/* roulang page: index */
:root{
  --ink-900:#050A14;
  --ink-800:#0A1220;
  --ink-700:#101B2E;
  --ink-600:#17263D;
  --brand-500:#2CD4E8;
  --brand-600:#12A7C4;
  --brand-300:#8BEEF8;
  --accent-500:#FF7A45;
  --accent-600:#E85F2A;
  --violet-500:#6E5BFF;
  --tx-1:#EAF2FF;
  --tx-2:#A9B8CE;
  --tx-3:#6B7A90;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(44,212,232,.38);
  --glass:rgba(255,255,255,.05);
  --glow-brand:0 0 0 1px rgba(44,212,232,.35),0 10px 34px -10px rgba(44,212,232,.55);
  --glow-accent:0 0 0 1px rgba(255,122,69,.35),0 12px 36px -10px rgba(255,122,69,.60);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--tx-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:0;color:var(--tx-1)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:8px}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 28px}}
@media(min-width:1024px){.container{padding:0 32px}}

.section{padding:56px 0}
@media(min-width:768px){.section{padding:88px 0}}
@media(min-width:1024px){.section{padding:112px 0}}

/* ===== App Shell ===== */
.app-sidebar{
  position:fixed;left:0;top:0;bottom:0;width:240px;
  background:var(--ink-800);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  z-index:40;
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
}
.brand{display:flex;align-items:center;gap:10px;padding:22px 18px;border-bottom:1px solid var(--line)}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(44,212,232,.22),rgba(110,91,255,.16));
  border:1px solid rgba(44,212,232,.45);
  box-shadow:0 0 18px -4px rgba(44,212,232,.65);
  color:var(--brand-300);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-size:15px;font-weight:600;line-height:1.35;color:var(--tx-1)}
.brand-text small{display:block;font-size:11px;font-weight:400;color:var(--tx-3);line-height:1.5;letter-spacing:.4px}
.side-scroll{flex:1;overflow-y:auto;padding:18px 14px}
.side-label{font-size:11px;color:var(--tx-3);padding:0 10px 10px;letter-spacing:1px}
.side-nav{display:flex;flex-direction:column;gap:6px}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px 0 14px;border-radius:12px;
  color:var(--tx-2);font-size:15px;
  transition:background .18s,color .18s;
}
.side-link svg{width:18px;height:18px;flex:0 0 18px;color:var(--tx-3);transition:color .18s}
.side-link:hover{background:rgba(255,255,255,.05);color:var(--tx-1)}
.side-link.is-active{background:var(--glass);color:var(--tx-1);border:1px solid var(--line)}
.side-link.is-active svg{color:var(--brand-500)}
.side-link.is-active::before{
  content:"";position:absolute;left:-1px;top:10px;bottom:10px;width:3px;border-radius:3px;
  background:var(--accent-500);box-shadow:0 0 12px rgba(255,122,69,.75);
}
.side-foot{padding:16px 14px 20px;border-top:1px solid var(--line)}
.side-foot p{font-size:12px;color:var(--tx-3);line-height:1.7;margin-bottom:10px}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:42px;border-radius:12px;font-size:14px;font-weight:600;
  background:linear-gradient(135deg,var(--accent-500),var(--accent-600));
  color:#200E04;box-shadow:var(--glow-accent);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s;
}
.side-cta:hover{transform:translateY(-2px)}
.side-cta:active{transform:translateY(0)}

.main{margin-left:240px;min-width:0;flex:1}
.topbar{display:none}

@media(max-width:1023px){
  .app-sidebar{transform:translateX(-100%);width:280px;box-shadow:0 0 60px rgba(0,0,0,.7)}
  .app-sidebar.is-open{transform:translateX(0)}
  .main{margin-left:0;padding-top:56px;padding-bottom:86px}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:56px;padding:0 16px;
    background:rgba(10,18,32,.86);backdrop-filter:blur(14px) saturate(1.2);
    -webkit-backdrop-filter:blur(14px) saturate(1.2);
    border-bottom:1px solid var(--line);z-index:40;
  }
  .topbar .brand-text{font-size:14px}
  .topbar .brand-text small{display:none}
  .topbar .brand{padding:0;border:0;gap:8px}
  .topbar .brand-mark{width:32px;height:32px;flex:0 0 32px}
  .hamburger{
    width:44px;height:44px;display:flex;align-items:center;justify-content:center;
    border-radius:12px;border:1px solid var(--line);background:var(--glass);color:var(--tx-1);
  }
  .hamburger svg{width:20px;height:20px}
  .side-link{height:48px;font-size:16px}
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,8,16,.62);z-index:50;
  opacity:0;visibility:hidden;transition:opacity .24s;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer-close{
  position:absolute;top:14px;right:14px;width:38px;height:38px;border-radius:10px;
  display:none;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--glass);color:var(--tx-2);
}
@media(max-width:1023px){.drawer-close{display:flex}}

/* ===== Hero ===== */
.hero{position:relative;padding:44px 0 56px;overflow:hidden}
@media(min-width:768px){.hero{padding:64px 0 80px}}
@media(min-width:1024px){.hero{min-height:80vh;display:flex;align-items:center;padding:80px 0}}
.hero::after{
  content:"";position:absolute;left:-10%;top:-20%;width:60%;height:70%;
  background:radial-gradient(circle,rgba(44,212,232,.16),transparent 62%);
  pointer-events:none;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;
  font-size:12.5px;color:var(--brand-300);
  background:rgba(44,212,232,.10);border:1px solid rgba(44,212,232,.30);
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--brand-500);box-shadow:0 0 10px var(--brand-500)}
h1.hero-title{
  font-size:clamp(30px,5vw,48px);font-weight:700;line-height:1.22;
  margin:18px 0 16px;max-width:15em;
}
.hero-sub{font-size:17px;line-height:1.9;color:var(--tx-2);max-width:32em;margin-bottom:28px}
@media(min-width:1024px){.hero-sub{font-size:18px}}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 22px}
.trust-row li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--tx-2)}
.trust-row svg{width:16px;height:16px;color:var(--brand-500)}

.hero-visual{position:relative;border-radius:22px}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:22px;
  border:1px solid rgba(44,212,232,.32);
  box-shadow:0 30px 70px -30px rgba(44,212,232,.45),0 18px 40px -24px rgba(0,0,0,.9);
}
@media(min-width:1024px){.hero-visual img{aspect-ratio:5/4}}
.hero-info{
  position:absolute;left:14px;right:14px;bottom:14px;
  padding:16px 18px;border-radius:18px;
  background:rgba(10,18,32,.72);
  backdrop-filter:blur(14px) saturate(1.2);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  border:1px solid var(--line);
}
@media(min-width:640px){.hero-info{left:auto;right:18px;bottom:18px;width:min(320px,80%)}}
.hero-info-row{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--tx-2)}
.hero-info-row+.hero-info-row{margin-top:10px;padding-top:10px;border-top:1px solid var(--line)}
.hero-info-row b{font-size:15px;color:var(--tx-1);font-weight:600}
.hero-info-row span.num{font-family:"Inter",system-ui,sans-serif;font-size:17px;font-weight:700;color:var(--accent-500)}

/* ===== 通用板块头 ===== */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
@media(min-width:768px){.sec-head{margin-bottom:32px}}
.sec-head h2{font-size:clamp(24px,3.4vw,34px);font-weight:700;line-height:1.3}
.sec-head .sec-desc{margin-top:10px;font-size:15px;color:var(--tx-2);max-width:44em}
.eyebrow{font-size:12.5px;letter-spacing:1.6px;color:var(--brand-500);margin-bottom:10px;display:block}

.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-500);font-size:14.5px;font-weight:600;white-space:nowrap}
.link-arrow svg{width:16px;height:16px;transition:transform .18s}
.link-arrow:hover svg{transform:translateX(3px)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:12px;
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),background .18s,box-shadow .18s,border-color .18s,color .18s;
  white-space:nowrap;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:linear-gradient(135deg,var(--accent-500),var(--accent-600));color:#210F05;box-shadow:var(--glow-accent)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,122,69,.5),0 18px 44px -10px rgba(255,122,69,.8)}
.btn-primary:active{transform:translateY(0);background:linear-gradient(135deg,var(--accent-600),#C94E1E)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--tx-1)}
.btn-ghost:hover{border-color:rgba(44,212,232,.6);background:rgba(44,212,232,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);background:rgba(44,212,232,.14)}
.btn-block{width:100%}

/* ===== 卡片 ===== */
.card{
  position:relative;background:var(--ink-700);border:1px solid var(--line);
  border-radius:18px;padding:22px;overflow:hidden;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),border-color .2s,box-shadow .2s;
}
@media(min-width:1024px){.card{padding:24px}}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.16),transparent 70%);
}
.card-hover:hover{transform:translateY(-4px);border-color:rgba(44,212,232,.42);box-shadow:0 22px 46px -26px rgba(44,212,232,.55)}
.card-soft{background:var(--ink-800)}
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(1.2);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  border:1px solid var(--line);border-radius:22px;
}
.num-tag{
  font-family:"Inter",system-ui,sans-serif;font-size:13px;font-weight:700;
  color:var(--accent-500);letter-spacing:1px;
}
.icon-box{
  width:44px;height:44px;border-radius:13px;flex:0 0 44px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(44,212,232,.10);border:1px solid rgba(44,212,232,.28);color:var(--brand-300);
}
.icon-box svg{width:22px;height:22px}
.icon-box.violet{background:rgba(110,91,255,.14);border-color:rgba(110,91,255,.30);color:#B7AEFF}
.badge{
  display:inline-flex;align-items:center;height:25px;padding:0 10px;border-radius:999px;
  font-size:12px;line-height:1;
  background:rgba(110,91,255,.14);border:1px solid rgba(110,91,255,.28);color:#BCB3FF;
}
.badge-teal{background:rgba(44,212,232,.12);border-color:rgba(44,212,232,.30);color:var(--brand-300)}

.card-cover{aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:var(--ink-600);margin-bottom:16px}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s cubic-bezier(.2,.7,.3,1)}
.card-hover:hover .card-cover img{transform:scale(1.03)}

.divider{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,var(--line),transparent)}

