/* roulang page: index */
:root{
  --bg:#FAF8F4;
  --surface:#FFFFFF;
  --dark:#14112A;
  --ink:#171528;
  --ink-2:#5A5570;
  --ink-3:#8B8699;
  --brand:#2E2560;
  --brand-600:#453A8C;
  --brand-soft:#EDE9F7;
  --accent:#C9973F;
  --accent-soft:#F6EEDD;
  --aurora:#3C8F86;
  --success:#2F7D63;
  --warn:#C2703A;
  --danger:#B4433A;
  --line:#E6E2DC;
  --radius-card:4px;
  --radius-btn:2px;
  --shadow-sm:0 1px 2px rgba(23,21,40,.04);
  --shadow-hover:0 14px 36px -14px rgba(23,21,40,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:220px;
}
*,*::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:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}

/* ---------- 容器与布局 ---------- */
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.shell{max-width:1280px}}
@media (max-width:520px){.shell{padding:0 20px}}
.layout{padding-left:0}
@media (min-width:1024px){.layout{padding-left:var(--nav-w)}}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{display:none}
@media (min-width:1024px){
  .sidenav{
    display:flex;position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
    background:var(--brand);color:#fff;flex-direction:column;
    padding:32px 0 28px;z-index:60;
  }
}
.sidenav::after{
  content:"";position:absolute;right:0;top:0;bottom:0;width:1px;
  background:rgba(255,255,255,.08);
}
.brand{display:flex;align-items:center;gap:10px;padding:0 26px;color:#fff}
.brand-mark{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid rgba(201,151,63,.55);border-radius:2px;color:var(--accent);flex:0 0 34px}
.brand-name{font-size:19px;font-weight:800;letter-spacing:.06em;line-height:1}
.brand-kicker{display:block;margin-top:6px;font-size:11px;letter-spacing:.14em;color:rgba(255,255,255,.55);font-weight:400}
.sidenav-brand{padding:0 26px 26px;border-bottom:1px solid rgba(255,255,255,.08)}
.sidenav-nav{margin-top:26px;display:flex;flex-direction:column;gap:2px;padding:0 14px}
.sidenav-link{
  position:relative;display:flex;align-items:center;gap:11px;
  height:46px;padding:0 14px;border-radius:2px;
  color:rgba(255,255,255,.72);font-size:14px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.sidenav-link .dot{width:6px;height:6px;flex:0 0 6px;border:1px solid rgba(255,255,255,.45);border-radius:1px;transition:.2s var(--ease)}
.sidenav-link:hover{background:rgba(255,255,255,.07);color:#fff}
.sidenav-link:hover .dot{border-color:var(--accent);background:var(--accent)}
.sidenav-link.is-active{background:rgba(255,255,255,.1);color:#fff;font-weight:600}
.sidenav-link.is-active::before{content:"";position:absolute;left:-14px;top:10px;bottom:10px;width:3px;background:var(--accent)}
.sidenav-link.is-active .dot{border-color:var(--accent);background:var(--accent)}
.sidenav-foot{margin-top:auto;padding:0 26px}
.sidenav-note{font-size:12px;line-height:1.7;color:rgba(255,255,255,.42);margin-bottom:16px}
.sidenav-cta{
  display:flex;align-items:center;justify-content:center;height:46px;
  border:1px solid var(--accent);border-radius:var(--radius-btn);
  color:var(--accent);font-size:14px;font-weight:600;letter-spacing:.04em;
  transition:.2s var(--ease);
}
.sidenav-cta:hover{background:var(--accent);color:var(--dark)}

/* ---------- 移动端顶栏与抽屉 ---------- */
.mobbar{
  position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 20px;background:var(--bg);border-bottom:1px solid var(--line);
}
@media (min-width:1024px){.mobbar{display:none}}
.mobbar .brand{padding:0;color:var(--ink)}
.mobbar .brand-mark{width:28px;height:28px;flex:0 0 28px;border-color:var(--brand-soft);color:var(--brand)}
.mobbar .brand-name{font-size:17px;color:var(--ink)}
.burger{width:40px;height:40px;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:0 9px;background:none;border:0;cursor:pointer}
.burger span{display:block;height:2px;background:var(--ink);border-radius:1px;transition:.2s var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.overlay{position:fixed;inset:0;background:rgba(20,17,42,.45);opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:70}
.overlay.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;background:var(--surface);
  z-index:80;display:flex;flex-direction:column;transform:translateX(100%);
  transition:transform .24s var(--ease);
}
.drawer.is-open{transform:none}
.drawer-head{padding:22px 22px 18px;border-bottom:1px solid var(--line)}
.drawer-head strong{display:block;font-size:16px;font-weight:700}
.drawer-head span{display:block;margin-top:4px;font-size:12px;color:var(--ink-3);letter-spacing:.08em}
.drawer-nav{flex:1;overflow-y:auto;padding:8px 0}
.drawer-link{display:flex;align-items:center;justify-content:space-between;height:48px;padding:0 22px;font-size:15px;color:var(--ink);border-bottom:1px solid var(--line);transition:.2s var(--ease)}
.drawer-link:hover,.drawer-link.is-active{background:var(--brand-soft);color:var(--brand)}
.drawer-link .arrow{color:var(--ink-3);font-size:14px}
.drawer-foot{padding:18px 22px 26px;border-top:1px solid var(--line)}

/* ---------- 按钮体系 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;
  border:1px solid transparent;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(46,37,96,.6)}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:var(--brand-soft)}
.btn-accent{border-color:var(--accent);color:var(--brand);background:var(--accent-soft)}
.btn-accent:hover{background:var(--accent);color:#fff;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;filter:saturate(.4);pointer-events:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);border-bottom:1px solid transparent;transition:.2s var(--ease)}
.link-more:hover{border-bottom-color:var(--accent);color:var(--brand-600)}
.link-more .arrow{transition:transform .2s var(--ease)}
.link-more:hover .arrow{transform:translateX(4px)}

/* ---------- 标签 ---------- */
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:2px;font-size:12px;font-weight:600;letter-spacing:.04em;background:var(--brand-soft);color:var(--brand)}
.tag-accent{background:var(--accent-soft);color:#8A6520}
.tag-aurora{background:rgba(60,143,134,.12);color:var(--aurora)}
.pill{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;background:var(--accent);color:#fff;letter-spacing:.04em}

/* ---------- 区块 ---------- */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.band{background:var(--bg)}
.band-alt{background:var(--surface)}
.section-head{max-width:760px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand)}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent)}
.section-title{margin-top:14px;font-size:24px;line-height:1.34;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
@media (min-width:1024px){.section-title{font-size:32px;line-height:1.26}}
.section-desc{margin-top:14px;font-size:16px;line-height:1.75;color:var(--ink-2)}
.section-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px}

/* ---------- Hero ---------- */
.hero{padding:44px 0 56px;position:relative;overflow:hidden}
@media (min-width:1024px){.hero{padding:72px 0 88px}}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(46,37,96,.05) 1px, transparent 1px);
  background-size:22px 22px;
}
.hero-inner{position:relative;z-index:1}
.hero-title{margin-top:18px;font-size:34px;line-height:1.24;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
@media (min-width:1024px){.hero-title{font-size:52px;line-height:1.14}}
.hero-sub{margin-top:20px;font-size:16px;line-height:1.8;color:var(--ink-2);max-width:620px}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-media{position:relative;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--surface);box-shadow:var(--shadow-sm)}
.hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.hero-media-cap{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;
  background:linear-gradient(to top, rgba(20,17,42,.72), rgba(20,17,42,0));
  color:#fff;font-size:13px;letter-spacing:.04em;
}
.metrics{display:grid;grid-template-columns:1fr;margin-top:40px;border-top:1px solid var(--line);padding-top:24px}
@media (min-width:640px){.metrics{grid-template-columns:repeat(3,1fr)}}
.metric{padding:0 0 14px}
@media (min-width:640px){
  .metric{padding:0 28px}
  .metric:first-child{padding-left:0}
  .metric + .metric{border-left:1px solid var(--line)}
}
.metric-num{font-size:28px;font-weight:800;letter-spacing:-.02em;color:var(--brand);line-height:1.2}
@media (min-width:1024px){.metric-num{font-size:32px}}
.metric-label{margin-top:6px;font-size:13px;color:var(--ink-2);letter-spacing:.02em}

/* ---------- 卡片 ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#D9D4CC}
.card-media{overflow:hidden;background:var(--brand-soft)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.ratio-16-9{aspect-ratio:16/9}
.ratio-3-2{aspect-ratio:3/2}
.ratio-4-3{aspect-ratio:4/3}
.card-body{padding:22px}
.card-title{font-size:18px;line-height:1.44;font-weight:700;letter-spacing:-.01em;color:var(--ink);transition:color .2s var(--ease)}
.card:hover .card-title{color:var(--brand-600)}
.card-text{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-2)}
.card-price{margin-top:18px;display:flex;align-items:baseline;gap:8px}
.card-price strong{font-size:22px;font-weight:800;color:var(--accent);letter-spacing:-.01em}
.card-price span{font-size:13px;color:var(--ink-3)}
.card-actions{margin-top:20px;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.check-list{margin-top:16px;display:flex;flex-direction:column;gap:11px}
.check-list li{position:relative;padding-left:24px;font-size:14px;line-height:1.65;color:var(--ink-2)}
.check-list li::before{
  content:"";position:absolute;left:1px;top:6px;width:12px;height:7px;
  border-left:2px solid var(--success);border-bottom:2px solid var(--success);transform:rotate(-45deg);
}
.card-flat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-sm);transition:box-shadow .2s var(--ease),transform .2s var(--ease)}
.card-flat:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.card-flat h3{font-size:17px;line-height:1.44;font-weight:700;color:var(--ink)}
.card-flat p{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-2)}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:0;margin-top:8px}
@media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr);gap:24px}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step{position:relative;padding:26px 0 0;border-top:1px solid var(--line)}
@media (min-width:768px){.step{border-top:0;padding:0 0 0 22px;border-left:1px solid var(--line)}}
@media (min-width:1024px){.step{padding:0 0 0 24px}}
.step-num{font-size:34px;font-weight:800;line-height:1;letter-spacing:-.03em;color:var(--brand-soft);-webkit-text-stroke:1px var(--brand)}
.step h3{margin-top:14px;font-size:17px;font-weight:700;color:var(--ink)}
.step p{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-2)}

/* ---------- 保障条 ---------- */
.guard{background:var(--dark);color:#fff;padding:40px 0}
@media (min-width:1024px){.guard{padding:44px 0}}
.guard-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0}
@media (min-width:1024px){.guard-grid{grid-template-columns:repeat(4,1fr)}}
.guard-item{padding:18px 20px;border-top:1px solid rgba(255,255,255,.1)}
.guard-item:nth-child(-n+2){border-top:0}
@media (min-width:1024px){
  .guard-item{border-top:0;border-left:1px solid rgba(255,255,255,.1);padding:4px 26px}
  .guard-item:first-child{border-left:0;padding-left:0}
}
.guard-item h3{font-size:15px;font-weight:700;letter-spacing:.02em;color:#fff;display:flex;align-items:center;gap:9px}
.guard-item h3::before{content:"";width:8px;height:8px;flex:0 0 8px;background:var(--accent);border-radius:1px}
.guard-item p{margin-top:9px;font-size:12px;line-height:1.7;color:rgba(255,255,255,.55)}

