/* roulang page: index */
:root{
  --bg-900:#070C16;
  --bg-800:#0B1322;
  --bg-700:#101B2E;
  --surface:rgba(146,170,255,.06);
  --surface-2:rgba(255,255,255,.04);
  --line:rgba(146,170,255,.14);
  --line-soft:rgba(255,255,255,.08);
  --primary:#35E0C0;
  --primary-deep:#12A98F;
  --accent:#FF7A5C;
  --text-100:#EAF0FF;
  --text-300:#A9B6D3;
  --text-500:#6C7A99;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-input:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75), inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 0 1px rgba(53,224,192,.35), 0 12px 34px -12px rgba(53,224,192,.45);
  --sidebar-w:236px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 520px at 78% -8%, rgba(53,224,192,.10), transparent 62%),
    radial-gradient(700px 480px at 4% 82%, rgba(255,122,92,.07), transparent 66%);
}
img{max-width:100%;display:block}
a{color:var(--text-300);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary)}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;color:var(--text-100);font-weight:700;letter-spacing:.01em}
h1{font-size:clamp(30px,4.4vw,54px);line-height:1.16}
h2{font-size:clamp(24px,2.6vw,36px);line-height:1.25}
h3{font-size:20px;line-height:1.4;font-weight:600}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
input,textarea{background:rgba(255,255,255,.04);color:var(--text-100)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(53,224,192,.28);color:#fff}
.skip{position:absolute;left:-9999px;top:0;z-index:200;background:var(--primary);color:#04140f;padding:10px 16px;border-radius:0 0 12px 0;font-weight:600}
.skip:focus{left:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- 左侧竖向导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--bg-800);
  border-right:1px solid var(--line-soft);
  padding:24px 16px;
  display:flex;flex-direction:column;
  overflow-y:auto;z-index:120;
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 20px;border-bottom:1px solid var(--line-soft)}
.brand__mark{
  width:34px;height:34px;flex:none;border-radius:11px;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  display:grid;place-items:center;color:#04140f;font-weight:800;font-size:15px;
  box-shadow:0 10px 24px -12px rgba(53,224,192,.8);
}
.brand__name{font-size:16px;font-weight:700;color:var(--text-100);line-height:1.3}
.brand__sub{display:block;font-size:11px;color:var(--text-500);letter-spacing:.14em;font-weight:500}
.nav{margin-top:20px;display:flex;flex-direction:column;gap:6px}
.nav__item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:12px;
  font-size:15px;color:var(--text-300);transition:background .2s,color .2s;
}
.nav__item:hover{background:var(--surface);color:var(--text-100)}
.nav__item.is-active{background:var(--surface);color:var(--primary);font-weight:600}
.nav__item.is-active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;border-radius:3px;background:var(--primary);
}
.nav__icon{width:18px;height:18px;flex:none;opacity:.85}
.nav__label{margin-top:26px;padding:0 12px;font-size:12px;letter-spacing:.16em;color:var(--text-500)}
.side-card{
  margin-top:auto;padding:18px;border-radius:18px;
  background:var(--surface);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);font-size:13px;color:var(--text-300);line-height:1.75;
}
.side-card strong{display:block;color:var(--text-100);font-size:14px;margin-bottom:8px}
.side-card a{color:var(--primary)}
.side-card p{margin:0 0 6px}
.side-card__reg{margin-top:12px;padding-top:12px;border-top:1px solid var(--line-soft);font-size:12px;color:var(--text-500)}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:110;height:60px;
  align-items:center;gap:12px;padding:0 16px;
  background:rgba(11,19,34,.9);border-bottom:1px solid var(--line-soft);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.topbar__brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:15px;color:var(--text-100)}
.icon-btn{
  width:40px;height:40px;flex:none;display:grid;place-items:center;
  border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--text-100);
  cursor:pointer;transition:.2s;
}
.icon-btn:hover{border-color:rgba(53,224,192,.5);color:var(--primary)}
.topbar__cta{margin-left:auto}
.scrim{
  position:fixed;inset:0;background:rgba(4,8,16,.72);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:.25s;z-index:115;
}
.scrim.show{opacity:1;visibility:visible}

/* ---------- 内容壳 ---------- */
.shell{margin-left:var(--sidebar-w);position:relative;z-index:1;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}

/* ---------- 通用组件 ---------- */
.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,box-shadow .2s,filter .2s,border-color .2s,color .2s,background .2s;
}
.btn--primary{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#04140f;box-shadow:var(--glow)}
.btn--primary:hover{color:#04140f;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(53,224,192,.5),0 16px 38px -12px rgba(53,224,192,.6)}
.btn--primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(53,224,192,.28),0 6px 16px -10px rgba(53,224,192,.4)}
.btn--ghost{background:var(--surface);border-color:var(--line);color:var(--text-100)}
.btn--ghost:hover{border-color:rgba(53,224,192,.5);color:var(--primary);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px}
.btn[disabled]{opacity:.4;pointer-events:none;box-shadow:none}
.textlink{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600}
.textlink span{transition:transform .2s}
.textlink:hover span{transform:translateX(4px)}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:13px;line-height:1;
  background:rgba(53,224,192,.12);color:var(--primary);border:1px solid rgba(53,224,192,.28);
}
.badge--accent{background:rgba(255,122,92,.14);color:var(--accent);border-color:rgba(255,122,92,.34)}
.badge--muted{background:var(--surface-2);color:var(--text-300);border-color:var(--line)}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-card);transition:border-color .25s,transform .25s;
}
.card:hover{border-color:rgba(53,224,192,.38);transform:translateY(-3px)}
.card__icon{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:rgba(53,224,192,.12);color:var(--primary);border:1px solid rgba(53,224,192,.24);
}
.card__icon svg{width:22px;height:22px}
.section{padding:96px 0;position:relative}
.section--alt{background:var(--bg-800)}
.section--tight{padding:72px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:44px}
.sec-head__text{max-width:64ch}
.sec-head h2{margin-bottom:12px}
.sec-head p{color:var(--text-300);font-size:15px}
.kicker{display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--primary);margin-bottom:12px;font-weight:600}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;display:flex;align-items:center;min-height:78vh;padding:88px 0 72px}
.hero__bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;opacity:.3;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(92deg,rgba(7,12,22,.97) 0%,rgba(7,12,22,.86) 44%,rgba(7,12,22,.52) 100%);
}
.hero__inner{
  position:relative;z-index:2;width:100%;
  display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;
}
.hero__copy{max-width:640px}
.hero h1{margin:20px 0 20px}
.hero__sub{color:var(--text-300);font-size:17px;max-width:32ch;margin-bottom:32px}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap}
.glassbar{
  margin-top:38px;display:grid;grid-template-columns:repeat(4,1fr);gap:10px;
  padding:20px;border-radius:var(--radius-card);
  background:var(--surface);border:1px solid var(--line);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
}
.glassbar__item{padding-right:10px;border-right:1px solid var(--line-soft)}
.glassbar__item:last-child{border-right:0;padding-right:0}
.glassbar__num{
  font-family:Inter,"Space Grotesk",system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:20px;font-weight:700;color:var(--primary);line-height:1.3;
}
.glassbar__label{font-size:12px;color:var(--text-500)}
.hero__media{position:relative}
.hero__card{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid var(--line);background:var(--bg-700);
  box-shadow:0 30px 70px -34px rgba(0,0,0,.9);
}
.hero__card img{width:100%;height:340px;object-fit:cover}
.hero__card figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:18px 20px;
  background:linear-gradient(to top,rgba(7,12,22,.94),rgba(7,12,22,0));
  font-size:13px;color:var(--text-300);
}
.hero__orbit{
  position:absolute;inset:-40px;border-radius:50%;pointer-events:none;
  border:1px solid rgba(53,224,192,.06);
}

/* ---------- 能力栅格 ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cap-main{
  grid-column:1 / span 2;grid-row:1 / span 2;
  display:flex;flex-direction:column;gap:18px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-card);overflow:hidden;
}
.cap-main img{width:100%;height:186px;object-fit:cover;border-radius:14px;border:1px solid var(--line-soft)}
.cap-main ul{display:grid;gap:8px;margin-top:4px}
.cap-main li{position:relative;padding-left:20px;font-size:14px;color:var(--text-300)}
.cap-main li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 0 3px rgba(53,224,192,.16);
}
.cap-card{display:flex;flex-direction:column;gap:14px}
.cap-card h3{font-size:17px}
.cap-card p{font-size:14px;color:var(--text-300);margin:0}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat__num{
  font-family:Inter,"Space Grotesk",system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:clamp(32px,3.6vw,48px);font-weight:700;color:var(--primary);line-height:1.1;
}
.stat__num small{font-size:16px;color:var(--text-300);margin-left:4px;font-weight:600}
.stat__title{margin-top:10px;font-size:15px;color:var(--text-100);font-weight:600}
.stat__desc{font-size:13px;color:var(--text-500)}
.stat-rule{height:1px;margin-top:48px;background:linear-gradient(90deg,rgba(53,224,192,.5),rgba(146,170,255,.12),transparent)}

/* ---------- 案例 ---------- */
.case-main{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-700);
  box-shadow:var(--shadow-card);margin-bottom:24px;
}
.case-main img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s ease}
.case-main::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(7,12,22,.94) 4%,rgba(7,12,22,.12) 62%);transition:background .35s}
.case-main:hover img{transform:scale(1.03)}
.case-main:hover::after{background:linear-gradient(to top,rgba(7,12,22,.96) 8%,rgba(7,12,22,.2) 66%)}
.case-main__body{position:absolute;left:0;right:0;bottom:0;padding:32px;z-index:2;max-width:70ch}
.case-main__body h3{font-size:22px;margin:12px 0 10px}
.case-main__body p{font-size:14px;color:var(--text-300);margin:0}
.case-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{display:flex;flex-direction:column;gap:12px}
.case-card h3{font-size:17px}
.case-card p{font-size:14px;color:var(--text-300);margin:0}
.tagline{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:12px;padding:3px 10px;border-radius:999px;
  background:var(--surface-2);border:1px solid var(--line);color:var(--text-300);
}

