/* roulang page: index */
:root{
  --ink-900:#1E1830;
  --ink-600:#57506B;
  --ink-400:#8B849C;
  --brand-700:#3A2E6E;
  --brand-600:#4B3A8F;
  --brand-500:#6B55B8;
  --brand-100:#EDE8F8;
  --accent-500:#E8753C;
  --accent-400:#F2A05C;
  --mint-500:#2E9E86;
  --bg:#FAF7F3;
  --surface:#FFFFFF;
  --line:rgba(75,58,143,.12);
  --radius-lg:24px;
  --radius-md:16px;
  --shadow-card:0 1px 2px rgba(30,24,48,.04),0 8px 24px -12px rgba(30,24,48,.10);
  --shadow-hover:0 16px 40px -16px rgba(75,58,143,.28);
  --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;background:var(--bg);color:var(--ink-600);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1152px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* 跳过导航 */
.skip-link{
  position:absolute;left:16px;top:-60px;z-index:100;
  background:var(--brand-600);color:#fff;padding:10px 18px;border-radius:999px;
  font-size:14px;transition:top .2s var(--ease);
}
.skip-link:focus{top:14px}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(250,247,243,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px -20px rgba(30,24,48,.6)}
.nav-wrap{display:flex;align-items:center;gap:14px;min-height:72px;flex-wrap:nowrap}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:38px;height:38px;border-radius:12px;flex:none;
  background:linear-gradient(135deg,#4B3A8F 0%,#7A5CC4 55%,#E8753C 100%);
  display:grid;place-items:center;color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:16px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
.logo-text span{font-size:11px;color:var(--ink-400);letter-spacing:.16em}
.chip-group{
  display:flex;align-items:center;gap:2px;background:#fff;
  border:1px solid var(--line);border-radius:999px;padding:4px;
}
.nav-chips{flex:1 1 auto;justify-content:center;min-width:0}
.chip{
  font-size:13px;font-weight:500;padding:7px 16px;border-radius:999px;
  color:var(--ink-600);white-space:nowrap;transition:background .18s var(--ease),color .18s var(--ease);
}
.chip:hover{background:var(--brand-100);color:var(--brand-700)}
.chip[aria-current="page"]{background:var(--brand-600);color:#fff;box-shadow:inset 0 1px 2px rgba(0,0,0,.18)}
.nav-actions{display:flex;align-items:center;gap:14px;flex:none}
.nav-link{font-size:13px;color:var(--ink-600);border-bottom:1px solid transparent;transition:color .18s,border-color .18s}
.nav-link:hover{color:var(--brand-600);border-bottom-color:var(--brand-600)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:11px 24px;font-size:15px;font-weight:600;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
  min-height:44px;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 6px 18px -10px rgba(232,117,60,.9)}
.btn-primary:hover{background:var(--accent-400);box-shadow:0 8px 24px -8px rgba(232,117,60,.6);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand-700);border:1px solid var(--brand-500)}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff}
.btn[disabled],.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none}
.nav-cta{padding:9px 20px;font-size:14px}
.show-sm{display:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:60;background:var(--bg);
  display:none;flex-direction:column;padding:20px;
}
.mobile-drawer.is-open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:20px;line-height:1;color:var(--ink-900)}
.drawer-links{display:flex;flex-direction:column;margin-top:8px}
.drawer-links a{font-size:16px;line-height:38px;padding:8px 0;border-bottom:1px solid var(--line);color:var(--ink-900)}
.drawer-links a[aria-current="page"]{color:var(--brand-600);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:18px}

/* Hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#241C3D,#3B2C63);color:#fff}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(120deg,rgba(36,28,61,.92) 0%,rgba(59,44,99,.78) 55%,rgba(122,92,196,.62) 100%),
    url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:26px 26px;opacity:.06;
}
.hero-inner{position:relative;z-index:2;padding:72px 0 80px}
@media(min-width:1024px){.hero-inner{padding:104px 0 112px}}
.hero-grid{display:grid;gap:48px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);
  font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.92);
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent-400);display:block}
.hero h1{
  margin-top:20px;font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.01em;color:#fff;
}
@media(min-width:768px){.hero h1{font-size:40px;line-height:1.2}}
.hero-sub{margin-top:18px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.82);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
@media(max-width:639px){.hero-cta .btn{width:100%}}
.hero-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.stat-badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);
}
.stat-badge i{width:6px;height:6px;border-radius:50%;background:var(--accent-400);display:block;flex:none}
.stat-badge b{font-size:15px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums}
.stat-badge span{font-size:12px;color:rgba(255,255,255,.74)}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:24px;
  border:8px solid rgba(255,255,255,.92);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.7);
}

/* 板块基础 */
.section{padding:72px 0}
@media(min-width:1024px){.section{padding:112px 0}}
.section-head{max-width:760px}
.section-title{
  position:relative;padding-left:16px;font-size:26px;line-height:1.3;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;
}
@media(min-width:768px){.section-title{font-size:32px;line-height:40px}}
.section-title::before{
  content:"";position:absolute;left:0;top:8px;width:4px;height:20px;border-radius:2px;
  background:linear-gradient(180deg,#7A5CC4,#E8753C);
}
.section-desc{margin-top:14px;font-size:15px;line-height:1.8;color:var(--ink-600)}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px}
.text-link{font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}
.text-link:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}

/* 卡片 */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.card-pad{padding:28px}
.icon-block{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;flex:none;
  background:linear-gradient(135deg,#4B3A8F 0%,#7A5CC4 55%,#E8753C 100%);
  color:#fff;font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.card-title{font-size:18px;line-height:1.5;font-weight:600;color:var(--ink-900);margin-top:18px}
.card-text{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-600)}
.cover-img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:calc(var(--radius-lg) - 1px) calc(var(--radius-lg) - 1px) 0 0;background:var(--brand-100)}

/* 卖点错落 */
.sell-grid{display:grid;gap:20px}
@media(min-width:1024px){.sell-grid{grid-template-columns:repeat(12,1fr)}}
.sell-main{overflow:hidden}
.sell-side{display:grid;gap:20px}
@media(min-width:1024px){
  .sell-main{grid-column:span 7}
  .sell-side{grid-column:span 5}
}
.badge-mint{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  background:rgba(46,158,134,.12);color:#1F7A66;font-size:12px;font-weight:600;
}
.badge-mint i{width:6px;height:6px;border-radius:50%;background:var(--mint-500);display:block}

/* 演示区 */
.demo-wrap{
  background:rgba(237,232,248,.55);border-radius:32px;padding:28px;
  border:1px solid var(--line);
}
@media(min-width:1024px){.demo-wrap{padding:44px}}
.demo-grid{display:grid;gap:32px;align-items:center}
@media(min-width:1024px){.demo-grid{grid-template-columns:.95fr 1.05fr;gap:48px}}
.step-item{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.step-item:last-child{border-bottom:none}
.step-num{
  width:34px;height:34px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:linear-gradient(135deg,#4B3A8F,#E8753C);color:#fff;font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.step-title{font-size:16px;font-weight:600;color:var(--ink-900)}
.step-text{margin-top:4px;font-size:14px;line-height:1.7;color:var(--ink-600)}
.demo-figure{background:#fff;border-radius:24px;padding:14px;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.demo-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px}
.dots{display:flex;gap:6px;justify-content:center;padding-top:14px}
.dots i{width:7px;height:7px;border-radius:50%;background:var(--brand-100);display:block}
.dots i:first-child{width:22px;border-radius:999px;background:var(--brand-500)}

/* 证据区 */
.metric-grid{display:grid;gap:20px;grid-template-columns:repeat(2,1fr)}
@media(min-width:1024px){.metric-grid{grid-template-columns:repeat(4,1fr)}}
.metric-card{position:relative;overflow:hidden;padding:26px 22px;border-radius:var(--radius-md)}
.metric-card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:3px;
  background:linear-gradient(90deg,#4B3A8F,#7A5CC4 45%,#E8753C);
}
.metric-num{font-size:28px;line-height:1.15;font-weight:700;color:var(--ink-900);font-variant-numeric:tabular-nums}
.metric-num em{font-style:normal;color:var(--mint-500)}
.metric-label{margin-top:6px;font-size:12px;color:var(--ink-400);letter-spacing:.04em}
.quote-grid{display:grid;gap:20px;margin-top:20px}
@media(min-width:768px){.quote-grid{grid-template-columns:repeat(2,1fr)}}
.quote-card{padding:30px 28px;border-radius:24px;position:relative}
.quote-mark{
  font-size:44px;line-height:1;font-weight:700;
  background:linear-gradient(120deg,#4B3A8F,#E8753C);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.quote-text{margin-top:8px;font-size:15px;line-height:1.85;color:var(--ink-600)}
.quote-from{margin-top:16px;font-size:13px;color:var(--ink-400)}