/* ---------- 评价轮播 ---------- */
.rail-wrap{position:relative;margin-top:34px}
.rail{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.rail>article{scroll-snap-align:start;flex:0 0 340px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-sm)}
@media (max-width:640px){.rail>article{flex:0 0 82%}}
.rail-arrow{
  width:36px;height:36px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  color:var(--brand);display:none;align-items:center;justify-content:center;cursor:pointer;
  transition:.2s var(--ease);
}
.rail-arrow:hover{border-color:var(--brand);background:var(--brand-soft)}
@media (min-width:1024px){.rail-arrows{display:flex;gap:10px}}
.avatar{width:40px;height:40px;border-radius:999px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex:0 0 40px}
.stars{color:var(--accent);font-size:13px;letter-spacing:2px;line-height:1}
.rail-progress{margin-top:16px;display:flex;gap:6px}
.rail-progress i{display:block;width:22px;height:2px;background:var(--line);border-radius:1px}
.rail-progress i.on{background:var(--accent)}

/* ---------- 内容列表 ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-top:34px}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1280px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-meta{margin-top:14px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);letter-spacing:.02em}
.news-meta .sep{width:1px;height:12px;background:var(--line)}
.news-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-text{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  margin-top:34px;border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;background:var(--surface);
}
.empty-state .icon{width:44px;height:44px;margin:0 auto 16px;border:1px solid var(--line);border-radius:999px;display:flex;align-items:center;justify-content:center;color:var(--ink-3)}
.empty-state p{font-size:14px;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq-list{margin-top:8px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 0;display:flex;align-items:flex-start;
  justify-content:space-between;gap:18px;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-600)}
.sign{position:relative;width:16px;height:16px;flex:0 0 16px;margin-top:4px}
.sign::before,.sign::after{content:"";position:absolute;background:var(--brand);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.sign::before{left:0;right:0;top:7px;height:2px}
.sign::after{top:0;bottom:0;left:7px;width:2px}
.faq-item[open] .sign::after{transform:scaleY(0);opacity:0}
.faq-body{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:720px}

/* ---------- 底部转化条 ---------- */
.cta-bar{background:var(--dark);border-radius:var(--radius-card);padding:36px 28px;color:#fff;position:relative;overflow:hidden}
@media (min-width:1024px){.cta-bar{padding:48px 48px}}
.cta-bar::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:999px;
  background:radial-gradient(circle, rgba(201,151,63,.16), rgba(201,151,63,0) 68%);pointer-events:none;
}
.cta-bar h2{font-size:24px;line-height:1.34;font-weight:700;letter-spacing:-.01em}
@media (min-width:1024px){.cta-bar h2{font-size:30px;line-height:1.26}}
.cta-bar p{margin-top:14px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.62);max-width:520px}
.field{
  height:48px;width:100%;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-btn);
  padding:0 16px;color:#fff;font-size:15px;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.field::placeholder{color:rgba(255,255,255,.45)}
.field:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.12)}
.form-note{margin-top:12px;font-size:12px;line-height:1.7;color:rgba(255,255,255,.45)}
.form-note a{color:rgba(255,255,255,.7);border-bottom:1px solid rgba(255,255,255,.28)}
.form-note a:hover{color:#fff}
.form-msg{margin-top:12px;font-size:13px;color:var(--accent);min-height:20px}

/* ---------- 页脚 ---------- */
.footer{background:var(--dark);color:rgba(255,255,255,.68);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px}}
.footer-title{font-size:13px;font-weight:600;letter-spacing:.06em;color:rgba(255,255,255,.45);margin-bottom:18px}
.footer-list{display:flex;flex-direction:column;gap:13px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
.footer-list a:hover{color:#fff}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff}
.footer-brand .brand-mark{border-color:rgba(201,151,63,.55);color:var(--accent)}
.footer-brand strong{font-size:18px;font-weight:800;letter-spacing:.06em}
.footer-slogan{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.55);max-width:320px}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 32px;display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.42);
}
.footer-bottom .divider{width:1px;height:12px;background:rgba(255,255,255,.16);display:none}
@media (min-width:768px){.footer-bottom .divider{display:block}}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom-links a{color:rgba(255,255,255,.55)}
.footer-bottom-links a:hover{color:#fff}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .card:hover,.card-flat:hover,.btn:hover{transform:none}
  .card:hover .card-media img{transform:none}
  .link-more:hover .arrow{transform:none}
  .drawer,.overlay,.burger span,.sign::after{transition:none}
}

/* roulang page: category1 */
:root{
    --bg:#FAF8F4;
    --surface:#FFFFFF;
    --dark:#14112A;
    --ink:#171528;
    --ink-2:#5A5570;
    --ink-3:#8B8699;
    --brand:#2E2560;
    --brand-600:#453A8C;
    --brand-soft:#EDE9F7;
    --accent:#C9973F;
    --accent-soft:#F6EEDD;
    --aurora:#3C8F86;
    --success:#2F7D63;
    --warn:#C2703A;
    --danger:#B4433A;
    --line:#E6E2DC;
    --shadow-1:0 1px 2px rgba(23,21,40,.04);
    --shadow-2:0 14px 36px -14px rgba(23,21,40,.22);
    --r-card:4px;
    --r-btn:2px;
    --nav-w:220px;
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    font-size:16px;
    line-height:1.75;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}

  .shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  @media (min-width:1440px){.shell{max-width:1280px;}}

  .eyebrow{
    font-size:13px;letter-spacing:.06em;color:var(--ink-3);
    display:inline-flex;align-items:center;gap:10px;text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:24px;height:1px;background:var(--accent);display:inline-block;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--r-btn);
    border:1px solid transparent;cursor:pointer;
    font-size:15px;font-weight:600;letter-spacing:.02em;
    transition:transform 200ms var(--ease),background-color 200ms var(--ease),box-shadow 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease);
  }
  .btn-primary{background:var(--brand);color:#fff;border-color:var(--brand);}
  .btn-primary:hover{background:var(--brand-600);border-color:var(--brand-600);transform:translateY(-1px);box-shadow:var(--shadow-2);}
  .btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
  .btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px);}
  .btn-accent{background:transparent;color:var(--accent);border-color:var(--accent);position:relative;overflow:hidden;}
  .btn-accent::after{
    content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);
    transition:width 240ms var(--ease);
  }
  .btn-accent:hover{background:var(--accent);color:var(--dark);}
  .btn-accent:hover::after{width:100%;}
  .btn:disabled,.btn.is-disabled{opacity:.4;filter:saturate(.4);cursor:not-allowed;}

  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
    border-bottom:1px solid transparent;transition:border-color 200ms var(--ease),gap 200ms var(--ease);
  }
  .link-arrow:hover{border-color:var(--brand);gap:10px;}

  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
    background:var(--brand-soft);color:var(--brand);font-size:12px;letter-spacing:.04em;
  }
  .tag-aurora{background:rgba(60,143,134,.12);color:var(--aurora);}
  .tag-accent{background:var(--accent-soft);color:#8a6420;}

  /* ============ 左侧竖向导航 ============ */
  .sidenav{
    position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
    background:var(--brand);color:#fff;
    display:none;flex-direction:column;
    padding:28px 0 24px;z-index:60;
  }
  .sidenav-brand{
    display:flex;align-items:flex-start;gap:12px;padding:0 22px 24px;
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .brand-mark{
    width:34px;height:34px;flex:none;border-radius:4px;
    display:flex;align-items:center;justify-content:center;
    background:rgba(255,255,255,.1);color:var(--accent);
  }
  .brand-text strong{display:block;font-size:17px;font-weight:800;letter-spacing:.06em;line-height:1.3;}
  .brand-text span{display:block;font-size:11px;line-height:1.6;color:rgba(255,255,255,.6);letter-spacing:.04em;margin-top:2px;}
  .sidenav-nav{display:flex;flex-direction:column;padding:20px 12px;gap:2px;flex:1;overflow-y:auto;}
  .sidenav-link{
    position:relative;display:flex;align-items:center;gap:10px;
    height:46px;padding:0 12px;border-radius:3px;
    font-size:14px;color:rgba(255,255,255,.72);
    transition:background-color 200ms var(--ease),color 200ms var(--ease);
  }
  .sidenav-link .dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.45;flex:none;}
  .sidenav-link:hover{background:rgba(255,255,255,.08);color:#fff;}
  .sidenav-link.is-active{background:rgba(255,255,255,.08);color:#fff;font-weight:600;}
  .sidenav-link.is-active::before{
    content:"";position:absolute;left:-12px;top:12px;bottom:12px;width:3px;background:var(--accent);border-radius:0 2px 2px 0;
  }
  .sidenav-link.is-active .dot{background:var(--accent);opacity:1;}
  .sidenav-foot{padding:16px 22px 0;border-top:1px solid rgba(255,255,255,.12);}
  .sidenav-cta{
    display:flex;align-items:center;justify-content:center;height:44px;width:100%;
    border:1px solid var(--accent);color:var(--accent);border-radius:var(--r-btn);
    font-size:14px;font-weight:600;letter-spacing:.04em;
    transition:background-color 200ms var(--ease),color 200ms var(--ease);
  }
  .sidenav-cta:hover{background:var(--accent);color:var(--dark);}
  .sidenav-note{font-size:11px;color:rgba(255,255,255,.45);margin-top:12px;line-height:1.7;letter-spacing:.02em;}

  /* ============ 移动端顶栏 ============ */
  .topbar{
    position:sticky;top:0;z-index:70;height:56px;
    display:flex;align-items:center;justify-content:space-between;
    padding:0 16px;background:var(--bg);border-bottom:1px solid var(--line);
  }
  .topbar-brand{display:flex;align-items:center;gap:8px;font-weight:800;letter-spacing:.06em;}
  .topbar-brand .brand-mark{width:30px;height:30px;background:var(--brand-soft);color:var(--brand);}
  .burger{
    width:42px;height:42px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
    background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);cursor:pointer;
  }
  .burger span{display:block;width:18px;height:1.6px;background:var(--ink);transition:transform 240ms var(--ease),opacity 200ms var(--ease);}
  .burger.is-open span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
  .burger.is-open span:nth-child(2){opacity:0;}
  .burger.is-open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}

