/* roulang page: index */
:root{
  --brand-50:#F5F0FF; --brand-100:#EDE4FF; --brand-300:#B79BF5; --brand-500:#7C3AED; --brand-600:#6D28D9; --brand-800:#4C1D95;
  --accent-400:#FF9A6B; --accent-500:#FF7A45; --accent-600:#F2603A;
  --mint:#34D399; --sand:#FFD166;
  --ink:#1B1430; --ink-2:#5B5470; --ink-3:#8B849E;
  --line:#E8E2F2; --bg:#FBF8F3; --bg-soft:#F3EEFB; --white:#FFFFFF;
  --grad:linear-gradient(135deg,#6D28D9 0%,#A855F7 45%,#FF7A45 100%);
  --shadow-s:0 1px 2px rgba(27,20,48,.05);
  --shadow-m:0 10px 28px -14px rgba(109,40,217,.22);
  --shadow-l:0 22px 48px -22px rgba(109,40,217,.32);
  --r-s:10px; --r-m:16px; --r-l:24px; --r-xl:32px; --r-full:999px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--ink-2);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px; line-height:1.8; -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block; border:0}
a{color:var(--brand-600); text-decoration:none; text-underline-offset:3px; transition:color .2s ease}
a:hover{color:var(--accent-500)}
button,input,select,textarea{font:inherit; color:inherit}
button{cursor:pointer; border:0; background:none}
h1,h2,h3,h4{margin:0; color:var(--ink); font-weight:700; line-height:1.3; letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0; padding:0; list-style:none}
:focus-visible{outline:2px solid var(--brand-500); outline-offset:2px; border-radius:6px}

/* ---------- 布局骨架 ---------- */
.sidebar{
  position:fixed; inset:0 auto 0 0; width:240px; height:100vh; z-index:60;
  background:var(--white); border-right:1px solid var(--line);
  display:flex; flex-direction:column; overflow-y:auto; padding-bottom:16px;
}
.sidebar::before{content:""; position:absolute; top:0; left:0; right:0; height:3px; background:var(--grad)}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(139,132,158,.4); border-radius:999px}
.main-wrap{margin-left:240px; position:relative; display:flex; flex-direction:column; min-height:100vh}
.main-wrap::before{content:""; display:block; height:3px; background:var(--grad); width:100%}
.container-main{width:100%; max-width:1120px; margin:0 auto; padding:0 40px}

/* ---------- 品牌标志 ---------- */
.brand{display:flex; align-items:center; gap:10px; color:var(--ink); text-decoration:none}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:38px; height:38px; border-radius:12px; background:var(--grad); color:#fff;
  display:grid; place-items:center; font-size:17px; font-weight:800; flex:0 0 auto;
  box-shadow:var(--shadow-m);
}
.brand-text{display:flex; flex-direction:column; line-height:1.15; font-weight:800; font-size:16px; letter-spacing:-.01em}
.brand-sub{font-size:11px; font-weight:500; color:var(--ink-3); letter-spacing:.04em; margin-top:3px}

/* ---------- 侧栏内容 ---------- */
.sidebar-brand{height:88px; display:flex; align-items:center; padding:0 20px; flex:0 0 auto}
.side-nav{display:flex; flex-direction:column; gap:4px; padding:8px 14px; flex:1 1 auto}
.nav-item{
  position:relative; display:flex; align-items:center; gap:10px; height:44px; padding:0 12px;
  border-radius:12px; color:var(--ink-2); font-size:15px; font-weight:500; transition:background .2s,color .2s;
}
.nav-item i{font-style:normal; width:18px; text-align:center; font-size:15px; opacity:.75}
.nav-item:hover{background:var(--bg-soft); color:var(--brand-600)}
.nav-item.is-active{background:var(--bg-soft); color:var(--brand-600); font-weight:600}
.nav-item.is-active::before{
  content:""; position:absolute; left:0; top:9px; bottom:9px; width:3px; border-radius:999px; background:var(--grad);
}
.side-sub{margin:12px 14px 0; padding:16px; border-radius:var(--r-m); background:linear-gradient(150deg,var(--brand-50),#FFF6F0); border:1px solid var(--line)}
.side-sub p{font-size:12.5px; line-height:1.7; color:var(--ink-2); margin-bottom:10px}
.btn-mini{display:block; text-align:center; height:36px; line-height:36px; border-radius:10px; background:var(--grad); color:#fff; font-size:13px; font-weight:600; box-shadow:var(--shadow-s)}
.btn-mini:hover{color:#fff; filter:brightness(1.05); transform:translateY(-1px)}
.side-copy{margin:16px 20px 0; font-size:11px; color:var(--ink-3); line-height:1.6}

/* ---------- 移动顶栏与抽屉 ---------- */
.topbar{
  display:none; position:sticky; top:0; z-index:70; height:56px; align-items:center; justify-content:space-between;
  padding:0 16px; background:rgba(255,255,255,.96); backdrop-filter:blur(8px); border-bottom:1px solid transparent;
  transition:border-color .2s, box-shadow .2s;
}
.topbar.is-scrolled{border-bottom-color:var(--line); box-shadow:var(--shadow-s)}
.hamburger{width:44px; height:44px; display:grid; place-items:center; border-radius:12px; background:var(--bg-soft); color:var(--brand-600)}
.hamburger span{display:block; width:18px; height:2px; background:currentColor; border-radius:2px; position:relative}
.hamburger span::before,.hamburger span::after{content:""; position:absolute; left:0; width:18px; height:2px; background:currentColor; border-radius:2px}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.drawer-mask{position:fixed; inset:0; background:rgba(27,20,48,.45); opacity:0; pointer-events:none; transition:opacity .24s ease; z-index:80}
.drawer-mask.is-open{opacity:1; pointer-events:auto}
.drawer{
  position:fixed; top:0; left:0; bottom:0; width:280px; max-width:86vw; background:var(--white); z-index:90;
  transform:translateX(-100%); transition:transform .24s ease-out; display:flex; flex-direction:column;
  box-shadow:var(--shadow-l); overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex; align-items:center; justify-content:space-between; padding:16px; border-bottom:1px solid var(--line)}
.drawer-close{width:44px; height:44px; display:grid; place-items:center; border-radius:12px; color:var(--ink-2); font-size:20px}
.drawer-close:hover{background:var(--bg-soft); color:var(--brand-600)}
.drawer .side-nav{padding:12px 14px}

/* ---------- 通用 ---------- */
.section{padding:80px 0}
.section-tight{padding:56px 0}
.eyebrow{display:inline-flex; align-items:center; gap:8px; height:26px; padding:0 12px; border-radius:var(--r-full); background:var(--bg-soft); color:var(--brand-600); font-size:12px; font-weight:600; letter-spacing:.02em}
.h2{font-size:30px; font-weight:800; letter-spacing:-.02em; line-height:1.3}
.h2-bar{width:40px; height:4px; border-radius:999px; background:var(--grad); margin-bottom:12px}
.lead{font-size:16.5px; line-height:1.9; color:var(--ink-2); max-width:70ch}
.muted{color:var(--ink-3); font-size:13.5px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px; height:48px; padding:0 24px;
  border-radius:var(--r-m); font-size:15px; font-weight:600; transition:transform .2s, box-shadow .2s, background .2s, color .2s, border-color .2s;
  border:1px solid transparent; white-space:nowrap;
}
.btn-primary{background:var(--grad); color:#fff; box-shadow:var(--shadow-m)}
.btn-primary:hover{color:#fff; transform:translateY(-1px); box-shadow:var(--shadow-l); filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0); box-shadow:var(--shadow-s)}
.btn-ghost{background:#fff; color:var(--ink); border-color:var(--line); box-shadow:var(--shadow-s)}
.btn-ghost:hover{color:var(--brand-600); border-color:var(--brand-500); background:var(--bg-soft); transform:translateY(-1px)}
.btn:disabled,.btn[disabled]{opacity:.4; cursor:not-allowed; transform:none}
.link-arrow{display:inline-flex; align-items:center; gap:6px; color:var(--brand-600); font-weight:600; font-size:14.5px}
.link-arrow svg{transition:transform .2s}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{position:relative; overflow:hidden; border-radius:var(--r-xl); padding:56px; color:#fff;
  background:var(--grad); box-shadow:var(--shadow-l);
}
.hero::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.12) 1px,transparent 1px);
  background-size:32px 32px;
}
.hero-grid{position:relative; display:grid; grid-template-columns:7fr 5fr; gap:40px; align-items:center}
.hero h1{color:#fff; font-size:44px; font-weight:800; line-height:1.2; letter-spacing:-.02em; margin:16px 0 18px}
.hero .hero-sub{font-size:16.5px; line-height:1.85; color:rgba(255,255,255,.9); max-width:56ch}
.hero .eyebrow{background:rgba(255,255,255,.18); color:#fff; backdrop-filter:blur(4px)}
.hero-actions{display:flex; flex-wrap:wrap; gap:14px; margin-top:28px}
.hero .btn-ghost{background:rgba(255,255,255,.14); border-color:rgba(255,255,255,.5); color:#fff}
.hero .btn-ghost:hover{background:#fff; color:var(--brand-600); border-color:#fff}
.hero-tags{display:flex; flex-wrap:wrap; gap:8px; margin-top:26px}
.hero-tags span{font-size:12.5px; padding:5px 12px; border-radius:var(--r-full); background:rgba(255,255,255,.16); color:#fff; border:1px solid rgba(255,255,255,.22)}
.hero-visual{position:relative}
.hero-shot{border-radius:var(--r-l); overflow:hidden; border:8px solid rgba(255,255,255,.92); box-shadow:var(--shadow-l); aspect-ratio:16/10}
.hero-shot img{width:100%; height:100%; object-fit:cover}
.hero-float{
  position:absolute; left:-24px; bottom:-24px; background:#fff; border-radius:var(--r-m); padding:14px 16px;
  box-shadow:var(--shadow-l); display:flex; align-items:center; gap:12px; min-width:190px;
}
.hero-float .dot{width:8px; height:8px; border-radius:50%; background:var(--mint); flex:0 0 auto; box-shadow:0 0 0 4px rgba(52,211,153,.18)}
.hero-float b{display:block; color:var(--ink); font-size:15px; font-weight:800; line-height:1.2}
.hero-float small{display:block; color:var(--ink-3); font-size:11.5px; margin-top:3px}

/* ---------- 理念区 ---------- */
.idea-grid{display:grid; grid-template-columns:5fr 7fr; gap:48px; align-items:start}
.idea-left{padding-top:0}
.idea-right{padding-top:32px; display:flex; flex-direction:column; gap:16px}
.pill-card{
  position:relative; background:#fff; border:1px solid var(--line); border-radius:var(--r-l); padding:22px 24px 22px 26px;
  box-shadow:var(--shadow-s); transition:transform .25s, box-shadow .25s;
}
.pill-card::before{content:""; position:absolute; left:0; top:18px; bottom:18px; width:3px; border-radius:999px; background:var(--grad)}
.pill-card h3{font-size:18px; margin-bottom:6px}
.pill-card p{font-size:14px; line-height:1.8; color:var(--ink-2)}
.pill-card:hover{transform:translateY(-4px); box-shadow:var(--shadow-m)}

/* ---------- 精选 bento ---------- */
.bento{display:grid; grid-template-columns:repeat(6,1fr); gap:24px}
.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-l); overflow:hidden;
  box-shadow:var(--shadow-s); transition:transform .25s, box-shadow .25s; display:flex; flex-direction:column;
}
.card:hover{transform:translateY(-4px); box-shadow:var(--shadow-m)}
.card-media{overflow:hidden; position:relative}
.card-media img{width:100%; height:100%; object-fit:cover; transition:transform .3s ease}
.card:hover .card-media img{transform:scale(1.03)}
.bento-lg{grid-column:span 4; grid-row:span 2}
.bento-lg .card-media{aspect-ratio:16/10}
.bento-sm{grid-column:span 2}
.bento-sm .card-media{aspect-ratio:16/9}
.card-body{padding:22px 24px 24px; display:flex; flex-direction:column; gap:10px; flex:1 1 auto}
.pill{display:inline-flex; align-items:center; height:24px; padding:0 10px; border-radius:var(--r-full); background:var(--bg-soft); color:var(--brand-600); font-size:11.5px; font-weight:600; align-self:flex-start}
.card h3{font-size:18px; line-height:1.45; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden}
.bento-lg h3{font-size:21px}
.card p{font-size:14px; line-height:1.8; color:var(--ink-2); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden}
.card-meta{margin-top:auto; display:flex; align-items:center; justify-content:space-between; font-size:13px; color:var(--ink-3)}

/* ---------- 数据徽章 ---------- */
.stats{display:grid; grid-template-columns:repeat(4,1fr); gap:20px}
.stat{
  position:relative; border-radius:var(--r-l); padding:24px; background:var(--ink); color:#fff;
  box-shadow:var(--shadow-m); overflow:hidden;
}
.stat::after{content:""; position:absolute; right:-30px; top:-30px; width:96px; height:96px; border-radius:50%; background:rgba(255,255,255,.06)}
.stat .num{font-size:44px; font-weight:800; line-height:1.1; font-variant-numeric:tabular-nums; color:#fff}
.stat .lab{font-size:12.5px; color:rgba(255,255,255,.72); margin-top:8px; line-height:1.6}
.stat .spot{position:absolute; right:18px; top:18px; width:6px; height:6px; border-radius:50%; background:var(--mint); box-shadow:0 0 0 4px rgba(52,211,153,.18)}

/* ---------- 最新信息 ---------- */
.list-stack{display:flex; flex-direction:column; gap:16px}
.post-card{
  display:flex; gap:20px; align-items:stretch; background:#fff; border:1px solid var(--line);
  border-radius:var(--r-l); padding:16px; box-shadow:var(--shadow-s); color:inherit;
  transition:transform .2s, box-shadow .2s, border-color .2s;
}
.post-card:hover{transform:translateY(-2px); box-shadow:var(--shadow-m); border-color:#DCCFF8; color:inherit}
.post-thumb{width:200px; flex:0 0 200px; aspect-ratio:4/3; border-radius:var(--r-m); overflow:hidden; background:var(--bg-soft)}
.post-thumb img{width:100%; height:100%; object-fit:cover; transition:transform .3s}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-main{display:flex; flex-direction:column; gap:8px; padding:6px 8px 6px 0; flex:1 1 auto; min-width:0}
.post-main h3{font-size:18px; line-height:1.5; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; transition:color .2s}
.post-card:hover .post-main h3{color:var(--brand-600)}
.post-main p{font-size:14px; line-height:1.8; color:var(--ink-2); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden}
.post-foot{margin-top:auto; display:flex; align-items:center; gap:14px; font-size:13px; color:var(--ink-3)}
.post-foot .more{color:var(--brand-600); font-weight:600; margin-left:auto}

