/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#2B2350;
  --c-primary-lt:#3C3270;
  --c-ink:#14112B;
  --c-ink-2:#1D1840;
  --c-cyan:#21C7A8;
  --c-amber:#F2A63B;
  --bg:#F6F4FA;
  --surface:#FFFFFF;
  --line:#E4E0EF;
  --text:#2A2740;
  --text-2:#6B6785;
  --text-3:#8E88B0;
  --ok:#2E9E76;
  --warn:#D6464B;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(20,17,43,.06);
  --sh-md:0 6px 18px -6px rgba(20,17,43,.12);
  --sh-lg:0 18px 40px -18px rgba(20,17,43,.22);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ease:cubic-bezier(.2,.7,.3,1);
}
/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16.5px;line-height:1.85;letter-spacing:.01em;-webkit-font-smoothing:antialiased}
body.lock{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(24px,2.6vw,32px);line-height:1.32}
h3{font-size:20px;line-height:1.45}
h4{font-size:17px;line-height:1.5;font-weight:600}
p{margin:0}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:2px;border-radius:4px}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--alt{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:48px}
.section-head p{margin-top:14px;color:var(--text-2);font-size:17px;line-height:1.9;max-width:62ch}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-primary);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--c-cyan);border-radius:2px}
/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15.5px;font-weight:600;line-height:1;transition:transform .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);white-space:nowrap}
.btn:active{transform:scale(.98)}
.btn-amber{background:var(--c-amber);color:var(--c-ink);box-shadow:var(--sh-sm)}
.btn-amber:hover{background:#F7B455;transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-primary{background:var(--c-primary);color:#FFFFFF}
.btn-primary:hover{background:var(--c-primary-lt);transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-ghost{border:1px solid var(--c-primary);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:rgba(43,35,80,.06);transform:translateY(-1px)}
.btn-outline-light{border:1px solid rgba(244,242,255,.45);color:#F4F2FF}
.btn-outline-light:hover{background:rgba(244,242,255,.12);transform:translateY(-1px)}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:15px}
.btn-link span{transition:transform .2s var(--ease)}
.btn-link:hover span{transform:translateX(4px)}
.btn-block{width:100%}
/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);font-size:13px;font-weight:600;line-height:1;border:1px solid rgba(43,35,80,.35);background:rgba(43,35,80,.06);color:var(--c-primary)}
.badge--cyan{border-color:rgba(33,199,168,.45);background:rgba(33,199,168,.1);color:#137F6C}
.badge--amber{border-color:rgba(242,166,59,.5);background:rgba(242,166,59,.12);color:#946018}
.badge--light{border-color:rgba(244,242,255,.35);background:rgba(244,242,255,.08);color:#F4F2FF}
/* ============ 顶部信息条 ============ */
.topbar{background:var(--c-ink);height:40px;display:flex;align-items:center}
.topbar-in{display:flex;align-items:center;justify-content:space-between;width:100%}
.topbar-site{font-size:13px;color:#B9B3D6;letter-spacing:.04em}
.topbar-links{display:flex;align-items:center;gap:22px}
.topbar-links a{font-size:13px;color:#B9B3D6;transition:color .2s var(--ease)}
.topbar-links a:hover{color:#FFFFFF}
/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .25s var(--ease),height .25s var(--ease)}
.site-header.is-compact{box-shadow:var(--sh-md)}
.nav-in{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s var(--ease)}
.site-header.is-compact .nav-in{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:34px;height:34px;flex:0 0 auto}
.logo-text{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:.01em}
.nav-main{display:flex;align-items:center;gap:26px}
.nav-main a{position:relative;font-size:16px;font-weight:600;color:var(--text);padding:6px 0;transition:color .2s var(--ease)}
.nav-main a::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;background:var(--c-cyan);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease)}
.nav-main a:hover{color:var(--c-primary)}
.nav-main a:hover::after{transform:scaleX(1)}
.nav-main a.active{color:var(--c-primary)}
.nav-main a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-actions .btn{height:40px;padding:0 18px;font-size:14.5px}
.hamburger{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:var(--r-btn)}
.hamburger span{display:block;width:20px;height:2px;background:var(--c-primary);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease)}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* ============ 抽屉 ============ */
.drawer{position:fixed;inset:0;z-index:90;background:var(--surface);display:flex;flex-direction:column;transform:translateX(100%);transition:transform .3s var(--ease);visibility:hidden}
.drawer.open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 18px;background:var(--c-ink);color:#F4F2FF}
.drawer-title{font-size:15px;font-weight:600}
.drawer-close{width:40px;height:40px;font-size:24px;line-height:1;color:#F4F2FF;border-radius:var(--r-btn)}
.drawer-close:hover{background:rgba(244,242,255,.12)}
.drawer-nav{display:flex;flex-direction:column;padding:8px 18px}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;height:56px;font-size:16.5px;font-weight:600;border-bottom:1px solid var(--line);color:var(--text)}
.drawer-nav a::after{content:"›";font-size:20px;color:var(--text-3)}
.drawer-nav a.active{color:var(--c-primary)}
.drawer-nav a.active::after{color:var(--c-primary)}
.drawer-foot{margin-top:auto;padding:18px;border-top:1px solid var(--line)}
/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#F6F4FA 0%,#EFEBF8 100%);border-bottom:1px solid var(--line)}
.hero::before{content:"";position:absolute;right:-140px;top:-180px;width:640px;height:640px;border-radius:50%;border:1px solid rgba(43,35,80,.10);box-shadow:0 0 0 80px rgba(43,35,80,.03),0 0 0 160px rgba(33,199,168,.035);pointer-events:none}
.hero::after{content:"";position:absolute;left:-60px;bottom:-120px;width:280px;height:280px;border-radius:50%;border:1px dashed rgba(43,35,80,.10);pointer-events:none}
.hero-in{position:relative;display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:center;padding:76px 0 84px}
.hero-copy{max-width:600px}
.hero h1{margin:18px 0 20px}
.hero-sub{font-size:18px;line-height:1.9;color:var(--text-2);max-width:52ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-trust{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:32px;font-size:14px;color:var(--text-2)}
.hero-trust li{display:flex;align-items:center;gap:8px}
.hero-trust li+li{padding-left:16px;border-left:1px solid var(--line)}
.hero-trust .dot{width:6px;height:6px;border-radius:50%;background:var(--c-cyan);flex:0 0 auto}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-lg);transform:translateX(24px)}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);border:1px solid rgba(20,17,43,.06)}
.hero-media::after{content:"";position:absolute;inset:0;border-radius:var(--r-lg);background:linear-gradient(180deg,rgba(20,17,43,0) 45%,rgba(20,17,43,.5) 100%)}
.hero-media figcaption{position:absolute;left:20px;right:20px;bottom:16px;z-index:2;color:#F4F2FF;font-size:13px;line-height:1.6}
/* ============ 价值条 ============ */
.value-bar{background:var(--surface);border-bottom:1px solid var(--line)}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;padding:56px 0}
.value-item{padding:0 32px}
.value-item:first-child{padding-left:0}
.value-item+.value-item{border-left:1px solid var(--line)}
.value-num{font-size:28px;font-weight:800;color:var(--c-amber);line-height:1;letter-spacing:-.02em}
.value-item h3{margin:14px 0 8px;font-size:18px}
.value-item p{font-size:14px;line-height:1.75;color:var(--text-2)}
/* ============ 功能分组 ============ */
.group{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.group+.group{margin-top:72px;padding-top:72px;border-top:1px solid var(--line)}
.group--rev .group-side{order:2}
.group--rev .group-list{order:1}
.group-side h3{margin-bottom:12px}
.group-side p{color:var(--text-2);font-size:15.5px;line-height:1.85;max-width:34ch}
.group-side .btn-link{margin-top:22px}
.group-list{border-top:1px solid var(--line)}
.group-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px;min-height:88px;padding:20px 16px;border-bottom:1px solid var(--line);border-radius:var(--r-btn);transition:background-color .2s var(--ease)}
.group-row:hover{background:var(--bg)}
.group-row:hover .row-arrow{transform:translateX(4px)}
.row-index{width:32px;height:32px;border-radius:50%;background:rgba(43,35,80,.08);color:var(--c-primary);font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.row-body h4{margin-bottom:4px}
.row-body p{font-size:14px;line-height:1.7;color:var(--text-2);max-width:56ch}
.row-arrow{color:var(--c-primary);font-size:18px;transition:transform .25s var(--ease)}
/* ============ 场景 ============ */
.scene{display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:center}
.scene+.scene{margin-top:64px}
.scene--rev .scene-copy{order:2}
.scene--rev .scene-media{order:1}
.scene-copy h3{margin:12px 0 14px;font-size:24px}
.scene-copy p{color:var(--text-2);font-size:15.5px;line-height:1.9}
.scene-points{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.scene-points li{display:flex;gap:10px;font-size:15px;color:var(--text)}
.scene-points li::before{content:"";width:6px;height:6px;margin-top:11px;border-radius:50%;background:var(--c-cyan);flex:0 0 auto}