/* ---------- 方案 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.plan{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-card);position:relative;
  transition:border-color .25s,transform .25s;
}
.plan:hover{border-color:rgba(53,224,192,.38);transform:translateY(-3px)}
.plan--featured{border-color:rgba(53,224,192,.42);box-shadow:var(--glow),var(--shadow-card);padding-top:42px}
.plan__flag{position:absolute;top:16px;right:18px}
.plan h3{font-size:19px;margin-bottom:10px}
.plan__for{font-size:13px;color:var(--text-500);margin-bottom:18px}
.plan ul{display:grid;gap:10px;margin:18px 0 22px}
.plan li{position:relative;padding-left:20px;font-size:14px;color:var(--text-300)}
.plan li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;
  border-radius:2px;background:rgba(53,224,192,.7);
}
.plan--short{padding-bottom:20px}
.plan__note{font-size:13px;color:var(--text-500);border-top:1px solid var(--line-soft);padding-top:16px;margin-top:auto}

/* ---------- 最新信息 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:border-color .25s,transform .25s;
}
.post-card:hover{border-color:rgba(53,224,192,.4);transform:translateY(-3px)}
.post-card__top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.post-card h3{
  font-size:17px;line-height:1.45;margin:14px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card p{
  font-size:14px;color:var(--text-300);margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-500);
}
.post-card__link{display:block;color:inherit}
.post-card__link:hover{color:inherit}
.empty-card{
  grid-column:1 / -1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:56px 24px;border-radius:var(--radius-card);
  background:var(--surface);border:1px dashed var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.empty-card svg{width:38px;height:38px;color:var(--primary);opacity:.85}
.empty-card p{margin:0;color:var(--text-300);font-size:15px}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:920px}
.faq details{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:0 24px;transition:border-color .25s,background .25s;
}
.faq details:hover{border-color:rgba(146,170,255,.28)}
.faq details[open]{border-color:rgba(53,224,192,.42);background:rgba(53,224,192,.05)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:20px 0;font-size:16px;font-weight:600;color:var(--text-100);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";flex:none;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:18px;line-height:1;color:var(--primary);
  background:rgba(53,224,192,.12);border:1px solid rgba(53,224,192,.28);
  transition:transform .25s ease;
}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq__body{
  border-left:3px solid var(--primary);padding:2px 0 4px 16px;margin:0 0 22px;
  color:var(--text-300);font-size:15px;
}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:start}
.form-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-card);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--text-300);margin-bottom:8px}
.field input,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;border-radius:var(--radius-input);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  transition:border-color .2s,box-shadow .2s;
}
.field textarea{min-height:132px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-500)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(53,224,192,.16);
}
.field.is-error input,.field.is-error textarea{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,122,92,.14)}
.field__hint{display:none;font-size:12px;color:var(--accent);margin-top:6px}
.field.is-error .field__hint{display:block}
.form-status{
  display:none;align-items:center;gap:10px;margin-top:16px;font-size:14px;
  padding:12px 14px;border-radius:12px;
}
.form-status.show{display:flex}
.form-status.ok{background:rgba(53,224,192,.1);border:1px solid rgba(53,224,192,.34);color:var(--primary)}
.form-status.err{background:rgba(255,122,92,.1);border:1px solid rgba(255,122,92,.34);color:var(--accent)}
.info-panel{display:grid;gap:16px}
.info-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);
}
.info-item strong{display:block;font-size:13px;color:var(--text-500);font-weight:600;margin-bottom:6px;letter-spacing:.06em}
.info-item span{font-size:16px;color:var(--text-100);font-weight:600;word-break:break-all}
.info-item p{margin:8px 0 0;font-size:13px;color:var(--text-300)}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:auto;background:var(--bg-800);border-top:1px solid var(--line-soft);
  padding:64px 0 28px;
}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer__brand .brand__mark{width:30px;height:30px;border-radius:10px;font-size:13px}
.footer h4{font-size:14px;color:var(--text-100);margin-bottom:16px;letter-spacing:.04em}
.footer ul{display:grid;gap:10px}
.footer li a{font-size:14px;color:var(--text-300)}
.footer li a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.footer__desc{font-size:14px;color:var(--text-500);max-width:38ch}
.footer__contact{display:grid;gap:10px;font-size:14px;color:var(--text-300)}
.footer__contact a{color:var(--primary)}
.footer__bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-500);
}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .hero__card img{height:300px}
}
@media (max-width:1199px){
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .cap-main{grid-column:1 / -1;grid-row:auto}
  .plan-grid{grid-template-columns:repeat(2,1fr)}
  .post-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .sidebar{transform:translateX(-104%);transition:transform .3s ease;width:84vw;max-width:320px;box-shadow:0 0 60px rgba(0,0,0,.7)}
  .sidebar.open{transform:translateX(0)}
  .shell{margin-left:0}
  .topbar{display:flex}
  .hero{min-height:auto;padding:56px 0 56px}
  .hero__inner{grid-template-columns:1fr;gap:36px}
  .hero__sub{max-width:none}
  .glassbar{grid-template-columns:repeat(2,1fr);gap:14px}
  .glassbar__item:nth-child(2){border-right:0;padding-right:0}
  .stats{grid-template-columns:repeat(2,1fr);gap:28px}
  .case-row{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
  .section{padding:56px 0}
  .sec-head{margin-bottom:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .plan-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .cap-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr;gap:22px}
  .stat-rule{margin-top:32px}
  .hero__card img{height:220px}
  .case-main__body{padding:22px;position:static;background:rgba(7,12,22,.9)}
  .case-main::after{display:none}
  .form-panel{padding:22px}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer{padding:48px 0 24px}
}
@media (max-width:520px){
  h1{font-size:28px}
  .btn{width:100%}
  .hero__cta{flex-direction:column}
  .topbar__cta .btn{width:auto;height:38px;padding:0 14px;font-size:13px}
  .glassbar{grid-template-columns:1fr}
  .glassbar__item{border-right:0;padding-right:0;border-bottom:1px solid var(--line-soft);padding-bottom:10px}
  .glassbar__item:last-child{border-bottom:0;padding-bottom:0}
  .faq details{padding:0 18px}
}

/* roulang page: article */
:root{
  --bg-900:#070C16;
  --bg-800:#0B1322;
  --bg-700:#101B2E;
  --surface:rgba(146,170,255,.06);
  --surface-2:rgba(255,255,255,.04);
  --line:rgba(146,170,255,.14);
  --line-soft:rgba(255,255,255,.08);
  --primary:#35E0C0;
  --primary-deep:#12A98F;
  --accent:#FF7A5C;
  --text-100:#EAF0FF;
  --text-300:#A9B6D3;
  --text-500:#6C7A99;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 0 0 1px rgba(53,224,192,.35), 0 12px 34px -12px rgba(53,224,192,.45);
  --sidebar-w:236px;
  --font:"HarmonyOS Sans SC","PingFang 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;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text-300);
  background:
    radial-gradient(1100px 600px at 88% -10%, rgba(53,224,192,.10), transparent 62%),
    radial-gradient(900px 520px at 4% 8%, rgba(255,122,92,.06), transparent 60%),
    var(--bg-900);
  min-height:100vh;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block}
a{color:var(--text-300);text-decoration:none;transition:color .22s ease, border-color .22s ease, background-color .22s ease}
a:hover{color:var(--primary)}
h1,h2,h3,h4{color:var(--text-100);margin:0;font-weight:700;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(53,224,192,.28);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:64px 0}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:linear-gradient(180deg,var(--bg-800),#080F1C 88%);
  border-right:1px solid var(--line);
  padding:24px 18px 28px;
  display:flex;flex-direction:column;gap:22px;
  overflow-y:auto;z-index:60;
  transform:translateX(-100%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
}
.sidebar.is-open{transform:translateX(0)}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(146,170,255,.22);border-radius:99px}
.brand{display:flex;align-items:center;gap:11px}
.brand__mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  color:#04140F;font-weight:800;font-size:17px;
  box-shadow:0 8px 22px -10px rgba(53,224,192,.8);
}
.brand__name{display:block;color:var(--text-100);font-size:15.5px;font-weight:700;line-height:1.3;letter-spacing:.02em}
.brand__sub{display:block;color:var(--text-500);font-size:10.5px;letter-spacing:.16em;line-height:1.4}
.nav{display:flex;flex-direction:column;gap:4px}
.nav__item{
  position:relative;display:flex;align-items:center;gap:11px;
  height:44px;padding:0 12px;border-radius:12px;
  font-size:15px;color:var(--text-300);
  border:1px solid transparent;
}
.nav__item:hover{background:var(--surface);color:var(--text-100);border-color:var(--line)}
.nav__item.is-active{color:var(--primary);background:rgba(53,224,192,.08);border-color:rgba(53,224,192,.24)}
.nav__item.is-active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:99px;background:var(--primary)}
.nav__icon{width:18px;height:18px;flex:0 0 18px}
.nav__label{margin:4px 0 -8px;font-size:12px;letter-spacing:.18em;color:var(--text-500)}
.side-card{
  margin-top:auto;padding:18px;border-radius:var(--radius-card);
  background:var(--surface);border:1px solid var(--line);
  backdrop-filter:blur(10px);box-shadow:var(--shadow-card);
  font-size:13px;line-height:1.9;color:var(--text-300);
}
.side-card strong{display:block;color:var(--text-100);font-size:14.5px;margin-bottom:8px}
.side-card a{color:var(--primary)}
.side-card a:hover{text-decoration:underline;text-underline-offset:4px}
.side-card__reg{margin-top:12px;padding-top:12px;border-top:1px solid var(--line-soft);font-size:11.5px;color:var(--text-500);letter-spacing:.02em}
.scrim{
  position:fixed;inset:0;background:rgba(4,8,16,.72);
  backdrop-filter:blur(4px);opacity:0;pointer-events:none;
  transition:opacity .3s ease;z-index:55;
}
.scrim.is-open{opacity:1;pointer-events:auto}