.empty-state{
  border:1px dashed var(--line); border-radius:var(--r-l); background:#fff; padding:48px 24px; text-align:center;
}
.empty-state .ico{width:48px; height:48px; border-radius:16px; background:var(--bg-soft); color:var(--brand-500); display:grid; place-items:center; margin:0 auto 14px; font-size:20px}
.empty-state p{font-size:14px; color:var(--ink-2); margin-bottom:16px}

/* ---------- 适用场景 ---------- */
.scene-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:20px}
.scene{background:#fff; border:1px solid var(--line); border-radius:var(--r-l); padding:24px; box-shadow:var(--shadow-s); transition:transform .25s, box-shadow .25s}
.scene:hover{transform:translateY(-4px); box-shadow:var(--shadow-m)}
.scene .ico{width:44px; height:44px; border-radius:14px; display:grid; place-items:center; background:var(--bg-soft); color:var(--brand-600); font-size:18px; margin-bottom:14px}
.scene h3{font-size:17px; margin-bottom:8px}
.scene p{font-size:13.5px; line-height:1.8; color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq-grid{display:grid; grid-template-columns:4fr 8fr; gap:48px; align-items:start}
.faq-card{background:#fff; border:1px solid var(--line); border-radius:var(--r-l); box-shadow:var(--shadow-s); overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px; text-align:left;
  padding:20px 24px; font-size:16px; font-weight:600; color:var(--ink); min-height:64px; transition:color .2s, background .2s;
}
.faq-q:hover{background:var(--brand-50); color:var(--brand-600)}
.faq-q .mark{flex:0 0 auto; width:22px; height:22px; position:relative; transition:transform .2s ease}
.faq-q .mark::before,.faq-q .mark::after{content:""; position:absolute; background:var(--brand-600); border-radius:2px}
.faq-q .mark::before{left:0; top:10px; width:22px; height:2px}
.faq-q .mark::after{left:10px; top:0; width:2px; height:22px; transition:opacity .2s}
.faq-item.is-open .faq-q{color:var(--brand-600)}
.faq-item.is-open .faq-q .mark{transform:rotate(45deg)}
.faq-a{max-height:0; overflow:hidden; transition:max-height .24s ease}
.faq-a-inner{padding:0 24px 22px; font-size:15px; line-height:1.8; color:var(--ink-2)}

/* ---------- CTA ---------- */
.cta{
  position:relative; overflow:hidden; border-radius:var(--r-xl); padding:48px;
  background:linear-gradient(120deg,#F5F0FF 0%,#FFFFFF 62%);
  border:1px solid var(--line); box-shadow:var(--shadow-m);
}
.cta::after{content:""; position:absolute; right:-70px; top:-70px; width:260px; height:260px; border-radius:50%; background:rgba(255,122,69,.12)}
.cta-grid{position:relative; display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:center}
.cta h2{font-size:26px; margin-bottom:12px; font-weight:800}
.cta p{font-size:15px; line-height:1.85; color:var(--ink-2)}
.sub-form{display:flex; gap:12px; flex-wrap:wrap}
.sub-form input{
  flex:1 1 220px; height:48px; padding:0 16px; border-radius:12px; border:1px solid var(--line);
  background:#fff; color:var(--ink); font-size:15px; transition:border-color .2s, box-shadow .2s;
}
.sub-form input::placeholder{color:var(--ink-3)}
.sub-form input:focus{outline:none; border-color:var(--brand-500); box-shadow:0 0 0 4px rgba(124,58,237,.15)}
.form-hint{font-size:12.5px; color:var(--ink-3); margin-top:12px}
.form-msg{font-size:13px; color:var(--brand-600); margin-top:10px; min-height:18px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:auto; background:#fff; border-top:1px solid var(--line); padding:56px 0 0; position:relative}
.site-footer::before{content:""; position:absolute; top:-1px; left:40px; width:56px; height:3px; background:var(--grad); border-radius:999px}
.footer-grid{display:grid; grid-template-columns:1.6fr 1fr 1fr 1.4fr; gap:40px}
.footer-brand p{font-size:13.5px; line-height:1.9; color:var(--ink-2); margin-top:16px; max-width:32ch}
.footer-domain{display:inline-block; margin-top:12px; font-size:12.5px; color:var(--ink-3); letter-spacing:.03em}
.footer-col h4{font-size:14px; font-weight:700; color:var(--ink); margin-bottom:14px}
.footer-col a{display:block; font-size:13.5px; color:var(--ink-2); padding:5px 0; transition:color .2s}
.footer-col a:hover{color:var(--brand-600); text-decoration:underline; text-decoration-thickness:2px; text-underline-offset:4px}
.footer-note{font-size:13px; line-height:1.9; color:var(--ink-2)}
.footer-bottom{
  margin-top:48px; border-top:1px solid var(--line); padding:20px 0 28px;
  display:flex; flex-wrap:wrap; gap:10px 24px; align-items:center; justify-content:space-between;
  font-size:12px; color:var(--ink-3);
}
.footer-bottom .disc{max-width:62ch; line-height:1.7}

/* ---------- 动效 ---------- */
.fade-up{opacity:0; transform:translateY(12px); animation:fadeUp .26s cubic-bezier(.22,.61,.36,1) forwards}
.fade-up.d1{animation-delay:.06s}
.fade-up.d2{animation-delay:.12s}
@keyframes fadeUp{to{opacity:1; transform:translateY(0)}}
@media (prefers-reduced-motion:reduce){
  .fade-up{animation:none; opacity:1; transform:none}
  *{transition-duration:.01ms !important}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .sidebar{width:216px}
  .main-wrap{margin-left:216px}
  .container-main{padding:0 32px}
  .hero{padding:48px}
  .hero h1{font-size:38px}
  .site-footer::before{left:32px}
}
@media (max-width:1023px){
  .sidebar{display:none}
  .main-wrap{margin-left:0}
  .topbar{display:flex}
  .container-main{padding:0 24px}
  .section{padding:56px 0}
  .hero{padding:40px; border-radius:var(--r-l)}
  .hero-grid{grid-template-columns:1fr; gap:32px}
  .hero h1{font-size:32px}
  .hero-float{left:auto; right:12px; bottom:-18px}
  .idea-grid{grid-template-columns:1fr; gap:32px}
  .idea-right{padding-top:0}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-lg{grid-column:span 2; grid-row:auto}
  .bento-sm{grid-column:span 2}
  .stats{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr; gap:28px}
  .cta-grid{grid-template-columns:1fr; gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr; gap:32px}
  .site-footer::before{left:24px}
}
@media (max-width:767px){
  .container-main{padding:0 16px}
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .h2{font-size:23px}
  .hero{padding:32px 24px; border-radius:var(--r-l)}
  .hero h1{font-size:28px}
  .hero .hero-sub{font-size:15.5px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .hero-float{position:static; margin-top:16px; left:auto; right:auto; bottom:auto}
  .bento{grid-template-columns:1fr; gap:16px}
  .bento-lg,.bento-sm{grid-column:span 1}
  .bento-lg .card-media{aspect-ratio:4/3}
  .stats{grid-template-columns:repeat(2,1fr); gap:12px}
  .stat{padding:20px}
  .stat .num{font-size:34px}
  .scene-grid{grid-template-columns:1fr}
  .post-card{gap:12px; padding:12px}
  .post-thumb{width:96px; flex:0 0 96px; aspect-ratio:1/1}
  .post-main{padding:2px 4px 2px 0; gap:6px}
  .post-main h3{font-size:16px}
  .post-main p{display:none}
  .post-foot{font-size:12px; gap:8px; flex-wrap:wrap}
  .faq-q{padding:16px 18px; font-size:15.5px}
  .faq-a-inner{padding:0 18px 18px; font-size:14.5px}
  .cta{padding:32px 24px; border-radius:var(--r-l)}
  .cta h2{font-size:21px}
  .sub-form input{flex:1 1 100%}
  .sub-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr; gap:28px}
  .footer-bottom{flex-direction:column; align-items:flex-start}
  .site-footer::before{left:16px}
}

/* roulang page: article */
:root{
  --brand-50:#F5F0FF; --brand-100:#EDE4FF; --brand-300:#B79BF5;
  --brand-500:#7C3AED; --brand-600:#6D28D9; --brand-800:#4C1D95;
  --accent-400:#FF9A6B; --accent-500:#FF7A45; --accent-600:#F2603A;
  --mint:#34D399; --sand:#FFD166;
  --ink:#1B1430; --ink-2:#5B5470; --ink-3:#8B849E;
  --line:#E8E2F2; --bg:#FBF8F3; --bg-soft:#F3EEFB; --white:#FFFFFF;
  --grad:linear-gradient(135deg,#6D28D9 0%,#A855F7 45%,#FF7A45 100%);
  --shadow-s:0 1px 2px rgba(27,20,48,.05);
  --shadow-m:0 10px 28px -14px rgba(109,40,217,.22);
  --shadow-l:0 22px 48px -22px rgba(109,40,217,.32);
  --r-s:10px; --r-m:16px; --r-l:24px; --r-xl:32px; --r-full:999px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
::selection{background:var(--brand-100);color:var(--brand-800)}

/* ---------- 布局骨架 ---------- */
.content-shell{min-height:100vh;display:flex;flex-direction:column}
.container-main{width:100%;max-width:1120px;margin:0 auto;padding:0 20px}
main{flex:1 0 auto}

/* ---------- 侧栏 ---------- */
.sidebar{
  position:fixed;top:0;left:0;height:100vh;width:280px;background:var(--white);
  border-right:1px solid var(--line);z-index:80;display:flex;flex-direction:column;
  transform:translateX(-100%);transition:transform .24s ease-out;overflow-y:auto;
}
.sidebar.is-open{transform:translateX(0);box-shadow:var(--shadow-l)}
.sidebar::before{content:"";display:block;height:3px;width:100%;background:var(--grad);flex:0 0 auto}
.sidebar-brand{display:flex;align-items:center;gap:10px;padding:20px 18px 18px;position:relative}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:38px;height:38px;flex:0 0 auto;border-radius:12px;background:var(--grad);
  color:#fff;font-weight:800;font-size:18px;display:grid;place-items:center;box-shadow:var(--shadow-m)
}
.brand-text{display:flex;flex-direction:column;font-size:16px;font-weight:800;line-height:1.2;color:var(--ink)}
.brand-sub{font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.08em;margin-top:3px}
.drawer-close{
  position:absolute;right:12px;top:18px;width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line);background:var(--white);color:var(--ink-2);
  font-size:18px;line-height:1;display:grid;place-items:center;cursor:pointer
}
.drawer-close:hover{background:var(--bg-soft);color:var(--brand-600)}

.side-nav{padding:10px 12px 4px;display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
  border-radius:12px;font-size:15px;color:var(--ink-2);
  transition:background .2s ease,color .2s ease
}
.nav-item i{font-style:normal;font-size:10px;color:var(--brand-300);line-height:1}
.nav-item:hover{background:var(--bg-soft);color:var(--brand-600)}
.nav-item:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.nav-item.is-active{background:var(--bg-soft);color:var(--brand-600);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:999px;background:var(--grad)
}
.nav-item.is-active i{color:var(--accent-500)}

.side-divider{height:1px;background:var(--line);margin:12px 18px}
.side-card{
  margin:6px 12px 16px;padding:16px;border-radius:var(--r-m);
  background:linear-gradient(135deg,#F5F0FF 0%,#FFFFFF 100%);
  border:1px solid var(--line);box-shadow:var(--shadow-s)
}
.side-card p{font-size:13px;line-height:1.65;color:var(--ink-2);margin-bottom:12px}
.side-card .btn{width:100%;height:38px;font-size:13px;border-radius:12px}
.side-copy{padding:0 18px 22px;font-size:11px;line-height:1.7;color:var(--ink-3);margin-top:auto}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  position:sticky;top:0;z-index:50;height:56px;display:flex;align-items:center;
  justify-content:space-between;gap:12px;padding:0 16px;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s
}
.mobile-bar.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-s)}
.mobile-bar .brand-mark{width:32px;height:32px;border-radius:10px;font-size:16px}
.mobile-bar .brand-text{font-size:14.5px}
.mobile-bar .brand-sub{font-size:10px;margin-top:1px}
.burger{
  width:44px;height:44px;flex:0 0 auto;border:1px solid var(--line);border-radius:12px;
  background:var(--white);display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:4px;cursor:pointer;transition:background .2s,border-color .2s
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:background .2s}
.burger:hover{background:var(--bg-soft);border-color:var(--brand-300)}
.burger:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(27,20,48,.45);z-index:70;opacity:0;
  pointer-events:none;transition:opacity .24s ease
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;
  padding:0 24px;border-radius:var(--r-m);font-size:15px;font-weight:600;cursor:pointer;
  border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s,filter .2s
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-m)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-l);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-s)}
.btn-ghost{background:var(--white);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand-500);background:var(--bg-soft);color:var(--brand-600)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px}
.btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}

/* ---------- 面包屑 & 文章头 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-size:13px;color:var(--ink-3);padding:24px 0 0
}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--brand-600);font-weight:600}

.pill{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-full);
  background:var(--bg-soft);color:var(--brand-600);font-size:12px;font-weight:600;letter-spacing:.02em
}
.post-head{padding-top:16px}
.post-head h1{
  font-size:28px;line-height:1.3;font-weight:800;letter-spacing:-.02em;color:var(--ink);
  margin:14px 0 16px
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ink-3)}
.meta-row strong{font-weight:600;color:var(--ink-2)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--brand-300);flex:0 0 auto}

.cover-figure{
  margin-top:26px;border-radius:var(--r-l);overflow:hidden;background:var(--white);
  border:1px solid var(--line);box-shadow:var(--shadow-s)
}
.cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 阅读区 ---------- */
.read-layout{display:grid;grid-template-columns:1fr;gap:32px;margin-top:34px}
.read-body{min-width:0}
.read-side{display:flex;flex-direction:column;gap:18px}