/* 卖点 */
.big-card{position:relative;border-radius:22px;overflow:hidden;border:1px solid var(--line);background:var(--ink-700)}
.big-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.big-card-body{padding:22px 24px 26px}
@media(min-width:1024px){.big-card-body{padding:26px 28px 30px}}
.stack-card{
  display:flex;gap:16px;align-items:flex-start;padding:20px 22px;
  border-radius:18px;border:1px solid var(--line);background:var(--ink-800);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),border-color .2s,background .2s;
}
.stack-card:hover{transform:translateY(-4px);border-color:rgba(44,212,232,.40);background:var(--ink-600)}
.stack-card h3{font-size:19px;font-weight:600;margin-bottom:6px}
.stack-card p{font-size:14.5px;color:var(--tx-2);line-height:1.85}

/* 场景演示 */
.scene-img{border-radius:22px;overflow:hidden;border:1px solid var(--line)}
.scene-img img{width:100%;aspect-ratio:4/3;object-fit:cover}
.scene-list{margin:18px 0 20px;display:flex;flex-direction:column;gap:10px}
.scene-list li{position:relative;padding-left:22px;font-size:15px;color:var(--tx-2)}
.scene-list li::before{
  content:"";position:absolute;left:0;top:12px;width:12px;height:2px;border-radius:2px;
  background:var(--brand-500);box-shadow:0 0 8px rgba(44,212,232,.8);
}
.scene-title{font-size:clamp(21px,2.6vw,26px);font-weight:700;line-height:1.35;margin-bottom:12px}

/* 资讯列表 */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  font-size:13.5px;color:var(--tx-2);border:1px solid var(--line);background:var(--ink-800);
  transition:color .18s,border-color .18s,background .18s,transform .18s;
}
.chip:hover{color:var(--tx-1);border-color:rgba(44,212,232,.45);transform:translateY(-2px)}
.chip.is-active{color:var(--brand-300);border-color:rgba(44,212,232,.55);background:rgba(44,212,232,.10)}

.post-card{display:flex;flex-direction:column;padding:16px;border-radius:18px;border:1px solid var(--line);background:var(--ink-800);position:relative;transition:transform .2s cubic-bezier(.2,.7,.3,1),border-color .2s,background .2s,box-shadow .2s}
.post-card:hover{transform:translateY(-4px);border-color:rgba(44,212,232,.42);background:var(--ink-600);box-shadow:0 22px 46px -26px rgba(44,212,232,.55)}
.post-card h3{
  font-size:17px;font-weight:600;line-height:1.5;margin:12px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card p{
  font-size:14px;color:var(--tx-2);line-height:1.8;margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:12.5px;color:var(--tx-3)}
.post-meta svg{width:16px;height:16px;color:var(--brand-500);transition:transform .18s}
.post-card:hover .post-meta svg{transform:translateX(3px)}
.empty-state{padding:52px 24px;text-align:center;border-radius:22px}
.empty-state svg{width:38px;height:38px;color:var(--brand-500);margin:0 auto 16px}
.empty-state h3{font-size:19px;font-weight:600;margin-bottom:8px}
.empty-state p{font-size:14.5px;color:var(--tx-2);margin-bottom:20px}

/* 社会认同 */
.stat-num{font-family:"Inter",system-ui,sans-serif;font-size:clamp(30px,4vw,42px);font-weight:700;color:var(--accent-500);line-height:1.1}
.stat-label{font-size:13.5px;color:var(--tx-2);margin-top:6px}
.quote-card{padding:24px;border-radius:20px;border:1px solid var(--line);background:var(--ink-800);position:relative}
.quote-card::before{
  content:"“";position:absolute;top:6px;right:20px;font-size:56px;line-height:1;
  color:rgba(44,212,232,.20);font-family:Georgia,serif;
}
.quote-card blockquote{margin:0 0 18px;font-size:15px;color:var(--tx-2);line-height:1.9}
.quote-user{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 40px;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;color:#210F05;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-600));
}
.avatar.v{background:linear-gradient(135deg,#8D7CFF,var(--violet-500));color:#0C0824}
.quote-user b{display:block;font-size:14px;font-weight:600}
.quote-user span{display:block;font-size:12.5px;color:var(--tx-3)}
.logo-row{display:flex;flex-wrap:wrap;gap:12px 32px;align-items:center;opacity:.6;transition:opacity .2s}
.logo-row:hover{opacity:1}
.logo-row span{font-size:14px;color:var(--tx-2);padding-left:14px;border-left:2px solid rgba(44,212,232,.35)}

/* FAQ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:14px 0;background:none;border:0;color:var(--tx-1);
  font-size:16px;font-weight:600;text-align:left;cursor:pointer;line-height:1.6;
}
.faq-q:hover{color:var(--brand-300)}
.faq-icon{width:22px;height:22px;flex:0 0 22px;color:var(--brand-500);transition:transform .2s}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a p{padding:0 36px 20px 0;font-size:15px;color:var(--tx-2);line-height:1.9}

/* CTA */
.cta-card{
  position:relative;overflow:hidden;border-radius:22px;padding:32px 24px;
  background:linear-gradient(120deg,rgba(44,212,232,.12),rgba(110,91,255,.09) 48%,rgba(255,122,69,.12));
  border:1px solid rgba(44,212,232,.30);
  box-shadow:0 0 0 1px rgba(44,212,232,.12),0 28px 60px -30px rgba(44,212,232,.55);
  backdrop-filter:blur(14px) saturate(1.2);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
}
@media(min-width:768px){.cta-card{padding:44px 40px}}
.cta-card h2{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.35;margin-bottom:10px}
.cta-card p{font-size:15px;color:var(--tx-2);max-width:40em}
.cta-actions{display:flex;flex-direction:column;gap:12px;margin-top:24px}
@media(min-width:640px){.cta-actions{flex-direction:row;flex-wrap:wrap;margin-top:0}}
@media(min-width:1024px){
  .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px}
}

/* 页脚 */
.site-footer{background:var(--ink-800);border-top:1px solid var(--line);padding:52px 0 26px}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:640px){.foot-grid{grid-template-columns:1fr 1fr;gap:34px}}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}}
.foot-title{font-size:14px;font-weight:600;color:var(--tx-1);margin-bottom:16px}
.foot-list{display:flex;flex-direction:column;gap:10px}
.foot-list a{font-size:14px;color:var(--tx-2);transition:color .18s,padding-left .18s}
.foot-list a:hover{color:var(--brand-300);padding-left:4px}
.foot-brand p{font-size:14px;color:var(--tx-2);line-height:1.9;margin:16px 0 14px;max-width:30em}
.foot-note{font-size:12.5px;color:var(--tx-3)}
.foot-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--tx-3);
}
.foot-bottom a{color:var(--tx-3)}
.foot-bottom a:hover{color:var(--brand-300)}

/* 移动底部条 */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:45;
  display:flex;align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(10,18,32,.88);
  backdrop-filter:blur(14px) saturate(1.2);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  border-top:1px solid var(--line);
}
.mobile-bar p{font-size:12.5px;color:var(--tx-2);line-height:1.5;flex:1;min-width:0}
.mobile-bar .btn{height:48px;padding:0 18px;font-size:14.5px}
@media(min-width:1024px){.mobile-bar{display:none}}

.desk-bar{
  position:fixed;left:240px;right:0;bottom:0;z-index:45;
  height:64px;display:none;align-items:center;justify-content:flex-end;gap:16px;
  padding:0 32px;
  background:rgba(10,18,32,.88);
  backdrop-filter:blur(14px) saturate(1.2);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  border-top:1px solid var(--line);
  transform:translateY(100%);opacity:0;
  transition:transform .3s cubic-bezier(.2,.7,.3,1),opacity .3s;
}
@media(min-width:1024px){.desk-bar{display:flex}}
.desk-bar.is-visible{transform:translateY(0);opacity:1}
.desk-bar p{font-size:14px;color:var(--tx-2)}

@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink-900:#050A14;
  --ink-800:#0A1220;
  --ink-700:#101B2E;
  --ink-600:#17263D;
  --brand-500:#2CD4E8;
  --brand-600:#12A7C4;
  --brand-300:#8BEEF8;
  --accent-500:#FF7A45;
  --accent-600:#E85F2A;
  --violet-500:#6E5BFF;
  --tx-1:#EAF2FF;
  --tx-2:#A9B8CE;
  --tx-3:#6B7A90;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(44,212,232,.38);
  --glass:rgba(255,255,255,.05);
  --glow-brand:0 0 0 1px rgba(44,212,232,.35),0 10px 34px -10px rgba(44,212,232,.55);
  --glow-accent:0 0 0 1px rgba(255,122,69,.35),0 12px 36px -10px rgba(255,122,69,.60);
  --r-card:18px;
  --r-lg:22px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --sidebar:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--tx-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",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;
  background:
    radial-gradient(760px 420px at 18% -6%,rgba(44,212,232,.13),transparent 62%),
    radial-gradient(680px 400px at 96% 4%,rgba(110,91,255,.12),transparent 60%),
    radial-gradient(900px 520px at 50% 108%,rgba(255,122,69,.07),transparent 66%);
  z-index:0;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}
::selection{background:rgba(44,212,232,.28)}

/* ---------- 布局骨架 ---------- */
.shell{position:relative;z-index:1}
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar);height:100vh;
  background:var(--ink-800);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  z-index:40;
}
.sidebar-top{padding:22px 18px 18px;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:12px}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:11px;
  display:grid;place-items:center;
  color:var(--brand-300);
  background:linear-gradient(150deg,rgba(44,212,232,.20),rgba(110,91,255,.14));
  border:1px solid var(--line-strong);
  box-shadow:0 0 18px -4px rgba(44,212,232,.65);
}
.brand-mark svg{width:19px;height:19px}
.brand-text{font-size:15.5px;font-weight:600;letter-spacing:0;line-height:1.3;color:var(--tx-1)}
.side-scroll{flex:1;overflow-y:auto;padding:16px 12px;scrollbar-width:thin}
.side-scroll::-webkit-scrollbar{width:6px}
.side-scroll::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:99px}
.side-group-label{
  font-size:12px;color:var(--tx-3);letter-spacing:.08em;
  padding:6px 12px 8px;text-transform:uppercase;
}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-link{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:12px;
  color:var(--tx-2);font-size:14.5px;
  transition:background .18s cubic-bezier(.2,.7,.3,1),color .18s cubic-bezier(.2,.7,.3,1);
}
.side-link svg{width:18px;height:18px;flex:0 0 18px;color:currentColor;opacity:.85}
.side-link:hover{color:var(--tx-1);background:rgba(255,255,255,.05)}
.side-link.is-active{
  color:var(--tx-1);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:0 12px 30px -22px rgba(0,0,0,.95);
}
.side-link.is-active::before{
  content:"";position:absolute;left:-12px;top:11px;bottom:11px;width:3px;
  border-radius:0 4px 4px 0;background:var(--accent-500);
  box-shadow:0 0 14px rgba(255,122,69,.7);
}
.side-link.is-active svg{color:var(--brand-500);opacity:1}
.sidebar-foot{padding:14px 16px 20px;border-top:1px solid var(--line)}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:44px;border-radius:12px;font-size:14px;font-weight:600;
  color:#1B0C04;
  background:linear-gradient(135deg,var(--accent-500),var(--accent-600));
  box-shadow:var(--glow-accent);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s;
}
.side-cta:hover{transform:translateY(-2px)}
.side-cta:active{transform:translateY(0)}
.side-cta svg{width:17px;height:17px}
.side-meta{margin-top:12px;font-size:12.5px;color:var(--tx-3);line-height:1.7}