.scene-media{margin:0}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);border:1px solid rgba(20,17,43,.06);box-shadow:var(--sh-sm)}
.scene-media figcaption{margin-top:12px;font-size:13px;color:var(--text-2)}
/* ============ 案例 ============ */
.case-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.case-stack{display:grid;gap:24px}
.case-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-sm);transition:box-shadow .25s var(--ease),transform .25s var(--ease),border-color .25s var(--ease)}
.case-card:hover{box-shadow:var(--sh-lg);transform:translateY(-2px);border-color:rgba(43,35,80,.25)}
.case-quote{font-size:17px;line-height:1.75;font-weight:600;color:var(--c-primary)}
.case-card p{margin-top:12px;font-size:14.5px;line-height:1.8;color:var(--text-2)}
.case-foot{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap}
.case-from{font-size:13px;color:var(--text-3)}
.case-metric{display:flex;align-items:baseline;gap:4px;color:var(--c-amber);font-weight:800}
.case-metric .num{font-size:28px;line-height:1;letter-spacing:-.02em}
.case-metric .unit{font-size:13px;font-weight:600;color:var(--text-2)}
/* ============ 价格 ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.price-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px 26px 26px;box-shadow:var(--sh-md);display:flex;flex-direction:column;min-height:100%}
.price-card--feature{transform:scale(1.03);box-shadow:var(--sh-lg);border-color:rgba(43,35,80,.22);padding-top:36px}
.price-card--feature::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--c-primary);border-radius:var(--r-card) var(--r-card) 0 0}
.price-ribbon{position:absolute;top:-13px;left:26px;height:26px;display:inline-flex;align-items:center;padding:0 12px;border-radius:var(--r-pill);background:var(--c-amber);color:var(--c-ink);font-size:12.5px;font-weight:700}
.price-name{font-size:16px;font-weight:600;color:var(--text)}
.price-amount{display:flex;align-items:baseline;gap:6px;margin-top:14px;color:var(--c-primary)}
.price-amount .num{font-size:34px;font-weight:800;line-height:1;letter-spacing:-.02em}
.price-amount .unit{font-size:13px;color:var(--text-2)}
.price-desc{margin-top:12px;font-size:14px;line-height:1.75;color:var(--text-2)}
.price-list{margin:22px 0 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.price-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7}
.price-list .tick{flex:0 0 auto;width:16px;height:16px;margin-top:5px;border-radius:50%;background:rgba(33,199,168,.16);position:relative}
.price-list .tick::after{content:"";position:absolute;left:5px;top:2px;width:4px;height:8px;border-right:2px solid var(--ok);border-bottom:2px solid var(--ok);transform:rotate(40deg)}
.price-list li.off{color:var(--text-3)}
.price-list li.off .tick{background:#EFEDF6}
.price-list li.off .tick::after{content:"";position:absolute;left:5px;top:7px;width:6px;height:2px;background:#BDB8D2;border:0;transform:none}
.price-note{margin-top:20px;font-size:13px;color:var(--text-2)}
.price-note a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.price-note a:hover{color:var(--c-cyan)}
/* ============ 最新信息 ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.news-head p{margin-top:12px;color:var(--text-2);font-size:15.5px;max-width:52ch}
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm);transition:box-shadow .25s var(--ease),transform .25s var(--ease),border-color .25s var(--ease)}
.news-card:hover{box-shadow:var(--sh-lg);transform:translateY(-3px);border-color:rgba(43,35,80,.28)}
.news-thumb{position:relative;overflow:hidden}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid rgba(20,17,43,.06);transition:transform .4s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-thumb .badge{position:absolute;left:12px;top:12px;background:#FFFFFF}
.news-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:17px;line-height:1.5;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{margin-top:10px;font-size:14px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;margin-top:18px;font-size:13px;color:var(--text-3)}
.news-meta .arrow{color:var(--c-primary);font-size:16px;transition:transform .25s var(--ease)}
.news-card:hover .news-meta .arrow{transform:translateX(4px)}
.news-empty{border:1px dashed var(--line);background:rgba(255,255,255,.6);border-radius:var(--r-card);padding:56px 24px;text-align:center}
.news-empty p{font-size:14px;color:var(--text-2);margin-bottom:18px}
/* ============ FAQ ============ */
.faq{border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);overflow:hidden}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;gap:16px;min-height:56px;padding:16px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--text);transition:background-color .2s var(--ease)}
.faq-q:hover{background:var(--bg)}
.faq-q .q-no{font-size:13px;color:var(--text-3);flex:0 0 auto;letter-spacing:.04em}
.faq-q .q-text{flex:1}
.faq-q .q-icon{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-q .q-icon::before,.faq-q .q-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;transition:transform .2s var(--ease)}
.faq-q .q-icon::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-q .q-icon::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-item.open .q-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-in{padding:0 24px 22px 62px;font-size:15.5px;line-height:1.85;color:var(--text-2)}
/* ============ CTA ============ */
.cta-banner{position:relative;overflow:hidden;background:var(--c-ink);border-radius:0}
.cta-banner::before{content:"";position:absolute;right:-120px;top:-160px;width:520px;height:520px;border-radius:50%;border:1px solid rgba(244,242,255,.14);box-shadow:0 0 0 60px rgba(33,199,168,.06),0 0 0 120px rgba(244,242,255,.03)}
.cta-banner::after{content:"";position:absolute;inset:0;background-image:url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center;opacity:.12;pointer-events:none}
.cta-in{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;padding:72px 0;flex-wrap:wrap}
.cta-copy{max-width:640px}
.cta-copy h2{color:#F4F2FF}
.cta-copy p{margin-top:14px;color:#B9B3D6;font-size:16.5px;line-height:1.85}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:#B9B3D6}
.footer-in{display:grid;grid-template-columns:4fr 2fr 2fr 3fr;gap:40px;padding:72px 0 56px}
.footer-brand .logo-text{color:#F4F2FF}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:#B9B3D6;max-width:34ch}
.footer-brand .badge{margin-top:18px}
.footer-col h4{color:#F4F2FF;font-size:15px;margin-bottom:18px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:#B9B3D6;transition:color .2s var(--ease)}
.footer-col a:hover{color:#FFFFFF}
.footer-col p{font-size:14px;line-height:1.85;color:#B9B3D6}
.footer-bottom{border-top:1px solid #2A2450;padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8E88B0}
/* ============ 返回顶部 ============ */
.to-top{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;background:var(--c-primary);color:#FFFFFF;display:flex;align-items:center;justify-content:center;font-size:18px;box-shadow:var(--sh-md);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease),background-color .2s var(--ease)}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-primary-lt)}
/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{width:96%;max-width:1120px}
  .section{padding:80px 0}
  .hero-in{gap:40px}
  .news-grid{grid-template-columns:repeat(3,1fr)}
  .case-grid{grid-template-columns:6fr 6fr}
}
@media (max-width:1023px){
  .nav-main{gap:18px}
  .nav-main a{font-size:15px}
  .nav-actions .btn-ghost{display:none}
  .hero-in{grid-template-columns:1fr;padding:56px 0 64px}
  .hero-media{transform:none;max-width:640px}
  .group,.group--rev{grid-template-columns:1fr;gap:28px}
  .group--rev .group-side{order:1}
  .group--rev .group-list{order:2}
  .scene,.scene--rev{grid-template-columns:1fr;gap:32px}
  .scene--rev .scene-copy{order:1}
  .scene--rev .scene-media{order:2}
  .case-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:repeat(2,1fr)}
  .price-card--feature{transform:none;padding-top:28px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-in{grid-template-columns:repeat(2,1fr)}
  .cta-in{padding:56px 0}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .topbar-links a:not(:first-child){display:none}
  .nav-main,.nav-actions{display:none}
  .hamburger{display:flex}
  .value-grid{grid-template-columns:1fr;padding:40px 0;gap:28px}
  .value-item{padding:0}
  .value-item+.value-item{border-left:0;border-top:1px solid var(--line);padding-top:28px}
  .price-grid{grid-template-columns:1fr}
  .price-card--feature{transform:none}
  .news-grid{grid-template-columns:1fr}
  .news-head{align-items:flex-start}
  .group-row{grid-template-columns:auto 1fr;padding:18px 12px}
  .row-arrow{display:none}
  .faq-a-in{padding:0 18px 20px 18px}
  .faq-q{padding:16px 18px;font-size:16px}
  .cta-in{padding:48px 0;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-in{grid-template-columns:1fr;padding:56px 0 40px;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .to-top{right:16px;bottom:16px}
  .hero-media figcaption{font-size:12.5px}
  .btn{min-width:160px}
  .btn-block{min-width:0}
}
@media (max-width:479px){
  .container{padding:0 16px}
  .hero::before,.hero::after{display:none}
  .hero-trust li+li{padding-left:0;border-left:0}
  .hero-trust{flex-direction:column;align-items:flex-start;gap:10px}
  .badge{height:22px;font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .news-card:hover,.case-card:hover,.btn:hover{transform:none!important}
}