/* ---------- 正文排版 ---------- */
.prose-cms{font-size:17px;line-height:1.9;color:var(--ink-2);max-width:720px}
.prose-cms p{margin:0 0 20px}
.prose-cms h2{
  position:relative;font-size:23px;font-weight:700;line-height:1.4;color:var(--ink);
  margin:40px 0 16px;padding-left:16px
}
.prose-cms h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:999px;background:var(--grad)
}
.prose-cms h3{font-size:19px;font-weight:600;line-height:1.5;color:var(--ink);margin:30px 0 12px}
.prose-cms h4{font-size:17px;font-weight:600;color:var(--ink);margin:24px 0 10px}
.prose-cms ul,.prose-cms ol{margin:0 0 20px;padding-left:0}
.prose-cms ul li{position:relative;padding-left:20px;margin-bottom:10px;list-style:none}
.prose-cms ul li::before{
  content:"";position:absolute;left:2px;top:12px;width:6px;height:6px;border-radius:50%;background:var(--brand-500)
}
.prose-cms ol{list-style:decimal;padding-left:22px}
.prose-cms ol li{margin-bottom:10px;padding-left:4px}
.prose-cms ol li::marker{color:var(--brand-600);font-weight:700}
.prose-cms blockquote{
  position:relative;margin:24px 0;padding:16px 20px 16px 24px;
  background:var(--bg-soft);border-radius:0 var(--r-m) var(--r-m) 0;color:var(--ink-2)
}
.prose-cms blockquote::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad);border-radius:999px
}
.prose-cms blockquote p:last-child{margin-bottom:0}
.prose-cms a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;transition:color .2s}
.prose-cms a:hover{color:var(--accent-500)}
.prose-cms img{border-radius:var(--r-l);margin:24px auto;max-width:100%}
.prose-cms figure{margin:24px 0}
.prose-cms figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.prose-cms strong{color:var(--ink);font-weight:600}
.prose-cms code{
  background:var(--bg-soft);border-radius:var(--r-s);padding:2px 5px;font-size:.92em;color:var(--brand-600)
}
.prose-cms pre{
  background:#221A38;color:#EDE4FF;border-radius:var(--r-m);padding:18px 20px;overflow-x:auto;
  font-size:14px;line-height:1.7;margin:24px 0
}
.prose-cms pre code{background:none;color:inherit;padding:0}
.prose-cms table{width:100%;border-collapse:collapse;margin:24px 0;display:block;overflow-x:auto;font-size:15px}
.prose-cms th{background:var(--bg-soft);color:var(--ink);font-weight:600;text-align:left;padding:11px 14px;white-space:nowrap}
.prose-cms td{padding:11px 14px;border-top:1px solid var(--line);color:var(--ink-2)}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--white);border:1px dashed var(--line);border-radius:var(--r-l);
  padding:56px 24px;text-align:center;box-shadow:var(--shadow-s)
}
.empty-icon{
  width:48px;height:48px;border-radius:14px;background:var(--bg-soft);color:var(--brand-500);
  display:grid;place-items:center;font-size:20px;font-weight:800;margin:0 auto 14px
}
.empty-state h2{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:8px}
.empty-state p{font-size:14px;color:var(--ink-2);margin-bottom:20px}

/* ---------- 文末操作条 ---------- */
.post-actions{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line)
}

/* ---------- 侧栏面板 ---------- */
.side-panel{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);
  padding:20px;box-shadow:var(--shadow-s)
}
.side-panel h3{
  display:flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px
}
.side-panel h3::before{content:"";width:16px;height:4px;border-radius:999px;background:var(--grad)}
.side-link-list{display:flex;flex-direction:column;gap:2px}
.side-link-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:9px 10px;border-radius:12px;font-size:14px;color:var(--ink-2);
  transition:background .2s,color .2s
}
.side-link-list a::after{content:"›";font-size:15px;color:var(--brand-300);transition:transform .2s,color .2s}
.side-link-list a:hover{background:var(--bg-soft);color:var(--brand-600)}
.side-link-list a:hover::after{color:var(--accent-500);transform:translateX(3px)}
.side-link-list a:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.side-note{font-size:13px;line-height:1.75;color:var(--ink-3)}
.sub-form{display:flex;flex-direction:column;gap:10px;margin-top:12px}
.field{
  width:100%;height:44px;padding:0 14px;border-radius:12px;border:1px solid var(--line);
  background:var(--bg);font-size:14px;color:var(--ink);outline:none;
  transition:border-color .2s,box-shadow .2s,background .2s
}
.field::placeholder{color:var(--ink-3)}
.field:focus{border-color:var(--brand-500);background:var(--white);box-shadow:0 0 0 4px rgba(124,58,237,.15)}

/* ---------- 相关推荐 ---------- */
.related{margin:56px 0 0}
.section-head{margin-bottom:20px}
.section-head h2{
  font-size:24px;font-weight:700;color:var(--ink);line-height:1.35
}
.section-head h2::before{
  content:"";display:block;width:40px;height:4px;border-radius:999px;background:var(--grad);margin-bottom:12px
}
.section-head p{font-size:14px;color:var(--ink-3);margin-top:8px}
.related-grid{display:grid;grid-template-columns:1fr;gap:16px}

.card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-s);
  transition:transform .24s ease,box-shadow .24s ease
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.card:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.card-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-soft)}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{
  font-size:17px;font-weight:700;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s
}
.card:hover .card-body h3{color:var(--brand-600)}
.card-body p{
  font-size:13.5px;line-height:1.7;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.card-meta{margin-top:auto;font-size:12.5px;color:var(--ink-3);display:flex;align-items:center;gap:8px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;margin-top:64px;background:var(--white);border-top:1px solid var(--line);flex:0 0 auto
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;width:120px;height:3px;background:var(--grad)
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:48px 0 36px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:13.5px;line-height:1.8;color:var(--ink-2);max-width:340px;margin-bottom:10px}
.footer-domain{font-size:12px;color:var(--ink-3);letter-spacing:.06em}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:12px}
.footer-col a{
  display:block;font-size:13.5px;color:var(--ink-2);padding:5px 0;transition:color .2s
}
.footer-col a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px}
.footer-note{font-size:13px;line-height:1.75;color:var(--ink-3);margin-bottom:6px}
.footer-bottom{
  border-top:1px solid var(--line);padding:16px 0 28px;display:flex;flex-wrap:wrap;
  gap:8px;justify-content:space-between;font-size:12px;color:var(--ink-3)
}
.footer-bottom .disc{max-width:620px;line-height:1.7}

/* ---------- 断点 ---------- */
@media (min-width:640px){
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .post-head h1{font-size:32px}
}
@media (min-width:768px){
  .container-main{padding:0 24px}
  .post-head h1{font-size:36px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:repeat(3,1fr)}
}
@media (min-width:1024px){
  .sidebar{width:216px;transform:none;z-index:40;box-shadow:none}
  .drawer-close{display:none}
  .drawer-mask{display:none!important}
  .content-shell{margin-left:216px}
  .mobile-bar{display:none}
  .container-main{padding:0 32px}
  .post-head h1{font-size:40px}
  .read-layout{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;align-items:start}
  .read-side{position:sticky;top:28px}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px}
}
@media (min-width:1280px){
  .sidebar{width:240px}
  .content-shell{margin-left:240px}
  .container-main{padding:0 40px}
  .post-head h1{font-size:44px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
    --brand-50:#F5F0FF;--brand-100:#EDE4FF;--brand-300:#B79BF5;--brand-500:#7C3AED;--brand-600:#6D28D9;--brand-800:#4C1D95;
    --accent-400:#FF9A6B;--accent-500:#FF7A45;--accent-600:#F2603A;
    --mint:#34D399;--sand:#FFD166;
    --ink:#1B1430;--ink-2:#5B5470;--ink-3:#8B849E;--line:#E8E2F2;--bg:#FBF8F3;--bg-soft:#F3EEFB;--white:#FFFFFF;
    --grad:linear-gradient(135deg,#6D28D9 0%,#A855F7 45%,#FF7A45 100%);
    --shadow-s:0 1px 2px rgba(27,20,48,.05);
    --shadow-m:0 10px 28px -14px rgba(109,40,217,.22);
    --shadow-l:0 22px 48px -22px rgba(109,40,217,.32);
    --r-s:10px;--r-m:16px;--r-l:24px;--r-xl:32px;--r-full:999px;
    --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han 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);background:var(--bg);color:var(--ink);
    font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  button{font-family:inherit;border:0;background:none;cursor:pointer}
  input,select,textarea{font-family:inherit;font-size:16px}
  :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}
  ::selection{background:var(--brand-100);color:var(--brand-800)}

  /* ---------- 布局骨架 ---------- */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:240px;background:var(--white);
    border-right:1px solid var(--line);z-index:60;display:flex;flex-direction:column;
  }
  .sidebar::before{content:"";display:block;height:3px;background:var(--grad);flex:0 0 auto}
  .sidebar-scroll{
    flex:1 1 auto;overflow-y:auto;padding:0 16px 16px;display:flex;flex-direction:column;
  }
  .sidebar-scroll::-webkit-scrollbar{width:6px}
  .sidebar-scroll::-webkit-scrollbar-thumb{background:rgba(139,132,158,.4);border-radius:999px}
  .sidebar-scroll::-webkit-scrollbar-track{background:transparent}

  .main{margin-left:240px;min-height:100vh;display:flex;flex-direction:column}
  .container-main{width:100%;max-width:1120px;margin:0 auto;padding:0 40px}

  /* ---------- 品牌 Logo ---------- */
  .brand{display:flex;align-items:center;gap:10px}
  .brand-mark{
    width:38px;height:38px;flex:0 0 38px;border-radius:12px;background:var(--grad);
    color:#fff;font-size:18px;font-weight:800;display:flex;align-items:center;justify-content:center;
    box-shadow:var(--shadow-m);letter-spacing:0;
  }
  .brand-text{display:flex;flex-direction:column;font-size:15px;font-weight:800;color:var(--ink);line-height:1.25;letter-spacing:-.01em}
  .brand-sub{font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.04em;margin-top:2px}
  .brand-block{height:88px;display:flex;align-items:center;padding:0 4px;border-bottom:1px solid var(--line);margin-bottom:14px}

  /* ---------- 侧栏导航 ---------- */
  .side-nav{display:flex;flex-direction:column;gap:4px}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
    border-radius:12px;font-size:15px;color:var(--ink-2);transition:background .2s,color .2s;
  }
  .nav-item i{font-style:normal;font-size:11px;color:var(--brand-300);transition:color .2s}
  .nav-item:hover{background:var(--bg-soft);color:var(--brand-600)}
  .nav-item:hover i{color:var(--brand-500)}
  .nav-item.is-active{background:var(--bg-soft);color:var(--brand-600);font-weight:600}
  .nav-item.is-active i{color:var(--brand-500)}
  .nav-item.is-active::before{
    content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:999px;background:var(--grad);
  }
  .side-divider{height:1px;background:var(--line);margin:18px 4px}

  .side-card{
    margin:0 4px;padding:16px;border-radius:var(--r-m);
    background:linear-gradient(160deg,var(--brand-50) 0%,#FFF6F1 100%);
    border:1px solid var(--brand-100);
  }
  .side-card p{font-size:13px;line-height:1.6;color:var(--ink-2);margin-bottom:12px}
  .side-card .btn-mini{width:100%;height:38px;font-size:13px}
  .side-copy{margin:16px 4px 0;font-size:11px;line-height:1.7;color:var(--ink-3)}

  /* ---------- 移动端顶部栏与抽屉 ---------- */
  .mobile-bar{
    display:none;position:sticky;top:0;z-index:70;height:60px;align-items:center;justify-content:space-between;
    padding:0 16px;background:rgba(251,248,243,.92);backdrop-filter:blur(10px);
    border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s;
  }
  .mobile-bar.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-s)}
  .burger{
    width:44px;height:44px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
    border-radius:12px;background:var(--white);border:1px solid var(--line);
  }
  .burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(27,20,48,.45);opacity:0;visibility:hidden;transition:opacity .24s;z-index:80;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--white);z-index:90;
    transform:translateX(-100%);transition:transform .24s ease-out;display:flex;flex-direction:column;
    box-shadow:var(--shadow-l);
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer::before{content:"";display:block;height:3px;background:var(--grad);flex:0 0 auto}
  .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;border-radius:12px;font-size:20px;color:var(--ink-2);
    display:flex;align-items:center;justify-content:center;background:var(--bg-soft);
  }
  .drawer-body{flex:1 1 auto;overflow-y:auto;padding:14px 16px 20px}

  /* ---------- 通用组件 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
    border-radius:var(--r-m);font-size:15px;font-weight:600;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s,filter .2s;
  }
  .btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-m)}
  .btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-l);filter:brightness(1.05)}
  .btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-s)}
  .btn-ghost{background:var(--white);color:var(--ink);border:1px solid var(--line)}
  .btn-ghost:hover{border-color:var(--brand-500);background:var(--bg-soft);color:var(--brand-600)}
  .btn-mini{display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 18px;border-radius:12px;font-size:13px;font-weight:600;background:var(--grad);color:#fff;box-shadow:var(--shadow-s);transition:filter .2s,transform .2s}
  .btn-mini:hover{filter:brightness(1.06);transform:translateY(-1px)}
  .btn[disabled],.btn-mini[disabled]{opacity:.4;cursor:not-allowed}

  .pill{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-full);
    background:var(--bg-soft);color:var(--brand-600);font-size:12px;font-weight:600;letter-spacing:.01em;
  }
  .pill-accent{background:#FFF1EA;color:var(--accent-600)}

  .link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-size:14px;font-weight:600;transition:color .2s}
  .link-arrow span{transition:transform .2s}
  .link-arrow:hover{color:var(--accent-500)}
  .link-arrow:hover span{transform:translateX(4px)}
  .link-plain{color:var(--brand-600);font-weight:600;border-bottom:1px solid rgba(109,40,217,.35);padding-bottom:1px;transition:color .2s,border-color .2s}
  .link-plain:hover{color:var(--accent-500);border-bottom-color:var(--accent-500)}

  .h2-bar{display:block;width:40px;height:4px;border-radius:999px;background:var(--grad);margin-bottom:12px}
  .section{padding:64px 0}
  .section-tight{padding:48px 0}
  .sec-head{margin-bottom:32px;max-width:720px}
  .sec-head h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
  .sec-head p{font-size:15px;color:var(--ink-2);margin-top:12px;max-width:66ch}