.main{margin-left:var(--sidebar);min-height:100vh}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:40;
  align-items:center;justify-content:space-between;gap:12px;
  padding:0 14px;
  background:rgba(10,18,32,.78);
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid var(--line);
}
.topbar .brand{padding:0;gap:9px}
.topbar .brand-mark{width:30px;height:30px;flex:0 0 30px;border-radius:10px}
.topbar .brand-text{font-size:14.5px}
.burger{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--tx-1);
}
.burger:hover{border-color:var(--line-strong);color:var(--brand-300)}
.burger svg{width:20px;height:20px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,8,16,.62);z-index:50;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s;
}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;z-index:60;
  background:var(--ink-800);border-right:1px solid var(--line);
  transform:translateX(-102%);
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;
  padding:0 0 18px;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 14px 12px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--tx-1);
}
.drawer .side-link{height:48px;font-size:16px}
.drawer .side-nav{padding:14px 12px}
body.drawer-open{overflow:hidden}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}

/* ---------- 面包屑 ---------- */
.page-top{padding:96px 0 0}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--tx-3)}
.crumb a{color:var(--tx-2)}
.crumb a:hover{color:var(--brand-300)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb .now{color:var(--tx-3);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头 ---------- */
.article-head{padding:24px 0 8px;border-bottom:1px solid var(--line);margin-bottom:36px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 10px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  color:#C7C0FF;background:rgba(110,91,255,.14);
  border:1px solid rgba(110,91,255,.30);
}
.badge.is-cyan{color:var(--brand-300);background:rgba(44,212,232,.12);border-color:rgba(44,212,232,.30)}
.article-title{
  margin:18px 0 0;
  font-size:clamp(26px,3.6vw,42px);
  line-height:1.24;font-weight:700;letter-spacing:0;color:var(--tx-1);
  max-width:880px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin:18px 0 22px;font-size:13px;color:var(--tx-3)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item svg{width:16px;height:16px;color:var(--brand-500)}

/* ---------- 阅读区布局 ---------- */
.read-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:44px;align-items:start}
.article-body{
  max-width:820px;font-size:16.5px;line-height:1.92;color:var(--tx-2);
}
.article-body p{margin:0 0 1.15em}
.article-body h2{
  position:relative;
  margin:44px 0 18px;padding-left:16px;
  font-size:clamp(21px,2.4vw,27px);line-height:1.34;font-weight:700;color:var(--tx-1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:var(--brand-500);box-shadow:0 0 14px rgba(44,212,232,.8);
}
.article-body h3{
  margin:32px 0 12px;
  font-size:20px;line-height:1.4;font-weight:600;color:var(--tx-1);
}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:600;color:var(--tx-1)}
.article-body strong{color:var(--tx-1);font-weight:600}
.article-body a{color:var(--brand-300);border-bottom:1px solid rgba(44,212,232,.35)}
.article-body a:hover{color:var(--brand-500);border-bottom-color:var(--brand-500)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:4px}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:9px;height:2px;border-radius:2px;background:var(--brand-500);
}
.article-body ol{counter-reset:oly}
.article-body ol li{counter-increment:oly}
.article-body ol li::before{
  content:counter(oly);position:absolute;left:0;top:.18em;
  font-size:13px;font-weight:700;color:var(--brand-500);
}
.article-body blockquote{
  margin:26px 0;padding:18px 20px;border-left:4px solid var(--brand-500);
  background:var(--glass);border-radius:0 14px 14px 0;color:var(--tx-2);
  backdrop-filter:blur(14px) saturate(1.2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:22px 0;border:1px solid var(--line);width:100%;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--tx-3)}
.article-body hr{border:0;height:1px;background:linear-gradient(90deg,rgba(44,212,232,.45),transparent);margin:36px 0}
.article-body pre{
  margin:22px 0;padding:16px 18px;border-radius:12px;overflow-x:auto;
  background:var(--ink-800);border:1px solid var(--line);
  font-size:13.5px;line-height:1.7;color:#CFE7F5;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;padding:2px 6px;border-radius:6px;
  background:rgba(44,212,232,.10);color:var(--brand-300);
}
.article-body pre code{background:none;padding:0;color:inherit}
.table-wrap{margin:24px 0;overflow-x:auto;border:1px solid var(--line);border-radius:14px}
.article-body table{border-collapse:collapse;width:100%;min-width:520px;font-size:14.5px}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-body th{background:var(--ink-700);color:var(--tx-1);font-weight:600;white-space:nowrap}
.article-body tr:last-child td{border-bottom:0}

/* ---------- 右侧栏 ---------- */
.aside-col{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.glass-card{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(1.2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  padding:20px;
}
.aside-title{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--tx-1);margin-bottom:12px}
.aside-title svg{width:16px;height:16px;color:var(--brand-500)}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow-y:auto}
.toc-list a{
  display:block;padding:8px 10px;border-left:2px solid transparent;
  font-size:13.5px;color:var(--tx-3);border-radius:0 8px 8px 0;
  transition:color .18s,background .18s,border-color .18s;
}
.toc-list a:hover{color:var(--tx-1);background:rgba(255,255,255,.04)}
.toc-list a.is-current{color:var(--brand-300);border-left-color:var(--brand-500);background:rgba(44,212,232,.07)}
.toc-empty{font-size:13.5px;color:var(--tx-3)}
.mini-card{display:flex;gap:12px;padding:12px;border-radius:14px;background:var(--ink-800);border:1px solid var(--line);transition:transform .18s,border-color .18s}
.mini-card:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.mini-card + .mini-card{margin-top:10px}
.mini-thumb{width:74px;height:56px;flex:0 0 74px;border-radius:10px;overflow:hidden;background:var(--ink-700)}
.mini-thumb img{width:100%;height:100%;object-fit:cover}
.mini-title{font-size:14px;font-weight:600;color:var(--tx-1);line-height:1.5}
.mini-sub{font-size:12.5px;color:var(--tx-3);margin-top:4px}

/* ---------- 文末 ---------- */
.tail{margin-top:56px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;padding-top:24px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  font-size:13px;color:var(--tx-2);background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:color .18s,border-color .18s,background .18s;
}
.tag:hover{color:var(--brand-300);border-color:var(--line-strong);background:rgba(44,212,232,.08)}
.jump-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:28px}
.jump-card{
  display:flex;align-items:center;gap:14px;
  padding:18px 20px;border-radius:var(--r-card);
  background:var(--ink-800);border:1px solid var(--line);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),border-color .18s;
}
.jump-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.jump-card svg{width:20px;height:20px;color:var(--brand-500);flex:0 0 20px}
.jump-card strong{display:block;font-size:15px;color:var(--tx-1);font-weight:600}
.jump-card span{font-size:13px;color:var(--tx-3)}
.jump-card.next{justify-content:flex-end;text-align:right}

/* ---------- 相关推荐 ---------- */
.section{padding:88px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.3;color:var(--tx-1)}
.section-head p{font-size:14.5px;color:var(--tx-3);margin-top:8px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-500);white-space:nowrap}
.link-arrow svg{width:16px;height:16px;transition:transform .18s}
.link-arrow:hover svg{transform:translateX(3px)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),border-color .2s;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(44,212,232,.40)}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-700)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-body h3{font-size:17px;font-weight:600;line-height:1.55;color:var(--tx-1)}
.post-body p{font-size:14px;line-height:1.8;color:var(--tx-2)}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--tx-3)}
.post-foot svg{width:16px;height:16px;color:var(--brand-500)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1fr auto;align-items:center;gap:32px;
  padding:38px 40px;border-radius:var(--r-lg);
  background:linear-gradient(135deg,rgba(44,212,232,.10),rgba(110,91,255,.10) 50%,rgba(255,122,69,.08));
  border:1px solid var(--line-strong);
  box-shadow:0 30px 70px -40px rgba(44,212,232,.75);
  backdrop-filter:blur(14px) saturate(1.2);
}
.cta-band h2{font-size:clamp(20px,2.6vw,28px);font-weight:700;color:var(--tx-1)}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--tx-2);max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,background .18s,border-color .18s;
}
.btn svg{width:17px;height:17px}
.btn-primary{
  color:#1B0C04;border:0;
  background:linear-gradient(135deg,var(--accent-500),var(--accent-600));
  box-shadow:var(--glow-accent);
}
.btn-primary:hover{transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{color:var(--tx-1);background:transparent;border:1px solid var(--line)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--brand-500);background:rgba(44,212,232,.08)}
.btn-ghost:active{transform:translateY(0)}

/* ---------- 空态 ---------- */
.empty-state{
  padding:44px 28px;text-align:center;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  backdrop-filter:blur(14px) saturate(1.2);
}
.empty-ico{
  width:56px;height:56px;margin:0 auto 18px;border-radius:18px;display:grid;place-items:center;
  background:rgba(44,212,232,.10);border:1px solid var(--line-strong);color:var(--brand-500);
}
.empty-ico svg{width:26px;height:26px}
.empty-state h2{font-size:21px;font-weight:700;color:var(--tx-1)}
.empty-state p{margin:10px auto 22px;max-width:460px;font-size:14.5px;color:var(--tx-2)}
.empty-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:40px;background:var(--ink-800);border-top:1px solid var(--line)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding:56px 0 36px}
.foot-brand p{margin-top:16px;font-size:14px;color:var(--tx-2);max-width:340px;line-height:1.8}
.foot-note{margin-top:12px;font-size:12.5px;color:var(--tx-3)}
.foot-title{font-size:14px;font-weight:600;color:var(--tx-1);margin-bottom:14px}
.foot-list{display:flex;flex-direction:column;gap:10px}
.foot-list a{font-size:14px;color:var(--tx-2);transition:color .18s}
.foot-list a:hover{color:var(--brand-300)}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:18px 0 26px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--tx-3);
}
.foot-bottom a{color:var(--tx-3)}
.foot-bottom a:hover{color:var(--brand-300)}