/* 最新信息 */
.news-grid{display:grid;gap:20px}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-main{overflow:hidden;display:flex;flex-direction:column}
@media(min-width:768px){.news-main{grid-column:span 2}}
@media(min-width:1024px){.news-main{grid-column:span 2}}
.news-main img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--brand-100)}
.news-main-body{padding:24px 26px 28px}
.news-list{display:flex;flex-direction:column;gap:0}
.news-item{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 18px;border-radius:14px;border-bottom:1px solid var(--line);
  transition:background .18s var(--ease);
}
.news-item:last-child{border-bottom:none}
.news-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;
  background:var(--accent-500);opacity:0;transition:opacity .18s var(--ease);
}
.news-item:hover{background:rgba(237,232,248,.55)}
.news-item:hover::before{opacity:1}
.news-item h3{font-size:15px;line-height:1.55;font-weight:600;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item time{font-size:12px;color:var(--ink-400);font-variant-numeric:tabular-nums;flex:none}
.chip-cat{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;
}
.news-title{font-size:20px;line-height:1.5;font-weight:600;color:var(--ink-900);margin-top:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-summary{margin-top:10px;font-size:14px;line-height:1.7;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:16px;font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums}
.empty-state{
  border:1px dashed rgba(75,58,143,.3);border-radius:16px;padding:44px 24px;text-align:center;
  color:var(--ink-400);font-size:14px;background:rgba(255,255,255,.6);
}
.empty-icon{
  width:44px;height:44px;border-radius:14px;margin:0 auto 14px;display:grid;place-items:center;
  background:var(--brand-100);color:var(--brand-600);font-size:18px;font-weight:700;
}

/* 方案 */
.plan-grid{display:grid;gap:20px}
@media(min-width:768px){.plan-grid{grid-template-columns:repeat(3,1fr)}}
.plan-card{position:relative;overflow:hidden;display:flex;flex-direction:column;padding:30px 26px}
.plan-card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:3px;
  background:linear-gradient(90deg,#4B3A8F,#7A5CC4 45%,#E8753C);opacity:.55;
}
.plan-card.is-featured{border-color:rgba(75,58,143,.3);box-shadow:0 20px 48px -22px rgba(75,58,143,.45);transform:translateY(-6px)}
.plan-card.is-featured::before{opacity:1}
.plan-card.is-featured:hover{transform:translateY(-10px)}
.plan-name{font-size:16px;font-weight:600;color:var(--ink-900)}
.plan-price{margin-top:14px;display:flex;align-items:flex-end;gap:6px}
.plan-price b{font-size:30px;line-height:1.1;font-weight:700;color:var(--ink-900);font-variant-numeric:tabular-nums}
.plan-price span{font-size:13px;color:var(--ink-400);padding-bottom:4px}
.plan-list{margin-top:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.plan-list li{display:flex;gap:9px;font-size:14px;line-height:1.7;color:var(--ink-600)}
.tick{width:16px;height:16px;flex:none;margin-top:5px;border-radius:50%;background:rgba(46,158,134,.14);display:grid;place-items:center}
.tick::after{content:"";width:7px;height:4px;border-left:2px solid var(--mint-500);border-bottom:2px solid var(--mint-500);transform:rotate(-45deg);margin-top:-2px}
.badge-recommend{
  position:absolute;right:20px;top:18px;padding:4px 12px;border-radius:999px;
  background:linear-gradient(120deg,#4B3A8F,#7A5CC4 45%,#E8753C);color:#fff;font-size:12px;font-weight:600;
}
.plan-card .btn{margin-top:24px;width:100%}

/* FAQ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:12px;
  box-shadow:0 1px 2px rgba(30,24,48,.04);overflow:hidden;
  transition:box-shadow .2s var(--ease);
}
.faq-item:hover{box-shadow:var(--shadow-card)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;width:20px;height:20px;flex:none;transition:transform .22s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);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-body{padding:0 22px 20px;font-size:14px;line-height:1.85;color:var(--ink-600)}

/* 结尾 CTA */
.cta-band{
  position:relative;overflow:hidden;border-radius:32px;
  background:linear-gradient(135deg,#241C3D,#3B2C63);color:#fff;
  padding:44px 28px;
}
@media(min-width:1024px){.cta-band{padding:64px 56px}}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:24px 24px;opacity:.06;
}
.cta-grid{position:relative;z-index:2;display:grid;gap:32px;align-items:center}
@media(min-width:1024px){.cta-grid{grid-template-columns:1.15fr .85fr;gap:48px}}
.cta-band h2{font-size:26px;line-height:1.35;font-weight:700;color:#fff;letter-spacing:-.01em}
@media(min-width:768px){.cta-band h2{font-size:32px;line-height:1.3}}
.cta-band p{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.82)}
.cta-band img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:20px;border:6px solid rgba(255,255,255,.14)}

/* 页脚 */
.site-footer{background:#F3EEE8;border-top:1px solid var(--line);padding:64px 0 96px;position:relative}
@media(min-width:1024px){.site-footer{padding:72px 0 40px}}
.footer-grid{display:grid;gap:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}}
.footer-brand p{margin-top:14px;font-size:13px;line-height:1.8;color:var(--ink-400);max-width:260px}
.footer-title{font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13px;color:var(--ink-600);transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(75,58,143,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:var(--ink-400);
}
.footer-bottom span{font-variant-numeric:tabular-nums}
.footer-stars{
  position:absolute;inset:auto 0 0 0;height:120px;pointer-events:none;
  background-image:radial-gradient(rgba(75,58,143,.45) 1px,transparent 1px);
  background-size:22px 22px;opacity:.08;
}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:40;
  display:none;flex-direction:column;align-items:flex-end;gap:10px;
}
@media(min-width:1024px){
  .float-cta{display:flex;opacity:0;transform:translateY(12px);pointer-events:none;
    transition:opacity .24s var(--ease),transform .24s var(--ease)}
  .float-cta.is-visible{opacity:1;transform:none;pointer-events:auto}
}
.float-cta a.secondary{font-size:12px;color:var(--ink-400);background:rgba(255,255,255,.9);padding:6px 14px;border-radius:999px;border:1px solid var(--line)}
.float-cta a.secondary:hover{color:var(--brand-600)}
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:40;display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:rgba(255,255,255,.97);border-top:1px solid var(--line);
  padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  box-shadow:0 -8px 24px -18px rgba(30,24,48,.6);
  min-height:56px;
}
@media(min-width:1024px){.mobile-bar{display:none}}
.mobile-bar span{font-size:12px;color:var(--ink-600);line-height:1.4}
.mobile-bar .btn{padding:9px 18px;font-size:14px;min-height:40px}

/* 响应式导航 */
@media(max-width:1023px){
  .nav-wrap{flex-wrap:wrap;padding:12px 0;gap:10px}
  .nav-chips{
    order:3;width:100%;flex:1 1 100%;justify-content:flex-start;
    overflow-x:auto;scrollbar-width:none;padding:4px;
  }
  .nav-chips::-webkit-scrollbar{display:none}
  .nav-link{display:none}
  .nav-toggle{display:flex}
  .nav-actions{margin-left:auto}
  .hide-sm{display:none}
  .show-sm{display:inline}
  .logo-text b{font-size:15px}
}
@media(max-width:520px){
  .logo-mark{width:34px;height:34px;font-size:14px;border-radius:10px}
  .logo-text b{font-size:14px}
  .logo-text span{font-size:10px;letter-spacing:.12em}
  .nav-cta{padding:8px 14px;font-size:13px}
  .hero-stats{gap:8px}
  .stat-badge{padding:6px 12px}
  .metric-num{font-size:24px}
  .card-pad{padding:22px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --ink-900:#1E1830;
  --ink-600:#57506B;
  --ink-400:#8B849C;
  --brand-700:#3A2E6E;
  --brand-600:#4B3A8F;
  --brand-500:#6B55B8;
  --brand-100:#EDE8F8;
  --accent-500:#E8753C;
  --accent-400:#F2A05C;
  --mint-500:#2E9E86;
  --bg:#FAF7F3;
  --surface:#FFFFFF;
  --line:rgba(75,58,143,.12);
  --dark-grad:linear-gradient(135deg,#241C3D 0%,#3B2C63 100%);
  --main-grad:linear-gradient(120deg,#4B3A8F 0%,#7A5CC4 45%,#E8753C 100%);
  --shadow-sm:0 1px 2px rgba(30,24,48,.04),0 8px 24px -12px rgba(30,24,48,.10);
  --shadow-lg:0 16px 40px -16px rgba(75,58,143,.28);
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:14px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}

