/* roulang page: index */
:root{
  --c-bg:#F7F5FF;
  --c-deep:#17102E;
  --c-deep-2:#221449;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEBFB;
  --c-line:#E3DDF6;
  --c-brand-700:#3B1FBF;
  --c-brand-600:#4E2AE0;
  --c-brand-500:#7A5AF8;
  --c-coral:#FF6B5A;
  --c-lime:#D8F24B;
  --c-cyan:#35D6C8;
  --c-ink:#17102E;
  --c-ink-2:#5A5478;
  --c-ink-3:#8C86A8;
  --grad-brand:linear-gradient(118deg,#4E2AE0 0%,#7A5AF8 48%,#FF6B5A 108%);
  --grad-soft:linear-gradient(118deg,#EFEBFB 0%,#FDF0EC 100%);
  --sh-2:0 10px 30px -14px rgba(46,26,120,.22);
  --sh-3:0 24px 60px -24px rgba(46,26,120,.35);
  --r-card:24px;
  --r-band:32px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:2px;border-radius:6px}

/* 容器与板块节奏 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:56px 0}
@media (min-width:768px){ .container{padding:0 24px} }
@media (min-width:1024px){ .container{padding:0 32px} .section{padding:96px 0} }

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.sec-title{font-size:clamp(23px,3vw,36px);line-height:1.25;font-weight:800;letter-spacing:-.01em}
.sec-desc{margin-top:10px;color:var(--c-ink-2);font-size:15.5px;max-width:640px}
.sec-link{font-size:15px;font-weight:600;color:var(--c-brand-600);display:inline-flex;align-items:center;gap:6px}
.sec-link:hover{color:var(--c-coral)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--c-brand-600);background:var(--c-surface-2);border-radius:999px;padding:6px 14px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1;padding:13px 26px;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:transform .22s ease-out,box-shadow .22s ease-out,background .22s ease-out,border-color .22s ease-out,filter .22s ease-out;white-space:nowrap}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-2)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--sh-3)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-secondary{background:#fff;color:var(--c-brand-600);border-color:var(--c-line);border-radius:14px}
.btn-secondary:hover{border-color:var(--c-brand-600);background:var(--c-surface-2);transform:translateY(-2px)}
.btn-nav{padding:11px 20px;font-size:14.5px}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;transition:background .25s ease-out,box-shadow .25s ease-out}
.site-header.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(14px);box-shadow:var(--sh-2)}
.nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:72px;gap:12px}
.nav-left{display:flex;align-items:center;gap:26px}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:22px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-ink);padding:6px 2px;transition:color .22s ease-out}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:3px;border-radius:3px;background:var(--grad-brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease-out}
.nav-link:hover{color:var(--c-brand-600)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--c-ink);white-space:nowrap;transition:color .25s ease-out}
.brand-mark{position:relative;width:30px;height:30px;border-radius:10px;background:var(--grad-brand);box-shadow:var(--sh-2);flex:none}
.brand-mark::after{content:"";position:absolute;inset:8px;border-radius:3px;background-image:radial-gradient(circle,#fff 1.2px,transparent 1.4px);background-size:5px 5px}
.site-header.header-on-dark:not(.scrolled) .nav-link,
.site-header.header-on-dark:not(.scrolled) .brand{color:#fff}
.site-header.header-on-dark:not(.scrolled) .nav-link:hover{color:var(--c-lime)}
.nav-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.08);color:#fff;cursor:pointer;transition:background .2s ease-out,border-color .2s ease-out}
.site-header.scrolled .nav-toggle{border-color:var(--c-line);background:#fff;color:var(--c-ink)}

.mobile-drawer{position:fixed;top:72px;left:0;right:0;bottom:0;z-index:55;display:none;flex-direction:column;gap:2px;padding:16px 20px 40px;background:#fff;overflow-y:auto;box-shadow:var(--sh-3)}
.mobile-drawer.open{display:flex}
.drawer-link{display:block;font-size:18px;font-weight:500;line-height:56px;color:var(--c-ink);border-bottom:1px solid var(--c-line)}
.drawer-link.active{color:var(--c-brand-600);font-weight:700}
.mobile-drawer .btn{margin-top:22px;width:100%}
.drawer-foot{margin-top:auto;padding-top:26px;font-size:13px;color:var(--c-ink-3)}
.drawer-foot strong{color:var(--c-ink);font-size:15px}

@media (max-width:1023px){
  .nav-left,.nav-right .nav-link,.nav-right .btn-nav{display:none}
  .nav-toggle{display:inline-flex}
  .nav-right{gap:10px}
  .brand{font-size:17.5px}
}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--c-deep);color:#fff;padding:64px 0 96px}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);background-size:72px 72px;pointer-events:none}
.hero::after{content:"";position:absolute;right:-120px;bottom:-180px;width:560px;height:560px;background:radial-gradient(circle,rgba(122,90,248,.55) 0%,rgba(255,107,90,.22) 45%,transparent 72%);pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
@media (min-width:1024px){
  .hero{padding:88px 0 128px}
  .hero-grid{grid-template-columns:1fr 1fr;gap:56px}
}
.hero h1{font-size:clamp(30px,5vw,54px);line-height:1.15;font-weight:800;letter-spacing:-.01em}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.78);max-width:520px}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.hero-trust{margin-top:30px;display:flex;flex-wrap:wrap;gap:10px 22px}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72)}
.hero-trust i{color:var(--c-cyan);font-size:13px}
.hero-media{position:relative;border-radius:28px;border:1px solid rgba(255,255,255,.18);overflow:hidden;box-shadow:0 30px 70px -30px rgba(0,0,0,.6)}
.hero-media img{width:100%;height:320px;object-fit:cover}
@media (min-width:1024px){ .hero-media img{height:420px} }
.hero-badge{position:absolute;top:18px;right:18px;background:var(--c-lime);color:var(--c-deep);font-size:13px;font-weight:700;padding:8px 15px;border-radius:999px;letter-spacing:.02em}

/* 悬浮数据徽章 */
.hero-badges-wrap{position:relative;z-index:6;margin-top:-52px}
.hero-badges{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media (min-width:1024px){ .hero-badges{grid-template-columns:repeat(4,1fr);gap:20px} }
.badge-card{background:#fff;border:1px solid var(--c-line);border-radius:20px;box-shadow:var(--sh-2);padding:18px 20px;transition:transform .24s ease-out,box-shadow .24s ease-out}
.badge-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.badge-num{font-size:26px;font-weight:800;line-height:1.1;color:var(--c-deep);letter-spacing:-.01em}
.badge-num em{font-style:normal;font-size:14px;font-weight:700;color:var(--c-brand-600);margin-left:2px}
.badge-txt{margin-top:6px;font-size:12.5px;color:var(--c-ink-2)}

/* 主张条 */
.claims{margin-top:64px;background:var(--c-surface-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:26px 0}
.claims-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 22px}
@media (min-width:1024px){ .claims-grid{grid-template-columns:repeat(4,1fr)} }
.claim{position:relative;font-size:14px;color:var(--c-ink-2);padding-left:16px}
.claim::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--grad-brand)}
.claim strong{color:var(--c-ink);font-weight:700}

