/* roulang page: index */
:root{
  --bg:#060B16;
  --bg-soft:#0E1626;
  --panel:rgba(255,255,255,.04);
  --panel-strong:rgba(255,255,255,.06);
  --border:rgba(120,200,255,.14);
  --border-soft:rgba(255,255,255,.08);
  --cyan:#22D3EE;
  --blue:#3B82F6;
  --orange:#FF7A45;
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F87171;
  --text:#E8EEF7;
  --text-2:#9AA9C0;
  --text-3:#5D6B85;
  --line:rgba(255,255,255,.08);
  --radius:16px;
  --radius-img:12px;
  --radius-sm:10px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-hover:0 26px 54px -22px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(34,211,238,.5), 0 8px 24px -6px rgba(34,211,238,.45);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::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:1.85;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 80% -10%, rgba(34,211,238,.16), transparent 62%),
    radial-gradient(760px 480px at 2% 4%, rgba(59,130,246,.14), transparent 60%),
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed,fixed,fixed,fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 顶部信息条 ---------- */
.topbar{background:rgba(6,11,22,.92);border-bottom:1px solid var(--border-soft);font-size:13px;color:var(--text-3)}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px}
.topbar__domain{letter-spacing:.04em;color:var(--text-2);font-variant-numeric:tabular-nums}
.topbar__tip{color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar__action{color:var(--cyan);font-weight:600;transition:opacity .2s ease}
.topbar__action:hover{opacity:.8}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(6,11,22,.72);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(6,11,22,.94);border-bottom-color:var(--border-soft)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo__mark{
  width:30px;height:30px;border-radius:9px;position:relative;flex:0 0 auto;
  background:linear-gradient(140deg,var(--cyan),var(--blue));
  box-shadow:0 6px 18px -6px rgba(34,211,238,.6);
}
.logo__mark::after{
  content:"";position:absolute;inset:8px;border-radius:3px;border:2px solid rgba(6,11,22,.85);
  border-right-color:transparent;border-bottom-color:transparent;transform:rotate(45deg);
}
.logo__text{font-size:16px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.nav__menu{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center}
.nav__link{
  position:relative;padding:8px 12px;font-size:15px;color:var(--text-2);
  border-radius:var(--radius-sm);transition:color .2s ease,background .2s ease;white-space:nowrap;
}
.nav__link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav__link.is-active{color:var(--text);font-weight:600}
.nav__link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--blue));
}
.nav__right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav__toggle{
  display:none;width:40px;height:40px;border-radius:var(--radius-sm);
  border:1px solid var(--border);align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav__toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-2);transition:background .2s ease}
.nav__toggle:hover span{background:var(--cyan)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .18s ease,box-shadow .25s ease,filter .2s ease,background .2s ease,color .2s ease;
}
.btn--primary{
  color:#04121A;
  background:linear-gradient(90deg,var(--cyan),var(--blue));
  box-shadow:var(--glow);
}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(34,211,238,.7),0 14px 32px -8px rgba(34,211,238,.6)}
.btn--primary:active{transform:translateY(1px);box-shadow:none}
.btn--ghost{color:var(--cyan);border:1px solid rgba(34,211,238,.55);background:transparent}
.btn--ghost:hover{background:rgba(34,211,238,.1);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--block{width:100%}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--cyan);margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--cyan),var(--blue))}
.section__title{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.section__desc{margin-top:12px;color:var(--text-2);font-size:15px;max-width:640px}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-size:14px;font-weight:600;white-space:nowrap}
.link-more span{transition:transform .22s ease}
.link-more:hover span{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:72px 0 80px;overflow:hidden}
.hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:center}
.hero__tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  border:1px solid var(--border);background:var(--panel);font-size:13px;color:var(--text-2);margin-bottom:20px;
}
.hero__tag i{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(34,211,238,.16)}
.hero h1{font-size:clamp(28px,4.2vw,44px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero__sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:560px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero__stats{display:flex;flex-wrap:wrap;gap:28px;margin-top:38px;padding-top:24px;border-top:1px solid var(--line)}
.hero__stat b{display:block;font-size:22px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums}
.hero__stat span{font-size:13px;color:var(--text-3)}
.hero__panel{
  position:relative;border-radius:var(--radius);border:1px solid var(--border);
  background:var(--panel);backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.05);
  padding:14px;
}
.hero__media{position:relative;border-radius:var(--radius-img);overflow:hidden;aspect-ratio:16/9;background:var(--bg-soft)}
.hero__media img{width:100%;height:100%;object-fit:cover}
.hero__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,22,.05),rgba(6,11,22,.6))}
.hero__float{
  position:absolute;right:22px;bottom:-18px;display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:var(--radius-sm);background:var(--bg-soft);
  border:1px solid var(--border);box-shadow:var(--shadow);
}
.hero__float i{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(52,211,153,.16);flex:0 0 auto}
.hero__float b{font-size:13px;font-weight:600;display:block}
.hero__float span{font-size:12px;color:var(--text-3);display:block;font-variant-numeric:tabular-nums}

/* ---------- 痛点 ---------- */
.pain__list{display:grid;gap:28px;max-width:880px}
.pain__item{position:relative;display:grid;grid-template-columns:64px 1fr;gap:20px;padding-left:22px}
.pain__item::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;border-radius:2px;background:linear-gradient(180deg,var(--cyan),rgba(34,211,238,0))}
.pain__idx{font-size:26px;font-weight:700;color:var(--cyan);font-variant-numeric:tabular-nums;line-height:1.4}
.pain__item h3{font-size:18px;font-weight:600;line-height:1.45}
.pain__item p{margin-top:6px;color:var(--text-2);font-size:15px}

/* ---------- 解决方案 ---------- */
.solution__row{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center}
.solution__row+.solution__row{margin-top:72px}
.solution__row--reverse .solution__media{order:2}
.solution__media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);background:var(--panel);aspect-ratio:16/10;box-shadow:var(--shadow)}
.solution__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.solution__media:hover img{transform:scale(1.03)}
.solution__body h3{font-size:22px;font-weight:700;line-height:1.4}
.solution__body>p{margin-top:14px;color:var(--text-2);font-size:16px}
.solution__feats{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:26px}
.solution__feat{
  display:flex;gap:10px;padding:14px 16px;border-radius:var(--radius-sm);
  background:var(--panel);border:1px solid var(--border-soft);
}
.solution__feat i{width:6px;height:6px;margin-top:10px;border-radius:50%;background:var(--cyan);flex:0 0 auto}
.solution__feat b{display:block;font-size:14px;font-weight:600}
.solution__feat span{font-size:13px;color:var(--text-3)}
.solution__note{margin-top:18px;font-size:13px;color:var(--text-3)}

/* ---------- 数据成果 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{
  padding:26px 22px;border-radius:var(--radius);border:1px solid var(--border);
  background:var(--panel);box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.stat:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.4);box-shadow:var(--shadow-hover)}
.stat b{display:block;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.1;color:var(--cyan);font-variant-numeric:tabular-nums}
.stat b small{font-size:16px;color:var(--text-2);margin-left:4px;font-weight:600}
.stat span{display:block;margin-top:10px;font-size:14px;color:var(--text-2)}

/* ---------- 证言 ---------- */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quote{
  position:relative;padding:28px 24px 24px;border-radius:var(--radius);
  border:1px solid var(--border);background:var(--panel);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform .25s ease,border-color .25s ease;
}
.quote:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.4)}
.quote::before{
  content:"“";position:absolute;top:10px;right:20px;font-size:56px;line-height:1;
  color:rgba(34,211,238,.22);font-family:Georgia,serif;
}
.quote p{font-size:15px;color:var(--text-2);min-height:76px}
.quote__who{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.quote__avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(34,211,238,.9),rgba(59,130,246,.9));color:#04121A;font-weight:700;font-size:15px;
}
.quote__who b{display:block;font-size:14px;font-weight:600}
.quote__who span{display:block;font-size:12px;color:var(--text-3)}
.quotes__dots{display:none;gap:6px;justify-content:center;margin-top:16px}
.quotes__dots i{width:6px;height:6px;border-radius:50%;background:var(--text-3)}
.quotes__dots i:first-child{background:var(--cyan);width:18px;border-radius:99px}