  .drawer-mask{
    position:fixed;inset:0;background:rgba(20,17,42,.45);opacity:0;visibility:hidden;
    transition:opacity 240ms var(--ease),visibility 240ms var(--ease);z-index:80;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;background:var(--surface);
    transform:translateX(100%);transition:transform 240ms var(--ease);z-index:90;
    display:flex;flex-direction:column;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 16px;border-bottom:1px solid var(--line);}
  .drawer-head strong{font-size:15px;letter-spacing:.06em;}
  .drawer-close{background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);width:36px;height:36px;cursor:pointer;font-size:16px;line-height:1;}
  .drawer-nav{flex:1;overflow-y:auto;}
  .drawer-nav .sidenav-link{
    color:var(--ink);height:48px;border-radius:0;border-bottom:1px solid var(--line);padding:0 16px;
  }
  .drawer-nav .sidenav-link:hover{background:var(--brand-soft);color:var(--brand);}
  .drawer-nav .sidenav-link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
  .drawer-nav .sidenav-link.is-active::before{left:0;top:14px;bottom:14px;}
  .drawer-foot{padding:16px;border-top:1px solid var(--line);}
  .drawer-foot .btn{width:100%;}

  @media (min-width:1024px){
    .sidenav{display:flex;}
    .topbar{display:none;}
    .drawer,.drawer-mask{display:none;}
    body{padding-left:var(--nav-w);}
  }

  /* ============ Hero ============ */
  .hero{
    background:var(--surface);
    border-bottom:1px solid var(--line);
    padding:56px 0 64px;
    position:relative;overflow:hidden;
  }
  .hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;opacity:.04;
    background-image:radial-gradient(var(--brand) 1px,transparent 1px);
    background-size:22px 22px;
  }
  .hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center;position:relative;z-index:2;}
  @media (min-width:1024px){
    .hero{padding:72px 0 80px;}
    .hero-grid{grid-template-columns:7fr 5fr;gap:56px;}
  }
  .hero h1{
    font-size:clamp(34px,4.6vw,56px);font-weight:800;letter-spacing:-.02em;line-height:1.16;
    margin:18px 0 20px;
  }
  .hero h1 em{font-style:normal;box-shadow:inset 0 -10px 0 var(--accent-soft);}
  .hero-lead{font-size:16px;line-height:1.85;color:var(--ink-2);max-width:36em;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
  .hero-metrics{display:flex;flex-wrap:wrap;gap:0;margin-top:36px;border-top:1px solid var(--line);padding-top:22px;}
  .hero-metrics .item{padding:0 24px;border-left:1px solid var(--line);}
  .hero-metrics .item:first-child{padding-left:0;border-left:0;}
  .hero-metrics .num{font-size:24px;font-weight:800;letter-spacing:-.01em;line-height:1.2;}
  .hero-metrics .cap{font-size:12px;color:var(--ink-3);letter-spacing:.04em;margin-top:4px;}
  .hero-figure{
    border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
    aspect-ratio:4/3;background:var(--brand-soft);box-shadow:var(--shadow-1);
  }
  .hero-figure img{width:100%;height:100%;object-fit:cover;}

  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);letter-spacing:.02em;margin-bottom:22px;}
  .crumb a{color:var(--ink-2);transition:color 200ms var(--ease);}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{color:var(--line);}
  .crumb .current{color:var(--ink-3);}

  /* ============ 通用板块 ============ */
  .section{padding:64px 0;}
  @media (min-width:1024px){.section{padding:96px 0;}}
  .section-alt{background:var(--surface);}
  .section-head{max-width:720px;margin-bottom:40px;}
  .section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;letter-spacing:-.01em;line-height:1.3;margin:14px 0 14px;}
  .section-head p{color:var(--ink-2);font-size:16px;line-height:1.8;}

  /* ============ 单列列表 ============ */
  .entries{border-top:1px solid var(--line);}
  .entry{
    display:grid;grid-template-columns:1fr;gap:10px;
    padding:22px 16px;border-bottom:1px solid var(--line);
    transition:background-color 200ms var(--ease);
    align-items:center;
  }
  @media (min-width:768px){
    .entry{grid-template-columns:minmax(220px,4fr) 7fr auto;gap:28px;padding:24px 20px;min-height:84px;}
  }
  .entry:hover{background:var(--brand-soft);}
  .entry:hover .entry-title{color:var(--brand);}
  .entry:hover .entry-arrow{transform:translateX(4px);color:var(--brand);}
  .entry-title{font-size:18px;font-weight:700;letter-spacing:-.01em;transition:color 200ms var(--ease);}
  .entry-num{font-size:12px;letter-spacing:.08em;color:var(--ink-3);display:block;margin-bottom:4px;}
  .entry-sum{font-size:15px;line-height:1.8;color:var(--ink-2);}
  .entry-arrow{
    font-size:18px;color:var(--ink-3);transition:transform 200ms var(--ease),color 200ms var(--ease);
    justify-self:end;display:flex;align-items:center;
  }

  /* ============ 指标条 ============ */
  .metric-band{background:var(--dark);color:#fff;padding:56px 0;}
  @media (min-width:1024px){.metric-band{padding:64px 0;}}
  .metric-band h2{font-size:clamp(22px,2.2vw,28px);font-weight:700;letter-spacing:-.01em;color:#fff;}
  .metric-band p{color:rgba(255,255,255,.6);font-size:15px;margin-top:10px;max-width:44em;line-height:1.8;}
  .metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;margin-top:36px;background:rgba(255,255,255,.14);}
  @media (min-width:1024px){.metric-grid{grid-template-columns:repeat(4,1fr);}}
  .metric-cell{background:var(--dark);padding:24px 20px;}
  .metric-cell .num{font-size:28px;font-weight:800;color:var(--accent);letter-spacing:-.01em;line-height:1.2;}
  @media (min-width:1024px){.metric-cell .num{font-size:40px;}}
  .metric-cell .cap{font-size:13px;color:rgba(255,255,255,.62);margin-top:8px;letter-spacing:.03em;line-height:1.7;}

  /* ============ 图文两栏 ============ */
  .split{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;}
  @media (min-width:1024px){.split{grid-template-columns:6fr 6fr;gap:64px;}}
  .split-figure{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);aspect-ratio:3/2;background:var(--brand-soft);}
  .split-figure img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
  .split-figure:hover img{transform:scale(1.03);}
  .check-list{margin-top:24px;display:flex;flex-direction:column;gap:16px;}
  .check-list li{display:flex;gap:14px;font-size:15px;line-height:1.8;color:var(--ink-2);}
  .check-list li::before{
    content:"";flex:none;width:8px;height:8px;margin-top:9px;background:var(--brand);border-radius:1px;
  }
  .check-list strong{color:var(--ink);font-weight:700;}

  /* ============ 卡片组（两列，非等宽同构） ============ */
  .duo{display:grid;grid-template-columns:1fr;gap:24px;}
  @media (min-width:768px){.duo{grid-template-columns:6fr 6fr;}}
  @media (min-width:1024px){.duo{grid-template-columns:7fr 5fr;}}
  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:28px;box-shadow:var(--shadow-1);
    transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#dcd6cd;}
  .card h3{font-size:18px;font-weight:700;letter-spacing:-.01em;margin:14px 0 10px;line-height:1.5;}
  .card p{font-size:15px;color:var(--ink-2);line-height:1.8;}
  .card-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
  .card-list li{font-size:14px;color:var(--ink-2);display:flex;gap:10px;align-items:flex-start;line-height:1.7;}
  .card-list li span{color:var(--success);font-weight:700;flex:none;}

  /* ============ FAQ ============ */
  .faq-wrap{display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:1024px){.faq-wrap{grid-template-columns:4fr 8fr;gap:64px;}}
  .faq-list{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:20px 4px;font-size:16px;font-weight:600;letter-spacing:-.005em;
    transition:color 200ms var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand);}
  .faq-icon{
    flex:none;width:22px;height:22px;position:relative;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--brand);transition:transform 200ms var(--ease),opacity 200ms var(--ease);
  }
  .faq-icon::before{left:0;top:10px;width:22px;height:1.6px;}
  .faq-icon::after{left:10px;top:0;width:1.6px;height:22px;}
  .faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
  .faq-body{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:44em;}

  /* ============ CTA ============ */
  .cta-band{background:var(--dark);color:#fff;padding:56px 0;}
  @media (min-width:1024px){.cta-band{padding:80px 0;}}
  .cta-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center;}
  @media (min-width:1024px){.cta-grid{grid-template-columns:6fr 6fr;gap:64px;}}
  .cta-band h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;letter-spacing:-.01em;line-height:1.35;color:#fff;}
  .cta-band .cta-desc{color:rgba(255,255,255,.62);font-size:15px;margin-top:14px;line-height:1.8;max-width:34em;}
  .cta-form{display:flex;flex-direction:column;gap:12px;}
  .form-row{display:flex;flex-direction:column;gap:12px;}
  @media (min-width:640px){.form-row{flex-direction:row;}}
  .cta-form label{font-size:13px;color:rgba(255,255,255,.6);letter-spacing:.04em;}
  .cta-form input{
    flex:1;height:48px;padding:0 16px;border-radius:var(--r-btn);
    background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22);color:#fff;
    transition:border-color 200ms var(--ease),background-color 200ms var(--ease);
  }
  .cta-form input::placeholder{color:rgba(255,255,255,.38);}
  .cta-form input:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.12);}
  .cta-privacy{font-size:12px;color:rgba(255,255,255,.45);line-height:1.7;letter-spacing:.02em;}
  .cta-privacy a{color:rgba(255,255,255,.72);border-bottom:1px solid rgba(255,255,255,.28);}
  .cta-privacy a:hover{color:#fff;border-color:var(--accent);}

  /* ============ 页脚 ============ */
  .footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:5fr 3fr 3fr 3fr;gap:48px;}}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand .brand-mark{background:rgba(255,255,255,.08);color:var(--accent);width:30px;height:30px;}
  .footer-brand strong{font-size:17px;font-weight:800;letter-spacing:.08em;color:#fff;}
  .footer-slogan{font-size:14px;line-height:1.85;color:rgba(255,255,255,.55);max-width:34em;}
  .footer-title{font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.45);margin-bottom:16px;}
  .footer-list{display:flex;flex-direction:column;gap:11px;}
  .footer-list a{font-size:14px;color:rgba(255,255,255,.72);transition:color 200ms var(--ease);}
  .footer-list a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
  .footer-bottom{
    margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
    display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;font-size:13px;color:rgba(255,255,255,.45);
  }
  .footer-bottom .divider{width:1px;height:12px;background:rgba(255,255,255,.2);display:inline-block;}
  .footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px;}
  .footer-bottom-links a{color:rgba(255,255,255,.55);}
  .footer-bottom-links a:hover{color:#fff;}

  /* ============ 入场动效 ============ */
  .fade-up{opacity:0;transform:translateY(16px);transition:opacity 400ms var(--ease),transform 400ms var(--ease);}
  .fade-up.is-in{opacity:1;transform:none;}
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important;}
    .fade-up{opacity:1;transform:none;}
  }