  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);padding:24px 0 16px;flex-wrap:wrap}
  .breadcrumb a{transition:color .2s}
  .breadcrumb a:hover{color:var(--brand-600)}
  .breadcrumb .sep{color:#C9C2D8}
  .breadcrumb .current{color:var(--brand-600);font-weight:600}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;overflow:hidden;border-radius:var(--r-xl);background:var(--white);
    border:1px solid var(--line);box-shadow:var(--shadow-s);padding:48px 44px;
    display:grid;grid-template-columns:1.35fr .9fr;gap:40px;align-items:center;
  }
  .hero::after{
    content:"";position:absolute;right:-90px;top:-90px;width:260px;height:260px;border-radius:50%;
    background:radial-gradient(circle at 30% 30%,rgba(168,85,247,.16),rgba(255,122,69,.10) 60%,transparent 72%);
  }
  .hero-copy{position:relative;z-index:2}
  .hero h1{font-size:40px;line-height:1.22;font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
  .hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero p.lead{font-size:17px;color:var(--ink-2);max-width:56ch;margin-bottom:24px}
  .hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
  .hero-side{position:relative;z-index:2}
  .hero-figure{
    border-radius:var(--r-l);overflow:hidden;background:var(--bg-soft);aspect-ratio:16/10;
    border:8px solid #fff;box-shadow:var(--shadow-m);
  }
  .hero-figure img{width:100%;height:100%;object-fit:cover}
  .hero-note{
    margin-top:16px;background:var(--white);border:1px solid var(--line);border-radius:var(--r-m);
    padding:14px 16px;font-size:13px;color:var(--ink-2);line-height:1.7;box-shadow:var(--shadow-s);
    display:flex;gap:10px;align-items:flex-start;
  }
  .dot-live{width:8px;height:8px;border-radius:50%;background:var(--mint);flex:0 0 8px;margin-top:7px;box-shadow:0 0 0 4px rgba(52,211,153,.16)}

  /* ---------- 概览三卡 ---------- */
  .overview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .overview-card{
    background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);padding:24px;
    box-shadow:var(--shadow-s);transition:transform .25s,box-shadow .25s;
  }
  .overview-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
  .overview-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
  .overview-card p{font-size:14px;color:var(--ink-2);line-height:1.75}
  .overview-num{
    display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:11px;
    background:var(--bg-soft);color:var(--brand-600);font-weight:800;font-size:14px;
    font-variant-numeric:tabular-nums;margin-bottom:14px;
  }

  /* ---------- 时间线 ---------- */
  .timeline-wrap{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}
  .timeline{position:relative;padding-left:36px;max-width:820px}
  .timeline::before{content:"";position:absolute;left:9px;top:10px;bottom:14px;width:2px;background:linear-gradient(180deg,var(--brand-300),var(--line))}
  .tl-item{position:relative;margin-bottom:24px}
  .tl-item:last-child{margin-bottom:0}
  .tl-item::before{
    content:"";position:absolute;left:-33px;top:24px;width:14px;height:14px;border-radius:50%;
    background:var(--brand-500);box-shadow:0 0 0 4px var(--bg),0 0 0 5px var(--line);
  }
  .tl-item:first-child::before{background:var(--grad);box-shadow:0 0 0 4px var(--bg),0 0 0 5px var(--brand-300)}
  .tl-card{
    background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);padding:24px 26px;
    box-shadow:var(--shadow-s);transition:transform .25s,box-shadow .25s,border-color .25s;
  }
  .tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--brand-100)}
  .tl-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
  .tl-date{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;letter-spacing:.02em}
  .tl-title{font-size:19px;font-weight:700;line-height:1.5;margin-bottom:8px}
  .tl-desc{font-size:14.5px;color:var(--ink-2);line-height:1.8;margin-bottom:12px;max-width:64ch}
  .tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
  .tl-tag{font-size:12px;color:var(--ink-3);background:var(--bg);border:1px solid var(--line);border-radius:var(--r-full);padding:3px 10px}

  .aside-card{
    position:sticky;top:24px;background:var(--white);border:1px solid var(--line);
    border-radius:var(--r-l);padding:24px;box-shadow:var(--shadow-s);
  }
  .aside-card h3{font-size:16px;font-weight:700;margin-bottom:12px}
  .aside-card p{font-size:13.5px;color:var(--ink-2);line-height:1.8;margin-bottom:16px}
  .aside-list{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}
  .aside-list li{display:flex;gap:10px;font-size:13.5px;color:var(--ink-2);line-height:1.7}
  .aside-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-300);flex:0 0 6px;margin-top:8px}
  .aside-mini{font-size:12px;color:var(--ink-3);line-height:1.7;border-top:1px dashed var(--line);padding-top:14px}

  /* ---------- 节奏卡 ---------- */
  .rhythm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .rhythm-card{
    background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);padding:26px;
    box-shadow:var(--shadow-s);position:relative;overflow:hidden;transition:transform .25s,box-shadow .25s;
  }
  .rhythm-card::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:999px;background:var(--grad)}
  .rhythm-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
  .rhythm-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
  .rhythm-card p{font-size:14px;color:var(--ink-2);line-height:1.8}
  .rhythm-card .rhythm-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
  .rhythm-card .num{
    width:30px;height:30px;border-radius:10px;background:#1B1430;color:#fff;font-size:13px;font-weight:800;
    display:inline-flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
  }
  .rhythm-card .label{font-size:12px;color:var(--ink-3);letter-spacing:.04em}

  /* ---------- FAQ ---------- */
  .faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start}
  .faq-intro h2{font-size:30px;font-weight:700;line-height:1.3;margin-bottom:12px}
  .faq-intro p{font-size:15px;color:var(--ink-2);max-width:34ch}
  .faq-group{background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-s);overflow:hidden}
  .faq-item + .faq-item{border-top:1px solid var(--line)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;
    padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);transition:color .2s,background .2s;min-height:64px;
  }
  .faq-q:hover{color:var(--brand-600);background:#FCFAFF}
  .faq-icon{
    flex:0 0 26px;width:26px;height:26px;border-radius:8px;background:var(--bg-soft);color:var(--brand-600);
    display:inline-flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;
    transition:transform .2s,background .2s,color .2s;
  }
  .faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--grad);color:#fff}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
  .faq-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:66ch}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;border-radius:var(--r-xl);border:1px solid var(--brand-100);
    background:linear-gradient(135deg,var(--brand-50) 0%,#FFFFFF 62%);
    padding:48px 44px;display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;
  }
  .cta-band::after{
    content:"";position:absolute;right:-70px;bottom:-90px;width:260px;height:260px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,122,69,.16),transparent 70%);
  }
  .cta-band h2{font-size:28px;font-weight:700;line-height:1.3;margin-bottom:10px}
  .cta-band p{font-size:15px;color:var(--ink-2);max-width:44ch}
  .cta-form{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}
  .cta-form input{
    flex:1 1 220px;min-width:0;height:48px;padding:0 16px;border-radius:12px;border:1px solid var(--line);
    background:var(--white);color:var(--ink);transition:border-color .2s,box-shadow .2s;
  }
  .cta-form input::placeholder{color:var(--ink-3)}
  .cta-form input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(124,58,237,.15)}
  .cta-hint{font-size:12.5px;color:var(--ink-3);margin-top:12px}
  .cta-hint.is-ok{color:var(--brand-600)}

  /* ---------- 页脚 ---------- */
  .site-footer{margin-top:auto;background:var(--white);border-top:1px solid var(--line);position:relative}
  .site-footer::before{content:"";display:block;height:3px;width:96px;background:var(--grad);border-radius:999px}
  .footer-grid{
    display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding:56px 0 40px;
  }
  .footer-brand p{font-size:13.5px;color:var(--ink-2);line-height:1.8;margin:14px 0 12px;max-width:34ch}
  .footer-domain{font-size:12px;color:var(--ink-3);letter-spacing:.03em}
  .footer-col h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px}
  .footer-col a{display:block;font-size:13.5px;color:var(--ink-2);margin-bottom:10px;transition:color .2s,border-color .2s;border-bottom:2px solid transparent;width:fit-content}
  .footer-col a:hover{color:var(--brand-600);border-bottom-color:var(--brand-600)}
  .footer-note{font-size:13px;color:var(--ink-2);line-height:1.8;margin-bottom:8px;max-width:30ch}
  .footer-bottom{
    border-top:1px solid var(--line);padding:20px 0 28px;display:flex;justify-content:space-between;
    gap:16px;flex-wrap:wrap;font-size:12px;color:var(--ink-3);line-height:1.7;
  }
  .footer-bottom .disc{max-width:62ch}

  /* ---------- 动效 ---------- */
  @keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
  .fade-up{animation:fadeUp .26s cubic-bezier(.22,.61,.36,1) both}
  .fade-up.d2{animation-delay:.06s}
  .fade-up.d3{animation-delay:.12s}
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    .sidebar{width:216px}
    .main{margin-left:216px}
    .container-main{padding:0 32px}
    .hero{padding:40px 32px;grid-template-columns:1.3fr .9fr;gap:28px}
    .hero h1{font-size:34px}
    .timeline-wrap{grid-template-columns:1fr 270px;gap:28px}
  }
  @media (max-width:1023px){
    .sidebar{display:none}
    .main{margin-left:0}
    .mobile-bar{display:flex}
    .container-main{padding:0 24px}
    .hero{grid-template-columns:1fr;padding:32px 24px;gap:24px}
    .hero h1{font-size:30px}
    .hero-figure{aspect-ratio:16/9}
    .timeline-wrap{grid-template-columns:1fr}
    .aside-card{position:static}
    .faq-layout{grid-template-columns:1fr;gap:24px}
    .faq-intro p{max-width:60ch}
    .cta-band{grid-template-columns:1fr;padding:32px 24px}
    .overview-grid,.rhythm-grid{grid-template-columns:1fr 1fr}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:40px 0 32px}
    .section{padding:48px 0}
  }
  @media (max-width:767px){
    .hero h1{font-size:28px}
    .hero p.lead{font-size:16px}
    .sec-head h2,.faq-intro h2,.cta-band h2{font-size:23px}
    .overview-grid,.rhythm-grid{grid-template-columns:1fr}
    .timeline{padding-left:28px}
    .timeline::before{left:7px}
    .tl-item::before{left:-27px;top:22px;width:12px;height:12px}
    .tl-card{padding:20px}
    .tl-title{font-size:17px}
    .btn{width:100%}
    .hero-actions{gap:10px}
    .cta-form{flex-direction:column}
    .cta-form .btn{width:100%}
    .footer-grid{grid-template-columns:1fr;gap:24px}
    .footer-bottom{flex-direction:column}
  }
  @media (max-width:519px){
    .container-main{padding:0 16px}
    .hero{padding:24px 18px;border-radius:24px}
    .hero h1{font-size:26px}
    .overview-card,.rhythm-card{padding:20px}
    .faq-q{padding:18px 18px;font-size:15px}
    .faq-a-inner{padding:0 18px 20px}
    .cta-band{padding:26px 18px;border-radius:24px}
  }

/* roulang page: category2 */
:root{
  --brand-50:#F5F0FF; --brand-100:#EDE4FF; --brand-300:#B79BF5;
  --brand-500:#7C3AED; --brand-600:#6D28D9; --brand-800:#4C1D95;
  --accent-400:#FF9A6B; --accent-500:#FF7A45; --accent-600:#F2603A;
  --mint:#34D399; --sand:#FFD166;
  --ink:#1B1430; --ink-2:#5B5470; --ink-3:#8B849E;
  --line:#E8E2F2; --bg:#FBF8F3; --bg-soft:#F3EEFB; --white:#FFFFFF;
  --grad:linear-gradient(135deg,#6D28D9 0%,#A855F7 45%,#FF7A45 100%);
  --r-s:10px; --r-m:16px; --r-l:24px; --r-xl:32px; --r-full:999px;
  --shadow-s:0 1px 2px rgba(27,20,48,.05);
  --shadow-m:0 10px 28px -14px rgba(109,40,217,.22);
  --shadow-l:0 22px 48px -22px rgba(109,40,217,.32);
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:var(--r-s);}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.25;color:var(--ink);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}

/* ============ 布局骨架 ============ */
.app-shell{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--white);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:0 16px 16px;z-index:50;overflow-y:auto;
}
.app-shell::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);}
.app-shell::-webkit-scrollbar{width:6px;}
.app-shell::-webkit-scrollbar-thumb{background:rgba(139,132,158,.4);border-radius:999px;}
.main-area{margin-left:var(--sidebar-w);min-height:100vh;}
.container-main{max-width:1120px;margin:0 auto;padding:0 40px;}

/* ============ 侧栏品牌 ============ */
.shell-brand{height:88px;display:flex;align-items:center;flex:none;}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:38px;height:38px;flex:none;border-radius:12px;background:var(--grad);
  color:#fff;font-weight:800;font-size:18px;display:grid;place-items:center;
  box-shadow:var(--shadow-m);letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;font-weight:800;font-size:15px;color:var(--ink);}
.brand-sub{font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.04em;margin-top:3px;}

/* ============ 侧栏导航 ============ */
.side-nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;
  padding:0 12px;border-radius:12px;color:var(--ink-2);font-size:15px;
  transition:background .2s ease,color .2s ease;
}
.nav-item i{font-style:normal;font-size:11px;opacity:.65;transition:opacity .2s;}
.nav-item:hover{background:var(--bg-soft);color:var(--brand-600);}
.nav-item:hover i{opacity:1;}
.nav-item.is-active{background:var(--bg-soft);color:var(--brand-600);font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:999px;background:var(--grad);
}
.shell-divider{height:1px;background:var(--line);margin:20px 0 16px;}
.shell-sub{
  margin-top:auto;background:linear-gradient(135deg,var(--brand-50) 0%,#FFF3EC 100%);
  border:1px solid var(--line);border-radius:var(--r-m);padding:14px;
}
.shell-sub p{font-size:12px;line-height:1.6;color:var(--ink-2);margin-bottom:10px;}
.shell-copy{margin-top:14px;font-size:11px;color:var(--ink-3);line-height:1.6;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-m);font-weight:600;font-size:15px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-m);}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-l);filter:brightness(1.05);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-s);}
.btn-ghost{background:var(--white);color:var(--ink);border:1px solid var(--line);}
.btn-ghost:hover{background:var(--bg-soft);border-color:var(--brand-500);color:var(--brand-600);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:var(--r-s);}
.btn-block{width:100%;}
.btn[disabled]{opacity:.4;cursor:not-allowed;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:14px;transition:gap .2s ease,color .2s ease;}
.link-arrow::after{content:"→";transition:transform .2s ease;}
.link-arrow:hover{color:var(--accent-500);}
.link-arrow:hover::after{transform:translateX(4px);}