/* ---------- 列表卡片 / CMS ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.post-card{
  display:flex;flex-direction:column;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--border);background:var(--panel);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.42);box-shadow:var(--shadow-hover)}
.post-card__media{aspect-ratio:16/10;overflow:hidden;background:var(--bg-soft)}
.post-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.post-card:hover .post-card__media img{transform:scale(1.03)}
.post-card__body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1 1 auto}
.badge{
  display:inline-flex;align-items:center;height:23px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge--cat{background:rgba(255,122,69,.12);color:var(--orange)}
.badge--state{background:rgba(52,211,153,.12);color:var(--ok)}
.post-card__title{
  margin-top:12px;font-size:20px;font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__excerpt{
  margin-top:10px;font-size:14px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.post-card__more{display:inline-flex;align-items:center;gap:4px;color:var(--cyan);font-weight:600}
.post-card__more i{font-style:normal;transition:transform .22s ease}
.post-card:hover .post-card__more i{transform:translateX(4px)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:64px 24px;border-radius:var(--radius);border:1px dashed var(--border);background:var(--panel);
  text-align:center;color:var(--text-2);
}
.empty-state svg{width:38px;height:38px;stroke:var(--text-3);fill:none;stroke-width:1.6}

/* ---------- 分类入口三宫格 ---------- */
.cats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cat-card{
  padding:26px 24px;border-radius:var(--radius);border:1px solid var(--border);background:var(--panel);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;gap:10px;
}
.cat-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.42);box-shadow:var(--shadow-hover)}
.cat-card__no{font-size:13px;color:var(--cyan);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.08em}
.cat-card h3{font-size:19px;font-weight:600;line-height:1.4}
.cat-card p{font-size:14px;color:var(--text-2)}
.cat-card__go{margin-top:auto;display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-size:14px;font-weight:600}
.cat-card:hover .cat-card__go i{transform:translateX(4px)}
.cat-card__go i{font-style:normal;transition:transform .22s ease}

/* ---------- FAQ ---------- */
.faq{max-width:880px;display:grid;gap:12px}
.faq__item{
  border-radius:var(--radius);border:1px solid var(--border-soft);background:var(--panel);
  padding:0 22px;transition:border-color .25s ease,background .25s ease;
}
.faq__item[open]{border-color:rgba(34,211,238,.36);background:var(--panel-strong)}
.faq__item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:16px;font-weight:600;cursor:pointer;
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{
  content:"";width:9px;height:9px;flex:0 0 auto;border-right:2px solid var(--cyan);
  border-bottom:2px solid var(--cyan);transform:rotate(45deg);transition:transform .25s ease;margin-right:4px;
}
.faq__item[open] summary::after{transform:rotate(-135deg)}
.faq__item p{padding:0 0 20px;font-size:15px;color:var(--text-2);max-width:720px}

/* ---------- CTA ---------- */
.cta{
  position:relative;border-radius:var(--radius);border:1px solid var(--border);
  background:var(--panel);backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.05);
  padding:52px 48px;overflow:hidden;
}
.cta::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--blue));
}
.cta__inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;line-height:1.4;max-width:640px}
.cta p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:560px}
.cta__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;border-top:1px solid var(--border-soft);background:rgba(6,11,22,.7);padding:64px 0 0}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.footer__brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:360px}
.footer__title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:18px;letter-spacing:.02em}
.footer__list{display:grid;gap:12px}
.footer__list a{font-size:14px;color:var(--text-2);transition:color .2s ease,transform .2s ease;display:inline-block}
.footer__list a:hover{color:var(--text);transform:translateX(2px)}
.footer__bottom{
  margin-top:56px;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:12px;color:var(--text-3);
}
.footer__bottom span{font-variant-numeric:tabular-nums}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 20px}
  .nav__menu{
    position:absolute;left:0;right:0;top:100%;display:none;flex-direction:column;
    align-items:stretch;gap:0;padding:6px 16px 18px;
    background:#0E1626;border-bottom:1px solid var(--border);box-shadow:var(--shadow);
  }
  .nav__menu.is-open{display:flex}
  .nav__link{padding:15px 8px;border-bottom:1px solid var(--line);font-size:16px}
  .nav__link.is-active::after{display:none}
  .nav__link.is-active{color:var(--cyan)}
  .nav__toggle{display:flex}
  .hero__grid{grid-template-columns:1fr;gap:36px}
  .hero{padding:56px 0 64px}
  .solution__row{grid-template-columns:1fr;gap:24px}
  .solution__row--reverse .solution__media{order:0}
  .stats{grid-template-columns:repeat(2,1fr)}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .cats{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__brand{grid-column:1/-1}
  .section{padding:72px 0}
  .cta{padding:40px 28px}
}
@media (max-width:768px){
  .topbar__tip{display:none}
  .section{padding:56px 0}
  .section__head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .quotes{grid-template-columns:1fr;gap:16px;overflow:visible}
  .post-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr);gap:14px}
  .stat{padding:20px 16px}
  .solution__feats{grid-template-columns:1fr}
  .hero__stats{gap:20px}
  .pain__item{grid-template-columns:48px 1fr;gap:14px}
  .cta__inner{flex-direction:column;align-items:flex-start}
  .footer__grid{grid-template-columns:1fr;gap:32px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .logo__text{font-size:14px;white-space:normal;line-height:1.3;max-width:150px}
  .hero h1{font-size:26px}
  .hero__actions .btn{width:100%}
  .stats{grid-template-columns:1fr}
  .cta__actions .btn{width:100%}
  .quote p{min-height:0}
}
@media (max-width:1024px){
  .hero__panel,.cta{backdrop-filter:none;-webkit-backdrop-filter:none;background:#0E1626}
  .post-card{background:#0E1626}
  .stat,.quote,.cat-card,.faq__item{background:#0E1626}
}

/* roulang page: article */
:root{
  --bg:#060B16;
  --bg-solid:#0E1626;
  --panel:rgba(255,255,255,.04);
  --panel-strong:rgba(255,255,255,.06);
  --border:rgba(120,200,255,.14);
  --border-strong:rgba(120,200,255,.30);
  --line:rgba(255,255,255,.08);
  --cyan:#22D3EE;
  --cyan-soft:rgba(34,211,238,.12);
  --orange:#FF7A45;
  --orange-soft:rgba(255,122,69,.12);
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F87171;
  --text:#E8EEF7;
  --muted:#9AA9C0;
  --weak:#5D6B85;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-card-hover:0 26px 52px -26px rgba(0,0,0,.92);
  --shadow-glow:0 0 0 1px rgba(34,211,238,.5),0 8px 24px -6px rgba(34,211,238,.45);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);
  background-size:24px 24px;
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 480px at 16% -10%,rgba(34,211,238,.13),transparent 62%),
    radial-gradient(760px 420px at 90% 0%,rgba(124,58,237,.11),transparent 66%);
}
body > *{position:relative;z-index:1}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease}
a:focus-visible,button:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{margin:0}
p{margin:0}
button{font-family:inherit}
::selection{background:rgba(34,211,238,.28);color:#fff}
.container{width:100%;max-width:var(--max);margin:0 auto;padding-left:24px;padding-right:24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,11,22,.78);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(6,11,22,.94);border-bottom-color:var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700}
.logo__mark{
  width:24px;height:24px;border-radius:7px;flex:0 0 auto;position:relative;
  background:linear-gradient(135deg,#22D3EE,#3B82F6);
  box-shadow:0 0 18px -2px rgba(34,211,238,.7);
}
.logo__mark::after{content:"";position:absolute;inset:7px;border-radius:3px;background:#060B16}
.logo__text{font-size:17px;white-space:nowrap;letter-spacing:.01em}
.nav__menu{display:flex;align-items:center;gap:4px}
.nav__link{position:relative;padding:8px 14px;font-size:15px;color:var(--muted);border-radius:8px;transition:color .2s ease,background .2s ease}
.nav__link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav__link.is-active{color:var(--text)}
.nav__link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;border-radius:2px;background:var(--cyan)}
.nav__right{display:flex;align-items:center;gap:12px}
.nav__toggle{
  display:none;width:40px;height:40px;padding:0;cursor:pointer;
  border:1px solid var(--border);border-radius:10px;background:transparent;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav__toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--text);transition:transform .25s ease,opacity .2s ease}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-sm);font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .25s ease,background .25s ease,color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn--sm{height:32px;padding:0 14px;font-size:13px}
.btn--md{height:40px;padding:0 20px;font-size:15px}
.btn--lg{height:48px;padding:0 26px;font-size:16px}
.btn--primary{color:#fff;background:linear-gradient(90deg,#22D3EE,#3B82F6);box-shadow:var(--shadow-glow)}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(1px);box-shadow:none}
.btn--outline{color:var(--cyan);border-color:rgba(34,211,238,.5);background:transparent}
.btn--outline:hover{background:var(--cyan-soft);transform:translateY(-1px)}
.btn--outline:active{transform:translateY(1px)}
.btn--ghost{color:var(--muted);background:rgba(255,255,255,.03);border-color:var(--line)}
.btn--ghost:hover{color:var(--text);border-color:var(--border-strong)}

