/* roulang page: index */
:root{
  --primary:#1D5BFF;
  --primary-dark:#164BD6;
  --primary-soft:#EEF3FF;
  --teal:#12B5A5;
  --accent:#FF7A2F;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-alt:#F5F7FB;
  --border:#E6EAF2;
  --divider:#EDF0F5;
  --text:#0F172A;
  --text-2:#475569;
  --text-3:#94A3B8;
  --success:#16A34A;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(15,23,42,.04);
  --shadow-2:0 8px 24px rgba(15,23,42,.06);
  --shadow-3:0 16px 40px rgba(29,91,255,.14);
  --container:1200px;
  --font:"-apple-system","BlinkMacSystemFont","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
input,button{font-size:15px;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 32px;}}
.section{padding:48px 0;}
@media(min-width:768px){.section{padding:64px 0;}}
@media(min-width:1024px){.section{padding:84px 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-title{font-size:26px;font-weight:800;line-height:1.3;letter-spacing:-.01em;}
@media(min-width:1024px){.section-title{font-size:30px;}}
.section-desc{color:var(--text-2);font-size:15px;max-width:640px;margin-top:10px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--primary);text-transform:uppercase;}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--primary),var(--teal));border-radius:2px;}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--primary),var(--teal));
  color:#fff;font-weight:800;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(29,91,255,.28);
}
.brand-text{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:none;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;
  padding:0 12px;font-size:15px;color:var(--text-2);font-weight:500;
  transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:16px;height:2px;
  border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);font-weight:700;}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.command-search{
  display:none;align-items:center;gap:8px;height:38px;padding:0 8px 0 12px;
  border:1px solid var(--border);border-radius:var(--radius-btn);background:#fff;
  width:220px;transition:border-color .18s ease,box-shadow .18s ease;
}
.command-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(29,91,255,.14);}
.command-search svg{flex:0 0 auto;color:var(--text-3);}
.command-search input{border:0;outline:0;background:transparent;flex:1;min-width:0;color:var(--text);}
.command-search input::placeholder{color:var(--text-3);}
.kbd{
  font-size:11px;color:var(--text-3);border:1px solid var(--border);background:var(--surface-alt);
  border-radius:6px;padding:1px 6px;font-variant-numeric:tabular-nums;
}
.ghost-link{display:none;font-size:14px;color:var(--text-2);font-weight:500;transition:color .18s ease;}
.ghost-link:hover{color:var(--primary);}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--border);border-radius:var(--radius-btn);
  background:#fff;color:var(--text);
}
.menu-toggle:hover{border-color:var(--primary);color:var(--primary);}
@media(min-width:1024px){
  .nav-links{display:flex;}
  .command-search{display:flex;}
  .ghost-link{display:inline-flex;}
  .menu-toggle{display:none;}
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.42);opacity:0;visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;z-index:60;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);background:#fff;z-index:61;
  transform:translateX(100%);transition:transform .24s ease;padding:20px;
  display:flex;flex-direction:column;gap:18px;overflow-y:auto;
  box-shadow:-12px 0 40px rgba(15,23,42,.12);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:40px;height:40px;border:1px solid var(--border);background:#fff;border-radius:var(--radius-btn);font-size:18px;color:var(--text-2);}
.drawer-close:hover{border-color:var(--primary);color:var(--primary);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{padding:14px 4px;border-bottom:1px solid var(--divider);font-size:15px;color:var(--text-2);}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary);font-weight:700;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);font-size:15px;font-weight:700;
  border:1px solid transparent;transition:all .18s ease;white-space:nowrap;
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(29,91,255,.22);}
.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow-3);transform:translateY(-1px);}
.btn-outline{border-color:var(--primary);color:var(--primary);background:#fff;}
.btn-outline:hover{background:var(--primary-soft);}
.btn-ghost{color:var(--primary);padding:0 4px;height:auto;background:transparent;}
.btn-ghost .arrow{transition:transform .18s ease;}
.btn-ghost:hover .arrow{transform:translateX(2px);}
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;
  padding:5px 12px;font-size:12px;font-weight:700;
}
.badge-soft{background:var(--primary-soft);color:var(--primary);}
.badge-teal{background:rgba(18,181,165,.12);color:#0E8C80;}
.badge-orange{background:rgba(255,122,47,.13);color:#C9560E;}
.pill{
  display:inline-flex;align-items:center;border-radius:999px;padding:3px 10px;
  font-size:12px;font-weight:600;background:var(--primary-soft);color:var(--primary);
}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 88% -8%,rgba(18,181,165,.14),transparent 62%),
    linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--border);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(29,91,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(29,91,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 72%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 72%);
  pointer-events:none;
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1fr;gap:32px;
  padding:56px 0 40px;
}
@media(min-width:1024px){
  .hero-grid{grid-template-columns:5fr 6fr;gap:48px;padding:96px 0 64px;align-items:center;}
}
.hero-copy h1{
  font-size:clamp(30px,4vw,42px);font-weight:800;line-height:1.2;letter-spacing:-.02em;margin:16px 0 18px;
}
.hero-sub{font-size:16px;color:var(--text-2);max-width:520px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-points{display:flex;flex-wrap:wrap;gap:20px;margin-top:28px;}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);font-weight:500;}
.hero-points svg{color:var(--success);flex:0 0 auto;}
.hero-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--border);background:var(--primary-soft);box-shadow:var(--shadow-2);
}
.hero-media img{width:100%;height:280px;object-fit:cover;}
@media(min-width:768px){.hero-media img{height:360px;}}
@media(min-width:1024px){.hero-media img{height:440px;}}
.hero-media::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:4px;
  background:linear-gradient(90deg,var(--primary),var(--teal) 60%,var(--accent));
}
.trust-bar{
  position:relative;display:grid;grid-template-columns:repeat(2,1fr);gap:20px;
  padding:22px 0 32px;
}
@media(min-width:768px){.trust-bar{grid-template-columns:repeat(4,1fr);padding:24px 0 40px;}}
.trust-item{padding-left:16px;border-left:1px solid var(--divider);}
.trust-item:first-child{border-left:0;padding-left:0;}
@media(max-width:767px){
  .trust-item:nth-child(odd){border-left:0;padding-left:0;}
}
.trust-num{font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--text);}
.trust-num span{font-size:13px;color:var(--text-3);font-weight:600;margin-left:4px;}
.trust-label{font-size:13px;color:var(--text-3);margin-top:2px;}

/* 卖点非对称 */
.feature-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:1024px){.feature-grid{grid-template-columns:5fr 7fr;gap:24px;}}
.feature-main{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;gap:16px;
}
.feature-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.feature-num{font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.1em;font-variant-numeric:tabular-nums;}
.feature-main h3{font-size:20px;font-weight:800;}
.feature-main p{font-size:15px;color:var(--text-2);}
.feature-main figure{border-radius:var(--radius-img);overflow:hidden;background:var(--primary-soft);margin-top:auto;}
.feature-main figure img{width:100%;height:170px;object-fit:cover;}
.feature-side{display:grid;grid-template-columns:1fr;gap:20px;align-content:start;}
.feature-item{
  display:flex;align-items:flex-start;gap:16px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);padding:20px 22px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D8E2FF;}
.feature-item .idx{
  flex:0 0 auto;width:36px;height:36px;border-radius:10px;background:var(--primary-soft);
  color:var(--primary);font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.feature-item h3{font-size:17px;font-weight:700;margin-bottom:4px;}
.feature-item p{font-size:14px;color:var(--text-2);}
.feature-item .go{margin-left:auto;color:var(--primary);flex:0 0 auto;transition:transform .18s ease;}
.feature-item:hover .go{transform:translateX(3px);}