/* ============ 移动顶栏 ============ */
.topbar{
  position:fixed;top:0;left:0;right:0;height:60px;z-index:50;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px;background:rgba(9,15,28,.92);
  border-bottom:1px solid var(--line);backdrop-filter:blur(14px);
}
.topbar__brand{display:flex;align-items:center;gap:9px;min-width:0}
.topbar__brand .brand__mark{width:32px;height:32px;flex:0 0 32px;border-radius:10px;font-size:15px}
.topbar__brand .brand__name{font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.menu-btn{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface-2);display:flex;align-items:center;justify-content:center;
  color:var(--text-100);flex:0 0 40px;
}
.menu-btn:hover{border-color:rgba(53,224,192,.4);color:var(--primary)}
.menu-btn svg{width:19px;height:19px}
.topbar__cta{
  height:38px;padding:0 15px;border-radius:var(--radius-pill);
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04140F;font-size:13.5px;font-weight:700;
  display:inline-flex;align-items:center;white-space:nowrap;
  box-shadow:0 8px 20px -12px rgba(53,224,192,.9);
}
.topbar__cta:hover{color:#04140F;filter:brightness(1.06)}

.page{padding-top:60px}
@media (min-width:1024px){
  .sidebar{transform:none !important}
  .scrim{display:none}
  .topbar{display:none}
  .page{padding-top:0;margin-left:var(--sidebar-w)}
  .container{max-width:1200px}
}
@media (min-width:1440px){
  .page .container{max-width:1280px}
}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-500);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-300)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb__sep{color:rgba(53,224,192,.6)}
.breadcrumb__now{color:var(--text-100)}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;padding:64px 0 56px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(16,27,46,.86),rgba(7,12,22,.96));
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center right;
  opacity:.22;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,12,22,.96) 0%,rgba(7,12,22,.78) 52%,rgba(7,12,22,.55) 100%);
}
.article-hero .container{position:relative;z-index:1}
.article-hero h1{
  font-size:clamp(28px,4vw,46px);line-height:1.2;font-weight:700;
  max-width:22ch;margin:14px 0 20px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13.5px;color:var(--text-500)}
.article-meta__dot{width:4px;height:4px;border-radius:50%;background:rgba(53,224,192,.7);display:inline-block}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.03em;
  background:rgba(53,224,192,.12);color:var(--primary);
  border:1px solid rgba(53,224,192,.3);
}
.badge--accent{background:rgba(255,122,92,.12);color:var(--accent);border-color:rgba(255,122,92,.32)}
.badge--soft{background:var(--surface-2);color:var(--text-300);border-color:var(--line)}

/* ============ 文章布局 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:52px}
}
.article-body{
  max-width:760px;font-size:16.5px;line-height:1.9;color:var(--text-300);
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(21px,2.2vw,27px);line-height:1.35;margin:44px 0 16px;
  padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:99px;
  background:linear-gradient(180deg,var(--primary),rgba(53,224,192,.15));
}
.article-body h3{font-size:19px;line-height:1.5;margin:32px 0 12px;color:var(--text-100)}
.article-body h4{font-size:16.5px;margin:24px 0 10px;color:var(--text-100)}
.article-body p{margin:0 0 20px}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:2px;display:flex;flex-direction:column;gap:9px;counter-reset:li}
.article-body ul li{position:relative;padding-left:22px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:50%;
  background:rgba(53,224,192,.85);box-shadow:0 0 10px rgba(53,224,192,.6);
}
.article-body ol li{position:relative;padding-left:30px;counter-increment:li}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:2px;font-size:12.5px;font-weight:700;
  color:var(--accent);letter-spacing:.04em;font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:26px 0;padding:16px 20px;border-left:3px solid var(--primary);
  background:rgba(53,224,192,.07);border-radius:0 14px 14px 0;
  color:var(--text-100);font-size:15.8px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:26px 0;border:1px solid var(--line)}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.article-body strong{color:var(--text-100);font-weight:700}
.article-body hr{border:0;height:1px;background:var(--line-soft);margin:36px 0}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
  display:block;overflow-x:auto;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;white-space:nowrap}
.article-body th{background:rgba(146,170,255,.08);color:var(--text-100);font-weight:600}
.article-body pre{
  margin:26px 0;padding:18px;border-radius:14px;overflow-x:auto;
  background:#060B14;border:1px solid var(--line);color:#C7D3EE;
  font-size:13.5px;line-height:1.75;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.article-body :not(pre) > code{
  background:rgba(53,224,192,.12);color:#8FF0DC;
  padding:2px 6px;border-radius:6px;font-size:.9em;
}

/* ============ 侧栏 ============ */
.article-side{display:flex;flex-direction:column;gap:20px}
@media (min-width:1024px){
  .article-side{position:sticky;top:32px;align-self:start;max-height:calc(100vh - 64px);overflow:auto;padding-right:4px}
}
.side-panel{
  padding:22px;border-radius:var(--radius-card);
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.side-panel h3{font-size:15.5px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-panel h3::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 10px rgba(53,224,192,.8);
}
.side-links{display:flex;flex-direction:column;gap:2px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--text-300);
  border:1px solid transparent;
}
.side-links a:hover{background:var(--surface-2);border-color:var(--line);color:var(--primary)}
.side-links a span{color:var(--text-500);font-size:12.5px}
.side-panel--glass{
  background:linear-gradient(160deg,rgba(53,224,192,.10),rgba(255,255,255,.03));
  backdrop-filter:blur(10px);border-color:rgba(53,224,192,.24);
}
.side-panel__list{display:flex;flex-direction:column;gap:10px;font-size:14px;line-height:1.75}
.side-panel__list a{color:var(--primary)}
.side-panel__list a:hover{text-decoration:underline;text-underline-offset:4px}
.side-note{font-size:13px;color:var(--text-500);line-height:1.8}

/* ============ 空态 ============ */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  padding:56px 28px;border-radius:var(--radius-card);
  background:var(--surface);border:1px dashed var(--line);
}
.empty-state__icon{
  width:52px;height:52px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:rgba(53,224,192,.12);color:var(--primary);
}
.empty-state h2{font-size:20px}
.empty-state p{font-size:14.5px;color:var(--text-500);max-width:42ch}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.02em;border:1px solid transparent;
  transition:transform .2s ease, box-shadow .2s ease, filter .2s ease, background-color .2s ease, border-color .2s ease;
}
.btn--primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04140F;box-shadow:var(--shadow-glow);
}
.btn--primary:hover{color:#04140F;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(53,224,192,.5),0 16px 40px -14px rgba(53,224,192,.6)}
.btn--primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(53,224,192,.3)}
.btn--ghost{
  background:var(--surface-2);border-color:var(--line);color:var(--text-100);
  backdrop-filter:blur(8px);
}
.btn--ghost:hover{border-color:rgba(53,224,192,.42);color:var(--primary);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--text{padding:0;height:auto;color:var(--primary)}
.btn--text svg{width:16px;height:16px;transition:transform .22s ease}
.btn--text:hover svg{transform:translateX(4px)}
.btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}

/* ============ 相关推荐 ============ */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.4vw,32px);line-height:1.3}
.section-head p{font-size:14.5px;color:var(--text-500);margin-top:10px;max-width:60ch}
.grid-cards{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:640px){.grid-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.grid-cards{grid-template-columns:repeat(3,minmax(0,1fr))}}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--radius-card);background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.card:hover{border-color:rgba(53,224,192,.34);transform:translateY(-3px)}
.card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-700)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card__media img{transform:scale(1.03)}
.card__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,22,0) 40%,rgba(7,12,22,.72));
  transition:background .3s ease;
}
.card:hover .card__media::after{background:linear-gradient(180deg,rgba(7,12,22,.06) 35%,rgba(7,12,22,.82))}
.card__tag{position:absolute;top:14px;left:14px;z-index:1}
.card__body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card__body h3{font-size:17.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__body p{font-size:14.5px;line-height:1.8;color:var(--text-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__meta{margin-top:auto;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(--text-500)}
.card__meta span:last-child{color:var(--primary)}

/* ============ 上/下一篇 ============ */
.prevnext{display:grid;grid-template-columns:1fr;gap:16px;margin-top:52px}
@media (min-width:768px){.prevnext{grid-template-columns:repeat(2,minmax(0,1fr))}}
.prevnext__item{
  display:flex;flex-direction:column;gap:8px;padding:22px 24px;
  border-radius:var(--radius-card);background:var(--surface-2);
  border:1px solid var(--line);transition:border-color .24s ease, transform .24s ease;
}
.prevnext__item:hover{border-color:rgba(53,224,192,.36);transform:translateY(-2px)}
.prevnext__label{font-size:12.5px;letter-spacing:.14em;color:var(--text-500)}
.prevnext__item strong{color:var(--text-100);font-size:16px;font-weight:600}
.prevnext__item span{font-size:13.5px;color:var(--text-500)}
.prevnext__item--end{text-align:right;align-items:flex-end}