/* ---------- badge ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1}
.badge--cat{background:var(--orange-soft);color:var(--orange)}
.badge--soft{background:var(--cyan-soft);color:var(--cyan)}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--weak);padding:22px 0 0}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb .sep{color:#39445A}
.breadcrumb .current{color:var(--weak);max-width:44ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 312px;gap:44px;align-items:start;
  padding-top:12px;padding-bottom:96px;
}

/* ---------- article head ---------- */
.article-head{padding-top:12px}
.article-head h1{
  font-size:clamp(24px,3.4vw,36px);
  line-height:1.28;font-weight:700;margin:0 0 16px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:var(--weak);
  padding-bottom:22px;border-bottom:1px solid var(--line);
}
.article-meta time{font-variant-numeric:tabular-nums}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#39445A}

.article-cover{
  margin:26px 0 0;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--border);background:#0B1220;
  box-shadow:var(--shadow-card);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- article content ---------- */
.article-content{max-width:760px;padding-top:32px}
.article-content p{margin:0 0 1.2em;font-size:16.5px;line-height:1.85;color:#D6DFEE}
.article-content h2{
  font-size:clamp(20px,2.4vw,26px);line-height:1.3;font-weight:700;
  margin:42px 0 14px;
}
.article-content h2::after{content:"";display:block;width:48px;height:2px;margin-top:12px;border-radius:2px;background:linear-gradient(90deg,#22D3EE,transparent)}
.article-content h3{font-size:19px;font-weight:600;margin:32px 0 10px;color:var(--text)}
.article-content h4{font-size:17px;font-weight:600;margin:24px 0 8px;color:var(--text)}
.article-content a{color:var(--cyan);border-bottom:1px solid rgba(34,211,238,.35)}
.article-content a:hover{border-bottom-color:var(--cyan)}
.article-content strong{color:#fff;font-weight:600}
.article-content ul,.article-content ol{margin:0 0 1.4em;padding:0;list-style:none}
.article-content li{position:relative;padding-left:20px;margin-bottom:10px;font-size:16px;color:#D6DFEE;line-height:1.8}
.article-content ul li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.article-content ol{counter-reset:ol}
.article-content ol li{padding-left:32px}
.article-content ol li::before{counter-increment:ol;content:counter(ol,decimal-leading-zero);position:absolute;left:0;top:.1em;color:var(--cyan);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;background:none;width:auto;height:auto;border-radius:0}
.article-content blockquote{
  margin:0 0 1.4em;padding:18px 22px;border-radius:var(--r-md);
  background:var(--panel);border:1px solid var(--border);border-left:3px solid var(--orange);
  color:var(--muted);font-size:15.5px;
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{border-radius:var(--r-md);margin:24px auto;width:auto;max-width:100%;height:auto}
.article-content figure{margin:0 0 1.4em}
.article-content figcaption{font-size:13px;color:var(--weak);text-align:center;margin-top:10px}
.article-content table{width:100%;border-collapse:collapse;margin:0 0 1.4em;font-size:15px;display:block;overflow-x:auto}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-content th{background:rgba(255,255,255,.03);color:var(--text);font-weight:600}
.article-content hr{border:0;border-top:1px solid var(--line);margin:34px 0}
.article-content code{background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--cyan)}

.empty-state{
  text-align:center;padding:64px 24px;border-radius:var(--r-lg);
  background:var(--panel);border:1px solid var(--border);
}
.empty-state__icon{
  width:48px;height:48px;margin:0 auto 18px;border-radius:14px;
  border:1px solid var(--border);display:flex;align-items:center;justify-content:center;
  color:var(--weak);font-size:20px;
}
.empty-state p{color:var(--muted);font-size:16px;margin:0 0 22px}

/* ---------- tags ---------- */
.tag-group{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px;padding-top:26px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--muted);background:rgba(255,255,255,.03);border:1px solid var(--border);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.tag:hover{color:var(--cyan);border-color:rgba(34,211,238,.4);background:var(--cyan-soft)}

/* ---------- related ---------- */
.related{margin-top:52px;padding-top:36px;border-top:1px solid var(--line)}
.related__title{font-size:20px;font-weight:700;margin:0 0 22px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{
  display:flex;flex-direction:column;min-width:0;
  background:var(--panel);border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--border-strong);box-shadow:var(--shadow-card-hover)}
.card__media{aspect-ratio:16/10;overflow:hidden;background:#0B1220}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card__media img{transform:scale(1.03)}
.card__body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__title{
  font-size:17px;font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__text{
  font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding-top:10px;border-top:1px solid var(--line);font-size:13px;color:var(--weak);
}
.card__more{color:var(--cyan);display:inline-flex;align-items:center;gap:6px;font-size:13px}
.card__more span{transition:transform .25s ease}
.card:hover .card__more span{transform:translateX(4px)}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.side-card{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:20px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05),var(--shadow-card);
}
.side-card__title{font-size:14px;font-weight:600;color:var(--text);margin:0 0 14px}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto}
.toc-list a{
  display:block;font-size:14px;color:var(--muted);padding:7px 10px;
  border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-list a:hover{color:var(--text);background:rgba(255,255,255,.04);border-left-color:var(--cyan)}
.toc-list a.is-l3{padding-left:24px;font-size:13px;color:var(--weak)}
.side-links{display:flex;flex-direction:column}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:var(--muted);padding:11px 2px;border-bottom:1px solid var(--line);
  transition:color .2s ease,transform .2s ease;
}
.side-links a:last-child{border-bottom:0}
.side-links a:hover{color:var(--text);transform:translateX(2px)}
.side-links a i{font-style:normal;color:var(--weak);font-size:12px}
.side-card__note{font-size:13px;color:var(--weak);line-height:1.75;margin:0}