/* 场景演示 */
.demo{
  background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);
}
.demo-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:1024px){.demo-grid{grid-template-columns:6fr 6fr;gap:48px;align-items:start;}}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px;background:var(--surface-alt);padding:6px;border-radius:12px;}
.tab{
  flex:1 1 auto;min-width:110px;height:40px;border:0;background:transparent;border-radius:9px;
  font-size:14px;font-weight:600;color:var(--text-2);transition:all .18s ease;
}
.tab:hover{color:var(--primary);}
.tab.is-active{background:#fff;color:var(--primary);font-weight:700;box-shadow:var(--shadow-1);}
.tab-panel{display:none;}
.tab-panel.is-active{display:block;animation:fadeUp .2s ease both;}
@keyframes fadeUp{from{opacity:0;transform:translateY(4px);}to{opacity:1;transform:translateY(0);}}
.steps{position:relative;padding-left:4px;}
.step{display:flex;gap:16px;padding-bottom:24px;position:relative;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:15px;top:34px;bottom:0;width:1px;background:var(--divider);
}
.step:last-child::before{display:none;}
.step-dot{
  flex:0 0 auto;width:32px;height:32px;border-radius:999px;background:#fff;border:1px solid var(--border);
  color:var(--primary);font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;
  position:relative;z-index:1;font-variant-numeric:tabular-nums;
}
.step h4{font-size:16px;font-weight:700;margin-bottom:4px;}
.step p{font-size:14px;color:var(--text-2);}
.demo-media{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-2);background:var(--primary-soft);}
.demo-media img{width:100%;height:300px;object-fit:cover;}
@media(min-width:1024px){.demo-media img{height:420px;}}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:1024px){.news-grid{grid-template-columns:6fr 6fr;gap:32px;}}
.news-main{
  display:block;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease;
}
.news-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.news-main .thumb{background:var(--primary-soft);}
.news-main .thumb img{width:100%;height:230px;object-fit:cover;}
.news-main .body{padding:22px 24px 26px;}
.news-main h3{font-size:20px;font-weight:800;line-height:1.4;margin:12px 0 10px;transition:color .18s ease;}
.news-main:hover h3{color:var(--primary);}
.news-main p{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.news-list{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:6px 22px;box-shadow:var(--shadow-1);}
.news-row{
  display:flex;align-items:center;gap:16px;padding:18px 0;border-bottom:1px solid var(--divider);
  transition:background-color .18s ease;
}
.news-row:last-child{border-bottom:0;}
.news-row:hover{background:var(--bg);}
.news-row:hover .row-title{color:var(--primary);}
.row-thumb{flex:0 0 auto;width:76px;height:60px;border-radius:10px;overflow:hidden;background:var(--primary-soft);}
.row-thumb img{width:100%;height:100%;object-fit:cover;}
.row-body{min-width:0;flex:1;}
.row-title{font-size:15px;font-weight:700;line-height:1.5;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s ease;}
.row-desc{font-size:13px;color:var(--text-3);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.row-meta{flex:0 0 auto;display:none;flex-direction:column;align-items:flex-end;gap:6px;}
@media(min-width:640px){.row-meta{display:flex;}}
.row-time{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:#fff;border:1px dashed var(--border);border-radius:var(--radius-card);text-align:center;padding:32px;
}
.empty-state svg{color:var(--text-3);}
.empty-state p{font-size:14px;color:var(--text-3);}

/* 社会认同 */
.quote-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:1024px){.quote-grid{grid-template-columns:7fr 5fr;gap:24px;}}
.quote-main{
  position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:32px 28px 28px;box-shadow:var(--shadow-1);
}
.quote-main::before{
  content:"“";position:absolute;top:6px;left:22px;font-size:64px;line-height:1;color:rgba(29,91,255,.14);font-weight:800;
}
.quote-main blockquote{margin:22px 0 20px;font-size:17px;line-height:1.8;color:var(--text);font-weight:600;}
.quote-person{display:flex;align-items:center;gap:12px;padding-top:16px;border-top:1px solid var(--divider);}
.avatar{width:40px;height:40px;border-radius:999px;overflow:hidden;background:var(--primary-soft);flex:0 0 auto;}
.avatar img{width:100%;height:100%;object-fit:cover;}
.person-name{font-size:14px;font-weight:700;}
.person-role{font-size:13px;color:var(--text-3);}
.stars{display:flex;gap:3px;color:var(--accent);margin-bottom:10px;}
.quote-side{display:grid;grid-template-columns:1fr;gap:20px;align-content:start;}
.quote-small{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease;
}
.quote-small:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.quote-small p{font-size:14px;color:var(--text-2);line-height:1.75;}
.quote-small .who{display:flex;align-items:center;gap:8px;margin-top:14px;font-size:13px;color:var(--text-3);}
.logo-wall{
  display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px;
}
@media(min-width:768px){.logo-wall{grid-template-columns:repeat(6,1fr);gap:16px;}}
.logo-cell{
  height:60px;border:1px solid var(--border);border-radius:12px;background:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:#9AA6B8;letter-spacing:.04em;
  filter:grayscale(1);transition:all .2s ease;
}
.logo-cell:hover{filter:grayscale(0);color:var(--primary);border-color:#D8E2FF;}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:1024px){.faq-grid{grid-template-columns:5fr 7fr;gap:56px;align-items:start;}}
.faq-list{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--divider);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:700;color:var(--text);transition:color .18s ease,background-color .18s ease;
}
.faq-q:hover{color:var(--primary);background:var(--bg);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:999px;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:16px;line-height:1;
  transition:transform .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a p{padding:0 24px 22px;font-size:14px;color:var(--text-2);animation:fadeUp .2s ease both;}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;background:var(--primary-soft);
  border-top:1px solid #DDE6FF;border-bottom:1px solid #DDE6FF;
}
.cta-band .inner{position:relative;text-align:center;padding:56px 0;}
@media(min-width:1024px){.cta-band .inner{padding:80px 0;}}
.cta-band h2{font-size:26px;font-weight:800;line-height:1.35;letter-spacing:-.01em;}
@media(min-width:1024px){.cta-band h2{font-size:32px;}}
.cta-band p{margin:14px auto 0;max-width:520px;color:var(--text-2);font-size:15px;}
.cta-band .btns{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px;}
.cta-deco{
  position:absolute;right:-60px;bottom:-70px;width:220px;height:220px;border-radius:999px;
  background:radial-gradient(circle at 30% 30%,rgba(18,181,165,.28),rgba(29,91,255,.14) 60%,transparent 72%);
  pointer-events:none;
}
.cta-deco-2{
  position:absolute;left:-40px;top:-50px;width:180px;height:180px;border-radius:999px;
  border:1px solid rgba(29,91,255,.18);pointer-events:none;
}