/* roulang page: article */
/* ===== 设计变量 ===== */
:root{
  --c-primary:#2B2350;
  --c-primary-lt:#3C3270;
  --c-ink:#14112B;
  --c-ink-2:#1D1840;
  --c-teal:#21C7A8;
  --c-amber:#F2A63B;
  --c-bg:#F6F4FA;
  --c-surface:#FFFFFF;
  --c-line:#E4E0EF;
  --c-muted:#6B6785;
  --c-text:#2A2740;
  --c-success:#2E9E76;
  --c-danger:#D6464B;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(20,17,43,.06);
  --sh-md:0 6px 18px -6px rgba(20,17,43,.12);
  --sh-lg:0 18px 40px -18px rgba(20,17,43,.22);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --pad-sec:96px;
}
/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--c-teal);}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-primary);letter-spacing:-.01em;}
p{margin:0 0 1.1em;}
ul,ol{margin:0 0 1.1em;padding-left:2em;}
li{margin-bottom:.5em;}
:focus-visible{outline:2px solid var(--c-teal);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(33,199,168,.24);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}
/* ===== 顶部信息条 ===== */
.topbar{background:var(--c-ink);color:#B9B3D6;font-size:13px;line-height:40px;}
.topbar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;height:40px;}
.topbar-site{letter-spacing:.02em;color:#B9B3D6;white-space:nowrap;}
.topbar-links{display:flex;align-items:center;gap:20px;}
.topbar-links a{color:#B9B3D6;font-size:13px;}
.topbar-links a:hover{color:#fff;}
/* ===== 主导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t),height var(--t);
}
.header-in{display:flex;align-items:center;gap:28px;height:72px;transition:height var(--t);}
.site-header.is-compact .header-in{height:60px;}
.site-header.is-compact{box-shadow:var(--sh-md);}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{width:34px;height:34px;flex:none;}
.logo-text{font-size:18px;font-weight:700;color:var(--c-primary);letter-spacing:.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto;}
.main-nav a{
  position:relative;font-size:16px;font-weight:600;color:var(--c-text);
  padding:6px 0;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;
  background:var(--c-teal);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.main-nav a:hover{color:var(--c-primary);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a[aria-current="page"]{color:var(--c-primary);}
.main-nav a[aria-current="page"]::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:var(--c-surface);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-primary);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-primary);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 18px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn--primary{background:var(--c-amber);color:var(--c-ink);box-shadow:var(--sh-sm);}
.btn--primary:hover{background:#F7B558;transform:translateY(-1px);color:var(--c-ink);box-shadow:var(--sh-md);}
.btn--primary:active{transform:translateY(0) scale(.98);}
.btn--solid{background:var(--c-primary);color:#F4F2FF;}
.btn--solid:hover{background:var(--c-primary-lt);color:#fff;transform:translateY(-1px);}
.btn--ghost{border:1px solid var(--c-primary);color:var(--c-primary);background:transparent;}
.btn--ghost:hover{background:rgba(43,35,80,.06);color:var(--c-primary);}
.btn--ghost-light{border:1px solid rgba(244,242,255,.5);color:#F4F2FF;background:transparent;}
.btn--ghost-light:hover{background:rgba(244,242,255,.1);color:#fff;}
.btn--lg{height:48px;padding:0 26px;font-size:16px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--c-primary);}
.link-arrow svg{transition:transform var(--t);}
.link-arrow:hover svg{transform:translateX(4px);}
/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;line-height:1;
  border:1px solid rgba(43,35,80,.28);color:var(--c-primary);background:rgba(43,35,80,.06);
  white-space:nowrap;
}
.badge--teal{border-color:rgba(33,199,168,.4);color:#12836F;background:rgba(33,199,168,.1);}
.badge--light{border-color:rgba(244,242,255,.32);color:#D8D3F2;background:rgba(244,242,255,.06);}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;color:var(--c-primary);
  border:1px solid var(--c-line);background:var(--c-surface);
  transition:border-color var(--t),color var(--t),background var(--t);
}
.tag:hover{border-color:var(--c-teal);color:#12836F;background:rgba(33,199,168,.07);}
/* ===== 文章头区 ===== */
.article-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#F1EEF9 0%,var(--c-bg) 100%);
  border-bottom:1px solid var(--c-line);
  padding:44px 0 52px;
}
.article-hero::before{
  content:"";position:absolute;right:-120px;top:-160px;width:520px;height:520px;
  border-radius:50%;border:1px solid rgba(43,35,80,.1);
  box-shadow:0 0 0 60px rgba(43,35,80,.035);
  pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;right:60px;bottom:-40px;width:220px;height:220px;
  border-radius:50%;border:1px dashed rgba(33,199,168,.22);pointer-events:none;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-muted);margin-bottom:26px;position:relative;z-index:1;
}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-teal);}
.breadcrumb .sep{color:#B2ADC9;}
.breadcrumb .current{color:#8E88B0;}
.article-head{position:relative;z-index:1;max-width:900px;}
.article-head h1{
  font-size:clamp(28px,4vw,44px);
  line-height:1.28;
  font-weight:800;
  letter-spacing:-.01em;
  margin:18px 0 20px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--c-muted);
}
.article-meta .dot{color:#C6C1DA;}
.article-meta strong{color:var(--c-primary);font-weight:600;}
.rule-short{width:64px;height:3px;border-radius:3px;background:var(--c-primary);margin:26px 0 0;}
/* ===== 文章主体 ===== */
.article-main{padding:var(--pad-sec) 0 0;}
.article-wrap{max-width:760px;margin:0 auto;}
.article-body{
  font-size:16.5px;line-height:1.85;color:var(--c-text);
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:clamp(22px,2.4vw,28px);line-height:1.35;font-weight:700;
  margin:2em 0 .6em;padding-top:.1em;
}
.article-body h2::before{
  content:"";display:block;width:32px;height:3px;border-radius:3px;
  background:var(--c-primary);margin-bottom:14px;
}
.article-body h3{font-size:20px;line-height:1.45;font-weight:700;margin:1.6em 0 .5em;}
.article-body h4{font-size:17px;line-height:1.5;font-weight:600;margin:1.4em 0 .4em;}
.article-body p{margin:0 0 1.1em;}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body a:hover{color:var(--c-teal);text-decoration-thickness:2px;}
.article-body ul{list-style:none;padding-left:1.4em;}
.article-body ul > li{position:relative;}
.article-body ul > li::before{
  content:"";position:absolute;left:-1.2em;top:.72em;width:8px;height:8px;
  background:var(--c-teal);border-radius:2px;
}
.article-body ol{padding-left:1.6em;}
.article-body ol > li::marker{color:var(--c-primary);font-weight:700;}
.article-body blockquote{
  margin:1.6em 0;padding:20px 24px;
  background:var(--c-bg);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-card) var(--r-card) 0;color:var(--c-primary);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  max-width:100%;height:auto;border-radius:var(--r-card);
  border:1px solid rgba(20,17,43,.06);margin:1.6em 0 8px;
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;line-height:1.65;color:var(--c-muted);}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;
}
.article-body .table-scroll{overflow-x:auto;margin:1.6em 0;border:1px solid var(--c-line);border-radius:var(--r-card);}
.article-body th{
  background:var(--c-ink);color:#F4F2FF;font-weight:600;text-align:left;
  padding:12px 16px;white-space:nowrap;
}
.article-body td{padding:12px 16px;border-top:1px solid var(--c-line);}
.article-body tbody tr:hover{background:var(--c-bg);}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2.4em 0;}
.article-body code{
  background:rgba(43,35,80,.07);border-radius:6px;padding:2px 7px;
  font-size:.92em;color:var(--c-primary);
}
.article-body pre{
  background:var(--c-ink);color:#EDEAFB;padding:20px;border-radius:var(--r-card);
  overflow-x:auto;font-size:14px;line-height:1.7;margin:1.6em 0;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-body strong{color:var(--c-primary);font-weight:700;}
/* 内容未找到 */
.empty-state{
  border:1px dashed var(--c-line);background:#FBF9FE;border-radius:var(--r-card);
  padding:56px 28px;text-align:center;
}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--c-muted);font-size:15px;margin-bottom:22px;}
/* ===== 标签区 / 返回条 ===== */
.article-tags{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:48px;padding-top:28px;border-top:1px solid var(--c-line);
}
.article-tags .label{font-size:13px;color:var(--c-muted);margin-right:4px;}
.back-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:28px;padding:18px 22px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-sm);
}
.back-bar .links{display:flex;flex-wrap:wrap;gap:18px;font-size:15px;font-weight:600;}
/* ===== 通用板块 ===== */
.section{padding:var(--pad-sec) 0;}
.section--tight{padding:64px 0 var(--pad-sec);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.32;font-weight:700;}
.section-head p{margin:10px 0 0;font-size:16px;color:var(--c-muted);max-width:62ch;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
/* ===== 相关推荐卡 ===== */
.card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(43,35,80,.3);}
.card-thumb{position:relative;aspect-ratio:16/9;background:#F0EDF7;overflow:hidden;}
.card-thumb img{width:100%;height:100%;object-fit:cover;}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;line-height:1.5;font-weight:700;}
.card-body p{margin:0;font-size:14px;line-height:1.7;color:var(--c-muted);}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:12px;font-size:13px;color:var(--c-muted);}
.card-foot .arrow{color:var(--c-primary);transition:transform var(--t);}
.card:hover .card-foot .arrow{transform:translateX(4px);}
/* ===== CTA 横幅 ===== */
.cta-band{
  position:relative;overflow:hidden;background:var(--c-ink);color:#F4F2FF;
  border-radius:var(--r-lg);padding:56px 48px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band::before{
  content:"";position:absolute;left:-90px;top:-120px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(33,199,168,.18);box-shadow:0 0 0 70px rgba(33,199,168,.05);pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;right:40px;bottom:-120px;width:300px;height:300px;border-radius:50%;
  border:1px dashed rgba(242,166,59,.2);pointer-events:none;
}
.cta-band .cta-text{position:relative;z-index:1;max-width:640px;}
.cta-band h2{color:#F4F2FF;font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:12px;}
.cta-band p{color:#B9B3D6;margin:0;font-size:16px;}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:14px;}
/* ===== 页脚 ===== */
.site-footer{background:var(--c-ink);color:#B9B3D6;margin-top:var(--pad-sec);padding:72px 0 0;font-size:14.5px;}
.footer-in{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:56px;}
.footer-brand .logo-text{color:#F4F2FF;}
.footer-brand p{color:#B9B3D6;font-size:14.5px;line-height:1.8;margin:18px 0 18px;max-width:34ch;}
.footer-col h4{color:#F4F2FF;font-size:15px;margin-bottom:16px;font-weight:700;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:#B9B3D6;font-size:14.5px;}
.footer-col a:hover{color:#fff;}
.footer-col p{color:#B9B3D6;font-size:14px;line-height:1.8;margin:0;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid #2A2450;padding:22px 24px 26px;font-size:13px;color:#8E88B0;
}
/* ===== 返回顶部 ===== */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-md);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--t),transform var(--t),visibility var(--t),background var(--t);z-index:80;
}
.to-top.show{opacity:1;visibility:visible;transform:none;}
.to-top:hover{background:var(--c-primary-lt);}
/* ===== 响应式 ===== */
@media (max-width:1279px){
  :root{--pad-sec:80px;}
  .container{max-width:1080px;}
  .main-nav{gap:18px;}
  .main-nav a{font-size:15px;}
}
@media (max-width:1023px){
  :root{--pad-sec:72px;}
  .main-nav{gap:14px;}
  .main-nav a{font-size:14.5px;letter-spacing:0;}
  .header-actions .btn--ghost{display:none;}
  .footer-in{grid-template-columns:1fr 1fr;gap:36px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:860px){
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;left:0;right:0;top:0;bottom:0;z-index:90;
    display:flex;flex-direction:column;align-items:stretch;gap:0;margin:0;
    background:var(--c-surface);padding:84px 24px 32px;
    transform:translateX(100%);transition:transform var(--t);overflow-y:auto;
  }
  .main-nav.open{transform:none;}
  .main-nav a{
    display:flex;align-items:center;justify-content:flex-end;
    height:56px;font-size:17px;border-bottom:1px solid var(--c-line);padding:0;
  }
  .main-nav a::after{display:none;}
  .main-nav a[aria-current="page"]{color:var(--c-primary);}
  .header-actions{margin-left:auto;}
  .header-actions .btn--primary{display:none;}
  .topbar-links a:not(:first-child){display:none;}
  .cta-band{padding:40px 26px;}
  .article-hero{padding:32px 0 40px;}
  .article-hero::before,.article-hero::after{display:none;}
}
@media (max-width:767px){
  :root{--pad-sec:56px;}
  .container{padding:0 18px;}
  body{font-size:16px;}
  .grid-3{grid-template-columns:1fr;}
  .footer-in{grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
  .site-footer{padding-top:56px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;min-width:160px;}
  .section-head{margin-bottom:26px;}
  .back-bar{flex-direction:column;align-items:flex-start;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:479px){
  .container{padding:0 16px;}
  .logo-text{font-size:16px;}
  .header-in{gap:14px;height:64px;}
  .article-head h1{font-size:28px;}
  .article-meta{font-size:12.5px;}
  .badge{font-size:12px;height:22px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --brand:#2B2350;
  --brand-light:#3C3270;
  --ink:#14112B;
  --ink-2:#1D1840;
  --cyan:#21C7A8;
  --amber:#F2A63B;
  --bg:#F6F4FA;
  --card:#FFFFFF;
  --line:#E4E0EF;
  --text:#2A2740;
  --muted:#6B6785;
  --ok:#2E9E76;
  --warn:#D6464B;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --sh-sm:0 1px 2px rgba(20,17,43,.06);
  --sh-md:0 6px 18px -6px rgba(20,17,43,.12);
  --sh-lg:0 18px 40px -18px rgba(20,17,43,.22);
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}
::selection{background:rgba(33,199,168,.24)}