/* ---------- 底部转化条 ---------- */
.bottom-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:45;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(10,18,32,.86);
  backdrop-filter:blur(14px) saturate(1.2);
  border-top:1px solid var(--line);
  opacity:1;transform:translateY(0);
  transition:opacity .25s ease,transform .25s ease;
}
.bottom-cta p{font-size:13.5px;color:var(--tx-2)}
.bottom-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--brand-300);
}
.icon-btn:hover{border-color:var(--line-strong)}
.icon-btn svg{width:19px;height:19px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .read-grid{grid-template-columns:minmax(0,1fr) 260px;gap:32px}
}
@media (max-width:1023px){
  .sidebar{display:none}
  .topbar{display:flex}
  .main{margin-left:0}
  .page-top{padding-top:80px}
  .read-grid{grid-template-columns:minmax(0,1fr)}
  .aside-col{position:static;order:2}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr;padding:32px 26px}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;padding:44px 0 30px}
  .section{padding:68px 0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .card-grid{grid-template-columns:minmax(0,1fr);gap:18px}
  .jump-grid{grid-template-columns:minmax(0,1fr)}
  .jump-card.next{justify-content:flex-start;text-align:left}
  .article-body{font-size:16px}
  .bottom-cta p{display:none}
  .bottom-cta{justify-content:flex-end}
  .foot-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .section{padding:56px 0}
  .read-grid{gap:28px}
}
@media (min-width:1024px){
  .bottom-cta{left:var(--sidebar);transform:translateY(120%);opacity:0;justify-content:flex-end}
  .bottom-cta.is-visible{transform:translateY(0);opacity:1}
}
@media (max-width:1023px){
  body{padding-bottom:86px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .post-card:hover,.jump-card:hover,.btn:hover,.mini-card:hover{transform:none}
  .post-card:hover .post-thumb img{transform:none}
  .bottom-cta{opacity:1 !important;transform:none !important}
}

/* roulang page: category1 */
:root{
  --ink-900:#050A14;
  --ink-800:#0A1220;
  --ink-700:#101B2E;
  --ink-600:#17263D;
  --brand-500:#2CD4E8;
  --brand-600:#12A7C4;
  --brand-300:#8BEEF8;
  --accent-500:#FF7A45;
  --accent-600:#E85F2A;
  --violet-500:#6E5BFF;
  --tx-1:#EAF2FF;
  --tx-2:#A9B8CE;
  --tx-3:#6B7A90;
  --line:rgba(255,255,255,0.10);
  --line-strong:rgba(44,212,232,0.38);
  --glass:rgba(255,255,255,0.05);
  --glow-brand:0 0 0 1px rgba(44,212,232,0.35), 0 10px 34px -10px rgba(44,212,232,0.55);
  --glow-accent:0 0 0 1px rgba(255,122,69,0.35), 0 12px 36px -10px rgba(255,122,69,0.60);
  --r-card:18px;
  --r-lg:22px;
  --r-btn:12px;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--ink-900);
  color:var(--tx-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  padding-bottom:84px;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1.1em;text-align:left;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:0;}

:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px;}

/* ============ 顶部移动栏 ============ */
.topbar{
  position:fixed;top:0;left:0;right:0;height:56px;z-index:40;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 14px;
  background:rgba(10,18,32,.86);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid var(--line);
}
.topbar .brand{padding:0;margin:0;border:0;}
.burger{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--tx-1);
  transition:border-color .18s, background .18s;
}
.burger:hover{border-color:var(--line-strong);background:rgba(44,212,232,.10);}
.burger svg{width:20px;height:20px;}

/* ============ 品牌 ============ */
.brand{
  display:flex;align-items:center;gap:10px;
  margin:16px 14px 8px;padding:8px 10px;border-radius:14px;
  border:1px solid transparent;transition:border-color .18s, background .18s;
}
.brand:hover{border-color:var(--line);background:rgba(255,255,255,.03);}
.brand-mark{
  width:34px;height:34px;flex:0 0 auto;border-radius:11px;
  display:grid;place-items:center;color:var(--brand-500);
  background:rgba(44,212,232,.09);
  border:1px solid var(--line-strong);
  box-shadow:0 0 18px -6px rgba(44,212,232,.75);
}
.brand-mark svg{width:18px;height:18px;}
.brand-text{font-size:15px;font-weight:600;line-height:1.3;color:var(--tx-1);}

/* ============ 桌面侧栏 ============ */
.shell{
  position:fixed;top:0;left:0;bottom:0;width:240px;z-index:40;
  display:none;flex-direction:column;
  background:var(--ink-800);
  border-right:1px solid var(--line);
}
.shell-scroll{flex:1;overflow-y:auto;padding-bottom:12px;}
.side-nav{display:flex;flex-direction:column;gap:2px;padding:6px 0;}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;margin:0 12px;padding:0 14px;border-radius:12px;
  color:var(--tx-2);font-size:15px;
  transition:color .18s, background .18s;
}
.side-link svg{width:18px;height:18px;flex:0 0 auto;color:var(--tx-3);transition:color .18s;}
.side-link:hover{color:var(--tx-1);background:rgba(255,255,255,.05);}
.side-link:hover svg{color:var(--brand-500);}
.side-link.is-active{color:var(--tx-1);background:var(--glass);box-shadow:inset 0 0 0 1px rgba(255,255,255,.06);}
.side-link.is-active svg{color:var(--brand-500);}
.side-link.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;
  background:var(--accent-500);box-shadow:0 0 12px rgba(255,122,69,.85);
}
.shell-foot{
  border-top:1px solid var(--line);padding:16px 18px 20px;
}
.shell-foot .mini-title{font-size:13px;color:var(--tx-3);margin:0 0 8px;}
.shell-foot a.mini-link{
  display:flex;align-items:center;gap:8px;height:40px;border-radius:10px;
  color:var(--tx-2);font-size:14px;transition:color .18s, background .18s;
}
.shell-foot a.mini-link:hover{color:var(--brand-300);background:rgba(44,212,232,.08);}
.shell-foot a.mini-link svg{width:16px;height:16px;color:var(--brand-500);}

/* ============ 抽屉 ============ */
.scrim{
  position:fixed;inset:0;z-index:50;background:rgba(3,8,16,.62);
  opacity:0;visibility:hidden;transition:opacity .24s ease, visibility .24s ease;
}
.scrim.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;z-index:60;
  background:var(--ink-800);border-right:1px solid var(--line);
  transform:translateX(-100%);transition:transform .28s cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 14px 6px;
}
.drawer-head .brand{margin:0;padding:6px 6px;}
.drawer-close{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--tx-2);transition:border-color .18s, color .18s, background .18s;
}
.drawer-close:hover{color:var(--tx-1);border-color:var(--line-strong);background:rgba(44,212,232,.10);}
.drawer-nav{flex:1;overflow-y:auto;padding:8px 0 20px;}
.drawer .side-link{height:48px;font-size:16px;margin:0 12px;}
body.no-scroll{overflow:hidden;}

/* ============ 页面主体 ============ */
.page{margin-left:0;}
.page > main{padding-top:56px;}
.section{padding:56px 0;}
.section-inner{position:relative;}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;overflow:hidden;
  min-height:340px;display:flex;align-items:center;
  border-bottom:1px solid var(--line);
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;
  opacity:.45;transform:scale(1.04);
}
.cat-hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(90deg, rgba(5,10,20,.97) 0%, rgba(5,10,20,.86) 44%, rgba(5,10,20,.48) 100%);
}
.cat-hero .container{position:relative;z-index:2;padding-top:72px;padding-bottom:56px;}
.cat-hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;font-size:13px;
  color:var(--brand-300);background:rgba(110,91,255,.16);
  border:1px solid rgba(110,91,255,.34);margin-bottom:18px;
}
.cat-hero h1{
  font-size:clamp(30px,5vw,48px);font-weight:700;line-height:1.22;
  margin:0 0 16px;max-width:16ch;
}
.cat-hero .lead{
  font-size:17px;color:var(--tx-2);max-width:62ch;margin:0 0 26px;line-height:1.85;
}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px 34px;}
.hero-stats li{display:flex;flex-direction:column;gap:2px;}
.hero-stats strong{
  font-size:22px;font-weight:700;color:var(--accent-500);line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.hero-stats span{font-size:13px;color:var(--tx-3);}

/* ============ 标签 chips ============ */
.chips-bar{
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg, rgba(16,27,46,.6) 0%, rgba(5,10,20,0) 100%);
}
.chips-inner{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  padding:18px 0;
}
.chips-label{font-size:13px;color:var(--tx-3);flex:0 0 auto;}
.chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:999px;font-size:14px;color:var(--tx-2);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:color .18s, border-color .18s, background .18s, transform .18s;
}
.chip:hover{color:var(--tx-1);border-color:var(--line-strong);background:rgba(44,212,232,.08);transform:translateY(-2px);}
.chip.is-active{color:var(--brand-300);border-color:var(--line-strong);background:rgba(44,212,232,.12);box-shadow:var(--glow-brand);}
.chip:active{transform:translateY(0);}

/* ============ 内容流 ============ */
.flow{
  display:grid;gap:28px;align-items:center;
  padding:48px 0;
}
.flow-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);}
.flow-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  background:var(--ink-700);
  transition:transform .45s cubic-bezier(.2,.7,.3,1);
}
.flow-media:hover img{transform:scale(1.03);}
.flow-tag{
  position:absolute;left:14px;top:14px;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;color:var(--brand-300);
  background:rgba(10,18,32,.72);border:1px solid var(--line-strong);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.flow-text h2{
  font-size:clamp(24px,3.4vw,34px);line-height:1.3;margin:0 0 16px;
}
.flow-text h2 .num{
  display:inline-block;font-size:14px;font-weight:600;color:var(--accent-500);
  margin-right:10px;transform:translateY(-6px);font-variant-numeric:tabular-nums;
}
.flow-text p{color:var(--tx-2);font-size:16px;}
.flow-list{display:flex;flex-direction:column;gap:12px;margin:20px 0 22px;}
.flow-list li{
  position:relative;padding-left:24px;color:var(--tx-2);font-size:15px;line-height:1.75;
}
.flow-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:12px;height:2px;border-radius:2px;
  background:var(--brand-500);box-shadow:0 0 10px rgba(44,212,232,.7);
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-500);font-size:15px;font-weight:600;
  transition:color .18s;
}
.link-arrow svg{width:16px;height:16px;transition:transform .18s;}
.link-arrow:hover{color:var(--brand-300);}
.link-arrow:hover svg{transform:translateX(3px);}