/* 页脚 */
.site-footer{background:var(--surface-alt);border-top:1px solid var(--border);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.footer-grid{grid-template-columns:4fr 2fr 2.4fr 2.6fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-about{font-size:14px;color:var(--text-2);max-width:300px;}
.footer-contact{margin-top:16px;font-size:14px;color:var(--text-2);line-height:1.9;}
.footer-contact strong{color:var(--text);font-weight:700;}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:14px;}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list a{font-size:14px;color:var(--text-2);transition:color .18s ease;}
.footer-list a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:44px;border-top:1px solid var(--border);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* 底部固定条 */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:55;height:64px;
  background:#fff;border-top:1px solid var(--border);box-shadow:0 -8px 24px rgba(15,23,42,.08);
  transform:translateY(110%);transition:transform .24s ease;
}
.sticky-bar.is-visible{transform:translateY(0);}
.sticky-inner{display:flex;align-items:center;gap:14px;height:64px;}
.sticky-text{font-size:14px;font-weight:600;color:var(--text-2);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.sticky-close{
  flex:0 0 auto;width:36px;height:36px;border:1px solid var(--border);background:#fff;border-radius:9px;
  color:var(--text-3);font-size:16px;line-height:1;
}
.sticky-close:hover{border-color:var(--primary);color:var(--primary);}
@media(min-width:768px){.sticky-text{font-size:15px;color:var(--text);}}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --primary:#1D5BFF;
  --primary-dark:#164BD6;
  --primary-soft:#EEF3FF;
  --secondary:#12B5A5;
  --accent:#FF7A2F;
  --page:#F6F8FC;
  --card:#FFFFFF;
  --border:#E6EAF2;
  --line:#EDF0F5;
  --ink:#0F172A;
  --ink-2:#475569;
  --ink-3:#94A3B8;
  --success:#16A34A;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(15,23,42,.04);
  --shadow-2:0 8px 24px rgba(15,23,42,.06);
  --shadow-3:0 16px 40px rgba(29,91,255,.14);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(8px);
  -webkit-backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#1D5BFF,#12B5A5);
  color:#fff;font-weight:800;font-size:17px;letter-spacing:0;
  box-shadow:0 6px 16px rgba(29,91,255,.22);
}
.brand-text{font-weight:800;font-size:16px;color:var(--ink);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;
  padding:0 14px;font-size:14.5px;font-weight:600;color:var(--ink-2);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:230px;height:40px;padding:0 10px 0 12px;
  border:1px solid var(--border);border-radius:var(--radius-btn);
  background:#fff;transition:border-color .18s ease,box-shadow .18s ease;
}
.command-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(29,91,255,.12);}
.command-search svg{width:16px;height:16px;color:var(--ink-3);flex-shrink:0;}
.command-search input{flex:1;min-width:0;border:0;outline:none;background:transparent;font-size:14px;}
.command-search input::placeholder{color:var(--ink-3);}
.kbd{
  flex-shrink:0;font-size:11px;font-weight:600;color:var(--ink-3);
  border:1px solid var(--border);border-bottom-width:2px;border-radius:6px;
  padding:1px 6px;background:#F8FAFC;
}
.link-quiet{font-size:14px;font-weight:600;color:var(--ink-2);padding:8px 4px;white-space:nowrap;}
.link-quiet:hover{color:var(--primary);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 1px 2px rgba(15,23,42,.04);}
.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow-3);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(29,91,255,.2);}
.btn-outline{border:1px solid var(--primary);color:var(--primary);background:#fff;}
.btn-outline:hover{background:var(--primary-soft);}
.btn-ghost{color:var(--primary);font-weight:700;padding:0;height:auto;}
.btn-ghost .arrow{transition:transform .18s ease;display:inline-block;}
.btn-ghost:hover .arrow{transform:translateX(2px);}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--border);background:#fff;align-items:center;justify-content:center;
}
.menu-toggle:hover{border-color:var(--primary);color:var(--primary);}
.menu-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.42);z-index:60;
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;z-index:61;
  background:#fff;box-shadow:-12px 0 40px rgba(15,23,42,.12);
  transform:translateX(102%);transition:transform .22s ease;
  padding:20px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);font-size:20px;line-height:1;color:var(--ink-2);}
.drawer-close:hover{border-color:var(--primary);color:var(--primary);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  padding:14px 4px;font-size:15px;font-weight:600;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary);}
.drawer .command-search{width:100%;}

/* ============ 页头横幅 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--primary-soft);
  border-bottom:1px solid var(--border);
  padding:56px 0 60px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(29,91,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(29,91,255,.055) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),rgba(0,0,0,.15));
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),rgba(0,0,0,.15));
  pointer-events:none;
}
.page-hero-inner{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:center;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-3);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:var(--ink-2);font-weight:600;}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--ink-3);}
.crumb .current{color:var(--primary);font-weight:700;}
.hero-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--border);
  font-size:12px;font-weight:700;color:var(--secondary);letter-spacing:.02em;margin-bottom:18px;
}
.hero-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
.page-hero h1{font-size:clamp(28px,3.6vw,40px);font-weight:800;line-height:1.24;color:var(--ink);}
.page-hero .hero-sub{margin-top:16px;font-size:16.5px;color:var(--ink-2);max-width:620px;line-height:1.8;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;background:#fff;
  border:1px solid var(--border);font-size:13px;font-weight:600;color:var(--ink-2);
  transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.chip:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}
.chip .dot{width:5px;height:5px;border-radius:50%;background:var(--secondary);}
.hero-media{position:relative;}
.hero-media .media-frame{
  border-radius:var(--radius-img);overflow:hidden;background:#DCE6FA;
  border:1px solid rgba(29,91,255,.14);box-shadow:var(--shadow-2);
  aspect-ratio:4/3;
}
.hero-media .media-frame img{width:100%;height:100%;}
.hero-media::after{
  content:"";position:absolute;right:-18px;bottom:-18px;width:96px;height:96px;border-radius:50%;
  border:1px dashed rgba(29,91,255,.35);z-index:-1;
}
.hero-strip{display:flex;flex-wrap:wrap;gap:24px;margin-top:30px;padding-top:22px;border-top:1px solid rgba(29,91,255,.16);}
.hero-strip div{font-size:13.5px;color:var(--ink-2);display:flex;align-items:center;gap:8px;}
.hero-strip .mark{width:6px;height:6px;border-radius:2px;background:var(--accent);}

/* ============ 主体分栏 ============ */
.main-wrap{padding:64px 0 80px;}
.split{display:grid;grid-template-columns:236px minmax(0,1fr);gap:48px;align-items:start;}
.toc{position:sticky;top:88px;}
.toc-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-1);
}
.toc-title{font-size:13px;font-weight:800;color:var(--ink-3);letter-spacing:.06em;margin-bottom:14px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  position:relative;display:block;padding:9px 10px 9px 16px;border-radius:8px;
  font-size:14px;font-weight:600;color:var(--ink-2);
}
.toc-link::before{
  content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);
  width:2px;height:0;border-radius:2px;background:var(--primary);transition:height .2s ease;
}
.toc-link:hover{color:var(--primary);background:var(--page);}
.toc-link.is-active{color:var(--primary);background:var(--primary-soft);}
.toc-link.is-active::before{height:18px;}
.toc-hint{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);line-height:1.7;}
.toc-hint a{color:var(--primary);font-weight:700;}
.toc-hint a:hover{text-decoration:underline;}

