/* roulang page: index */
:root{
  --primary:#6A3DE8;--primary-700:#5527D6;--primary-50:#F1ECFF;
  --accent:#C6F24E;--warm:#FF7A45;
  --bg:#F7F5FF;--surface:#FFFFFF;--surface-2:#EFEBFB;
  --dark:#150F2E;--dark-2:#B9B3D6;
  --ink:#14102B;--ink-2:#4A4560;--ink-3:#7A7396;
  --line:#E6E1F5;--line-strong:#CBBFF2;
  --ok:#17B26A;--warn:#F5A524;--err:#E5484D;
  --r-btn:10px;--r-card:14px;--r-lg:18px;--r-pill:999px;
  --sh-sm:0 1px 2px rgba(20,16,43,.06);
  --sh-md:0 8px 24px -10px rgba(20,16,43,.18);
  --sh-lg:0 20px 48px -18px rgba(20,16,43,.28);
  --header-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:130px}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
h1{line-height:1.2}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3}
h3{font-size:20px;line-height:1.45;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.container-wide{width:100%;max-width:1360px;margin:0 auto;padding:0 24px}
.img-fallback{background:linear-gradient(135deg,var(--primary-50),#E8F8C4)}
.num{font-variant-numeric:tabular-nums}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;height:var(--header-h);
  background:transparent;border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(247,245,255,.86);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom-color:var(--line);box-shadow:var(--sh-sm);
}
.header-inner{max-width:1360px;margin:0 auto;height:100%;padding:0 24px;display:flex;align-items:center;gap:26px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:28px;height:28px;border-radius:8px;background:var(--primary);color:#fff;font-size:12px;font-weight:700;display:grid;place-items:center;letter-spacing:.04em}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;font-size:14px;font-weight:500;color:var(--ink-2);padding:6px 0;transition:color .2s ease;white-space:nowrap}
.nav-link:hover{color:var(--primary)}
.nav-link.is-active{color:var(--ink)}
.nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;border-radius:2px;background:var(--primary)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;height:36px;width:230px;
  padding:0 10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-btn);
  transition:width .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.cmd-search:focus-within{width:320px;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-50)}
.cmd-search svg{flex:none;color:var(--ink-3)}
.cmd-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px}
.cmd-search input::placeholder{color:var(--ink-3)}
.kbd{font-size:11px;line-height:1.4;color:var(--ink-3);border:1px solid var(--line);border-radius:6px;padding:1px 5px;background:var(--surface-2);white-space:nowrap}
.suggest-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-lg);padding:14px;
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:.2s ease;z-index:30;
}
.cmd-search.is-open .suggest-panel{opacity:1;visibility:visible;transform:none}
.suggest-group + .suggest-group{margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}
.suggest-title{font-size:11px;color:var(--ink-3);letter-spacing:.06em;margin-bottom:6px}
.suggest-panel a{display:block;font-size:14px;color:var(--ink-2);padding:5px 0;transition:color .2s ease}
.suggest-panel a:hover{color:var(--primary)}
.quick-link{font-size:14px;font-weight:500;color:var(--ink-2);transition:color .2s ease;white-space:nowrap}
.quick-link:hover{color:var(--primary)}
.hamburger{display:none;width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer}
.hamburger span{display:block;width:16px;height:2px;border-radius:2px;background:var(--ink)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:38px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
}
.btn-lg{height:44px;padding:0 24px}
.btn-sm{height:32px;padding:0 14px;font-size:14px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-700);transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(1px)}
.btn-secondary{background:var(--surface);border-color:var(--line-strong);color:var(--primary)}
.btn-secondary:hover{background:var(--primary-50);border-color:var(--primary);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-ghost{background:transparent;color:var(--primary);height:auto;padding:0;border:0}
.btn-ghost:hover{text-decoration:underline;text-underline-offset:3px}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.32);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.6)}
.btn[disabled],.btn.is-disabled{background:var(--line);color:#A9A2C4;border-color:var(--line);cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:3px}
.link-arrow svg{transition:transform .2s ease}
.link-arrow:hover svg{transform:translateX(3px)}

/* ============ 徽章 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--r-pill);font-size:11px;font-weight:600;letter-spacing:.02em;line-height:1.6}
.badge-accent{background:var(--accent);color:var(--ink)}
.badge-soft{background:var(--primary-50);color:var(--primary)}
.badge-outline{border:1px solid var(--line-strong);color:var(--ink-2)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--primary);flex:none}
.badge-accent .dot{background:var(--ink)}

/* ============ 首屏 ============ */
.hero{position:relative;background:var(--dark);color:#fff;overflow:hidden;padding:84px 0 96px}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.7;
  background-image:radial-gradient(rgba(255,255,255,.075) 1px,transparent 1px);
  background-size:20px 20px;
}
.hero::after{
  content:"";position:absolute;top:-180px;right:-140px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,242,78,.16),transparent 66%);pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;max-width:1360px;margin:0 auto;padding:0 24px}
.hero h1{font-size:clamp(34px,5vw,56px);line-height:1.12;letter-spacing:-.02em;color:#fff;margin:20px 0 18px}
.hero-sub{font-size:18px;line-height:1.75;color:var(--dark-2);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:flex;gap:36px;margin-top:44px;flex-wrap:wrap}
.hero-stat b{display:block;font-size:24px;font-weight:700;color:var(--accent);line-height:1.25;font-variant-numeric:tabular-nums}
.hero-stat span{font-size:13px;color:var(--dark-2)}
.hero-visual{position:relative}
.hero-visual img{width:100%;border-radius:var(--r-lg);border:1px solid rgba(255,255,255,.14);box-shadow:0 32px 70px -30px rgba(106,61,232,.75)}
.hero-visual::after{content:"";position:absolute;inset:auto 0 -1px 0;height:1px;background:linear-gradient(90deg,rgba(106,61,232,.9),rgba(198,242,78,.9))}

/* ============ 锚点导航条 ============ */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:110;
  background:rgba(247,245,255,.92);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:56px;display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-link{padding:8px 14px;border-radius:var(--r-pill);font-size:14px;font-weight:500;color:var(--ink-2);white-space:nowrap;transition:.2s ease}
.anchor-link:hover{background:var(--primary-50);color:var(--primary)}
.anchor-link.is-active{background:var(--primary);color:#fff}

/* ============ 区块 ============ */
.section{padding:96px 0;position:relative}
.section-head{max-width:760px;margin-bottom:40px}
.section-head p{margin-top:14px;font-size:16px;color:var(--ink-2);max-width:720px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.section-tint{background:var(--bg)}
.section-soft{background:var(--surface-2)}
.section-dotted::before{
  content:"";position:absolute;top:0;right:0;width:420px;height:34%;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(106,61,232,.16) 1px,transparent 1px);background-size:18px 18px;
}

/* ============ 卡片 ============ */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-md);padding:26px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:var(--line-strong)}
.card-icon{width:32px;height:32px;border-radius:9px;background:var(--surface-2);color:var(--primary);display:grid;place-items:center;transition:background .22s ease}
.card:hover .card-icon{background:var(--primary-50)}
.card h3{margin:16px 0 8px}
.card p{font-size:14.5px;line-height:1.8;color:var(--ink-2)}
.card-foot{margin-top:18px}

/* ============ Bento 卖点 ============ */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-12{grid-column:span 12}
.bento-large{display:flex;flex-direction:column;gap:22px;padding:0;overflow:hidden}
.bento-large .bento-media{border-radius:0;overflow:hidden}
.bento-large .bento-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.bento-large .bento-body{padding:0 26px 26px}
.card-wide{display:flex;gap:20px;align-items:flex-start}
.card-wide .card-icon{flex:none}

/* ============ 演示区 ============ */
.demo-wrap{display:grid;grid-template-columns:260px 1fr;gap:40px;align-items:start}
.demo-tabs{display:flex;flex-direction:column;gap:10px}
.demo-tab{
  text-align:left;padding:14px 18px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--surface);font-size:14px;font-weight:600;color:var(--ink-2);cursor:pointer;
  transition:.2s ease;
}
.demo-tab:hover{border-color:var(--line-strong);color:var(--primary)}
.demo-tab.is-active{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:var(--sh-md)}
.demo-stage{min-width:0}
.demo-device{background:var(--dark);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-lg);padding:14px}
.demo-dots{display:flex;gap:6px;margin-bottom:12px}
.demo-dots i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.22)}
.demo-device img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px}
.demo-caption{margin-top:14px;font-size:13px;color:var(--ink-3);text-align:center}