/* ============ CTA ============ */
.cta-band{
  border-radius:24px;padding:48px 40px;
  background:linear-gradient(140deg,rgba(53,224,192,.12),rgba(255,122,92,.06) 62%,rgba(255,255,255,.02));
  border:1px solid var(--line);backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:1fr;gap:26px;align-items:center;
}
@media (min-width:900px){.cta-band{grid-template-columns:1.5fr 1fr;padding:52px 54px}}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;margin-bottom:14px}
.cta-band p{font-size:15px;color:var(--text-300);max-width:56ch}
.cta-band__side{display:flex;flex-direction:column;gap:12px;font-size:14px;color:var(--text-300)}
.cta-band__side a{color:var(--primary)}
.cta-band__side a:hover{text-decoration:underline;text-underline-offset:4px}

/* ============ 页脚 ============ */
.footer{
  margin-top:20px;padding:72px 0 32px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,19,34,.6),rgba(7,12,22,.95));
}
.footer__grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:640px){.footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer__grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:44px}}
.footer__brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer__brand .brand__name{font-size:16px}
.footer__desc{font-size:14px;line-height:1.85;color:var(--text-500);max-width:38ch}
.footer h4{font-size:14px;color:var(--text-100);margin-bottom:16px;letter-spacing:.04em}
.footer ul{display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer ul a{color:var(--text-300)}
.footer ul a:hover{color:var(--primary)}
.footer__contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-300)}
.footer__contact a{color:var(--primary)}
.footer__contact a:hover{text-decoration:underline;text-underline-offset:4px}
.footer__bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:var(--text-500);
}

/* ============ 移动补丁 ============ */
@media (max-width:1023px){
  .section{padding:64px 0}
  .article-hero{padding:48px 0 42px}
  .cta-band{padding:36px 26px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .section{padding:52px 0}
  .article-body{font-size:16px}
  .btn{width:100%}
  .topbar__cta{height:36px;padding:0 13px;font-size:13px}
  .article-hero h1{max-width:100%}
}

/* roulang page: category1 */
:root{
  --bg-900:#070C16;
  --bg-800:#0B1322;
  --bg-700:#101B2E;
  --surface:rgba(146,170,255,.06);
  --surface-2:rgba(255,255,255,.04);
  --line:rgba(255,255,255,.08);
  --line-2:rgba(146,170,255,.14);
  --primary:#35E0C0;
  --primary-deep:#12A98F;
  --accent:#FF7A5C;
  --text-100:#EAF0FF;
  --text-300:#A9B6D3;
  --text-500:#6C7A99;
  --r-card:18px;
  --r-btn:12px;
  --r-input:12px;
  --r-badge:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-inset:inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 0 1px rgba(53,224,192,.35),0 12px 34px -12px rgba(53,224,192,.45);
  --sidebar-w:236px;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Space Grotesk",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(1200px 640px at 82% -8%, rgba(53,224,192,.10), transparent 62%),
    radial-gradient(900px 520px at 6% 105%, rgba(146,170,255,.08), transparent 60%),
    var(--bg-900);
  color:var(--text-100);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--text-300);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
a:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
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{margin:0;font-weight:700;letter-spacing:.01em;line-height:1.25}
p{margin:0}
strong{color:var(--text-100)}
::selection{background:rgba(53,224,192,.28)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 侧栏导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;z-index:60;
  width:var(--sidebar-w);height:100vh;
  display:flex;flex-direction:column;gap:8px;
  padding:26px 18px 20px;
  background:var(--bg-800);
  border-right:1px solid var(--line);
  overflow-y:auto;overscroll-behavior:contain;
  transition:transform .3s ease;
}
.brand{display:flex;align-items:center;gap:12px;padding:6px 8px 18px;border-bottom:1px solid var(--line);text-decoration:none}
.brand:hover{text-decoration:none;color:inherit}
.brand__mark{
  flex:none;width:40px;height:40px;border-radius:14px;
  display:grid;place-items:center;
  font-size:18px;font-weight:700;color:#04140F;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  box-shadow:0 10px 26px -14px rgba(53,224,192,.8),var(--shadow-inset);
}
.brand__name{display:block;font-size:16px;font-weight:700;color:var(--text-100);letter-spacing:.02em}
.brand__sub{display:block;font-size:11px;letter-spacing:.16em;color:var(--text-500);font-family:var(--font-num)}
.nav{display:flex;flex-direction:column;gap:4px;margin-top:16px}
.nav__item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:var(--r-btn);
  font-size:15px;color:var(--text-300);
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.nav__item:hover{background:var(--surface);color:var(--text-100);text-decoration:none;border-color:var(--line-2)}
.nav__item.is-active{
  background:var(--surface);color:var(--primary);border-color:var(--line-2);
}
.nav__item.is-active::before{
  content:"";position:absolute;left:-18px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 14px rgba(53,224,192,.7);
}
.nav__icon{flex:none;width:18px;height:18px;color:currentColor;opacity:.9}
.nav__label{margin:18px 0 8px;padding-left:14px;font-size:12px;letter-spacing:.14em;color:var(--text-500)}
.side-card{
  margin-top:auto;
  padding:18px;border-radius:var(--r-card);
  background:var(--surface);
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card),var(--shadow-inset);
  backdrop-filter:blur(12px);
  font-size:13px;color:var(--text-300);line-height:1.7;
}
.side-card strong{display:block;margin-bottom:8px;font-size:14px;color:var(--text-100)}
.side-card p{margin-bottom:4px}
.side-card a{color:var(--text-300)}
.side-card a:hover{color:var(--primary)}
.side-card__reg{margin-top:12px;padding-top:12px;border-top:1px dashed var(--line);font-size:12px;color:var(--text-500)}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;
  position:sticky;top:0;z-index:70;
  height:60px;padding:0 16px;
  align-items:center;gap:12px;
  background:rgba(11,19,34,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
}
.topbar__btn{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;gap:4px;align-content:center;
  background:var(--surface-2);border:1px solid var(--line-2);
}
.topbar__btn span{display:block;width:16px;height:2px;border-radius:2px;background:var(--text-100)}
.topbar__brand{display:flex;align-items:center;gap:10px;flex:1;min-width:0;text-decoration:none}
.topbar__brand .brand__mark{width:30px;height:30px;border-radius:10px;font-size:14px}
.topbar__brand .brand__name{font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.scrim{
  position:fixed;inset:0;z-index:55;
  background:rgba(4,8,16,.72);
  backdrop-filter:blur(4px);
  opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.scrim.is-open{opacity:1;pointer-events:auto}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 22px;height:48px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{text-decoration:none}
.btn--primary{
  color:#04140F;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--glow);
}
.btn--primary:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(53,224,192,.5),0 18px 40px -14px rgba(53,224,192,.6)}
.btn--primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(53,224,192,.25)}
.btn--ghost{
  color:var(--text-100);
  background:var(--surface-2);
  border-color:var(--line-2);
  backdrop-filter:blur(10px);
}
.btn--ghost:hover{transform:translateY(-1px);border-color:rgba(53,224,192,.5);color:var(--primary);box-shadow:0 12px 34px -18px rgba(53,224,192,.6)}
.btn--ghost:active{transform:translateY(1px)}
.btn--sm{height:40px;padding:0 16px;font-size:14px;border-radius:11px}
.btn[disabled]{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-weight:600;font-size:14px;
}
.link-more::after{content:"→";transition:transform .2s ease}
.link-more:hover{text-decoration:none}
.link-more:hover::after{transform:translateX(4px)}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--text-500);
}
.crumbs a{color:var(--text-300)}
.crumbs a:hover{color:var(--primary)}
.crumbs span.sep{color:rgba(53,224,192,.7)}
.crumbs .current{color:var(--text-100)}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:64px 0 72px;border-bottom:1px solid var(--line)}
.hero__bg{
  position:absolute;inset:0;z-index:0;
  background-image:
    linear-gradient(90deg,rgba(7,12,22,.97) 0%,rgba(7,12,22,.86) 42%,rgba(7,12,22,.42) 100%),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center right;
  opacity:.9;
}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(700px 380px at 88% 22%, rgba(53,224,192,.16), transparent 70%);
}
.hero .container{position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  margin:26px 0 14px;padding:6px 14px;
  border-radius:var(--r-badge);
  font-size:13px;letter-spacing:.06em;color:var(--primary);
  background:rgba(53,224,192,.08);
  border:1px solid rgba(53,224,192,.28);
}
.hero h1{font-size:clamp(30px,4.4vw,54px);line-height:1.16;font-weight:700}
.hero__lead{
  max-width:68ch;margin-top:18px;
  font-size:17px;line-height:1.9;color:var(--text-300);
}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;
  margin-top:44px;padding:22px 26px;
  border-radius:var(--r-card);
  background:var(--surface);
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card),var(--shadow-inset);
  backdrop-filter:blur(14px);
}
.stat__num{font-family:var(--font-num);font-size:clamp(24px,2.4vw,34px);font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.2}
.stat__label{font-size:13px;color:var(--text-500);margin-top:4px}

/* ============ 通用区块 ============ */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--alt{background:linear-gradient(180deg,transparent,rgba(146,170,255,.035) 40%,transparent)}
.section__head{max-width:760px;margin-bottom:44px}
.section__head h2{font-size:clamp(24px,2.6vw,36px);line-height:1.25}
.section__head p{margin-top:14px;color:var(--text-300);max-width:68ch}
.divider{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,rgba(53,224,192,.5),transparent)}