.rule{
  height:1px;border:0;margin:0;
  background:linear-gradient(90deg, rgba(44,212,232,0) 0%, rgba(44,212,232,.34) 50%, rgba(44,212,232,0) 100%);
}

/* ============ 数据条 ============ */
.statbar{
  border-radius:var(--r-lg);padding:26px 24px;
  background:var(--glass);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  box-shadow:0 18px 40px -24px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.10);
  display:grid;gap:22px;
}
.statbar-head h2{font-size:20px;font-weight:600;margin:0 0 6px;}
.statbar-head p{margin:0;font-size:14px;color:var(--tx-3);}
.statbar-grid{display:grid;gap:20px;}
.statbar-item{
  border-left:3px solid rgba(44,212,232,.5);padding-left:16px;
}
.statbar-item strong{
  display:block;font-size:26px;font-weight:700;color:var(--accent-500);
  line-height:1.2;font-variant-numeric:tabular-nums;
}
.statbar-item span{font-size:13px;color:var(--tx-2);}

/* ============ FAQ ============ */
.faq-grid{display:grid;gap:32px;}
.faq-side h2{font-size:clamp(24px,3.4vw,34px);margin:0 0 14px;}
.faq-side p{color:var(--tx-2);font-size:15px;margin:0 0 22px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 4px;text-align:left;
  font-size:16px;font-weight:600;color:var(--tx-1);
  transition:color .18s;
}
.faq-q:hover{color:var(--brand-300);}
.faq-icon{
  width:26px;height:26px;flex:0 0 auto;border-radius:8px;
  display:grid;place-items:center;color:var(--brand-500);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:transform .24s cubic-bezier(.2,.7,.3,1), color .18s, border-color .18s;
}
.faq-icon svg{width:14px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--accent-500);border-color:rgba(255,122,69,.4);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .26s cubic-bezier(.2,.7,.3,1);
}
.faq-a p{
  margin:0;padding:0 44px 20px 4px;font-size:15px;color:var(--tx-2);line-height:1.85;
}

/* ============ CTA ============ */
.cta-card{
  position:relative;border-radius:var(--r-lg);padding:30px 24px;
  background:var(--glass);border:1px solid rgba(44,212,232,.28);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  box-shadow:0 0 70px -34px rgba(44,212,232,.9), inset 0 1px 0 rgba(255,255,255,.12);
  display:grid;gap:24px;
}
.cta-card h2{font-size:clamp(22px,3vw,30px);margin:0 0 10px;}
.cta-card p{margin:0;color:var(--tx-2);font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .18s cubic-bezier(.2,.7,.3,1), box-shadow .18s, background .18s, border-color .18s, color .18s;
}
.btn svg{width:17px;height:17px;}
.btn-primary{
  background:linear-gradient(135deg, var(--accent-500), var(--accent-600));
  color:#1B0C05;box-shadow:var(--glow-accent);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,122,69,.5), 0 16px 40px -12px rgba(255,122,69,.78);}
.btn-primary:active{transform:translateY(0);background:linear-gradient(135deg, var(--accent-600), var(--accent-600));}
.btn-ghost{
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--tx-1);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--line-strong);background:rgba(44,212,232,.08);}
.btn-ghost:active{transform:translateY(0);background:rgba(44,212,232,.14);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:64px;background:var(--ink-800);
  border-top:1px solid var(--line);padding:56px 0 0;
}
.foot-grid{display:grid;gap:32px;}
.foot-brand p{margin:16px 0 0;color:var(--tx-2);font-size:14px;line-height:1.85;max-width:42ch;}
.foot-brand .foot-note{color:var(--tx-3);font-size:13px;margin-top:10px;}
.site-footer .brand{padding:0;margin:0;border:0;}
.foot-title{font-size:14px;font-weight:600;color:var(--tx-1);margin:0 0 14px;}
.foot-list{display:flex;flex-direction:column;gap:10px;}
.foot-list a{color:var(--tx-2);font-size:14px;transition:color .18s, padding-left .18s;}
.foot-list a:hover{color:var(--brand-300);padding-left:4px;}
.foot-bottom{
  margin-top:40px;padding:20px 0 28px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:var(--tx-3);
}
.foot-bottom a{color:var(--tx-3);transition:color .18s;}
.foot-bottom a:hover{color:var(--brand-300);}

/* ============ 移动底部转化条 ============ */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:45;
  display:flex;align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(10,18,32,.9);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border-top:1px solid var(--line);
}
.mobile-bar .bar-text{flex:1;min-width:0;font-size:13px;color:var(--tx-2);line-height:1.5;}
.mobile-bar .btn{height:46px;padding:0 18px;font-size:15px;}

/* ============ 响应式 ============ */
@media (min-width:640px){
  .statbar{padding:30px 32px;}
  .statbar-grid{grid-template-columns:repeat(3,1fr);}
}

@media (min-width:768px){
  .container{padding:0 28px;}
  .section{padding:72px 0;}
  .flow{padding:56px 0;}
  .cat-hero .container{padding-top:88px;padding-bottom:72px;}
}

@media (min-width:1024px){
  body{padding-bottom:0;}
  .container{padding:0 32px;}
  .topbar{display:none;}
  .shell{display:flex;}
  .page{margin-left:240px;}
  .page > main{padding-top:0;}
  .scrim,.drawer{display:none;}
  .section{padding:88px 0;}
  .cat-hero{min-height:360px;}
  .cat-hero .container{padding-top:56px;padding-bottom:56px;}
  .flow{grid-template-columns:1fr 1fr;gap:56px;padding:64px 0;}
  .flow.reverse .flow-media{order:2;}
  .flow.reverse .flow-text{order:1;}
  .faq-grid{grid-template-columns:4fr 8fr;gap:56px;}
  .cta-card{grid-template-columns:1fr auto;align-items:center;padding:44px 48px;}
  .cta-actions{justify-content:flex-end;}
  .foot-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
  .mobile-bar{display:none;}
  .statbar{grid-template-columns:minmax(200px,1fr) 2fr;align-items:center;gap:40px;}
}

@media (min-width:1280px){
  .section{padding:104px 0;}
  .flow{grid-template-columns:6fr 6fr;gap:64px;}
}

@media (min-width:1536px){
  .container{max-width:1320px;}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .btn:hover,.chip:hover,.flow-media:hover img,.link-arrow:hover svg{transform:none;}
}

/* roulang page: category3 */
:root{
  --ink-900:#050A14;
  --ink-800:#0A1220;
  --ink-700:#101B2E;
  --ink-600:#17263D;
  --brand-500:#2CD4E8;
  --brand-600:#12A7C4;
  --brand-300:#8BEEF8;
  --accent-500:#FF7A45;
  --accent-600:#E85F2A;
  --violet-500:#6E5BFF;
  --tx-1:#EAF2FF;
  --tx-2:#A9B8CE;
  --tx-3:#6B7A90;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(44,212,232,.38);
  --glass:rgba(255,255,255,.05);
  --glow-brand:0 0 0 1px rgba(44,212,232,.35),0 10px 34px -10px rgba(44,212,232,.55);
  --glow-accent:0 0 0 1px rgba(255,122,69,.35),0 12px 36px -10px rgba(255,122,69,.60);
  --r-card:18px;
  --r-lg:22px;
  --r-btn:12px;
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--tx-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-locked{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:8px}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 28px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- 品牌 ---------- */
.brand{display:inline-flex;align-items:center;gap:10px;border-radius:14px;padding:6px 10px;border:1px solid transparent;transition:border-color .2s,background .2s}
.brand:hover{border-color:var(--line);background:rgba(255,255,255,.04)}
.brand-mark{
  width:34px;height:34px;flex:0 0 auto;border-radius:11px;display:grid;place-items:center;
  color:var(--brand-500);
  background:linear-gradient(160deg,rgba(44,212,232,.20),rgba(44,212,232,.02));
  border:1px solid rgba(44,212,232,.35);
  box-shadow:0 0 18px -6px rgba(44,212,232,.75);
}
.brand-mark svg{width:19px;height:19px}
.brand-text{font-size:15px;font-weight:600;color:var(--tx-1);letter-spacing:.2px;white-space:nowrap}
@media(min-width:1024px){.brand-text{font-size:16px}}

/* ---------- 侧边导航（App Shell） ---------- */
.sidebar{
  position:fixed;top:0;bottom:0;left:0;width:280px;z-index:60;
  display:flex;flex-direction:column;
  background:var(--ink-800);
  border-right:1px solid var(--line);
  transform:translateX(-100%);
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
}
.sidebar.is-open{transform:translateX(0)}
@media(min-width:1024px){
  .sidebar{width:var(--sidebar-w);transform:none;z-index:40}
}
.sidebar-head{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:14px 12px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:40px;height:40px;flex:0 0 auto;display:grid;place-items:center;
  border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--tx-1);cursor:pointer;transition:background .18s,border-color .18s;
}
.drawer-close:hover{background:rgba(44,212,232,.10);border-color:var(--line-strong)}
.drawer-close svg{width:18px;height:18px}
@media(min-width:1024px){.drawer-close{display:none}}

