,rgba(31,217,255,.05) 0 1px,transparent 1px 44px);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.35fr 1fr;gap:56px;align-items:center;}
.hero h1{font-size:44px;line-height:1.22;margin:16px 0 18px;}
.hero h1 .hl{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{color:var(--text-2);font-size:16px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-figure{
  position:relative;border-radius:var(--r-glass);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  background:var(--surface);
}
.hero-figure img{aspect-ratio:16/10;object-fit:cover;width:100%;}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 42%,rgba(5,7,15,.86));
  pointer-events:none;
}
.hero-figure figcaption{
  position:absolute;left:20px;right:20px;bottom:16px;font-size:13px;color:var(--text-2);
}
.hero-stat{
  position:absolute;top:16px;right:16px;
  padding:10px 14px;border-radius:var(--r-card);
  background:var(--surface-2);border:1px solid var(--line-strong);
  font-size:13px;color:var(--text-2);text-align:right;
}
.hero-stat strong{display:block;font-size:20px;color:var(--primary);font-variant-numeric:tabular-nums;}

/* ---------- 筛选条 ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  padding:16px 20px;border-radius:var(--r-glass);
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-card);margin-bottom:36px;
}
.filter-group{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.filter-label{font-size:13px;color:var(--text-3);margin-right:4px;}
.chip{
  padding:7px 15px;border-radius:var(--r-pill);font-size:14px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  transition:all var(--t);
}
.chip:hover{color:var(--text);border-color:var(--line-strong);transform:translateY(-1px);}
.chip.active{
  color:#04121c;background:linear-gradient(120deg,var(--primary),var(--primary-2));
  border-color:transparent;box-shadow:0 6px 20px rgba(31,217,255,.24);
}
.filter-spacer{margin-left:auto;}
.sort-select{
  height:38px;padding:0 14px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text-2);font-size:14px;
}
.sort-select:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px rgba(31,217,255,.18);}

/* ---------- 礼包网格 ---------- */
.gift-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.gift-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-glass);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.gift-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:var(--line-strong);}
.gift-media{position:relative;overflow:hidden;}
.gift-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.gift-card:hover .gift-media img{transform:scale(1.03);}
.gift-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.1),rgba(5,7,15,.55));
}
.gift-media .badge{position:absolute;top:12px;left:12px;z-index:2;}
.gift-media .badge.alt{left:auto;right:12px;background:rgba(5,7,15,.7);border-color:var(--line-strong);color:var(--primary);}
.gift-body{padding:20px;display:flex;flex-direction:column;flex:1;gap:12px;}
.gift-body h3{font-size:19px;}
.gift-desc{font-size:14px;color:var(--text-2);}
.gift-meta{
  display:flex;flex-wrap:wrap;gap:8px 18px;font-size:13px;color:var(--text-3);
}
.gift-meta b{color:var(--text-2);font-weight:500;}
.gift-value{
  display:flex;align-items:baseline;gap:8px;
  padding:12px 14px;border-radius:var(--r-card);
  background:rgba(255,61,139,.07);border:1px solid rgba(255,61,139,.28);
}
.gift-value strong{font-size:22px;color:var(--accent);font-variant-numeric:tabular-nums;}
.gift-value span{font-size:13px;color:var(--text-3);}
.gift-body .btn{margin-top:auto;}

/* ---------- 领取流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{
  position:relative;padding:24px 20px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(18,26,48,.72),rgba(10,16,32,.6));
  border:1px solid var(--line);
  transition:border-color var(--t),transform var(--t);
}
.step:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.step-index{
  font-size:13px;letter-spacing:2px;color:var(--primary);
  font-variant-numeric:tabular-nums;margin-bottom:12px;display:block;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--text-2);}