.container{
  width:100%;
  max-width:1152px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){ .container{padding-left:32px;padding-right:32px} }

.skip-link{
  position:absolute;left:16px;top:-64px;z-index:120;
  background:var(--brand-600);color:#fff;
  padding:10px 18px;border-radius:999px;font-size:14px;
  transition:top .2s ease;
}
.skip-link:focus{top:14px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(250,247,243,.92);
  border-bottom:1px solid transparent;
  transition:box-shadow .24s ease,border-color .24s ease,background .24s ease;
}
.site-header.is-scrolled{
  background:rgba(250,247,243,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px -24px rgba(30,24,48,.5);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:76px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--main-grad);
  color:#fff;font-size:18px;font-weight:700;
  box-shadow:0 8px 20px -12px rgba(107,85,184,.9);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:16px;font-weight:700;color:var(--ink-900);letter-spacing:.01em}
.logo-text span{font-size:11px;color:var(--ink-400);letter-spacing:.14em}

.chip-group{
  display:flex;align-items:center;gap:2px;
  background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:4px;
  box-shadow:var(--shadow-sm);
}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  padding:8px 16px;border-radius:999px;
  font-size:13px;font-weight:500;color:var(--ink-600);
  white-space:nowrap;transition:background .18s ease,color .18s ease,box-shadow .18s ease;
  min-height:36px;
}
.chip:hover{background:var(--brand-100);color:var(--brand-700)}
.chip[aria-current="page"]{
  background:var(--brand-600);color:#fff;
  box-shadow:inset 0 1px 2px rgba(0,0,0,.16);
}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.header-link{
  font-size:13px;color:var(--ink-600);position:relative;
  transition:color .18s ease;
}
.header-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.header-link:hover{color:var(--brand-600)}
.header-link:hover::after{transform:scaleX(1)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;font-size:15px;
  padding:12px 24px;min-height:48px;
  transition:background .2s cubic-bezier(.2,.7,.3,1),color .2s,box-shadow .2s,transform .2s,border-color .2s;
}
.btn-primary{
  background:var(--accent-500);color:#fff;
  box-shadow:0 10px 24px -14px rgba(232,117,60,.9);
}
.btn-primary:hover{background:var(--accent-400);box-shadow:0 8px 24px -8px rgba(232,117,60,.6);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);background:#D9632C}
.btn-ghost{
  background:#fff;color:var(--brand-700);
  border:1px solid var(--brand-500);
}
.btn-ghost:hover{background:var(--brand-100)}
.btn-sm{padding:9px 18px;min-height:40px;font-size:14px}
.btn-block{width:100%}

.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;
}
.menu-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);
  position:relative;
}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink-900);
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:12px 20px 24px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:block;line-height:38px;font-size:15px;color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a:last-of-type{border-bottom:0}
.mobile-drawer a[aria-current="page"]{color:var(--brand-600);font-weight:600}
.mobile-drawer .btn{margin-top:14px}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,var(--brand-100) 0%,#F4EFFB 42%,var(--bg) 100%);
  padding:56px 0 64px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(75,58,143,.16) 1px,transparent 1px);
  background-size:26px 26px;opacity:.35;
  mask-image:linear-gradient(120deg,rgba(0,0,0,.7),transparent 62%);
  -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.7),transparent 62%);
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;gap:36px;align-items:center}
@media (min-width:1024px){ .hero-grid{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px} }
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:18px}
.breadcrumb a{transition:color .18s ease}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:rgba(139,132,156,.7)}
.breadcrumb .current{color:var(--ink-400)}
.hero-title{
  font-size:28px;line-height:1.32;font-weight:700;letter-spacing:-.01em;
  color:var(--ink-900);
}
@media (min-width:768px){ .hero-title{font-size:40px;line-height:1.24} }
.hero-lead{margin-top:18px;font-size:16px;line-height:1.85;color:var(--ink-600);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-actions .btn{flex:1 1 180px}
@media (min-width:640px){ .hero-actions .btn{flex:0 0 auto} }
.hero-note{margin-top:16px;font-size:13px;color:var(--ink-400)}

.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius-lg);
  border:6px solid #fff;
  box-shadow:0 24px 48px -28px rgba(58,46,110,.55);
  clip-path:polygon(10% 0,100% 0,100% 100%,0 100%);
}
.hero-figure figcaption{
  position:absolute;left:8px;bottom:-16px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:8px 18px;font-size:12px;color:var(--ink-600);
  box-shadow:var(--shadow-sm);
}

/* ---------- filter row + stats ---------- */
.filter-row{
  display:flex;gap:8px;flex-wrap:nowrap;overflow-x:auto;
  padding:6px 2px 2px;
  scrollbar-width:none;
}
.filter-row::-webkit-scrollbar{display:none}
.filter-chip{
  display:inline-flex;align-items:center;
  padding:9px 18px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--ink-600);white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.filter-chip.is-active{background:var(--brand-600);border-color:var(--brand-600);color:#fff}
.filter-chip:hover{background:var(--brand-100);color:var(--brand-700)}
.filter-chip.is-active:hover{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}

.stat-strip{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;
  margin-top:22px;
}
@media (min-width:768px){ .stat-strip{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px} }
.mini-badge{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:14px 16px;box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;gap:2px;
  position:relative;overflow:hidden;
}
.mini-badge::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--main-grad);
}
.mini-badge b{
  font-size:20px;font-weight:700;color:var(--brand-700);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
  font-family:"HarmonyOS Sans SC","PingFang SC",system-ui,sans-serif;
}
.mini-badge span{font-size:12px;color:var(--ink-400)}

/* ---------- sections ---------- */
.section{padding:56px 0}
@media (min-width:1024px){ .section{padding:88px 0} }
.section-head{max-width:720px;margin-bottom:32px}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--brand-600);
  text-transform:uppercase;margin-bottom:12px;
}
.section-eyebrow::before{
  content:"";width:20px;height:4px;border-radius:2px;background:var(--main-grad);
}
.section-title{
  font-size:24px;line-height:1.35;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;
  position:relative;padding-left:14px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:2px;
  background:var(--main-grad);
}
@media (min-width:768px){ .section-title{font-size:32px;line-height:1.3} }
.section-desc{margin-top:14px;font-size:15px;line-height:1.85;color:var(--ink-600)}

/* ---------- function grid ---------- */
.func-grid{display:grid;gap:20px}
@media (min-width:768px){ .func-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px} }
.func-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease,border-color .2s ease;
}
.func-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(75,58,143,.22)}
.func-card figure{position:relative;overflow:hidden;background:var(--brand-100)}
.func-card img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  transition:transform .4s cubic-bezier(.2,.7,.3,1);
}
.func-card:hover img{transform:scale(1.04)}
.func-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  align-self:flex-start;
  padding:4px 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:12px;font-weight:500;
}
.tag-mint{background:rgba(46,158,134,.12);color:#1F7A67}
.func-body h3{font-size:19px;line-height:1.4;font-weight:600;color:var(--ink-900)}
.func-body p{font-size:14px;line-height:1.8;color:var(--ink-600)}
.arrow-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-600);
  transition:gap .2s ease,color .2s ease;
}
.arrow-link::after{content:"→";transition:transform .2s ease}
.arrow-link:hover{color:var(--brand-700);gap:10px}