.side-nav{flex:1;display:flex;flex-direction:column;gap:6px;padding:14px 12px;overflow-y:auto}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px 0 16px;border-radius:12px;
  color:var(--tx-2);font-size:15px;font-weight:500;
  transition:background .18s,color .18s;
}
.side-link svg{width:19px;height:19px;flex:0 0 auto;color:var(--tx-3);transition:color .18s}
.side-link:hover{background:rgba(255,255,255,.05);color:var(--tx-1)}
.side-link:hover svg{color:var(--brand-500)}
.side-link.is-active{background:var(--glass);color:var(--tx-1)}
.side-link.is-active svg{color:var(--brand-500)}
.side-link.is-active::before{
  content:"";position:absolute;left:2px;top:9px;bottom:9px;width:3px;border-radius:999px;
  background:var(--accent-500);box-shadow:0 0 12px rgba(255,122,69,.85);
}
@media(max-width:1023px){
  .side-link{font-size:16px;height:48px}
}
.sidebar-foot{padding:14px 16px 20px;border-top:1px solid var(--line)}
.side-cta{
  display:flex;align-items:center;justify-content:center;
  height:46px;border-radius:var(--r-btn);
  background:linear-gradient(135deg,var(--accent-500),var(--accent-600));
  color:#fff;font-size:14px;font-weight:600;
  box-shadow:var(--glow-accent);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s;
}
.side-cta:hover{transform:translateY(-2px)}
.side-cta:active{transform:translateY(0)}
.side-note{margin:12px 0 0;font-size:12px;line-height:1.7;color:var(--tx-3)}

/* ---------- 移动顶栏 ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;height:56px;z-index:40;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 12px;
  background:rgba(10,18,32,.84);
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid var(--line);
}
.hamburger{
  width:44px;height:44px;display:grid;place-items:center;flex:0 0 auto;
  border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.05);
  color:var(--tx-1);cursor:pointer;transition:background .18s,border-color .18s;
}
.hamburger:hover{background:rgba(44,212,232,.10);border-color:var(--line-strong)}
.hamburger svg{width:20px;height:20px}
@media(min-width:1024px){.topbar{display:none}}

.drawer-mask{
  position:fixed;inset:0;z-index:50;
  background:rgba(3,8,16,.62);
  opacity:0;visibility:hidden;
  transition:opacity .25s,visibility .25s;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
@media(min-width:1024px){.drawer-mask{display:none}}

/* ---------- 主内容 ---------- */
.main{padding-top:56px}
@media(min-width:1024px){.main{margin-left:var(--sidebar-w);padding-top:0}}

/* ---------- 分类 Hero ---------- */
.cat-hero{position:relative;overflow:hidden;background:var(--ink-800);border-bottom:1px solid var(--line)}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  opacity:.34;
}
.cat-hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(5,10,20,.95) 0%,rgba(5,10,20,.80) 46%,rgba(5,10,20,.42) 100%);
}
.cat-hero-inner{position:relative;display:flex;flex-direction:column;gap:18px;padding:52px 0;min-height:320px;justify-content:center}
@media(min-width:768px){.cat-hero-inner{padding:68px 0}}
@media(min-width:1024px){.cat-hero-inner{padding:84px 0;min-height:380px}}
.cat-badge{
  align-self:flex-start;display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--brand-300);
  background:rgba(110,91,255,.16);border:1px solid rgba(110,91,255,.32);
}
.hero-title{
  font-size:clamp(30px,5vw,48px);font-weight:700;line-height:1.22;letter-spacing:0;
  max-width:16em;
}
.hero-lead{font-size:clamp(16px,2vw,19px);line-height:1.8;color:var(--tx-2);max-width:34em}
.hero-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
.stat-mini{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.04);
  font-size:13.5px;color:var(--tx-2);
}
.stat-mini b{color:var(--accent-500);font-weight:700;font-family:Inter,system-ui,sans-serif}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,background .18s,border-color .18s,color .18s;
}
.btn svg{width:17px;height:17px}
.btn-primary{
  background:linear-gradient(135deg,var(--accent-500),var(--accent-600));
  color:#fff;box-shadow:var(--glow-accent);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,122,69,.5),0 16px 40px -12px rgba(255,122,69,.75)}
.btn-primary:active{transform:translateY(0);background:linear-gradient(135deg,var(--accent-600),#c94f1f)}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line);color:var(--tx-1)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--line-strong);background:rgba(44,212,232,.08)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
@media(max-width:520px){
  .hero-actions .btn{width:100%}
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-500);font-size:15px;font-weight:600;
}
.link-arrow svg{width:16px;height:16px;transition:transform .2s}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- 板块 ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:88px 0}}
@media(min-width:1024px){.section{padding:112px 0}}
.section--tight{padding:40px 0}
@media(min-width:768px){.section--tight{padding:56px 0}}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;
  margin-bottom:28px;
}
.sec-eyebrow{font-size:13px;font-weight:600;letter-spacing:2px;color:var(--brand-500);margin-bottom:8px}
.sec-title{font-size:clamp(24px,3.4vw,34px);font-weight:700;line-height:1.3}
.sec-sub{margin-top:12px;font-size:15px;line-height:1.85;color:var(--tx-2);max-width:52em}
.divider{height:1px;background:linear-gradient(90deg,transparent,rgba(44,212,232,.35),transparent)}

/* chips */
.chips{display:flex;gap:10px;overflow-x:auto;padding:2px 0 6px;scrollbar-width:thin}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--tx-2);font-size:13.5px;white-space:nowrap;
  transition:background .18s,color .18s,border-color .18s,box-shadow .18s;
}
.chip:hover{color:var(--tx-1);border-color:var(--line-strong);background:rgba(44,212,232,.08)}
.chip.is-active{
  color:var(--brand-300);border-color:var(--line-strong);background:rgba(44,212,232,.12);
  box-shadow:0 8px 22px -14px rgba(44,212,232,.9);
}

/* ---------- 受理范围 ---------- */
.accept-grid{display:grid;gap:20px}
@media(min-width:1024px){.accept-grid{grid-template-columns:7fr 5fr;align-items:start}}
.row-stack{display:grid;gap:16px}
.row-card{
  display:flex;gap:14px;padding:20px;border-radius:var(--r-card);
  background:var(--ink-800);border:1px solid var(--line);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),border-color .2s,background .2s,box-shadow .2s;
}
.row-card:hover{transform:translateY(-4px);border-color:rgba(44,212,232,.42);background:var(--ink-700);box-shadow:0 18px 40px -24px rgba(0,0,0,.9)}
.num-chip{
  width:42px;height:42px;flex:0 0 auto;border-radius:12px;display:grid;place-items:center;
  font-size:14px;font-weight:700;color:var(--brand-300);
  background:rgba(110,91,255,.14);border:1px solid rgba(110,91,255,.30);
  font-family:Inter,system-ui,sans-serif;
}
.row-card h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:6px}
.row-card p{font-size:14.5px;line-height:1.85;color:var(--tx-2)}
.media-card{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--ink-700);
}
.media-card img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1)}
.media-card:hover img{transform:scale(1.03)}
.media-cap{
  position:absolute;left:0;right:0;bottom:0;padding:18px;
  background:linear-gradient(to top,rgba(5,10,20,.94),rgba(5,10,20,0));
  font-size:14px;line-height:1.75;color:var(--tx-1);
}

/* ---------- 时间轴 ---------- */
.timeline{display:grid;gap:18px;position:relative}
@media(min-width:1024px){
  .timeline{grid-template-columns:repeat(4,1fr);padding-top:44px}
  .timeline::before{
    content:"";position:absolute;top:20px;left:4%;right:4%;
    border-top:1px dashed rgba(44,212,232,.35);
  }
}
.step{
  position:relative;padding:22px 20px;border-radius:var(--r-card);
  background:var(--ink-800);border:1px solid var(--line);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),border-color .2s,background .2s;
}
.step:hover{transform:translateY(-4px);border-color:rgba(44,212,232,.42);background:var(--ink-700)}
.step-num{
  width:38px;height:38px;border-radius:999px;display:grid;place-items:center;margin-bottom:14px;
  font-size:15px;font-weight:700;color:#04222a;font-family:Inter,system-ui,sans-serif;
  background:linear-gradient(140deg,var(--brand-300),var(--brand-600));
  box-shadow:0 10px 22px -12px rgba(44,212,232,.95);
}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px}
.step p{font-size:14.5px;line-height:1.85;color:var(--tx-2)}

/* ---------- 提交前提示 ---------- */
.tip-bar{
  margin-top:24px;padding:24px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(1.2);
  display:grid;gap:20px;
}
@media(min-width:1024px){.tip-bar{grid-template-columns:260px 1fr;align-items:center}}
.tip-bar h3{font-size:19px;font-weight:600;line-height:1.5}
.tip-bar .tip-note{margin-top:8px;font-size:14px;color:var(--tx-2);line-height:1.8}
.check-list{display:grid;gap:12px}
@media(min-width:768px){.check-list{grid-template-columns:1fr}}
.check{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--tx-2);line-height:1.8}
.check svg{width:18px;height:18px;flex:0 0 auto;margin-top:5px;color:var(--brand-500)}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;gap:28px}
@media(min-width:1024px){.faq-wrap{grid-template-columns:minmax(0,1fr) minmax(0,1.9fr);gap:48px;align-items:start}}
.faq-aside p{margin-top:14px;font-size:15px;line-height:1.9;color:var(--tx-2)}
.faq-aside .btn{margin-top:22px}
.faq-panel{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:14px 0;background:none;border:0;
  font-size:16.5px;font-weight:600;color:var(--tx-1);text-align:left;cursor:pointer;
  transition:color .18s;
}
.faq-q:hover{color:var(--brand-300)}
.faq-icon{
  width:26px;height:26px;flex:0 0 auto;border-radius:999px;
  display:grid;place-items:center;color:var(--brand-500);
  border:1px solid var(--line);transition:transform .25s cubic-bezier(.2,.7,.3,1),background .2s,border-color .2s;
}
.faq-icon svg{width:14px;height:14px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:rgba(44,212,232,.12);border-color:var(--line-strong)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s cubic-bezier(.2,.7,.3,1)}
.faq-a p{padding:0 40px 20px 0;font-size:15px;line-height:1.9;color:var(--tx-2)}

/* ---------- 分类入口 ---------- */
.cat-grid{display:grid;gap:20px}
@media(min-width:768px){.cat-grid{grid-template-columns:repeat(2,1fr)}}
.cat-card{
  display:flex;flex-direction:column;gap:12px;padding:24px;border-radius:var(--r-card);
  background:var(--ink-800);border:1px solid var(--line);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),border-color .2s,background .2s;
}
.cat-card:hover{transform:translateY(-4px);border-color:rgba(44,212,232,.42);background:var(--ink-700)}
.cat-card h3{font-size:20px;font-weight:600}
.cat-card p{font-size:14.5px;line-height:1.85;color:var(--tx-2)}
.badge{
  align-self:flex-start;display:inline-flex;align-items:center;height:25px;padding:0 10px;
  border-radius:999px;font-size:12.5px;color:#C6BDFF;
  background:rgba(110,91,255,.14);border:1px solid rgba(110,91,255,.28);
}
.cat-card .link-arrow{margin-top:4px}