/* ============ 移动端顶部栏 & 抽屉 ============ */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:60;height:60px;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;transition:border-color .2s ease,box-shadow .2s ease;
}
.mobile-bar.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-s);}
.burger{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  color:var(--ink-2);transition:background .2s ease,color .2s ease;
}
.burger:hover{background:var(--bg-soft);color:var(--brand-600);}
.burger span{display:block;width:20px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:currentColor;border-radius:2px;}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(27,20,48,.45);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .24s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;left:0;width:280px;height:100%;background:var(--white);
  z-index:80;transform:translateX(-100%);transition:transform .24s ease-out;
  padding:20px 16px;overflow-y:auto;border-right:1px solid var(--line);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;font-size:22px;color:var(--ink-2);}
.drawer-close:hover{background:var(--bg-soft);color:var(--brand-600);}

/* ============ 页面结构 ============ */
.page-wrap{padding:32px 0 0;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:16px;flex-wrap:wrap;}
.breadcrumb a{color:var(--ink-3);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--brand-600);font-weight:600;}

.page-hero{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  background:var(--grad);color:#fff;padding:56px 48px;
  box-shadow:var(--shadow-l);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.12) 1px,transparent 1px);
  background-size:32px 32px;
}
.page-hero > *{position:relative;z-index:1;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;
  border-radius:var(--r-full);background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.35);font-size:12px;font-weight:600;letter-spacing:.04em;
  margin-bottom:18px;
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--mint);}
.page-hero h1{font-size:44px;font-weight:800;line-height:1.2;letter-spacing:-.02em;color:#fff;}
.page-hero .hero-desc{
  margin-top:16px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.92);max-width:42em;
}
.hero-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap;}
.hero-actions .btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5);color:#fff;}
.hero-actions .btn-ghost:hover{background:#fff;color:var(--brand-600);border-color:#fff;}

/* ============ 区块通用 ============ */
.section{padding:72px 0 0;}
.section-head{margin-bottom:32px;}
.sec-bar{width:40px;height:4px;border-radius:999px;background:var(--grad);margin-bottom:12px;}
.section-head h2{font-size:30px;font-weight:700;}
.section-head p{margin-top:12px;font-size:16px;line-height:1.8;color:var(--ink-2);max-width:42em;}

/* ============ 不对称服务卡网格 ============ */
.svc-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.svc-card{
  grid-column:span 12;display:flex;flex-direction:column;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--shadow-s);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease;
}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.svc-card--wide{grid-column:span 7;}
.svc-card--narrow{grid-column:span 5;}
.svc-media{aspect-ratio:16/10;overflow:hidden;background:var(--bg-soft);}
.svc-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.svc-card:hover .svc-media img{transform:scale(1.03);}
.svc-body{padding:26px;display:flex;flex-direction:column;flex:1;gap:14px;}
.pill-icon{
  width:44px;height:44px;border-radius:14px;background:var(--bg-soft);color:var(--brand-600);
  display:grid;place-items:center;font-weight:800;font-size:15px;flex:none;
}
.svc-body h3{font-size:21px;font-weight:700;}
.svc-body .svc-text{font-size:15px;line-height:1.8;color:var(--ink-2);}
.svc-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-full);
  background:var(--bg-soft);color:var(--brand-600);font-size:12px;font-weight:600;
}
.tag--accent{background:#FFF1E9;color:var(--accent-600);}
.svc-foot{margin-top:auto;padding-top:6px;}

/* ============ 能力 / 适用对象 ============ */
.cap-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start;}
.cap-left{grid-column:span 7;}
.cap-right{grid-column:span 5;}
.cap-list{display:flex;flex-direction:column;gap:16px;margin-top:8px;}
.cap-item{
  display:flex;gap:14px;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-l);padding:20px 22px;box-shadow:var(--shadow-s);
  transition:transform .25s ease,box-shadow .25s ease;
}
.cap-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);}
.cap-num{
  width:34px;height:34px;flex:none;border-radius:var(--r-full);background:var(--grad);
  color:#fff;display:grid;place-items:center;font-size:13px;font-weight:800;
  font-variant-numeric:tabular-nums;
}
.cap-item h4{font-size:16px;font-weight:700;margin-bottom:4px;}
.cap-item p{font-size:14px;line-height:1.75;color:var(--ink-2);}
.cap-figure{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--shadow-s);
}
.cap-figure .fig-img{aspect-ratio:4/3;overflow:hidden;background:var(--bg-soft);}
.cap-figure .fig-img img{width:100%;height:100%;object-fit:cover;}
.cap-figure .fig-body{padding:22px;}
.cap-figure .fig-body h4{font-size:17px;font-weight:700;margin-bottom:8px;}
.cap-figure .fig-body p{font-size:14px;line-height:1.8;color:var(--ink-2);}

/* ============ 数据徽章 ============ */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px;}
.stat-card{
  position:relative;background:var(--brand-800);border-radius:var(--r-l);
  padding:24px 22px;color:#fff;overflow:hidden;
  box-shadow:var(--shadow-m);
}
.stat-card::after{
  content:"";position:absolute;right:-24px;top:-24px;width:96px;height:96px;
  border-radius:50%;background:rgba(255,255,255,.08);
}
.stat-dot{position:absolute;top:16px;right:16px;width:6px;height:6px;border-radius:50%;background:var(--mint);}
.stat-num{
  display:block;font-size:40px;font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;margin-bottom:6px;letter-spacing:-.02em;
}
.stat-label{font-size:12px;color:rgba(255,255,255,.78);line-height:1.6;}

/* ============ 交付流程 ============ */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.flow-step{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);
  padding:24px 22px;box-shadow:var(--shadow-s);position:relative;
  transition:transform .25s ease,box-shadow .25s ease;
}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.flow-num{
  width:40px;height:40px;border-radius:var(--r-full);background:var(--grad);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:15px;margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.flow-step h4{font-size:16px;font-weight:700;margin-bottom:8px;}
.flow-step p{font-size:14px;line-height:1.75;color:var(--ink-2);}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start;}
.faq-left{grid-column:span 4;}
.faq-right{grid-column:span 8;}
.faq-left h2{font-size:28px;font-weight:700;margin-bottom:12px;}
.faq-left p{font-size:15px;line-height:1.8;color:var(--ink-2);}
.faq-group{background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-s);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease,background .2s ease;
}
.faq-q:hover{color:var(--brand-600);background:rgba(245,240,255,.5);}
.faq-icon{
  flex:none;width:26px;height:26px;display:grid;place-items:center;border-radius:50%;
  background:var(--bg-soft);color:var(--brand-600);font-size:16px;font-weight:700;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand-600);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-item.is-open .faq-a{max-height:360px;}
.faq-a p{padding:0 24px 20px;font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ============ CTA ============ */
.cta-box{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:linear-gradient(135deg,#F5F0FF 0%,#FFFFFF 70%);
  border:1px solid var(--line);padding:48px;box-shadow:var(--shadow-s);
}
.cta-box::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  border-radius:50%;background:rgba(124,58,237,.08);
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center;}
.cta-copy{grid-column:span 6;}
.cta-copy h2{font-size:28px;font-weight:700;margin-bottom:12px;}
.cta-copy p{font-size:15px;line-height:1.8;color:var(--ink-2);max-width:34em;}
.cta-form{grid-column:span 6;}
.form-row{display:flex;gap:12px;}
.input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-m);
  border:1px solid var(--line);background:var(--white);color:var(--ink);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;outline:none;
}
.input::placeholder{color:var(--ink-3);}
.input:focus{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(124,58,237,.15);}
.form-tip{font-size:12px;color:var(--ink-3);margin-top:10px;}
.form-note{font-size:13px;color:var(--brand-600);font-weight:600;margin-top:10px;display:none;}
.form-note.show{display:block;}

/* ============ 页脚 ============ */
.site-footer{margin-top:80px;background:var(--white);border-top:1px solid var(--line);position:relative;}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;width:120px;height:3px;background:var(--grad);}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;
  padding:56px 0 40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:30em;}
.footer-domain{display:inline-block;margin-top:14px;font-size:12px;color:var(--ink-3);letter-spacing:.04em;}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--ink);}
.footer-col a{display:block;font-size:14px;color:var(--ink-2);padding:5px 0;transition:color .2s ease;}
.footer-col a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px;}
.footer-note{font-size:13px;line-height:1.8;color:var(--ink-3);margin-bottom:6px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 32px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--ink-3);
}
.footer-bottom .disc{max-width:60em;line-height:1.7;}

/* ============ 动效 ============ */
@keyframes fadeUp{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:translateY(0);}}
.fade-up{animation:fadeUp .26s cubic-bezier(.22,.61,.36,1) both;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sidebar-w:216px;}
  .container-main{padding:0 32px;}
  .page-hero{padding:48px 36px;}
  .page-hero h1{font-size:38px;}
}
@media (max-width:1023px){
  .app-shell{display:none;}
  .main-area{margin-left:0;}
  .mobile-bar{display:flex;}
  .container-main{padding:0 24px;}
  .svc-card--wide,.svc-card--narrow{grid-column:span 12;}
  .cap-left,.cap-right{grid-column:span 12;}
  .faq-left{grid-column:span 12;}
  .faq-right{grid-column:span 12;}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .cta-copy,.cta-form{grid-column:span 12;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 32px;}
  .page-hero h1{font-size:32px;}
  .page-wrap{padding:20px 0 0;}
  .section{padding:52px 0 0;}
}
@media (max-width:767px){
  .mobile-bar{height:56px;}
  .page-hero{padding:32px 22px;border-radius:var(--r-l);}
  .page-hero h1{font-size:28px;}
  .page-hero .hero-desc{font-size:15px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .section-head h2{font-size:23px;}
  .svc-body{padding:20px;}
  .cta-box{padding:28px 22px;}
  .cta-copy h2{font-size:22px;}
  .form-row{flex-direction:column;}
  .form-row .btn{width:100%;}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:14px;}
  .stat-num{font-size:32px;}
  .flow-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .faq-q{padding:14px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;}
  .sidebar-note{display:none;}
}

/* roulang page: category3 */
:root{
  --brand-50:#F5F0FF; --brand-100:#EDE4FF; --brand-300:#B79BF5; --brand-500:#7C3AED; --brand-600:#6D28D9; --brand-800:#4C1D95;
  --accent-400:#FF9A6B; --accent-500:#FF7A45; --accent-600:#F2603A;
  --mint:#34D399; --sand:#FFD166;
  --ink:#1B1430; --ink-2:#5B5470; --ink-3:#8B849E;
  --line:#E8E2F2; --bg:#FBF8F3; --bg-soft:#F3EEFB; --white:#FFFFFF;
  --grad:linear-gradient(135deg,#6D28D9 0%,#A855F7 45%,#FF7A45 100%);
  --shadow-s:0 1px 2px rgba(27,20,48,.05);
  --shadow-m:0 10px 28px -14px rgba(109,40,217,.22);
  --shadow-l:0 22px 48px -22px rgba(109,40,217,.32);
  --r-s:10px; --r-m:16px; --r-l:24px; --r-xl:32px; --r-full:999px;
  --sidebar-w:240px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han 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);background:var(--bg);color:var(--ink-2);
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;padding:0}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:8px}

/* ============ App Shell 侧栏 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);z-index:50;
  display:flex;flex-direction:column;
  padding:0 16px 16px;
  background:var(--grad) top left/100% 3px no-repeat, var(--white);
  border-right:1px solid var(--line);
  overflow-y:auto;overscroll-behavior:contain;
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(139,132,158,.42);border-radius:6px}
.sidebar::-webkit-scrollbar-track{background:transparent}
.brand{display:flex;align-items:center;gap:10px;padding:22px 4px 16px;border-bottom:1px solid var(--line);margin-bottom:18px}
.brand-mark{
  width:38px;height:38px;flex:none;border-radius:12px;background:var(--grad);
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px;
  box-shadow:var(--shadow-m);
}
.brand-text{font-size:16px;font-weight:800;color:var(--ink);line-height:1.25;letter-spacing:-.01em}
.brand-sub{display:block;font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.1em;margin-top:3px}
.side-nav{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;
  padding:0 12px;border-radius:12px;font-size:15px;color:var(--ink-2);
  transition:background .2s ease,color .2s ease,font-weight .2s ease;
}
.nav-item i{font-style:normal;font-size:10px;line-height:1;color:var(--brand-300);transition:color .2s ease}
.nav-item:hover{background:var(--bg-soft);color:var(--brand-600)}
.nav-item:hover i{color:var(--brand-500)}
.nav-item.is-active{background:var(--bg-soft);color:var(--brand-600);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--grad);
}
.nav-item.is-active i{color:var(--brand-500)}
.side-card{
  margin-top:auto;background:linear-gradient(150deg,#F5F0FF 0%,#FFF2EA 100%);
  border:1px solid var(--line);border-radius:var(--r-m);padding:14px;
  box-shadow:var(--shadow-s);
}
.side-card p{font-size:12px;line-height:1.7;color:var(--ink-2);margin-bottom:10px}
.side-card .btn-block-sm{
  display:block;width:100%;height:36px;line-height:36px;text-align:center;
  border-radius:10px;background:var(--grad);color:#fff;font-size:13px;font-weight:600;
  box-shadow:var(--shadow-s);transition:filter .2s ease,box-shadow .2s ease;
}
.side-card .btn-block-sm:hover{filter:brightness(1.06);box-shadow:var(--shadow-m)}
.side-copy{font-size:11px;line-height:1.7;color:var(--ink-3);padding:14px 4px 2px}

/* ============ 移动端顶栏与抽屉 ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:40;height:56px;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(255,255,255,.95);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease;
}
.topbar.is-scrolled{box-shadow:var(--shadow-s)}
.topbar .brand{padding:0;border:0;margin:0;gap:8px}
.topbar .brand-mark{width:32px;height:32px;font-size:15px;border-radius:10px}
.topbar .brand-text{font-size:15px}
.topbar .brand-sub{font-size:10px;letter-spacing:.06em}
.burger{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;color:var(--ink);transition:background .2s ease,color .2s ease}
.burger:hover{background:var(--bg-soft);color:var(--brand-600)}
.burger span{display:block;position:relative;width:20px;height:2px;border-radius:2px;background:currentColor}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:20px;height:2px;border-radius:2px;background:currentColor}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;max-width:86vw;z-index:70;
  background:var(--grad) top left/100% 3px no-repeat, var(--white);
  transform:translateX(-100%);transition:transform .24s ease-out;
  padding:16px;display:flex;flex-direction:column;overflow-y:auto;
  box-shadow:var(--shadow-l);
}
.drawer.is-open{transform:translateX(0)}
.drawer-close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;font-size:16px;color:var(--ink-3);
  background:var(--bg-soft);transition:background .2s ease,color .2s ease;
}
.drawer-close:hover{background:var(--brand-100);color:var(--brand-600)}
.drawer-overlay{
  position:fixed;inset:0;z-index:65;background:rgba(27,20,48,.45);
  opacity:0;pointer-events:none;transition:opacity .24s ease;
}
.drawer-overlay.is-open{opacity:1;pointer-events:auto}