/* ---------- footer ---------- */
.site-footer{margin-top:20px;border-top:1px solid var(--line);background:rgba(255,255,255,.015);padding-top:56px}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer__brand p{color:var(--muted);font-size:14px;line-height:1.78;margin:16px 0 0;max-width:420px}
.footer__title{font-size:14px;font-weight:600;color:var(--text);margin:0 0 16px}
.footer__list{display:flex;flex-direction:column;gap:11px}
.footer__list a{font-size:14px;color:var(--muted);display:inline-block;transition:color .2s ease,transform .2s ease}
.footer__list a:hover{color:var(--text);transform:translateX(2px)}
.footer__bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:18px 0;border-top:1px solid var(--line);font-size:12px;color:var(--weak);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr;gap:32px;padding-bottom:72px}
  .sidebar{position:static;order:2}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer__brand{grid-column:1 / -1}
}
@media (max-width:768px){
  .container{padding-left:20px;padding-right:20px}
  .nav{height:64px}
  .nav__toggle{display:flex}
  .nav__link{padding:15px 4px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0}
  .nav__link.is-active::after{display:none}
  .nav__link.is-active{color:var(--cyan)}
  .nav__menu{
    position:fixed;left:0;right:0;top:64px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:12px 20px 96px;
    background:#0E1626;
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:transform .25s ease,opacity .25s ease,visibility .25s ease;
    overflow-y:auto;
  }
  .nav__menu.is-open{transform:translateY(0);opacity:1;visibility:visible}
  .logo__text{font-size:15px}
  .article-head h1{font-size:23px}
  .article-content p{font-size:16px}
  .article-content{max-width:100%}
  .card-grid{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr;gap:28px;padding-bottom:28px}
  .site-footer{padding-top:44px}
}
@media (max-width:520px){
  .article-layout{padding-bottom:56px}
  .breadcrumb .current{max-width:24ch}
  .related__title{font-size:18px}
  .btn--lg{height:44px;padding:0 20px;font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bg:#060B16;
  --bg-soft:#0E1626;
  --panel:rgba(255,255,255,.04);
  --border:rgba(120,200,255,.14);
  --border-strong:rgba(120,200,255,.30);
  --line:rgba(255,255,255,.08);
  --cyan:#22D3EE;
  --blue:#3B82F6;
  --orange:#FF7A45;
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F87171;
  --text:#E8EEF7;
  --text-2:#9AA9C0;
  --text-3:#5D6B85;
  --radius:16px;
  --radius-sm:10px;
  --radius-img:12px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-hover:0 28px 52px -24px rgba(0,0,0,.88);
  --glow:0 0 0 1px rgba(34,211,238,.5),0 8px 24px -6px rgba(34,211,238,.45);
  --container:1200px;
  --gap:24px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::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:1.85;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 480px at 10% -6%,rgba(34,211,238,.16),transparent 70%),
    radial-gradient(760px 420px at 90% -12%,rgba(59,130,246,.14),transparent 72%),
    linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed,fixed,scroll,scroll;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--cyan)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
::selection{background:rgba(34,211,238,.28);color:#fff}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- 顶部信息条 ---------- */
.topbar{
  border-bottom:1px solid var(--line);
  background:rgba(6,11,22,.88);
  font-size:13px;
  color:var(--text-3);
}
.topbar__inner{
  min-height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.topbar__domain{font-variant-numeric:tabular-nums;letter-spacing:.02em;color:var(--text-2)}
.topbar__tip{display:flex;align-items:center;gap:8px;color:var(--text-3)}
.topbar__dot{width:6px;height:6px;border-radius:999px;background:var(--ok);box-shadow:0 0 0 4px rgba(52,211,153,.14)}
.topbar__action{color:var(--cyan);font-weight:600}
.topbar__action:hover{opacity:.82}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(6,11,22,.72);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-stuck{
  background:rgba(6,11,22,.94);
  border-bottom-color:var(--line);
}
.nav{
  min-height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em}
.logo__mark{
  width:26px;height:26px;border-radius:8px;
  background:linear-gradient(140deg,#22D3EE,#3B82F6);
  box-shadow:0 6px 18px -8px rgba(34,211,238,.9);
  position:relative;flex:0 0 auto;
}
.logo__mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;
  background:#060B16;opacity:.72;
}
.logo__text{font-size:17px;line-height:1.2}
.nav__menu{display:flex;align-items:center;gap:6px}
.nav__link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
}
.nav__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--cyan);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav__link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav__link.is-active{color:var(--text);font-weight:600}
.nav__link.is-active::after{transform:scaleX(1)}
.nav__right{display:flex;align-items:center;gap:12px}
.nav__toggle{
  display:none;
  width:44px;height:44px;border-radius:10px;
  border:1px solid var(--border);
  align-items:center;justify-content:center;
  flex-direction:column;gap:5px;
}
.nav__toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav__toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__toggle.is-open span:nth-child(2){opacity:0}
.nav__toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn--primary{
  color:#fff;
  background-image:linear-gradient(90deg,#22D3EE,#3B82F6);
  box-shadow:var(--glow);
}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#fff;box-shadow:0 0 0 1px rgba(34,211,238,.6),0 14px 30px -8px rgba(34,211,238,.55)}
.btn--primary:active{transform:translateY(1px);box-shadow:none}
.btn--ghost{
  color:var(--cyan);
  border:1px solid rgba(34,211,238,.55);
  background:transparent;
}
.btn--ghost:hover{background:rgba(34,211,238,.10);color:var(--cyan);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--lg{height:52px;padding:0 30px;font-size:16px}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-size:14px;font-weight:600}
.link-more span{transition:transform .25s ease}
.link-more:hover span{transform:translateX(4px)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section__head{max-width:760px;margin-bottom:40px}
.section__eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:14px;font-weight:600;
}
.section__eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,#22D3EE,#3B82F6);border-radius:2px}
h2.section__title{font-size:clamp(22px,3vw,30px);line-height:1.3;font-weight:700}
.section__sub{margin-top:14px;color:var(--text-2);font-size:15.5px}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:64px 0 72px;
  overflow:hidden;
}
.hero__bg{
  position:absolute;inset:0;z-index:-1;
  background-image:linear-gradient(180deg,rgba(6,11,22,.72),rgba(6,11,22,.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.55;
}
.hero__inner{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--cyan)}
.crumbs__sep{opacity:.55}
.crumbs__current{color:var(--text-2)}
.hero h1{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero__lead{margin-top:18px;color:var(--text-2);font-size:16px;max-width:560px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero__metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;margin-top:38px;
  border:1px solid var(--border);border-radius:var(--radius);
  background:var(--panel);
  backdrop-filter:blur(14px) saturate(120%);
  overflow:hidden;
}
.metric{padding:18px 20px;border-right:1px solid var(--line)}
.metric:last-child{border-right:0}
.metric__value{font-size:26px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums}
.metric__value sup{font-size:13px;color:var(--text-2);margin-left:2px;font-weight:600}
.metric__label{margin-top:8px;font-size:12.5px;color:var(--text-3)}
.hero__panel{
  position:relative;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--panel);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.05);
  padding:14px;
}
.hero__panel img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--radius-img);
  background:#0E1626;
}
.hero__float{
  position:absolute;right:-10px;bottom:-18px;
  min-width:198px;padding:14px 16px;
  border-radius:14px;
  background:var(--bg-soft);
  border:1px solid var(--border);
  box-shadow:var(--shadow);
}
.hero__float b{display:block;font-size:13px;color:var(--text)}
.hero__float span{display:block;font-size:12.5px;color:var(--text-3);margin-top:6px}
.hero__float .dot{display:inline-block;width:6px;height:6px;border-radius:999px;background:var(--ok);margin-right:6px;vertical-align:middle}

/* ---------- 时间轴 + 侧卡 ---------- */
.steps{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;align-items:start}
.timeline{position:relative}
.timeline__item{position:relative;padding:0 0 34px 62px}
.timeline__item:last-child{padding-bottom:0}
.timeline__item::before{
  content:"";position:absolute;left:19px;top:42px;bottom:0;width:2px;
  background:linear-gradient(180deg,rgba(34,211,238,.5),rgba(34,211,238,0));
}
.timeline__item:last-child::before{display:none}
.timeline__node{
  position:absolute;left:0;top:0;
  width:40px;height:40px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
  color:var(--cyan);
  background:rgba(34,211,238,.10);
  border:1px solid rgba(34,211,238,.4);
  font-variant-numeric:tabular-nums;
}
.timeline__body h3{font-size:19px;font-weight:600;line-height:1.4}
.timeline__body p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:640px}
.timeline__tag{
  display:inline-block;margin-top:12px;
  height:24px;line-height:22px;padding:0 10px;
  border-radius:999px;font-size:12px;
  color:var(--orange);background:rgba(255,122,69,.12);
}
.side-card{
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--panel);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.05);
  padding:16px;
  position:sticky;top:96px;
}
.side-card img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-img);background:#0E1626;
}
.side-card h3{margin-top:18px;font-size:17px;font-weight:600}
.side-card ul{margin-top:14px;display:grid;gap:12px}
.side-card li{
  position:relative;padding-left:20px;
  font-size:14px;color:var(--text-2);line-height:1.7;
}
.side-card li::before{
  content:"";position:absolute;left:2px;top:9px;
  width:7px;height:7px;border-radius:999px;
  background:var(--cyan);box-shadow:0 0 0 4px rgba(34,211,238,.12);
}
.side-card .btn{margin-top:20px;width:100%}

/* ---------- 适配要点 ---------- */
.fit{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:center}
.fit__media{
  border:1px solid var(--border);border-radius:var(--radius);
  background:var(--panel);padding:12px;box-shadow:var(--shadow);
}
.fit__media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);background:#0E1626}
.feature-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.feature{
  border:1px solid var(--border);border-radius:14px;
  background:var(--panel);padding:20px;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--border-strong)}
.feature__ico{
  width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(34,211,238,.4);color:var(--cyan);
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.feature h3{font-size:16.5px;font-weight:600}
.feature p{margin-top:8px;font-size:14.5px;color:var(--text-2)}

/* ---------- 检查清单 ---------- */
.checklist-band{
  border:1px solid var(--border);border-radius:var(--radius);
  background:var(--panel);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.05);
  padding:36px;
}
.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 32px;margin-top:26px}
.checklist__item{
  display:flex;align-items:flex-start;gap:12px;
  padding:12px 14px;border-radius:12px;
  border:1px solid var(--line);
  font-size:14.5px;color:var(--text-2);
  transition:border-color .25s ease,background .25s ease,color .25s ease;
}
.checklist__item:hover{border-color:rgba(34,211,238,.34);background:rgba(34,211,238,.05);color:var(--text)}
.checklist__box{
  flex:0 0 auto;width:18px;height:18px;margin-top:4px;border-radius:5px;
  border:1px solid rgba(34,211,238,.5);position:relative;
}
.checklist__box::after{
  content:"";position:absolute;left:5px;top:1px;width:5px;height:10px;
  border-right:2px solid var(--cyan);border-bottom:2px solid var(--cyan);
  transform:rotate(42deg) scale(.85);
}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:920px}
.faq__item{
  border:1px solid var(--border);border-radius:14px;
  background:var(--panel);
  transition:border-color .25s ease,background .25s ease;
}
.faq__item.is-open{border-color:rgba(34,211,238,.36);background:rgba(34,211,238,.05)}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq__q:hover{color:var(--cyan)}
.faq__arrow{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .25s ease;
}
.faq__arrow::before,.faq__arrow::after{
  content:"";position:absolute;top:50%;left:50%;
  background:var(--cyan);border-radius:2px;
}
.faq__arrow::before{width:12px;height:2px;transform:translate(-50%,-50%)}
.faq__arrow::after{width:2px;height:12px;transform:translate(-50%,-50%);transition:opacity .25s ease}
.faq__item.is-open .faq__arrow{transform:rotate(180deg)}
.faq__item.is-open .faq__arrow::after{opacity:0}
.faq__a{
  max-height:0;overflow:hidden;
  transition:max-height .25s ease;
}
.faq__a p{padding:0 20px 20px;color:var(--text-2);font-size:15px}