/* ============ 证据区 ============ */
.proof-stats{display:grid;grid-template-columns:repeat(4,1fr);margin-bottom:56px}
.proof-stat{padding:6px 28px;border-left:1px solid var(--line)}
.proof-stat:first-child{border-left:0;padding-left:0}
.proof-stat b{display:block;font-size:32px;font-weight:700;line-height:1.2;color:var(--ink);font-variant-numeric:tabular-nums}
.proof-stat b em{font-style:normal;color:var(--primary)}
.proof-stat span{display:block;margin-top:6px;font-size:13px;color:var(--ink-3)}
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-bottom:56px}
.logo-chip{
  height:40px;border-radius:8px;background:var(--surface-2);border:1px solid var(--line);
  display:grid;place-items:center;font-size:13px;color:var(--ink-3);filter:grayscale(1);
  transition:.25s ease;
}
.logo-chip:hover{filter:grayscale(0);color:var(--primary);border-color:var(--line-strong);box-shadow:var(--sh-md)}
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.quote{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-md);overflow:hidden}
.quote::before{content:"“";position:absolute;top:2px;left:18px;font-size:72px;line-height:1;color:rgba(106,61,232,.12);font-family:Georgia,serif}
.quote p{position:relative;font-size:15px;line-height:1.9;color:var(--ink-2)}
.quote-user{display:flex;align-items:center;gap:12px;margin-top:20px}
.quote-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--primary-50),#E8F8C4);flex:none}
.quote-user span{font-size:14px;color:var(--ink-3)}

/* ============ 价格 ============ */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.price-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-md);transition:.24s ease}
.price-card:hover{box-shadow:var(--sh-lg);border-color:var(--line-strong);transform:translateY(-2px)}
.price-card.is-featured{border:1.5px solid var(--primary);box-shadow:var(--sh-lg);transform:translateY(-8px)}
.price-card.is-featured:hover{transform:translateY(-10px)}
.price-tag{position:absolute;top:-13px;left:32px}
.price-name{font-size:16px;font-weight:600;color:var(--ink)}
.price-amount{margin-top:14px;font-size:32px;font-weight:700;line-height:1.2;font-variant-numeric:tabular-nums;color:var(--ink)}
.price-amount small{font-size:13px;font-weight:500;color:var(--ink-3);margin-left:6px}
.price-desc{margin-top:8px;font-size:13px;color:var(--ink-3)}
.price-list{margin:24px 0;padding-top:24px;border-top:1px solid var(--line)}
.price-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-2);line-height:2.2}
.price-list li svg{flex:none;margin-top:7px;color:var(--primary)}
.price-card .btn{width:100%}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.news-card{
  display:flex;flex-direction:column;padding:14px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-md);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:var(--line-strong)}
.news-thumb{border-radius:12px;overflow:hidden;aspect-ratio:16/9;background:var(--surface-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-card .badge{margin-top:14px;align-self:flex-start}
.news-card h3{margin:10px 0 8px;font-size:17px;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .news-summary{font-size:14px;line-height:1.7;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--ink-3)}
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line-strong);border-radius:var(--r-card);background:var(--surface);text-align:center;padding:32px;
}
.empty-icon{width:48px;height:48px;border-radius:14px;background:var(--primary-50);color:var(--primary);display:grid;place-items:center}
.empty-state p{font-size:14px;color:var(--ink-2)}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);transition:background .2s ease}
.faq-item[open]{background:rgba(106,61,232,.04)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none;
}
.faq-q::-webkit-details-marker{display:none}
.faq-icon{position:relative;width:20px;height:20px;flex:none;transition:transform .25s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px}
.faq-icon::before{left:50%;top:3px;bottom:3px;width:2px;transform:translateX(-50%)}
.faq-icon::after{top:50%;left:3px;right:3px;height:2px;transform:translateY(-50%)}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-a{padding:0 4px 24px;font-size:15px;line-height:1.9;color:var(--ink-2);max-width:760px}

/* ============ 结尾 CTA ============ */
.cta-band{position:relative;background:var(--dark);color:#fff;padding:96px 0;overflow:hidden;text-align:center}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);background-size:20px 20px;
}
.cta-band::after{
  content:"";position:absolute;top:-160px;right:-120px;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,242,78,.14),transparent 66%);pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:640px;margin:0 auto;padding:0 24px}
.cta-inner h2{color:#fff}
.cta-inner p{margin:16px 0 0;color:var(--dark-2);font-size:16px}
.cta-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:16px;justify-content:center;align-items:center}
.cta-link{color:var(--accent);font-size:15px;font-weight:600}
.cta-link:hover{text-decoration:underline;text-underline-offset:3px}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--dark);color:var(--dark-2);overflow:hidden;padding-top:72px}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.45;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:22px 22px;
}
.footer-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--accent);color:var(--ink)}
.footer-brand span{font-size:17px;font-weight:700;color:#fff}
.footer-desc{font-size:14px;line-height:1.85;color:var(--dark-2);max-width:320px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-link{display:block;font-size:14px;color:var(--dark-2);padding:5px 0;transition:color .2s ease}
.footer-link:hover{color:var(--accent)}
.footer-bottom{
  position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:12px;color:var(--dark-2);
}
.footer-note{font-size:13px;color:var(--ink-3)}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:100;display:flex;flex-direction:column;gap:10px;align-items:flex-end;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .3s ease,transform .3s ease,visibility .3s;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}
.float-cta a,.float-cta button{
  display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 18px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;cursor:pointer;box-shadow:var(--sh-lg);transition:.2s ease;
}
.float-primary{background:var(--primary);color:#fff}
.float-primary:hover{background:var(--primary-700);transform:translateY(-1px)}
.float-top{background:var(--surface);color:var(--ink-2);border:1px solid var(--line)!important}
.float-top:hover{color:var(--primary);border-color:var(--line-strong)!important}
.mobile-bar{display:none}