.flow{min-width:0;}
.flow-section{
  padding:0 0 44px;margin-bottom:44px;border-bottom:1px solid var(--line);scroll-margin-top:88px;
}
.flow-section:last-of-type{border-bottom:0;margin-bottom:0;}
.sec-tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 12px;border-radius:999px;background:var(--primary-soft);
  color:var(--primary);font-size:12px;font-weight:800;letter-spacing:.03em;margin-bottom:16px;
}
.sec-tag .dot{width:5px;height:5px;border-radius:50%;background:var(--accent);}
.flow-section h2{font-size:clamp(21px,2.3vw,27px);font-weight:800;color:var(--ink);margin-bottom:18px;}
.flow-section p{font-size:16px;color:var(--ink-2);line-height:1.85;margin-bottom:16px;}
.flow-section p:last-child{margin-bottom:0;}
.lead-strong{color:var(--ink);font-weight:600;}

.figure{margin:24px 0;border-radius:var(--radius-img);overflow:hidden;background:#DCE6FA;border:1px solid var(--border);}
.figure img{width:100%;height:auto;aspect-ratio:16/9;}
.figure figcaption{font-size:13px;color:var(--ink-3);padding:10px 14px;background:#fff;border-top:1px solid var(--line);}

.check-list{display:flex;flex-direction:column;gap:2px;margin-top:20px;}
.check-list li{
  display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-2);
}
.check-list li:last-child{border-bottom:0;}
.check-list .idx{
  flex-shrink:0;width:22px;height:22px;border-radius:6px;background:var(--primary-soft);
  color:var(--primary);font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;
  margin-top:3px;
}
.check-list strong{color:var(--ink);font-weight:700;}

.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:8px 15px;border-radius:999px;
  background:#fff;border:1px solid var(--border);font-size:13.5px;font-weight:600;color:var(--ink-2);
  transition:all .18s ease;
}
.tag:hover{border-color:var(--primary);color:var(--primary);box-shadow:var(--shadow-1);transform:translateY(-1px);}
.tag .n{font-size:12px;color:var(--ink-3);font-variant-numeric:tabular-nums;}

.stats-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:26px;}
.stat-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:22px 20px;transition:transform .18s ease,box-shadow .18s ease;
}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.stat-num{font-size:30px;font-weight:800;color:var(--primary);line-height:1.1;font-variant-numeric:tabular-nums;}
.stat-num small{font-size:14px;font-weight:700;color:var(--ink-2);margin-left:4px;}
.stat-label{font-size:14px;font-weight:700;color:var(--ink);margin-top:8px;}
.stat-desc{font-size:13.5px;color:var(--ink-3);margin-top:6px;line-height:1.7;}

.steps{margin-top:22px;position:relative;}
.step{display:flex;gap:18px;padding-bottom:24px;position:relative;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:17px;top:38px;bottom:0;width:1px;background:var(--border);
}
.step:last-child::before{display:none;}
.step-num{
  flex-shrink:0;width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--border);color:var(--primary);
  font-weight:800;font-size:14px;font-variant-numeric:tabular-nums;z-index:1;
}
.step h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.step p{font-size:14.5px;color:var(--ink-2);margin:0;line-height:1.75;}

/* ============ FAQ ============ */
.faq-list{margin-top:8px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16.5px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
  font-size:16px;line-height:1;transition:transform .2s ease,background-color .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:var(--primary-soft);}
.faq-body{padding:0 0 22px;font-size:15px;color:var(--ink-2);line-height:1.85;animation:fadeIn .2s ease;}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

/* ============ CTA ============ */
.cta-section{padding:0 0 80px;}
.cta-block{
  position:relative;overflow:hidden;background:var(--primary-soft);
  border:1px solid rgba(29,91,255,.14);border-radius:20px;
  padding:56px 32px;text-align:center;
}
.cta-block::after{
  content:"";position:absolute;right:-60px;bottom:-60px;width:220px;height:220px;border-radius:50%;
  background:rgba(29,91,255,.07);pointer-events:none;
}
.cta-block::before{
  content:"";position:absolute;left:-40px;top:-40px;width:160px;height:160px;border-radius:50%;
  border:1px dashed rgba(29,91,255,.22);pointer-events:none;
}
.cta-block h2{font-size:clamp(22px,2.6vw,30px);color:var(--ink);position:relative;}
.cta-block p{margin:16px auto 28px;max-width:560px;color:var(--ink-2);font-size:16px;position:relative;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;position:relative;}

/* ============ 页脚 ============ */
.site-footer{background:#F5F7FB;border-top:1px solid var(--border);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;font-size:16px;}
.footer-brand .brand-text{font-weight:800;font-size:16px;}
.footer-about{font-size:14px;color:var(--ink-2);line-height:1.8;max-width:320px;}
.footer-contact{margin-top:18px;font-size:13.5px;color:var(--ink-3);line-height:1.9;}
.footer-contact strong{color:var(--ink-2);font-weight:700;}
.footer-title{font-size:14px;font-weight:800;color:var(--ink);margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:11px;}
.footer-list a{font-size:14px;color:var(--ink-2);}
.footer-list a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--border);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:var(--ink-3);
}

/* ============ 底部转化条 ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:55;
  background:#fff;border-top:1px solid var(--border);
  box-shadow:0 -8px 28px rgba(15,23,42,.08);
  transform:translateY(110%);transition:transform .22s ease;
}
.sticky-bar.is-visible{transform:translateY(0);}
.sticky-inner{display:flex;align-items:center;gap:16px;height:64px;}
.sticky-text{font-size:14.5px;font-weight:700;color:var(--ink);}
.sticky-text span{color:var(--ink-3);font-weight:500;margin-left:8px;}
.sticky-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.sticky-close{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--border);
  color:var(--ink-3);font-size:17px;line-height:1;display:flex;align-items:center;justify-content:center;
}
.sticky-close:hover{border-color:var(--primary);color:var(--primary);}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav-link{padding:0 10px;font-size:14px;}
  .nav-link::after{left:10px;right:10px;}
  .command-search{width:190px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .command-search{display:none;}
  .link-quiet{display:none;}
  .menu-toggle{display:flex;}
  .page-hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero-media{max-width:520px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .toc{position:static;}
  .toc-card{padding:16px;}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .toc-link{padding:8px 14px;border-radius:999px;background:var(--page);}
  .toc-link::before{display:none;}
  .main-wrap{padding:44px 0 64px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .page-hero{padding:40px 0 44px;}
  .hero-strip{gap:14px 20px;}
  .stats-row{grid-template-columns:1fr;}
  .flow-section{padding-bottom:36px;margin-bottom:36px;}
  .cta-block{padding:40px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .sticky-inner{height:auto;padding:12px 0;flex-wrap:wrap;}
  .sticky-text{font-size:14px;}
  .sticky-text span{display:none;}
  .sticky-actions{margin-left:0;width:100%;}
  .sticky-actions .btn{flex:1;}
}
@media (max-width:519px){
  .brand-text{font-size:15px;}
  .hero-chips{gap:8px;}
  .chip{font-size:12.5px;padding:6px 12px;}
  .btn{height:44px;padding:0 16px;font-size:14.5px;}
  .flow-section p{font-size:15.5px;}
}