/* ---------- maintain band ---------- */
.maintain{
  background:rgba(237,232,248,.55);
  border:1px solid var(--line);
  border-radius:32px;
  padding:32px 24px;
  display:grid;gap:30px;
}
@media (min-width:1024px){
  .maintain{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);padding:48px;gap:48px;align-items:center}
}
.maintain h2{
  font-size:24px;line-height:1.35;font-weight:700;color:var(--ink-900);
}
@media (min-width:768px){ .maintain h2{font-size:30px} }
.maintain-list{margin-top:22px;display:flex;flex-direction:column;gap:16px}
.maintain-list li{display:flex;gap:12px;font-size:14px;line-height:1.8;color:var(--ink-600)}
.dot-num{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;font-weight:700;color:#fff;
  background:var(--main-grad);font-variant-numeric:tabular-nums;
}
.maintain-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:18px;box-shadow:var(--shadow-sm);
}
.maintain-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-md);background:var(--brand-100)}
.maintain-card ul{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.maintain-card li{
  display:flex;align-items:flex-start;gap:8px;
  font-size:13px;line-height:1.7;color:var(--ink-600);
}
.check{
  flex-shrink:0;width:16px;height:16px;margin-top:4px;border-radius:50%;
  background:rgba(46,158,134,.14);color:var(--mint-500);
  display:grid;place-items:center;font-size:10px;font-weight:700;
}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  margin-bottom:12px;box-shadow:var(--shadow-sm);overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{border-color:rgba(75,58,143,.22);box-shadow:0 12px 30px -20px rgba(75,58,143,.5)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;
  color:var(--brand-600);font-size:15px;line-height:1;
  transition:transform .22s ease,background .22s ease,color .22s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--brand-600);color:#fff;border-color:var(--brand-600)}
.faq-body{padding:0 22px 20px;font-size:14px;line-height:1.85;color:var(--ink-600)}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--dark-grad);
  border-radius:32px;
  padding:36px 24px;
  display:grid;gap:26px;
  color:#fff;
}
@media (min-width:1024px){
  .cta-band{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);padding:56px;align-items:center;gap:48px}
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px),
                   radial-gradient(rgba(255,255,255,.32) 1px,transparent 1px);
  background-size:88px 88px,132px 132px;
  background-position:0 0,44px 58px;
  opacity:.22;
}
.cta-inner{position:relative;z-index:2}
.cta-band h2{font-size:24px;line-height:1.35;font-weight:700}
@media (min-width:768px){ .cta-band h2{font-size:32px} }
.cta-band p{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.78);max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.cta-actions .btn{flex:1 1 180px}
@media (min-width:640px){ .cta-actions .btn{flex:0 0 auto} }
.btn-outline-light{
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);
}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff}
.cta-figure{position:relative;z-index:2}
.cta-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.16);
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--dark-grad);
  color:rgba(255,255,255,.72);
  padding:56px 0 24px;
  margin-top:56px;
}
@media (min-width:1024px){ .site-footer{padding:72px 0 28px;margin-top:88px} }
.footer-stars{
  position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:34px 34px;opacity:.08;
  mask-image:linear-gradient(180deg,transparent,#000 60%);
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 60%);
}
.site-footer .container{position:relative;z-index:2}
.footer-grid{display:grid;gap:32px}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px} }
.footer-brand .logo-mark{box-shadow:0 8px 20px -12px rgba(232,117,60,.8)}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text span{color:rgba(255,255,255,.55)}
.footer-brand p{
  margin-top:16px;font-size:13px;line-height:1.85;
  color:rgba(255,255,255,.66);max-width:260px;
}
.footer-title{
  font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:13px;color:rgba(255,255,255,.66);
  transition:color .18s ease,transform .18s ease;
  width:fit-content;
}
.footer-links a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:rgba(255,255,255,.46);
}

/* ---------- responsive nav ---------- */
@media (max-width:1023px){
  .nav-chips{display:none}
  .header-link{display:none}
  .menu-toggle{display:inline-flex}
  .header-actions .btn-sm{display:none}
  .header-inner{min-height:68px}
}
@media (max-width:1023px){
  .nav-chips{
    display:flex;overflow-x:auto;scrollbar-width:none;
    max-width:100%;
  }
  .nav-chips::-webkit-scrollbar{display:none}
}

/* roulang page: article */
:root{
  --ink-900:#1E1830;
  --ink-600:#57506B;
  --ink-400:#8B849C;
  --brand-700:#3A2E6E;
  --brand-600:#4B3A8F;
  --brand-500:#6B55B8;
  --brand-100:#EDE8F8;
  --accent-500:#E8753C;
  --accent-400:#F2A05C;
  --mint-500:#2E9E86;
  --bg:#FAF7F3;
  --surface:#FFFFFF;
  --line:rgba(75,58,143,.12);
  --grad:linear-gradient(120deg,#4B3A8F 0%,#7A5CC4 45%,#E8753C 100%);
  --dark:linear-gradient(135deg,#241C3D,#3B2C63);
  --shadow-sm:0 1px 2px rgba(30,24,48,.04),0 8px 24px -12px rgba(30,24,48,.10);
  --shadow-lg:0 16px 40px -16px rgba(75,58,143,.28);
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:14px;
  --pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink-600);font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(232,117,60,.22);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:8px}

.container{width:100%;max-width:1152px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px}}

.skip-link{position:absolute;left:16px;top:-70px;z-index:120;background:var(--brand-600);color:#fff;padding:10px 20px;border-radius:var(--pill);font-size:14px;transition:top .22s var(--ease)}
.skip-link:focus{top:12px}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,247,243,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 26px -22px rgba(30,24,48,.6)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700;font-size:17px;box-shadow:0 8px 20px -12px rgba(75,58,143,.9)}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:16px;font-weight:700;color:var(--ink-900);letter-spacing:.01em}
.logo-text span{font-size:11px;color:var(--ink-400);letter-spacing:.1em}
.chip-group{display:flex;align-items:center;gap:2px;padding:4px;background:var(--surface);border:1px solid var(--line);border-radius:var(--pill);box-shadow:var(--shadow-sm)}
.chip{display:inline-flex;align-items:center;padding:8px 16px;border-radius:var(--pill);font-size:13px;font-weight:500;color:var(--ink-600);white-space:nowrap;transition:background .18s var(--ease),color .18s var(--ease)}
.chip:hover{background:var(--brand-100);color:var(--brand-700)}
.chip[aria-current="page"]{background:var(--brand-600);color:#fff;box-shadow:inset 0 1px 2px rgba(0,0,0,.18)}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--pill);border:1px solid transparent;font-weight:600;font-size:15px;line-height:1.2;padding:13px 26px;min-height:44px;transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 10px 22px -14px rgba(232,117,60,.95)}
.btn-primary:hover{background:var(--accent-400);transform:translateY(-2px);box-shadow:0 14px 30px -12px rgba(232,117,60,.7)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--brand-700);border-color:var(--brand-500)}
.btn-outline:hover{background:var(--brand-100);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:13.5px;min-height:38px}
.text-link{font-size:13.5px;font-weight:500;color:var(--brand-600);border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.text-link:hover{color:var(--brand-700);border-bottom-color:currentColor}
.menu-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .2s var(--ease)}
.mobile-drawer{position:fixed;inset:0;z-index:90;background:#fff;padding:20px 20px 40px;overflow-y:auto;transform:translateY(-10px);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s}
.mobile-drawer.is-open{transform:none;opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;font-size:17px;color:var(--ink-900)}
.drawer-nav{display:flex;flex-direction:column;padding-top:10px}
.drawer-link{display:block;padding:16px 4px;font-size:15px;font-weight:500;color:var(--ink-900);border-bottom:1px solid var(--line)}
.drawer-link:hover{color:var(--brand-600)}
.drawer-cta{margin-top:26px;width:100%}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-400);padding-top:22px}
.breadcrumb a{color:var(--ink-400);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--brand-600)}
.crumb-sep{color:rgba(139,132,156,.7)}
.crumb-current{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom;color:var(--ink-400)}
@media (min-width:768px){.crumb-current{max-width:520px}}

/* ============ 文章主体 ============ */
.article-wrap{max-width:800px;margin:0 auto;padding-top:28px;padding-bottom:8px}
.chip-tag{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:var(--pill);background:var(--brand-100);color:var(--brand-700);font-size:12.5px;font-weight:600;letter-spacing:.02em}
.article-title{font-size:28px;line-height:1.36;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;margin-top:16px}
@media (min-width:768px){.article-title{font-size:40px;line-height:1.24}}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:18px;font-size:13px;color:var(--ink-400);padding-bottom:24px;border-bottom:1px solid var(--line)}
.meta-sep{width:1px;height:12px;background:var(--line);display:inline-block}

.article-body{padding-top:34px;font-size:16px;line-height:1.95;color:var(--ink-600);word-break:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.25em}
.article-body h2{font-size:24px;line-height:1.42;font-weight:700;color:var(--ink-900);margin:44px 0 18px;padding-left:16px;position:relative;letter-spacing:-.005em}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--grad)}
.article-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-900);margin:32px 0 14px}
.article-body h4{font-size:16.5px;font-weight:600;color:var(--ink-900);margin:24px 0 10px}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(75,58,143,.32);transition:color .18s var(--ease),border-color .18s var(--ease)}
.article-body a:hover{color:var(--accent-500);border-bottom-color:var(--accent-500)}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.4em}
.article-body li{margin:.42em 0}
.article-body ul li::marker{color:var(--accent-500)}
.article-body ol li::marker{color:var(--accent-500);font-weight:600}
.article-body blockquote{margin:28px 0;padding:18px 22px;background:rgba(237,232,248,.6);border-left:3px solid var(--accent-500);border-radius:12px;color:var(--ink-600)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);border:1px solid var(--line);margin:26px 0;width:100%;height:auto}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:14.5px;line-height:1.7}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
.article-body th{background:rgba(237,232,248,.55);color:var(--ink-900);font-weight:600}
.article-body tbody tr:nth-child(even) td{background:rgba(237,232,248,.22)}
.article-body pre{background:#241C3D;color:#EDE8F8;padding:18px 20px;border-radius:var(--r-sm);overflow-x:auto;font-size:13.5px;line-height:1.7;margin:24px 0}
.article-body code{background:rgba(237,232,248,.85);color:var(--brand-700);padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:38px 0}
.article-body strong{color:var(--ink-900);font-weight:600}