/* 品牌故事 */
.story-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
@media (min-width:1024px){ .story-grid{grid-template-columns:5fr 7fr;gap:64px} }
.story-media{position:relative}
.story-media::before{content:"";position:absolute;left:24px;right:-24px;top:24px;bottom:-24px;background:var(--c-surface-2);border-radius:18px}
.story-media img{position:relative;z-index:1;width:100%;height:300px;object-fit:cover;border-radius:18px;box-shadow:var(--sh-2)}
@media (min-width:1024px){ .story-media img{height:380px} }
.story-text p{margin-top:16px;color:var(--c-ink-2);font-size:16px}
.point-list{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.point-list li{display:flex;gap:14px;align-items:flex-start;font-size:15px;color:var(--c-ink)}
.point-num{flex:none;width:28px;height:28px;border-radius:999px;background:var(--grad-brand);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:3px}

/* 精选卡 */
.feature-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:1024px){ .feature-grid{grid-template-columns:7fr 5fr;align-items:stretch} }
.card-feature{position:relative;display:flex;flex-direction:column;background:#fff;border-radius:var(--r-card);border:1px solid var(--c-line);box-shadow:var(--sh-2);overflow:hidden;transition:transform .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out}
.card-feature:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#D9CFFA}
.card-feature img{width:100%;height:230px;object-fit:cover}
@media (min-width:1024px){ .card-feature img{height:300px} }
.card-body{padding:24px 26px 28px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:20px;font-weight:700;line-height:1.4}
.card-body p{font-size:15px;color:var(--c-ink-2)}
.card-arrow{margin-top:auto;display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--c-brand-600);transition:transform .24s ease-out}
.card-feature:hover .card-arrow,.card-row:hover .card-arrow{transform:translateX(4px)}
.feature-side{display:grid;grid-template-columns:1fr;gap:22px}
.card-row{display:grid;grid-template-columns:120px 1fr;gap:0;background:#fff;border:1px solid var(--c-line);border-radius:20px;box-shadow:var(--sh-2);overflow:hidden;transition:transform .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out}
.card-row:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#D9CFFA}
.card-row img{width:100%;height:100%;min-height:130px;object-fit:cover}
.card-row .row-body{padding:18px 20px}
.card-row h3{font-size:17px;font-weight:700;line-height:1.45}
.card-row p{margin-top:8px;font-size:14px;color:var(--c-ink-2)}

/* 最新信息列表 */
.news-list{border-top:1px solid var(--c-line)}
.news-row{display:grid;grid-template-columns:1fr;gap:12px;padding:20px 14px;border-bottom:1px solid var(--c-line);transition:background .22s ease-out}
.news-row:hover{background:var(--c-surface-2)}
@media (min-width:1024px){
  .news-row{grid-template-columns:92px minmax(0,1fr) auto;gap:26px;align-items:center;padding:22px 18px}
}
.news-date{display:inline-flex;align-items:center;justify-content:center;text-align:center;background:var(--grad-brand);color:#fff;font-size:12.5px;font-weight:700;letter-spacing:.02em;border-radius:14px;padding:10px 12px;line-height:1.35;font-variant-numeric:tabular-nums}
@media (min-width:1024px){ .news-date{min-height:60px} }
.news-title{font-size:19px;font-weight:700;line-height:1.45;transition:color .22s ease-out}
.news-row:hover .news-title{color:var(--c-brand-600)}
.news-sum{margin-top:8px;font-size:14.5px;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-side{display:flex;align-items:center;gap:14px;justify-content:flex-start}
@media (min-width:1024px){ .news-side{justify-content:flex-end} }
.pill{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.02em;padding:5px 13px;border-radius:999px;background:var(--c-surface-2);color:var(--c-brand-600)}
.news-arrow{color:var(--c-brand-600);opacity:.3;transition:opacity .22s ease-out,transform .22s ease-out;flex:none}
.news-row:hover .news-arrow{opacity:1;transform:translateX(4px)}
.news-empty{display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;padding:56px 20px;border-bottom:1px solid var(--c-line)}
.news-empty i{font-size:32px;color:var(--c-ink-3)}
.news-empty p{font-size:15.5px;color:var(--c-ink-2)}

/* 统计深色卡 */
.stats-band{background:var(--c-deep-2);border-radius:var(--r-band);padding:42px 26px;color:#fff;position:relative;overflow:hidden}
@media (min-width:1024px){ .stats-band{padding:56px 52px} }
.stats-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:64px 64px;pointer-events:none}
.stats-grid{position:relative;display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
@media (min-width:1024px){ .stats-grid{grid-template-columns:repeat(4,1fr);gap:32px} }
.stat-num{font-size:32px;font-weight:800;line-height:1.1;color:var(--c-lime);letter-spacing:-.01em}
.stat-label{margin-top:8px;font-size:13px;color:rgba(255,255,255,.66)}
.proof-row{position:relative;margin-top:38px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14);display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:768px){ .proof-row{grid-template-columns:repeat(3,1fr)} }
.proof{display:flex;align-items:center;gap:12px;font-size:13.5px;color:rgba(255,255,255,.78)}
.proof i{color:rgba(255,255,255,.5);font-size:15px}

/* 分类入口 */
.cat-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:1024px){ .cat-grid{grid-template-columns:1.45fr 1fr;align-items:stretch} }
.cat-card{display:flex;flex-direction:column;gap:14px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:26px;transition:transform .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#D9CFFA}
.cat-card-soft{background:var(--grad-soft)}
.cat-card-lg{justify-content:space-between}
@media (min-width:1024px){ .cat-card-lg{grid-row:span 2} }
.cat-icon{width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:var(--c-surface-2);color:var(--c-brand-600);font-size:18px}
.cat-card h3{font-size:19px;font-weight:700}
.cat-card p{font-size:14.5px;color:var(--c-ink-2)}
.cat-media{width:100%;height:180px;object-fit:cover;border-radius:18px}
@media (min-width:1024px){ .cat-media{height:220px} }

/* CTA 订阅 */
.cta-band{position:relative;overflow:hidden;background:var(--grad-brand);border-radius:var(--r-band);padding:40px 24px;color:#fff}
@media (min-width:1024px){ .cta-band{padding:56px;display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center} }
.cta-band h2{font-size:clamp(23px,3vw,34px);font-weight:800;line-height:1.25}
.cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.85)}
.sub-form{margin-top:22px;display:flex;flex-wrap:wrap;gap:12px}
.sub-form input{flex:1 1 240px;min-width:0;height:52px;padding:0 22px;border-radius:999px;border:1px solid rgba(255,255,255,.45);background:rgba(255,255,255,.14);color:#fff;transition:border-color .2s ease-out,background .2s ease-out,box-shadow .2s ease-out}
.sub-form input::placeholder{color:rgba(255,255,255,.72)}
.sub-form input:focus{outline:none;border-color:#fff;background:rgba(255,255,255,.22);box-shadow:0 0 0 4px rgba(255,255,255,.18)}
.btn-lime{background:var(--c-lime);color:var(--c-deep);height:52px;padding:0 30px;border-radius:999px}
.btn-lime:hover{filter:brightness(1.05);transform:translateY(-2px)}
.cta-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.7)}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:1024px){ .faq-grid{grid-template-columns:1fr 1fr;gap:18px 22px} }
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:12px;padding:18px 22px;transition:background .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out}
.faq-item[open]{background:var(--c-surface-2);border-color:#D9CFFA;box-shadow:var(--sh-2)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer;list-style:none;font-size:17px;font-weight:700;line-height:1.5}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";flex:none;font-size:20px;font-weight:700;color:var(--c-brand-600);transition:transform .22s ease-out}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{margin-top:12px;font-size:15px;color:var(--c-ink-2)}