/* ---------- 相关分类 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.cat-card{
  display:flex;flex-direction:column;
  border:1px solid var(--border);border-radius:var(--radius);
  background:var(--panel);overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--border-strong);color:inherit}
.cat-card__media{overflow:hidden}
.cat-card__media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  background:#0E1626;transition:transform .35s ease;
}
.cat-card:hover .cat-card__media img{transform:scale(1.03)}
.cat-card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge{
  display:inline-flex;align-items:center;height:23px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:600;
  color:var(--orange);background:rgba(255,122,69,.12);width:fit-content;
}
.badge--current{color:var(--cyan);background:rgba(34,211,238,.12)}
.cat-card h3{font-size:18px;font-weight:600;line-height:1.4}
.cat-card p{font-size:14.5px;color:var(--text-2);flex:1}
.cat-card .link-more{margin-top:4px}

/* ---------- CTA ---------- */
.cta-band{
  border:1px solid rgba(34,211,238,.24);
  border-radius:20px;
  background:
    radial-gradient(600px 220px at 12% 0%,rgba(34,211,238,.16),transparent 70%),
    linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(120%);
  padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.05);
}
.cta-band h2{font-size:clamp(20px,2.6vw,28px);line-height:1.35;font-weight:700;max-width:620px}
.cta-band p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:620px}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(0,0,0,0));
  padding:64px 0 28px;
}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.footer__brand p{margin-top:18px;color:var(--text-2);font-size:14.5px;max-width:420px}
.footer__title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer__list{display:grid;gap:12px}
.footer__list a{font-size:14px;color:var(--text-2)}
.footer__list a:hover{color:var(--text);transform:translateX(2px)}
.footer__bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero__inner{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px}
  .steps{grid-template-columns:minmax(0,1fr)}
  .side-card{position:static}
  .fit{grid-template-columns:minmax(0,1fr);gap:32px}
  .cat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section{padding:72px 0}
}
@media (max-width:900px){
  .nav__toggle{display:flex}
  .nav__menu{
    position:fixed;left:0;right:0;top:0;bottom:0;
    background:#0E1626;
    flex-direction:column;align-items:stretch;gap:0;
    padding:88px 20px 32px;
    transform:translateY(-10px);
    opacity:0;visibility:hidden;
    transition:transform .25s ease,opacity .25s ease,visibility .25s;
    overflow-y:auto;
    z-index:-1;
  }
  .nav__menu.is-open{transform:none;opacity:1;visibility:visible;z-index:70}
  .nav__link{
    height:54px;display:flex;align-items:center;
    padding:0;border-bottom:1px solid var(--line);
    font-size:16px;border-radius:0;
  }
  .nav__link::after{display:none}
  .nav__link.is-active{color:var(--cyan)}
  .topbar__tip{display:none}
  .hero__float{position:static;margin-top:16px;right:auto;bottom:auto}
  .checklist{grid-template-columns:minmax(0,1fr)}
  .footer__grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px}
  .footer__brand{grid-column:1 / -1}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .hero{padding:40px 0 56px}
  .hero__inner{grid-template-columns:minmax(0,1fr)}
  .hero__metrics{grid-template-columns:repeat(3,minmax(0,1fr))}
  .metric{padding:14px 12px;border-right:0;border-bottom:0}
  .metric__value{font-size:20px}
  .feature-list{grid-template-columns:minmax(0,1fr)}
  .cat-grid{grid-template-columns:minmax(0,1fr)}
  .checklist-band{padding:24px}
  .cta-band{padding:30px 24px;border-radius:16px}
  .footer__grid{grid-template-columns:minmax(0,1fr)}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .hero__panel,.side-card,.feature,.faq__item,.cat-card,.fit__media{backdrop-filter:none;-webkit-backdrop-filter:none}
  .hero__panel{background:#0E1626}
}
@media (max-width:520px){
  .logo__text{font-size:15px;max-width:150px;line-height:1.25}
  .hero h1{font-size:26px}
  .hero__metrics{grid-template-columns:minmax(0,1fr);}
  .metric{border-bottom:1px solid var(--line);padding:14px 16px}
  .metric:last-child{border-bottom:0}
  .timeline__item{padding-left:52px}
  .timeline__item::before{left:15px}
  .timeline__node{width:32px;height:32px;font-size:12px}
  .btn{width:100%}
  .hero__actions .btn,.cta-band__actions .btn{width:100%}
  .nav__right .btn--sm{display:none}
}

/* roulang page: category2 */
:root{
  --bg:#060B16;
  --bg-soft:#0E1626;
  --panel:rgba(255,255,255,.04);
  --border:rgba(120,200,255,.14);
  --cyan:#22D3EE;
  --blue:#3B82F6;
  --orange:#FF7A45;
  --success:#34D399;
  --warn:#FBBF24;
  --error:#F87171;
  --text:#E8EEF7;
  --muted:#9AA9C0;
  --weak:#5D6B85;
  --line:rgba(255,255,255,.08);
  --radius:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-hover:0 26px 52px -26px rgba(0,0,0,.92);
  --glow:0 0 0 1px rgba(34,211,238,.5),0 8px 24px -6px rgba(34,211,238,.45);
  --container:1200px;
}
*,*::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,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);
  background-size:24px 24px;
}
body::after{
  content:"";position:fixed;top:-280px;left:50%;transform:translateX(-50%);
  width:1100px;height:640px;z-index:0;pointer-events:none;
  background:radial-gradient(circle at 50% 50%,rgba(34,211,238,.15),rgba(59,130,246,.08) 45%,transparent 72%);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.005em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(34,211,238,.3);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}

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

/* ---------- 顶部信息条 ---------- */
.topbar{
  position:relative;z-index:62;background:#070D1A;border-bottom:1px solid var(--line);
  font-size:12.5px;color:var(--weak);
}
.topbar__inner{display:flex;align-items:center;gap:16px;height:36px}
.topbar__domain{font-variant-numeric:tabular-nums;letter-spacing:.02em;color:var(--muted)}
.topbar__note{flex:1;text-align:center;color:var(--weak)}
.topbar__cta{color:var(--cyan);white-space:nowrap}
.topbar__cta:hover{text-decoration:underline}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,11,22,.75);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-stuck{
  background:rgba(6,11,22,.94);
  border-bottom-color:var(--line);
  box-shadow:0 14px 30px -26px rgba(0,0,0,.95);
}
.nav{display:flex;align-items:center;gap:20px;height:70px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo__mark{
  width:28px;height:28px;border-radius:9px;position:relative;flex-shrink:0;
  background:linear-gradient(135deg,#22D3EE,#3B82F6);
  box-shadow:0 0 0 1px rgba(34,211,238,.5),0 8px 20px -8px rgba(34,211,238,.6);
}
.logo__mark::after{content:"";position:absolute;inset:8px;border-radius:3px;background:#060B16;opacity:.85}
.logo__text{font-size:16px;font-weight:700;white-space:nowrap}
.nav__menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav__link{
  position:relative;padding:10px 14px;border-radius:10px;font-size:14.5px;color:var(--muted);
  transition:color .2s ease,background .2s ease;white-space:nowrap;
}
.nav__link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav__link.is-active{color:var(--text)}
.nav__link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--blue));
}
.nav__right{display:flex;align-items:center;gap:10px;margin-left:8px}
.nav__toggle{
  display:none;width:40px;height:40px;padding:0;border-radius:var(--radius-btn);
  border:1px solid var(--border);background:rgba(255,255,255,.04);cursor:pointer;
}
.nav__toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);margin:0 auto;transition:transform .25s ease,opacity .25s ease}
.nav__toggle span+span{margin-top:5px}
.nav__toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__toggle.is-open span:nth-child(2){opacity:0}
.nav__toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn--primary{
  background:linear-gradient(90deg,#18B6D8,#2E6BE0);
  color:#fff;box-shadow:var(--glow);
}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(34,211,238,.62),0 14px 32px -8px rgba(34,211,238,.6)}
.btn--primary:active{transform:translateY(1px);box-shadow:none}
.btn--ghost{background:transparent;border-color:rgba(34,211,238,.5);color:var(--cyan)}
.btn--ghost:hover{background:rgba(34,211,238,.1);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--sm{height:36px;padding:0 16px;font-size:13.5px}
.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
  background:rgba(255,122,69,.12);color:var(--orange);border:1px solid rgba(255,122,69,.25);
}
.badge--cyan{background:rgba(34,211,238,.12);color:var(--cyan);border-color:rgba(34,211,238,.25)}
.badge--live{background:rgba(52,211,153,.12);color:var(--success);border-color:rgba(52,211,153,.3)}
.badge--wait{background:rgba(251,191,36,.12);color:var(--warn);border-color:rgba(251,191,36,.28)}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--weak);margin-bottom:22px}
.crumb a{color:var(--muted);transition:color .2s ease}
.crumb a:hover{color:var(--cyan)}
.crumb .sep{opacity:.55}
.crumb .current{color:var(--weak)}