/* ============ 相关推荐 ============ */
.related{margin-top:56px;padding-top:34px;border-top:1px solid var(--line)}
.related-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.related-title{font-size:19px;font-weight:700;color:var(--ink-900);display:flex;align-items:center;gap:10px}
.related-title::before{content:"";width:4px;height:18px;border-radius:3px;background:var(--grad);display:inline-block}
.related-item{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 18px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);box-shadow:var(--shadow-sm);margin-bottom:12px;position:relative;overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.related-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent-500);transform:scaleY(0);transform-origin:center;transition:transform .22s var(--ease)}
.related-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.related-item:hover::before{transform:scaleY(1)}
.related-item-title{font-size:15px;font-weight:600;color:var(--ink-900);line-height:1.6;padding-left:6px}
.related-item:hover .related-item-title{color:var(--brand-700)}
.related-item-tag{flex-shrink:0;font-size:12px;color:var(--brand-700);background:var(--brand-100);padding:4px 12px;border-radius:var(--pill);font-weight:500}

/* ============ 订阅卡 / 返回 ============ */
.article-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:32px}
.subscribe-card{margin-top:32px;border:1px solid transparent;border-radius:20px;padding:26px 24px;background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px}
.subscribe-card h3{font-size:17px;font-weight:700;color:var(--ink-900)}
.subscribe-card p{font-size:13.5px;line-height:1.8;color:var(--ink-400);margin-top:6px;max-width:460px}

/* ============ 空状态 ============ */
.empty-state{text-align:center;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--r-lg);background:var(--surface);margin-top:32px}
.empty-icon{width:56px;height:56px;border-radius:18px;background:var(--brand-100);color:var(--brand-600);display:grid;place-items:center;font-size:24px;margin:0 auto 18px}
.empty-state .article-title{font-size:26px;margin-top:0}
.empty-text{font-size:14.5px;line-height:1.9;color:var(--ink-600);max-width:460px;margin:14px auto 26px}

/* ============ CTA 带 ============ */
.cta-section{padding:72px 0 0}
@media (min-width:1024px){.cta-section{padding:96px 0 0}}
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-xl);background:var(--dark);padding:44px 28px;color:#fff;box-shadow:0 30px 60px -40px rgba(36,28,61,.9)}
@media (min-width:768px){.cta-band{padding:56px 48px}}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.85) 1px,transparent 1px);background-size:24px 24px;opacity:.06;pointer-events:none}
.cta-inner{position:relative;z-index:1;display:flex;flex-direction:column;gap:24px}
@media (min-width:900px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px}}
.cta-band h2{font-size:25px;line-height:1.35;font-weight:700;letter-spacing:-.01em}
@media (min-width:768px){.cta-band h2{font-size:30px}}
.cta-band p{margin-top:12px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.72);max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0}
.cta-actions .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.7)}

/* ============ 页脚 ============ */
.site-footer{position:relative;margin-top:88px;background:#241C3D;color:#CFC8E2;padding:56px 0 26px;overflow:hidden}
.footer-stars{position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);background-size:26px 26px;opacity:.05;pointer-events:none}
.footer-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:28px}}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text span{color:rgba(255,255,255,.55)}
.footer-brand p{margin-top:14px;font-size:13px;line-height:1.85;color:rgba(255,255,255,.6);max-width:260px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13px;color:rgba(255,255,255,.66);transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--accent-400)}
.footer-bottom{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;margin-top:42px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:12px;color:rgba(255,255,255,.48)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-chips{display:none}
  .header-text-link{display:none}
  .menu-toggle{display:flex}
}
@media (max-width:639px){
  .header-inner{min-height:64px}
  .header-actions{gap:10px}
  .header-actions .btn-primary{display:none}
  .logo-text b{font-size:15px}
  .article-wrap{padding-top:20px}
  .article-body{padding-top:26px;font-size:15.5px;line-height:1.9}
  .article-body h2{font-size:21px;margin-top:34px}
  .article-body h3{font-size:17.5px}
  .related-item{flex-direction:column;align-items:flex-start;gap:10px}
  .cta-band{padding:36px 22px;border-radius:24px}
  .site-footer{margin-top:64px;padding-top:44px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --ink-900:#1E1830;
  --ink-600:#57506B;
  --ink-400:#8B849C;
  --brand-700:#3A2E6E;
  --brand-600:#4B3A8F;
  --brand-500:#6B55B8;
  --brand-100:#EDE8F8;
  --accent-500:#E8753C;
  --accent-400:#F2A05C;
  --mint-500:#2E9E86;
  --bg:#FAF7F3;
  --surface:#FFFFFF;
  --line:rgba(75,58,143,.12);
  --grad:linear-gradient(120deg,#4B3A8F 0%,#7A5CC4 45%,#E8753C 100%);
  --grad-dark:linear-gradient(135deg,#241C3D,#3B2C63);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:14px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(30,24,48,.04),0 8px 24px -12px rgba(30,24,48,.10);
  --sh-hover:0 16px 40px -16px rgba(75,58,143,.28);
  --tr:200ms cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink-600);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px}
.container{width:100%;max-width:1152px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:16px;top:-60px;z-index:99;background:var(--brand-600);color:#fff;padding:10px 18px;border-radius:var(--r-pill);font-size:14px;transition:top var(--tr)}
.skip-link:focus{top:12px}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,247,243,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color var(--tr),box-shadow var(--tr);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 26px -22px rgba(30,24,48,.65)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:74px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);
  color:#fff;display:grid;place-items:center;font-weight:700;font-size:18px;letter-spacing:.02em;
  box-shadow:0 8px 18px -10px rgba(75,58,143,.75);
}
.logo-text b{display:block;font-size:16px;line-height:1.25;color:var(--ink-900);font-weight:700;letter-spacing:.01em}
.logo-text span{display:block;font-size:11px;line-height:1.35;color:var(--ink-400);letter-spacing:.14em}
.chip-group{
  display:flex;align-items:center;gap:2px;padding:4px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);box-shadow:var(--sh-sm);
}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  padding:8px 16px;border-radius:var(--r-pill);
  font-size:13px;font-weight:500;color:var(--ink-600);white-space:nowrap;
  transition:background var(--tr),color var(--tr);
}
.chip:hover{background:var(--brand-100);color:var(--brand-700)}
.chip[aria-current="page"]{background:var(--brand-600);color:#fff;box-shadow:inset 0 1px 2px rgba(20,12,40,.22)}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.header-link{font-size:13px;color:var(--ink-600);transition:color var(--tr)}
.header-link:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.nav-chips{display:none}
@media(min-width:1024px){.nav-chips{display:flex}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);font-weight:600;line-height:1;
  transition:background var(--tr),box-shadow var(--tr),transform var(--tr),color var(--tr),border-color var(--tr);
  min-height:44px;padding:0 24px;font-size:15px;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 8px 20px -12px rgba(232,117,60,.9)}
.btn-primary:hover{background:var(--accent-400);box-shadow:0 10px 26px -8px rgba(232,117,60,.62);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand-700);border:1px solid var(--brand-500)}
.btn-ghost:hover{background:var(--brand-100)}
.btn-light{background:#fff;color:var(--brand-700);border:1px solid rgba(255,255,255,.5)}
.btn-light:hover{background:var(--brand-100)}
.btn-sm{min-height:40px;padding:0 18px;font-size:13px}
.btn:disabled{opacity:.4;cursor:not-allowed}

.nav-toggle{
  display:inline-grid;place-items:center;width:44px;height:44px;border-radius:14px;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-900);
}
@media(min-width:1024px){.nav-toggle{display:none}}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.chip-scroll-wrap{display:block;border-top:1px solid var(--line);background:rgba(255,255,255,.65)}
@media(min-width:1024px){.chip-scroll-wrap{display:none}}
.chip-scroll{display:flex;gap:8px;padding:10px 20px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.chip-scroll::-webkit-scrollbar{display:none}
.chip-scroll .chip{border:1px solid var(--line);background:#fff;flex-shrink:0}
.chip-scroll .chip[aria-current="page"]{background:var(--brand-600);border-color:var(--brand-600);color:#fff}