/* roulang page: article */
:root{
  --primary:#1D5BFF;
  --primary-dark:#164BD6;
  --accent:#12B5A5;
  --warm:#FF7A2F;
  --page-bg:#F6F8FC;
  --soft:#EEF3FF;
  --card:#FFFFFF;
  --border:#E6EAF2;
  --text:#0F172A;
  --text-2:#475569;
  --text-3:#94A3B8;
  --success:#16A34A;
  --divider:#EDF0F5;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(15,23,42,.04);
  --sh-2:0 8px 24px rgba(15,23,42,.06);
  --sh-3:0 16px 40px rgba(29,91,255,.14);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--page-bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:800;letter-spacing:0;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;min-height:44px}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;display:grid;place-items:center;font-size:15px;font-weight:800;
}
.brand-text{font-size:16px;font-weight:800;color:var(--text);white-space:nowrap}
.nav-links{display:none;align-items:center;gap:2px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;padding:0 12px;
  font-size:14.5px;color:var(--text-2);transition:color .18s ease;
}
.nav-link:hover{color:var(--primary)}
.nav-link.is-active{color:var(--primary);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--primary);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.search-box{
  display:none;align-items:center;gap:8px;width:230px;height:38px;padding:0 12px;
  border:1px solid var(--border);border-radius:var(--r-btn);background:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(29,91,255,.12)}
.search-box svg{flex-shrink:0;color:var(--text-3)}
.search-box input{border:0;outline:0;background:transparent;width:100%;font-size:13.5px;color:var(--text)}
.search-box input::placeholder{color:var(--text-3)}
.kbd{
  font-size:11px;color:var(--text-3);border:1px solid var(--border);border-radius:6px;
  padding:1px 5px;background:#F8FAFF;font-variant-numeric:tabular-nums;flex-shrink:0;
}
.quick-link{display:none;font-size:14px;color:var(--text-2);padding:8px 6px;transition:color .18s ease}
.quick-link:hover{color:var(--primary)}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--border);
  background:#fff;color:var(--text-2);transition:border-color .18s ease,color .18s ease;
}
.menu-toggle:hover{border-color:var(--primary);color:var(--primary)}
@media (min-width:1024px){
  .nav-links{display:flex}
  .search-box{display:flex}
  .quick-link{display:inline-flex}
  .menu-toggle{display:none}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:40px;padding:0 18px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--sh-3);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border:1px solid var(--primary);color:var(--primary);background:#fff}
.btn-outline:hover{background:var(--soft)}
.btn-ghost{color:var(--primary);padding:0 2px;height:auto;font-weight:600}
.btn-ghost .arrow{transition:transform .18s ease}
.btn-ghost:hover .arrow{transform:translateX(2px)}
.btn-lg{height:48px;padding:0 26px;font-size:15.5px}
@media (max-width:1023px){.btn-cta{min-height:44px}}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:80;visibility:hidden;pointer-events:none}
.drawer.is-open{visibility:visible;pointer-events:auto}
.drawer-mask{position:absolute;inset:0;background:rgba(15,23,42,.42);opacity:0;transition:opacity .22s ease}
.drawer.is-open .drawer-mask{opacity:1}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:300px;max-width:86vw;background:#fff;
  padding:22px 20px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;
  transform:translateX(100%);transition:transform .24s ease;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-title{font-size:15px;font-weight:800}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);display:grid;place-items:center;color:var(--text-2)}
.drawer-link{
  display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:10px;
  font-size:15px;color:var(--text-2);border-bottom:1px solid var(--divider);
  transition:background-color .18s ease,color .18s ease;
}
.drawer-link:hover{background:var(--page-bg);color:var(--primary)}
.drawer-link.is-active{color:var(--primary);font-weight:700;background:var(--soft)}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;border:1px solid var(--border);border-radius:10px;background:#fff;margin:16px 0}
.drawer-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px}

/* ---------- article hero ---------- */
.article-hero{position:relative;background:#fff;border-bottom:1px solid var(--border);overflow:hidden}
.article-hero::before{
  content:"";position:absolute;right:-90px;top:-110px;width:320px;height:320px;
  border-radius:50%;border:1px solid var(--border);
}
.article-hero::after{
  content:"";position:absolute;right:60px;top:40px;width:96px;height:96px;
  border-radius:24px;background:var(--soft);transform:rotate(12deg);
}
.hero-inner{position:relative;z-index:2;padding:26px 0 40px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3)}
.breadcrumb a{color:var(--text-2);transition:color .18s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#CBD5E1}
.breadcrumb .current{color:var(--text-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--soft);color:var(--primary);
}
.pill-dot{width:6px;height:6px;border-radius:50%;background:var(--warm)}
.article-title{
  margin-top:18px;font-size:clamp(26px,3.6vw,38px);line-height:1.28;font-weight:800;
  max-width:880px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin-top:16px;font-size:14px;color:var(--text-3);
}
.article-meta .dot{color:#CBD5E1}
.hero-cover{
  position:relative;z-index:2;margin-top:26px;border-radius:var(--r-img);overflow:hidden;
  background:var(--soft);box-shadow:var(--sh-2);
}
.hero-cover img{width:100%;height:260px;object-fit:cover}
@media (min-width:768px){.hero-cover img{height:320px}}

/* ---------- article layout ---------- */
.article-wrap{padding:44px 0 64px}
.article-layout{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 250px;gap:56px}
}
.article-main{min-height:420px}
.article-body{max-width:760px;font-size:16.5px;line-height:1.8;color:#1E293B}
.article-body p{margin:0 0 1.5em}
.article-body h2{
  font-size:clamp(21px,2.4vw,26px);margin:48px 0 16px;padding-left:16px;
  border-left:4px solid var(--primary);line-height:1.35;scroll-margin-top:88px;
}
.article-body h3{font-size:19px;margin:32px 0 12px;scroll-margin-top:88px}
.article-body h4{font-size:17px;margin:26px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.5em}
.article-body li{position:relative;padding-left:22px;margin-bottom:8px;line-height:1.8}
.article-body ul>li::before{
  content:"";position:absolute;left:4px;top:.68em;width:6px;height:6px;
  border-radius:50%;background:var(--primary);
}
.article-body ol{counter-reset:olist}
.article-body ol>li{counter-increment:olist;padding-left:26px}
.article-body ol>li::before{
  content:counter(olist);position:absolute;left:0;top:0;color:var(--primary);font-weight:700;
}
.article-body blockquote{
  margin:0 0 1.5em;padding:16px 20px;background:var(--soft);
  border-left:4px solid var(--primary);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--text-2);
}
.article-body img{border-radius:var(--r-img);margin:24px auto;box-shadow:var(--sh-2);height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13.5px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(29,91,255,.35)}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.5em;font-size:15px;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 14px;text-align:left;white-space:nowrap}
.article-body th{background:var(--soft);font-weight:700}
.article-body hr{border:0;border-top:1px solid var(--divider);margin:36px 0}
.article-body strong{font-weight:700;color:var(--text)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:300px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  color:var(--text-3);text-align:center;padding:32px 20px;
}
.empty-state p{font-size:15px;color:var(--text-2)}