/* ============ 抽屉 ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(21,15,46,.5);opacity:0;visibility:hidden;transition:.25s ease;z-index:140}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;background:var(--surface);z-index:150;
  transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column;
}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:32px;height:32px;border-radius:8px;font-size:20px;line-height:1;color:var(--ink-2);cursor:pointer}
.drawer-search{padding:16px 20px 8px}
.drawer-search input{width:100%;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);padding:0 14px;font-size:14px;background:var(--surface-2)}
.drawer-nav{padding:8px 20px;flex:1;overflow-y:auto}
.drawer-nav a{display:block;font-size:15px;color:var(--ink-2);padding:0 4px;height:52px;line-height:52px;border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--primary);font-weight:600}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .main-nav{gap:20px}
  .cmd-search{width:190px}
  .cmd-search:focus-within{width:240px}
}
@media (max-width:1023px){
  .main-nav,.cmd-search,.quick-link{display:none}
  .hamburger{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero{padding:64px 0 72px}
  .bento{grid-template-columns:repeat(6,1fr)}
  .span-3{grid-column:span 3}
  .span-4{grid-column:span 3}
  .span-6{grid-column:span 6}
  .pricing-grid{grid-template-columns:repeat(3,1fr);gap:16px}
  .price-card{padding:24px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .demo-wrap{grid-template-columns:1fr;gap:24px}
  .demo-tabs{flex-direction:row;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
  .demo-tabs::-webkit-scrollbar{display:none}
  .demo-tab{white-space:nowrap}
  .proof-stats{grid-template-columns:repeat(2,1fr);gap:24px 0}
  .proof-stat:nth-child(3){border-left:0;padding-left:0}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
}
@media (max-width:767px){
  :root{--header-h:56px}
  .container,.container-wide{padding:0 16px}
  .header-inner{padding:0 16px}
  .section{padding:56px 0}
  .hero-grid{padding:0 16px}
  .hero-stats{gap:24px}
  .bento{grid-template-columns:1fr;gap:16px}
  .span-3,.span-4,.span-6{grid-column:span 1 / -1}
  .card-wide{flex-direction:column}
  .pricing-grid,.news-grid,.quote-grid,.proof-stats{grid-template-columns:1fr}
  .proof-stat{border-left:0;padding:8px 0}
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:32px}
  .section-head-row{flex-direction:column;align-items:flex-start}
  .faq-q{font-size:15px;padding:18px 2px}
}
@media (max-width:639px){
  .float-cta{display:none}
  .mobile-bar{
    display:flex;align-items:center;gap:12px;position:fixed;left:0;right:0;bottom:0;height:56px;
    padding:0 16px;background:rgba(255,255,255,.94);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    border-top:1px solid var(--line);z-index:130;
  }
  .mobile-bar .btn{flex:1}
  .mobile-bar .mobile-text{font-size:14px;font-weight:600;color:var(--primary);white-space:nowrap}
  body{padding-bottom:72px}
  .hero-cta .btn{width:100%}
  .cta-actions .btn{width:100%}
}
@media (max-width:380px){
  .anchor-link:nth-child(n+4){display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --primary:#6A3DE8;
  --primary-700:#5527D6;
  --primary-50:#F1ECFF;
  --accent:#C6F24E;
  --warm:#FF7A45;
  --bg:#F7F5FF;
  --surface:#FFFFFF;
  --surface-2:#EFEBFB;
  --dark:#150F2E;
  --dark-2:#B9B3D6;
  --ink:#14102B;
  --ink-2:#4A4560;
  --ink-3:#7A7396;
  --line:#E6E1F5;
  --line-strong:#CBBFF2;
  --success:#17B26A;
  --success-bg:#E7F8F0;
  --warning:#F5A524;
  --warning-bg:#FEF5E4;
  --error:#E5484D;
  --error-bg:#FDECEC;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(20,16,43,.06);
  --sh-md:0 8px 24px -10px rgba(20,16,43,.18);
  --sh-lg:0 20px 48px -18px rgba(20,16,43,.28);
  --sp-4:4px; --sp-8:8px; --sp-12:12px; --sp-16:16px; --sp-20:20px;
  --sp-24:24px; --sp-32:32px; --sp-40:40px; --sp-48:48px;
  --sp-64:64px; --sp-96:96px; --sp-128:128px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-700)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:var(--primary-50);color:var(--primary-700)}
.container{max-width:1200px;margin:0 auto;padding:0 var(--sp-24)}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 var(--sp-24);border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,
             box-shadow .2s ease,transform .15s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--primary-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(1px)}
.btn-secondary{background:var(--surface);color:var(--primary);border-color:var(--line-strong)}
.btn-secondary:hover{background:var(--primary-50);color:var(--primary-700);border-color:var(--primary)}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{background:#D2F96A;color:var(--ink);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--primary);padding:0 var(--sp-12);height:38px}
.btn-ghost:hover{color:var(--primary-700);text-decoration:underline;text-underline-offset:3px}
.btn-sm{height:38px;padding:0 var(--sp-20);font-size:14px}
.btn-xs{height:32px;padding:0 var(--sp-16);font-size:13px;border-radius:var(--r-btn)}
.btn:disabled,.btn.is-disabled{background:var(--line);color:#A9A2C4;cursor:not-allowed;transform:none;box-shadow:none}
.btn.is-loading{position:relative;color:transparent}
.btn.is-loading::after{
  content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.4);border-top-color:#fff;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,255,.82);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-sm);background:rgba(247,245,255,.94)}
.header-inner{display:flex;align-items:center;gap:var(--sp-24);height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-size:17px;font-weight:700;letter-spacing:.01em}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--primary);color:#fff;
  display:grid;place-items:center;font-size:12px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 4px 12px -6px rgba(106,61,232,.9);
}
.main-nav{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;font-size:14px;font-weight:500;color:var(--ink-2);
  padding:6px 0;line-height:1.4;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-tools{display:flex;align-items:center;gap:var(--sp-16);margin-left:auto}
.cmd-search{position:relative;width:240px;transition:width .28s ease}
.cmd-search:focus-within{width:320px}
.cmd-icon{position:absolute;left:11px;top:50%;transform:translateY(-50%);color:var(--ink-3);display:flex;pointer-events:none}
.cmd-input{
  width:100%;height:36px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:var(--surface);padding:0 56px 0 34px;font-size:14px;color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cmd-input::placeholder{color:var(--ink-3)}
.cmd-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-50)}
.cmd-kbd{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:11px;color:var(--ink-3);background:var(--surface-2);
  border:1px solid var(--line);border-radius:6px;padding:1px 6px;line-height:1.6;
}
.header-quick{font-size:14px;font-weight:500;color:var(--ink-2);white-space:nowrap}
.header-quick:hover{color:var(--primary)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:90;
  background:var(--surface);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .3s ease;
  display:flex;flex-direction:column;padding:var(--sp-20);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);box-shadow:var(--sh-lg)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-20)}
.drawer-title{font-size:16px;font-weight:700}
.drawer-close{width:36px;height:36px;border-radius:var(--r-btn);border:1px solid var(--line);display:grid;place-items:center;font-size:18px;color:var(--ink-2)}
.drawer-search{width:100%;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);background:var(--bg);padding:0 var(--sp-16);font-size:14px;margin-bottom:var(--sp-12)}
.drawer-search:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-50)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-link{display:flex;align-items:center;height:52px;font-size:15px;color:var(--ink-2);border-bottom:1px solid var(--line)}
.drawer-link.is-active{color:var(--primary);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:var(--sp-20)}
.drawer-foot .btn{width:100%}
.drawer-mask{position:fixed;inset:0;background:rgba(21,15,46,.45);z-index:80;opacity:0;pointer-events:none;transition:opacity .3s ease}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

/* ============ 面包屑 ============ */
.breadcrumb-bar{border-bottom:1px solid var(--line);background:var(--surface)}
.breadcrumb{
  display:flex;align-items:center;gap:8px;height:56px;font-size:14px;color:var(--ink-3);
  white-space:nowrap;overflow-x:auto;scrollbar-width:none;
}
.breadcrumb::-webkit-scrollbar{display:none}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--primary);font-weight:500;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头部 ============ */
.article-head{padding:var(--sp-48) 0 var(--sp-32);max-width:760px}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;
  border-radius:var(--r-pill);font-size:11px;font-weight:600;letter-spacing:.02em;
  background:var(--accent);color:var(--ink);
}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--primary-700);opacity:.75}
.badge-soft{background:var(--primary-50);color:var(--primary-700)}
.article-title{
  margin-top:var(--sp-20);
  font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:700;
  letter-spacing:-.01em;color:var(--ink);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-16);
  margin-top:var(--sp-24);font-size:14px;color:var(--ink-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong)}
.article-meta strong{color:var(--ink-2);font-weight:600}
.hero-strip{
  position:relative;margin-top:var(--sp-32);border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--surface-2);aspect-ratio:21/9;
}
.hero-strip img{width:100%;height:100%;object-fit:cover}
.hero-strip::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(21,15,46,.05),rgba(21,15,46,.42));
}
.hero-strip-cap{
  position:absolute;left:var(--sp-24);bottom:var(--sp-20);z-index:2;
  color:#fff;font-size:13px;letter-spacing:.02em;
}

/* ============ 正文布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:var(--sp-48);
  padding-bottom:var(--sp-96);
}
.article-body{min-width:0;max-width:760px;width:100%}
@media(min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,760px) 260px;justify-content:center;gap:56px}
}
.side-col{display:flex;flex-direction:column;gap:var(--sp-20)}
@media(min-width:1280px){
  .side-sticky{position:sticky;top:88px;display:flex;flex-direction:column;gap:var(--sp-20)}
}

/* 正文排版 */
.prose-cn{font-size:17px;line-height:1.95;color:var(--ink-2);max-width:760px}
.prose-cn > * + *{margin-top:1.2em}
.prose-cn h2{
  font-size:clamp(24px,2.6vw,28px);line-height:1.35;font-weight:700;color:var(--ink);
  margin-top:2.1em;padding-left:14px;border-left:4px solid var(--primary);
}
.prose-cn h3{font-size:20px;line-height:1.45;font-weight:600;color:var(--ink);margin-top:1.7em}
.prose-cn h4{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink);margin-top:1.4em}
.prose-cn p{text-align:left;text-indent:0}
.prose-cn a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.prose-cn a:hover{color:var(--primary-700);text-decoration-thickness:2px}
.prose-cn ul,.prose-cn ol{padding-left:1.3em}
.prose-cn li{margin-top:.5em}
.prose-cn li::marker{color:var(--primary)}
.prose-cn img{border-radius:var(--r-lg);border:1px solid var(--line);margin:1.6em auto;width:100%}
.prose-cn blockquote{
  margin:1.6em 0;padding:var(--sp-20) var(--sp-24);
  background:var(--surface-2);border-left:4px solid var(--line-strong);
  border-radius:0 var(--r-card) var(--r-card) 0;color:var(--ink-2);font-size:16px;
}
.prose-cn blockquote p{margin:0}
.prose-cn code{
  background:var(--surface-2);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;font-size:14px;color:var(--primary-700);
}
.prose-cn table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0;display:block;overflow-x:auto}
.prose-cn th,.prose-cn td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.prose-cn th{background:var(--surface-2);color:var(--ink);font-weight:600}
.prose-cn hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.prose-cn strong{color:var(--ink);font-weight:600}