/* ============ Zigzag ============ */
.zig{display:flex;flex-direction:column;gap:76px}
.zig__row{display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center}
.zig__row--rev .zig__media{order:2}
.zig__media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card);
  background:var(--bg-700);
}
.zig__media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s ease}
.zig__media:hover img{transform:scale(1.03)}
.zig__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,22,0) 45%,rgba(7,12,22,.55));
  pointer-events:none;
}
.zig__tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:var(--r-badge);
  font-size:12px;letter-spacing:.08em;color:var(--accent);
  background:rgba(255,122,92,.1);border:1px solid rgba(255,122,92,.3);
}
.zig__body h2{margin:14px 0 16px;font-size:clamp(22px,2.2vw,30px)}
.zig__body p{color:var(--text-300);margin-bottom:14px;max-width:68ch}
.point-list{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.point-list li{
  position:relative;padding-left:22px;
  font-size:15px;color:var(--text-300);
}
.point-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:8px;height:8px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 12px rgba(53,224,192,.6);
}

/* ============ 亮点数据横条 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
  padding:34px 0;border-top:1px solid var(--line);
}
.metric{border-left:1px solid var(--line);padding-left:22px}
.metric:first-child{border-left:0;padding-left:0}
.metric__num{font-family:var(--font-num);font-size:clamp(26px,2.8vw,40px);font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.15}
.metric__label{font-size:14px;color:var(--text-500);margin-top:6px}

/* ============ 场景卡 ============ */
.cards{display:grid;gap:24px}
.cards--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cards--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{
  padding:26px;
  border-radius:var(--r-card);
  background:linear-gradient(180deg,var(--bg-700),rgba(16,27,46,.6));
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card),var(--shadow-inset);
  transition:border-color .22s ease,transform .22s ease;
}
.card:hover{border-color:rgba(53,224,192,.45);transform:translateY(-2px)}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--text-300);font-size:15px}
.card__icon{
  width:42px;height:42px;border-radius:13px;margin-bottom:16px;
  display:grid;place-items:center;
  background:rgba(53,224,192,.1);
  border:1px solid rgba(53,224,192,.3);
  color:var(--primary);
}
.card__icon svg{width:20px;height:20px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;
  background:rgba(53,224,192,.1);color:var(--primary);
  border:1px solid rgba(53,224,192,.3);
}
.badge--accent{background:rgba(255,122,92,.12);color:var(--accent);border-color:rgba(255,122,92,.32)}

/* ============ 阶梯流程 ============ */
.steps{position:relative;display:flex;flex-direction:column;gap:22px;padding-left:36px}
.steps::before{
  content:"";position:absolute;left:11px;top:12px;bottom:12px;width:1px;
  background:linear-gradient(180deg,rgba(53,224,192,.6),rgba(146,170,255,.18));
}
.step{position:relative}
.step::before{
  content:"";position:absolute;left:-31px;top:26px;
  width:11px;height:11px;border-radius:50%;
  background:var(--bg-900);border:2px solid var(--primary);
  box-shadow:0 0 12px rgba(53,224,192,.7);
}
.step__card{
  padding:22px 24px;border-radius:var(--r-card);
  background:var(--surface-2);
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card),var(--shadow-inset);
  transition:border-color .22s ease,background .22s ease;
}
.step__card:hover{border-color:rgba(53,224,192,.4);background:var(--surface)}
.step__num{font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--accent)}
.step__card h3{font-size:18px;margin:6px 0 8px}
.step__card p{color:var(--text-300);font-size:15px}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq__item{
  border-radius:var(--r-card);
  background:var(--surface-2);
  border:1px solid var(--line-2);
  overflow:hidden;
  transition:border-color .22s ease,background .22s ease;
}
.faq__item[open]{border-color:rgba(53,224,192,.42);background:var(--surface)}
.faq__item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 24px;
  font-size:16px;font-weight:600;color:var(--text-100);
  border-left:3px solid transparent;
  transition:border-color .22s ease,color .22s ease;
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{
  content:"+";flex:none;font-size:22px;line-height:1;font-weight:400;
  color:var(--primary);transition:transform .25s ease;
}
.faq__item[open] summary{border-left-color:var(--primary)}
.faq__item[open] summary::after{transform:rotate(45deg)}
.faq__item summary:hover{color:var(--primary)}
.faq__item summary:focus-visible{outline:2px solid var(--primary);outline-offset:-2px}
.faq__body{padding:0 24px 22px 27px;color:var(--text-300);font-size:15px;max-width:70ch}

/* ============ CTA ============ */
.cta{
  position:relative;overflow:hidden;
  padding:52px 48px;border-radius:26px;
  background:
    radial-gradient(700px 320px at 88% 10%, rgba(53,224,192,.16), transparent 68%),
    linear-gradient(140deg,rgba(16,27,46,.95),rgba(11,19,34,.9));
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card),var(--shadow-inset);
}
.cta__grid{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.cta h2{font-size:clamp(23px,2.4vw,32px)}
.cta p{margin-top:14px;color:var(--text-300);max-width:60ch}
.cta__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.cta__side{
  padding:24px;border-radius:var(--r-card);
  background:var(--surface);
  border:1px solid var(--line-2);
  backdrop-filter:blur(12px);
  font-size:15px;color:var(--text-300);
}
.cta__side strong{display:block;color:var(--text-100);margin-bottom:10px;font-size:16px}
.cta__side p{margin-bottom:6px}
.cta__side a{color:var(--primary)}

/* ============ 页脚 ============ */
.footer{
  margin-top:0;padding:68px 0 34px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,19,34,.6),rgba(7,12,22,1));
}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer__brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer__brand .brand__mark{width:36px;height:36px;border-radius:12px;font-size:16px}
.footer__brand .brand__name{font-size:16px;font-weight:700;color:var(--text-100)}
.footer__desc{color:var(--text-500);font-size:14px;max-width:36ch}
.footer h4{font-size:15px;margin-bottom:16px;color:var(--text-100)}
.footer ul{display:flex;flex-direction:column;gap:10px}
.footer ul a{font-size:14px;color:var(--text-500)}
.footer ul a:hover{color:var(--primary)}
.footer__contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-500)}
.footer__contact a{color:var(--text-500)}
.footer__contact a:hover{color:var(--primary)}
.footer__bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-500);
}

/* ============ 响应式 ============ */
@media (min-width:1024px){
  body{padding-left:var(--sidebar-w)}
}
@media (min-width:1440px){
  .container{max-width:1280px}
}
@media (max-width:1023px){
  .topbar{display:flex}
  .sidebar{transform:translateX(-100%);width:84vw;max-width:320px;box-shadow:0 0 60px rgba(0,0,0,.6)}
  .sidebar.is-open{transform:translateX(0)}
  .nav__item.is-active::before{left:-18px}
  .zig__row{grid-template-columns:1fr;gap:28px}
  .zig__row--rev .zig__media{order:0}
  .cta__grid{grid-template-columns:1fr;gap:28px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .cards--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .metric:nth-child(3){border-left:0;padding-left:0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .hero{padding:34px 0 52px}
  .hero__lead{font-size:16px}
  .stats{grid-template-columns:1fr 1fr;padding:18px}
  .cards--3,.cards--2{grid-template-columns:1fr}
  .cta{padding:32px 22px;border-radius:20px}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer__bottom{flex-direction:column}
  .zig{gap:56px}
  .metrics{grid-template-columns:1fr 1fr;gap:22px}
  .metric{padding-left:16px}
  .metric:nth-child(odd){border-left:0;padding-left:0}
  .steps{padding-left:28px}
}
@media (max-width:519px){
  .hero h1{font-size:28px}
  .stats{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr}
  .metric{border-left:0;padding-left:0}
  .hero__actions .btn{width:100%}
  .faq__item summary{padding:16px 18px;font-size:15px}
  .faq__body{padding:0 18px 18px 21px}
}

/* roulang page: category2 */
:root{
  --bg-900:#070C16;
  --bg-800:#0B1322;
  --bg-700:#101B2E;
  --surface:rgba(146,170,255,.06);
  --surface-2:rgba(255,255,255,.04);
  --line:rgba(255,255,255,.08);
  --line-2:rgba(146,170,255,.14);
  --primary:#35E0C0;
  --primary-dark:#12A98F;
  --accent:#FF7A5C;
  --text-100:#EAF0FF;
  --text-300:#A9B6D3;
  --text-500:#6C7A99;
  --radius-card:18px;
  --radius-btn:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75), inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 0 1px rgba(53,224,192,.35), 0 12px 34px -12px rgba(53,224,192,.45);
  --container:1200px;
  --side:236px;
  --font:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",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-100);
  background:var(--bg-900);
  background-image:
    radial-gradient(900px 520px at 88% -8%,rgba(53,224,192,.10),transparent 62%),
    radial-gradient(760px 460px at -6% 22%,rgba(255,122,92,.07),transparent 60%);
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--text-300);text-decoration:none;transition:color .22s ease,opacity .22s ease}
a:hover{color:var(--primary)}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text-100);letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.skip{position:absolute;left:-9999px;top:0;background:var(--primary);color:#04211C;padding:10px 16px;border-radius:0 0 12px 0;z-index:200}
.skip:focus{left:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 左侧导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);
  background:var(--bg-800);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:18px;
  padding:26px 18px 22px;
  overflow-y:auto;
  z-index:80;
  transition:transform .3s ease;
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(146,170,255,.18);border-radius:999px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text-100)}
.brand:hover{color:var(--text-100)}
.brand__mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:13px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,var(--primary),var(--primary-dark));
  color:#04211C;font-weight:700;font-size:19px;
  box-shadow:var(--glow);
}
.brand__name{display:block;font-size:16px;font-weight:700;letter-spacing:.02em;line-height:1.3}
.brand__sub{display:block;font-size:10px;letter-spacing:.22em;color:var(--text-500);margin-top:3px}
.nav{display:flex;flex-direction:column;gap:6px}
.nav__item{
  position:relative;display:flex;align-items:center;gap:11px;
  height:44px;padding:0 12px;border-radius:12px;
  font-size:15px;color:var(--text-300);
  border:1px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease;
}
.nav__item:hover{background:var(--surface);color:var(--text-100)}
.nav__item.is-active{
  background:linear-gradient(90deg,rgba(53,224,192,.14),rgba(53,224,192,.02));
  color:var(--primary);
  border-color:rgba(53,224,192,.22);
}
.nav__item.is-active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;border-radius:999px;background:var(--primary);
}
.nav__icon{width:18px;height:18px;flex:0 0 18px;opacity:.9}
.nav__label{
  margin:6px 0 0;padding-left:12px;
  font-size:11px;letter-spacing:.2em;color:var(--text-500);text-transform:uppercase;
}
.side-card{
  margin-top:auto;
  background:var(--surface);
  border:1px solid var(--line-2);
  border-radius:var(--radius-card);
  padding:18px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  font-size:13px;color:var(--text-300);line-height:1.75;
}
.side-card strong{display:block;color:var(--text-100);font-size:14px;margin-bottom:8px}
.side-card p{margin-bottom:4px;word-break:break-all}
.side-card__reg{
  margin-top:12px;padding-top:12px;border-top:1px solid var(--line);
  font-size:12px;color:var(--text-500);
}