/* ============ 主区域 ============ */
.main-wrap{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
.container-main{width:100%;max-width:1120px;margin:0 auto;padding:0 40px}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-3);padding:28px 0 18px}
.crumbs a{color:var(--ink-3)}
.crumbs a:hover{color:var(--brand-600)}
.crumbs .sep{color:#C9C2DA}
.crumbs .current{color:var(--brand-600);font-weight:600}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-full);background:var(--bg-soft);color:var(--brand-600);
  font-size:12px;font-weight:600;
}
.page-head{padding-bottom:36px}
.page-head h1{
  font-size:44px;line-height:1.2;font-weight:800;letter-spacing:-.02em;
  color:var(--ink);margin:14px 0 0;
}
.page-lead{font-size:17px;line-height:1.85;color:var(--ink-2);max-width:680px;margin:16px 0 18px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600)}
.link-arrow span{transition:transform .2s ease}
.link-arrow:hover{color:var(--accent-500)}
.link-arrow:hover span{transform:translateX(4px)}

/* ============ 通栏主图 21:9 ============ */
.visual{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  aspect-ratio:21/9;box-shadow:var(--shadow-m);margin-bottom:64px;background:var(--brand-800);
}
.visual img{width:100%;height:100%;object-fit:cover;object-position:center}
.visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(45deg,rgba(27,20,48,.82) 0%,rgba(27,20,48,.45) 46%,rgba(27,20,48,0) 80%);
}
.visual-caption{position:absolute;left:44px;right:44px;bottom:36px;z-index:2;max-width:660px;color:#fff}
.visual-caption .tag{background:rgba(255,255,255,.18);color:#fff;margin-bottom:12px}
.visual-caption h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.01em;margin-bottom:10px}
.visual-caption p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.88)}

/* ============ 板块通用 ============ */
.section{padding-bottom:80px}
.section-head{margin-bottom:32px;max-width:720px}
.title-bar{width:40px;height:4px;border-radius:2px;background:var(--grad);margin-bottom:14px}
.section-title{font-size:30px;line-height:1.3;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.section-desc{font-size:15px;line-height:1.85;color:var(--ink-2);margin-top:12px}

/* ============ 文本卡 2 列 ============ */
.paper-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.paper{
  position:relative;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-l);padding:28px;box-shadow:var(--shadow-s);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.paper:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--brand-300)}
.paper-num{font-size:13px;font-weight:800;letter-spacing:.16em;color:var(--brand-300)}
.paper-bar{width:32px;height:3px;border-radius:2px;background:var(--grad);margin:12px 0 16px}
.paper h3{font-size:21px;line-height:1.45;font-weight:700;color:var(--ink);margin-bottom:10px}
.paper p{font-size:15px;line-height:1.85;color:var(--ink-2)}
.paper ul{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.paper li{position:relative;padding-left:16px;font-size:14px;line-height:1.7;color:var(--ink-2)}
.paper li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--brand-500)}

/* ============ 观察方法 ============ */
.method{
  display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center;
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:40px;margin-bottom:80px;
}
.method figure{border-radius:var(--r-l);overflow:hidden;aspect-ratio:4/3;background:#fff;box-shadow:var(--shadow-m)}
.method figure img{width:100%;height:100%;object-fit:cover}
.method h2{font-size:28px;line-height:1.35;font-weight:700;color:var(--ink);letter-spacing:-.01em;margin-bottom:12px}
.method p{font-size:15px;line-height:1.85;color:var(--ink-2);max-width:600px}
.method-list{display:flex;flex-direction:column;gap:18px;margin-top:24px}
.method-item{display:flex;gap:14px;align-items:flex-start}
.step-dot{
  flex:none;width:30px;height:30px;border-radius:50%;background:var(--grad);
  color:#fff;font-size:13px;font-weight:700;display:grid;place-items:center;
  box-shadow:var(--shadow-s);
}
.method-item h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:4px;line-height:1.6}
.method-item p{font-size:14px;line-height:1.75;color:var(--ink-2);margin:0}

/* ============ 观察维度矩阵 ============ */
.dim-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.dim{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);
  padding:22px;box-shadow:var(--shadow-s);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.dim:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--brand-300)}
.dim .icon{
  width:38px;height:38px;border-radius:12px;background:var(--brand-50);
  color:var(--brand-600);display:grid;place-items:center;font-size:15px;font-weight:800;
  margin-bottom:14px;
}
.dim h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:6px;line-height:1.5}
.dim p{font-size:13px;line-height:1.7;color:var(--ink-3)}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start}
.faq-side h2{font-size:28px;line-height:1.35;font-weight:700;color:var(--ink);letter-spacing:-.01em;margin-bottom:12px}
.faq-side p{font-size:15px;line-height:1.8;color:var(--ink-2)}
.faq-list{background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-s);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 24px;text-align:left;font-size:16px;font-weight:600;
  color:var(--ink);line-height:1.6;transition:background .2s ease,color .2s ease;
}
.faq-q:hover{background:var(--brand-50);color:var(--brand-600)}
.faq-icon{
  flex:none;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;
  background:var(--bg-soft);color:var(--brand-600);font-size:16px;line-height:1;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--grad);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-item.is-open .faq-a{max-height:380px}
.faq-a p{padding:0 24px 20px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ============ CTA ============ */
.cta{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:linear-gradient(120deg,#F5F0FF 0%,#FFFFFF 100%);
  border:1px solid var(--line);box-shadow:var(--shadow-s);
  padding:48px;margin-bottom:80px;
  display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:center;
}
.cta::after{
  content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;
  border-radius:50%;background:var(--grad);opacity:.12;
}
.cta h2{font-size:28px;line-height:1.35;font-weight:700;color:var(--ink);letter-spacing:-.01em;margin-bottom:10px;position:relative;z-index:1}
.cta p{font-size:15px;line-height:1.8;color:var(--ink-2);max-width:520px;position:relative;z-index:1}
.cta-form{position:relative;z-index:1;display:flex;gap:10px;flex-wrap:wrap}
.input{
  width:100%;height:48px;border:1px solid var(--line);border-radius:12px;
  background:var(--white);padding:0 16px;font-size:15px;color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.input::placeholder{color:var(--ink-3)}
.input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(124,58,237,.15)}
.form-tip{font-size:12px;color:var(--ink-3);margin-top:10px;position:relative;z-index:1}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-m);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-m)}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.05);box-shadow:var(--shadow-l)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-s)}
.btn-ghost{background:var(--white);border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand-500);background:var(--bg-soft);color:var(--brand-600)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;margin-top:auto;padding:48px 0 24px;
  background:var(--white);border-top:1px solid var(--line);
}
.site-footer::before{content:"";position:absolute;top:0;left:0;width:120px;height:3px;background:var(--grad)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand .brand{padding:0;border:0;margin:0 0 14px}
.footer-brand p{font-size:13px;line-height:1.8;color:var(--ink-3);max-width:340px}
.footer-domain{
  display:inline-block;margin-top:12px;font-size:12px;color:var(--ink-3);
  letter-spacing:.04em;background:var(--bg-soft);border-radius:var(--r-full);padding:3px 12px;
}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px}
.footer-col a{display:block;font-size:13px;color:var(--ink-2);margin-bottom:10px}
.footer-col a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.footer-note{font-size:13px;line-height:1.7;color:var(--ink-3);margin-bottom:8px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:36px;padding-top:18px;
  font-size:12px;color:var(--ink-3);
}
.footer-bottom .disc{max-width:620px;line-height:1.7}

/* ============ 动效 ============ */
.fade-up{animation:fadeUp .26s cubic-bezier(.22,.61,.36,1) both}
.fade-up.d1{animation-delay:.06s}
.fade-up.d2{animation-delay:.12s}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sidebar-w:216px}
  .container-main{padding:0 32px}
  .page-head h1{font-size:40px}
  .visual-caption{left:32px;right:32px;bottom:28px}
  .paper-grid{gap:20px}
}
@media (max-width:1023px){
  .sidebar{display:none}
  .topbar{display:flex}
  .main-wrap{margin-left:0}
  .container-main{padding:0 24px}
  .page-head h1{font-size:34px}
  .visual{aspect-ratio:16/10;margin-bottom:48px;border-radius:var(--r-l)}
  .visual-caption{left:24px;right:24px;bottom:22px}
  .visual-caption h2{font-size:24px}
  .section{padding-bottom:56px}
  .method{grid-template-columns:1fr;padding:28px;gap:24px;margin-bottom:56px}
  .dim-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-wrap{grid-template-columns:1fr;gap:24px}
  .cta{grid-template-columns:1fr;padding:32px;margin-bottom:56px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .page-head h1{font-size:30px}
  .page-lead{font-size:16px}
  .section-title{font-size:24px}
  .method h2{font-size:22px}
  .faq-side h2{font-size:22px}
  .cta h2{font-size:22px}
  .paper-grid{grid-template-columns:1fr}
  .visual{aspect-ratio:4/3}
  .visual-caption{left:20px;right:20px;bottom:18px}
  .visual-caption h2{font-size:20px}
  .visual-caption p{font-size:14px}
  .dim-grid{grid-template-columns:1fr}
  .paper{padding:22px}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (max-width:519px){
  .container-main{padding:0 18px}
  .page-head h1{font-size:26px}
  .tag{font-size:11px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}
body.no-scroll{overflow:hidden}

/* roulang page: category4 */
:root{
  --brand-50:#F5F0FF; --brand-100:#EDE4FF; --brand-300:#B79BF5; --brand-500:#7C3AED; --brand-600:#6D28D9; --brand-800:#4C1D95;
  --accent-400:#FF9A6B; --accent-500:#FF7A45; --accent-600:#F2603A;
  --mint:#34D399; --sand:#FFD166;
  --ink:#1B1430; --ink-2:#5B5470; --ink-3:#8B849E;
  --line:#E8E2F2; --bg:#FBF8F3; --bg-soft:#F3EEFB; --white:#FFFFFF;
  --grad:linear-gradient(135deg,#6D28D9 0%,#A855F7 45%,#FF7A45 100%);
  --shadow-s:0 1px 2px rgba(27,20,48,.05);
  --shadow-m:0 10px 28px -14px rgba(109,40,217,.22);
  --shadow-l:0 22px 48px -22px rgba(109,40,217,.32);
  --r-s:10px; --r-m:16px; --r-l:24px; --r-xl:32px; --r-full:999px;
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em}
h2{font-size:30px;line-height:1.3;font-weight:700}
h3{font-size:21px;line-height:1.4;font-weight:600}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}

/* ---------- 布局骨架 ---------- */
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--white);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;overflow-y:auto;
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(139,132,158,.35);border-radius:6px}
.sidebar-top-line{height:3px;background:var(--grad);flex:0 0 auto}
.brand{display:flex;align-items:center;gap:10px;padding:0 20px;height:88px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:var(--r-m);background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800;flex:0 0 auto;
  box-shadow:var(--shadow-m);
}
.brand-text{font-size:16px;font-weight:800;color:var(--ink);line-height:1.25;letter-spacing:-.01em}
.brand-sub{display:block;font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.04em;margin-top:2px}
.side-nav{display:flex;flex-direction:column;gap:4px;padding:8px 14px 0}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
  border-radius:12px;color:var(--ink-2);font-size:15px;transition:background .2s,color .2s;
}
.nav-item i{font-style:normal;font-size:10px;color:var(--brand-300);flex:0 0 auto}
.nav-item:hover{background:var(--bg-soft);color:var(--brand-600)}
.nav-item.is-active{background:var(--bg-soft);color:var(--brand-600);font-weight:600}
.nav-item.is-active i{color:var(--brand-500)}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:var(--r-full);background:var(--grad);
}
.sidebar-bottom{margin-top:auto;padding:20px 14px 18px}
.sub-card{
  background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-m);
  padding:14px;margin-bottom:14px;
}
.sub-card p{font-size:13px;line-height:1.6;color:var(--ink-2);margin-bottom:10px}
.btn-mini{
  display:flex;align-items:center;justify-content:center;width:100%;height:38px;
  border-radius:var(--r-s);background:var(--grad);color:#fff;font-size:13px;font-weight:600;
  box-shadow:var(--shadow-m);transition:transform .2s,filter .2s;
}
.btn-mini:hover{transform:translateY(-1px);filter:brightness(1.05)}
.side-copy{font-size:11px;color:var(--ink-3);line-height:1.6;text-align:center}

.main{margin-left:var(--sidebar-w);min-height:100vh}
.container-main{max-width:1120px;margin:0 auto;padding:0 40px}