/* ============ 容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--ink);color:#B9B3D6;font-size:13px;line-height:1.6}
.topbar-in{display:flex;align-items:center;justify-content:space-between;min-height:40px;gap:16px}
.topbar-site{color:#B9B3D6;letter-spacing:.02em}
.topbar-links{display:flex;align-items:center;gap:22px}
.topbar-links a{color:#B9B3D6;transition:color .18s}
.topbar-links a:hover{color:#fff}

/* ============ 主导航 ============ */
.site-nav{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-nav.is-compact{box-shadow:var(--sh-md)}
.nav-in{display:flex;align-items:center;gap:28px;height:72px;transition:height .22s ease}
.site-nav.is-compact .nav-in{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{width:34px;height:34px;flex:none}
.logo-text{font-size:18px;font-weight:700;color:var(--brand);letter-spacing:-.01em}
.nav-menu{display:flex;align-items:center;gap:26px;margin:0 auto}
.nav-menu > li > a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:16px;font-weight:600;color:var(--text);
  transition:color .18s;
}
.nav-menu > li > a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--cyan);border-radius:2px;transition:width .2s ease;
}
.nav-menu > li > a:hover{color:var(--brand)}
.nav-menu > li > a:hover::after{width:24px}
.nav-menu > li > a.is-active{color:var(--brand)}
.nav-menu > li > a.is-active::after{width:24px}
.drawer-cta{display:none}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--brand);transition:transform .2s,opacity .2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
body.no-scroll{overflow:hidden}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .18s,color .18s,box-shadow .18s,transform .18s,border-color .18s;
}
.btn:active{transform:scale(.98)}
.btn--primary{background:var(--amber);color:var(--ink);box-shadow:var(--sh-sm)}
.btn--primary:hover{background:#F7B555;transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn--solid{background:var(--brand);color:#fff}
.btn--solid:hover{background:var(--brand-light);transform:translateY(-1px)}
.btn--ghost{border:1px solid var(--brand);color:var(--brand)}
.btn--ghost:hover{background:rgba(43,35,80,.06)}
.btn--light{border:1px solid rgba(244,242,255,.5);color:#F4F2FF}
.btn--light:hover{background:rgba(244,242,255,.12)}
.btn--lg{height:48px;padding:0 26px;font-size:16px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand)}
.link-arrow span{transition:transform .2s ease}
.link-arrow:hover{color:var(--cyan)}
.link-arrow:hover span{transform:translateX(4px)}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;font-size:13px;line-height:1;font-weight:600;
  border:1px solid rgba(43,35,80,.35);background:rgba(43,35,80,.06);color:var(--brand);
}
.badge--cyan{border-color:rgba(33,199,168,.45);background:rgba(33,199,168,.1);color:#12836C}
.badge--light{border-color:rgba(244,242,255,.35);background:rgba(244,242,255,.08);color:#D9D5F0}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumb a{color:var(--brand)}
.crumb a:hover{color:var(--cyan)}
.crumb .sep{color:#C3BEDB}
.crumb .cur{color:var(--muted)}

/* ============ 页头区 ============ */
.page-head{
  position:relative;overflow:hidden;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
}
.page-head::before{
  content:"";position:absolute;right:-80px;top:-120px;width:560px;height:560px;
  border-radius:50%;
  border:1px solid rgba(43,35,80,.1);
  box-shadow:0 0 0 60px rgba(43,35,80,.03),0 0 0 140px rgba(33,199,168,.05);
  pointer-events:none;
}
.page-head-in{position:relative;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,3fr);gap:48px;align-items:center}
.page-head-text .badge{margin:18px 0 14px}
.page-head h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:800;
  letter-spacing:-.01em;color:var(--ink);
}
.page-head .lead{
  margin-top:18px;max-width:640px;
  font-size:17px;line-height:1.9;color:var(--muted);
}
.page-head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.page-head-media{position:relative}
.page-head-media img{
  width:100%;aspect-ratio:1/1.2;object-fit:cover;
  border-radius:var(--r-lg);
  border:1px solid rgba(20,17,43,.06);
  box-shadow:var(--sh-lg);
}
.page-head-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(20,17,43,0) 45%,rgba(20,17,43,.42) 100%);
  pointer-events:none;
}

/* ============ 快览条 ============ */
.quickbar{padding:56px 0 8px}
.quickbar-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.quick-item{padding:0 28px;border-left:1px solid var(--line)}
.quick-item:first-child{padding-left:0;border-left:0}
.quick-num{
  font-size:34px;font-weight:800;color:var(--amber);line-height:1.1;
  letter-spacing:-.02em;
}
.quick-item h3{font-size:18px;font-weight:700;margin-top:12px;color:var(--ink)}
.quick-item p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--muted)}

/* ============ 主体：目录 + 步骤 ============ */
.guide{padding:72px 0}
.guide-grid{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,9fr);gap:48px;align-items:start}
.toc{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 20px;box-shadow:var(--sh-sm);
}
.toc h2{font-size:14px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin-bottom:14px}
.toc ol{display:flex;flex-direction:column;gap:4px}
.toc a{
  display:flex;align-items:center;gap:10px;
  padding:10px 10px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;color:var(--text);
  border-left:3px solid transparent;
  transition:background .18s,color .18s,border-color .18s;
}
.toc a .idx{font-size:13px;color:var(--muted);font-weight:700}
.toc a:hover{background:var(--bg);color:var(--brand)}
.toc a.is-current{color:var(--brand);border-left-color:var(--cyan);background:rgba(33,199,168,.08)}
.toc-note{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;line-height:1.7;color:var(--muted)}

.steps-head{margin-bottom:32px}
.steps-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.32;font-weight:700;color:var(--ink)}
.steps-head p{margin-top:12px;font-size:16px;line-height:1.9;color:var(--muted);max-width:620px}

.step{
  display:grid;grid-template-columns:88px minmax(0,1fr);gap:24px;
  padding:32px 0;border-top:1px solid var(--line);
}
.step:last-child{border-bottom:1px solid var(--line)}
.step-num{
  font-size:40px;font-weight:800;line-height:1;color:rgba(43,35,80,.18);
  letter-spacing:-.03em;
}
.step-body h3{font-size:18px;font-weight:700;color:var(--ink)}
.step-body p{margin-top:12px;font-size:16px;line-height:1.9;color:var(--text)}
.step-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.step-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.8;color:var(--muted)}
.step-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:6px;height:6px;border-radius:2px;background:var(--cyan);
}
.step-shot{
  margin-top:20px;border-radius:var(--r-card);overflow:hidden;
  border:1px solid rgba(20,17,43,.06);box-shadow:var(--sh-sm);
}
.step-shot img{width:100%;aspect-ratio:16/9;object-fit:cover}
.step-shot figcaption{margin-top:10px;font-size:13px;line-height:1.65;color:var(--muted)}

/* ============ 阻碍对照 ============ */
.blocks{padding:8px 0 72px}
.blocks-head{max-width:720px;margin-bottom:28px}
.blocks-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.32;font-weight:700;color:var(--ink)}
.blocks-head p{margin-top:12px;font-size:16px;line-height:1.9;color:var(--muted)}
.block-list{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm)}
.block-row{
  display:grid;grid-template-columns:220px minmax(0,1fr);gap:24px;
  padding:22px 26px;border-top:1px solid var(--line);
  transition:background .18s;
}
.block-row:first-child{border-top:0}
.block-row:hover{background:var(--bg)}
.block-row h3{font-size:17px;font-weight:700;color:var(--brand)}
.block-row p{font-size:15px;line-height:1.85;color:var(--muted)}
.block-row strong{color:var(--text);font-weight:600}

/* ============ FAQ ============ */
.faq{padding:0 0 72px}
.faq-head{max-width:720px;margin-bottom:28px}
.faq-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.32;font-weight:700;color:var(--ink)}
.faq-head p{margin-top:12px;font-size:16px;line-height:1.9;color:var(--muted)}
.faq-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.faq-item{border-top:1px solid var(--line)}
.faq-item:first-child{border-top:0}
.faq-q{
  display:flex;align-items:center;gap:14px;width:100%;
  min-height:56px;padding:14px 24px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:background .18s;
}
.faq-q:hover{background:var(--bg)}
.faq-q .qi{font-size:13px;font-weight:700;color:var(--muted);flex:none}
.faq-q .qtext{flex:1}
.faq-q .qicon{
  flex:none;width:20px;height:20px;position:relative;
}
.faq-q .qicon::before,.faq-q .qicon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);
  border-radius:2px;transform:translate(-50%,-50%);transition:transform .2s,opacity .2s;
}
.faq-q .qicon::before{width:14px;height:2px}
.faq-q .qicon::after{width:2px;height:14px}
.faq-item.is-open .faq-q .qicon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-in{padding:0 24px 22px 62px;font-size:15.5px;line-height:1.85;color:var(--muted)}

/* ============ 相关链接条 ============ */
.related{padding:0 0 72px}
.related-in{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 26px;box-shadow:var(--sh-sm);
}
.related-title{font-size:15px;font-weight:700;color:var(--ink);margin-right:8px}
.rel-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);background:var(--bg);
  font-size:14px;font-weight:600;color:var(--brand);
  transition:border-color .18s,background .18s,transform .18s;
}
.rel-link:hover{border-color:var(--brand);background:#fff;transform:translateY(-1px)}