/* 页脚 */
.site-footer{margin-top:80px;background:var(--c-deep);color:#fff;padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px} }
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff}
.footer-brand .brand-mark{box-shadow:none}
.footer-about{margin-top:16px;font-size:14px;color:rgba(255,255,255,.68);max-width:320px}
.footer-title{font-size:14px;font-weight:700;color:var(--c-lime);letter-spacing:.02em;margin-bottom:16px}
.footer-list li{margin-bottom:10px}
.footer-list a,.footer-list span{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease-out,transform .2s ease-out;display:inline-block}
.footer-list a:hover{color:var(--c-lime);transform:translateX(4px)}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55)}

/* roulang page: article */
:root{
  --c-bg:#F7F5FF; --c-deep:#17102E; --c-deep-2:#221449;
  --c-surface:#FFFFFF; --c-surface-2:#EFEBFB; --c-line:#E3DDF6;
  --c-brand-700:#3B1FBF; --c-brand-600:#4E2AE0; --c-brand-500:#7A5AF8;
  --c-coral:#FF6B5A; --c-lime:#D8F24B; --c-cyan:#35D6C8;
  --c-ink:#17102E; --c-ink-2:#5A5478; --c-ink-3:#8C86A8;
  --grad-brand:linear-gradient(118deg,#4E2AE0 0%,#7A5AF8 48%,#FF6B5A 108%);
  --grad-soft:linear-gradient(118deg,#EFEBFB 0%,#FDF0EC 100%);
  --sh-1:0 4px 16px -10px rgba(46,26,120,.18);
  --sh-2:0 10px 30px -14px rgba(46,26,120,.22);
  --sh-3:0 24px 60px -24px rgba(46,26,120,.35);
  --r-card:24px; --r-big:30px; --r-img:18px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--c-bg);color:var(--c-ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.01em;font-style:normal;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(122,90,248,.25);}
:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:2px;border-radius:8px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.tnum{font-variant-numeric:tabular-nums;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  transition:background .25s ease, box-shadow .25s ease, backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);
  box-shadow:var(--sh-2);
  border-bottom:1px solid rgba(227,221,246,.9);
}
.nav-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:72px;gap:16px;position:relative;
}
.nav-left{display:flex;align-items:center;gap:6px;justify-self:start;}
.nav-right{display:flex;align-items:center;gap:8px;justify-self:end;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--c-ink-2);border-radius:999px;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--c-brand-700);background:rgba(239,235,251,.85);}
.nav-link.active{color:var(--c-ink);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-16px;height:3px;border-radius:999px;
  background:var(--grad-brand);
}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;}
.brand-mark{
  width:28px;height:28px;border-radius:9px;background:var(--grad-brand);flex:none;
  box-shadow:0 8px 18px -8px rgba(78,42,224,.75);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;border-radius:4px;
  background:
    linear-gradient(rgba(255,255,255,.85),rgba(255,255,255,.85)) 0 0/100% 2px no-repeat,
    linear-gradient(rgba(255,255,255,.85),rgba(255,255,255,.85)) 0 100%/100% 2px no-repeat,
    linear-gradient(rgba(255,255,255,.85),rgba(255,255,255,.85)) 0 0/2px 100% no-repeat,
    linear-gradient(rgba(255,255,255,.85),rgba(255,255,255,.85)) 100% 0/2px 100% no-repeat;
}
.brand-text{font-size:19px;font-weight:800;color:var(--c-ink);letter-spacing:-.02em;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:14px;border:1px solid var(--c-line);
  background:var(--c-surface);align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-toggle:hover{border-color:var(--c-brand-500);box-shadow:var(--sh-2);}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--c-ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;border-radius:2px;background:var(--c-ink);
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-size:15px;font-weight:600;padding:12px 26px;border:1px solid transparent;
  cursor:pointer;transition:transform .2s ease,box-shadow .25s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-2);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:var(--c-surface);color:var(--c-brand-700);border-color:var(--c-line);}
.btn-outline:hover{border-color:var(--c-brand-500);background:var(--c-surface-2);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-link{color:var(--c-brand-600);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:4px;transition:gap .2s ease,color .2s ease;}
.btn-link:hover{gap:9px;color:var(--c-brand-700);}

/* ---------- pills ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  background:var(--c-surface-2);color:var(--c-brand-700);
}
.pill-lime{background:var(--c-lime);color:var(--c-ink);}
.pill-cyan{background:transparent;color:#1E7F76;border:1px solid rgba(53,214,200,.55);}

/* ---------- breadcrumb ---------- */
.crumb-wrap{border-bottom:1px solid var(--c-line);background:rgba(255,255,255,.6);}
.crumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);
  padding:14px 0;overflow:hidden;white-space:nowrap;
}
.crumb a{color:var(--c-ink-2);transition:color .2s ease;}
.crumb a:hover{color:var(--c-brand-600);}
.crumb .sep{color:#C9C2E4;}
.crumb .current{color:var(--c-ink-2);overflow:hidden;text-overflow:ellipsis;max-width:46vw;}

/* ---------- article head ---------- */
.article-top{padding:44px 0 0;}
.article-kicker{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--c-brand-600);margin-bottom:14px;}
.article-title{font-size:clamp(26px,4vw,40px);line-height:1.22;font-weight:800;max-width:900px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--c-ink-3);margin-top:18px;}
.article-meta .dot{width:4px;height:4px;border-radius:999px;background:#CFC8EA;display:inline-block;}
.cover{
  margin-top:28px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-2);background:var(--c-surface-2);
}
.cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* ---------- layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;padding:52px 0 72px;align-items:start;}
.article-body{font-size:17px;line-height:1.9;color:var(--c-ink);max-width:760px;}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;color:#241C40;}
.article-body h2{position:relative;font-size:clamp(20px,2.4vw,26px);font-weight:800;margin:44px 0 16px;padding-left:18px;line-height:1.35;}
.article-body h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:999px;background:var(--grad-brand);}
.article-body h3{font-size:20px;font-weight:700;margin:30px 0 12px;}
.article-body h4{font-size:17px;font-weight:700;margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.55em;}
.article-body ul li::marker{color:var(--c-brand-600);}
.article-body ol li::marker{color:var(--c-brand-600);font-weight:600;}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--c-surface-2);
  border-left:4px solid var(--c-brand-500);border-radius:18px;color:var(--c-ink-2);font-size:16px;
}
.article-body img{border-radius:var(--r-img);margin:24px 0;}
.article-body a{color:var(--c-brand-600);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-brand-700);}
.article-body pre,.article-body code{
  background:var(--c-surface-2);border-radius:14px;font-family:ui-monospace,Consolas,Menlo,monospace;
  font-size:14px;color:#2C2350;
}
.article-body pre{padding:16px 18px;overflow-x:auto;margin:22px 0;}
.article-body code{padding:2px 6px;}
.article-body pre code{padding:0;background:transparent;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--c-surface-2);font-weight:700;}