/* ---------- 移动端顶部栏与抽屉 ---------- */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:70;height:60px;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s;
}
.mobile-bar.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-s)}
.mobile-bar .brand{height:60px;padding:0}
.mobile-bar .brand-mark{width:32px;height:32px;font-size:15px;border-radius:12px}
.mobile-bar .brand-text{font-size:15px}
.drawer-toggle{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line);background:var(--white);color:var(--ink);
}
.drawer-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.drawer-toggle span::before,.drawer-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.drawer-toggle span::before{top:-6px}
.drawer-toggle span::after{top:6px}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(27,20,48,.45);z-index:80;
  opacity:0;transition:opacity .24s ease-out;
}
.drawer-mask.is-open{display:block;opacity:1}
.drawer-close{
  position:absolute;top:14px;right:12px;width:36px;height:36px;border-radius:10px;
  display:none;align-items:center;justify-content:center;color:var(--ink-2);border:1px solid var(--line);
  background:var(--white);font-size:16px;
}
body.is-locked{overflow:hidden}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);padding:32px 0 16px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--brand-600);font-weight:600}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--grad);padding:56px;color:#fff;box-shadow:var(--shadow-l);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.12) 1px,transparent 1px);
  background-size:32px 32px;opacity:.9;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr .9fr;gap:40px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-full);
  background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);
  font-size:12px;font-weight:600;letter-spacing:.04em;margin-bottom:18px;
}
.hero h1{font-size:44px;line-height:1.22;font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
.hero p{margin:0 0 26px;font-size:17px;line-height:1.75;max-width:34em;color:rgba(255,255,255,.9)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;
  border-radius:var(--r-m);background:var(--grad);color:#fff;font-weight:600;font-size:15px;
  box-shadow:var(--shadow-m);transition:transform .2s,box-shadow .2s,filter .2s;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-l);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-s)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  border-radius:var(--r-m);background:var(--white);border:1px solid var(--line);color:var(--ink);
  font-weight:600;font-size:15px;transition:background .2s,border-color .2s,color .2s,transform .2s;
}
.btn-ghost:hover{background:var(--bg-soft);border-color:var(--brand-300);color:var(--brand-600);transform:translateY(-1px)}
.hero-actions .btn-primary{background:#fff;color:var(--brand-600);background-image:none}
.hero-actions .btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5);color:#fff}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.24);color:#fff;border-color:#fff}
.hero-stats{display:flex;flex-wrap:wrap;gap:20px}
.hero-stat{display:flex;flex-direction:column;gap:2px;padding-left:14px;border-left:2px solid rgba(255,255,255,.45)}
.hero-stat b{font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stat span{font-size:12px;color:rgba(255,255,255,.82)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-l);
  border:8px solid rgba(255,255,255,.9);box-shadow:var(--shadow-l);
}
.hero-float{
  position:absolute;left:-20px;bottom:-18px;background:var(--white);color:var(--ink);
  border-radius:var(--r-m);padding:12px 16px;box-shadow:var(--shadow-m);border:1px solid var(--line);
  display:flex;align-items:center;gap:10px;font-size:13px;
}
.hero-float b{font-size:20px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums}
.dot{width:7px;height:7px;border-radius:50%;background:var(--mint);display:inline-block;flex:0 0 auto}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0 0}
.sec-head{max-width:720px;margin-bottom:32px}
.sec-bar{display:block;width:40px;height:4px;border-radius:var(--r-full);background:var(--grad);margin-bottom:14px}
.sec-head p{margin-top:12px;color:var(--ink-2);font-size:16px;line-height:1.8;max-width:44em}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.scene-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);
  padding:26px;box-shadow:var(--shadow-s);transition:transform .25s,box-shadow .25s;position:relative;overflow:hidden;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.scene-card::before{content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;border-radius:var(--r-full);background:var(--grad)}
.scene-card h3{margin-bottom:10px;padding-left:14px}
.scene-card p{padding-left:14px;color:var(--ink-2);font-size:15px;line-height:1.8;max-width:36em}
.scene-card .scene-link{display:inline-flex;align-items:center;gap:6px;margin:14px 0 0 14px;font-size:14px;font-weight:600;color:var(--brand-600)}
.scene-card .scene-link:hover{color:var(--accent-500)}
.scene-card .scene-link span{transition:transform .2s}
.scene-card .scene-link:hover span{transform:translateX(4px)}
.scene-col{display:flex;flex-direction:column;gap:24px;margin-top:32px}

/* ---------- 目录 + 步骤 ---------- */
.guide-layout{display:grid;grid-template-columns:216px minmax(0,1fr);gap:48px;align-items:start}
.toc{
  position:sticky;top:32px;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-l);padding:16px;box-shadow:var(--shadow-s);
}
.toc h4{font-size:12px;font-weight:700;color:var(--ink-3);letter-spacing:.08em;margin:4px 0 12px 12px}
.toc a{
  position:relative;display:block;padding:9px 12px;border-radius:var(--r-s);
  font-size:14px;color:var(--ink-2);transition:background .2s,color .2s;line-height:1.5;
}
.toc a:hover{background:var(--bg-soft);color:var(--brand-600)}
.toc a.is-current{background:var(--bg-soft);color:var(--brand-600);font-weight:600}
.toc a.is-current::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:var(--r-full);background:var(--grad);
}
.toc a em{font-style:normal;color:var(--ink-3);font-size:12px;margin-right:6px;font-variant-numeric:tabular-nums}
.toc a.is-current em{color:var(--brand-500)}

.steps{display:flex;flex-direction:column;gap:20px}
.step{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);
  padding:26px 28px;box-shadow:var(--shadow-s);scroll-margin-top:32px;
  transition:box-shadow .25s,border-color .25s;
}
.step:hover{box-shadow:var(--shadow-m);border-color:var(--brand-100)}
.step-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:14px}
.step-num{
  flex:0 0 auto;width:44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800;
  font-variant-numeric:tabular-nums;box-shadow:var(--shadow-m);
}
.step-head h3{font-size:20px;margin-bottom:2px}
.step-head .step-tag{font-size:12px;color:var(--ink-3)}
.step p{color:var(--ink-2);font-size:16px;line-height:1.85;max-width:64em}
.step p + p{margin-top:12px}
.step-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.step-list li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-2);line-height:1.75}
.step-list li::before{
  content:"";position:absolute;left:2px;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand-500);
}
.step-note{
  margin-top:16px;display:flex;gap:10px;align-items:flex-start;
  background:var(--bg-soft);border-radius:var(--r-m);padding:14px 16px;font-size:14px;color:var(--ink-2);line-height:1.75;
}
.step-note strong{color:var(--brand-600);font-weight:600;flex:0 0 auto}

/* ---------- 提醒条 ---------- */
.notice-band{
  margin-top:56px;border-radius:var(--r-l);background:var(--white);border:1px solid var(--line);
  padding:24px 28px;display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:center;box-shadow:var(--shadow-s);
}
.notice-band .nb-mark{
  width:48px;height:48px;border-radius:var(--r-m);background:var(--brand-50);border:1px solid var(--brand-100);
  display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--brand-600);font-weight:800;
}
.notice-band h3{font-size:17px;margin-bottom:6px}
.notice-band p{font-size:14px;color:var(--ink-2);line-height:1.8;max-width:60em}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start}
.faq-intro p{margin-top:12px;color:var(--ink-2);font-size:15px;line-height:1.8}
.faq-intro .faq-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:600;color:var(--brand-600)}
.faq-intro .faq-link:hover{color:var(--accent-500)}
.faq-list{background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-s);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);transition:background .2s,color .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--bg-soft);color:var(--brand-600)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--brand-600);
  transition:transform .2s ease-out,background .2s;background:var(--bg-soft);
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--brand-100)}
.faq-answer{padding:0 24px 22px;color:var(--ink-2);font-size:15px;line-height:1.85;max-width:62em}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;margin-top:72px;border-radius:var(--r-xl);
  background:linear-gradient(135deg,#F5F0FF 0%,#FFFFFF 62%);
  border:1px solid var(--brand-100);padding:48px 56px;box-shadow:var(--shadow-s);
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-70px;width:280px;height:280px;border-radius:50%;
  background:var(--grad);opacity:.12;
}
.cta-band h2{font-size:28px;margin-bottom:10px}
.cta-band p{color:var(--ink-2);font-size:15px;line-height:1.8;max-width:30em}
.cta-form{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}
.cta-form input{
  flex:1 1 240px;height:48px;padding:0 16px;border-radius:var(--r-m);
  border:1px solid var(--line);background:var(--white);font-size:15px;color:var(--ink);
  transition:border-color .2s,box-shadow .2s;
}
.cta-form input::placeholder{color:var(--ink-3)}
.cta-form input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(124,58,237,.15)}
.cta-form .btn-primary{flex:0 0 auto}
.cta-hint{width:100%;font-size:12px;color:var(--ink-3);margin-top:2px}

/* ---------- 页脚 ---------- */
.site-footer{margin-left:var(--sidebar-w);background:var(--white);border-top:1px solid var(--line);margin-top:80px;position:relative}
.site-footer::before{
  content:"";position:absolute;left:0;top:0;width:120px;height:3px;background:var(--grad);border-radius:0 0 var(--r-full) 0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:56px 0 40px}
.footer-brand .brand{padding:0;height:auto;margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--ink-2);line-height:1.8;max-width:32em}
.footer-domain{display:inline-block;margin-top:14px;font-size:12px;color:var(--ink-3);letter-spacing:.04em}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:var(--ink-2);padding:5px 0;transition:color .2s}
.footer-col a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px}
.footer-note{font-size:13px;color:var(--ink-3);line-height:1.8;margin-bottom:8px}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 32px;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:12px;color:var(--ink-3);line-height:1.7;
}
.footer-bottom .disc{max-width:62em}

/* ---------- 动效 ---------- */
.fade-up{animation:fadeUp .26s cubic-bezier(.22,.61,.36,1) both}
.fade-up.d2{animation-delay:.08s}
.fade-up.d3{animation-delay:.16s}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sidebar-w:216px}
  .container-main{padding:0 32px}
  .hero{padding:48px}
  .hero h1{font-size:40px}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px}
}
@media (max-width:1023px){
  .main,.site-footer{margin-left:0}
  .sidebar{
    width:280px;transform:translateX(-100%);transition:transform .24s ease-out;
    box-shadow:var(--shadow-l);z-index:90;
  }
  .sidebar.is-open{transform:translateX(0)}
  .drawer-close{display:flex}
  .mobile-bar{display:flex}
  .container-main{padding:0 24px}
  .hero{padding:40px 32px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:34px}
  .hero-media img{aspect-ratio:16/9}
  .hero-float{left:12px;bottom:-14px}
  .guide-layout{grid-template-columns:1fr;gap:28px}
  .toc{position:static;padding:12px}
  .toc h4{display:none}
  .toc-list{display:flex;gap:8px;overflow-x:auto;padding:2px}
  .toc a{white-space:nowrap;border:1px solid var(--line);border-radius:var(--r-full);padding:8px 14px;font-size:13px}
  .toc a.is-current::before{display:none}
  .scene-grid{grid-template-columns:1fr}
  .scene-col{margin-top:0}
  .faq-wrap{grid-template-columns:1fr;gap:24px}
  .cta-band{grid-template-columns:1fr;padding:36px 32px;gap:24px}
  .notice-band{grid-template-columns:1fr}
  .step{padding:22px}
}
@media (max-width:767px){
  .container-main{padding:0 20px}
  .section{padding:48px 0 0}
  h2{font-size:23px}
  .hero{padding:32px 22px;border-radius:var(--r-l)}
  .hero h1{font-size:28px;line-height:1.3}
  .hero p{font-size:16px}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%}
  .hero-stats{gap:14px}
  .hero-stat b{font-size:19px}
  .step-head{flex-direction:row;gap:12px}
  .step-num{width:38px;height:38px;font-size:15px}
  .step-head h3{font-size:18px}
  .step p{font-size:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:40px 0 28px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band{padding:28px 22px;border-radius:var(--r-l)}
  .cta-form .btn-primary{width:100%}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-answer{padding:0 18px 18px}
  .notice-band{padding:20px}
}
@media (max-width:519px){
  .hero-stat{padding-left:10px}
  .scene-card{padding:20px}
  .step{padding:20px 18px}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category5 */
:root{
    --brand-50:#F5F0FF; --brand-100:#EDE4FF; --brand-300:#B79BF5;
    --brand-500:#7C3AED; --brand-600:#6D28D9; --brand-800:#4C1D95;
    --accent-400:#FF9A6B; --accent-500:#FF7A45; --accent-600:#F2603A;
    --mint:#34D399; --sand:#FFD166;
    --ink:#1B1430; --ink-2:#5B5470; --ink-3:#8B849E;
    --line:#E8E2F2; --bg:#FBF8F3; --bg-soft:#F3EEFB; --white:#FFFFFF;
    --grad:linear-gradient(135deg,#6D28D9 0%,#A855F7 45%,#FF7A45 100%);
    --shadow-s:0 1px 2px rgba(27,20,48,.05);
    --shadow-m:0 10px 28px -14px rgba(109,40,217,.22);
    --shadow-l:0 22px 48px -22px rgba(109,40,217,.32);
    --r-s:10px; --r-m:16px; --r-l:24px; --r-xl:32px;
    --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  }
  html,body{margin:0;padding:0}
  html body{
    font-family:var(--font);
    background:var(--bg);
    color:var(--ink-2);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  html *{box-sizing:border-box}
  html img{max-width:100%;display:block}
  html a{color:var(--brand-600);text-decoration:none;text-underline-offset:3px;transition:color .2s ease}
  html a:hover{color:var(--accent-500)}
  html button{font-family:var(--font);cursor:pointer}
  html h1,html h2,html h3,html h4{color:var(--ink);margin:0;font-weight:700}
  html p{margin:0}
  html ul,html ol{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}

  .top-line{position:fixed;top:0;left:0;right:0;height:3px;background:var(--grad);z-index:120}

  /* ============ 侧栏 ============ */
  .sidebar{
    position:fixed;top:0;left:0;width:240px;height:100vh;
    background:var(--white);border-right:1px solid var(--line);
    display:flex;flex-direction:column;
    padding-bottom:18px;z-index:100;overflow-y:auto;
  }
  .sidebar::before{content:"";display:block;height:3px;background:var(--grad);flex:0 0 auto}
  .sidebar::-webkit-scrollbar{width:6px}
  .sidebar::-webkit-scrollbar-thumb{background:rgba(139,132,158,.4);border-radius:999px}
  .brand-area{height:88px;display:flex;align-items:center;padding:0 18px;gap:10px;flex:0 0 auto}
  .brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
  .brand:hover{color:var(--ink)}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;
    display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;
    box-shadow:var(--shadow-m);flex:0 0 auto;
  }
  .brand-text{font-size:16px;font-weight:800;color:var(--ink);line-height:1.25;letter-spacing:-.01em;display:flex;flex-direction:column}
  .brand-sub{font-size:11px;font-weight:400;color:var(--ink-3);letter-spacing:.06em}
  .side-nav{padding:4px 12px;display:flex;flex-direction:column;gap:4px}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:10px;
    height:44px;padding:0 14px;border-radius:12px;
    font-size:15px;color:var(--ink-2);transition:background .2s ease,color .2s ease;
  }
  .nav-item i{font-style:normal;font-size:10px;color:var(--brand-300);line-height:1}
  .nav-item:hover{background:var(--bg-soft);color:var(--brand-600)}
  .nav-item.is-active{background:var(--bg-soft);color:var(--brand-600);font-weight:600}
  .nav-item.is-active::before{
    content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
    border-radius:999px;background:var(--grad);
  }
  .nav-item.is-active i{color:var(--brand-600)}
  .side-sep{height:1px;background:var(--line);margin:18px 20px}
  .side-card{
    margin:0 14px;padding:16px;border-radius:var(--r-m);
    background:linear-gradient(150deg,#F5F0FF 0%,#FFFFFF 70%);
    border:1px solid var(--line);
  }
  .side-card p{font-size:13px;line-height:1.7;color:var(--ink-2);margin-bottom:12px}
  .side-card .btn-mini{display:block;text-align:center;width:100%}
  .side-copy{margin:16px 20px 0;font-size:11px;color:var(--ink-3);line-height:1.7}