/* ---------- toc ---------- */
.article-aside{display:none}
@media (min-width:1024px){.article-aside{display:block}}
.toc-card{
  position:sticky;top:88px;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
}
.toc-title{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700;margin-bottom:12px}
.toc-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--primary)}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:62vh;overflow-y:auto}
.toc-item{
  display:block;font-size:13.5px;color:var(--text-2);line-height:1.5;
  padding:7px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:color .18s ease,background-color .18s ease,border-color .18s ease;
}
.toc-item:hover{color:var(--primary);background:var(--page-bg)}
.toc-item.is-current{color:var(--primary);border-left-color:var(--primary);background:var(--soft);font-weight:600}
.toc-item.depth-3{padding-left:22px;font-size:13px}
.toc-empty{font-size:13px;color:var(--text-3);padding:4px 0}

/* ---------- actions bar ---------- */
.article-actions{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  border-top:1px solid var(--divider);border-bottom:1px solid var(--divider);
  padding:16px 0;margin:40px 0;
}
.action-btn{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);
  padding:9px 14px;border-radius:var(--r-btn);border:1px solid var(--border);background:#fff;
  min-height:44px;transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.action-btn:hover{color:var(--primary);border-color:var(--primary);background:var(--soft)}
.action-btn svg{width:20px;height:20px}

/* ---------- post nav ---------- */
.post-nav{display:grid;grid-template-columns:1fr;gap:16px;margin-bottom:52px}
@media (min-width:768px){.post-nav{grid-template-columns:1fr 1fr}}
.post-nav a{
  display:block;padding:20px 22px;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-nav a:hover{background:var(--soft);border-color:#CBDBFF;transform:translateY(-2px);box-shadow:var(--sh-2)}
.post-nav .dir{font-size:12.5px;color:var(--text-3);margin-bottom:6px;letter-spacing:.04em}
.post-nav .ttl{
  font-size:15.5px;font-weight:700;color:var(--text);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* ---------- related ---------- */
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:22px}
.section-head h2{font-size:22px;font-weight:800}
.section-head .more{font-size:14px;color:var(--primary);font-weight:600}
.section-head .more:hover{color:var(--primary-dark)}
.related{margin-bottom:56px}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.r-card{
  display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.r-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3)}
.r-thumb{position:relative;background:var(--soft);aspect-ratio:16/10;overflow:hidden}
.r-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease}
.r-card:hover .r-thumb img{transform:scale(1.03)}
.r-tag{
  position:absolute;left:12px;top:12px;padding:3px 10px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--primary);font-size:12px;font-weight:600;
}
.r-body{padding:16px 18px 20px}
.r-meta{font-size:12.5px;color:var(--text-3);margin-bottom:8px}
.r-title{
  font-size:15.5px;font-weight:700;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.r-card:hover .r-title{color:var(--primary)}
.related-empty{
  display:flex;align-items:center;gap:10px;background:#fff;border:1px dashed var(--border);
  border-radius:var(--r-card);padding:20px 22px;color:var(--text-3);font-size:14px;
}

/* ---------- back list ---------- */
.back-list{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:18px 22px;box-shadow:var(--sh-1);
}
.back-list .tip{font-size:14px;color:var(--text-2)}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--soft);border-radius:20px;
  padding:48px 24px;text-align:center;margin:0 0 72px;
}
.cta-band h2{font-size:clamp(21px,2.6vw,28px);line-height:1.35}
.cta-band p{margin-top:12px;font-size:15px;color:var(--text-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:26px}
.cta-deco{
  position:absolute;right:-40px;bottom:-40px;width:170px;height:170px;border-radius:50%;
  border:1px solid rgba(29,91,255,.22);background:rgba(255,255,255,.4);
}
.cta-deco::before{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:90px;height:90px;border-radius:50%;border:1px dashed rgba(29,91,255,.28);
}

/* ---------- footer ---------- */
.site-footer{background:#F5F7FB;border-top:1px solid var(--border);padding:56px 0 24px;transition:padding-bottom .2s ease}
body.has-float .site-footer{padding-bottom:96px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-about{font-size:14px;color:var(--text-2);line-height:1.75;max-width:320px}
.footer-contact{margin-top:16px;font-size:14px;color:var(--text-2);line-height:1.9}
.footer-contact strong{color:var(--text);font-weight:600}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:14px}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{font-size:14px;color:var(--text-2);transition:color .18s ease}
.footer-list a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--border);margin-top:40px;padding-top:20px;
  font-size:13px;color:var(--text-3);
}

/* ---------- float bar ---------- */
.float-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;
  box-shadow:0 -6px 20px rgba(15,23,42,.10);
  transform:translateY(110%);transition:transform .24s ease;
}
.float-bar.is-show{transform:translateY(0)}
.float-inner{display:flex;align-items:center;gap:12px;min-height:64px;padding:10px 0}
.float-tip{font-size:14px;color:var(--text-2);flex:1;min-width:0}
.float-close{
  width:44px;height:44px;border-radius:10px;display:grid;place-items:center;
  color:var(--text-3);transition:background-color .18s ease,color .18s ease;
}
.float-close:hover{background:var(--page-bg);color:var(--text-2)}
@media (max-width:639px){
  .float-tip{font-size:13px}
  .article-wrap{padding:32px 0 48px}
}