/* ============ 空态 ============ */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-16);
  min-height:280px;padding:var(--sp-48) var(--sp-24);text-align:center;
  border:1px dashed var(--line-strong);border-radius:var(--r-card);background:var(--surface);
}
.empty-icon{
  width:48px;height:48px;border-radius:var(--r-card);background:var(--primary-50);
  display:grid;place-items:center;color:var(--primary);
}
.empty-state p{font-size:15px;color:var(--ink-2)}
.empty-state .hint{font-size:14px;color:var(--ink-3);max-width:420px}

/* ============ 正文尾部 ============ */
.article-foot{margin-top:var(--sp-48);padding-top:var(--sp-32);border-top:1px solid var(--line)}
.tag-list{display:flex;flex-wrap:wrap;gap:var(--sp-8)}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--surface-2);border:1px solid var(--line);font-size:13px;color:var(--ink-2);
}
.tag:hover{background:var(--primary-50);border-color:var(--line-strong);color:var(--primary-700)}
.foot-block{margin-top:var(--sp-40)}
.foot-title{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:var(--sp-16)}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-16)}
.related-card{
  display:flex;gap:var(--sp-16);padding:var(--sp-16);border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:var(--line-strong);color:inherit}
.related-thumb{
  flex:0 0 84px;width:84px;aspect-ratio:4/3;border-radius:12px;overflow:hidden;background:var(--surface-2);
}
.related-thumb img{width:100%;height:100%;object-fit:cover}
.related-body{min-width:0}
.related-body h4{font-size:15px;font-weight:600;color:var(--ink);line-height:1.5}
.related-body p{margin-top:6px;font-size:13px;line-height:1.65;color:var(--ink-3)}
.back-row{display:flex;flex-wrap:wrap;gap:var(--sp-12);margin-top:var(--sp-32)}

/* ============ 侧栏 ============ */
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:var(--sp-20);box-shadow:var(--sh-sm);
}
.side-card h3{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:var(--sp-12)}
.side-list{display:flex;flex-direction:column;gap:var(--sp-8)}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-size:14px;color:var(--ink-2);padding:8px 10px;border-radius:8px;
  transition:background-color .2s ease,color .2s ease;
}
.side-list a:hover{background:var(--primary-50);color:var(--primary-700)}
.side-dark{
  background:var(--dark);border:1px solid rgba(203,191,242,.28);border-radius:var(--r-card);
  padding:var(--sp-20);color:#fff;
}
.side-dark h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:var(--sp-8)}
.side-dark p{font-size:13px;line-height:1.7;color:var(--dark-2);margin-bottom:var(--sp-16)}
.side-dark .btn{width:100%}

/* ============ 结尾 CTA ============ */
.cta-section{
  position:relative;overflow:hidden;background:var(--dark);color:#fff;
  padding:var(--sp-96) 0;text-align:center;
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(198,242,78,.14) 1px,transparent 1px);
  background-size:22px 22px;opacity:.6;pointer-events:none;
}
.cta-section::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(198,242,78,.18);pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:640px;margin:0 auto}
.cta-inner h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700}
.cta-inner p{margin-top:var(--sp-16);font-size:16px;line-height:1.85;color:var(--dark-2)}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:var(--sp-16);margin-top:var(--sp-32)}
.cta-link{color:var(--accent);font-size:15px;font-weight:600}
.cta-link:hover{color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:var(--dark-2);padding-top:var(--sp-64)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:var(--sp-40);padding-bottom:var(--sp-48)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:var(--sp-16)}
.footer-brand .brand-mark{background:var(--accent);color:var(--ink)}
.footer-desc{font-size:14px;line-height:1.8;max-width:320px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:var(--sp-16)}
.footer-link{display:block;font-size:14px;color:var(--dark-2);padding:5px 0;transition:color .2s ease}
.footer-link:hover{color:var(--accent)}
.footer-note{font-size:13px;color:var(--ink-3);margin-top:var(--sp-8)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:var(--sp-12);justify-content:space-between;
  padding:var(--sp-20) 0;border-top:1px solid rgba(203,191,242,.16);
  font-size:12px;color:var(--ink-3);
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:50;
  display:flex;flex-direction:column;align-items:flex-end;gap:var(--sp-12);
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .3s ease,transform .3s ease;
}
.float-cta.is-visible{opacity:1;pointer-events:auto;transform:none}
.float-cta .btn{border-radius:var(--r-pill);box-shadow:var(--sh-lg)}
.back-top{
  width:44px;height:44px;border-radius:50%;background:var(--surface);
  border:1px solid var(--line-strong);color:var(--primary);
  display:grid;place-items:center;box-shadow:var(--sh-md);
  transition:background-color .2s ease,transform .2s ease;
}
.back-top:hover{background:var(--primary-50);transform:translateY(-2px)}
.mobile-bar{display:none}

/* ============ 图片降级 ============ */
.img-fallback{
  background:linear-gradient(135deg,#EDE6FF 0%,#DCD2FF 42%,#E8F9C4 100%);
  border:1px solid var(--line);
}

/* ============ 响应式 ============ */
@media(max-width:1279px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:1023px){
  .main-nav{display:none}
  .cmd-search{display:none}
  .header-quick{display:none}
  .nav-toggle{display:flex}
  .cta-section{padding:72px 0}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-32)}
}
@media(max-width:767px){
  .container{padding:0 16px}
  .header-inner{height:56px;gap:12px}
  .brand{font-size:15px}
  .article-head{padding:32px 0 24px}
  .article-layout{gap:var(--sp-32);padding-bottom:72px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .cta-section{padding:56px 0}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:0;padding-bottom:var(--sp-32)}
  .footer-col{border-bottom:1px solid rgba(203,191,242,.16);padding:var(--sp-16) 0}
  .footer-grid > div:first-child{border-bottom:1px solid rgba(203,191,242,.16);padding-bottom:var(--sp-20)}
  .footer-title{margin-bottom:var(--sp-8);line-height:52px;margin-top:0;cursor:default}
  .footer-desc{max-width:none}
}
@media(max-width:639px){
  .float-cta{display:none}
  .mobile-bar{
    display:flex;align-items:center;gap:var(--sp-12);
    position:fixed;left:0;right:0;bottom:0;height:56px;z-index:55;
    padding:0 16px;background:var(--surface);border-top:1px solid var(--line);
    box-shadow:0 -8px 24px -16px rgba(20,16,43,.35);
  }
  .mobile-bar .btn{flex:1}
  body{padding-bottom:72px}
  .breadcrumb{height:48px}
  .breadcrumb .current{max-width:200px}
  .article-meta{gap:var(--sp-12)}
}
@media(max-width:380px){
  .header-quick{display:none}
}

/* roulang page: category1 */
/* ============ 设计令牌 ============ */
:root{
  --primary:#6A3DE8;
  --primary-700:#5527D6;
  --primary-50:#F1ECFF;
  --accent:#C6F24E;
  --warm:#FF7A45;
  --bg:#F7F5FF;
  --surface:#FFFFFF;
  --surface-2:#EFEBFB;
  --dark:#150F2E;
  --dark-2:#B9B3D6;
  --ink:#14102B;
  --ink-2:#4A4560;
  --ink-3:#7A7396;
  --line:#E6E1F5;
  --line-strong:#CBBFF2;
  --success:#17B26A;
  --success-bg:#E7F8F0;
  --warn:#F5A524;
  --warn-bg:#FEF5E4;
  --error:#E5484D;
  --error-bg:#FDECEC;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(20,16,43,.06);
  --sh-md:0 8px 24px -10px rgba(20,16,43,.18);
  --sh-lg:0 20px 48px -18px rgba(20,16,43,.28);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:20px; --sp-6:24px;
  --sp-8:32px; --sp-10:40px; --sp-12:48px; --sp-16:64px; --sp-24:96px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","PingFang SC","Microsoft YaHei",system-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-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.15em;}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;background-color:transparent;}
a:hover{color:var(--primary-700);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;padding:0;}
table{border-collapse:collapse;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ 布局容器 ============ */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-inline:var(--sp-6);
}
.section{padding-block:var(--sp-24);}
.section-tight{padding-block:var(--sp-16);}
.section-head{margin-bottom:var(--sp-10);max-width:720px;}
.section-head h2{margin-bottom:var(--sp-3);}
.eyebrow{
  display:inline-flex;align-items:center;gap:var(--sp-2);
  font-size:12px;line-height:1.5;font-weight:600;letter-spacing:.06em;
  color:var(--primary);background:var(--primary-50);
  border-radius:var(--r-pill);padding:5px 12px;margin-bottom:var(--sp-4);
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(198,242,78,.35);}