.mobile-drawer{
  position:fixed;inset:0;z-index:70;background:rgba(30,24,48,.42);
  opacity:0;pointer-events:none;transition:opacity var(--tr);
}
.mobile-drawer.is-open{opacity:1;pointer-events:auto}
.drawer-panel{
  position:absolute;right:0;top:0;height:100%;width:min(86vw,360px);
  background:var(--bg);border-left:1px solid var(--line);
  padding:22px 20px 32px;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform 240ms cubic-bezier(.2,.7,.3,1);
}
.mobile-drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:44px;height:44px;border-radius:14px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;font-size:20px;color:var(--ink-900);line-height:1}
.drawer-links{display:flex;flex-direction:column;margin-top:6px}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;font-size:15px;color:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.drawer-links a[aria-current="page"]{color:var(--brand-600);font-weight:600}
.drawer-cta{margin-top:auto;padding-top:24px}
.drawer-cta .btn{width:100%}

/* ===== 页头 ===== */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#EDE8F8 0%,#F6F0EA 52%,var(--bg) 100%);
  padding:52px 0 60px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(75,58,143,.16) 1px,transparent 1px);
  background-size:26px 26px;opacity:.35;pointer-events:none;
}
.hero-grid{position:relative;display:grid;gap:36px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.06fr .94fr;gap:52px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);
  font-size:12px;font-weight:600;color:var(--brand-600);letter-spacing:.04em;
}
.eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--accent-500);display:inline-block}
.page-hero h1{
  margin-top:18px;
  font-size:28px;line-height:1.32;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;
}
@media(min-width:768px){.page-hero h1{font-size:40px;line-height:1.2}}
.hero-lead{margin-top:16px;font-size:16px;line-height:1.8;color:var(--ink-600);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
@media(max-width:520px){.hero-actions .btn{width:100%}}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  clip-path:polygon(7% 0,100% 0,100% 100%,0 100%);
  box-shadow:0 24px 60px -32px rgba(58,46,110,.55);
  border:1px solid var(--line);background:var(--brand-100);
  aspect-ratio:4/3;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(75,58,143,.34),rgba(232,117,60,.12));
}
.hero-figure .fig-tag{
  position:absolute;left:24px;bottom:20px;z-index:2;
  background:rgba(255,255,255,.94);color:var(--brand-700);
  font-size:12px;font-weight:600;padding:7px 14px;border-radius:var(--r-pill);
  box-shadow:var(--sh-sm);
}

/* ===== 数据条 ===== */
.stat-strip{
  display:grid;grid-template-columns:repeat(2,1fr);gap:12px;
  margin-top:-32px;position:relative;z-index:5;
}
@media(min-width:768px){.stat-strip{grid-template-columns:repeat(4,1fr);gap:16px}}
.stat-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;box-shadow:var(--sh-sm);position:relative;overflow:hidden;
}
.stat-item::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad)}
.stat-item b{
  display:block;font-size:26px;line-height:1.2;font-weight:700;
  color:var(--brand-700);font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.stat-item:nth-child(2) b{color:var(--mint-500)}
.stat-item:nth-child(3) b{color:var(--accent-500)}
.stat-item span{display:block;margin-top:4px;font-size:12px;color:var(--ink-400);letter-spacing:.02em}

/* ===== 通用板块 ===== */
.section{padding:64px 0}
@media(min-width:768px){.section{padding:96px 0}}
.section-head{max-width:720px;margin-bottom:36px}
.section-head h2{
  position:relative;padding-left:16px;
  font-size:24px;line-height:1.35;font-weight:700;color:var(--ink-900);letter-spacing:-.005em;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--grad);
}
@media(min-width:768px){.section-head h2{font-size:32px;line-height:1.28}}
.section-head p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--ink-600)}

/* 筛选 chip 条 */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:8px;padding:8px;
  background:rgba(255,255,255,.72);border:1px solid var(--line);border-radius:var(--r-pill);
  margin-top:28px;width:fit-content;max-width:100%;
}
.filter-chip{
  padding:8px 16px;border-radius:var(--r-pill);font-size:13px;font-weight:500;
  color:var(--ink-600);background:transparent;border:1px solid transparent;
  transition:background var(--tr),color var(--tr),border-color var(--tr);
}
.filter-chip:hover{background:var(--brand-100);color:var(--brand-700)}
.filter-chip.is-active{background:#fff;color:var(--brand-700);border-color:var(--line);box-shadow:var(--sh-sm)}

/* ===== 时间轴 ===== */
.timeline-wrap{max-width:880px;margin:0 auto}
.timeline{position:relative;display:grid;gap:20px}
.timeline::before{
  content:"";position:absolute;left:19px;top:16px;bottom:16px;width:2px;
  background:linear-gradient(180deg,var(--brand-500),rgba(232,117,60,.45));border-radius:2px;
}
@media(max-width:520px){.timeline::before{left:15px}}
.tl-item{position:relative;padding-left:60px}
@media(max-width:520px){.tl-item{padding-left:46px}}
.tl-dot{
  position:absolute;left:0;top:10px;width:40px;height:40px;border-radius:50%;
  background:var(--grad);color:#fff;display:grid;place-items:center;
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:0 10px 22px -12px rgba(75,58,143,.9);border:3px solid var(--bg);
}
@media(max-width:520px){.tl-dot{width:32px;height:32px;font-size:13px;top:12px}}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;box-shadow:var(--sh-sm);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(75,58,143,.24)}
.tl-top{display:flex;flex-wrap:wrap;align-items:center;gap:10px;justify-content:space-between}
.tl-card h3{font-size:18px;line-height:1.4;font-weight:600;color:var(--ink-900)}
.tl-time{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:var(--mint-500);
  background:rgba(46,158,134,.10);border-radius:var(--r-pill);padding:4px 12px;
  font-variant-numeric:tabular-nums;white-space:nowrap;
}
.tl-card p{margin-top:10px;font-size:14px;line-height:1.85;color:var(--ink-600)}
.tl-card p strong{color:var(--ink-900);font-weight:600}
.tl-note{
  margin-top:12px;display:flex;gap:10px;align-items:flex-start;
  background:rgba(237,232,248,.55);border-radius:12px;padding:12px 14px;
  font-size:13px;line-height:1.75;color:var(--brand-700);
}
.tl-note svg{flex-shrink:0;margin-top:3px}
.tl-media{
  margin-top:14px;border-radius:12px;overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/9;background:var(--brand-100);
}
.tl-media img{width:100%;height:100%;object-fit:cover}
.tl-mark{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
  font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--ink-400);
  padding:6px 14px;border:1px dashed var(--line);border-radius:var(--r-pill);background:rgba(255,255,255,.6);
}
.tl-mark.end{margin-top:22px;margin-bottom:0;color:var(--accent-500);border-color:rgba(232,117,60,.4)}

/* ===== 准备清单 ===== */
.prep-grid{display:grid;gap:20px}
@media(min-width:768px){.prep-grid{grid-template-columns:repeat(3,1fr)}}
.prep-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-sm);
  transition:transform var(--tr),box-shadow var(--tr);
}
.prep-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.prep-icon{
  width:44px;height:44px;border-radius:14px;background:var(--grad);
  display:grid;place-items:center;color:#fff;margin-bottom:18px;
  box-shadow:0 10px 22px -14px rgba(75,58,143,.9);
}
.prep-card h3{font-size:18px;line-height:1.4;font-weight:600;color:var(--ink-900)}
.prep-card p{margin-top:10px;font-size:14px;line-height:1.85;color:var(--ink-600)}
.prep-list{margin-top:14px;display:grid;gap:8px}
.prep-list li{position:relative;padding-left:18px;font-size:13px;line-height:1.8;color:var(--ink-600)}
.prep-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;
  background:var(--accent-500);
}

/* ===== FAQ ===== */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-sm);overflow:hidden;transition:box-shadow var(--tr),border-color var(--tr);
}
.faq-item + .faq-item{margin-top:12px}
.faq-item:hover{border-color:rgba(75,58,143,.22);box-shadow:var(--sh-hover)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink-900);
  cursor:pointer;list-style:none;
}
.faq-q::-webkit-details-marker{display:none}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  background:var(--brand-100);color:var(--brand-600);
  display:grid;place-items:center;font-size:16px;line-height:1;
  transition:transform var(--tr),background var(--tr),color var(--tr);
}
details[open] .faq-icon{transform:rotate(45deg);background:var(--brand-600);color:#fff}
.faq-a{padding:0 20px 20px;font-size:14px;line-height:1.9;color:var(--ink-600)}