/* ============ CTA ============ */
.cta{
  position:relative;overflow:hidden;
  background:var(--ink);
  padding:64px 0;
}
.cta::before{
  content:"";position:absolute;left:-120px;top:-140px;width:460px;height:460px;border-radius:50%;
  border:1px solid rgba(33,199,168,.18);
  box-shadow:0 0 0 50px rgba(33,199,168,.05),0 0 0 120px rgba(244,242,255,.04);
  pointer-events:none;
}
.cta-in{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700;color:#F4F2FF}
.cta p{margin-top:12px;font-size:16px;line-height:1.8;color:#B9B3D6;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#B9B3D6;padding:72px 0 0}
.footer-in{display:grid;grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));gap:40px;padding-bottom:48px}
.footer-brand .logo-text{color:#F4F2FF}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:#B9B3D6;max-width:320px}
.footer-brand .badge{margin-top:18px}
.footer-col h4{font-size:15px;font-weight:700;color:#F4F2FF;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:#B9B3D6;transition:color .18s}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;line-height:1.85;color:#B9B3D6}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid #2A2450;padding:20px 24px 26px;
  font-size:13px;color:#8E88B0;
}
.site-footer .footer-bottom{max-width:1200px;margin:0 auto}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:80;
  width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-md);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s,transform .22s,visibility .22s,background .18s;
}
.to-top.is-show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--brand-light)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:96%}
  .guide-grid{gap:36px}
  .quick-item{padding:0 22px}
}
@media (max-width:1023px){
  .page-head{padding:44px 0 52px}
  .page-head-in{grid-template-columns:1fr;gap:32px}
  .page-head-media{display:none}
  .quickbar-grid{grid-template-columns:1fr;gap:0}
  .quick-item{padding:20px 0;border-left:0;border-top:1px solid var(--line)}
  .quick-item:first-child{border-top:0;padding-top:0}
  .guide{padding:56px 0}
  .guide-grid{grid-template-columns:1fr;gap:28px}
  .toc{position:static}
  .toc ol{flex-direction:row;flex-wrap:wrap;gap:8px}
  .toc a{border-left:0;border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:14px}
  .toc a.is-current{border-color:var(--cyan);background:rgba(33,199,168,.1)}
  .toc-note{display:none}
  .block-row{grid-template-columns:1fr;gap:8px}
  .footer-in{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .container{padding:0 18px}
  .topbar-in{min-height:40px}
  .topbar-links a:not(:first-child){display:none}
  .nav-in{gap:12px;height:64px}
  .site-nav.is-compact .nav-in{height:58px}
  .nav-menu{
    position:fixed;left:0;right:0;top:0;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:88px 24px 96px;margin:0;
    transform:translateX(100%);transition:transform .26s ease;
    overflow-y:auto;z-index:55;
  }
  .nav-menu.is-open{transform:none}
  .nav-menu > li > a{
    display:flex;align-items:center;justify-content:space-between;
    height:56px;font-size:17px;border-bottom:1px solid var(--line);padding:0;
  }
  .nav-menu > li > a::after{display:none}
  .nav-menu > li > a.is-active{color:var(--brand)}
  .nav-actions{display:none}
  .nav-toggle{display:flex;margin-left:auto;position:relative;z-index:70}
  .drawer-cta{display:block;margin-top:24px}
  .drawer-cta .btn{width:100%;height:48px}
  .logo-text{font-size:16px}
  .page-head{padding:32px 0 40px}
  .page-head h1{font-size:30px}
  .page-head .lead{font-size:16px}
  .quickbar{padding:40px 0 0}
  .guide{padding:48px 0}
  .step{grid-template-columns:1fr;gap:12px;padding:26px 0}
  .step-num{font-size:30px}
  .blocks{padding-bottom:56px}
  .block-row{padding:20px}
  .faq{padding-bottom:56px}
  .faq-q{padding:14px 18px;font-size:15.5px}
  .faq-a-in{padding:0 18px 20px 18px}
  .related{padding-bottom:56px}
  .related-in{padding:20px}
  .cta{padding:48px 0}
  .cta-in{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .site-footer{padding-top:56px}
  .footer-in{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .page-head-actions .btn{width:100%}
  .toc ol{gap:6px}
  .toc a{font-size:13px;padding:7px 12px}
  .related-in{flex-direction:column;align-items:stretch}
  .rel-link{justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --brand:#2B2350;
  --brand-2:#3C3270;
  --ink:#14112B;
  --deep:#1D1840;
  --cyan:#21C7A8;
  --amber:#F2A63B;
  --bg:#F6F4FA;
  --card:#FFFFFF;
  --line:#E4E0EF;
  --text:#2A2740;
  --muted:#6B6785;
  --ok:#2E9E76;
  --warn:#D6464B;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --sh-sm:0 1px 2px rgba(20,17,43,.06);
  --sh-md:0 6px 18px -6px rgba(20,17,43,.12);
  --sh-lg:0 18px 40px -18px rgba(20,17,43,.22);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-2)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--brand)}
p{margin:0}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:#B9B3D6}
.topbar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;height:40px;font-size:13px}
.topbar-site{color:#B9B3D6;letter-spacing:.02em}
.topbar-links{display:flex;align-items:center;gap:20px}
.topbar-links a{color:#B9B3D6;font-size:13px;transition:color .2s var(--ease)}
.topbar-links a:hover{color:#FFFFFF}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-compact{box-shadow:var(--sh-md)}
.nav-in{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s var(--ease)}
.site-header.is-compact .nav-in{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:34px;height:34px;flex:none}
.logo-text{font-size:18px;font-weight:700;color:var(--brand);letter-spacing:.005em}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{
  position:relative;padding:10px 12px;font-size:16px;font-weight:600;color:var(--text);
  border-radius:8px;transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.main-nav a:hover{color:var(--brand);background:rgba(43,35,80,.04)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--brand)}
.main-nav a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;
  cursor:pointer;align-items:center;justify-content:center;padding:0;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--brand);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--brand);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),transform .16s var(--ease),border-color .2s var(--ease);
}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--amber);color:var(--ink);box-shadow:var(--sh-sm)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);color:var(--ink)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-2);color:#fff;transform:translateY(-1px)}
.btn-ghost{border-color:rgba(43,35,80,.35);color:var(--brand);background:#fff}
.btn-ghost:hover{background:rgba(43,35,80,.06);color:var(--brand)}
.btn-light{border-color:rgba(244,242,255,.45);color:#F4F2FF;background:transparent}
.btn-light:hover{background:rgba(244,242,255,.12);color:#fff}
.btn:disabled,.btn[disabled]{opacity:.4;pointer-events:none}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand);
  padding:0;height:auto;background:none;border:0;
}
.btn-link::after{content:"→";font-size:14px;transition:transform .2s var(--ease)}
.btn-link:hover::after{transform:translateX(4px)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  border:1px solid rgba(43,35,80,.28);color:var(--brand);background:rgba(43,35,80,.06);
}
.badge--cyan{border-color:rgba(33,199,168,.5);color:#15866F;background:rgba(33,199,168,.12)}
.badge--light{border-color:rgba(244,242,255,.35);color:#D9D4F2;background:rgba(244,242,255,.08)}

/* ---------- 抽屉导航 ---------- */
.drawer{
  position:fixed;top:40px;left:0;right:0;bottom:0;z-index:60;background:#fff;
  padding:8px 24px 0;overflow-y:auto;
  transform:translateY(-10px);opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.drawer.is-open{transform:none;opacity:1;visibility:visible}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;min-height:56px;
  border-bottom:1px solid var(--line);color:var(--text);font-size:16px;font-weight:600;
}
.drawer a.drawer-link.is-active{color:var(--brand)}
.drawer a.drawer-link::after{content:"›";color:var(--muted);font-size:20px;font-weight:400}
.drawer-foot{position:sticky;bottom:0;background:#fff;padding:16px 0 20px;border-top:1px solid var(--line);margin-top:16px}
.drawer-foot .btn{width:100%}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:22px 0 0}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb li::after{content:"/";margin-left:8px;color:#A9A3C2}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb [aria-current]{color:var(--muted)}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#F0ECF9 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.page-head::before{
  content:"";position:absolute;right:-140px;top:-170px;width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(43,35,80,.10);pointer-events:none;
}
.page-head::after{
  content:"";position:absolute;right:60px;top:-40px;width:260px;height:260px;border-radius:50%;
  border:1px dashed rgba(33,199,168,.22);pointer-events:none;
}
.page-head-in{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:48px;align-items:center;
  padding:32px 0 64px;
}
.page-head-copy .badge{margin-bottom:16px}
.page-head h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:800;letter-spacing:-.01em;
  margin:0 0 16px;
}
.page-head .lead{font-size:17px;line-height:1.9;color:var(--muted);max-width:62ch;margin:0 0 24px}
.page-head-actions{display:flex;flex-wrap:wrap;gap:12px}
.page-head-media{
  margin:0;aspect-ratio:1/1.2;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-md);border:1px solid rgba(20,17,43,.06);
}
.page-head-media img{width:100%;height:100%;object-fit:cover}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--panel{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:740px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.32;margin:0 0 12px}
.section-head p{color:var(--muted);font-size:16px}
.section-head .badge{margin-bottom:14px}

/* ---------- 错位卡片（本页主版式） ---------- */
.stagger{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.stagger-col{display:grid;gap:24px}
.stagger-col--b{margin-top:36px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-sm);
  transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:rgba(43,35,80,.3)}
.card--lg{padding:28px}
.card-media{
  margin:-24px -24px 20px;border-radius:13px 13px 0 0;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.card--lg .card-media{margin:-28px -28px 22px}
.card-media img{width:100%;height:220px;object-fit:cover}
.card h3{font-size:20px;line-height:1.45;margin:0 0 8px}
.card .card-sub{font-size:14px;color:var(--muted);margin:0 0 6px}
.card .card-foot{margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}

/* ---------- 对勾清单 ---------- */
.check-list{list-style:none;display:grid;gap:10px;margin:16px 0 0}
.check-list li{position:relative;padding-left:28px;font-size:15px;line-height:1.75;color:var(--text)}
.check-list li::before{
  content:"✓";position:absolute;left:0;top:1px;width:18px;height:18px;border-radius:50%;
  background:rgba(33,199,168,.14);color:#15866F;font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 40px;margin-top:8px}
.detail-grid .check-list{margin:0}