/* ============ 字号层级 ============ */
h1,.h1{font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:700;letter-spacing:-.01em;}
h2,.h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
h3,.h3{font-size:20px;line-height:1.45;font-weight:600;}
h4,.h4{font-size:17px;line-height:1.5;font-weight:600;}
.lead{font-size:17px;line-height:1.85;color:var(--ink-2);}
.muted{color:var(--ink-3);font-size:14px;line-height:1.6;}
.tiny{font-size:12px;line-height:1.5;color:var(--ink-3);}
.prose-cn p{max-width:720px;margin-bottom:1.2em;color:var(--ink-2);text-align:left;text-indent:0;}
.prose-cn p:last-child{margin-bottom:0;}
.prose-cn h3{margin:var(--sp-6) 0 var(--sp-3);}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);
  font-size:15px;font-weight:600;line-height:1;border-radius:var(--r-btn);
  border:1px solid transparent;transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
  white-space:nowrap;text-align:center;
}
.btn-lg{height:44px;padding-inline:var(--sp-6);}
.btn-md{height:38px;padding-inline:var(--sp-5);}
.btn-sm{height:32px;padding-inline:var(--sp-4);font-size:14px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--primary-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-secondary{background:#fff;color:var(--primary);border-color:var(--line-strong);}
.btn-secondary:hover{background:var(--primary-50);color:var(--primary-700);border-color:var(--primary);}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{background:#D3F76B;color:var(--ink);transform:translateY(-1px);}
.btn-ghost{color:var(--primary);background:transparent;padding-inline:var(--sp-2);}
.btn-ghost:hover{color:var(--primary-700);text-decoration:underline;text-underline-offset:3px;}
.btn[disabled],.btn.is-disabled{background:var(--line);color:#A9A2C4;cursor:not-allowed;box-shadow:none;transform:none;}
.btn.is-loading{position:relative;pointer-events:none;}
.btn.is-loading::before{
  content:"";width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11px;font-weight:600;line-height:1.5;letter-spacing:.04em;
  padding:3px 10px;border-radius:var(--r-pill);
  background:var(--accent);color:var(--ink);
}
.badge-soft{background:var(--primary-50);color:var(--primary);}
.badge-warm{background:#FFEDE5;color:#C2431A;}
.tag{
  display:inline-block;font-size:13px;color:var(--ink-2);
  border:1px solid var(--line);border-radius:var(--r-pill);
  padding:4px 12px;background:#fff;
}

/* ============ Header / 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  height:64px;
  background:rgba(247,245,255,.72);
  backdrop-filter:saturate(160%) blur(0px);
  border-bottom:1px solid transparent;
  transition:background-color .2s ease,border-color .2s ease,backdrop-filter .2s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:var(--sp-6);height:64px;}
.brand{display:inline-flex;align-items:center;gap:var(--sp-3);flex-shrink:0;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:28px;height:28px;border-radius:8px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary);color:#fff;font-family:var(--font-num);
  font-size:12px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 4px 12px -6px rgba(106,61,232,.7);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;}
.main-nav{display:flex;align-items:center;gap:28px;margin-inline:auto;}
.nav-link{
  position:relative;font-size:14px;font-weight:500;color:var(--ink-2);
  padding-block:6px;transition:color .16s ease;
}
.nav-link:hover{color:var(--primary);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  border-radius:2px;background:var(--primary);
}
.header-actions{display:flex;align-items:center;gap:var(--sp-4);flex-shrink:0;}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:var(--sp-2);
  width:240px;height:36px;padding-inline:var(--sp-3);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  transition:width .22s ease,border-color .18s ease,box-shadow .18s ease;
}
.cmd-search:focus-within{
  width:320px;border-color:var(--primary);
  box-shadow:0 0 0 3px var(--primary-50);
}
.cmd-search svg{width:16px;height:16px;flex-shrink:0;stroke:var(--ink-3);fill:none;stroke-width:1.8;}
.cmd-search input{
  flex:1;min-width:0;border:none;background:transparent;font-size:14px;
  height:100%;padding:0;
}
.cmd-search input::placeholder{color:var(--ink-3);}
.kbd{
  font-family:var(--font-num);font-size:11px;color:var(--ink-3);
  border:1px solid var(--line);border-radius:6px;padding:1px 5px;background:var(--bg);
  flex-shrink:0;
}
.search-panel{
  position:absolute;top:calc(100% + 10px);right:0;width:340px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-lg);padding:var(--sp-4);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
  z-index:70;
}
.cmd-search:focus-within .search-panel{opacity:1;visibility:visible;transform:translateY(0);}
.sp-group + .sp-group{margin-top:var(--sp-4);padding-top:var(--sp-4);border-top:1px solid var(--line);}
.sp-title{font-size:12px;color:var(--ink-3);font-weight:600;letter-spacing:.04em;margin-bottom:var(--sp-2);}
.sp-link{display:block;font-size:14px;color:var(--ink-2);padding:6px 8px;border-radius:8px;}
.sp-link:hover{background:var(--primary-50);color:var(--primary);}
.quick-link{font-size:14px;font-weight:500;color:var(--primary);}
.quick-link:hover{text-decoration:underline;text-underline-offset:3px;}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;
}
.menu-toggle svg{width:20px;height:20px;stroke:var(--ink);fill:none;stroke-width:1.8;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(21,15,46,.42);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;
  background:#fff;z-index:90;transform:translateX(100%);
  transition:transform .26s ease;display:flex;flex-direction:column;
  box-shadow:var(--sh-lg);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{padding:var(--sp-4);border-bottom:1px solid var(--line);}
.drawer-nav{padding:var(--sp-2) var(--sp-4);overflow-y:auto;flex:1;}
.drawer-link{
  display:flex;align-items:center;height:52px;font-size:15px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--primary);font-weight:600;}
.drawer-foot{padding:var(--sp-4);border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;align-items:center;gap:var(--sp-2);
  font-size:14px;color:var(--ink-3);
  padding-block:var(--sp-5);
  overflow-x:auto;white-space:nowrap;
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb .current{color:var(--primary);font-weight:600;}

/* ============ 页头 ============ */
.page-hero{position:relative;padding-bottom:var(--sp-16);}
.page-hero::before{
  content:"";position:absolute;top:0;right:0;width:340px;height:220px;
  background-image:radial-gradient(var(--line-strong) 1px,transparent 1px);
  background-size:16px 16px;opacity:.35;pointer-events:none;
  mask-image:linear-gradient(180deg,#000,transparent 90%);
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 90%);
}
.page-hero-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:var(--sp-12);align-items:center;
  position:relative;z-index:1;
}
.page-hero h1{margin-bottom:var(--sp-5);}
.page-hero .lead{max-width:640px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:var(--sp-4);margin-top:var(--sp-8);}
.hero-meta-item{display:flex;align-items:center;gap:var(--sp-2);font-size:13px;color:var(--ink-3);}
.hero-meta-item .num{font-size:18px;font-weight:700;color:var(--ink);}
.hero-meta-item .bar{width:3px;height:16px;border-radius:2px;background:var(--warm);}
.media-frame{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--line);background:linear-gradient(135deg,var(--primary-50),#E9F9C6);
  box-shadow:var(--sh-md);
}
.media-frame.ratio-43{aspect-ratio:4/3;}
.media-frame.ratio-169{aspect-ratio:16/9;}
.media-frame img{width:100%;height:100%;object-fit:cover;}
.media-caption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:var(--sp-3);}

/* ============ 双栏：粘性目录 + 长内容 ============ */
.layout-sidebar{
  display:grid;grid-template-columns:240px minmax(0,1fr);
  gap:var(--sp-12);
  align-items:start;
}
.toc{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:var(--sp-5);box-shadow:var(--sh-sm);
}
.toc-title{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--ink-3);margin-bottom:var(--sp-4);}
.toc-list{list-style:none;margin:0;padding:0;}
.toc-list li + li{margin-top:var(--sp-1);}
.toc-link{
  display:block;font-size:14px;line-height:1.6;color:var(--ink-2);
  padding:8px 10px;border-radius:8px;border-left:2px solid transparent;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.toc-link:hover{background:var(--primary-50);color:var(--primary);}
.toc-link.is-active{background:var(--primary-50);color:var(--primary);font-weight:600;border-left-color:var(--primary);}
.toc-foot{margin-top:var(--sp-5);padding-top:var(--sp-4);border-top:1px solid var(--line);}
.toc-foot .btn{width:100%;}