/* ---------- sidebar ---------- */
.side{position:sticky;top:96px;display:grid;gap:20px;}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.side-title{font-size:15px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-title::before{content:"";width:14px;height:4px;border-radius:999px;background:var(--grad-brand);}
.cat-list{display:grid;gap:6px;}
.cat-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 14px;border-radius:14px;font-size:15px;color:var(--c-ink-2);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.cat-list a:hover{background:var(--c-surface-2);color:var(--c-brand-700);transform:translateX(3px);}
.cat-list a.is-active{background:var(--grad-soft);color:var(--c-brand-700);font-weight:600;}
.read-list{display:grid;gap:2px;}
.read-list a{
  display:block;padding:11px 0;font-size:14.5px;color:var(--c-ink-2);border-bottom:1px dashed var(--c-line);
  transition:color .2s ease,padding-left .2s ease;
}
.read-list a:last-child{border-bottom:0;}
.read-list a:hover{color:var(--c-brand-600);padding-left:6px;}
.side-cta{background:var(--grad-soft);border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);}
.side-cta h3{font-size:17px;margin-bottom:8px;}
.side-cta p{font-size:14px;color:var(--c-ink-2);margin-bottom:16px;}

/* ---------- article footer actions ---------- */
.article-end{margin-top:44px;padding-top:26px;border-top:1px solid var(--c-line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.end-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.to-top{
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-ink-2);border-radius:999px;
  padding:9px 20px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease;
}
.to-top:hover{border-color:var(--c-brand-500);color:var(--c-brand-700);box-shadow:var(--sh-2);}

/* ---------- empty state ---------- */
.empty-state{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:56px 28px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state .ic{
  width:56px;height:56px;margin:0 auto 18px;border-radius:18px;background:var(--grad-soft);
  display:flex;align-items:center;justify-content:center;font-size:22px;color:var(--c-brand-600);
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--c-ink-2);font-size:15px;margin-bottom:22px;}

/* ---------- related ---------- */
.related{padding:0 0 84px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);}
.section-head p{font-size:14.5px;color:var(--c-ink-2);margin-top:8px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#D6CCF6;}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:17px;line-height:1.5;}
.rel-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--c-ink-3);margin-top:auto;}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 88px;}
.cta-box{
  position:relative;overflow:hidden;border-radius:var(--r-big);
  background:var(--grad-brand);color:#fff;
  display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:center;
  padding:46px 48px;box-shadow:var(--sh-3);
}
.cta-box::before{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:34px 34px;
}
.cta-box h2{font-size:clamp(22px,2.6vw,32px);position:relative;}
.cta-box p{font-size:14.5px;color:rgba(255,255,255,.82);margin-top:10px;position:relative;}
.cta-form{display:flex;gap:12px;position:relative;}
.cta-form input{
  flex:1;min-width:0;border-radius:999px;border:1px solid rgba(255,255,255,.4);
  background:rgba(255,255,255,.14);color:#fff;padding:13px 20px;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.cta-form input::placeholder{color:rgba(255,255,255,.7);}
.cta-form input:focus{outline:none;border-color:#fff;background:rgba(255,255,255,.2);box-shadow:0 0 0 4px rgba(255,255,255,.2);}
.cta-form button{
  border:0;border-radius:999px;background:var(--c-lime);color:var(--c-ink);
  padding:13px 26px;font-size:15px;font-weight:700;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease;
}
.cta-form button:hover{transform:translateY(-2px);box-shadow:0 16px 40px -18px rgba(0,0,0,.5);}
.cta-note{font-size:13px;color:rgba(255,255,255,.72);margin-top:12px;position:relative;}

/* ---------- footer ---------- */
.site-footer{background:var(--c-deep);color:#fff;padding:64px 0 26px;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;margin-bottom:14px;}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:320px;}
.footer-title{font-size:14px;font-weight:700;color:var(--c-lime);margin-bottom:16px;letter-spacing:.04em;}
.footer-list{display:grid;gap:11px;}
.footer-list a,.footer-list span{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s ease,transform .2s ease;display:inline-block;}
.footer-list a:hover{color:var(--c-lime);transform:translateX(4px);}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(23,16,46,.45);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;top:0;left:0;right:0;background:var(--c-surface);
  border-radius:0 0 26px 26px;padding:22px 24px 28px;transform:translateY(-12px);
  transition:transform .28s ease;max-height:100%;overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.drawer-close{background:var(--c-surface-2);border:0;border-radius:12px;width:38px;height:38px;font-size:18px;color:var(--c-ink-2);cursor:pointer;}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  font-size:18px;line-height:56px;color:var(--c-ink);border-bottom:1px solid var(--c-line);
}
.drawer-links a.is-active{color:var(--c-brand-700);font-weight:700;}
.drawer-foot{margin-top:22px;display:grid;gap:14px;}
.drawer-foot .brand{justify-self:start;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .nav-toggle{display:inline-flex;}
  .nav-left{display:none;}
  .nav-right .nav-link{display:none;}
  .brand{position:absolute;left:50%;transform:translateX(-50%);}
  .layout{grid-template-columns:minmax(0,1fr);gap:36px;padding:40px 0 56px;}
  .side{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-box{grid-template-columns:1fr;padding:36px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  body{font-size:15.5px;line-height:1.8;}
  .brand-text{font-size:17px;}
  .nav-link.active::after{display:none;}
  .article-top{padding:32px 0 0;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .crumb .current{max-width:38vw;}
  .cta-form{flex-direction:column;}
  .cta-form button{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .article-body{font-size:16px;}
  .cta-box{padding:28px 22px;border-radius:26px;}
  .side-card,.side-cta{padding:18px;}
}

/* roulang page: category1 */
:root{
  --c-bg:#F7F5FF;
  --c-deep:#17102E;
  --c-deep-2:#221449;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEBFB;
  --c-line:#E3DDF6;
  --c-brand-700:#3B1FBF;
  --c-brand-600:#4E2AE0;
  --c-brand-500:#7A5AF8;
  --c-coral:#FF6B5A;
  --c-lime:#D8F24B;
  --c-cyan:#35D6C8;
  --c-ink:#17102E;
  --c-ink-2:#5A5478;
  --c-ink-3:#8C86A8;
  --grad-brand:linear-gradient(118deg,#4E2AE0 0%,#7A5AF8 48%,#FF6B5A 108%);
  --grad-soft:linear-gradient(118deg,#EFEBFB 0%,#FDF0EC 100%);
  --sh-2:0 10px 30px -14px rgba(46,26,120,.22);
  --sh-3:0 24px 60px -24px rgba(46,26,120,.35);
  --r-card:24px;
  --r-big:32px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;font-style:normal}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
summary{list-style:none}
summary::-webkit-details-marker{display:none}
:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:2px;border-radius:8px}
::selection{background:#D8F24B;color:#17102E}