/* roulang page: article */
:root{
  --bg:#FAF8F4;
  --surface:#FFFFFF;
  --dark:#14112A;
  --ink:#171528;
  --ink-2:#5A5570;
  --ink-3:#8B8699;
  --brand:#2E2560;
  --brand-600:#453A8C;
  --brand-soft:#EDE9F7;
  --accent:#C9973F;
  --accent-soft:#F6EEDD;
  --aurora:#3C8F86;
  --success:#2F7D63;
  --line:#E6E2DC;
  --radius-card:4px;
  --radius-btn:2px;
  --shadow-1:0 1px 2px rgba(23,21,40,.04);
  --shadow-2:0 14px 36px -14px rgba(23,21,40,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::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:var(--font);
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:var(--brand-soft);color:var(--brand)}
body.no-scroll{overflow:hidden}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.shell{max-width:1280px}}
@media (max-width:520px){.shell{padding:0 20px}}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;width:88px;z-index:70;
  background:var(--brand);color:#fff;
  display:flex;flex-direction:column;padding:22px 0 24px;
  overflow:hidden;transition:width .24s var(--ease);
}
.sidenav:hover,.sidenav:focus-within{width:220px}
.sidenav-brand{display:flex;align-items:center;gap:12px;height:40px;padding:0 26px;white-space:nowrap}
.brand-mark{
  flex:0 0 36px;width:36px;height:36px;border-radius:2px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.10);color:var(--accent);
}
.sidenav-brand-text{display:flex;flex-direction:column;line-height:1.25;opacity:0;transition:opacity .2s var(--ease)}
.sidenav:hover .sidenav-brand-text{opacity:1}
.sidenav-brand-text strong{font-size:16px;font-weight:800;letter-spacing:.04em}
.sidenav-brand-text em{font-style:normal;font-size:11px;letter-spacing:.16em;color:#9C97C4}
.sidenav-nav{margin-top:34px;display:flex;flex-direction:column;gap:4px}
.sidenav-link{
  position:relative;display:flex;align-items:center;justify-content:center;gap:12px;
  height:46px;padding:0 10px;font-size:14px;color:transparent;
  white-space:nowrap;overflow:hidden;
  transition:background .2s var(--ease),color .2s var(--ease),padding .24s var(--ease);
}
.sidenav:hover .sidenav-link{justify-content:flex-start;padding:0 26px;color:#C6C0E2}
.sidenav-link:hover{background:rgba(255,255,255,.07)}
.sidenav-link.is-active{background:rgba(255,255,255,.10)}
.sidenav-link.is-active::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent)}
.sidenav:hover .sidenav-link.is-active{color:#fff}
.sidenav-link .dot{
  flex:0 0 9px;width:9px;height:9px;border-radius:50%;
  border:1.5px solid rgba(255,255,255,.55);background:transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.sidenav-link.is-active .dot{background:var(--accent);border-color:var(--accent)}
.sidenav-foot{margin-top:auto;padding:0 20px}
.sidenav-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:44px;border:1px solid var(--accent);border-radius:var(--radius-btn);
  color:var(--accent);font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.sidenav-cta:hover{background:var(--accent);color:#1B1633}
.sidenav-cta span{display:none}
.sidenav:hover .sidenav-cta span{display:inline}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  background:rgba(250,248,244,.97);border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 20px;
}
.topbar-brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.02em}
.topbar-brand .brand-mark{background:var(--brand-soft);color:var(--brand)}
.menu-btn{
  width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--surface);display:inline-flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.menu-btn i{display:block;width:16px;height:1.5px;background:var(--ink);transition:.2s var(--ease)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,17,42,.48);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;z-index:100;
  background:var(--surface);display:flex;flex-direction:column;padding:20px 20px 28px;
  transform:translateX(100%);transition:transform .24s var(--ease);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:15px;font-weight:800}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface);cursor:pointer;color:var(--ink-2)}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px}
.drawer-nav a{
  display:flex;align-items:center;height:48px;font-size:15px;color:var(--ink);
  border-bottom:1px solid var(--line);transition:color .2s var(--ease),padding .2s var(--ease);
}
.drawer-nav a:hover{padding-left:6px;color:var(--brand)}
.drawer-cta{margin-top:auto;width:100%}
.drawer-note{font-size:12px;color:var(--ink-3);margin-top:14px;line-height:1.7}

@media (max-width:1023px){
  .sidenav{display:none}
  .topbar{display:flex}
  body{padding-top:56px}
}

/* ---------- 主区域 ---------- */
.page-main{margin-left:88px;min-height:60vh}
@media (max-width:1023px){.page-main{margin-left:0}}

/* ---------- 按钮 / 标签 ---------- */
.btn-primary,.btn-ghost,.btn-accent,.btn-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--brand);border:1px solid var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-600);border-color:var(--brand-600);transform:translateY(-1px)}
.btn-ghost{background:transparent;border:1px solid var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft)}
.btn-accent{background:transparent;border:1px solid var(--accent);color:var(--accent)}
.btn-accent:hover{background:var(--accent);color:#1B1633}
.btn-light{background:transparent;border:1px solid rgba(255,255,255,.38);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.12)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.06em;
}
.tag-brand{background:var(--brand-soft);color:var(--brand)}
.tag-aurora{background:rgba(60,143,134,.12);color:var(--aurora)}
.tag-accent{background:var(--accent-soft);color:#8B6421}
.link-underline{position:relative;display:inline-block;color:var(--brand-600);font-weight:600;padding-bottom:2px}
.link-underline::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:currentColor;transition:width .25s var(--ease)}
.link-underline:hover::after{width:100%}

/* ---------- 面包屑与文章头 ---------- */
.article-hero{background:var(--bg);padding:36px 0 56px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;color:var(--ink-3);margin-bottom:30px}
.breadcrumb a{color:var(--ink-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--ink-3)}
.breadcrumb .current{max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-3)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center}
@media (max-width:1023px){.hero-grid{grid-template-columns:1fr;gap:26px}}
.hero-copy h1{
  font-size:clamp(32px,4.2vw,52px);line-height:1.16;font-weight:800;
  letter-spacing:-.02em;margin:16px 0 18px;color:var(--ink);
}
.hero-copy .lead{font-size:16px;line-height:1.85;color:var(--ink-2);max-width:620px}
.meta-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;letter-spacing:.06em;color:var(--ink-3);margin-top:22px}
.meta-line .dot-sep{width:3px;height:3px;border-radius:50%;background:var(--ink-3);display:inline-block}
.hero-media{
  position:relative;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);background:var(--surface);
}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s var(--ease)}
.hero-media:hover img{transform:scale(1.03)}
.stat-bar{
  margin-top:44px;background:var(--dark);border-radius:var(--radius-card);
  display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;
}
.stat{padding:20px 24px;border-left:1px solid rgba(255,255,255,.08)}
.stat:first-child{border-left:0}
.stat-num{font-size:24px;font-weight:800;color:var(--accent);line-height:1.2}
.stat-label{font-size:12px;letter-spacing:.06em;color:#9C97B5;margin-top:6px}
@media (max-width:767px){
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .stat{padding:16px 18px}
  .stat:nth-child(odd){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid rgba(255,255,255,.08)}
}

/* ---------- 正文区 ---------- */
.article-section{background:var(--surface);border-top:1px solid var(--line);padding:56px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,760px) 280px;justify-content:center}
}
.article-body{font-size:17px;line-height:1.9;color:var(--ink);word-wrap:break-word}
.article-body > p:first-of-type::first-letter{
  float:left;font-size:52px;line-height:.95;font-weight:800;color:var(--brand);
  margin:6px 12px 0 0;
}
.article-body p{margin:0 0 1.5em}
.article-body h2{
  font-size:24px;font-weight:700;line-height:1.4;letter-spacing:-.01em;
  margin:44px 0 16px;padding-left:14px;border-left:3px solid var(--accent);
  scroll-margin-top:80px;
}
.article-body h3{font-size:19px;font-weight:600;line-height:1.5;margin:30px 0 12px;scroll-margin-top:80px}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.5em;padding-left:22px}
.article-body ul{list-style:square}
.article-body li{margin-bottom:8px}
.article-body ul li::marker{color:var(--brand)}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--brand-soft);
  border-left:3px solid var(--accent);border-radius:0 var(--radius-card) var(--radius-card) 0;
  color:var(--ink-2);font-size:16px;
}
.article-body img{border-radius:var(--radius-card);margin:26px auto;border:1px solid var(--line)}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(69,58,140,.35)}
.article-body a:hover{border-bottom-color:var(--brand-600)}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;border:1px solid var(--line);font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;line-height:1.7}
.article-body th{background:var(--brand-soft);font-weight:600;color:var(--brand)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.article-body code{background:var(--brand-soft);color:var(--brand);padding:2px 6px;border-radius:2px;font-size:15px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ---------- 侧栏目录 ---------- */
.toc-wrap{display:none}
@media (min-width:1280px){.toc-wrap{display:block}}
.toc{
  position:sticky;top:28px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);padding:18px 18px 14px;
  box-shadow:var(--shadow-1);
}
.toc-title{font-size:13px;letter-spacing:.06em;color:var(--ink-3);margin-bottom:10px}
.toc-nav{display:flex;flex-direction:column}
.toc-nav a{
  font-size:13px;line-height:1.55;color:var(--ink-2);padding:7px 0 7px 12px;
  border-left:1px solid var(--line);transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc-nav a:hover{color:var(--brand)}
.toc-nav a.is-current{color:var(--brand);border-left-color:var(--accent);font-weight:600}
.toc-empty{font-size:13px;color:var(--ink-3);line-height:1.7}
.toc-cta{margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.toc-cta .btn-accent{width:100%;height:42px;font-size:14px}

.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:64px 24px;text-align:center;color:var(--ink-2);background:var(--bg);
}
.empty-state p{font-size:17px;font-weight:600;color:var(--ink)}
.empty-state span{display:block;font-size:14px;color:var(--ink-3);margin-top:8px}
.empty-state .btn-primary{margin-top:22px}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0}
.section-alt{background:var(--bg);border-top:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:34px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:-.01em;line-height:1.35}
.section-head p{font-size:14px;color:var(--ink-2);margin-top:8px;max-width:640px}
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1023px){.rec-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.rec-grid{grid-template-columns:1fr;gap:16px}}
.rec-card{
  display:flex;gap:14px;padding:14px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.rec-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D9D3CA}
.rec-card img{flex:0 0 88px;width:88px;height:62px;object-fit:cover;border-radius:var(--radius-card)}
.rec-card h3{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-card time{font-size:12px;color:var(--ink-3);letter-spacing:.04em}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px}
@media (max-width:1023px){.faq-wrap{grid-template-columns:1fr;gap:24px}}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.faq-icon::before{left:0;top:7.5px;width:16px;height:1.5px}
.faq-icon::after{left:7.25px;top:0;width:1.5px;height:16px}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-body{padding:0 32px 22px 0;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ---------- 深色转化条 ---------- */
.cta-strip{
  background-image:linear-gradient(rgba(20,17,42,.93),rgba(20,17,42,.93)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  color:#fff;padding:56px 0;
}
.cta-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center}
@media (max-width:900px){.cta-inner{grid-template-columns:1fr;gap:24px}}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:-.01em;line-height:1.35}
.cta-inner p{color:#A9A4C2;font-size:15px;margin-top:12px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
@media (max-width:900px){.cta-actions{justify-content:flex-start}}
@media (max-width:520px){.cta-actions .btn-accent,.cta-actions .btn-light{width:100%}}