/* ============ 内容小节 ============ */
.content-block + .content-block{
  margin-top:var(--sp-16);padding-top:var(--sp-16);border-top:1px solid var(--line);
}
.block-head{margin-bottom:var(--sp-6);}
.block-index{
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--warm);
  letter-spacing:.08em;display:block;margin-bottom:var(--sp-2);
}
.block-head h2{margin-bottom:var(--sp-3);}
.media-row{
  display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-8);
  align-items:center;margin-block:var(--sp-8);
}
.media-row.reverse .media-col{order:2;}
.media-row.reverse .text-col{order:1;}
.check-list{list-style:none;margin:var(--sp-5) 0 0;padding:0;}
.check-list li{
  position:relative;padding-left:30px;font-size:15px;color:var(--ink-2);
  line-height:1.75;
}
.check-list li + li{margin-top:var(--sp-3);}
.check-list li::before{
  content:"";position:absolute;left:0;top:6px;width:18px;height:18px;
  border-radius:6px;background:var(--primary-50);border:1px solid var(--line-strong);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:11px;width:7px;height:4px;
  border-left:2px solid var(--primary);border-bottom:2px solid var(--primary);
  transform:rotate(-45deg);
}
.note{
  display:flex;gap:var(--sp-3);align-items:flex-start;
  background:var(--warn-bg);border:1px solid #F6DFB4;border-radius:var(--r-card);
  padding:var(--sp-4) var(--sp-5);margin-top:var(--sp-5);
}
.note .note-icon{
  width:20px;height:20px;flex-shrink:0;border-radius:50%;
  background:var(--warn);color:#fff;font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;line-height:1;margin-top:3px;
}
.note p{font-size:14px;line-height:1.75;color:var(--ink-2);margin:0;max-width:680px;}

/* ============ 快速对照清单 ============ */
.checklist-band{
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:var(--sp-10);
}
.checklist-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:var(--sp-4);
  margin-top:var(--sp-6);
}
.checklist-item{
  display:flex;gap:var(--sp-3);align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:var(--sp-5);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.checklist-item:hover{border-color:var(--line-strong);box-shadow:var(--sh-md);transform:translateY(-2px);}
.checklist-num{
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--primary);
  background:var(--primary-50);border-radius:8px;padding:3px 8px;flex-shrink:0;
}
.checklist-item h3{font-size:16px;margin-bottom:4px;}
.checklist-item p{font-size:14px;color:var(--ink-2);line-height:1.7;margin:0;}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);
  list-style:none;cursor:pointer;padding:var(--sp-5) var(--sp-4);
  font-size:16px;font-weight:600;color:var(--ink);
  transition:background-color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--primary-50);}
.faq-item summary .plus{
  position:relative;width:20px;height:20px;flex-shrink:0;
  transition:transform .22s ease;
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-item summary .plus::before{width:14px;height:2px;}
.faq-item summary .plus::after{width:2px;height:14px;}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-item[open] summary{background:var(--primary-50);}
.faq-body{padding:0 var(--sp-4) var(--sp-6);}
.faq-body p{font-size:15px;line-height:1.85;color:var(--ink-2);max-width:720px;margin-bottom:var(--sp-3);}
.faq-body p:last-child{margin-bottom:0;}

/* ============ 结尾 CTA ============ */
.cta-dark{
  position:relative;overflow:hidden;
  background:var(--dark);color:#fff;
  padding-block:var(--sp-24);
  margin-top:var(--sp-24);
}
.cta-dark::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(185,179,214,.28) 1px,transparent 1px);
  background-size:18px 18px;opacity:.5;pointer-events:none;
}
.cta-dark::after{
  content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;
  border-radius:50%;border:1px solid rgba(198,242,78,.22);pointer-events:none;
}
.cta-inner{position:relative;z-index:1;max-width:640px;margin:0 auto;text-align:center;}
.cta-inner h2{color:#fff;margin-bottom:var(--sp-4);}
.cta-inner .cta-sub{color:var(--dark-2);font-size:16px;line-height:1.8;margin-bottom:var(--sp-8);}
.cta-actions{display:flex;flex-wrap:wrap;gap:var(--sp-4);justify-content:center;align-items:center;}
.cta-note{margin-top:var(--sp-5);font-size:13px;color:var(--dark-2);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);color:var(--dark-2);
  padding-top:var(--sp-16);padding-bottom:var(--sp-8);
  border-top:1px solid rgba(198,242,78,.14);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:var(--sp-10);
  padding-bottom:var(--sp-10);
}
.footer-brand{display:flex;align-items:center;gap:var(--sp-3);color:#fff;font-size:17px;font-weight:700;margin-bottom:var(--sp-4);}
.footer-brand .brand-mark{box-shadow:none;}
.footer-desc{font-size:14px;line-height:1.8;color:var(--dark-2);max-width:320px;margin:0;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:var(--sp-4);}
.footer-link{display:block;font-size:14px;color:var(--dark-2);line-height:1.6;padding-block:6px;transition:color .16s ease;}
.footer-link:hover{color:var(--accent);}
.footer-note{font-size:14px;color:var(--dark-2);line-height:1.7;margin:var(--sp-2) 0 0;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:var(--sp-3);justify-content:space-between;
  border-top:1px solid rgba(185,179,214,.18);padding-top:var(--sp-5);
  font-size:12px;color:var(--dark-2);line-height:1.6;
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:var(--sp-6);bottom:var(--sp-6);z-index:50;
  display:flex;flex-direction:column;gap:var(--sp-3);align-items:flex-end;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .btn{box-shadow:var(--sh-lg);}
.back-top{
  width:44px;height:44px;border-radius:var(--r-pill);background:#fff;
  border:1px solid var(--line-strong);box-shadow:var(--sh-md);
  display:flex;align-items:center;justify-content:center;
  transition:background-color .18s ease,transform .18s ease;
}
.back-top:hover{background:var(--primary-50);transform:translateY(-2px);}
.back-top svg{width:18px;height:18px;stroke:var(--primary);fill:none;stroke-width:2;}
.mobile-cta-bar{display:none;}

/* ============ 内联文字链 ============ */
.text-links{list-style:none;margin:var(--sp-5) 0 0;padding:0;}
.text-links li{padding-block:var(--sp-2);border-bottom:1px dashed var(--line);}
.text-links li:last-child{border-bottom:none;}
.text-links a{font-size:15px;font-weight:500;}
.text-links a::after{content:" →";font-weight:400;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .layout-sidebar{grid-template-columns:200px minmax(0,1fr);gap:var(--sp-10);}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-actions .quick-link{display:none;}
  .cmd-search{width:200px;}
  .cmd-search:focus-within{width:260px;}
  .page-hero-grid{grid-template-columns:1fr;gap:var(--sp-8);}
  .layout-sidebar{grid-template-columns:1fr;gap:var(--sp-8);}
  .toc{position:static;}
  .toc-list{display:flex;flex-wrap:wrap;gap:var(--sp-2);}
  .toc-list li + li{margin-top:0;}
  .toc-link{border-left:none;border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px;font-size:13px;}
  .toc-link.is-active{border-color:var(--primary);}
  .toc-foot{display:none;}
  .section{padding-block:72px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-8);}
}
@media (max-width:767px){
  .container{padding-inline:var(--sp-4);}
  .site-header{height:56px;}
  .header-inner{height:56px;gap:var(--sp-3);}
  .cmd-search{display:none;}
  .header-actions .btn-primary{display:none;}
  .brand-text{font-size:16px;}
  .breadcrumb{padding-block:var(--sp-4);}
  .section{padding-block:56px;}
  .media-row{grid-template-columns:1fr;gap:var(--sp-5);}
  .media-row.reverse .media-col{order:0;}
  .media-row.reverse .text-col{order:0;}
  .checklist-grid{grid-template-columns:1fr;}
  .checklist-band{padding:var(--sp-6);}
  .cta-dark{padding-block:56px;margin-top:56px;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-title{padding-block:var(--sp-3);border-bottom:1px solid rgba(185,179,214,.18);}
  .float-cta{display:none;}
  .mobile-cta-bar{
    display:flex;gap:var(--sp-3);align-items:center;
    position:fixed;left:0;right:0;bottom:0;height:56px;z-index:55;
    padding-inline:var(--sp-4);
    background:rgba(255,255,255,.94);
    backdrop-filter:saturate(180%) blur(12px);
    border-top:1px solid var(--line);
  }
  .mobile-cta-bar .btn{flex:1;}
  .mobile-cta-bar .btn-ghost{flex:0 0 auto;}
  body{padding-bottom:72px;}
}
@media (max-width:520px){
  h1,.h1{letter-spacing:-.015em;}
  .hero-meta{flex-direction:column;gap:var(--sp-3);}
  .checklist-item{padding:var(--sp-4);}
}