  /* ============ 主区 ============ */
  .main-shell{margin-left:240px;min-height:100vh}
  .container-main{max-width:1120px;margin:0 auto;padding:0 40px}
  .topbar{display:none}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--r-m);
    font-size:15px;font-weight:600;border:1px solid transparent;
    transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
    text-decoration:none;cursor:pointer;
  }
  .btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-m)}
  .btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-l);filter:brightness(1.05);color:#fff}
  .btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-s)}
  .btn-ghost{background:var(--white);color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-s)}
  .btn-ghost:hover{background:var(--bg-soft);border-color:var(--brand-500);color:var(--brand-600)}
  .btn-on-grad{background:#fff;color:var(--brand-600);box-shadow:var(--shadow-m)}
  .btn-on-grad:hover{color:var(--brand-800);transform:translateY(-1px);box-shadow:var(--shadow-l)}
  .btn-line-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
  .btn-line-light:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff}
  .btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);height:auto;padding:0}
  .btn-text span{transition:transform .2s ease}
  .btn-text:hover{color:var(--accent-500)}
  .btn-text:hover span{transform:translateX(4px)}
  .btn-mini{height:38px;padding:0 16px;border-radius:12px;font-size:13px;font-weight:600;background:var(--grad);color:#fff;border:none;display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--shadow-s);transition:filter .2s ease,transform .2s ease}
  .btn-mini:hover{filter:brightness(1.06);transform:translateY(-1px);color:#fff}

  /* ============ 通用组件 ============ */
  .chip{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;
    border-radius:999px;background:var(--bg-soft);color:var(--brand-600);
    font-size:11px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
  }
  .bar{width:40px;height:4px;border-radius:999px;background:var(--grad);margin-bottom:12px}
  .card{
    background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);
    box-shadow:var(--shadow-s);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  }
  .card-lift:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
  .sec{padding:56px 0 0}
  .sec-head{max-width:720px}
  .sec-title{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
  .sec-desc{font-size:16px;line-height:1.85;color:var(--ink-2);margin-top:12px;max-width:70ch}

  /* ============ 面包屑 ============ */
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:16px;flex-wrap:wrap}
  .crumb a{color:var(--ink-3)}
  .crumb a:hover{color:var(--brand-600)}
  .crumb .sep{color:var(--line)}
  .crumb .cur{color:var(--brand-600);font-weight:600}

  /* ============ Hero ============ */
  .hero{
    position:relative;overflow:hidden;border-radius:var(--r-xl);
    background:var(--grad);padding:56px 48px;margin-top:32px;
    box-shadow:var(--shadow-l);
  }
  .hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(255,255,255,.12) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(255,255,255,.12) 1px,transparent 1px);
    background-size:32px 32px;opacity:.85;
  }
  .hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center}
  .hero .crumb{color:rgba(255,255,255,.78)}
  .hero .crumb a{color:rgba(255,255,255,.78)}
  .hero .crumb a:hover{color:#fff}
  .hero .crumb .sep{color:rgba(255,255,255,.45)}
  .hero .crumb .cur{color:#fff}
  .hero-title{font-size:44px;line-height:1.18;font-weight:800;letter-spacing:-.02em;color:#fff}
  .hero-sub{font-size:17px;line-height:1.85;color:rgba(255,255,255,.9);margin-top:16px;max-width:34em}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .hero-visual{position:relative}
  .hero-visual img{
    width:100%;aspect-ratio:16/10;object-fit:cover;
    border-radius:var(--r-l);border:8px solid rgba(255,255,255,.22);
    box-shadow:var(--shadow-l);
  }
  .hero-float{
    position:absolute;left:-24px;bottom:-24px;
    background:#fff;border-radius:var(--r-m);padding:14px 18px;
    box-shadow:var(--shadow-l);display:flex;align-items:center;gap:12px;min-width:200px;
  }
  .hero-float .dot{width:8px;height:8px;border-radius:999px;background:var(--mint);box-shadow:0 0 0 4px rgba(52,211,153,.18);flex:0 0 auto}
  .hero-float strong{display:block;font-size:15px;color:var(--ink);font-weight:800;font-variant-numeric:tabular-nums}
  .hero-float span{display:block;font-size:12px;color:var(--ink-3);line-height:1.5}

  /* ============ 信息卡两列 ============ */
  .info-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
  .panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-s);overflow:hidden}
  .panel-media{position:relative}
  .panel-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
  .panel-media .tag-on-img{position:absolute;left:16px;top:16px}
  .panel-body{padding:26px}
  .panel-title{font-size:21px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
  .panel-lead{font-size:14px;line-height:1.8;color:var(--ink-2);margin-top:8px}
  .list-check{margin-top:20px;display:flex;flex-direction:column;gap:14px}
  .list-check li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.75;color:var(--ink-2)}
  .list-check li::before{
    content:"";flex:0 0 auto;width:18px;height:18px;margin-top:5px;border-radius:6px;
    background:var(--brand-100);
    background-image:linear-gradient(135deg,#6D28D9,#FF7A45);
    -webkit-mask:radial-gradient(circle at 50% 50%,#000 0 100%);
    opacity:.85;
  }
  .list-check li b{color:var(--ink);font-weight:600}
  .status-list{display:flex;flex-direction:column;gap:0;margin-top:20px}
  .status-item{display:flex;gap:14px;padding:16px 0;border-top:1px solid var(--line)}
  .status-item:first-child{border-top:none;padding-top:0}
  .status-item:last-child{padding-bottom:0}
  .status-dot{width:8px;height:8px;border-radius:999px;background:var(--mint);margin-top:9px;flex:0 0 auto;box-shadow:0 0 0 4px rgba(52,211,153,.16)}
  .status-dot.warm{background:var(--accent-500);box-shadow:0 0 0 4px rgba(255,122,69,.16)}
  .status-item h4{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:2px}
  .status-item p{font-size:14px;line-height:1.75;color:var(--ink-2)}

  /* ============ 流程 ============ */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:32px}
  .step{padding:24px 20px;border-radius:var(--r-l);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-s);transition:transform .25s ease,box-shadow .25s ease}
  .step:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
  .step-num{
    width:40px;height:40px;border-radius:999px;background:var(--grad);color:#fff;
    display:flex;align-items:center;justify-content:center;
    font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;box-shadow:var(--shadow-m);
  }
  .step h3{font-size:17px;font-weight:600;color:var(--ink);margin-top:16px}
  .step p{font-size:14px;line-height:1.8;color:var(--ink-2);margin-top:8px}

  /* ============ FAQ ============ */
  .faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start;margin-top:32px}
  .faq-aside p{font-size:15px;line-height:1.85;color:var(--ink-2);margin-top:12px;max-width:24em}
  .acc{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-s);overflow:hidden}
  .acc-item{border-top:1px solid var(--line)}
  .acc-item:first-child{border-top:none}
  .acc-btn{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:64px;padding:16px 24px;background:transparent;border:none;text-align:left;
    font-size:16px;font-weight:600;color:var(--ink);transition:color .2s ease;
  }
  .acc-btn:hover{color:var(--brand-600)}
  .acc-icon{
    flex:0 0 auto;width:26px;height:26px;border-radius:999px;background:var(--bg-soft);color:var(--brand-600);
    display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
    transition:transform .2s ease,background .2s ease,color .2s ease;line-height:1;
  }
  .acc-item.is-open .acc-icon{transform:rotate(45deg);background:var(--brand-500);color:#fff}
  .acc-panel{max-height:0;overflow:hidden;transition:max-height .24s ease}
  .acc-panel-inner{padding:0 24px 20px;font-size:15px;line-height:1.85;color:var(--ink-2)}

  /* ============ 表单 ============ */
  .form-grid{display:grid;grid-template-columns:8fr 4fr;gap:24px;align-items:start;margin-top:32px}
  .form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-m);padding:28px}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .field{margin-bottom:20px}
  .field:last-of-type{margin-bottom:0}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:8px;letter-spacing:.01em}
  .req{color:var(--accent-500);margin-left:2px}
  .field input,.field select,.field textarea{
    width:100%;height:48px;padding:0 14px;border-radius:12px;
    border:1px solid var(--line);background:var(--white);color:var(--ink);
    font-size:15px;font-family:var(--font);line-height:1.6;
    transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  }
  .field textarea{height:auto;min-height:132px;padding:12px 14px;resize:vertical;line-height:1.8}
  .field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
  .field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238B849E' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(124,58,237,.15);
  }
  .field .hint{font-size:12px;color:var(--ink-3);margin-top:6px;line-height:1.6}
  .field.invalid input,.field.invalid select,.field.invalid textarea{border-color:#E5484D}
  .field .err{display:none;font-size:12px;color:#E5484D;margin-top:6px}
  .field.invalid .err{display:block}
  .form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}
  .form-note{font-size:12px;color:var(--ink-3);line-height:1.7;max-width:30em}
  .form-alert{
    display:none;margin-top:18px;padding:14px 16px;border-radius:var(--r-m);
    background:rgba(52,211,153,.1);border:1px solid rgba(52,211,153,.4);
    color:#17795E;font-size:14px;line-height:1.7;
  }
  .form-alert.show{display:block}
  .aside-card{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--r-l);padding:24px}
  .aside-card h4{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:10px}
  .aside-card p{font-size:14px;line-height:1.8;color:var(--ink-2)}
  .aside-item{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink-2);line-height:1.7;padding:12px 0;border-top:1px dashed var(--line)}
  .aside-item:first-of-type{border-top:none;padding-top:4px}
  .aside-item b{color:var(--ink);font-weight:600;display:block;font-size:14px}
  .aside-warn{font-size:12px;color:var(--ink-3);line-height:1.7;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--white);border-top:1px solid var(--line);margin-top:80px;padding-top:44px}
  .site-footer::before{content:"";display:block;width:64px;height:3px;border-radius:999px;background:var(--grad);margin:0 auto 0}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px;padding-top:32px}
  .footer-brand p{font-size:13px;line-height:1.8;color:var(--ink-2);margin-top:14px;max-width:30em}
  .footer-domain{display:inline-block;margin-top:12px;font-size:12px;color:var(--ink-3);letter-spacing:.04em}
  .footer-col h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:12px}
  .footer-col a{display:block;font-size:14px;color:var(--ink-2);padding:5px 0;text-decoration:none}
  .footer-col a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px}
  .footer-note{font-size:13px;line-height:1.75;color:var(--ink-2);padding:4px 0}
  .footer-bottom{
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
    border-top:1px solid var(--line);margin-top:32px;padding:20px 0 30px;
    font-size:12px;color:var(--ink-3);line-height:1.7;
  }
  .footer-bottom .disc{max-width:52em}

  /* ============ 移动端顶部栏与抽屉 ============ */
  .topbar{
    display:none;position:sticky;top:0;z-index:90;height:60px;
    background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
    border-bottom:1px solid transparent;align-items:center;justify-content:space-between;
    padding:0 16px;transition:box-shadow .2s ease,border-color .2s ease;
  }
  .topbar.is-scrolled{border-color:var(--line);box-shadow:var(--shadow-s)}
  .topbar .brand-mark{width:34px;height:34px;font-size:16px;border-radius:10px}
  .topbar .brand-text{font-size:15px}
  .burger{
    width:44px;height:44px;border-radius:12px;background:var(--bg-soft);border:1px solid var(--line);
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  }
  .burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-600);transition:transform .2s ease,opacity .2s ease}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(27,20,48,.45);opacity:0;visibility:hidden;
    transition:opacity .24s ease,visibility .24s ease;z-index:130;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;left:0;bottom:0;width:280px;max-width:86vw;background:#fff;z-index:140;
    transform:translateX(-100%);transition:transform .24s ease-out;
    display:flex;flex-direction:column;overflow-y:auto;box-shadow:var(--shadow-l);
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--line)}
  .drawer-close{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--white);
    font-size:18px;color:var(--ink-2);display:flex;align-items:center;justify-content:center;
  }
  .drawer-close:hover{background:var(--bg-soft);color:var(--brand-600)}
  .drawer .side-nav{padding:14px 12px}
  .drawer-foot{margin-top:auto;padding:16px;border-top:1px solid var(--line);font-size:11px;color:var(--ink-3);line-height:1.7}

  /* ============ 动效 ============ */
  .fade-up{opacity:0;transform:translateY(12px);animation:fadeUp .26s cubic-bezier(.22,.61,.36,1) forwards}
  .fade-up.d1{animation-delay:.06s}
  .fade-up.d2{animation-delay:.12s}
  .fade-up.d3{animation-delay:.18s}
  @keyframes fadeUp{to{opacity:1;transform:translateY(0)}}

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .sidebar{width:216px}
    .main-shell{margin-left:216px}
    .container-main{padding:0 32px}
    .hero{padding:48px 40px}
    .hero-title{font-size:38px}
  }
  @media (max-width:1023px){
    .sidebar{display:none}
    .main-shell{margin-left:0}
    .topbar{display:flex}
    .hero{margin-top:24px;padding:36px 28px;border-radius:var(--r-l)}
    .hero-inner{grid-template-columns:1fr;gap:28px}
    .hero-title{font-size:32px}
    .hero-float{position:static;margin-top:16px;left:auto;bottom:auto}
    .info-grid{grid-template-columns:1fr}
    .steps{grid-template-columns:1fr 1fr}
    .faq-grid{grid-template-columns:1fr;gap:24px}
    .form-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr}
  }
  @media (max-width:767px){
    html body{font-size:16px}
    .container-main{padding:0 20px}
    .sec{padding:44px 0 0}
    .sec-title{font-size:23px}
    .hero-title{font-size:28px}
    .hero-sub{font-size:16px}
    .hero{padding:28px 20px}
    .hero-visual img{border-width:6px}
    .hero-actions .btn{width:100%}
    .panel-body,.form-card{padding:20px}
    .step{padding:20px 18px}
    .form-row{grid-template-columns:1fr;gap:0}
    .footer-grid{grid-template-columns:1fr;gap:24px}
    .footer-bottom{flex-direction:column}
    .acc-btn{padding:14px 18px;font-size:15px}
    .acc-panel-inner{padding:0 18px 16px}
    .site-footer{margin-top:56px}
  }
  @media (max-width:520px){
    .steps{grid-template-columns:1fr}
    .btn{height:48px}
    .form-foot{flex-direction:column;align-items:stretch}
    .form-foot .btn{width:100%}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation:none !important;transition:none !important}
  }