/* ---------- 场景交替图文 ---------- */
.scene{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;margin-bottom:64px}
.scene:last-child{margin-bottom:0}
.scene.is-reverse .scene-media{order:-1}
.scene-copy .badge{margin-bottom:14px}
.scene-copy h3{font-size:20px;line-height:1.45;margin:0 0 12px}
.scene-copy p{color:var(--text);margin:0 0 14px}
.scene-media{margin:0}
.scene-media .frame{
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);
  border:1px solid rgba(20,17,43,.06);
}
.scene-media img{width:100%;height:300px;object-fit:cover}
.scene-media figcaption{font-size:13px;color:var(--muted);padding-top:10px}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--sh-sm);transition:box-shadow .2s var(--ease),transform .2s var(--ease)
}
.step:hover{box-shadow:var(--sh-md);transform:translateY(-2px)}
.step .step-icon{
  width:38px;height:38px;border-radius:50%;background:rgba(43,35,80,.08);
  display:flex;align-items:center;justify-content:center;color:var(--brand);margin-bottom:14px;
}
.step .step-icon svg{width:20px;height:20px}
.step h3{font-size:17px;line-height:1.5;margin:0 0 8px}
.step p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* ---------- 更新记录（行式列表） ---------- */
.row-list{border-top:1px solid var(--line)}
.row-item{
  display:flex;align-items:flex-start;gap:20px;min-height:56px;padding:16px;
  border-bottom:1px solid var(--line);border-radius:10px;
  transition:background .18s var(--ease);
}
.row-item:hover{background:var(--bg)}
.row-date{flex:none;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;padding-top:3px;width:92px}
.row-text{font-size:15px;line-height:1.8}

/* ---------- FAQ ---------- */
.faq{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;min-height:56px;padding:16px 20px;background:none;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--brand);text-align:left;line-height:1.6;
}
.faq-q:hover{background:var(--bg)}
.faq-q .idx{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;margin-right:10px;font-weight:500}
.faq-sign{position:relative;flex:none;width:16px;height:16px}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.faq-sign::before{left:0;top:7px;width:16px;height:2px}
.faq-sign::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-sign::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a-in{padding:0 20px 20px;font-size:15.5px;line-height:1.85;color:var(--text);max-width:80ch}

/* ---------- CTA ---------- */
.cta-wrap{padding:0 0 96px}
.cta{
  position:relative;overflow:hidden;border-radius:var(--r-lg);background:var(--ink);color:#F4F2FF;
  padding:56px;display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;opacity:.14;
}
.cta::after{
  content:"";position:absolute;left:-80px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(33,199,168,.28);pointer-events:none;
}
.cta-copy{position:relative;z-index:1;max-width:640px}
.cta h2{color:#F4F2FF;font-size:clamp(22px,2.4vw,30px);line-height:1.35;margin:0 0 12px}
.cta p{color:#B9B3D6;font-size:16px;margin:0}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px;flex:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#B9B3D6;padding-top:72px}
.footer-in{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{display:flex;align-items:center;gap:10px}
.footer-brand .logo-mark{width:34px;height:34px}
.footer-brand .logo-text{font-size:18px;font-weight:700;color:#F4F2FF}
.footer-brand p{font-size:14px;line-height:1.8;margin:16px 0;max-width:38ch}
.footer-col h4{color:#F4F2FF;font-size:15px;font-weight:700;margin:0 0 16px}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a{color:#B9B3D6;font-size:14px;transition:color .2s var(--ease)}
.footer-col a:hover{color:#FFFFFF}
.footer-col p{font-size:14px;line-height:1.8;margin:0}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid #2A2450;padding-top:20px;padding-bottom:20px;font-size:13px;color:#8E88B0;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:40;width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-md);opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s,background .2s var(--ease),transform .16s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible}
.to-top:hover{background:var(--brand-2)}
.to-top:active{transform:scale(.96)}
.to-top svg{width:18px;height:18px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .section{padding:80px 0}
  .section--tight{padding:64px 0}
  .cta-wrap{padding-bottom:80px}
}
@media (max-width:1024px){
  .container{padding:0 20px}
  .main-nav a{padding:9px 8px;font-size:14.5px;letter-spacing:0}
  .nav-actions .btn-ghost{display:none}
  .page-head-in{grid-template-columns:minmax(0,1fr) 220px;gap:32px}
  .footer-in{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:900px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .nav-in{height:64px}
  .site-header.is-compact .nav-in{height:64px}
}
@media (max-width:768px){
  body{font-size:16px;line-height:1.8}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .topbar-links a:not(:first-child){display:none}
  .page-head-in{grid-template-columns:1fr;padding:24px 0 48px}
  .page-head-media{display:none}
  .page-head h1{font-size:30px}
  .stagger{grid-template-columns:1fr}
  .stagger-col--b{margin-top:0}
  .detail-grid{grid-template-columns:1fr}
  .scene{grid-template-columns:1fr;gap:24px;margin-bottom:56px}
  .scene.is-reverse .scene-media{order:0}
  .scene-media img{height:230px}
  .steps{grid-template-columns:1fr}
  .cta{flex-direction:column;align-items:flex-start;padding:36px 24px;gap:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .cta-wrap{padding-bottom:64px}
  .row-item{flex-direction:column;gap:6px}
  .row-date{width:auto}
  .footer-in{grid-template-columns:1fr 1fr;gap:32px;padding-bottom:36px}
  .footer-brand{grid-column:1 / -1}
  .site-footer{padding-top:56px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .footer-in{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .page-head-actions .btn{width:100%}
  .badge{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --primary:#2B2350;
  --primary-soft:#3C3270;
  --ink:#14112B;
  --ink-2:#1D1840;
  --teal:#21C7A8;
  --amber:#F2A63B;
  --bg:#F6F4FA;
  --surface:#FFFFFF;
  --surface-alt:#F0EDF7;
  --line:#E4E0EF;
  --text:#2A2740;
  --muted:#6B6785;
  --success:#2E9E76;
  --danger:#D6464B;
  --dark-text:#F4F2FF;
  --dark-muted:#B9B3D6;
  --dark-line:#2A2450;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(20,17,43,.06);
  --sh-md:0 6px 18px -6px rgba(20,17,43,.12);
  --sh-lg:0 18px 40px -18px rgba(20,17,43,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;border-bottom:1px solid rgba(43,35,80,.28);transition:color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--teal);border-color:var(--teal);}
h1,h2,h3,h4{margin:0;color:var(--primary);font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--text);}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.32;}
.section-head p{margin-top:16px;font-size:17px;line-height:1.9;color:var(--muted);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--primary-soft);text-transform:uppercase;}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--amber);}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:var(--dark-muted);font-size:13px;}
.topbar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;height:40px;}
.topbar-site{color:var(--dark-muted);white-space:nowrap;}
.topbar-links{display:flex;align-items:center;gap:24px;}
.topbar-links a{color:var(--dark-muted);border-bottom:0;}
.topbar-links a:hover{color:#fff;}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;}
.mainnav{background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .25s var(--ease);}
.mainnav-in{display:flex;align-items:center;gap:32px;height:72px;transition:height .25s var(--ease);}
.site-header.is-condensed .mainnav{box-shadow:var(--sh-md);}
.site-header.is-condensed .mainnav-in{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;border-bottom:0;flex:0 0 auto;}
.logo-mark{width:34px;height:34px;flex:0 0 auto;}
.logo-text{font-size:18px;font-weight:700;color:var(--primary);letter-spacing:.01em;white-space:nowrap;}
.nav-list{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-list a{
  position:relative;display:inline-block;padding:8px 12px;font-size:16px;font-weight:600;
  color:var(--text);border-bottom:0;border-radius:8px;
}
.nav-list a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--teal);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-list a:hover{color:var(--primary);}
.nav-list a:hover::after{transform:scaleX(1);}
.nav-list a.is-active{color:var(--primary);}
.nav-list a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px;}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--primary);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;border-bottom-width:1px;
  transition:transform .18s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:active{transform:scale(.98);}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px;}
.btn-lg{height:50px;padding:0 28px;font-size:16px;}
.btn-primary{background:var(--amber);color:var(--ink);border-color:var(--amber);}
.btn-primary:hover{background:#F7B957;color:var(--ink);transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-solid{background:var(--primary);color:#fff;border-color:var(--primary);}
.btn-solid:hover{background:var(--primary-soft);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-outline{background:transparent;color:var(--primary);border-color:rgba(43,35,80,.35);}
.btn-outline:hover{background:rgba(43,35,80,.06);color:var(--primary);}
.btn-ghost{background:transparent;color:var(--primary);border-color:transparent;padding:0 6px;}
.btn-ghost:hover{color:var(--teal);}
.btn-on-dark{background:transparent;color:var(--dark-text);border-color:rgba(244,242,255,.4);}
.btn-on-dark:hover{background:rgba(244,242,255,.1);color:#fff;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;border-bottom:0;}
.link-arrow::after{content:"→";transition:transform .2s var(--ease);}
.link-arrow:hover::after{transform:translateX(4px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;
  color:var(--primary);background:rgba(43,35,80,.06);border:1px solid rgba(43,35,80,.22);
}
.badge--teal{color:#127D69;background:rgba(33,199,168,.1);border-color:rgba(33,199,168,.4);}
.badge--light{color:var(--dark-text);background:rgba(244,242,255,.06);border-color:rgba(244,242,255,.34);}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:20px 0 0;font-size:13px;color:var(--muted);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#C3BDD8;}
.breadcrumb a{color:var(--muted);border-bottom:0;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:#8E88B0;}

/* ---------- 页头 ---------- */
.pagehead{position:relative;overflow:hidden;background:var(--bg);}
.pagehead::before{
  content:"";position:absolute;right:-140px;top:-80px;width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(43,35,80,.10);box-shadow:0 0 0 60px rgba(43,35,80,.04);
  pointer-events:none;
}
.pagehead-in{position:relative;display:grid;grid-template-columns:1fr 260px;gap:64px;align-items:center;padding:40px 0 72px;}
.pagehead-text .badge{margin-bottom:20px;}
.pagehead h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;letter-spacing:-.01em;font-weight:800;max-width:16em;}
.pagehead .lead{margin-top:20px;font-size:17.5px;line-height:1.9;color:var(--muted);max-width:44em;}
.pagehead-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.pagehead-art img{width:100%;aspect-ratio:1/1.2;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-md);border:1px solid rgba(20,17,43,.06);}