/* roulang page: category2 */
:root{
  --primary:#6A3DE8;
  --primary-700:#5527D6;
  --primary-50:#F1ECFF;
  --accent:#C6F24E;
  --warm:#FF7A45;
  --bg:#F7F5FF;
  --surface:#FFFFFF;
  --surface-2:#EFEBFB;
  --dark:#150F2E;
  --dark-sub:#B9B3D6;
  --ink:#14102B;
  --ink-2:#4A4560;
  --ink-3:#7A7396;
  --line:#E6E1F5;
  --line-strong:#CBBFF2;
  --ok:#17B26A;
  --ok-soft:#E7F8F0;
  --warn:#F5A524;
  --warn-soft:#FEF4E3;
  --err:#E5484D;
  --err-soft:#FDECEC;
  --r-xs:10px;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(20,16,43,.06);
  --sh-md:0 8px 24px -10px rgba(20,16,43,.18);
  --sh-lg:0 20px 48px -18px rgba(20,16,43,.28);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:20px; --sp-6:24px;
  --sp-7:32px; --sp-8:40px; --sp-9:48px; --sp-10:64px; --sp-11:96px; --sp-12:128px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  text-align:left;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block;background:linear-gradient(135deg,#F1ECFF 0%,#EFEBFB 55%,#E4F9B0 100%);}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--primary-700);}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
::selection{background:var(--accent);color:var(--ink);}

/* 容器 */
.container{width:100%;max-width:1200px;margin:0 auto;padding-inline:24px;}
.container-wide{max-width:1360px;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,255,.9);
  backdrop-filter:saturate(150%) blur(8px);
  -webkit-backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px -16px rgba(20,16,43,.35);
  background:rgba(247,245,255,.78);
}
.header-inner{height:64px;display:flex;align-items:center;gap:var(--sp-6);}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;
  display:grid;place-items:center;
  background:var(--primary);color:#fff;font-size:12px;font-weight:700;letter-spacing:.02em;
  box-shadow:var(--sh-sm);
}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:var(--sp-4);}
.nav-link{
  position:relative;font-size:14px;font-weight:500;color:var(--ink-2);
  padding:6px 0;white-space:nowrap;
}
.nav-link:hover{color:var(--primary);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);border-radius:var(--r-pill);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:var(--sp-4);}
.command-search{position:relative;display:flex;align-items:center;}
.command-search .search-icon{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  width:15px;height:15px;color:var(--ink-3);pointer-events:none;
}
.command-search input{
  width:240px;height:36px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--surface);
  padding:0 54px 0 34px;font-size:14px;color:var(--ink);
  transition:width .22s ease,border-color .18s ease,box-shadow .18s ease;
}
.command-search input::placeholder{color:var(--ink-3);}
.command-search input:focus{
  width:320px;border-color:var(--primary);outline:none;
  box-shadow:0 0 0 3px var(--primary-50);
}
.cmd-key{
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-size:11px;color:var(--ink-3);border:1px solid var(--line);
  border-radius:6px;padding:2px 6px;background:var(--surface-2);
  font-family:var(--font-num);letter-spacing:.02em;
}
.search-panel{
  position:absolute;top:46px;right:0;width:360px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-lg);
  padding:var(--sp-3);display:none;z-index:70;
}
.search-panel.is-open{display:block;}
.search-group{margin-bottom:var(--sp-3);}
.search-group:last-child{margin-bottom:0;}
.search-group-title{font-size:12px;color:var(--ink-3);padding:6px 8px;letter-spacing:.04em;}
.search-item{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);
  padding:9px 10px;border-radius:var(--r-sm);font-size:14px;color:var(--ink-2);
}
.search-item:hover{background:var(--primary-50);color:var(--primary);}
.search-empty{font-size:14px;color:var(--ink-2);padding:10px;text-align:center;}
.search-empty .btn{margin-top:var(--sp-3);}
.quick-link{font-size:14px;font-weight:500;color:var(--ink-2);white-space:nowrap;}
.quick-link:hover{color:var(--primary);}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;
}
.menu-toggle span{display:block;width:16px;height:1.6px;background:var(--ink);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--ink);
}
.menu-toggle span::before{top:-5px;}
.menu-toggle span::after{top:5px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .16s ease,background .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
}
.btn-sm{height:32px;padding:0 14px;font-size:13px;}
.btn-md{height:38px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--primary-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(1px);}
.btn-secondary{
  background:var(--surface);color:var(--primary);
  border:1px solid var(--line-strong);
}
.btn-secondary:hover{background:var(--primary-50);border-color:var(--primary);color:var(--primary-700);}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{background:#d3fa63;color:var(--ink);transform:translateY(-1px);}
.btn-ghost{height:auto;padding:0;color:var(--primary);font-weight:600;font-size:15px;}
.btn-ghost .arrow{transition:transform .18s ease;}
.btn-ghost:hover{color:var(--primary-700);text-decoration:underline;text-underline-offset:3px;}
.btn-ghost:hover .arrow{transform:translateX(3px);}
.btn[disabled],.btn.is-disabled{
  background:var(--line);color:#A9A2C4;cursor:not-allowed;box-shadow:none;transform:none;
}
.btn.is-loading{pointer-events:none;opacity:.85;}
.btn.is-loading::before{
  content:"";width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* 面包屑 */
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--ink-3);line-height:1.6;
  padding:var(--sp-5) 0 var(--sp-3);
  overflow-x:auto;white-space:nowrap;scrollbar-width:none;
}
.breadcrumb::-webkit-scrollbar{display:none;}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb .current{color:var(--primary);font-weight:600;}

/* 页头：通栏大图 */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--dark);
  color:#fff;
  padding:var(--sp-11) 0 var(--sp-11);
  border-bottom:1px solid rgba(198,242,78,.28);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.34;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.35;pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:700;
  letter-spacing:-.02em;color:#fff;max-width:880px;
}
.page-hero-desc{
  margin-top:var(--sp-6);
  max-width:720px;
  color:#DCD7F2;
  font-size:16px;line-height:1.85;
}
.page-hero-desc + .page-hero-desc{margin-top:var(--sp-4);}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:var(--sp-7);}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
  background:rgba(198,242,78,.14);color:var(--accent);
  border:1px solid rgba(198,242,78,.35);
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* 通用板块 */
.section{padding-block:var(--sp-11);}
.section-tight{padding-block:var(--sp-10);}
.section-head{margin-bottom:var(--sp-8);max-width:780px;}
.section-head.center{margin-inline:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);margin-bottom:var(--sp-3);
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--warm);border-radius:var(--r-pill);}
h2{
  font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;
  letter-spacing:-.01em;color:var(--ink);
}
h3{font-size:20px;line-height:1.45;font-weight:600;color:var(--ink);}
h4{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink);}
.section-sub{margin-top:var(--sp-4);color:var(--ink-2);font-size:16px;line-height:1.85;max-width:720px;}
.center .section-sub{margin-inline:auto;}

/* 概览图区 */
.figure-block{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:var(--sp-5);
  box-shadow:var(--sh-md);
}
.figure-media{
  width:100%;aspect-ratio:16/9;border-radius:var(--r-md);
  overflow:hidden;border:1px solid var(--line);
}
.figure-media img{width:100%;height:100%;object-fit:cover;}
.figure-caption{
  margin-top:var(--sp-4);
  font-size:13px;color:var(--ink-3);text-align:center;line-height:1.6;
}
.figure-split{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:var(--sp-8);align-items:center;
}
.figure-points{display:flex;flex-direction:column;gap:var(--sp-4);}
.figure-point{
  display:flex;gap:var(--sp-4);
  padding:var(--sp-4);
  border-radius:var(--r-md);
  background:var(--surface-2);
}
.figure-point .idx{
  font-family:var(--font-num);font-size:13px;font-weight:700;
  color:var(--primary);background:var(--primary-50);
  width:30px;height:30px;border-radius:8px;display:grid;place-items:center;flex:none;
}
.figure-point p{font-size:14px;color:var(--ink-2);line-height:1.7;margin-top:2px;}
.figure-point strong{font-size:15px;color:var(--ink);font-weight:600;}