/* ---------- 最终 CTA ---------- */
.cta-card{
  padding:28px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(44,212,232,.12),rgba(110,91,255,.10));
  border:1px solid var(--line-strong);
  box-shadow:0 30px 60px -30px rgba(44,212,232,.65);
  backdrop-filter:blur(14px) saturate(1.2);
  display:grid;gap:22px;
}
@media(min-width:1024px){.cta-card{grid-template-columns:1fr auto;align-items:center;padding:36px}}
.cta-card h2{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.35}
.cta-card p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--tx-2);max-width:40em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media(max-width:520px){.cta-actions .btn{width:100%}}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-800);border-top:1px solid var(--line);
  padding:52px 0 26px;
}
@media(min-width:1024px){.site-footer{margin-left:var(--sidebar-w)}}
@media(max-width:1023px){.site-footer{padding-bottom:104px}}
.foot-grid{display:grid;gap:30px}
@media(min-width:768px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}}
.foot-brand p{margin-top:14px;max-width:330px;font-size:14px;line-height:1.85;color:var(--tx-2)}
.foot-note{color:var(--tx-3);font-size:12.5px}
.foot-title{margin-bottom:14px;font-size:14px;font-weight:600;color:var(--tx-1);letter-spacing:.4px}
.foot-list{display:flex;flex-direction:column;gap:10px}
.foot-list a{display:inline-block;font-size:14px;color:var(--tx-2);transition:color .18s,transform .18s}
.foot-list a:hover{color:var(--brand-300);transform:translateX(3px)}
.foot-bottom{
  margin-top:34px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  font-size:12.5px;color:var(--tx-3);
}
.foot-bottom a{color:var(--tx-3);transition:color .18s}
.foot-bottom a:hover{color:var(--brand-300)}

/* ---------- 底部转化条 ---------- */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:45;
  display:flex;align-items:center;gap:12px;
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  background:rgba(10,18,32,.92);
  backdrop-filter:blur(14px) saturate(1.2);
  border-top:1px solid var(--line);
}
.bottom-bar .bar-text{flex:1;font-size:13.5px;line-height:1.6;color:var(--tx-2)}
@media(min-width:1024px){
  .bottom-bar{
    height:64px;padding:0 32px;justify-content:flex-end;
    opacity:0;visibility:hidden;transform:translateY(12px);
    transition:opacity .25s,transform .25s,visibility .25s;
  }
  .bottom-bar.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
}
.icon-btn{
  width:44px;height:44px;flex:0 0 auto;display:grid;place-items:center;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--brand-500);
  transition:background .18s,border-color .18s,transform .18s;
}
.icon-btn:hover{background:rgba(44,212,232,.12);border-color:var(--line-strong);transform:translateY(-2px)}
.icon-btn svg{width:19px;height:19px}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .btn:hover,.row-card:hover,.step:hover,.cat-card:hover,.media-card:hover img{transform:none !important}
}

/* roulang page: category2 */
:root{
  --ink-900:#050A14;
  --ink-800:#0A1220;
  --ink-700:#101B2E;
  --ink-600:#17263D;
  --brand-500:#2CD4E8;
  --brand-600:#12A7C4;
  --brand-300:#8BEEF8;
  --accent-500:#FF7A45;
  --accent-600:#E85F2A;
  --violet-500:#6E5BFF;
  --tx-1:#EAF2FF;
  --tx-2:#A9B8CE;
  --tx-3:#6B7A90;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(44,212,232,.38);
  --glass:rgba(255,255,255,.05);
  --glow-brand:0 0 0 1px rgba(44,212,232,.35),0 10px 34px -10px rgba(44,212,232,.55);
  --glow-accent:0 0 0 1px rgba(255,122,69,.35),0 12px 36px -10px rgba(255,122,69,.60);
  --r-card:18px;
  --r-lg:22px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--tx-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit}
p{margin:0 0 1.1em}
h1,h2,h3,h4{margin:0}
ul{margin:0;padding:0;list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:8px}
::selection{background:rgba(44,212,232,.3);color:#fff}

body .container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media (min-width:768px){body .container{padding:0 28px}}
@media (min-width:1024px){body .container{padding:0 32px}}

/* ---------- App Shell 侧栏 ---------- */
.app-side{
  position:fixed;top:0;left:0;bottom:0;width:240px;z-index:40;
  background:var(--ink-800);border-right:1px solid var(--line);
  display:flex;flex-direction:column;
}
.side-brand{display:flex;align-items:center;gap:10px;padding:22px 18px 18px;border-bottom:1px solid var(--line)}
.brand-mark{
  width:34px;height:34px;flex:none;display:flex;align-items:center;justify-content:center;
  border-radius:11px;color:var(--brand-500);
  background:linear-gradient(150deg,rgba(44,212,232,.20),rgba(110,91,255,.12));
  border:1px solid rgba(44,212,232,.42);
  box-shadow:0 0 18px -4px rgba(44,212,232,.65);
}
.brand-mark svg{width:19px;height:19px}
.brand-text{font-size:15px;font-weight:600;letter-spacing:0;color:var(--tx-1);line-height:1.35}
.side-nav{flex:1;overflow-y:auto;padding:14px 12px;display:flex;flex-direction:column;gap:6px}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;
  border-radius:12px;color:var(--tx-2);font-size:15px;border:1px solid transparent;
  transition:background .2s,color .2s,border-color .2s,transform .18s;
}
.side-link svg{width:18px;height:18px;flex:none;color:var(--tx-3);transition:color .2s}
.side-link:hover{color:var(--tx-1);background:rgba(255,255,255,.05)}
.side-link:hover svg{color:var(--brand-300)}
.side-link.is-active{color:var(--tx-1);background:var(--glass);border-color:var(--line-strong);box-shadow:0 0 0 1px rgba(44,212,232,.12) inset}
.side-link.is-active svg{color:var(--brand-500)}
.side-link.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--accent-500);
  box-shadow:0 0 12px -2px rgba(255,122,69,.9);
}
.side-foot{margin:0 12px 16px;padding:16px;border-radius:14px;background:var(--ink-700);border:1px solid var(--line)}
.side-foot-title{font-size:14px;font-weight:600;color:var(--tx-1);margin:0 0 6px}
.side-foot-text{font-size:12.5px;line-height:1.7;color:var(--tx-3);margin:0 0 12px}
.btn-sm{height:40px;font-size:13.5px;padding:0 16px;border-radius:10px;width:100%}

.app-main{padding-top:56px}
@media (min-width:1024px){.app-main{margin-left:240px;padding-top:0}}

/* ---------- 移动端顶栏 & 抽屉 ---------- */
.top-bar{
  position:fixed;top:0;left:0;right:0;height:56px;z-index:40;
  display:flex;align-items:center;justify-content:space-between;padding:0 14px;
  background:rgba(10,18,32,.84);backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid var(--line);
}
@media (min-width:1024px){.top-bar{display:none}}
.top-brand{display:flex;align-items:center;gap:9px}
.top-brand .brand-mark{width:30px;height:30px;border-radius:10px}
.top-brand .brand-text{font-size:14.5px}
.burger{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:12px;background:transparent;border:1px solid var(--line);cursor:pointer;
  transition:border-color .2s,background .2s;
}
.burger:hover{border-color:var(--line-strong);background:rgba(44,212,232,.08)}
.burger spam{display:block}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--tx-1)}
.burger span+span{margin-top:4px}

.drawer-mask{
  position:fixed;inset:0;z-index:50;background:rgba(3,8,16,.62);
  opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;
}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;z-index:60;
  background:var(--ink-800);border-right:1px solid var(--line);
  transform:translateX(-100%);transition:transform .28s cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;
}
body.drawer-open .drawer{transform:none}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
body.drawer-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:12px;
  background:transparent;border:1px solid var(--line);cursor:pointer;transition:border-color .2s,background .2s;
}
.drawer-close:hover{border-color:var(--line-strong);background:rgba(44,212,232,.08)}
.drawer-nav{padding:14px 14px;display:flex;flex-direction:column;gap:8px;overflow-y:auto}
.drawer-nav .side-link{height:48px;font-size:16px}
.drawer-nav .side-link.is-active::before{left:-14px}
@media (min-width:1024px){.drawer,.drawer-mask{display:none}}

/* ---------- 通用 ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:88px 0}}
.section-tight{padding-top:36px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.06em;
  color:var(--brand-300);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand-500)}
.h2{font-size:clamp(24px,3.4vw,34px);font-weight:700;line-height:1.3;color:var(--tx-1)}
.h3{font-size:20px;font-weight:600;line-height:1.45;color:var(--tx-1)}
.lead{font-size:16px;color:var(--tx-2);max-width:720px}
.muted{color:var(--tx-3);font-size:13px}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.divider{height:1px;background:linear-gradient(90deg,rgba(44,212,232,.35),rgba(255,255,255,.06),transparent);border:0;margin:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,background .18s,border-color .18s,color .18s;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent-500),var(--accent-600));
  color:#200D04;box-shadow:var(--glow-accent);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,122,69,.55),0 18px 42px -12px rgba(255,122,69,.8)}
.btn-primary:active{transform:translateY(0);background:linear-gradient(135deg,var(--accent-600),#C94D1C)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--tx-1)}
.btn-ghost:hover{border-color:rgba(44,212,232,.6);background:rgba(44,212,232,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);background:rgba(44,212,232,.14)}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-500);font-size:14.5px;font-weight:600;transition:color .2s}
.btn-link svg{width:16px;height:16px;transition:transform .2s}
.btn-link:hover{color:var(--brand-300)}
.btn-link:hover svg{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:25px;padding:0 11px;border-radius:999px;
  font-size:12px;line-height:1;background:rgba(110,91,255,.14);color:#C6BEFF;
  border:1px solid rgba(110,91,255,.3);
}
.badge-brand{background:rgba(44,212,232,.12);color:var(--brand-300);border-color:rgba(44,212,232,.32)}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:var(--ink-800);color:var(--tx-2);font-size:14px;
  transition:color .2s,border-color .2s,background .2s,transform .18s;
}
.chip:hover{color:var(--tx-1);border-color:rgba(44,212,232,.45);transform:translateY(-1px)}
.chip.is-active{color:var(--brand-300);border-color:rgba(44,212,232,.55);background:rgba(44,212,232,.10);box-shadow:0 0 0 1px rgba(44,212,232,.16)}