/* ---------- 页脚 ---------- */
.footer{background:var(--dark);color:#A9A4C2;padding:64px 0 26px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;gap:28px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:800;letter-spacing:.02em}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);color:var(--accent)}
.footer-slogan{margin-top:16px;font-size:13px;line-height:1.85;color:#8B86A6;max-width:330px}
.footer-title{font-size:13px;letter-spacing:.06em;color:#fff;font-weight:600;margin-bottom:16px}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{color:#A9A4C2;font-size:13.5px;transition:color .2s var(--ease)}
.footer-list a:hover{color:#fff}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:#7C7796;
}
.footer-bottom .divider{width:1px;height:12px;background:rgba(255,255,255,.16)}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom-links a:hover{color:#fff}

/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .js .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --bg:#FAF8F4;
  --surface:#FFFFFF;
  --dark:#14112A;
  --ink:#171528;
  --ink-2:#5A5570;
  --ink-3:#8B8699;
  --brand:#2E2560;
  --brand-600:#453A8C;
  --brand-soft:#EDE9F7;
  --accent:#C9973F;
  --accent-soft:#F6EEDD;
  --aurora:#3C8F86;
  --success:#2F7D63;
  --warn:#C2703A;
  --danger:#B4433A;
  --line:#E6E2DC;
  --radius:4px;
  --radius-btn:2px;
  --shadow-1:0 1px 2px rgba(23,21,40,.04);
  --shadow-2:0 14px 36px -14px rgba(23,21,40,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,ol,ul{margin:0}
ol,ul{padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;z-index:99}
.skip-link:focus{left:12px;top:12px}
.shell{max-width:1200px;margin:0 auto;padding:0 24px}
@media(min-width:1440px){.shell{max-width:1280px}}
@media(min-width:1024px){.page{padding-left:var(--nav-w)}}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--nav-w);
  background:var(--dark);
  display:none;
  z-index:40;
  overflow:hidden;
  transition:width 240ms var(--ease);
}
.sidenav:hover{width:220px;box-shadow:var(--shadow-2)}
@media(min-width:1024px){.sidenav{display:block}}
.sidenav-inner{height:100%;display:flex;flex-direction:column;padding:18px 12px 18px;gap:18px}
.sidenav-brand{display:flex;align-items:center;gap:10px;padding:6px 4px;color:#fff;min-height:56px}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:999px;
  display:grid;place-items:center;
  background:rgba(201,151,63,.18);color:var(--accent);
}
.brand-words{display:flex;flex-direction:column;min-width:0}
.brand-words strong{
  font-size:15px;font-weight:700;letter-spacing:.12em;color:#fff;
  writing-mode:vertical-rl;
}
.sidenav:hover .brand-words strong{writing-mode:horizontal-tb}
.brand-words em{
  font-style:normal;font-size:11px;color:#A9A3C0;letter-spacing:.08em;
  margin-top:2px;display:none;white-space:nowrap;
}
.sidenav:hover .brand-words em{display:block}
.sidenav-nav{display:flex;flex-direction:column;gap:6px;margin-top:4px}
.sidenav-link{
  position:relative;display:flex;align-items:center;justify-content:center;
  height:46px;padding:0 10px;border-radius:var(--radius-btn);
  color:#C6C1DA;font-size:14px;white-space:nowrap;
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.sidenav:hover .sidenav-link{justify-content:flex-start}
.sidenav-link .dot{width:6px;height:6px;flex:0 0 6px;border-radius:999px;background:currentColor;opacity:.6}
.sidenav-link .label{
  max-width:0;opacity:0;overflow:hidden;margin-left:0;
  transition:max-width 240ms var(--ease),opacity 160ms var(--ease),margin-left 240ms var(--ease);
}
.sidenav:hover .sidenav-link .label{max-width:150px;opacity:1;margin-left:10px}
.sidenav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.sidenav-link.is-active{color:#fff;background:rgba(255,255,255,.08)}
.sidenav-link.is-active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;background:var(--accent);border-radius:0 3px 3px 0}
.sidenav-cta{
  margin-top:auto;display:flex;align-items:center;justify-content:center;
  height:46px;border:1px solid var(--accent);border-radius:var(--radius-btn);
  color:var(--accent);font-size:14px;letter-spacing:.04em;white-space:nowrap;
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.sidenav-cta .cta-long{display:none}
.sidenav:hover .sidenav-cta .cta-short{display:none}
.sidenav:hover .sidenav-cta .cta-long{display:inline}
.sidenav-cta:hover{background:var(--accent);color:var(--dark)}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  position:sticky;top:0;z-index:35;height:56px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;background:var(--bg);border-bottom:1px solid var(--line);
}
@media(min-width:1024px){.topbar{display:none}}
.topbar-brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:16px;letter-spacing:.04em}
.topbar-brand .brand-mark{background:var(--brand-soft);color:var(--brand)}
.hamburger{width:40px;height:40px;display:grid;place-items:center;border-radius:var(--radius-btn)}
.hamburger span{display:block;width:18px;height:1.6px;background:var(--ink);margin:3px 0;transition:transform 200ms var(--ease)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,17,42,.45);z-index:50;
  opacity:0;visibility:hidden;transition:opacity 240ms var(--ease),visibility 240ms;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;background:#fff;z-index:60;
  transform:translateX(101%);transition:transform 240ms var(--ease);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-head strong{font-size:16px;letter-spacing:.04em}
.drawer-close{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--line);border-radius:999px;font-size:18px;color:var(--ink-2)}
.drawer-list{margin-top:8px}
.drawer-list a{display:flex;align-items:center;height:48px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-2)}
.drawer-list a.is-active{color:var(--brand);font-weight:600}
.drawer-cta{margin-top:auto;display:flex;align-items:center;justify-content:center;height:48px;background:var(--brand);color:#fff;border-radius:var(--radius-btn);letter-spacing:.04em}
body.is-locked{overflow:hidden}

/* ---------- 按钮与标签 ---------- */
.btn-primary,.btn-ghost,.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;letter-spacing:.02em;
  transition:background 200ms var(--ease),color 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px)}
.btn-ghost{border:1px solid var(--brand);color:var(--brand);background:transparent}
.btn-ghost:hover{background:var(--brand-soft)}
.btn-accent{
  position:relative;border:1px solid var(--accent);color:var(--accent);background:transparent;
}
.btn-accent::after{
  content:"";position:absolute;left:12px;right:12px;bottom:10px;height:1px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform 220ms var(--ease);
}
.btn-accent:hover{background:var(--accent);color:var(--dark)}
.btn-accent:hover::after{transform:scaleX(1)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;background:var(--brand-soft);color:var(--brand);
}
.tag-accent{background:var(--accent-soft);color:#8A6520}
.tag-aurora{background:rgba(60,143,134,.12);color:#2E6F68}

/* ---------- 板块基础 ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:96px 0}}
.section-white{background:var(--surface)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:24px;line-height:1.35;font-weight:700;letter-spacing:-.01em;margin-top:14px}
.section-head p{margin-top:12px;color:var(--ink-2);font-size:15px}
@media(min-width:768px){.section-head h2{font-size:32px;line-height:1.25}.section-head p{font-size:16px}}
.eyebrow{font-size:13px;letter-spacing:.06em;color:var(--ink-3);display:flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--accent)}

/* ---------- 面包屑 + Hero ---------- */
.hero{padding:28px 0 0;background:var(--bg)}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);letter-spacing:.04em}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--ink-3)}
.crumb .current{color:var(--ink-3)}
.hero-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:32px 0 8px}
@media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px;align-items:center;padding:48px 0 16px}}
.hero h1{
  font-size:34px;line-height:1.28;font-weight:800;letter-spacing:-.02em;margin-top:18px;
}
@media(min-width:768px){.hero h1{font-size:44px;line-height:1.2}}
@media(min-width:1024px){.hero h1{font-size:52px;line-height:1.16}}
.hero .lead{margin-top:20px;font-size:16px;line-height:1.85;color:var(--ink-2);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:20px;margin-top:26px;padding-top:20px;border-top:1px solid var(--line)}
.hero-meta span{font-size:13px;color:var(--ink-2);display:flex;align-items:center;gap:8px}
.hero-meta span::before{content:"";width:5px;height:5px;border-radius:999px;background:var(--aurora)}
.hero-media{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--brand-soft)}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.anchorbar{
  display:flex;gap:8px;overflow-x:auto;white-space:nowrap;
  padding:20px 0 4px;margin-top:8px;border-top:1px solid var(--line);
  scrollbar-width:none;
}
.anchorbar::-webkit-scrollbar{display:none}
.anchorbar a{
  flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--ink-2);
  background:var(--surface);transition:border-color 200ms var(--ease),color 200ms var(--ease),background 200ms var(--ease);
}
.anchorbar a:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}

/* ---------- 深色指标条 ---------- */
.dark-band{background:var(--dark);color:#EDEBF5;position:relative;overflow:hidden}
.dark-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:26px 26px;opacity:.9;
}
.dark-band .shell{position:relative}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px 20px}
@media(min-width:1024px){.stat-grid{grid-template-columns:repeat(4,1fr);gap:0}}
.stat{padding:0}
@media(min-width:1024px){
  .stat{padding:0 28px}
  .stat:first-child{padding-left:0}
  .stat+.stat{border-left:1px solid rgba(255,255,255,.14)}
}
.stat-num{font-size:28px;line-height:1.2;font-weight:800;color:#fff;letter-spacing:-.02em}
.stat-num small{font-size:14px;font-weight:600;color:var(--accent);margin-left:6px;letter-spacing:0}
@media(min-width:768px){.stat-num{font-size:40px}}
.stat-title{margin-top:10px;font-size:15px;color:#EDEBF5;font-weight:600}
.stat-desc{margin-top:8px;font-size:13px;line-height:1.7;color:#A9A3C0}

/* ---------- 错位卡片网格 ---------- */
.stagger{display:grid;grid-template-columns:1fr;gap:24px;padding-bottom:0}
@media(min-width:768px){
  .stagger{grid-template-columns:1fr 1fr;column-gap:24px;row-gap:32px;padding-bottom:56px}
  .stagger > .card:nth-child(odd){margin-top:40px}
}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:box-shadow 200ms var(--ease),transform 200ms var(--ease);
}
.card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.card-media{aspect-ratio:4/3;overflow:hidden;background:var(--brand-soft)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:24px}
.card-body h3{font-size:18px;line-height:1.5;font-weight:700;letter-spacing:-.01em}
.card-body p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:768px){.steps{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr);gap:0}}
.step{background:transparent;padding:0}
@media(min-width:1024px){
  .step{padding:0 24px}
  .step:first-child{padding-left:0}
  .step+.step{border-left:1px solid var(--line)}
}
.step-no{font-size:13px;letter-spacing:.14em;color:var(--accent);font-weight:700}
.step h3{font-size:17px;font-weight:700;margin-top:12px}
.step p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--ink-2)}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface)}
.data-table{min-width:680px;font-size:15px}
.data-table th,.data-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line)}
.data-table th{background:var(--brand-soft);color:var(--brand);font-size:13px;letter-spacing:.06em;font-weight:700}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table tbody tr:hover{background:#FBFAF8}
.data-table td:first-child{font-weight:600}
.pill-ok{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:rgba(47,125,99,.12);color:var(--success);font-size:12px}