/* ===== CTA 带 ===== */
.cta-band{
  position:relative;overflow:hidden;border-radius:32px;
  background:var(--grad-dark);color:#fff;
  padding:44px 28px;
}
@media(min-width:768px){.cta-band{padding:56px 48px}}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:30px 30px;opacity:.16;
}
.cta-grid{position:relative;display:grid;gap:28px;align-items:center}
@media(min-width:768px){.cta-grid{grid-template-columns:1.15fr .85fr;gap:40px}}
.cta-band h2{font-size:24px;line-height:1.35;font-weight:700;color:#fff}
@media(min-width:768px){.cta-band h2{font-size:30px}}
.cta-band p{margin-top:12px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.82);max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cta-media{border-radius:20px;overflow:hidden;border:6px solid rgba(255,255,255,.14);aspect-ratio:16/10;background:rgba(255,255,255,.08)}
.cta-media img{width:100%;height:100%;object-fit:cover}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;overflow:hidden;margin-top:64px;
  background:#241C3D;color:rgba(255,255,255,.72);
  padding:56px 0 24px;
}
.footer-stars{
  position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:32px 32px;opacity:.10;
}
.site-footer .container{position:relative;z-index:1}
.footer-grid{display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}}
.site-footer .logo-mark{background:linear-gradient(120deg,#6B55B8,#E8753C)}
.site-footer .logo-text b{color:#fff}
.site-footer .logo-text span{color:rgba(255,255,255,.5)}
.footer-brand p{margin-top:16px;font-size:13px;line-height:1.9;color:rgba(255,255,255,.62);max-width:260px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13px;color:rgba(255,255,255,.66);transition:color var(--tr)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:rgba(255,255,255,.48);
}

/* ===== 移动端底部留白 ===== */
@media(max-width:1023px){.site-footer{padding-bottom:32px}}

/* roulang page: category3 */
:root{
    --ink-900:#1E1830;
    --ink-600:#57506B;
    --ink-400:#8B849C;
    --brand-700:#3A2E6E;
    --brand-600:#4B3A8F;
    --brand-500:#6B55B8;
    --brand-100:#EDE8F8;
    --accent-500:#E8753C;
    --accent-400:#F2A05C;
    --mint-500:#2E9E86;
    --bg:#FAF7F3;
    --surface:#FFFFFF;
    --line:rgba(75,58,143,.12);
    --radius-lg:24px;
    --radius-md:16px;
    --radius-sm:14px;
    --shadow-sm:0 1px 2px rgba(30,24,48,.04),0 8px 24px -12px rgba(30,24,48,.10);
    --shadow-hover:0 16px 40px -16px rgba(75,58,143,.28);
    --grad-main:linear-gradient(120deg,#4B3A8F 0%,#7A5CC4 45%,#E8753C 100%);
    --dark-grad:linear-gradient(135deg,#241C3D,#3B2C63);
    --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;
    background:var(--bg);
    color:var(--ink-600);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  h1,h2,h3,h4,p{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  [hidden]{display:none!important}
  :focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:1152px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 32px}}

  .skip-link{
    position:absolute;left:16px;top:-72px;z-index:120;
    display:inline-flex;align-items:center;height:44px;padding:0 20px;
    border-radius:999px;background:var(--brand-700);color:#fff;font-size:14px;
    transition:top .2s var(--ease);
  }
  .skip-link:focus{top:12px}

  /* ---------- 顶栏 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(250,247,243,.93);
    -webkit-backdrop-filter:blur(10px);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:72px;padding-top:10px;padding-bottom:10px;
  }
  .logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
  .logo-mark{
    width:38px;height:38px;border-radius:12px;background:var(--grad-main);
    color:#fff;display:grid;place-items:center;font-size:18px;font-weight:700;
    box-shadow:0 8px 18px -10px rgba(75,58,143,.9);
  }
  .logo-text{display:flex;flex-direction:column;line-height:1.15}
  .logo-text b{font-size:16px;font-weight:700;color:var(--ink-900);letter-spacing:.01em}
  .logo-text span{font-size:11px;color:var(--ink-400);letter-spacing:.16em}

  .chip-group{
    display:flex;gap:2px;padding:4px;border-radius:999px;
    background:var(--surface);border:1px solid var(--line);
  }
  .chip{
    display:inline-flex;align-items:center;height:36px;padding:0 16px;
    border-radius:999px;font-size:13px;font-weight:500;color:var(--ink-600);
    white-space:nowrap;transition:background .2s var(--ease),color .2s var(--ease);
  }
  .chip:hover{background:var(--brand-100);color:var(--brand-700)}
  .chip.is-active{background:var(--brand-600);color:#fff;box-shadow:inset 0 1px 3px rgba(0,0,0,.2)}

  .header-actions{display:flex;align-items:center;gap:12px}
  .link-quiet{font-size:14px;color:var(--ink-600);padding:8px 2px;white-space:nowrap;transition:color .2s}
  .link-quiet:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}

  .menu-btn{
    display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    background:var(--surface);flex-direction:column;align-items:center;justify-content:center;gap:5px;
    transition:background .2s;
  }
  .menu-btn:hover{background:var(--brand-100)}
  .menu-btn span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900)}

  @media (max-width:1023px){
    .nav-chips{display:none}
    .link-quiet{display:none}
    .menu-btn{display:flex}
  }
  @media (max-width:420px){
    .logo-text span{display:none}
    .header-actions .btn{padding-left:16px;padding-right:16px}
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:12px 24px;border-radius:999px;border:1px solid transparent;
    font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap;
    transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
  }
  .btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 8px 20px -14px rgba(232,117,60,.9)}
  .btn-primary:hover{background:var(--accent-400);box-shadow:0 8px 24px -8px rgba(232,117,60,.6);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(0);background:var(--accent-500)}
  .btn-ghost{background:var(--surface);color:var(--brand-700);border-color:var(--brand-500)}
  .btn-ghost:hover{background:var(--brand-100)}
  .btn-sm{min-height:44px;padding:10px 18px;font-size:14px}

  /* ---------- 抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:90;display:flex;justify-content:flex-end;
    background:rgba(30,24,48,.5);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  }
  .drawer-panel{
    width:min(344px,88vw);height:100%;background:var(--surface);padding:18px 20px 24px;
    display:flex;flex-direction:column;gap:6px;
    box-shadow:-24px 0 60px -30px rgba(30,24,48,.7);
    animation:slideIn .26s var(--ease);
  }
  @keyframes slideIn{from{transform:translateX(28px);opacity:.5}to{transform:none;opacity:1}}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
  .drawer-title{font-size:15px;font-weight:700;color:var(--ink-900)}
  .drawer-close{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    display:grid;place-items:center;font-size:22px;line-height:1;color:var(--ink-600);
  }
  .drawer-close:hover{background:var(--brand-100)}
  .drawer-links{display:flex;flex-direction:column}
  .drawer-links a{
    display:flex;align-items:center;min-height:52px;padding:0 4px;font-size:16px;
    color:var(--ink-900);border-bottom:1px solid var(--line);
  }
  .drawer-links a:hover{color:var(--brand-600)}
  .drawer-links a[aria-current="page"]{color:var(--brand-600);font-weight:600}
  .drawer-cta{margin-top:auto}

  /* ---------- 页头 ---------- */
  .page-hero{
    position:relative;overflow:hidden;padding:48px 0 44px;
    background:linear-gradient(180deg,#EDE8F8 0%,#F6F1FA 46%,var(--bg) 100%);
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:radial-gradient(rgba(75,58,143,.5) 1px,transparent 1px);
    background-size:22px 22px;opacity:.05;
  }
  .page-hero-grid{position:relative;display:grid;gap:32px;align-items:center}
  @media (min-width:900px){
    .page-hero{padding:64px 0 56px}
    .page-hero-grid{grid-template-columns:1.05fr .95fr;gap:52px}
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
    border-radius:999px;background:rgba(255,255,255,.85);border:1px solid var(--line);
    font-size:12px;letter-spacing:.14em;color:var(--brand-700);font-weight:600;
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500)}
  h1{
    margin-top:18px;
    font-size:28px;line-height:1.32;font-weight:700;letter-spacing:-.01em;color:var(--ink-900);
  }
  @media (min-width:768px){h1{font-size:38px;line-height:1.26}}
  @media (min-width:1024px){h1{font-size:42px;line-height:1.22}}
  .lede{margin-top:16px;max-width:34em;font-size:15px;line-height:1.85;color:var(--ink-600)}
  @media (min-width:768px){.lede{font-size:16px}}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  @media (max-width:520px){
    .hero-actions .btn{width:100%}
  }
  .page-hero-figure img{
    width:100%;aspect-ratio:4/3;object-fit:cover;
    border-radius:var(--radius-lg);
    border:1px solid rgba(255,255,255,.9);
    box-shadow:0 28px 56px -30px rgba(58,46,110,.7);
    clip-path:polygon(0 0,100% 0,100% 90%,12% 100%);
    background:var(--brand-100);
  }