/* ============ 顶部栏（移动端） ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:90;
  align-items:center;gap:12px;padding:0 16px;
  background:rgba(11,19,34,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.topbar__toggle{
  width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line-2);background:var(--surface-2);
  display:grid;place-items:center;gap:4px;color:var(--text-100);
}
.topbar__toggle span{display:block;width:16px;height:1.6px;background:currentColor;border-radius:2px}
.topbar__brand{display:flex;align-items:center;gap:9px;margin-right:auto;color:var(--text-100);font-weight:700;font-size:15px}
.topbar__brand .brand__mark{width:30px;height:30px;flex:0 0 30px;border-radius:10px;font-size:15px;box-shadow:none}
.topbar__cta{
  height:36px;padding:0 14px;border-radius:var(--radius-btn);
  display:inline-flex;align-items:center;font-size:13px;
  color:#04211C;background:linear-gradient(140deg,var(--primary),var(--primary-dark));
}
.scrim{
  display:none;position:fixed;inset:0;z-index:70;
  background:rgba(4,8,16,.72);
  backdrop-filter:blur(4px);
  -webkit-backdrop-filter:blur(4px);
}
body.nav-open .scrim{display:block}

/* ============ 主区域 ============ */
.main{margin-left:var(--side);min-height:100vh;display:flex;flex-direction:column}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.section__head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(53,224,192,.26);
  background:rgba(53,224,192,.08);
  color:var(--primary);font-size:12.5px;letter-spacing:.12em;
  margin-bottom:18px;
}
.eyebrow--accent{color:var(--accent);border-color:rgba(255,122,92,.3);background:rgba(255,122,92,.09)}
.section__title{font-size:clamp(24px,2.6vw,36px);line-height:1.25;margin-bottom:14px}
.section__desc{color:var(--text-300);font-size:15.5px;max-width:68ch}

/* 面包屑 */
.crumb{
  padding:26px 0 0;font-size:14px;color:var(--text-500);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.crumb a{color:var(--text-300)}
.crumb a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.crumb__sep{color:var(--primary);opacity:.7}
.crumb__now{color:var(--text-100)}

/* 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;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn--primary{
  color:#04211C;
  background:linear-gradient(140deg,var(--primary),var(--primary-dark));
  box-shadow:var(--glow);
}
.btn--primary:hover{transform:translateY(-1px);filter:brightness(1.06);color:#04211C;box-shadow:0 0 0 1px rgba(53,224,192,.45),0 16px 38px -12px rgba(53,224,192,.5)}
.btn--primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(53,224,192,.22)}
.btn--ghost{
  color:var(--text-100);
  background:var(--surface-2);
  border-color:var(--line-2);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.btn--ghost:hover{transform:translateY(-1px);border-color:rgba(53,224,192,.45);color:var(--primary)}
.btn--ghost:active{transform:translateY(1px)}
.btn--text{
  height:auto;padding:0;color:var(--primary);font-weight:600;
}
.btn--text::after{content:"→";transition:transform .22s ease;margin-left:2px}
.btn--text:hover::after{transform:translateX(4px)}
.btn--block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none}

/* 标签 / 徽章 */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;
  color:var(--text-300);background:var(--surface-2);border:1px solid var(--line);
}
.tag--warm{color:var(--accent);border-color:rgba(255,122,92,.3);background:rgba(255,122,92,.1)}
.tag--mint{color:var(--primary);border-color:rgba(53,224,192,.28);background:rgba(53,224,192,.08)}

/* Hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center right;
  opacity:.34;
}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,12,22,.96) 8%,rgba(7,12,22,.78) 48%,rgba(7,12,22,.42) 100%);
}
.hero__inner{position:relative;padding:86px 0 0}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:end}
.hero h1{font-size:clamp(30px,4.4vw,54px);line-height:1.16;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero__lead{font-size:16.5px;color:var(--text-300);max-width:56ch;margin-bottom:30px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero__panel{
  background:var(--surface);
  border:1px solid var(--line-2);
  border-radius:var(--radius-card);
  padding:26px;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
}
.hero__panel h3{font-size:17px;margin-bottom:14px}
.hero__panel .ticks{margin-bottom:20px}
.hero__panel .note{font-size:13px;color:var(--text-500);line-height:1.7}
.databar{
  position:relative;
  margin-top:14px;
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  border-top:1px solid var(--line);
}
.databar__item{padding:24px 20px;border-right:1px solid var(--line)}
.databar__item:last-child{border-right:none}
.databar__value{
  font-family:"Space Grotesk",Inter,var(--font);
  font-variant-numeric:tabular-nums;
  font-size:clamp(24px,3vw,38px);font-weight:700;color:var(--primary);line-height:1.2;
}
.databar__label{font-size:13px;color:var(--text-500);margin-top:6px}

/* 通用卡片 */
.card{
  background:var(--bg-700);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-card);
  transition:border-color .22s ease,transform .22s ease;
}
.card:hover{border-color:rgba(53,224,192,.32);transform:translateY(-2px)}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--text-300);font-size:14.5px}
.card__meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-500);
}
.glass{
  background:var(--surface);
  border:1px solid var(--line-2);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}

/* 简介图文 */
.intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.intro__media{
  border-radius:var(--radius-card);overflow:hidden;position:relative;
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card);
  background:var(--bg-700);
}
.intro__media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .5s ease}
.intro__media:hover img{transform:scale(1.03)}
.intro__media figcaption{
  position:absolute;left:16px;bottom:16px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;
  background:rgba(7,12,22,.78);border:1px solid var(--line-2);color:var(--text-300);
  backdrop-filter:blur(8px);
}
.intro__body h2{font-size:clamp(23px,2.4vw,32px);line-height:1.28;margin-bottom:16px}
.intro__body p{color:var(--text-300);font-size:15.5px;margin-bottom:16px}
.ticks{display:flex;flex-direction:column;gap:10px}
.ticks li{position:relative;padding-left:26px;color:var(--text-300);font-size:14.5px;line-height:1.75}
.ticks li::before{
  content:"";position:absolute;left:6px;top:10px;
  width:7px;height:7px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 0 4px rgba(53,224,192,.14);
}
.ticks--warm li::before{background:var(--accent);box-shadow:0 0 0 4px rgba(255,122,92,.14)}

/* 编号阶梯 */
.ladder{position:relative;margin-top:8px}
.ladder::before{
  content:"";position:absolute;left:27px;top:14px;bottom:14px;width:1px;
  background:linear-gradient(180deg,rgba(53,224,192,.55),rgba(146,170,255,.16) 60%,rgba(255,122,92,.32));
}
.ladder__item{
  position:relative;display:grid;grid-template-columns:56px minmax(0,1fr);
  gap:26px;padding-bottom:26px;
}
.ladder__item:last-child{padding-bottom:0}
.ladder__num{
  width:56px;height:56px;border-radius:999px;
  display:grid;place-items:center;
  font-family:"Space Grotesk",Inter,var(--font);
  font-variant-numeric:tabular-nums;
  font-size:18px;font-weight:700;color:var(--accent);
  background:var(--bg-800);
  border:1px solid rgba(255,122,92,.36);
  box-shadow:0 0 0 6px rgba(7,12,22,.9),0 12px 30px -18px rgba(255,122,92,.7);
  z-index:1;
}
.ladder__item--mint .ladder__num{color:var(--primary);border-color:rgba(53,224,192,.42);box-shadow:0 0 0 6px rgba(7,12,22,.9),0 12px 30px -18px rgba(53,224,192,.7)}
.ladder__card{
  background:var(--bg-700);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 26px;
  box-shadow:var(--shadow-card);
  transition:border-color .22s ease,transform .22s ease;
}
.ladder__card:hover{border-color:rgba(53,224,192,.3);transform:translateY(-2px)}
.ladder__card h3{font-size:19px;margin-bottom:10px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.ladder__card p{color:var(--text-300);font-size:14.5px;margin-bottom:14px}
.ladder__card p:last-child{margin-bottom:0}

/* 场景网格 */
.scene-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.scene-grid .card{grid-column:span 2}
.scene-grid .card--wide{grid-column:span 3}
.scene__no{
  font-family:"Space Grotesk",Inter,var(--font);
  font-variant-numeric:tabular-nums;
  font-size:13px;color:var(--primary);letter-spacing:.16em;margin-bottom:12px;display:block;
}
.scene__icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:var(--surface);border:1px solid var(--line-2);color:var(--primary);margin-bottom:16px;
}
.scene__icon svg{width:20px;height:20px}