/* ---------- 评价轮播 ---------- */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.rail-nav{display:none;gap:10px}
@media(min-width:1024px){.rail-nav{display:flex}}
.rail-btn{
  width:36px;height:36px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  display:grid;place-items:center;color:var(--ink-2);
  transition:border-color 200ms var(--ease),color 200ms var(--ease),transform 200ms var(--ease);
}
.rail-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.rail{
  display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:12px;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none}
.review{
  flex:0 0 320px;scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-1);
}
@media(min-width:768px){.review{flex:0 0 356px}}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{width:40px;height:40px;border-radius:999px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:700;font-size:15px}
.review-name{font-size:15px;font-weight:600}
.review-role{font-size:12px;color:var(--ink-3);letter-spacing:.04em}
.stars{margin-top:16px;color:var(--accent);font-size:14px;letter-spacing:2px}
.review p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.dots{display:flex;gap:8px;margin-top:8px}
.dots i{width:18px;height:3px;border-radius:999px;background:var(--line)}
.dots i.on{background:var(--brand)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){.faq-layout{grid-template-columns:4fr 8fr;gap:64px}}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;font-size:16px;font-weight:600;cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;color:var(--accent);transition:transform 200ms var(--ease);line-height:1}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--ink-2)}
.faq-aside{background:var(--brand-soft);border-radius:var(--radius);padding:24px}
.faq-aside h3{font-size:16px;font-weight:700}
.faq-aside p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--ink-2)}

/* ---------- 底部转化区 ---------- */
.cta-band{background:var(--dark);color:#fff;padding:56px 0;position:relative;overflow:hidden}
@media(min-width:768px){.cta-band{padding:72px 0}}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:999px;
  background:radial-gradient(circle,rgba(201,151,63,.18),transparent 70%);
}
.cta-grid{position:relative;display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media(min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:64px}}
.cta-band h2{font-size:24px;line-height:1.35;font-weight:700;letter-spacing:-.01em}
@media(min-width:768px){.cta-band h2{font-size:30px}}
.cta-band .cta-sub{margin-top:14px;font-size:15px;line-height:1.8;color:#C0BAD6;max-width:520px}
.cta-form{display:flex;flex-wrap:wrap;gap:12px}
.cta-form input{
  flex:1 1 220px;height:48px;padding:0 16px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.24);color:#fff;
  transition:border-color 200ms var(--ease),background 200ms var(--ease);
}
.cta-form input::placeholder{color:#9E97B8}
.cta-form input:focus{border-color:var(--accent);background:rgba(255,255,255,.12);outline:none}
.cta-form .btn-accent{color:var(--accent);border-color:var(--accent);flex:0 0 auto}
.cta-form .btn-accent:hover{color:var(--dark);background:var(--accent)}
@media(max-width:560px){.cta-form .btn-accent{width:100%}}
.form-note{flex:1 1 100%;font-size:12px;line-height:1.7;color:#8F89A8}
.form-note a{color:#C0BAD6;border-bottom:1px solid rgba(255,255,255,.28)}
#formNote.is-ok{color:#8FD3BE}

/* ---------- 页脚 ---------- */
.footer{background:var(--dark);color:#CFCBE0;padding:56px 0 0}
@media(min-width:768px){.footer{padding:72px 0 0}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:40px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(201,151,63,.18);color:var(--accent)}
.footer-brand strong{font-size:17px;letter-spacing:.08em}
.footer-slogan{font-size:14px;line-height:1.85;color:#A9A3C0;max-width:330px}
.footer-title{font-size:13px;letter-spacing:.06em;color:#8F89A8;margin-bottom:16px}
.footer-list{display:grid;gap:10px}
.footer-list a{font-size:14px;color:#CFCBE0;transition:color 160ms var(--ease)}
.footer-list a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px;
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#8F89A8;
}
.footer-bottom .divider{width:1px;height:12px;background:rgba(255,255,255,.2)}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:16px;margin-left:auto}
.footer-bottom-links a:hover{color:#fff}

/* ---------- 动效 ---------- */
.js-anim .reveal{opacity:0;transform:translateY(16px);transition:opacity 400ms var(--ease),transform 400ms var(--ease)}
.js-anim .reveal.is-visible{opacity:1;transform:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .js-anim .reveal{opacity:1 !important;transform:none !important}
  .card:hover,.btn-primary:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#FAF8F4;
  --surface:#FFFFFF;
  --dark:#14112A;
  --ink:#171528;
  --ink-2:#5A5570;
  --ink-3:#8B8699;
  --brand:#2E2560;
  --brand-600:#453A8C;
  --brand-soft:#EDE9F7;
  --accent:#C9973F;
  --accent-soft:#F6EEDD;
  --aurora:#3C8F86;
  --success:#2F7D63;
  --warn:#C2703A;
  --danger:#B4433A;
  --line:#E6E2DC;
  --r-card:4px;
  --r-btn:2px;
  --sh-1:0 1px 2px rgba(23,21,40,.04);
  --sh-2:0 14px 36px -14px rgba(23,21,40,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:220px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease)}
img{display:block;max-width:100%}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3{margin:0;font-weight:700}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media(min-width:1440px){.shell{max-width:1280px}}
@media(max-width:520px){.shell{padding:0 20px}}

/* ============ 移动端顶栏 ============ */
.topbar{
  position:sticky;top:0;z-index:50;height:56px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;background:rgba(250,248,244,.96);
  border-bottom:1px solid var(--line);backdrop-filter:blur(8px);
}
.topbar-brand{display:flex;align-items:center;gap:8px;font-size:17px;font-weight:800;letter-spacing:.04em;color:var(--brand)}
.brand-mark{
  width:28px;height:28px;flex:none;display:inline-flex;align-items:center;justify-content:center;
  border-radius:3px;background:var(--brand-soft);color:var(--brand);
}
.burger{
  width:40px;height:40px;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line);background:var(--surface);border-radius:var(--r-btn);cursor:pointer;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.burger:hover{border-color:var(--brand);background:var(--brand-soft)}
.burger span{display:block;width:18px;height:2px;background:var(--brand);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(min-width:1024px){.topbar{display:none}}

.mask{
  position:fixed;inset:0;z-index:60;background:rgba(20,17,42,.45);
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
}
.mask.is-open{opacity:1;pointer-events:auto}
@media(min-width:1024px){.mask{display:none}}

/* ============ 左侧竖向导航 ============ */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;z-index:70;
  display:flex;flex-direction:column;
  width:82vw;max-width:360px;padding:20px 0 24px;
  background:var(--brand);color:#fff;
  transform:translateX(-100%);
  transition:transform .24s var(--ease);
  overflow-y:auto;
}
.sidenav.is-open{transform:translateX(0)}
@media(min-width:1024px){
  .sidenav{width:var(--nav-w);max-width:var(--nav-w);transform:none;box-shadow:1px 0 0 rgba(255,255,255,.06)}
}
.sidenav-head{padding:0 20px 22px;border-bottom:1px solid rgba(255,255,255,.12)}
.sidenav-brand{display:flex;align-items:center;gap:10px;color:#fff}
.sidenav .brand-mark{background:rgba(255,255,255,.10);color:var(--accent);width:30px;height:30px}
.sidenav-brand strong{font-size:20px;font-weight:800;letter-spacing:.06em}
.sidenav-tag{margin:12px 0 0;font-size:12px;line-height:1.7;letter-spacing:.06em;color:rgba(255,255,255,.62)}
.sidenav-nav{display:flex;flex-direction:column;flex:1;padding:14px 0}
.sidenav-link{
  position:relative;display:flex;align-items:center;gap:10px;
  height:48px;padding:0 20px;font-size:14px;color:rgba(255,255,255,.78);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.sidenav-link .dot{width:6px;height:6px;flex:none;border-radius:999px;background:rgba(255,255,255,.32);transition:background-color .2s var(--ease)}
.sidenav-link:hover{background:rgba(255,255,255,.08);color:#fff}
.sidenav-link:hover .dot{background:rgba(255,255,255,.7)}
.sidenav-link.is-active{color:#fff;font-weight:600;background:rgba(255,255,255,.06)}
.sidenav-link.is-active .dot{background:var(--accent)}
.sidenav-link.is-active::before{content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;background:var(--accent)}
.sidenav-foot{padding:16px 20px 0;border-top:1px solid rgba(255,255,255,.12)}
.sidenav-cta{
  display:flex;align-items:center;justify-content:center;height:48px;position:relative;
  border:1px solid var(--accent);border-radius:var(--r-btn);
  color:var(--accent);font-weight:600;letter-spacing:.04em;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.sidenav-cta:hover{background:rgba(201,151,63,.18);color:#F5DFB4}

/* ============ 内容区 ============ */
.page{display:flex;flex-direction:column;min-height:100vh}
@media(min-width:1024px){.page{padding-left:var(--nav-w)}}
main{flex:1 1 auto}

/* ============ 通用板块与排版 ============ */
.sec{padding:56px 0}
@media(min-width:1024px){.sec{padding:96px 0}}
.sec-alt{background:var(--surface)}
.sec-dark{background:var(--dark);color:#fff}

.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--aurora);
  text-transform:uppercase;font-weight:600;margin-bottom:12px;
}
.page-title{
  font-size:34px;line-height:1.24;font-weight:800;letter-spacing:-.02em;color:var(--brand);
}
@media(min-width:768px){.page-title{font-size:44px}}
@media(min-width:1024px){.page-title{font-size:56px;line-height:1.14}}
.sec-title{font-size:24px;line-height:1.35;letter-spacing:-.01em;color:var(--ink)}
@media(min-width:1024px){.sec-title{font-size:32px;line-height:1.25}}
.lede{font-size:16px;line-height:1.85;color:var(--ink-2);max-width:660px;margin-top:20px}
.sec-text{font-size:16px;line-height:1.85;color:var(--ink-2);max-width:680px;margin-top:16px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;
  border:1px solid transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-600);border-color:var(--brand-600);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft)}
.btn-accent{position:relative;overflow:hidden;background:transparent;border-color:var(--accent);color:#F0D9A8}
.btn-accent::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.btn-accent:hover{background:rgba(201,151,63,.16)}
.btn-accent:hover::after{transform:scaleX(1)}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
@media(max-width:520px){.btn-row{flex-direction:column}.btn-row .btn{width:100%}}