/* roulang page: category2 */
:root{
    --primary:#1D5BFF;
    --primary-dark:#164BD6;
    --accent:#12B5A5;
    --warm:#FF7A2F;
    --page:#F6F8FC;
    --soft:#EEF3FF;
    --card:#FFFFFF;
    --line:#E6EAF2;
    --divider:#EDF0F5;
    --text:#0F172A;
    --text-2:#475569;
    --text-3:#94A3B8;
    --success:#16A34A;
    --r-card:16px;
    --r-btn:10px;
    --r-img:12px;
    --sh-1:0 1px 2px rgba(15,23,42,.04);
    --sh-2:0 8px 24px rgba(15,23,42,.06);
    --sh-3:0 16px 40px rgba(29,91,255,.14);
    --sec-y:48px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    background:var(--page);
    color:var(--text);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  button{background:none;border:0;cursor:pointer}
  h1,h2,h3,h4,p,ul,ol{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media(min-width:768px){.container{padding:0 32px}}
  @media(min-width:1280px){:root{--sec-y:96px}}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.88);
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;gap:18px;height:64px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{
    width:34px;height:34px;border-radius:10px;flex-shrink:0;
    display:grid;place-items:center;
    background:linear-gradient(135deg,var(--primary),var(--accent));
    color:#fff;font-size:16px;font-weight:800;line-height:1;
    box-shadow:0 6px 14px rgba(29,91,255,.26);
  }
  .brand-text{font-size:16px;font-weight:800;letter-spacing:.2px;white-space:nowrap}
  .nav-links{display:flex;align-items:center;gap:2px;margin-left:10px}
  .nav-link{
    position:relative;display:inline-block;
    padding:8px 12px;border-radius:8px;
    font-size:15px;color:var(--text-2);
    transition:color .2s,background-color .2s;
    white-space:nowrap;
  }
  .nav-link:hover{color:var(--primary);background:var(--soft)}
  .nav-link.is-active{color:var(--primary);font-weight:700}
  .nav-link.is-active::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;
    height:2px;border-radius:2px;background:var(--primary);
  }
  .header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
  .command-search{
    display:flex;align-items:center;gap:8px;
    width:232px;height:38px;padding:0 10px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
    transition:border-color .2s,box-shadow .2s;
  }
  .command-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(29,91,255,.12)}
  .command-search i{color:var(--text-3);font-size:13px}
  .command-search input{
    flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;
  }
  .command-search input::placeholder{color:var(--text-3)}
  .kbd{
    font-size:11px;color:var(--text-3);line-height:1;
    padding:4px 6px;border:1px solid var(--line);border-radius:6px;background:var(--page);
  }
  .ghost-link{font-size:14px;color:var(--text-2);transition:color .2s}
  .ghost-link:hover{color:var(--primary)}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--r-btn);font-weight:600;
    transition:transform .2s,box-shadow .2s,background-color .2s,color .2s,border-color .2s;
    white-space:nowrap;
  }
  .btn-primary{
    background:var(--primary);color:#fff;padding:0 20px;height:40px;font-size:15px;
    box-shadow:0 6px 16px rgba(29,91,255,.22);
  }
  .btn-primary:hover{background:var(--primary-dark);box-shadow:0 12px 26px rgba(29,91,255,.3);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(0)}
  .btn-outline{
    border:1px solid var(--primary);color:var(--primary);
    padding:0 20px;height:40px;font-size:15px;background:#fff;
  }
  .btn-outline:hover{background:var(--soft)}
  .btn-ghost{color:var(--primary);font-size:15px;height:40px;padding:0 4px}
  .btn-ghost i{transition:transform .2s}
  .btn-ghost:hover i{transform:translateX(3px)}
  .btn-lg{height:48px;padding:0 26px;font-size:16px}
  .hamburger{
    display:none;width:44px;height:44px;border-radius:var(--r-btn);
    align-items:center;justify-content:center;color:var(--text);font-size:18px;
    border:1px solid var(--line);background:#fff;
  }
  @media(max-width:1023px){
    .nav-links,.command-search,.ghost-link{display:none}
    .hamburger{display:inline-flex}
    .brand-text{font-size:15px}
  }
  @media(max-width:480px){
    .header-actions .btn-primary{padding:0 14px;font-size:14px}
    .brand-text{max-width:150px;overflow:hidden;text-overflow:ellipsis}
  }

  /* 抽屉 */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(15,23,42,.42);
    opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s;z-index:70;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;
    background:#fff;z-index:80;padding:20px;
    transform:translateX(102%);transition:transform .25s ease;
    box-shadow:-16px 0 40px rgba(15,23,42,.12);
    display:flex;flex-direction:column;gap:14px;overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
  .drawer-close{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;border:1px solid var(--line)}
  .drawer-link{
    display:block;padding:12px 14px;border-radius:10px;font-size:15px;color:var(--text-2);
    border:1px solid transparent;transition:background-color .2s,color .2s;
  }
  .drawer-link:hover{background:var(--soft);color:var(--primary)}
  .drawer-link.is-active{background:var(--soft);color:var(--primary);font-weight:700}
  .drawer-search{
    display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;
    border:1px solid var(--line);border-radius:10px;background:var(--page);
  }
  .drawer-search input{flex:1;border:0;background:transparent;outline:none;font-size:14px}

  /* ---------- 页头 ---------- */
  .page-hero{
    position:relative;overflow:hidden;
    background:var(--soft);
    border-bottom:1px solid var(--line);
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(29,91,255,.06) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(29,91,255,.06) 1px,transparent 1px);
    background-size:44px 44px;
    mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
    -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
    pointer-events:none;
  }
  .page-hero::after{
    content:"";position:absolute;right:-90px;top:-110px;width:340px;height:340px;border-radius:50%;
    border:1px solid rgba(29,91,255,.18);pointer-events:none;
  }
  .page-hero-inner{
    position:relative;z-index:1;
    display:grid;grid-template-columns:1fr;gap:28px;
    padding:38px 0 42px;
  }
  @media(min-width:1024px){
    .page-hero-inner{grid-template-columns:1.12fr .88fr;gap:48px;padding:52px 0 56px;align-items:center}
  }
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:14px}
  .breadcrumb a{color:var(--text-2);transition:color .2s}
  .breadcrumb a:hover{color:var(--primary)}
  .breadcrumb span.sep{color:#C3CBD8}
  .pill{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;
    background:#fff;color:var(--primary);border:1px solid rgba(29,91,255,.24);
  }
  .pill-warm{background:rgba(255,122,47,.1);color:#D2571A;border-color:rgba(255,122,47,.28)}
  .pill-teal{background:rgba(18,181,165,.1);color:#0C8C80;border-color:rgba(18,181,165,.28)}
  h1.hero-title{
    font-size:clamp(30px,4vw,42px);font-weight:800;line-height:1.2;letter-spacing:-.2px;
    margin:14px 0 14px;
  }
  .hero-sub{font-size:16px;color:var(--text-2);max-width:56ch;line-height:1.8}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
  .hero-figure{
    position:relative;border-radius:var(--r-card);overflow:hidden;
    background:#DDE6FA;border:1px solid rgba(255,255,255,.9);
    box-shadow:var(--sh-2);
  }
  .hero-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
  .hero-badge-float{
    position:absolute;left:16px;bottom:16px;
    background:rgba(255,255,255,.94);border-radius:12px;padding:10px 14px;
    box-shadow:var(--sh-2);font-size:13px;color:var(--text-2);
    display:flex;align-items:center;gap:8px;
  }
  .dot-live{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 0 3px rgba(22,163,74,.16)}

  /* ---------- 通用区块 ---------- */
  section.block{padding:var(--sec-y) 0}
  .sec-head{margin-bottom:28px;max-width:720px}
  .sec-head h2{font-size:clamp(22px,2.6vw,28px);font-weight:800;line-height:1.3;margin-top:12px}
  .sec-head p{margin-top:12px;color:var(--text-2);font-size:15px}
  .tag{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12px;font-weight:700;color:var(--primary);
    background:var(--soft);border-radius:999px;padding:5px 12px;
  }

  /* 导读两列 */
  .lead-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
  @media(min-width:1024px){.lead-grid{grid-template-columns:1.05fr .95fr;gap:56px}}
  .lead-list{margin-top:20px;display:grid;gap:12px}
  .lead-list li{
    display:flex;gap:12px;align-items:flex-start;
    background:#fff;border:1px solid var(--line);border-radius:12px;
    padding:14px 16px;box-shadow:var(--sh-1);
  }
  .lead-list i{color:var(--accent);margin-top:4px;font-size:14px}
  .lead-list strong{display:block;font-size:15px;font-weight:700}
  .lead-list span{font-size:13px;color:var(--text-2);line-height:1.7}
  .frame{
    border-radius:var(--r-card);overflow:hidden;background:#DDE6FA;
    border:1px solid var(--line);box-shadow:var(--sh-2);
  }
  .frame img{width:100%;height:100%;object-fit:cover}
  .frame-cap{
    display:flex;align-items:center;gap:8px;justify-content:space-between;
    padding:12px 16px;background:#fff;border-top:1px solid var(--line);
    font-size:13px;color:var(--text-3);
  }