/* 对照 */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.compare__col{
  border-radius:var(--radius-card);padding:28px;
  background:var(--bg-700);border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.compare__col--hi{border-color:rgba(53,224,192,.34);background:linear-gradient(180deg,rgba(53,224,192,.09),rgba(16,27,46,1) 55%)}
.compare__col h3{font-size:19px;margin-bottom:6px}
.compare__col .sub{color:var(--text-500);font-size:13px;margin-bottom:18px}
.compare__row{
  display:flex;justify-content:space-between;gap:16px;
  padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:14.5px;color:var(--text-300);
}
.compare__row:last-child{border-bottom:none}
.compare__row b{color:var(--text-100);font-weight:600}

/* FAQ */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq details{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--bg-700);
  padding:0 22px;
  transition:border-color .22s ease,background .22s ease;
  box-shadow:var(--shadow-card);
}
.faq details:hover{border-color:rgba(146,170,255,.26)}
.faq details[open]{border-color:rgba(53,224,192,.34);background:linear-gradient(90deg,rgba(53,224,192,.06),var(--bg-700) 45%)}
.faq summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:center;gap:14px;
  padding:20px 34px 20px 14px;
  font-size:16px;font-weight:600;color:var(--text-100);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);
  font-size:22px;line-height:1;color:var(--primary);transition:transform .24s ease;
}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq details[open] summary::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:999px;background:var(--primary);
}
.faq__answer{padding:0 14px 22px;color:var(--text-300);font-size:14.8px;line-height:1.85}

/* CTA */
.cta{
  position:relative;overflow:hidden;
  border-radius:26px;
  border:1px solid var(--line-2);
  padding:52px;
  background:linear-gradient(120deg,rgba(16,27,46,.96),rgba(11,19,34,.9));
  box-shadow:var(--shadow-card);
}
.cta__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.16;
}
.cta__inner{position:relative;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:40px;align-items:center}
.cta h2{font-size:clamp(23px,2.5vw,32px);margin-bottom:14px}
.cta p{color:var(--text-300);font-size:15.5px;max-width:52ch}
.cta__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.cta__side{
  background:var(--surface);border:1px solid var(--line-2);border-radius:var(--radius-card);
  padding:26px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.cta__side .row{display:flex;flex-direction:column;gap:4px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
.cta__side .row:last-child{border-bottom:none}
.cta__side .row span{color:var(--text-500);font-size:12.5px}

/* 页脚 */
.footer{
  margin-top:auto;
  border-top:1px solid var(--line);
  background:rgba(11,19,34,.72);
  padding:64px 0 28px;
}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer__brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer__brand .brand__name{font-size:16px;font-weight:700;color:var(--text-100)}
.footer__desc{color:var(--text-300);font-size:14px;line-height:1.8;max-width:38ch}
.footer h4{font-size:14px;margin-bottom:16px;color:var(--text-100);letter-spacing:.04em}
.footer ul{display:flex;flex-direction:column;gap:10px}
.footer ul a{font-size:14px;color:var(--text-300)}
.footer ul a:hover{color:var(--primary)}
.footer__contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-300);word-break:break-all}
.footer__bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-500);
}

/* 响应式 */
@media (max-width:1439px){
  .container{max-width:1140px}
}
@media (max-width:1023px){
  .topbar{display:flex}
  .sidebar{
    transform:translateX(-100%);
    width:min(84vw,320px);
    padding-top:22px;
    box-shadow:0 0 60px rgba(0,0,0,.6);
  }
  body.nav-open .sidebar{transform:translateX(0)}
  .main{margin-left:0;padding-top:60px}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .hero__inner{padding:48px 0 0}
  .hero__grid{grid-template-columns:1fr;gap:32px;align-items:start}
  .databar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .databar__item{border-bottom:1px solid var(--line)}
  .databar__item:nth-child(2n){border-right:none}
  .intro{grid-template-columns:1fr;gap:32px}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-grid .card,.scene-grid .card--wide{grid-column:span 1}
  .compare{grid-template-columns:1fr}
  .cta{padding:36px 26px}
  .cta__inner{grid-template-columns:1fr;gap:28px}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
}
@media (max-width:639px){
  .container{padding:0 18px}
  .hero h1{font-size:30px}
  .hero__actions .btn{width:100%}
  .databar{grid-template-columns:1fr}
  .databar__item{border-right:none}
  .ladder::before{left:19px}
  .ladder__item{grid-template-columns:40px minmax(0,1fr);gap:16px}
  .ladder__num{width:40px;height:40px;font-size:14px;border-radius:12px}
  .ladder__card{padding:20px}
  .scene-grid{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;gap:8px}
  .cta{padding:28px 20px;border-radius:20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --bg-900:#070C16;
  --bg-800:#0B1322;
  --bg-700:#101B2E;
  --surface:rgba(146,170,255,.06);
  --surface-2:rgba(255,255,255,.04);
  --line:rgba(146,170,255,.14);
  --line-soft:rgba(255,255,255,.08);
  --primary:#35E0C0;
  --primary-deep:#12A98F;
  --accent:#FF7A5C;
  --text-100:#EAF0FF;
  --text-300:#A9B6D3;
  --text-500:#6C7A99;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75), inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 0 1px rgba(53,224,192,.35), 0 12px 34px -12px rgba(53,224,192,.45);
  --sidebar-w:236px;
  --container:1200px;
  --font:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","Space Grotesk","HarmonyOS Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.drawer-open{overflow:hidden}
img{max-width:100%;height:auto;display:block;background:var(--bg-700)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--text-300);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(53,224,192,.28)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-900)}
::-webkit-scrollbar-thumb{background:rgba(146,170,255,.18);border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:rgba(146,170,255,.3)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media(min-width:1440px){:root{--container:1280px}}

/* ---------------- 左侧导航 ---------------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  display:flex;
  flex-direction:column;
  padding:26px 18px 22px;
  background:var(--bg-800);
  border-right:1px solid var(--line-soft);
  overflow-y:auto;
  z-index:80;
}
.brand{display:flex;align-items:center;gap:12px;padding:4px 8px 18px;margin-bottom:16px;border-bottom:1px solid var(--line-soft);color:var(--text-100)}
.brand:hover{color:var(--text-100);text-decoration:none}
.brand__mark{
  width:38px;height:38px;flex:0 0 38px;
  display:grid;place-items:center;
  border-radius:12px;
  font-size:17px;font-weight:700;
  color:#04120F;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--glow);
}
.brand__name{display:block;font-size:16px;font-weight:700;line-height:1.35;letter-spacing:.02em}
.brand__sub{display:block;font-size:11px;letter-spacing:.16em;line-height:1.6;color:var(--text-500)}

.nav{display:flex;flex-direction:column;gap:4px}
.nav__item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;
  border-radius:var(--radius-btn);
  font-size:15px;color:var(--text-300);
}
.nav__item:hover{background:var(--surface);color:var(--text-100);text-decoration:none}
.nav__item.is-active{color:var(--primary);background:var(--surface)}
.nav__item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
  box-shadow:0 0 12px rgba(53,224,192,.6);
}
.nav__icon{width:18px;height:18px;flex:0 0 18px}
.nav__label{
  margin:24px 0 10px;padding-left:12px;
  font-size:11px;letter-spacing:.16em;color:var(--text-500);
}
.side-card{
  margin-top:auto;
  padding:16px;
  font-size:13px;color:var(--text-300);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.side-card strong{display:block;margin-bottom:8px;font-size:14px;color:var(--text-100)}
.side-card p{margin:0 0 4px}
.side-card__reg{margin-top:10px;padding-top:10px;border-top:1px solid var(--line-soft);font-size:12px;line-height:1.7;color:var(--text-500)}

/* ---------------- 移动端顶栏与抽屉 ---------------- */
.topbar{display:none}
.drawer-mask{display:none}

@media (max-width:1023px){
  .sidebar{
    width:84vw;max-width:320px;
    transform:translateX(-100%);
    transition:transform .28s ease;
    box-shadow:0 0 60px rgba(0,0,0,.65);
  }
  .sidebar.is-open{transform:translateX(0)}
  .topbar{
    display:flex;align-items:center;gap:12px;
    position:sticky;top:0;z-index:70;
    height:60px;padding:0 16px;
    background:rgba(11,19,34,.92);
    border-bottom:1px solid var(--line-soft);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
  }
  .burger{
    width:40px;height:40px;flex:0 0 40px;
    display:grid;place-content:center;gap:4px;
    background:var(--surface-2);
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    cursor:pointer;
  }
  .burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-100);transition:transform .2s ease}
  .topbar__brand{display:flex;align-items:center;gap:10px;margin-right:auto;color:var(--text-100)}
  .topbar__brand:hover{color:var(--text-100);text-decoration:none}
  .topbar__brand .brand__mark{width:32px;height:32px;flex:0 0 32px;font-size:15px;border-radius:10px}
  .topbar__brand .brand__name{font-size:15px}
  .drawer-mask{
    display:block;position:fixed;inset:0;z-index:75;
    background:rgba(4,8,16,.72);
    backdrop-filter:blur(4px);
    -webkit-backdrop-filter:blur(4px);
    opacity:0;pointer-events:none;
    transition:opacity .26s ease;
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto}
}

/* ---------------- 主内容区 ---------------- */
.main{margin-left:var(--sidebar-w);min-height:100vh;overflow-x:hidden}
@media (max-width:1023px){ .main{margin-left:0} }