/* ---------- 对照版式 ---------- */
.compare{display:grid;grid-template-columns:1fr 72px 1fr;align-items:stretch;gap:0;}
.compare-divider{position:relative;display:flex;align-items:center;justify-content:center;}
.compare-divider::before{content:"";position:absolute;top:12px;bottom:12px;left:50%;width:1px;background:var(--line);transform:translateX(-50%);}
.vs-dot{
  position:relative;z-index:1;width:46px;height:46px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;background:var(--ink);color:var(--dark-text);
  font-size:14px;font-weight:700;letter-spacing:.04em;box-shadow:var(--sh-md);
}
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-sm);transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.case-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:rgba(43,35,80,.3);}
.case-card--alt{background:var(--surface-alt);}
.case-card h3{margin-top:16px;font-size:20px;line-height:1.45;}
.case-card > p{margin-top:12px;font-size:15.5px;color:var(--muted);}
.check-list{margin-top:20px;padding-top:20px;border-top:1px solid var(--line);display:grid;gap:12px;}
.check-list li{position:relative;padding-left:26px;font-size:15.5px;line-height:1.8;}
.check-list li::before{
  content:"✓";position:absolute;left:0;top:0;width:18px;height:18px;margin-top:6px;
  display:flex;align-items:center;justify-content:center;border-radius:50%;
  background:rgba(33,199,168,.14);color:#127D69;font-size:11px;font-weight:700;
}
.case-card .link-arrow{margin-top:24px;}
.compare-note{
  margin-top:40px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--primary);
  border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-sm);
}
.compare-note h3{font-size:18px;}
.compare-note p{margin-top:14px;font-size:16px;color:var(--text);}
.compare-note p + p{margin-top:12px;}
.compare-note .btn{margin-top:24px;}

/* ---------- 维度行式列表 ---------- */
.dim-block{border-top:1px solid var(--line);}
.dim-row{
  display:grid;grid-template-columns:200px 1fr 1fr;gap:32px;align-items:start;
  padding:24px 20px;border-bottom:1px solid var(--line);border-radius:var(--r-btn);
  transition:background-color .2s var(--ease);
}
.dim-row:first-child{border-top:0;}
.dim-row:hover{background:var(--surface);}
.dim-head{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.06em;}
.dim-name{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--primary);}
.dim-name span{
  display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;flex:0 0 auto;
  border-radius:50%;background:rgba(43,35,80,.08);color:var(--primary);font-size:13px;font-weight:700;
}
.dim-val{font-size:15.5px;color:var(--text);}
.dim-val small{display:block;margin-top:4px;font-size:13px;color:var(--muted);}

/* ---------- 场景图文 ---------- */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-top:64px;}
.scene-row:first-of-type{margin-top:0;}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);border:1px solid rgba(20,17,43,.06);box-shadow:var(--sh-md);}
.scene-media figcaption{margin-top:12px;font-size:13px;color:var(--muted);}
.scene-body h3{margin-top:16px;font-size:22px;line-height:1.4;}
.scene-body > p{margin-top:14px;font-size:16.5px;color:var(--muted);}
.scene-points{margin-top:20px;display:grid;gap:10px;}
.scene-points li{position:relative;padding-left:18px;font-size:15.5px;}
.scene-points li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:2px;border-radius:2px;background:var(--teal);}
.scene-row--flip .scene-media{order:2;}

/* ---------- FAQ ---------- */
.faq{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;min-height:56px;padding:14px 24px;
  text-align:left;font-size:16.5px;font-weight:600;color:var(--primary);transition:background-color .2s var(--ease);
}
.faq-q:hover{background:var(--bg);}
.faq-index{font-size:13px;font-weight:700;color:var(--muted);flex:0 0 auto;}
.faq-icon{margin-left:auto;position:relative;width:16px;height:16px;flex:0 0 auto;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%);transition:transform .22s var(--ease),opacity .22s var(--ease);}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a-in{padding:0 24px 24px 56px;font-size:15.5px;line-height:1.85;color:var(--muted);}

/* ---------- CTA 横幅 ---------- */
.cta-band{background:var(--ink);color:var(--dark-text);position:relative;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;left:-120px;bottom:-180px;width:460px;height:460px;border-radius:50%;
  border:1px solid rgba(33,199,168,.28);box-shadow:0 0 0 50px rgba(33,199,168,.06);
}
.cta-in{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;padding:72px 0;}
.cta-in h2{color:var(--dark-text);font-size:clamp(22px,2.4vw,30px);line-height:1.4;max-width:18em;}
.cta-in p{margin-top:14px;color:var(--dark-muted);font-size:16px;max-width:36em;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--dark-muted);}
.footer-in{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:72px 0 40px;}
.footer-brand .logo-text{color:var(--dark-text);}
.footer-brand p{margin-top:16px;font-size:14.5px;line-height:1.8;max-width:26em;}
.footer-brand .badge{margin-top:20px;}
.footer-col h4{color:var(--dark-text);font-size:15px;margin-bottom:18px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:var(--dark-muted);font-size:14.5px;border-bottom:0;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14.5px;line-height:1.8;}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px 28px;border-top:1px solid var(--dark-line);font-size:13px;color:#8E88B0;}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-lg);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease);z-index:70;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--primary-soft);}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--surface);
  transform:translateX(100%);transition:transform .28s var(--ease);display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:72px;padding:0 20px;border-bottom:1px solid var(--line);background:var(--ink);color:var(--dark-text);}
.drawer-head .logo-text{color:var(--dark-text);}
.drawer-close{width:40px;height:40px;font-size:24px;line-height:1;color:var(--dark-text);}
.drawer-nav{flex:1;overflow-y:auto;padding:12px 20px;}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;min-height:56px;font-size:16.5px;font-weight:600;color:var(--text);border-bottom:1px solid var(--line);border-radius:0;}
.drawer-nav a::after{content:"›";color:var(--muted);font-size:20px;}
.drawer-nav a.is-active{color:var(--primary);}
.drawer-foot{padding:16px 20px 28px;border-top:1px solid var(--line);}
body.no-scroll{overflow:hidden;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{width:96%;}
  .section{padding:80px 0;}
}
@media (max-width:1023px){
  .pagehead-in{grid-template-columns:1fr;gap:36px;padding:32px 0 56px;}
  .pagehead-art{max-width:220px;}
  .dim-row{grid-template-columns:160px 1fr;gap:16px 24px;}
  .dim-row .dim-val:last-child{grid-column:2;}
  .scene-row{gap:32px;}
  .footer-in{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:860px){
  .nav-list,.nav-actions .btn-outline{display:none;}
  .nav-toggle{display:flex;}
  .nav-list{gap:0;}
  .mainnav-in{gap:16px;}
}
@media (max-width:768px){
  body{font-size:16px;line-height:1.8;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .topbar-links a:not(:first-child){display:none;}
  .compare{grid-template-columns:1fr;gap:0;}
  .compare-divider{padding:22px 0;}
  .compare-divider::before{top:50%;bottom:auto;left:12%;right:12%;width:auto;height:1px;transform:none;}
  .scene-row{grid-template-columns:1fr;gap:24px;margin-top:48px;}
  .scene-row--flip .scene-media{order:0;}
  .dim-row{grid-template-columns:1fr;gap:8px;padding:20px 0;}
  .dim-row .dim-val:last-child{grid-column:auto;}
  .cta-in{flex-direction:column;align-items:flex-start;padding:56px 0;gap:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;min-width:160px;}
  .footer-in{grid-template-columns:1fr;gap:32px;padding:56px 0 32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .faq-a-in{padding:0 20px 20px 20px;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:520px){
  .container{width:100%;padding:0 16px;}
  .pagehead h1{font-size:30px;}
  .pagehead .lead{font-size:16px;}
  .case-card,.compare-note{padding:20px;}
  .pagehead::before{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
  --brand:#2B2350;
  --brand-lite:#3C3270;
  --deep:#14112B;
  --deep-2:#1D1840;
  --cyan:#21C7A8;
  --amber:#F2A63B;
  --amber-hover:#F6B457;
  --bg:#F6F4FA;
  --card:#FFFFFF;
  --line:#E4E0EF;
  --ink:#2A2740;
  --ink-2:#6B6785;
  --ink-3:#8E88B0;
  --light-text:#F4F2FF;
  --light-text-2:#B9B3D6;
  --ok:#2E9E76;
  --warn:#D6464B;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(20,17,43,.06);
  --sh-md:0 6px 18px -6px rgba(20,17,43,.12);
  --sh-lg:0 18px 40px -18px rgba(20,17,43,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* 顶部信息条 */
.infobar{background:var(--deep);color:var(--light-text-2);font-size:13px;}
.infobar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;height:40px;}
.infobar-site{letter-spacing:.02em;}
.topbar-links{display:flex;gap:22px;}
.topbar-links a{transition:color .2s var(--ease);}
.topbar-links a:hover{color:#fff;}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-compact{box-shadow:var(--sh-md);}
.header-in{display:flex;align-items:center;gap:28px;height:72px;transition:height .25s var(--ease);}
.site-header.is-compact .header-in{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{width:34px;height:34px;flex-shrink:0;}
.logo-text{font-size:18px;font-weight:700;color:var(--brand);letter-spacing:-.01em;}
.main-nav{display:flex;align-items:center;gap:26px;margin:0 auto;}
.main-nav a{
  position:relative;display:inline-block;padding:8px 0;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:2px;width:0;height:2px;
  background:var(--cyan);border-radius:2px;transition:width .25s var(--ease);
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after{width:24px;}
.main-nav a.active{color:var(--brand);}
.main-nav a.active::after{width:24px;}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 18px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  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:active{transform:scale(.98);}
.btn-primary{background:var(--amber);color:var(--deep);box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--amber-hover);transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-brand{background:var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-lite);transform:translateY(-1px);}
.btn-ghost{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-ghost:hover{background:rgba(43,35,80,.06);}
.btn-ghost-light{border-color:rgba(244,242,255,.55);color:var(--light-text);background:transparent;}
.btn-ghost-light:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08);}
.btn-lg{height:48px;padding:0 26px;font-size:16px;}
.btn .arrow{transition:transform .2s var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  background:#fff;border-radius:var(--r-btn);align-items:center;justify-content:center;
  cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;background:#fff;
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;visibility:hidden;
}
.drawer.is-open{transform:translateX(0);visibility:visible;}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 18px;border-bottom:1px solid var(--line);background:var(--deep);
}
.drawer-head .logo-text{color:var(--light-text);}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-btn);border:1px solid rgba(244,242,255,.35);
  background:transparent;color:var(--light-text);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-nav{padding:8px 18px;overflow-y:auto;flex:1;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;font-size:16px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand);}
.drawer-nav a span{color:var(--ink-3);font-size:18px;}
.drawer-foot{padding:16px 18px 24px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}
body.no-scroll{overflow:hidden;}