.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--c-brand-700);background:var(--c-surface-2);
  border:1px solid var(--c-line);border-radius:999px;padding:6px 14px;
}
.eyebrow.on-dark{background:rgba(216,242,75,.14);border-color:rgba(216,242,75,.35);color:#D8F24B}
h1{font-size:clamp(30px,5vw,54px);line-height:1.15;letter-spacing:-.01em}
h2{font-size:clamp(23px,3vw,36px);line-height:1.25}
h3{font-size:20px;line-height:1.4;font-weight:700}
.lead{font-size:17px;line-height:1.85;color:var(--c-ink-2)}
.muted{color:var(--c-ink-2)}
.tiny{font-size:13px;color:var(--c-ink-3)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.78);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out;
}
.site-header.scrolled{
  background:rgba(255,255,255,.94);
  box-shadow:var(--sh-2);
  border-bottom-color:var(--c-line);
}
.nav-grid{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  height:72px;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:6px}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 13px;border-radius:12px;
  font-size:15px;font-weight:500;color:var(--c-ink-2);
  transition:color .22s ease-out,background .22s ease-out;
}
.nav-link:hover{color:var(--c-brand-600);background:var(--c-surface-2)}
.nav-link.active{color:var(--c-ink);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:3px;border-radius:999px;
  background:var(--grad-brand);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--c-ink);
  padding:6px 10px;border-radius:14px;
}
.brand-mark{
  position:relative;width:32px;height:32px;border-radius:11px;
  background:var(--grad-brand);
  box-shadow:0 8px 20px -8px rgba(78,42,224,.7);
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;
  border-radius:3px;
  background:
    linear-gradient(#fff,#fff) center/3px 3px no-repeat,
    linear-gradient(#fff,#fff) left top/3px 3px no-repeat,
    linear-gradient(#fff,#fff) right top/3px 3px no-repeat,
    linear-gradient(#fff,#fff) left bottom/3px 3px no-repeat,
    linear-gradient(#fff,#fff) right bottom/3px 3px no-repeat,
    linear-gradient(#fff,#fff) center top/3px 3px no-repeat,
    linear-gradient(#fff,#fff) left center/3px 3px no-repeat,
    linear-gradient(#fff,#fff) right center/3px 3px no-repeat,
    linear-gradient(#fff,#fff) center bottom/3px 3px no-repeat;
  opacity:.92;
}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:14px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
  align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.nav-toggle:hover{border-color:var(--c-brand-500);box-shadow:var(--sh-2)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
  transition:transform .22s ease-out,opacity .22s ease-out;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg)}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--c-line);
  background:rgba(255,255,255,.98);
  padding:14px 20px 26px;
}
.mobile-drawer.open{display:block}
.mobile-drawer .drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  font-size:18px;font-weight:500;color:var(--c-ink);
  min-height:56px;padding:0 4px;border-bottom:1px solid var(--c-line);
}
.mobile-drawer .drawer-link.active{color:var(--c-brand-600);font-weight:700}
.mobile-drawer .drawer-foot{margin-top:20px;display:flex;flex-direction:column;gap:14px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;border-radius:999px;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .22s ease-out,box-shadow .22s ease-out,background .22s ease-out,border-color .22s ease-out,filter .22s ease-out,color .22s ease-out;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-2)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--sh-3)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;border-color:var(--c-line);color:var(--c-brand-700)}
.btn-outline:hover{border-color:var(--c-brand-500);background:var(--c-surface-2);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-lime{background:var(--c-lime);color:#17102E;border-radius:14px}
.btn-lime:hover{filter:brightness(1.05);transform:translateY(-2px);box-shadow:var(--sh-3)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--c-brand-600);font-size:15px}
.link-arrow i{transition:transform .22s ease-out;font-style:normal}
.link-arrow:hover i{transform:translateX(4px)}

/* ============ 面包屑 ============ */
.crumb{padding:22px 0 6px}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3)}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb a:hover{color:var(--c-brand-600)}
.crumb .sep{color:#C6BFE2}
.crumb .current{color:var(--c-ink-2)}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,#F1EDFD 100%);
  padding:36px 0 0;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(78,42,224,.06) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(78,42,224,.06) 1px,transparent 1px),
    linear-gradient(to right,rgba(78,42,224,.06) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(78,42,224,.06) 1px,transparent 1px);
  background-size:36px 36px,36px 36px,108px 108px,108px 108px;
  background-position:0 0,0 0,18px 18px,18px 18px;
}
.hero::after{
  content:"";position:absolute;right:-160px;bottom:-220px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,90,.30) 0%,rgba(122,90,248,.16) 45%,transparent 72%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
  padding:24px 0 12px;
}
.hero h1{margin:18px 0 18px}
.hero .lead{max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 34px}
.point-list{display:grid;gap:14px}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;line-height:1.75;color:var(--c-ink-2)}
.point-num{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--grad-brand);color:#fff;
  font-size:13px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  margin-top:3px;
}
.hero-figure{position:relative}
.hero-figure .frame{
  position:relative;border-radius:28px;overflow:hidden;
  border:1px solid rgba(255,255,255,.75);
  box-shadow:var(--sh-3);
  background:#fff;
}
.hero-figure .frame img{width:100%;height:420px;object-fit:cover}
.hero-figure .frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(23,16,46,0) 45%,rgba(23,16,46,.55) 100%);
}
.hero-figure .float-badge{
  position:absolute;left:-18px;bottom:26px;
  background:var(--c-lime);color:#17102E;
  border-radius:18px;padding:12px 18px;box-shadow:var(--sh-3);
  font-size:12px;font-weight:600;line-height:1.3;
}
.hero-figure .float-badge strong{display:block;font-size:24px;font-weight:800;letter-spacing:-.01em}
.hero-figure .float-tag{
  position:absolute;right:16px;top:16px;
  background:rgba(23,16,46,.72);color:#fff;
  border:1px solid rgba(255,255,255,.22);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;
  backdrop-filter:blur(6px);
}

/* ============ 互链胶囊 + 数据徽章 ============ */
.chipbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:26px 0 0}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  padding:8px 16px;border-radius:999px;
  background:#fff;border:1px solid var(--c-line);color:var(--c-ink-2);
  transition:border-color .2s ease-out,color .2s ease-out,background .2s ease-out,transform .2s ease-out;
}
.chip:hover{border-color:var(--c-brand-500);color:var(--c-brand-600);transform:translateY(-2px)}
.chip.active{background:var(--c-surface-2);border-color:#CFC5F2;color:var(--c-brand-700)}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--c-cyan)}

.stat-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  margin-top:34px;
}
.stat-card{
  background:#fff;border:1px solid var(--c-line);border-radius:20px;
  padding:20px 22px;box-shadow:var(--sh-2);
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.stat-card .num{font-size:30px;font-weight:800;color:var(--c-brand-700);letter-spacing:-.02em}
.stat-card .num em{font-style:normal;font-size:15px;font-weight:700;color:var(--c-coral);margin-left:2px}
.stat-card .cap{font-size:12.5px;color:var(--c-ink-2);margin-top:4px;letter-spacing:.02em}

/* ============ 卡片网格 ============ */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--sh-2);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#D6CDF6}
.card h3{margin:16px 0 10px}
.card p{font-size:15px;color:var(--c-ink-2)}
.icon-box{
  width:48px;height:48px;border-radius:16px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad-soft);border:1px solid var(--c-line);
  color:var(--c-brand-600);font-size:20px;font-weight:800;
}
.icon-box.lime{background:rgba(216,242,75,.35);color:#4A4E10;border-color:rgba(216,242,75,.7)}
.icon-box.cyan{background:rgba(53,214,200,.16);color:#127A72;border-color:rgba(53,214,200,.45)}
.icon-box.coral{background:rgba(255,107,90,.14);color:#B23A2B;border-color:rgba(255,107,90,.4)}
.card-list{margin-top:16px;display:grid;gap:10px}
.card-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--c-ink-2)}
.card-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--grad-brand);
}