/* ---------- 卡片 ---------- */
.card{
  position:relative;border-radius:var(--r-card);background:var(--ink-800);
  border:1px solid var(--line);box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .22s cubic-bezier(.2,.7,.3,1),border-color .22s,box-shadow .22s;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.16),transparent 70%);
}
.card-glass{
  backdrop-filter:blur(14px) saturate(1.2);
  background:var(--glass);
}
.card-pad{padding:20px}
@media (min-width:1024px){.card-pad{padding:24px}}
.card-media{position:relative;aspect-ratio:16/9;background:var(--ink-700);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.card:hover{transform:translateY(-4px);border-color:rgba(44,212,232,.4)}
.card:hover .card-media img{transform:scale(1.03)}

.icon-chip{
  width:42px;height:42px;flex:none;border-radius:13px;display:flex;align-items:center;justify-content:center;
  color:var(--brand-500);background:rgba(44,212,232,.10);border:1px solid rgba(44,212,232,.3);
}
.icon-chip svg{width:20px;height:20px}
.icon-chip.violet{color:#B7AEFF;background:rgba(110,91,255,.12);border-color:rgba(110,91,255,.32)}
.icon-chip.orange{color:var(--accent-500);background:rgba(255,122,69,.10);border-color:rgba(255,122,69,.32)}

.list-row{
  display:flex;align-items:center;gap:14px;min-height:56px;padding:10px 14px;border-radius:12px;
  border:1px solid transparent;transition:background .2s,border-color .2s;
}
.list-row:hover{background:rgba(255,255,255,.04);border-color:var(--line)}
.list-row .arrow{margin-left:auto;color:var(--brand-500);width:16px;height:16px;flex:none}
.list-row .row-title{font-size:15px;color:var(--tx-1)}
.list-row .row-desc{font-size:13px;color:var(--tx-3);line-height:1.65}

.check-list{display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--tx-2);line-height:1.8}
.check-list li::before{
  content:"";flex:none;width:14px;height:2px;border-radius:2px;background:var(--brand-500);
  margin-top:13px;box-shadow:0 0 8px rgba(44,212,232,.7);
}

/* ---------- 分类 Hero ---------- */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);min-height:340px;display:flex;align-items:center;padding:72px 0 56px}
@media (min-width:1024px){.cat-hero{min-height:380px;padding:88px 0 72px}}
.cat-hero-bg{position:absolute;inset:0;background:#080E1B url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.34}
.cat-hero-mask{position:absolute;inset:0;background:linear-gradient(100deg,rgba(5,10,20,.97) 0%,rgba(5,10,20,.86) 52%,rgba(5,10,20,.60) 100%)}
.cat-hero-glow{position:absolute;right:-60px;bottom:-80px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(44,212,232,.18),transparent 65%);pointer-events:none}
.cat-hero-inner{position:relative;z-index:1;width:100%}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--tx-3);margin-bottom:18px}
.breadcrumb a{color:var(--tx-2);transition:color .2s}
.breadcrumb a:hover{color:var(--brand-300)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.h1{font-size:clamp(30px,5vw,48px);font-weight:700;line-height:1.22;letter-spacing:0;max-width:820px}
.hero-sub{margin-top:18px;font-size:16.5px;color:var(--tx-2);max-width:640px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:26px}
.hero-stat{display:flex;align-items:baseline;gap:8px;font-size:13.5px;color:var(--tx-3)}
.hero-stat b{font-size:19px;font-weight:700;color:var(--accent-500);font-variant-numeric:tabular-nums}

/* ---------- 粘性子导航 ---------- */
.subnav{
  position:sticky;top:56px;z-index:30;background:rgba(5,10,20,.86);
  backdrop-filter:blur(14px) saturate(1.2);border-bottom:1px solid var(--line);
  padding:14px 0;
}
@media (min-width:1024px){.subnav{top:0}}

/* ---------- Bento ---------- */
.bento{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:1024px){.bento{grid-template-columns:repeat(12,1fr);gap:28px}}
.col-7,.col-5,.col-12{grid-column:span 1}
@media (min-width:1024px){
  .col-7{grid-column:span 7}
  .col-5{grid-column:span 5}
  .col-12{grid-column:span 12}
}
.bento-card{display:flex;flex-direction:column;gap:18px;padding:24px;border-radius:var(--r-lg)}
.bento-copy{display:flex;flex-direction:column;gap:12px}
.bento-title{font-size:21px;font-weight:600;line-height:1.4}
.bento-text{font-size:15px;color:var(--tx-2);line-height:1.85}
.bento-figure{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;background:var(--ink-700)}
.bento-figure img{width:100%;height:100%;object-fit:cover}
.stat-bar{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media (min-width:768px){.stat-bar{grid-template-columns:repeat(4,1fr);gap:24px}}
.stat-item{padding:6px 0}
.stat-num{font-size:clamp(26px,3.6vw,36px);font-weight:700;color:var(--accent-500);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-label{font-size:13.5px;color:var(--tx-2);margin-top:6px}

/* ---------- 速查区 ---------- */
.split{display:grid;gap:24px;grid-template-columns:1fr;align-items:center}
@media (min-width:1024px){.split{grid-template-columns:6fr 6fr;gap:36px}}
.split-figure{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--ink-700);aspect-ratio:4/3}
.split-figure img{width:100%;height:100%;object-fit:cover}
.rows{border:1px solid var(--line);border-radius:var(--r-card);background:var(--ink-800);padding:8px}
.rows .list-row+.list-row{border-top:1px solid rgba(255,255,255,.06)}

/* ---------- 步骤时间轴 ---------- */
.steps{display:grid;gap:18px;grid-template-columns:1fr;position:relative}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr);gap:24px}}
.step{position:relative;padding:22px;border-radius:var(--r-card);background:var(--ink-800);border:1px solid var(--line);transition:transform .22s,border-color .22s}
.step:hover{transform:translateY(-4px);border-color:rgba(44,212,232,.4)}
.step-num{font-size:22px;font-weight:700;color:var(--accent-500);font-variant-numeric:tabular-nums;line-height:1}
.step-title{font-size:16.5px;font-weight:600;margin-top:12px}
.step-text{font-size:14px;color:var(--tx-2);margin-top:8px;line-height:1.8}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;gap:28px;grid-template-columns:1fr}
@media (min-width:1024px){.faq-wrap{grid-template-columns:4fr 8fr;gap:48px;align-items:start}}
.faq-aside{position:relative}
.faq-panel{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--glass);backdrop-filter:blur(14px) saturate(1.2);padding:6px 22px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;min-height:60px;padding:16px 0;
  background:none;border:0;cursor:pointer;text-align:left;font-size:16px;font-weight:600;color:var(--tx-1);
  transition:color .2s;
}
.faq-q:hover{color:var(--brand-300)}
.faq-plus{position:relative;width:18px;height:18px;flex:none;margin-left:auto;color:var(--brand-500);transition:transform .22s}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-plus::before{left:0;top:8px;width:18px;height:2px}
.faq-plus::after{left:8px;top:0;width:2px;height:18px;transition:opacity .22s}
.faq-item.is-open .faq-plus{transform:rotate(135deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{font-size:15px;color:var(--tx-2);padding:0 0 18px;margin:0;line-height:1.85}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-lg);padding:32px 24px;
  background:linear-gradient(120deg,rgba(44,212,232,.14),rgba(110,91,255,.10) 55%,rgba(255,122,69,.10));
  border:1px solid var(--line-strong);
  box-shadow:0 0 0 1px rgba(44,212,232,.10),0 30px 70px -34px rgba(44,212,232,.6);
  backdrop-filter:blur(14px) saturate(1.2);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
@media (min-width:1024px){.cta-card{padding:44px 44px}}
.cta-title{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.35}
.cta-text{font-size:15px;color:var(--tx-2);margin-top:10px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-actions .btn{width:100%}
@media (min-width:640px){.cta-actions .btn{width:auto}}

/* ---------- 底部固定条 ---------- */
.fixed-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:45;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(10,18,32,.88);backdrop-filter:blur(14px) saturate(1.2);
  border-top:1px solid var(--line);
}
.fixed-bar-text{font-size:13.5px;color:var(--tx-2);line-height:1.5}
.fixed-bar-actions{display:flex;align-items:center;gap:10px}
.fixed-bar .btn{height:46px;padding:0 18px;font-size:14.5px}
.icon-btn{
  width:46px;height:46px;flex:none;display:flex;align-items:center;justify-content:center;border-radius:12px;
  border:1px solid var(--line);color:var(--brand-500);background:transparent;transition:border-color .2s,background .2s,transform .18s;
}
.icon-btn:hover{border-color:var(--line-strong);background:rgba(44,212,232,.08);transform:translateY(-2px)}
.icon-btn svg{width:20px;height:20px}
@media (min-width:1024px){
  .fixed-bar{
    left:240px;height:64px;padding:0 32px;opacity:0;transform:translateY(8px);pointer-events:none;
    transition:opacity .3s,transform .3s;
  }
  .fixed-bar.is-visible{opacity:1;transform:none;pointer-events:auto}
}
@media (max-width:1023px){body{padding-bottom:78px}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-800);border-top:1px solid var(--line);padding:56px 0 24px;margin-top:0}
.foot-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:768px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.foot-brand p{font-size:14px;color:var(--tx-2);margin:16px 0 0;line-height:1.8;max-width:340px}
.foot-note{font-size:12.5px!important;color:var(--tx-3)!important}
.brand{display:flex;align-items:center;gap:10px}
.foot-title{font-size:14.5px;font-weight:600;color:var(--tx-1);margin:0 0 16px}
.foot-list{display:flex;flex-direction:column;gap:10px}
.foot-list a{font-size:14px;color:var(--tx-2);transition:color .2s,transform .2s}
.foot-list a:hover{color:var(--brand-300)}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;align-items:center;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--tx-3);
}
.foot-bottom a{color:var(--tx-2)}
.foot-bottom a:hover{color:var(--brand-300)}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .card:hover,.step:hover,.btn:hover,.chip:hover,.icon-btn:hover{transform:none!important}
  .card:hover .card-media img{transform:none!important}
}