/* 描边卡片栅格（本页主版式） */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.edge-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:var(--sp-7);
  transition:border-color .18s ease,background .18s ease,transform .18s ease;
}
.edge-card:hover{border-color:var(--line-strong);background:#FDFCFF;transform:translateY(-2px);}
.edge-card .card-icon{
  width:40px;height:40px;border-radius:var(--r-sm);
  display:grid;place-items:center;
  background:var(--primary-50);color:var(--primary);
  margin-bottom:var(--sp-5);
}
.edge-card .card-icon svg{width:20px;height:20px;}
.edge-card h3{margin-bottom:var(--sp-3);}
.edge-card p{font-size:15px;color:var(--ink-2);line-height:1.8;}
.edge-card p + p{margin-top:var(--sp-3);}
.card-step{
  font-family:var(--font-num);font-size:13px;font-weight:700;
  color:var(--warm);letter-spacing:.08em;margin-bottom:var(--sp-3);display:block;
}
.card-list{margin-top:var(--sp-4);display:flex;flex-direction:column;gap:8px;}
.card-list li{
  position:relative;padding-left:20px;font-size:14px;color:var(--ink-2);line-height:1.7;
}
.card-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:8px;height:8px;border-radius:2px;background:var(--primary-50);
  border:1px solid var(--line-strong);
}
.badge{
  display:inline-flex;align-items:center;
  height:22px;padding:0 10px;border-radius:var(--r-pill);
  font-size:11px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:var(--accent);color:var(--ink);}
.badge-primary{background:var(--primary-50);color:var(--primary);}
.badge-warm{background:#FFEDE5;color:#C4491A;}
.badge-ok{background:var(--ok-soft);color:var(--ok);}

/* 要点清单 */
.checklist-wrap{
  background:var(--surface-2);
  border-radius:var(--r-lg);
  padding:var(--sp-9);
  border:1px solid var(--line);
}
.checklist{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:var(--sp-4) var(--sp-8);margin-top:var(--sp-7);
}
.checklist li{
  display:flex;gap:10px;font-size:15px;color:var(--ink-2);line-height:1.7;
}
.checklist li svg{width:18px;height:18px;flex:none;margin-top:5px;color:var(--primary);}

/* 提示条 */
.notice{
  display:flex;gap:var(--sp-4);align-items:flex-start;
  border-radius:var(--r-md);padding:var(--sp-5) var(--sp-6);
  font-size:14px;line-height:1.75;
}
.notice svg{width:18px;height:18px;flex:none;margin-top:4px;}
.notice-ok{background:var(--ok-soft);color:#0C6B45;}
.notice-warn{background:var(--warn-soft);color:#8A5A05;}
.notice-err{background:var(--err-soft);color:#9B2226;}

/* 站内文字链 */
.link-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.link-card{
  display:block;padding:var(--sp-6);
  border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface);
  transition:border-color .18s ease,background .18s ease,transform .18s ease;
}
.link-card:hover{border-color:var(--primary);background:var(--primary-50);transform:translateY(-2px);}
.link-card .lc-label{font-size:12px;color:var(--ink-3);letter-spacing:.06em;}
.link-card .lc-title{
  margin-top:6px;font-size:16px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;gap:8px;
}
.link-card:hover .lc-title{color:var(--primary);}
.link-card .lc-desc{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.7;}

/* FAQ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-5);
  padding:var(--sp-6) var(--sp-4);
  font-size:16px;font-weight:600;color:var(--ink);
  transition:background .18s ease,color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:rgba(106,61,232,.04);}
.faq-icon{
  width:20px;height:20px;flex:none;position:relative;
  transition:transform .22s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-item[open] summary{background:rgba(106,61,232,.04);color:var(--primary);}
.faq-answer{
  padding:0 var(--sp-4) var(--sp-6);
  font-size:15px;line-height:1.85;color:var(--ink-2);
  max-width:760px;
  background:rgba(106,61,232,.04);
}

/* 结尾 CTA */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--dark);color:#fff;
  padding-block:var(--sp-11);
  text-align:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:20px 20px;opacity:.5;
}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;
  width:360px;height:360px;border-radius:50%;
  border:1px solid rgba(198,242,78,.35);
}
.cta-band .container{position:relative;z-index:2;}
.cta-inner{max-width:640px;margin:0 auto;}
.cta-band h2{color:#fff;}
.cta-band p{margin-top:var(--sp-4);color:var(--dark-sub);font-size:16px;}
.cta-actions{
  margin-top:var(--sp-8);display:flex;align-items:center;justify-content:center;
  gap:var(--sp-6);flex-wrap:wrap;
}
.cta-actions .link-light{color:var(--accent);font-size:15px;font-weight:600;}
.cta-actions .link-light:hover{color:#d3fa63;text-decoration:underline;text-underline-offset:3px;}

/* 页脚 */
.site-footer{background:var(--dark);color:var(--dark-sub);padding-block:var(--sp-10) var(--sp-6);}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.15fr;
  gap:var(--sp-8);padding-bottom:var(--sp-8);
  border-bottom:1px solid rgba(185,179,214,.18);
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;}
.footer-brand .brand-mark{background:var(--accent);color:var(--ink);}
.footer-desc{margin-top:var(--sp-4);font-size:14px;line-height:1.8;max-width:340px;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:var(--sp-4);}
.footer-link{display:block;font-size:14px;color:var(--dark-sub);padding:5px 0;line-height:1.6;}
.footer-link:hover{color:var(--accent);}
.footer-note{font-size:13px;color:var(--dark-sub);margin-top:var(--sp-3);line-height:1.7;}
.footer-bottom{
  padding-top:var(--sp-6);
  display:flex;justify-content:space-between;gap:var(--sp-4);flex-wrap:wrap;
  font-size:12px;color:#8F88B4;
}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:55;
  display:flex;flex-direction:column;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-btn{
  width:48px;height:48px;border-radius:var(--r-pill);
  display:grid;place-items:center;
  box-shadow:var(--sh-md);
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
}
.float-btn:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);}
.float-main{background:var(--primary);color:#fff;}
.float-main:hover{background:var(--primary-700);color:#fff;}
.float-top{background:var(--surface);border:1px solid var(--line);color:var(--ink-2);}
.float-btn svg{width:20px;height:20px;}
.mobile-cta{display:none;}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(21,15,46,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s;
  z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;
  background:var(--surface);z-index:90;
  transform:translateX(102%);transition:transform .28s ease;
  display:flex;flex-direction:column;
  padding:var(--sp-5) var(--sp-5) var(--sp-6);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-5);}
.drawer-title{font-size:16px;font-weight:700;color:var(--ink);}
.drawer-close{
  width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink-2);font-size:18px;
}
.drawer-search{
  height:40px;border-radius:var(--r-sm);border:1px solid var(--line);
  padding:0 14px;font-size:14px;width:100%;margin-bottom:var(--sp-4);
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;align-items:center;height:52px;
  font-size:15px;color:var(--ink-2);font-weight:500;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--primary);font-weight:600;}
.drawer-cta{margin-top:var(--sp-6);}
.drawer-cta .btn{width:100%;}

/* 响应式 */
@media (max-width:1279px){
  .figure-split{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:var(--sp-6);}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .menu-toggle{display:flex;}
  .command-search{display:none;}
  .quick-link{display:none;}
  .grid-2{grid-template-columns:1fr;}
  .link-cards{grid-template-columns:1fr 1fr;}
  .checklist{grid-template-columns:1fr;}
  .section{padding-block:72px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .container{padding-inline:16px;}
  .header-inner{height:56px;}
  .brand{font-size:16px;}
  .section,.section-tight{padding-block:56px;}
  .page-hero{padding:56px 0;}
  .figure-split{gap:var(--sp-6);}
  .link-cards{grid-template-columns:1fr;}
  .checklist-wrap{padding:var(--sp-7) var(--sp-5);}
  .edge-card{padding:var(--sp-6);}
  .cta-band{padding-block:56px;}
  .footer-grid{grid-template-columns:1fr;gap:var(--sp-5);}
  .footer-bottom{flex-direction:column;gap:8px;}
  .float-cta{display:none;}
  .mobile-cta{
    display:flex;align-items:center;gap:var(--sp-4);
    position:fixed;left:0;right:0;bottom:0;height:56px;z-index:70;
    background:var(--surface);border-top:1px solid var(--line);
    padding:0 16px;box-shadow:0 -6px 20px -14px rgba(20,16,43,.4);
  }
  .mobile-cta .btn{flex:1;}
  .mobile-cta .mobile-link{font-size:14px;font-weight:600;color:var(--primary);white-space:nowrap;}
  body{padding-bottom:72px;}
}
@media (max-width:520px){
  .hero-badges{gap:8px;}
  .cta-actions{flex-direction:column;gap:var(--sp-4);}
  .cta-actions .btn{width:100%;}
}
@media (max-width:380px){
  .brand span:last-child{font-size:15px;}
}