/* ============ 对比区（深色） ============ */
.compare{
  background:var(--c-deep);
  border-radius:var(--r-big);
  padding:56px 48px;
  color:#fff;
  position:relative;overflow:hidden;
}
.compare::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:36px 36px;
}
.compare > *{position:relative;z-index:1}
.compare h2{color:#fff;margin-top:14px}
.compare .lead{color:rgba(255,255,255,.72);max-width:640px;margin-top:14px}
.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.compare-card{
  background:var(--c-deep-2);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);
  padding:28px;
  transition:transform .22s ease-out,border-color .22s ease-out,background .22s ease-out;
}
.compare-card:hover{transform:translateY(-4px);border-color:rgba(216,242,75,.45);background:#281854}
.compare-card .tag{
  display:inline-flex;align-items:center;font-size:12.5px;font-weight:600;letter-spacing:.02em;
  border-radius:999px;padding:5px 12px;
  background:rgba(216,242,75,.16);color:var(--c-lime);border:1px solid rgba(216,242,75,.35);
}
.compare-card h3{color:#fff;margin:14px 0 10px}
.compare-card p{font-size:14.5px;color:rgba(255,255,255,.7)}
.compare-card ul{margin-top:14px;display:grid;gap:9px}
.compare-card li{font-size:14px;color:rgba(255,255,255,.62);padding-left:16px;position:relative}
.compare-card li::before{
  content:"";position:absolute;left:0;top:.75em;width:6px;height:6px;border-radius:50%;
  background:var(--c-cyan);
}

/* ============ 步骤流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.step{
  background:#fff;border:1px solid var(--c-line);border-radius:20px;padding:26px 24px;
  box-shadow:var(--sh-2);
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.step .idx{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--c-brand-600)}
.step h3{font-size:18px;margin:12px 0 8px}
.step p{font-size:14.5px;color:var(--c-ink-2)}
.media-strip{
  margin-top:34px;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--c-line);box-shadow:var(--sh-2);
}
.media-strip img{width:100%;height:260px;object-fit:cover}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:16px;
  padding:22px 24px;box-shadow:var(--sh-2);
  transition:background .2s ease-out,border-color .2s ease-out;
}
.faq-item[open]{background:var(--c-surface-2);border-color:#D6CDF6}
.faq-item summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  font-size:17px;font-weight:700;line-height:1.5;cursor:pointer;
}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:22px;font-weight:600;line-height:1;
  color:var(--c-brand-600);transition:transform .22s ease-out;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding-top:14px;font-size:15px;color:var(--c-ink-2);line-height:1.8}

/* ============ CTA ============ */
.cta-band{
  border-radius:var(--r-big);
  background:var(--grad-brand);
  padding:52px 48px;
  color:#fff;
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
  position:relative;overflow:hidden;
  box-shadow:var(--sh-3);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.07) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:36px 36px;
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.86);margin-top:14px;font-size:15.5px;max-width:480px}
.cta-form{display:flex;flex-wrap:wrap;gap:12px}
.cta-form input{
  flex:1 1 240px;min-width:0;
  border-radius:999px;border:1px solid rgba(255,255,255,.42);
  background:rgba(255,255,255,.14);color:#fff;
  padding:15px 22px;font-size:15px;
  transition:border-color .2s ease-out,background .2s ease-out,box-shadow .2s ease-out;
}
.cta-form input::placeholder{color:rgba(255,255,255,.7)}
.cta-form input:focus{outline:none;border-color:#fff;background:rgba(255,255,255,.2);box-shadow:0 0 0 4px rgba(255,255,255,.18)}
.cta-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.72)}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  background:var(--c-deep);
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px}
.footer-title{font-size:14px;font-weight:700;color:var(--c-lime);letter-spacing:.02em;margin-bottom:16px}
.footer-list{display:grid;gap:11px}
.footer-list a,.footer-list span{
  font-size:14px;color:rgba(255,255,255,.62);
  transition:color .2s ease-out,transform .2s ease-out;
  display:inline-block;
}
.footer-list a:hover{color:var(--c-lime);transform:translateX(4px)}
.footer-bottom{
  margin-top:52px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-left,.nav-right{display:none}
  .nav-grid{grid-template-columns:auto 1fr auto;height:64px}
  .nav-toggle{display:inline-flex}
  .brand{justify-self:center}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-figure .frame img{height:340px}
  .compare{padding:44px 30px}
  .compare-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .section{padding:72px 0}
  .cta-band{grid-template-columns:1fr;padding:40px 30px}
}
@media (max-width:768px){
  .site-container{padding:0 20px}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .grid-2,.grid-3,.faq-grid{grid-template-columns:1fr}
  .hero{padding-top:20px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-figure .float-badge{left:12px;bottom:12px}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .card{padding:24px}
}
@media (max-width:520px){
  .site-container{padding:0 16px}
  .steps{grid-template-columns:1fr}
  .stat-card{padding:16px}
  .stat-card .num{font-size:24px}
  .btn{padding:13px 20px;font-size:14.5px}
  .compare{padding:34px 20px}
  .cta-band{padding:32px 20px}
  .hero-figure .frame img{height:260px}
}

/* roulang page: category3 */
:root{
  --c-bg:#F7F5FF;
  --c-deep:#17102E;
  --c-deep-2:#221449;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEBFB;
  --c-line:#E3DDF6;
  --c-brand-700:#3B1FBF;
  --c-brand-600:#4E2AE0;
  --c-brand-500:#7A5AF8;
  --c-coral:#FF6B5A;
  --c-lime:#D8F24B;
  --c-cyan:#35D6C8;
  --c-ink:#17102E;
  --c-ink-2:#5A5478;
  --c-ink-3:#8C86A8;
  --grad-brand:linear-gradient(118deg,#4E2AE0 0%,#7A5AF8 48%,#FF6B5A 108%);
  --grad-soft:linear-gradient(118deg,#EFEBFB 0%,#FDF0EC 100%);
  --r-card:24px;
  --r-lg:32px;
  --r-img:18px;
  --sh-2:0 10px 30px -14px rgba(46,26,120,.22);
  --sh-3:0 24px 60px -24px rgba(46,26,120,.35);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--c-bg);color:var(--c-ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
h1,h2,h3{font-style:normal}
:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:60;transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease)}
.site-header.scrolled{background:rgba(255,255,255,.92);-webkit-backdrop-filter:saturate(160%) blur(12px);backdrop-filter:saturate(160%) blur(12px);box-shadow:var(--sh-2);border-bottom:1px solid var(--c-line)}
.header-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:72px;gap:16px}
.nav-left{display:flex;align-items:center;gap:26px}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:22px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);padding:6px 0;transition:color .2s var(--ease);white-space:nowrap}
.nav-link:hover{color:var(--c-brand-600)}
.nav-link.active{color:var(--c-ink);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:3px;border-radius:3px;background:var(--grad-brand)}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.01em;color:var(--c-ink);white-space:nowrap}
.brand-mark{width:22px;height:22px;border-radius:7px;background:var(--grad-brand);box-shadow:0 6px 16px -6px rgba(78,42,224,.7);flex:none}
.nav-burger{display:none;width:42px;height:42px;align-items:center;justify-content:center;flex-direction:column;gap:5px;border-radius:13px;border:1px solid var(--c-line);background:#fff;cursor:pointer;transition:background .2s var(--ease),border-color .2s var(--ease)}
.nav-burger:hover{background:var(--c-surface-2);border-color:var(--c-brand-500)}
.nav-burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink)}
.mobile-drawer{display:none}
@media (max-width:1023px){
  .nav-left,.nav-right{display:none}
  .header-inner{grid-template-columns:auto 1fr auto}
  .nav-burger{display:flex}
  .brand{justify-self:center}
  .drawer-hold{width:42px;height:42px;display:block}
  .mobile-drawer{
    display:block;position:fixed;left:0;right:0;top:72px;bottom:0;background:#fff;z-index:55;
    padding:20px 20px 40px;overflow-y:auto;opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .25s var(--ease),transform .25s var(--ease);
  }
  .mobile-drawer.open{opacity:1;transform:none;pointer-events:auto}
  .m-link{display:flex;justify-content:space-between;align-items:center;font-size:18px;font-weight:600;padding:17px 0;border-bottom:1px solid var(--c-line);color:var(--c-ink)}
  .m-link span{color:var(--c-ink-3);font-size:14px}
  .m-foot{margin-top:26px;display:grid;gap:14px}
  .m-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--c-ink-2);font-size:15px}
}
@media (min-width:1024px){.mobile-drawer{display:none}}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;border-radius:999px;padding:13px 26px;border:1px solid transparent;cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease)}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 12px 26px -14px rgba(78,42,224,.75)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:var(--sh-3)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;border-color:var(--c-line);color:var(--c-brand-700)}
.btn-outline:hover{background:var(--c-surface-2);border-color:var(--c-brand-500);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-lime{background:var(--c-lime);color:var(--c-deep)}
.btn-lime:hover{transform:translateY(-2px);box-shadow:0 18px 40px -18px rgba(216,242,75,.75)}
.btn-sm{padding:9px 18px;font-size:14px}