/* ---------- Hero ---------- */
.hero{padding:56px 0 8px}
.hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center}
.hero h1{font-size:clamp(28px,4.2vw,42px);font-weight:700;line-height:1.25}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero__sub{margin-top:16px;font-size:17px;color:var(--muted);max-width:600px}
.hero__text{margin-top:14px;font-size:15px;color:var(--weak);max-width:620px;line-height:1.9}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.metrics{display:flex;flex-wrap:wrap;gap:34px;margin-top:34px}
.metric__num{font-size:26px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.metric__num span{font-size:14px;color:var(--cyan);margin-left:2px;font-weight:600}
.metric__label{font-size:12.5px;color:var(--weak);margin-top:2px}
.hero__media{
  position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);
  background:var(--panel);box-shadow:var(--shadow);aspect-ratio:16/10;
}
.hero__media img{width:100%;height:100%;object-fit:cover}
.hero__float{
  position:absolute;right:14px;bottom:14px;padding:12px 14px;border-radius:var(--radius-sm);
  background:rgba(6,11,22,.86);border:1px solid var(--border);
  backdrop-filter:blur(10px);font-size:12.5px;color:var(--muted);line-height:1.6;
}
.hero__float strong{display:block;color:#fff;font-size:15px;font-variant-numeric:tabular-nums}

/* ---------- 区块 ---------- */
.sec{padding:76px 0}
.sec--tight{padding-top:56px}
.sec__head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:30px}
.sec__title{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3}
.sec__desc{margin-top:10px;font-size:15px;color:var(--muted);max-width:720px}
.sec__more{font-size:14px;color:var(--cyan);display:inline-flex;align-items:center;gap:6px}
.sec__more .arw{transition:transform .25s ease}
.sec__more:hover .arw{transform:translateX(4px)}

/* ---------- 横向滚动卡片带 ---------- */
.rail{
  display:grid;grid-auto-flow:column;grid-auto-columns:272px;gap:16px;
  overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-track{background:rgba(255,255,255,.04);border-radius:999px}
.rail::-webkit-scrollbar-thumb{background:rgba(120,200,255,.28);border-radius:999px}
.rail__card{
  scroll-snap-align:start;background:var(--panel);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.rail__card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(120,200,255,.32)}
.rail__media{aspect-ratio:4/3;overflow:hidden;background:#0B1424}
.rail__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rail__card:hover .rail__media img{transform:scale(1.03)}
.rail__body{padding:16px}
.rail__top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.rail__title{margin:12px 0 8px;font-size:16px;font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rail__meta{font-size:12.5px;color:var(--weak);font-variant-numeric:tabular-nums}
.rail__hint{margin-top:4px;font-size:12.5px;color:var(--weak)}

/* ---------- 图文列表 ---------- */
.rows{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}
.col{display:flex;flex-direction:column}
.row{
  display:grid;grid-template-columns:172px 1fr;gap:20px;align-items:start;
  padding:24px 0;border-top:1px solid var(--line);transition:border-color .25s ease;
}
.col .row:first-child{border-top:1px solid var(--line)}
.row:hover{border-top-color:rgba(34,211,238,.3)}
.row__media{
  aspect-ratio:16/11;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border);background:#0B1424;
}
.row__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.row:hover .row__media img{transform:scale(1.04)}
.row__title{margin:0 0 8px;font-size:17px;font-weight:600;line-height:1.45}
.row__text{margin:0 0 12px;font-size:14.5px;color:var(--muted);line-height:1.8}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--cyan)}
.link-more .arw{transition:transform .25s ease}
.row:hover .link-more .arw,.link-more:hover .arw{transform:translateX(4px)}

/* ---------- 节奏时间轴 + 信息卡 ---------- */
.rhythm{display:grid;grid-template-columns:8fr 4fr;gap:40px;align-items:start}
.timeline{position:relative}
.tl{position:relative;display:grid;grid-template-columns:auto 1fr;gap:20px;padding-bottom:30px}
.tl::before{
  content:"";position:absolute;left:6px;top:20px;bottom:-2px;width:2px;
  background:linear-gradient(180deg,rgba(34,211,238,.5),rgba(34,211,238,.06));
}
.tl:last-child::before{display:none}
.tl__dot{
  width:14px;height:14px;border-radius:50%;margin-top:7px;position:relative;z-index:1;
  background:#060B16;border:2px solid var(--cyan);box-shadow:0 0 0 4px rgba(34,211,238,.12);
}
.tl__step{font-size:12px;color:var(--cyan);letter-spacing:.1em;font-variant-numeric:tabular-nums}
.tl__title{font-size:17px;font-weight:600;margin:5px 0 7px}
.tl__text{margin:0;font-size:14.5px;color:var(--muted);line-height:1.8}
.info-card{
  position:sticky;top:100px;background:var(--panel);border:1px solid var(--border);
  border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);
}
.info-card__media{aspect-ratio:4/3;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border);background:#0B1424}
.info-card__media img{width:100%;height:100%;object-fit:cover}
.info-card__title{margin:16px 0 12px;font-size:17px;font-weight:600}
.point-list{display:grid;gap:10px;margin-bottom:18px}
.point-list li{position:relative;padding-left:16px;font-size:14px;color:var(--muted);line-height:1.75}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 0 3px rgba(34,211,238,.14);
}

/* ---------- 场景 2x2 ---------- */
.grid-2x2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.scene{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.scene:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.3);box-shadow:var(--shadow-hover)}
.scene__tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:rgba(34,211,238,.1);color:var(--cyan);
  border:1px solid rgba(34,211,238,.22);
}
.scene h3{margin:14px 0 8px;font-size:17px;font-weight:600}
.scene p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.8}

/* ---------- FAQ 手风琴 ---------- */
.acc{display:grid;gap:12px;max-width:900px}
.acc__item{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:border-color .25s ease,background .25s ease;
}
.acc__item.is-open{border-color:rgba(34,211,238,.35);background:rgba(34,211,238,.045)}
.acc__head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;border:0;background:none;color:var(--text);text-align:left;
  font-size:16px;font-weight:600;line-height:1.5;cursor:pointer;
}
.acc__head:hover{color:#fff}
.acc__icon{
  position:relative;width:22px;height:22px;flex:0 0 22px;border-radius:50%;
  border:1px solid var(--border);transition:border-color .25s ease;
}
.acc__icon::before{
  content:"";position:absolute;left:50%;top:50%;width:7px;height:7px;
  border-right:2px solid var(--cyan);border-bottom:2px solid var(--cyan);
  transform:translate(-50%,-70%) rotate(45deg);transition:transform .25s ease;
}
.acc__item.is-open .acc__icon{border-color:rgba(34,211,238,.45)}
.acc__item.is-open .acc__icon::before{transform:translate(-50%,-25%) rotate(-135deg)}
.acc__panel{max-height:0;overflow:hidden;transition:max-height .25s ease}
.acc__item.is-open .acc__panel{max-height:460px}
.acc__panel p{padding:0 20px 20px;margin:0;font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;border:1px solid var(--border);
  padding:52px 40px;text-align:center;
  background:linear-gradient(120deg,rgba(34,211,238,.12),rgba(59,130,246,.07));
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:.16;
}
.cta-band>*{position:relative;z-index:1}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;line-height:1.35}
.cta-band p{margin:14px auto 0;max-width:620px;font-size:15px;color:var(--muted)}
.cta-band__actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:28px}