  /* 交替图文 */
  .zig{display:grid;grid-template-columns:1fr;gap:26px;align-items:center}
  @media(min-width:1024px){
    .zig{grid-template-columns:1fr 1fr;gap:60px}
    .zig.reverse .zig-media{order:2}
    .zig.reverse .zig-text{order:1}
  }
  .zig + .zig{margin-top:56px}
  @media(min-width:1024px){.zig + .zig{margin-top:72px}}
  .zig-text h3{font-size:clamp(20px,2.2vw,24px);font-weight:800;line-height:1.35;margin:12px 0 14px}
  .zig-text p{color:var(--text-2);font-size:15.5px;margin-bottom:14px}
  .mini-list{margin-top:6px;display:grid;gap:8px}
  .mini-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-2)}
  .mini-list li::before{
    content:"";position:absolute;left:4px;top:11px;width:6px;height:6px;border-radius:50%;
    background:var(--primary);
  }
  .zig-media{position:relative}
  .zig-media .frame img{aspect-ratio:4/3}
  .zig-index{
    position:absolute;left:-10px;top:-12px;z-index:2;
    width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
    background:#fff;border:1px solid var(--line);box-shadow:var(--sh-2);
    font-weight:800;color:var(--primary);font-size:15px;
  }

  /* 流程条 */
  .flow-wrap{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .flow{display:grid;gap:18px;grid-template-columns:1fr}
  @media(min-width:640px){.flow{grid-template-columns:repeat(2,1fr)}}
  @media(min-width:1024px){.flow{grid-template-columns:repeat(5,1fr);gap:0}}
  .flow-step{position:relative;padding:18px 18px 18px 0}
  @media(min-width:1024px){.flow-step{padding:20px 22px 20px 0}}
  .flow-step::after{
    content:"";position:absolute;left:0;right:22px;bottom:0;height:1px;background:var(--divider);
  }
  @media(min-width:1024px){
    .flow-step::after{left:auto;right:0;top:0;bottom:auto;width:1px;height:100%;background:var(--divider)}
    .flow-step:last-child::after{display:none}
  }
  .flow-num{
    width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
    background:var(--soft);color:var(--primary);font-weight:800;font-size:14px;
    border:1px solid rgba(29,91,255,.2);margin-bottom:12px;
  }
  .flow-step h4{font-size:16px;font-weight:700;margin-bottom:6px}
  .flow-step p{font-size:13.5px;color:var(--text-2);line-height:1.7}

  /* 宽幅信息卡 */
  .wide-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--sh-2);overflow:hidden;
  }
  .wide-card-head{
    display:grid;gap:18px;padding:26px 24px;border-bottom:1px solid var(--divider);
    background:linear-gradient(180deg,#FFFFFF,#FBFCFE);
  }
  @media(min-width:1024px){
    .wide-card-head{grid-template-columns:1.1fr .9fr;align-items:center;padding:32px 36px;gap:40px}
  }
  .wide-card-head h2{font-size:clamp(21px,2.4vw,26px);font-weight:800;line-height:1.35}
  .wide-card-head p{color:var(--text-2);font-size:15px;margin-top:10px}
  .wide-card-body{display:grid;gap:0;grid-template-columns:1fr}
  @media(min-width:768px){.wide-card-body{grid-template-columns:repeat(2,1fr)}}
  .wide-item{padding:20px 24px;border-bottom:1px solid var(--divider);display:flex;gap:12px;align-items:flex-start}
  @media(min-width:768px){
    .wide-item:nth-child(odd){border-right:1px solid var(--divider)}
  }
  .wide-item i{color:var(--warm);margin-top:4px;font-size:14px}
  .wide-item strong{display:block;font-size:15px;font-weight:700;margin-bottom:4px}
  .wide-item span{font-size:14px;color:var(--text-2);line-height:1.7}

  /* FAQ */
  .faq-grid{display:grid;grid-template-columns:1fr;gap:28px}
  @media(min-width:1024px){.faq-grid{grid-template-columns:.78fr 1.22fr;gap:56px;align-items:start}}
  .faq-item{border-bottom:1px solid var(--divider)}
  .faq-item:first-child{border-top:1px solid var(--divider)}
  .faq-btn{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 4px;text-align:left;font-size:16px;font-weight:700;color:var(--text);
    transition:color .2s,background-color .2s;
  }
  .faq-btn:hover{color:var(--primary);background:var(--page)}
  .faq-icon{
    flex-shrink:0;width:26px;height:26px;border-radius:50%;
    display:grid;place-items:center;border:1px solid var(--line);color:var(--primary);
    font-size:13px;transition:transform .2s,background-color .2s;
  }
  .faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--soft)}
  .faq-panel{
    max-height:0;overflow:hidden;opacity:0;
    transition:max-height .22s ease,opacity .2s ease;
  }
  .faq-item.is-open .faq-panel{max-height:320px;opacity:1}
  .faq-panel p{padding:0 4px 20px;font-size:14.5px;color:var(--text-2);line-height:1.8;max-width:60ch}

  /* CTA */
  .cta-band{
    position:relative;overflow:hidden;background:var(--soft);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  }
  .cta-inner{position:relative;z-index:1;text-align:center;padding:var(--sec-y) 0;max-width:720px;margin:0 auto}
  .cta-inner h2{font-size:clamp(22px,2.8vw,30px);font-weight:800;line-height:1.3}
  .cta-inner p{margin-top:14px;color:var(--text-2);font-size:15.5px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:26px}
  .cta-deco{
    position:absolute;right:-60px;bottom:-80px;width:260px;height:260px;border-radius:50%;
    background:radial-gradient(circle at 30% 30%,rgba(29,91,255,.16),rgba(29,91,255,0) 70%);
    pointer-events:none;
  }
  .cta-deco-2{
    position:absolute;left:-40px;top:-60px;width:180px;height:180px;border-radius:50%;
    border:1px solid rgba(18,181,165,.28);pointer-events:none;
  }

  /* 页脚 */
  .site-footer{background:#F5F7FB;border-top:1px solid var(--line);padding:56px 0 0;margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
  @media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .footer-about{font-size:14px;color:var(--text-2);max-width:34ch;line-height:1.75}
  .footer-contact{margin-top:16px;font-size:13.5px;color:var(--text-2);line-height:1.9}
  .footer-contact strong{color:var(--text);font-weight:600}
  .footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:14px}
  .footer-list{display:grid;gap:10px}
  .footer-list a{font-size:14px;color:var(--text-2);transition:color .2s}
  .footer-list a:hover{color:var(--primary)}
  .footer-bottom{
    margin-top:40px;padding:18px 0 22px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:var(--text-3);
  }

  /* 底部转化条 */
  .convert-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:60;
    height:64px;background:#fff;box-shadow:0 -10px 30px rgba(15,23,42,.1);
    display:flex;align-items:center;gap:14px;padding:0 16px;
    transform:translateY(110%);transition:transform .25s ease;
  }
  .convert-bar.is-visible{transform:translateY(0)}
  .convert-bar .cb-text{font-size:14px;color:var(--text-2);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .convert-bar .cb-close{
    width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
    color:var(--text-3);border:1px solid var(--line);transition:color .2s,background-color .2s;
  }
  .convert-bar .cb-close:hover{color:var(--text);background:var(--page)}
  body.bar-open{padding-bottom:64px}
  @media(max-width:640px){
    .convert-bar{gap:10px;padding:0 12px}
    .convert-bar .cb-text{font-size:13px}
  }