/* ============ 面包屑 / 胶囊 ============ */
.crumb{padding:20px 0 0;font-size:13px;color:var(--c-ink-3)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0}
.crumb a{color:var(--c-ink-2)}
.crumb a:hover{color:var(--c-brand-600)}
.crumb .current{color:var(--c-ink-2)}
.pill-row{display:flex;flex-wrap:wrap;gap:10px}
.pill{display:inline-flex;align-items:center;font-size:13px;font-weight:600;letter-spacing:.02em;padding:8px 16px;border-radius:999px;background:var(--c-surface-2);color:var(--c-brand-700);border:1px solid transparent;transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease)}
.pill:hover{border-color:var(--c-brand-500);transform:translateY(-2px)}
.pill.is-current{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px -14px rgba(78,42,224,.8)}
.pill-lime{display:inline-flex;align-items:center;font-size:13px;font-weight:700;letter-spacing:.02em;padding:5px 12px;border-radius:999px;background:var(--c-lime);color:var(--c-deep)}
.pill-cyan{display:inline-flex;align-items:center;font-size:13px;font-weight:600;letter-spacing:.02em;padding:5px 12px;border-radius:999px;border:1px solid var(--c-cyan);color:#0E6E66}

/* ============ 窄条 Hero ============ */
.hero-narrow{position:relative;overflow:hidden;background:var(--c-deep);border-radius:0 0 32px 32px;margin-top:18px;padding:50px 0 44px;color:#fff}
.hero-narrow::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;opacity:.26}
.hero-narrow::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:48px 48px}
.hero-narrow .container{position:relative;z-index:2}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--c-lime);margin:0 0 14px}
.hero-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--c-lime)}
.hero-narrow h1{font-size:clamp(28px,4.6vw,46px);line-height:1.18;font-weight:800;letter-spacing:-.01em;margin:0 0 16px;max-width:900px}
.hero-lead{font-size:16px;line-height:1.8;color:rgba(255,255,255,.8);max-width:660px;margin:0}
.hero-chips{display:flex;gap:14px;margin-top:32px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
.hero-chips::-webkit-scrollbar{display:none}
@media (min-width:900px){.hero-chips{flex-wrap:wrap;overflow:visible}}
.stat-chip{flex:0 0 auto;background:rgba(255,255,255,.97);border-radius:18px;padding:14px 20px;min-width:190px;border:1px solid rgba(255,255,255,.5);box-shadow:var(--sh-2)}
.stat-chip .num{font-size:23px;line-height:1.25;font-weight:800;color:var(--c-brand-700);font-variant-numeric:tabular-nums}
.stat-chip .lbl{font-size:12.5px;color:var(--c-ink-2);line-height:1.6}

/* ============ 侧目录 + 长文 ============ */
.doc-layout{display:grid;grid-template-columns:1fr;gap:32px;padding:52px 0 0}
@media (min-width:1024px){
  .doc-layout{grid-template-columns:280px minmax(0,1fr);gap:56px;padding:72px 0 0}
  .toc{position:sticky;top:96px;align-self:start}
}
.toc{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-2)}
.toc-title{font-size:13.5px;font-weight:700;letter-spacing:.04em;color:var(--c-ink-3);margin:0 0 14px}
.toc ol{list-style:none;margin:0;padding:0}
.toc a{display:flex;gap:10px;align-items:baseline;font-size:14.5px;color:var(--c-ink-2);padding:9px 11px;border-radius:12px;transition:background .2s var(--ease),color .2s var(--ease)}
.toc a:hover{background:var(--c-surface-2);color:var(--c-brand-700)}
.toc .n{font-size:12px;font-weight:700;color:var(--c-brand-500);font-variant-numeric:tabular-nums}
.toc-note{margin-top:16px;padding-top:16px;border-top:1px solid var(--c-line);font-size:13px;line-height:1.75;color:var(--c-ink-3)}

.doc-body{max-width:780px}
.doc-section{margin-bottom:54px;scroll-margin-top:96px}
.doc-section h2{position:relative;font-size:clamp(22px,2.7vw,30px);line-height:1.3;font-weight:800;letter-spacing:-.01em;margin:0 0 20px;padding-left:18px}
.doc-section h2::before{content:"";position:absolute;left:0;top:.24em;width:5px;height:20px;border-radius:4px;background:var(--grad-brand)}
.doc-section h3{font-size:19px;font-weight:700;margin:28px 0 10px;color:var(--c-ink)}
.doc-section p{font-size:16.5px;line-height:1.9;color:#332B52;margin:0 0 16px}
.doc-figure{margin:26px 0 34px}
.doc-figure img{width:100%;height:auto;border-radius:var(--r-img);object-fit:cover}
.doc-figure figcaption{margin-top:10px;font-size:13px;color:var(--c-ink-3);text-align:center}
.note-block{margin:24px 0;padding:18px 22px;background:var(--c-surface-2);border-left:4px solid var(--c-brand-500);border-radius:18px}
.note-block p{margin:0;font-size:15.5px;line-height:1.85;color:#3B3260}

.compare{list-style:none;margin:22px 0 0;padding:0;border-top:1px solid var(--c-line)}
.compare li{display:grid;grid-template-columns:160px minmax(0,1fr);gap:18px;padding:18px 2px;border-bottom:1px solid var(--c-line)}
.compare .k{font-weight:700;color:var(--c-ink);font-size:15.5px}
.compare .v{font-size:15.5px;line-height:1.85;color:var(--c-ink-2)}
@media (max-width:640px){.compare li{grid-template-columns:1fr;gap:6px}}

.steps{list-style:none;counter-reset:step;margin:22px 0 0;padding:0}
.steps li{counter-increment:step;position:relative;padding-left:48px;margin-bottom:18px;font-size:15.5px;line-height:1.85;color:var(--c-ink-2)}
.steps li strong{color:var(--c-ink)}
.steps li::before{content:counter(step);position:absolute;left:0;top:3px;width:30px;height:30px;border-radius:50%;background:var(--grad-brand);color:#fff;font-size:14px;font-weight:700;display:grid;place-items:center;font-variant-numeric:tabular-nums}