/* ---------- 相关分类 ---------- */
.cats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cat-card{
  display:block;padding:24px;border-radius:var(--radius);background:var(--panel);
  border:1px solid var(--border);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.cat-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.35);box-shadow:var(--shadow-hover)}
.cat-card h3{margin:14px 0 8px;font-size:17px;font-weight:600}
.cat-card p{margin:0 0 14px;font-size:14px;color:var(--muted);line-height:1.8}
.cat-card .link-more{font-size:13.5px}
.cat-card.is-current{border-color:rgba(34,211,238,.5);background:rgba(34,211,238,.06)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;margin-top:88px;padding:56px 0 26px;
  border-top:1px solid var(--line);background:rgba(255,255,255,.015);
}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.footer__brand p{margin:16px 0 0;max-width:360px;font-size:14px;color:var(--muted);line-height:1.85}
.footer__title{margin:0 0 14px;font-size:14px;font-weight:600;color:var(--text)}
.footer__list{display:grid;gap:10px}
.footer__list a{display:inline-block;font-size:14px;color:var(--muted);transition:color .2s ease,transform .2s ease}
.footer__list a:hover{color:var(--text);transform:translateX(2px)}
.footer__bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:var(--weak);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero__grid{grid-template-columns:1fr;gap:32px}
  .hero__media{aspect-ratio:16/9}
  .rows{grid-template-columns:1fr;gap:0}
  .col+.col .row:first-child{border-top:1px solid var(--line)}
  .rhythm{grid-template-columns:1fr;gap:28px}
  .info-card{position:static}
  .cats{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:900px){
  .nav{height:62px;gap:12px}
  .nav__menu{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:70;
    flex-direction:column;align-items:stretch;gap:0;
    padding:92px 20px 40px;margin-left:0;overflow-y:auto;
    background:#0E1626;border-left:1px solid var(--border);
    transform:translateX(105%);transition:transform .3s ease;
    backdrop-filter:none;
  }
  .nav__menu.is-open{transform:translateX(0)}
  .nav__link{padding:15px 12px;font-size:16px;border-radius:0;border-bottom:1px solid var(--line);line-height:1.6}
  .nav__link:hover{background:transparent}
  .nav__link.is-active{color:var(--cyan)}
  .nav__link.is-active::after{display:none}
  .nav__toggle{display:block}
  .nav__right{margin-left:auto}
  .topbar__note{display:none}
  .topbar__inner{justify-content:space-between}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .sec{padding:60px 0}
  .hero{padding:40px 0 0}
  .grid-2x2{grid-template-columns:1fr}
  .cats{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr;gap:32px}
  .cta-band{padding:40px 22px}
  .acc__panel p{padding:0 16px 18px}
  .acc__head{padding:16px;font-size:15.5px}
  .metrics{gap:24px}
  .rail{grid-auto-columns:236px}
  .row{grid-template-columns:132px 1fr;gap:16px}
}
@media (max-width:520px){
  .hero h1{font-size:26px}
  .logo__text{font-size:15px}
  .btn{height:46px;padding:0 18px;font-size:14.5px}
  .btn--sm{height:34px;padding:0 14px;font-size:13px}
  .nav__right .btn{display:none}
  .row{grid-template-columns:1fr}
  .row__media{aspect-ratio:16/9}
  .hero__float{position:static;margin:12px;background:rgba(6,11,22,.7)}
  .hero__media{aspect-ratio:4/3}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --bg:#060B16;
  --panel:rgba(255,255,255,.04);
  --panel-solid:#0E1626;
  --line:rgba(120,200,255,.14);
  --line-soft:rgba(255,255,255,.08);
  --cyan:#22D3EE;
  --cyan-deep:#3B82F6;
  --orange:#FF7A45;
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F87171;
  --text:#E8EEF7;
  --muted:#9AA9C0;
  --weak:#5D6B85;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-hover:0 26px 54px -26px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(34,211,238,.5),0 8px 24px -6px rgba(34,211,238,.45);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 480px at 12% -8%,rgba(34,211,238,.14),transparent 60%),
    radial-gradient(760px 420px at 88% 2%,rgba(255,122,69,.10),transparent 62%),
    linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed,fixed,scroll,scroll;
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--cyan);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:#7BE7F7}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:0}
p{margin:0 0 1.2em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* 顶部信息条 */
.topbar{
  position:relative;z-index:60;
  background:rgba(6,11,22,.96);
  border-bottom:1px solid var(--line-soft);
  font-size:12.5px;color:var(--weak);
}
.topbar__inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:36px;padding:6px 24px;max-width:var(--container);margin:0 auto;
}
.topbar__domain{color:var(--muted);letter-spacing:.02em}
.topbar__note{color:var(--weak);display:inline-flex;align-items:center;gap:8px}
.topbar__note::before{
  content:"";width:6px;height:6px;border-radius:999px;background:var(--cyan);
  box-shadow:0 0 0 3px rgba(34,211,238,.16);
}
.topbar__action{color:var(--cyan)}
.topbar__action:hover{text-decoration:underline}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(6,11,22,.72);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(14px) saturate(120%);
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-stuck{
  background:rgba(6,11,22,.92);
  border-bottom-color:var(--line-soft);
  box-shadow:0 16px 40px -30px rgba(0,0,0,.95);
}
.nav{display:flex;align-items:center;gap:28px;min-height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700}
.logo:hover{color:var(--text)}
.logo__mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 26px;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));
  box-shadow:0 0 0 1px rgba(34,211,238,.4),0 6px 18px -8px rgba(34,211,238,.8);
  position:relative;
}
.logo__mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;
  background:rgba(6,11,22,.85);
  clip-path:polygon(0 0,100% 50%,0 100%);
}
.logo__text{font-size:17px;letter-spacing:.01em;white-space:nowrap}
.nav__menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav__link{
  position:relative;display:inline-block;
  padding:10px 14px;border-radius:8px;
  color:var(--muted);font-size:15px;font-weight:500;
  transition:color .2s ease,background .2s ease;
}
.nav__link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav__link.is-active{color:var(--text);font-weight:600}
.nav__link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--cyan);
  box-shadow:0 0 10px rgba(34,211,238,.7);
}
.nav__right{display:flex;align-items:center;gap:12px}
.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:5px;
  background:rgba(255,255,255,.03);
}
.nav__toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .25s ease,opacity .25s ease}
.nav__toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__toggle.is-open span:nth-child(2){opacity:0}
.nav__toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn--primary{
  color:#04121A;
  background:linear-gradient(90deg,var(--cyan),var(--cyan-deep));
  box-shadow:var(--glow);
}
.btn--primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(34,211,238,.6),0 12px 30px -6px rgba(34,211,238,.6)}
.btn--primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(34,211,238,.35)}
.btn--ghost{
  color:var(--cyan);border:1px solid rgba(34,211,238,.5);
  background:rgba(34,211,238,.05);
}
.btn--ghost:hover{background:rgba(34,211,238,.12);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--link{
  color:var(--cyan);height:auto;padding:0;font-weight:600;
}
.btn--link .arrow{transition:transform .25s ease}
.btn--link:hover .arrow{transform:translateX(4px)}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
}
.badge--cat{background:rgba(255,122,69,.12);color:var(--orange)}
.badge--soft{background:rgba(34,211,238,.12);color:var(--cyan)}
.badge--ok{background:rgba(52,211,153,.14);color:var(--ok)}

/* 面包屑 */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--weak);padding:22px 0 0;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb__sep{color:var(--weak);opacity:.7}
.breadcrumb__current{color:var(--weak)}

/* 主区 */
main{display:block;padding-bottom:24px}
.section{padding:72px 0}
.section--tight{padding:44px 0}
.section__head{max-width:760px;margin-bottom:28px}
.section__eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;color:var(--cyan);
  text-transform:uppercase;margin-bottom:12px;
}
.section__eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--cyan),var(--cyan-deep))}
h2.section__title{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.section__desc{color:var(--muted);font-size:15.5px;margin:0}

/* Hero */
.hero{position:relative;padding:44px 0 24px;overflow:hidden}
.hero__grid{display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:start}
.hero h1{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.25;letter-spacing:-.01em;margin-bottom:18px;
}
.hero h1 .accent{
  background:linear-gradient(120deg,var(--cyan),#7BE7F7);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__sub{color:var(--muted);font-size:16.5px;max-width:640px;margin-bottom:26px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero__stats{display:flex;flex-wrap:wrap;gap:28px;padding-top:22px;border-top:1px solid var(--line-soft)}
.stat__value{font-size:24px;font-weight:700;color:var(--text);letter-spacing:-.02em}
.stat__label{font-size:12.5px;color:var(--weak);margin-top:2px}

.help-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.05);
  backdrop-filter:blur(14px) saturate(120%);
  padding:18px;
}
.help-card__media{position:relative;overflow:hidden;border-radius:var(--radius-img);aspect-ratio:4/3;background:#0E1626}
.help-card__media img{width:100%;height:100%;object-fit:cover}
.help-card h3{font-size:17px;margin:16px 0 10px}
.help-card__list{display:grid;gap:10px}
.help-card__list li{
  display:flex;gap:10px;font-size:14px;color:var(--muted);line-height:1.7;
}
.help-card__list li::before{
  content:"";flex:0 0 6px;width:6px;height:6px;margin-top:9px;border-radius:999px;
  background:var(--cyan);box-shadow:0 0 0 3px rgba(34,211,238,.14);
}
.help-card__meta{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--weak);
}