.text-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:24px;
  font-size:14px;font-weight:600;color:var(--brand);letter-spacing:.02em;
  border-bottom:1px solid var(--line);padding-bottom:6px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.text-link .arrow{display:inline-block;transition:transform .2s var(--ease)}
.text-link:hover{border-color:var(--accent);color:var(--brand-600)}
.text-link:hover .arrow{transform:translateX(4px)}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--ink-3);
}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--line)}
.crumb .current{color:var(--ink-3)}

/* ============ 分类首屏 ============ */
.cat-hero{background:var(--bg);padding:28px 0 56px}
@media(min-width:1024px){.cat-hero{padding:40px 0 88px}}
.hero-grid{display:grid;gap:40px;margin-top:28px}
@media(min-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:64px;align-items:center;margin-top:36px}
}
.hero-side{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:6px 24px;
  transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.hero-side:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.side-item{display:flex;flex-direction:column;gap:4px;padding:20px 0;border-top:1px solid var(--line)}
.side-item:first-child{border-top:0}
.side-k{font-size:15px;font-weight:700;color:var(--brand);letter-spacing:.01em}
.side-v{font-size:13px;line-height:1.7;color:var(--ink-2)}

/* ============ 图文交替 ============ */
.zig{display:grid;gap:28px;align-items:center}
.zig + .zig{margin-top:56px;padding-top:56px;border-top:1px solid var(--line)}
@media(min-width:1024px){
  .zig{grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:64px}
  .zig + .zig{margin-top:88px;padding-top:88px}
  .zig:nth-child(even) .zig-media{order:2}
}
.media-frame{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--line);box-shadow:var(--sh-1);background:var(--surface);
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.media-frame:hover img{transform:scale(1.03)}
.ratio-32{aspect-ratio:3/2}
.ratio-43{aspect-ratio:4/3}

.point-list{margin-top:22px;display:flex;flex-direction:column;gap:14px}
.point-list li{display:flex;gap:12px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.point-list svg{flex:none;margin-top:5px;color:var(--aurora)}

/* ============ 保障条 ============ */
.guard{background:var(--dark);color:#fff;padding:40px 0}
@media(min-width:1024px){.guard{padding:48px 0}}
.guard-grid{display:grid;grid-template-columns:1fr;gap:0}
@media(min-width:768px){.guard-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.guard-grid{grid-template-columns:repeat(4,1fr)}}
.guard-item{padding:20px 0;border-top:1px solid rgba(255,255,255,.14)}
@media(min-width:768px){
  .guard-item{padding:8px 24px;border-top:0;border-left:1px solid rgba(255,255,255,.14)}
  .guard-item:nth-child(odd){border-left:0;padding-left:0}
}
@media(min-width:1024px){
  .guard-item{border-left:1px solid rgba(255,255,255,.14);padding:4px 24px}
  .guard-item:first-child{border-left:0;padding-left:0}
}
.guard-ico{color:var(--accent);margin-bottom:12px}
.guard-k{font-size:15px;font-weight:700;letter-spacing:.02em;color:#fff}
.guard-v{margin-top:8px;font-size:12px;line-height:1.7;color:rgba(255,255,255,.6)}

/* ============ FAQ ============ */
.faq-wrap{display:grid;gap:32px}
@media(min-width:1024px){.faq-wrap{grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:64px}}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  position:relative;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;font-size:20px;line-height:1;color:var(--brand);
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.faq-item[open] summary::after{content:"−";color:var(--accent)}
.faq-item summary:hover{color:var(--brand-600)}
.faq-body{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:680px}

/* ============ 底部转化条 ============ */
.cta{
  position:relative;background:var(--dark);color:#fff;padding:56px 0;
  background-image:linear-gradient(rgba(20,17,42,.86),rgba(20,17,42,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
@media(min-width:1024px){.cta{padding:80px 0}}
.cta-grid{display:grid;gap:28px}
@media(min-width:1024px){.cta-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:center}}
.cta-title{font-size:24px;line-height:1.35;font-weight:700;color:#fff;letter-spacing:-.01em}
@media(min-width:1024px){.cta-title{font-size:30px}}
.cta-text{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.72);max-width:520px}
.form-inline{display:flex;flex-wrap:wrap;gap:12px}
.input{
  flex:1 1 240px;min-width:0;height:48px;padding:0 16px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22);color:#fff;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.input::placeholder{color:rgba(255,255,255,.5)}
.input:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.12)}
.input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.form-note{margin-top:14px;font-size:12px;line-height:1.7;color:rgba(255,255,255,.55)}
.form-note a{color:rgba(255,255,255,.8);border-bottom:1px solid rgba(255,255,255,.3)}
.form-note a:hover{color:var(--accent);border-color:var(--accent)}
@media(max-width:520px){.form-inline .btn{width:100%}}

/* ============ 页脚 ============ */
.footer{background:var(--dark);color:rgba(255,255,255,.72);padding:56px 0 28px}
@media(min-width:1024px){.footer{padding:72px 0 32px}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:40px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.footer-brand strong{font-size:20px;font-weight:800;letter-spacing:.06em}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);color:var(--accent)}
.footer-slogan{margin:0;font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:340px}
.footer-title{font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.48);margin-bottom:16px}
.footer-list{display:flex;flex-direction:column;gap:12px;font-size:14px}
.footer-list a{color:rgba(255,255,255,.72)}
.footer-list a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  box-shadow:0 -10px 24px -20px rgba(201,151,63,.9);
  font-size:13px;color:rgba(255,255,255,.45);
}
.divider{width:1px;height:12px;background:rgba(255,255,255,.2)}
.footer-bottom-links{display:flex;gap:20px;margin-left:auto}
.footer-bottom-links a:hover{color:var(--accent)}
@media(max-width:640px){.footer-bottom-links{margin-left:0;flex-wrap:wrap}}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  .media-frame:hover img{transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
    --bg:#FAF8F4;
    --surface:#FFFFFF;
    --dark:#14112A;
    --ink:#171528;
    --ink-2:#5A5570;
    --ink-3:#8B8699;
    --brand:#2E2560;
    --brand-600:#453A8C;
    --brand-soft:#EDE9F7;
    --accent:#C9973F;
    --accent-soft:#F6EEDD;
    --aurora:#3C8F86;
    --success:#2F7D63;
    --warn:#C2703A;
    --danger:#B4433A;
    --line:#E6E2DC;
    --radius-card:4px;
    --radius-btn:2px;
    --shadow-1:0 1px 2px rgba(23,21,40,.04);
    --shadow-2:0 14px 36px -14px rgba(23,21,40,.22);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  html body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    font-variant-numeric:tabular-nums;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  h1,h2,h3,h4,p,figure{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px}

  .shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
  @media (min-width:1440px){.shell{max-width:1280px}}
  @media (max-width:520px){.shell{padding:0 20px}}

  .page{padding-left:220px;min-height:100vh;display:flex;flex-direction:column}
  .page-main{flex:1 1 auto}
  @media (max-width:1023px){.page{padding-left:0}}

  /* 左侧竖向导航 */
  .sidenav{
    position:fixed;top:0;bottom:0;left:0;width:220px;z-index:60;
    background:var(--brand);color:#fff;display:flex;flex-direction:column;
    padding:24px 0 20px;
  }
  .sidenav-brand{
    display:flex;align-items:center;gap:12px;padding:0 20px 22px;
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .brand-mark{
    width:34px;height:34px;flex:0 0 auto;border-radius:50%;
    background:var(--accent-soft);color:var(--brand);
    display:flex;align-items:center;justify-content:center;
  }
  .brand-text strong{display:block;font-size:17px;font-weight:800;letter-spacing:.08em;line-height:1.2}
  .brand-text span{display:block;font-size:11px;letter-spacing:.08em;color:rgba(255,255,255,.62);margin-top:3px}
  .sidenav-nav{display:flex;flex-direction:column;flex:1 1 auto;padding:18px 0;overflow-y:auto}
  .sidenav-link{
    position:relative;display:flex;align-items:center;gap:10px;
    padding:13px 20px;font-size:14px;color:rgba(255,255,255,.72);
    border-left:3px solid transparent;
    transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease);
  }
  .sidenav-link .dot{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.35);transition:background 200ms var(--ease)}
  .sidenav-link:hover{color:#fff;background:rgba(255,255,255,.07)}
  .sidenav-link:hover .dot{background:var(--accent)}
  .sidenav-link.is-active{color:#fff;background:rgba(255,255,255,.1);border-left-color:var(--accent);font-weight:600}
  .sidenav-link.is-active .dot{background:var(--accent)}
  .sidenav-cta{
    margin:16px 16px 0;height:44px;display:flex;align-items:center;justify-content:center;
    border:1px solid var(--accent);color:var(--accent);border-radius:var(--radius-btn);
    font-size:14px;letter-spacing:.06em;
    transition:background 200ms var(--ease),color 200ms var(--ease);
  }
  .sidenav-cta:hover{background:var(--accent);color:#241C10}

  /* 移动端顶栏 */
  .topbar{
    display:none;position:sticky;top:0;z-index:60;height:56px;
    align-items:center;justify-content:space-between;
    padding:0 20px;background:var(--bg);border-bottom:1px solid var(--line);
  }
  @media (max-width:1023px){.topbar{display:flex}}
  .topbar-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:800;letter-spacing:.06em}
  .burger{
    width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);
    background:var(--surface);display:flex;align-items:center;justify-content:center;cursor:pointer;
    transition:background 200ms var(--ease),border-color 200ms var(--ease);
  }
  .burger:hover{background:var(--brand-soft);border-color:var(--brand-soft)}

  .scrim{
    position:fixed;inset:0;background:rgba(20,17,42,.46);z-index:70;
    opacity:0;pointer-events:none;transition:opacity 240ms var(--ease);
  }
  .scrim.is-open{opacity:1;pointer-events:auto}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;z-index:80;
    background:var(--surface);display:flex;flex-direction:column;
    transform:translateX(100%);transition:transform 240ms var(--ease);
  }
  .drawer.is-open{transform:none}
  .drawer-head{
    height:56px;display:flex;align-items:center;justify-content:space-between;
    padding:0 20px;border-bottom:1px solid var(--line);font-weight:800;letter-spacing:.06em;
  }
  .drawer-close{
    width:36px;height:36px;border:1px solid var(--line);border-radius:var(--radius-btn);
    background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center;
  }
  .drawer-nav{flex:1 1 auto;overflow-y:auto}
  .drawer-nav a{
    display:flex;align-items:center;justify-content:space-between;
    height:48px;padding:0 20px;font-size:15px;color:var(--ink-2);
    border-bottom:1px solid var(--line);
  }
  .drawer-nav a.is-active{color:var(--brand);font-weight:700;background:var(--brand-soft)}
  .drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line)}
  body.no-scroll{overflow:hidden}