  /* ---------- 通用板块 ---------- */
  .section{padding:52px 0}
  @media (min-width:768px){.section{padding:76px 0}}
  .section-tight{padding:24px 0 0}
  .section-head{margin-bottom:28px}
  @media (min-width:768px){.section-head{margin-bottom:36px}}
  .section-title{
    position:relative;padding-left:18px;
    font-size:24px;line-height:1.32;font-weight:700;color:var(--ink-900);
  }
  @media (min-width:768px){.section-title{font-size:30px}}
  .section-title::before{
    content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;
    background:var(--grad-main);
  }
  .section-sub{margin-top:10px;padding-left:18px;font-size:14px;color:var(--ink-400)}

  /* ---------- 筛选条 ---------- */
  .filter-bar{
    display:flex;flex-wrap:wrap;align-items:center;gap:14px;
    padding:16px 20px;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-md);box-shadow:var(--shadow-sm);
  }
  .filter-label{font-size:12px;letter-spacing:.12em;color:var(--ink-400);font-weight:600}
  .filter-chips{display:flex;flex-wrap:wrap;gap:8px}
  .filter-chip{
    min-height:38px;padding:7px 16px;border-radius:999px;font-size:13px;font-weight:500;
    color:var(--ink-600);background:var(--bg);border:1px solid var(--line);
    transition:all .2s var(--ease);
  }
  .filter-chip:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-100)}
  .filter-chip.is-active{background:var(--brand-600);color:#fff;border-color:var(--brand-600)}

  /* ---------- 数据条 ---------- */
  .stat-strip{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:16px}
  @media (min-width:768px){.stat-strip{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}}
  .stat-item{
    position:relative;overflow:hidden;display:flex;align-items:baseline;gap:10px;
    padding:16px 18px;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-md);box-shadow:var(--shadow-sm);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease);
  }
  .stat-item::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad-main)}
  .stat-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
  .stat-item b{
    font-size:24px;line-height:1;font-weight:700;color:var(--brand-700);
    font-variant-numeric:tabular-nums;font-feature-settings:"tnum";
  }
  .stat-item span{font-size:12px;color:var(--ink-400);line-height:1.4}

  /* ---------- 问答双列 ---------- */
  .qa-layout{display:grid;gap:22px}
  @media (min-width:900px){.qa-layout{grid-template-columns:380px minmax(0,1fr);gap:32px;align-items:start}}

  .qa-nav{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:18px;box-shadow:var(--shadow-sm);
  }
  @media (min-width:900px){.qa-nav{position:sticky;top:96px}}
  .qa-nav-title{
    font-size:12px;letter-spacing:.14em;font-weight:600;color:var(--ink-400);
    margin-bottom:14px;padding-left:2px;
  }
  .qa-list{display:flex;flex-direction:column;gap:8px}
  .qa-pill{
    width:100%;text-align:left;min-height:48px;padding:13px 15px;border-radius:var(--radius-sm);
    font-size:14px;line-height:1.5;color:var(--ink-600);
    background:var(--bg);border:1px solid var(--line);
    transition:all .2s var(--ease);
  }
  .qa-pill:hover{border-color:var(--brand-500);background:var(--brand-100);color:var(--brand-700)}
  .qa-pill.is-active{
    background:var(--brand-600);color:#fff;border-color:var(--brand-600);
    box-shadow:0 12px 26px -16px rgba(75,58,143,.95);
  }

  .qa-answer{
    display:none;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);
  }
  @media (min-width:768px){.qa-answer{padding:32px}}
  .qa-answer.is-active{display:block;animation:fadeUp .28s var(--ease)}
  @keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
  .qa-tag{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;letter-spacing:.04em;
  }
  .qa-answer h3{margin-top:14px;font-size:20px;line-height:1.45;font-weight:700;color:var(--ink-900)}
  @media (min-width:768px){.qa-answer h3{font-size:22px}}
  .qa-answer p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--ink-600)}
  .qa-points{margin-top:16px;display:flex;flex-direction:column;gap:10px}
  .qa-points li{
    position:relative;padding-left:20px;font-size:14px;line-height:1.8;color:var(--ink-600);
  }
  .qa-points li::before{
    content:"";position:absolute;left:2px;top:10px;width:7px;height:7px;border-radius:50%;
    background:var(--accent-500);
  }
  .qa-note{
    margin-top:20px;padding:14px 16px;border-radius:var(--radius-sm);
    background:rgba(237,232,248,.6);border-left:3px solid var(--accent-500);
    font-size:13px;line-height:1.8;color:var(--ink-600);
  }

  .support-card{
    margin-top:22px;border-radius:var(--radius-lg);padding:24px;
    background:linear-gradient(135deg,#F7F3FD 0%,#FDF3EC 100%);
    border:1px solid rgba(232,117,60,.24);
  }
  .support-card h3{font-size:18px;font-weight:700;color:var(--ink-900)}
  .support-card p{margin-top:10px;font-size:14px;line-height:1.85;color:var(--ink-600)}
  .support-card .btn{margin-top:16px}

  .qa-related{margin-top:18px;display:grid;gap:10px}
  @media (min-width:640px){.qa-related{grid-template-columns:repeat(2,minmax(0,1fr))}}
  .qa-related a{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    min-height:56px;padding:14px 18px;border-radius:var(--radius-md);
    background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);
    font-size:14px;font-weight:600;color:var(--ink-900);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .qa-related a:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(107,85,184,.4)}
  .qa-related a span{font-size:13px;color:var(--brand-600);font-weight:600}

  /* ---------- FAQ ---------- */
  .faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
  .faq-item{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
    box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow .2s var(--ease);
  }
  .faq-item:hover{box-shadow:var(--shadow-hover)}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:58px;padding:16px 20px;cursor:pointer;list-style:none;
    font-size:16px;font-weight:600;color:var(--ink-900);
  }
  @media (min-width:768px){.faq-item summary{padding:18px 24px}}
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";flex:0 0 auto;font-size:22px;line-height:1;color:var(--brand-500);
    transition:transform .22s var(--ease);
  }
  .faq-item[open] summary::after{transform:rotate(45deg)}
  .faq-item[open] summary{color:var(--brand-700)}
  .faq-body{padding:0 20px 20px;font-size:14px;line-height:1.9;color:var(--ink-600)}
  @media (min-width:768px){.faq-body{padding:0 24px 22px}}

  /* ---------- 结尾 CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;border-radius:28px;background:var(--dark-grad);
    color:#fff;padding:34px 24px;display:grid;gap:24px;
  }
  @media (min-width:900px){
    .cta-band{border-radius:32px;grid-template-columns:1.15fr .85fr;align-items:center;gap:40px;padding:52px 48px}
  }
  .cta-band::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:radial-gradient(rgba(255,255,255,.65) 1px,transparent 1px);
    background-size:24px 24px;opacity:.08;
  }
  .cta-copy{position:relative;z-index:1}
  .cta-copy h2{font-size:24px;line-height:1.36;font-weight:700;color:#fff}
  @media (min-width:768px){.cta-copy h2{font-size:30px}}
  .cta-copy p{margin-top:12px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.78)}
  .cta-copy .btn{margin-top:22px}
  .cta-figure{position:relative;z-index:1;display:none}
  @media (min-width:900px){.cta-figure{display:block}}
  .cta-figure img{
    width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:20px;
    border:1px solid rgba(255,255,255,.18);
    box-shadow:0 24px 48px -28px rgba(0,0,0,.9);
  }

  /* ---------- 页脚 ---------- */
  .site-footer{
    position:relative;overflow:hidden;margin-top:56px;
    background:#1E1830;color:rgba(255,255,255,.72);
    padding:52px 0 26px;
  }
  @media (min-width:768px){.site-footer{margin-top:80px;padding:60px 0 30px}}
  .footer-stars{
    position:absolute;inset:0;pointer-events:none;
    background-image:radial-gradient(rgba(255,255,255,.6) 1px,transparent 1px);
    background-size:26px 26px;opacity:.06;
  }
  .footer-grid{position:relative;display:grid;gap:32px;grid-template-columns:1fr}
  @media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}}
  .footer-brand p{margin-top:14px;font-size:13px;line-height:1.9;color:rgba(255,255,255,.62);max-width:24em}
  .site-footer .logo-text b{color:#fff}
  .site-footer .logo-text span{color:rgba(255,255,255,.5)}
  .footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
  .footer-links{display:flex;flex-direction:column;gap:10px;font-size:14px}
  .footer-links a{color:rgba(255,255,255,.7);transition:color .2s var(--ease)}
  .footer-links a:hover{color:#fff}
  .footer-bottom{
    position:relative;margin-top:36px;padding-top:20px;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:12px;color:rgba(255,255,255,.5);
  }