/* ---------------- Hero ---------------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.hero__bg{
  position:absolute;inset:0;
  background-image:
    linear-gradient(105deg,rgba(7,12,22,.97) 0%,rgba(7,12,22,.88) 44%,rgba(16,27,46,.66) 100%),
    url(/assets/images/backpic/back-2.webp);
  background-size:cover;
  background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(620px 340px at 86% 10%,rgba(53,224,192,.16),transparent 70%);
}
.hero__inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.12fr .88fr;
  gap:56px;align-items:center;
  padding:88px 24px 72px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:22px;font-size:14px;color:var(--text-500)}
.breadcrumb a{color:var(--text-300)}
.breadcrumb .sep{color:var(--primary)}
.hero h1{font-size:clamp(30px,4.4vw,54px);line-height:1.16;font-weight:700;margin-bottom:18px}
.hero__lead{font-size:clamp(17px,1.4vw,19px);color:var(--text-100);margin-bottom:14px;max-width:34ch}
.hero__text{color:var(--text-300);max-width:62ch;font-size:15px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero__media{
  position:relative;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.hero__media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero__float{
  position:absolute;left:18px;right:18px;bottom:18px;
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;
  font-size:13px;color:var(--text-100);
  background:rgba(11,19,34,.72);
  border:1px solid var(--line);
  border-radius:14px;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.hero__float .dot{
  width:8px;height:8px;flex:0 0 8px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 4px rgba(53,224,192,.18);
}

.statbar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  margin-top:40px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.statbar__item{padding:18px 20px;background:rgba(11,19,34,.72)}
.statbar__num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;line-height:1.2;color:var(--primary);
}
.statbar__label{margin-top:2px;font-size:13px;color:var(--text-300)}

/* ---------------- 通用板块 ---------------- */
.section{position:relative;padding:96px 0}
.section--alt{background:var(--bg-800);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section__head{max-width:780px;margin-bottom:44px}
.section__head h2{font-size:clamp(24px,2.6vw,36px);margin-bottom:14px}
.section__lead{color:var(--text-300);max-width:68ch}
.eyebrow{display:inline-block;margin-bottom:12px;font-size:12px;letter-spacing:.18em;color:var(--primary)}

.grid{display:grid;gap:20px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}

.card{
  display:flex;flex-direction:column;gap:12px;
  padding:26px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:border-color .2s ease,transform .2s ease;
}
.card:hover{border-color:rgba(53,224,192,.3);transform:translateY(-2px)}
.card h3{font-size:19px}
.card p{font-size:14.5px;color:var(--text-300);max-width:52ch}
.card__icon{
  width:42px;height:42px;display:grid;place-items:center;
  border-radius:12px;color:var(--primary);
  background:rgba(53,224,192,.1);
  border:1px solid rgba(53,224,192,.24);
}
.card__icon svg{width:20px;height:20px}
.card__link{
  margin-top:auto;padding-top:8px;
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.card__link:hover{text-decoration:none;gap:10px}
.card__link::after{content:"→";transition:transform .2s ease}

/* ---------------- 按钮 / 标签 ---------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn--primary{color:#03130F;background:linear-gradient(135deg,var(--primary),var(--primary-deep));box-shadow:var(--glow)}
.btn--primary:hover{color:#03130F;text-decoration:none;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(53,224,192,.5),0 18px 40px -14px rgba(53,224,192,.55)}
.btn--primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(53,224,192,.3)}
.btn--primary:disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}
.btn--ghost{color:var(--text-100);background:var(--surface);border-color:var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.btn--ghost:hover{color:var(--primary);text-decoration:none;border-color:rgba(53,224,192,.5);transform:translateY(-1px)}
.btn--sm{height:38px;padding:0 16px;font-size:14px}

.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12px;letter-spacing:.04em;
  color:var(--primary);
  background:rgba(53,224,192,.1);
  border:1px solid rgba(53,224,192,.28);
}
.pill--accent{color:var(--accent);background:rgba(255,122,92,.12);border-color:rgba(255,122,92,.3)}
.pill--muted{color:var(--text-300);background:var(--surface-2);border-color:var(--line)}

/* ---------------- 规格速览 ---------------- */
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.spec-card{
  display:flex;flex-direction:column;gap:12px;
  padding:22px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:border-color .2s ease,transform .2s ease;
}
.spec-card:hover{border-color:rgba(53,224,192,.3);transform:translateY(-2px)}
.spec-card__top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.spec-card h3{font-size:17px}
.spec-card__desc{font-size:13.5px;color:var(--text-500);line-height:1.75}
.spec-rows{display:flex;flex-direction:column}
.spec-row{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;padding:9px 0;border-top:1px dashed var(--line-soft);font-size:13.5px}
.spec-row dt{color:var(--text-500);flex:0 0 auto}
.spec-row dd{margin:0;color:var(--text-100);text-align:right;font-variant-numeric:tabular-nums}
.spec-row dd.hl{color:var(--primary)}

/* ---------------- 两栏对照 ---------------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare__col{
  padding:28px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
.compare__col--accent{
  border-color:rgba(255,122,92,.28);
  background:linear-gradient(180deg,rgba(255,122,92,.07),rgba(255,255,255,.03));
}
.compare__title{display:flex;align-items:center;gap:10px;font-size:18px;margin-bottom:6px}
.compare__hint{margin-bottom:18px;font-size:13px;color:var(--text-500)}
.check-list li{position:relative;margin-bottom:12px;padding-left:26px;font-size:14.5px;color:var(--text-300)}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:12px;height:12px;border-radius:4px;
  background:rgba(53,224,192,.16);
  border:1px solid rgba(53,224,192,.5);
}
.check-list--accent li::before{background:rgba(255,122,92,.16);border-color:rgba(255,122,92,.55)}

/* ---------------- 流程紧凑条 ---------------- */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.flow__step{padding:24px;border-right:1px solid var(--line-soft)}
.flow__step:last-child{border-right:0}
.flow__num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:26px;font-weight:700;line-height:1.2;color:var(--accent);
  margin-bottom:8px;
}
.flow__step h3{font-size:16px;margin-bottom:8px}
.flow__step p{font-size:13.5px;color:var(--text-300)}

/* ---------------- FAQ ---------------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq__item{
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:border-color .2s ease,background-color .2s ease;
}
.faq__item[open]{
  border-color:rgba(53,224,192,.32);
  border-left:3px solid var(--primary);
  background:linear-gradient(180deg,rgba(53,224,192,.05),rgba(255,255,255,.03));
}
.faq__q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;
  font-size:16px;font-weight:600;color:var(--text-100);
  cursor:pointer;list-style:none;
}
.faq__q::-webkit-details-marker{display:none}
.faq__q:hover{color:var(--primary)}
.faq__q::after{
  content:"+";flex:0 0 auto;
  font-size:20px;line-height:1;color:var(--primary);
  transition:transform .22s ease;
}
.faq__item[open] .faq__q::after{transform:rotate(45deg)}
.faq__a{padding:0 24px 22px;font-size:14.5px;color:var(--text-300);max-width:72ch}

/* ---------------- CTA 与表单 ---------------- */
.cta{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:start}
.form{
  padding:28px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
.form__title{font-size:18px;margin-bottom:6px}
.form__sub{margin-bottom:20px;font-size:13.5px;color:var(--text-500)}
.field{margin-bottom:18px}
.field label{display:block;margin-bottom:8px;font-size:13.5px;color:var(--text-300)}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--radius-input);
  color:var(--text-100);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-300) 50%),linear-gradient(135deg,var(--text-300) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:40px}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:rgba(53,224,192,.65);
  box-shadow:0 0 0 3px rgba(53,224,192,.16);
  background-color:rgba(255,255,255,.06);
}
.form__foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:4px}
.form__note{font-size:12.5px;color:var(--text-500);max-width:34ch}
.form__msg{display:none;margin-top:14px;font-size:14px;color:var(--primary)}
.form__msg.is-on{display:block}

.info-panel{display:flex;flex-direction:column;gap:18px}
.info-card{
  padding:24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
}
.info-card h3{font-size:16px;margin-bottom:12px}
.info-list{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-300)}
.info-list span strong{color:var(--text-100);font-weight:600}
.info-card img{border-radius:14px;aspect-ratio:16/9;object-fit:cover;width:100%}

/* ---------------- 页脚 ---------------- */
.footer{
  padding:64px 0 28px;
  background:var(--bg-800);
  border-top:1px solid var(--line-soft);
}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer h4{font-size:14px;letter-spacing:.06em;margin-bottom:16px;color:var(--text-100)}
.footer ul li{margin-bottom:10px;font-size:14px}
.footer__brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;color:var(--text-100)}
.footer__desc{font-size:14px;color:var(--text-300);max-width:36ch}
.footer__contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-300)}
.footer__bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--text-500);
}

/* ---------------- 响应式 ---------------- */
@media (max-width:1199px){
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .spec-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .hero__inner{grid-template-columns:1fr;gap:40px;padding:64px 24px 56px}
  .hero__text{max-width:100%}
  .compare,.cta{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow__step:nth-child(2){border-right:0}
  .flow__step:nth-child(1),.flow__step:nth-child(2){border-bottom:1px solid var(--line-soft)}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .statbar{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .grid--2,.grid--3,.spec-grid,.flow,.footer__grid{grid-template-columns:1fr}
  .flow__step{border-right:0;border-bottom:1px solid var(--line-soft)}
  .flow__step:last-child{border-bottom:0}
  .hero__inner{padding:56px 18px 44px}
  .hero__actions .btn{width:100%}
  .footer__bottom{flex-direction:column;gap:6px}
  .statbar__item{padding:16px}
}