  /* 面包屑 */
  .crumb{
    display:flex;align-items:center;flex-wrap:wrap;gap:10px;
    font-size:13px;letter-spacing:.02em;color:var(--ink-3);padding:28px 0 0;
  }
  .crumb a{color:var(--ink-2);transition:color 200ms var(--ease)}
  .crumb a:hover{color:var(--brand)}
  .crumb .sep{width:1px;height:11px;background:var(--line)}

  /* Hero */
  .hero{padding:40px 0 72px}
  .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.16em;color:var(--aurora);font-weight:600;
  }
  .eyebrow::before{content:"";width:22px;height:1px;background:var(--aurora)}
  h1{
    font-size:56px;line-height:1.12;font-weight:800;letter-spacing:-.02em;
    margin-top:16px;
  }
  .hero-lead{margin-top:20px;font-size:17px;line-height:1.85;color:var(--ink-2);max-width:620px}
  .btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
  .kpi-row{display:flex;margin-top:38px;padding-top:22px;border-top:1px solid var(--line)}
  .kpi{flex:1 1 0;padding-right:20px;border-right:1px solid var(--line)}
  .kpi:last-child{border-right:0;padding-right:0}
  .kpi b{display:block;font-size:21px;font-weight:800;letter-spacing:-.01em;line-height:1.3}
  .kpi span{display:block;font-size:12px;color:var(--ink-3);letter-spacing:.06em;margin-top:4px}
  .hero-media{
    border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
    background:var(--surface);box-shadow:var(--shadow-1);
  }
  .hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
  @media (max-width:1023px){
    h1{font-size:42px}
    .hero{padding:32px 0 56px}
    .hero-grid{grid-template-columns:1fr;gap:32px}
  }
  @media (max-width:600px){
    h1{font-size:34px;line-height:1.24}
    .kpi-row{flex-wrap:wrap;gap:18px 0}
    .kpi{flex:1 1 50%;border-right:0;padding-right:0}
    .kpi:nth-child(2){border-right:0}
  }

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;letter-spacing:.02em;
    border:1px solid transparent;cursor:pointer;text-align:center;
    transition:background 200ms var(--ease),color 200ms var(--ease),
               border-color 200ms var(--ease),transform 200ms var(--ease),
               box-shadow 200ms var(--ease);
  }
  .btn-primary{background:var(--brand);color:#fff}
  .btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);box-shadow:var(--shadow-2)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{border-color:var(--brand);color:var(--brand);background:transparent}
  .btn-ghost:hover{background:var(--brand-soft)}
  .btn-accent{position:relative;background:var(--accent-soft);border-color:var(--accent);color:#3B2C10}
  .btn-accent::after{
    content:"";position:absolute;left:24px;right:24px;bottom:9px;height:1px;background:var(--accent);
    transform:scaleX(0);transform-origin:left;transition:transform 240ms var(--ease),background 240ms var(--ease);
  }
  .btn-accent:hover{background:var(--accent);color:#241C10}
  .btn-accent:hover::after{background:#241C10;transform:scaleX(1)}
  .btn-sm{height:40px;padding:0 18px;font-size:14px}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
    border-bottom:1px solid transparent;transition:border-color 200ms var(--ease),color 200ms var(--ease);
  }
  .link-arrow:hover{border-bottom-color:var(--brand)}

  /* 板块 */
  .section{padding:96px 0}
  .section-alt{background:var(--surface)}
  .section-dark{background:var(--dark);color:#fff}
  .section-head{max-width:760px;margin-bottom:44px}
  .section-head h2{font-size:32px;line-height:1.28;font-weight:700;letter-spacing:-.01em;margin-top:12px}
  .section-head p{margin-top:14px;font-size:16px;color:var(--ink-2);line-height:1.85}
  @media (max-width:1023px){
    .section{padding:56px 0}
    .section-head h2{font-size:24px}
    .section-head{margin-bottom:32px}
  }

  /* 时间轴（编号步骤） */
  .timeline{border-top:1px solid var(--line)}
  .tl-item{
    display:grid;grid-template-columns:110px 1fr;gap:36px;
    padding:38px 0;border-bottom:1px solid var(--line);
  }
  .tl-col{position:relative}
  .tl-index{
    display:block;font-size:40px;line-height:1;font-weight:800;letter-spacing:-.02em;color:var(--brand);
  }
  .tl-col::after{
    content:"";position:absolute;left:9px;top:58px;bottom:-38px;width:1px;background:var(--line);
  }
  .tl-item:last-child .tl-col::after{display:none}
  .tl-body{display:grid;grid-template-columns:1fr 220px;gap:36px;align-items:start}
  .tl-body h3{font-size:19px;font-weight:700;letter-spacing:-.01em}
  .tl-body p{margin-top:10px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:640px}
  .tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
  .tl-thumb{
    border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--surface);
  }
  .tl-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover}
  @media (max-width:767px){
    .tl-item{grid-template-columns:1fr;gap:14px;padding:28px 0}
    .tl-col::after{display:none}
    .tl-index{font-size:28px}
    .tl-body{grid-template-columns:1fr;gap:20px}
    .tl-thumb{max-width:300px}
  }

  /* 标签 */
  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
    font-size:12px;letter-spacing:.04em;background:var(--brand-soft);color:var(--brand);
  }
  .tag-aurora{background:rgba(60,143,134,.12);color:var(--aurora)}
  .tag-accent{background:var(--accent-soft);color:#8A6520}

  /* 设备能力卡 */
  .cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .cap-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:30px 26px;box-shadow:var(--shadow-1);
    transition:transform 200ms var(--ease),box-shadow 200ms var(--ease);
  }
  .cap-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
  .cap-icon{
    width:42px;height:42px;border-radius:var(--radius-btn);background:var(--brand-soft);color:var(--brand);
    display:flex;align-items:center;justify-content:center;margin-bottom:18px;
  }
  .cap-card h3{font-size:18px;font-weight:700;letter-spacing:-.01em}
  .cap-card > p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--ink-2)}
  .cap-list{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);display:grid;gap:10px}
  .cap-list li{display:flex;gap:8px;font-size:13px;line-height:1.7;color:var(--ink-2)}
  .cap-list svg{flex:0 0 auto;margin-top:5px;color:var(--aurora)}
  .cap-foot{margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px}
  @media (max-width:1023px){.cap-grid{grid-template-columns:1fr 1fr}}
  @media (max-width:640px){.cap-grid{grid-template-columns:1fr}}

  /* 保障条 */
  .guard{background:var(--dark);color:#fff}
  .guard-grid{display:grid;grid-template-columns:repeat(4,1fr)}
  .guard-item{padding:36px 26px;border-right:1px solid rgba(255,255,255,.1)}
  .guard-item:first-child{padding-left:0}
  .guard-item:last-child{border-right:0}
  .guard-item b{display:block;font-size:16px;font-weight:700;letter-spacing:.03em}
  .guard-item span{display:block;margin-top:8px;font-size:12px;line-height:1.75;color:rgba(255,255,255,.62)}
  @media (max-width:767px){
    .guard-grid{grid-template-columns:1fr 1fr}
    .guard-item{padding:24px 20px}
    .guard-item:nth-child(odd){padding-left:0}
    .guard-item:nth-child(even){border-right:0}
    .guard-item:nth-child(3),.guard-item:nth-child(4){border-top:1px solid rgba(255,255,255,.1)}
  }

  /* FAQ */
  .faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px}
  .faq-aside h2{font-size:32px;line-height:1.28;font-weight:700;letter-spacing:-.01em;margin-top:12px}
  .faq-aside p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--ink-2)}
  .faq-actions{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px}
  .faq-list details{border-bottom:1px solid var(--line)}
  .faq-list details:first-child{border-top:1px solid var(--line)}
  .faq-list summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 2px;font-size:16px;font-weight:600;cursor:pointer;list-style:none;
  }
  .faq-list summary::-webkit-details-marker{display:none}
  .faq-mark{position:relative;width:16px;height:16px;flex:0 0 auto}
  .faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--brand);border-radius:1px}
  .faq-mark::before{left:0;top:7px;width:16px;height:2px}
  .faq-mark::after{left:7px;top:0;width:2px;height:16px;transition:transform 200ms var(--ease)}
  details[open] .faq-mark::after{transform:scaleY(0)}
  .faq-answer{padding:0 2px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:720px}
  @media (max-width:1023px){
    .faq-grid{grid-template-columns:1fr;gap:28px}
    .faq-aside h2{font-size:24px}
  }

  /* 底部转化条 */
  .cta{background:var(--dark);color:#fff;padding:76px 0}
  .cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
  .cta h2{font-size:32px;line-height:1.28;font-weight:700;letter-spacing:-.01em;margin-top:12px}
  .cta p{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.7);max-width:520px}
  .lead-label{display:block;font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.6);margin-bottom:10px}
  .lead-row{display:flex;gap:12px}
  .lead-row input{
    flex:1 1 auto;height:48px;padding:0 16px;border-radius:var(--radius-btn);
    background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22);color:#fff;font-size:15px;
    transition:border-color 200ms var(--ease),background 200ms var(--ease);
  }
  .lead-row input::placeholder{color:rgba(255,255,255,.45)}
  .lead-row input:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.12)}
  .form-note{margin-top:14px;font-size:12px;line-height:1.8;color:rgba(255,255,255,.55)}
  .form-note a{color:var(--accent);border-bottom:1px solid rgba(201,151,63,.45)}
  .form-note a:hover{border-bottom-color:var(--accent)}
  @media (max-width:1023px){
    .cta{padding:56px 0}
    .cta-grid{grid-template-columns:1fr;gap:32px}
    .cta h2{font-size:24px}
  }
  @media (max-width:640px){
    .lead-row{flex-direction:column}
    .lead-row .btn{width:100%}
  }

  /* 页脚 */
  .footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 28px}
  .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:44px}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;letter-spacing:.08em}
  .footer-slogan{margin-top:16px;font-size:13px;line-height:1.9;color:rgba(255,255,255,.6);max-width:340px}
  .footer-title{font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.55);margin-bottom:16px}
  .footer-list{display:grid;gap:11px}
  .footer-list a{font-size:14px;color:rgba(255,255,255,.78);transition:color 200ms var(--ease)}
  .footer-list a:hover{color:var(--accent)}
  .footer-bottom{
    margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:12px;color:rgba(255,255,255,.5);
  }
  .footer-bottom .divider{width:1px;height:12px;background:rgba(255,255,255,.2)}
  .footer-bottom-links{display:flex;gap:18px;margin-left:auto}
  .footer-bottom-links a:hover{color:var(--accent)}
  @media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:34px}}
  @media (max-width:560px){
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom-links{margin-left:0}
  }

  /* 进入动效 */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity 400ms var(--ease),transform 400ms var(--ease)}
  .reveal.is-in{opacity:1;transform:none}
  .deco-dots{
    background-image:radial-gradient(rgba(23,21,40,.04) 1px,transparent 1px);
    background-size:16px 16px;
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important}
    .reveal{opacity:1;transform:none}
    html{-webkit-scroll-behavior:auto;scroll-behavior:auto}
  }