/* ---------- 保障条 ---------- */
.assure{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-glass);
  overflow:hidden;
}
.assure-item{
  background:var(--bg-2);padding:26px 20px;text-align:center;
  transition:background var(--t);
}
.assure-item:hover{background:rgba(31,217,255,.05);}
.assure-icon{
  width:44px;height:44px;margin:0 auto 14px;border-radius:12px;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--primary);
  background:rgba(31,217,255,.07);
}
.assure-item h3{font-size:16px;margin-bottom:6px;}
.assure-item p{font-size:13px;color:var(--text-3);}

/* ---------- 说明图文 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.split figure{
  border-radius:var(--r-glass);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);background:var(--surface);
}
.split figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.list-check{display:flex;flex-direction:column;gap:14px;margin-top:24px;}
.list-check li{display:flex;gap:12px;font-size:15px;color:var(--text-2);}
.list-check li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:2px;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  box-shadow:0 0 10px rgba(31,217,255,.5);
}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-glass);overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item[open]{box-shadow:var(--shadow-card);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;line-height:1;color:var(--primary);
  transition:transform .24s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-answer{padding:0 22px 20px;font-size:15px;color:var(--text-2);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:20px;border:1px solid var(--line-strong);
  padding:48px 44px;
  display:flex;align-items:center;gap:32px;justify-content:space-between;
  background:var(--surface-2);
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  opacity:.22;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(120deg,rgba(5,7,15,.9),rgba(5,7,15,.72)),
    repeating-linear-gradient(90deg,rgba(31,217,255,.06) 0 1px,transparent 1px 36px);
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{font-size:28px;margin-bottom:10px;}
.cta-band p{color:var(--text-2);font-size:15px;max-width:520px;}
.cta-actions{display:flex;flex-direction:column;align-items:flex-start;gap:12px;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:linear-gradient(180deg,rgba(10,15,31,.6),rgba(5,7,15,1));
  border-top:1px solid var(--line);
  padding-top:72px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand p{font-size:14px;color:var(--text-3);margin-top:16px;max-width:320px;}
.footer-social{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap;}
.footer-social a{
  padding:6px 14px;border-radius:var(--r-pill);font-size:13px;
  border:1px solid var(--line);color:var(--text-2);
}
.footer-social a:hover{border-color:var(--line-strong);color:var(--primary);}
.footer-col{display:flex;flex-direction:column;gap:12px;}
.footer-col h4{font-size:15px;margin-bottom:6px;color:var(--text);}
.footer-col a{font-size:14px;color:var(--text-3);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:56px;padding:22px 0 32px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .3s ease,transform .3s ease;}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 26px;}
  .hero h1{font-size:38px;}
  .gift-grid{gap:20px;}
}
@media (max-width:1023px){
  :root{--header-h:64px;}
  .container{padding:0 22px;}
  .section{padding:64px 0;}
  .section-head h2{font-size:24px;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:82vw;max-width:380px;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:88px 22px 32px;margin:0;
    background:rgba(8,12,24,.97);
    backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform .28s ease;
    z-index:75;overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-link{height:52px;display:flex;align-items:center;font-size:16px;padding:0 14px;}
  .nav-link::after{display:none;}
  .nav-link.active{background:rgba(31,217,255,.1);box-shadow:inset 0 0 0 1px rgba(31,217,255,.25);}
  .header-actions .btn-primary{display:none;}
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero{padding:44px 0 52px;}
  .hero h1{font-size:30px;}
  .gift-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .assure{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .cta-actions{width:100%;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:767px){
  body{font-size:15px;padding-top:56px;}
  :root{--header-h:56px;}
  .container{padding:0 20px;}
  .section{padding:44px 0;}
  .hero h1{font-size:26px;}
  .hero-lead{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .gift-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .assure{grid-template-columns:1fr 1fr;}
  .filter-bar{padding:14px;gap:10px;}
  .filter-spacer{margin-left:0;width:100%;}
  .sort-select{width:100%;}
  .cta-band h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .site-footer{margin-top:56px;padding-top:52px;}
}
@media (max-width:420px){
  .hero h1{font-size:23px;}
  .section-head h2{font-size:20px;}
  .assure{grid-template-columns:1fr;}
  .logo-text strong{font-size:15px;}
}