/* 面包屑 */
.crumb{padding:22px 0 0;font-size:13px;color:var(--ink-2);}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb li::after{content:"/";margin-left:8px;color:var(--ink-3);}
.crumb li:last-child::after{display:none;}
.crumb a{color:var(--brand);}
.crumb a:hover{text-decoration:underline;text-underline-offset:3px;}
.crumb .current{color:var(--ink-2);}

/* 页头 */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#F8F6FC 0%,#F1EEF9 100%);
  border-bottom:1px solid var(--line);
  padding:48px 0 64px;margin-top:16px;
}
.page-hero::before{
  content:"";position:absolute;top:-140px;right:-120px;width:520px;height:520px;
  border-radius:50%;border:1px solid rgba(43,35,80,.10);
  box-shadow:0 0 0 60px rgba(43,35,80,.035),0 0 0 130px rgba(33,199,168,.05);
  pointer-events:none;
}
.hero-in{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:48px;align-items:center;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;line-height:1;
}
.badge--brand{border:1px solid rgba(43,35,80,.35);background:rgba(43,35,80,.08);color:var(--brand);}
.badge--cyan{border:1px solid rgba(33,199,168,.5);background:rgba(33,199,168,.1);color:#158B76;}
.badge--light{border:1px solid rgba(244,242,255,.35);background:rgba(244,242,255,.06);color:var(--light-text-2);}
.badge--amber{border:1px solid rgba(242,166,59,.55);background:rgba(242,166,59,.12);color:#9A6410;}
.page-hero h1{
  margin:20px 0 18px;
  font-size:clamp(28px,3.6vw,42px);line-height:1.25;font-weight:800;letter-spacing:-.01em;color:var(--brand);
}
.hero-lead{max-width:62ch;font-size:17.5px;line-height:1.9;color:var(--ink-2);}
.hero-figure{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-md);
  border:1px solid rgba(20,17,43,.06);background:#F0EDF7;
}
.hero-figure img{width:100%;aspect-ratio:1/1.2;object-fit:cover;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:24px;font-size:14px;color:var(--ink-2);}
.hero-meta i{font-style:normal;color:var(--cyan);font-weight:700;margin-right:6px;}

/* 板块 */
.section{padding:96px 0;}
.section--tight{padding-top:64px;}
.section--white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  padding-bottom:24px;margin-bottom:40px;border-bottom:1px solid var(--line);
}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.32;font-weight:700;color:var(--brand);margin-top:12px;}
.section-head p{margin-top:10px;font-size:17px;line-height:1.9;color:var(--ink-2);max-width:60ch;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--brand);white-space:nowrap;
}
.text-link .arrow{transition:transform .2s var(--ease);}
.text-link:hover{color:#158B76;}
.text-link:hover .arrow{transform:translateX(4px);}

/* 时间线 */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.timeline::before{
  content:"";position:absolute;top:13px;left:6%;right:6%;height:2px;
  background:linear-gradient(90deg,rgba(33,199,168,.55),rgba(242,166,59,.55));
}
.tl-node{position:relative;padding-top:46px;}
.tl-dot{
  position:absolute;top:0;left:0;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;font-weight:700;
  background:#fff;border:2px solid var(--cyan);color:var(--brand);
  font-variant-numeric:tabular-nums;z-index:1;
}
.tl-node:nth-child(even) .tl-dot{border-color:var(--amber);}
.tl-node h3{font-size:18px;line-height:1.45;font-weight:700;color:var(--brand);margin-bottom:10px;}
.tl-node p{font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.tl-note{margin-top:10px;font-size:13px;color:var(--ink-3);}

/* 数字条 */
.stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;
}
.stat{padding:28px;border-left:1px solid var(--line);}
.stat:first-child{border-left:none;}
.stat .figure{font-size:34px;font-weight:800;line-height:1.1;color:var(--amber);font-variant-numeric:tabular-nums;}
.stat .figure em{font-style:normal;font-size:15px;font-weight:600;color:var(--ink-2);margin-left:6px;}
.stat h3{margin-top:12px;font-size:17px;font-weight:700;color:var(--brand);}
.stat p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--ink-2);}

/* 行式列表 */
.row-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm);}
.row-item{
  display:grid;grid-template-columns:56px minmax(0,1fr) auto;gap:20px;align-items:center;
  min-height:76px;padding:16px 24px;border-top:1px solid var(--line);
  transition:background-color .2s var(--ease);
}
.row-item:first-child{border-top:none;}
.row-item:hover{background:var(--bg);}
.row-index{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:rgba(43,35,80,.08);color:var(--brand);font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.row-item h3{font-size:17px;font-weight:700;color:var(--brand);}
.row-item p{font-size:14px;line-height:1.7;color:var(--ink-2);margin-top:2px;}

/* FAQ */
.faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;}
.faq-item{border-top:1px solid var(--line);}
.faq-item:first-child{border-top:none;}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  min-height:56px;padding:14px 24px;background:transparent;border:0;
  text-align:left;cursor:pointer;transition:background-color .2s var(--ease);
}
.faq-q:hover{background:var(--bg);}
.faq-q .q-num{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;flex-shrink:0;}
.faq-q .q-text{flex:1;font-size:16.5px;font-weight:600;color:var(--ink);}
.faq-q .q-icon{
  position:relative;width:18px;height:18px;flex-shrink:0;
}
.faq-q .q-icon::before,.faq-q .q-icon::after{
  content:"";position:absolute;top:8px;left:0;width:18px;height:2px;border-radius:2px;
  background:var(--brand);transition:transform .25s var(--ease),background-color .2s var(--ease);
}
.faq-q .q-icon::after{transform:rotate(90deg);}
.faq-item.is-open .q-icon::after{transform:rotate(0);}
.faq-item.is-open .q-icon::before{background:var(--cyan);}
.faq-item.is-open .q-icon::after{background:var(--cyan);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a-in{padding:0 24px 22px 56px;font-size:15.5px;line-height:1.85;color:var(--ink-2);}
.faq-a-in strong{color:var(--brand);font-weight:700;}

/* 相关链接条 */
.related{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;
}
.related-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-sm);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.related-card:hover{box-shadow:var(--sh-md);border-color:rgba(43,35,80,.3);transform:translateY(-2px);}
.related-card h3{font-size:17px;font-weight:700;color:var(--brand);}
.related-card p{margin-top:4px;font-size:13.5px;color:var(--ink-2);}
.related-card .arrow{color:var(--brand);font-size:18px;transition:transform .2s var(--ease);}
.related-card:hover .arrow{transform:translateX(4px);}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;background:var(--deep);color:var(--light-text);
  border-radius:var(--r-lg);padding:56px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.16;
}
.cta-band::after{
  content:"";position:absolute;top:-120px;right:-80px;width:380px;height:380px;border-radius:50%;
  border:1px solid rgba(33,199,168,.35);
  box-shadow:0 0 0 46px rgba(33,199,168,.06),0 0 0 96px rgba(242,166,59,.05);
}
.cta-in{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;z-index:1;}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700;}
.cta-band p{margin-top:12px;font-size:16px;line-height:1.8;color:var(--light-text-2);max-width:56ch;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}

/* 页脚 */
.site-footer{background:var(--deep);color:var(--light-text-2);margin-top:96px;padding:72px 0 0;}
.footer-in{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.8;max-width:34ch;}
.footer-brand .badge{margin-top:18px;}
.footer-col h4{font-size:15px;font-weight:700;color:var(--light-text);margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--light-text-2);transition:color .2s var(--ease);}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;line-height:1.8;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  border-top:1px solid #2A2450;padding-top:20px;padding-bottom:24px;
  font-size:13px;color:var(--ink-3);
}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:44px;height:44px;border-radius:50%;border:0;cursor:pointer;
  background:var(--brand);color:#fff;font-size:18px;line-height:1;
  display:grid;place-items:center;box-shadow:var(--sh-md);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease),background-color .2s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{background:var(--brand-lite);}

a:focus-visible,button:focus-visible,.faq-q:focus-visible{
  outline:2px solid var(--cyan);outline-offset:2px;border-radius:var(--r-btn);
}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;pointer-events:none;}

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

/* 断点 */
@media (max-width:1279px){
  .container{max-width:1120px;}
  .section{padding:80px 0;}
}
@media (max-width:1023px){
  .container{padding:0 22px;}
  .main-nav{gap:18px;}
  .main-nav a{font-size:15px;}
  .header-actions .btn-ghost{display:none;}
  .hero-in{grid-template-columns:minmax(0,1fr) 200px;gap:32px;}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px;}
  .timeline::before{display:none;}
  .stats{grid-template-columns:1fr;border-radius:var(--r-card);}
  .stat{border-left:none;border-top:1px solid var(--line);}
  .stat:first-child{border-top:none;}
  .related{grid-template-columns:1fr;}
  .footer-in{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-in{flex-direction:column;align-items:flex-start;gap:28px;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .infobar .topbar-links a:not(:first-child){display:none;}
  .main-nav{display:none;}
  .header-actions .btn-ghost{display:none;}
  .header-actions .btn-primary{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-in{grid-template-columns:1fr;gap:28px;}
  .hero-figure{display:none;}
  .page-hero{padding:36px 0 48px;}
  .timeline{grid-template-columns:1fr;gap:28px;}
  .row-item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:16px 18px;}
  .row-item .badge{grid-column:2;justify-self:start;}
  .faq-q{padding:14px 18px;}
  .faq-a-in{padding:0 18px 20px 46px;}
  .cta-band{padding:36px 24px;border-radius:var(--r-card);}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;min-width:160px;}
  .footer-in{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .site-footer{padding-top:56px;margin-top:56px;}
  .to-top{right:16px;bottom:16px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .page-hero::before{display:none;}
  .stat{padding:22px 18px;}
  .footer-brand p{max-width:none;}
}