/* 锚点胶囊条 */
.anchor-bar{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.05);
  backdrop-filter:blur(14px) saturate(120%);
  padding:16px 18px;
}
.anchor-bar__title{font-size:13px;color:var(--weak);margin-bottom:12px;letter-spacing:.06em}
.anchor-bar__track{
  display:flex;flex-wrap:wrap;gap:10px;
}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  height:36px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--muted);font-size:14px;font-weight:500;
  transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease;
}
.pill:hover{color:var(--text);border-color:rgba(34,211,238,.5);background:rgba(34,211,238,.08);transform:translateY(-1px)}
.pill .pill__count{
  font-size:12px;color:var(--cyan);font-variant-numeric:tabular-nums;
}

/* FAQ 分组 */
.faq-group{padding:56px 0 8px}
.faq-group__head{
  display:flex;align-items:center;gap:14px;margin-bottom:20px;
}
.faq-group__index{
  font-size:13px;font-weight:700;color:var(--cyan);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;
}
.faq-group__head h2{font-size:clamp(20px,2.3vw,26px)}
.faq-group__line{flex:1;height:1px;background:var(--line-soft)}

.accordion{display:grid;gap:12px}
.acc{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.05);
  backdrop-filter:blur(14px) saturate(120%);
  overflow:hidden;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.acc:hover{border-color:rgba(120,200,255,.28)}
.acc__btn{
  width:100%;display:flex;align-items:flex-start;gap:14px;
  padding:18px 20px;text-align:left;
  color:var(--text);font-size:16px;font-weight:600;line-height:1.55;
}
.acc__btn:hover{color:#fff}
.acc__q{flex:1}
.acc__arrow{
  flex:0 0 22px;width:22px;height:22px;margin-top:2px;border-radius:999px;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform .25s ease,background .25s ease,border-color .25s ease;
}
.acc__arrow::before{
  content:"";width:7px;height:7px;border-right:2px solid var(--cyan);border-bottom:2px solid var(--cyan);
  transform:rotate(45deg) translate(-1px,-1px);
}
.acc.is-open .acc__arrow{
  transform:rotate(180deg);background:rgba(34,211,238,.14);border-color:rgba(34,211,238,.5);
}
.acc__panel{
  max-height:0;overflow:hidden;
  transition:max-height .25s ease;
}
.acc__inner{
  padding:0 20px 22px 20px;
  color:var(--muted);font-size:15px;line-height:1.85;
  border-top:1px dashed rgba(255,255,255,.08);
  padding-top:16px;
}
.acc__inner strong{color:var(--text);font-weight:600}
.acc__steps{display:grid;gap:8px;margin:14px 0 0}
.acc__steps li{
  display:flex;gap:10px;font-size:14.5px;color:var(--muted);
}
.acc__steps li span.step-no{
  flex:0 0 22px;height:22px;border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:var(--cyan);
  background:rgba(34,211,238,.12);font-variant-numeric:tabular-nums;
}
.acc__hint{
  margin-top:14px;padding:12px 14px;border-radius:10px;
  background:rgba(255,122,69,.08);border-left:3px solid var(--orange);
  color:#F0C9B6;font-size:13.5px;
}

/* 未解决 / 联系区 */
.contact-strip{
  margin-top:24px;
  display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
  padding:26px 28px;border-radius:var(--radius-card);
  background:var(--panel);border:1px solid var(--line);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.05);
  backdrop-filter:blur(14px) saturate(120%);
}
.contact-strip h3{font-size:19px;margin-bottom:8px}
.contact-strip p{margin:0;color:var(--muted);font-size:14.5px}
.contact-strip__actions{display:flex;gap:12px;flex-wrap:wrap}

/* 相关分类三宫格 */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cat-card{
  display:flex;flex-direction:column;
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.05);
  backdrop-filter:blur(14px) saturate(120%);
  padding:20px;
  color:var(--text);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(34,211,238,.34);color:var(--text)}
.cat-card__ico{
  width:40px;height:40px;border-radius:12px;margin-bottom:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.28);
  color:var(--cyan);font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.cat-card h3{font-size:18px;margin-bottom:8px}
.cat-card p{color:var(--muted);font-size:14.5px;margin:0 0 16px}
.cat-card .more{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--cyan);
}
.cat-card .more .arrow{transition:transform .25s ease}
.cat-card:hover .more .arrow{transform:translateX(4px)}

/* 相关阅读（图 + 信息 + 元行） */
.read-list{display:grid;gap:0;border-top:1px solid var(--line-soft)}
.read-item{
  display:grid;grid-template-columns:180px 1fr;gap:20px;align-items:center;
  padding:20px 0;border-bottom:1px solid var(--line-soft);
}
.read-item__media{aspect-ratio:16/10;overflow:hidden;border-radius:var(--radius-img);background:#0E1626}
.read-item__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.read-item:hover .read-item__media img{transform:scale(1.03)}
.read-item h3{font-size:17px;margin-bottom:8px}
.read-item h3 a{color:var(--text)}
.read-item h3 a:hover{color:var(--cyan)}
.read-item p{color:var(--muted);font-size:14.5px;margin:0 0 10px}
.read-item__meta{display:flex;align-items:center;gap:14px;font-size:12.5px;color:var(--weak)}

/* 底部 CTA */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(34,211,238,.10),rgba(59,130,246,.06) 55%,rgba(255,122,69,.08));
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  padding:42px 40px;
  display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--cyan-deep));
}
.cta-band h2{font-size:clamp(20px,2.4vw,27px);margin-bottom:10px}
.cta-band p{color:var(--muted);margin:0;font-size:15px;max-width:640px}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap}

/* 页脚 */
.site-footer{
  margin-top:56px;
  border-top:1px solid var(--line-soft);
  background:rgba(6,11,22,.86);
  padding:56px 0 0;
}
.footer__grid{
  display:grid;grid-template-columns:2fr 1fr 1fr;gap:36px;
  padding-bottom:36px;
}
.footer__brand p{color:var(--muted);font-size:14.5px;margin:16px 0 0;max-width:420px}
.footer__title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px}
.footer__list{display:grid;gap:10px}
.footer__list a{
  color:var(--muted);font-size:14px;width:fit-content;
  transition:color .2s ease,transform .2s ease;
}
.footer__list a:hover{color:var(--text);transform:translateX(2px)}
.footer__bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:18px 0 26px;border-top:1px solid var(--line-soft);
  font-size:12.5px;color:var(--weak);
}

/* 响应式 */
@media (max-width:1024px){
  .hero__grid{grid-template-columns:1fr;gap:26px}
  .cat-grid{grid-template-columns:1fr 1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
  .cta-band{grid-template-columns:1fr;padding:34px 28px}
  .contact-strip{grid-template-columns:1fr}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section--tight{padding:36px 0}
  .topbar__note{display:none}
  .nav{min-height:62px;gap:14px}
  .nav__toggle{display:inline-flex}
  .nav__menu{
    position:fixed;left:0;right:0;top:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:88px 20px 24px;
    background:#0E1626;
    transform:translateY(-8px);
    opacity:0;pointer-events:none;
    transition:opacity .25s ease,transform .25s ease;
    z-index:40;
  }
  .nav__menu.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav__link{padding:16px 6px;font-size:17px;border-bottom:1px solid var(--line-soft);border-radius:0}
  .nav__link.is-active::after{left:6px;right:auto;width:26px}
  .nav__right .btn--primary{display:none}
  .help-card,.anchor-bar,.acc,.contact-strip,.cat-card,.cta-band{
    backdrop-filter:none;
    background:#0E1626;
  }
  .btn--primary{box-shadow:0 0 0 1px rgba(34,211,238,.35),0 6px 18px -8px rgba(34,211,238,.35)}
  .cat-grid{grid-template-columns:1fr}
  .read-item{grid-template-columns:1fr;gap:14px}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .hero__stats{gap:20px}
  .anchor-bar__track{
    flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;
    scrollbar-width:none;
  }
  .anchor-bar__track::-webkit-scrollbar{display:none}
  .pill{flex:0 0 auto}
  .cta-band{padding:28px 22px}
  .contact-strip{padding:22px 20px}
}
@media (max-width:520px){
  .logo__text{font-size:15px;white-space:normal;line-height:1.25}
  .hero{padding:34px 0 12px}
  .hero__actions .btn{width:100%}
  .hero__actions{flex-direction:column;align-items:stretch}
  .cta-band__actions{flex-direction:column;align-items:stretch}
  .cta-band__actions .btn{width:100%}
  .contact-strip__actions{flex-direction:column;align-items:stretch}
  .contact-strip__actions .btn{width:100%}
  .acc__btn{padding:16px}
  .acc__inner{padding:14px 16px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}