/* ============ 深色统计 ============ */
.deep-panel{background:var(--c-deep-2);border-radius:var(--r-lg);padding:38px 28px;color:#fff;margin:56px 0;position:relative;overflow:hidden}
.deep-panel::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:44px 44px;pointer-events:none}
.deep-panel > *{position:relative;z-index:2}
.deep-panel h2{font-size:clamp(21px,2.4vw,26px);font-weight:800;margin:0 0 26px;letter-spacing:-.01em}
.deep-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
@media (min-width:900px){.deep-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.deep-grid .num{font-size:32px;font-weight:800;color:var(--c-lime);line-height:1.2;font-variant-numeric:tabular-nums}
.deep-grid .lbl{font-size:13px;color:rgba(255,255,255,.66);line-height:1.7}
.deep-foot{margin-top:28px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);display:grid;gap:12px;font-size:13.5px;color:rgba(255,255,255,.68)}
@media (min-width:900px){.deep-foot{grid-template-columns:repeat(3,minmax(0,1fr))}}

/* ============ FAQ ============ */
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:14px;margin-bottom:12px;box-shadow:var(--sh-2);overflow:hidden;transition:background .2s var(--ease),border-color .2s var(--ease)}
.faq-item[open]{background:var(--c-surface-2);border-color:#D6CDF2}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 22px;font-size:17px;font-weight:700;display:flex;justify-content:space-between;align-items:center;gap:16px;color:var(--c-ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{flex:none;width:22px;height:22px;position:relative;transition:transform .25s var(--ease)}
.faq-item summary .plus::before,.faq-item summary .plus::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-brand-600);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 .ans{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}

/* ============ CTA ============ */
.cta-band{position:relative;overflow:hidden;background:var(--grad-brand);border-radius:var(--r-lg);padding:38px 26px;color:#fff;display:grid;gap:26px;margin:64px 0 0}
@media (min-width:1024px){.cta-band{grid-template-columns:5fr 7fr;align-items:center;padding:48px 44px;gap:36px}}
.cta-band .tex{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:48px 48px;pointer-events:none}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);font-weight:800;margin:0 0 12px;line-height:1.3}
.cta-band p{margin:0;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.86);max-width:440px}
.cta-form{display:flex;flex-wrap:wrap;gap:12px}
.cta-form input{flex:1 1 240px;min-width:0;border-radius:999px;border:1px solid rgba(255,255,255,.42);background:rgba(255,255,255,.14);color:#fff;padding:13px 22px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.cta-form input::placeholder{color:rgba(255,255,255,.72)}
.cta-form input:focus{outline:none;border-color:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.22)}
.cta-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.7)}

/* ============ 互链 ============ */
.cross-links{display:grid;grid-template-columns:1fr;gap:14px;margin-top:52px}
@media (min-width:768px){.cross-links{grid-template-columns:repeat(3,minmax(0,1fr))}}
.cross-links a{display:flex;align-items:center;justify-content:space-between;gap:14px;background:#fff;border:1px solid var(--c-line);border-radius:18px;padding:18px 22px;font-weight:600;color:var(--c-ink);box-shadow:var(--sh-2);transition:transform .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease)}
.cross-links a:hover{transform:translateY(-3px);box-shadow:var(--sh-3);color:var(--c-brand-700);border-color:#D6CDF2}
.cross-links .arrow{color:var(--c-brand-500);transition:transform .22s var(--ease)}
.cross-links a:hover .arrow{transform:translateX(4px)}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-deep);color:#fff;margin-top:88px;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:48px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;margin-bottom:14px}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:320px;margin:0}
.footer-title{font-size:14px;font-weight:700;color:var(--c-lime);letter-spacing:.02em;margin-bottom:14px}
.footer-list{list-style:none;margin:0;padding:0}
.footer-list li{margin-bottom:10px}
.footer-list a,.footer-list span{display:inline-block;font-size:14px;color:rgba(255,255,255,.68);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-list a:hover{color:var(--c-lime);transform:translateX(4px)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;border-top:1px solid rgba(255,255,255,.12);margin-top:44px;padding-top:22px;font-size:13px;color:rgba(255,255,255,.5)}

main{display:block}

/* roulang page: category2 */
/* ============ 设计令牌 ============ */
:root{
  --c-bg:#F7F5FF;
  --c-deep:#17102E;
  --c-deep-2:#221449;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEBFB;
  --c-line:#E3DDF6;
  --c-brand-700:#3B1FBF;
  --c-brand-600:#4E2AE0;
  --c-brand-500:#7A5AF8;
  --c-coral:#FF6B5A;
  --c-lime:#D8F24B;
  --c-cyan:#35D6C8;
  --c-ink:#17102E;
  --c-ink-2:#5A5478;
  --c-ink-3:#8C86A8;
  --grad-brand:linear-gradient(118deg,#4E2AE0 0%,#7A5AF8 48%,#FF6B5A 108%);
  --grad-soft:linear-gradient(118deg,#EFEBFB 0%,#FDF0EC 100%);
  --r-card:24px;
  --r-lg:32px;
  --r-img:18px;
  --sh-2:0 10px 30px -14px rgba(46,26,120,.22);
  --sh-3:0 24px 60px -24px rgba(46,26,120,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px;-webkit-text-size-adjust:100%}
html body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input{font:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:2px;border-radius:6px}
.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}

/* ============ 容器与板块 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}

.section{padding:56px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-soft{background:var(--c-surface-2)}
.section-tight{padding-top:32px}
.section-head{margin-bottom:26px;max-width:760px}
@media (min-width:1024px){.section-head{margin-bottom:44px}}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

.h1{font-size:clamp(30px,5vw,54px);line-height:1.15;font-weight:800;letter-spacing:-.01em}
.h2{font-size:clamp(23px,3vw,36px);line-height:1.25;font-weight:800;letter-spacing:-.01em}
.h3{font-size:20px;line-height:1.4;font-weight:700}
.h4{font-size:17px;line-height:1.5;font-weight:700}
.lead{font-size:16px;line-height:1.85;color:var(--c-ink-2)}
.small{font-size:14px;line-height:1.8;color:var(--c-ink-2)}
.muted{font-size:13px;line-height:1.7;color:var(--c-ink-3)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--c-brand-700);background:rgba(122,90,248,.13);border-radius:999px;padding:6px 15px}

/* ============ 九宫格纹理 ============ */
.grid-pattern{background-image:
  linear-gradient(rgba(78,42,224,.06) 1px,transparent 1px),
  linear-gradient(90deg,rgba(78,42,224,.06) 1px,transparent 1px);
  background-size:56px 56px}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;
  padding:13px 26px;font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease)}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 14px 30px -16px rgba(78,42,224,.85)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--sh-3)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--c-brand-700);border:1px solid var(--c-line);box-shadow:var(--sh-2)}
.btn-ghost:hover{border-color:var(--c-brand-600);background:var(--c-surface-2);transform:translateY(-2px)}
.btn-lime{background:var(--c-lime);color:var(--c-deep)}
.btn-lime:hover{filter:brightness(1.05);transform:translateY(-2px);box-shadow:0 18px 40px -20px rgba(216,242,75,.9)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand-600);font-weight:600;font-size:14px}
.text-link .arrow{transition:transform .2s var(--ease)}
.text-link:hover .arrow{transform:translateX(4px)}

/* ============ 徽章 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;font-size:13px;font-weight:600;
  letter-spacing:.02em;padding:5px 14px;line-height:1.6}
.badge-cat{background:rgba(122,90,248,.14);color:var(--c-brand-700)}
.badge-data{background:var(--c-lime);color:var(--c-deep)}
.badge-status{background:transparent;color:#1E9E92;border:1px solid rgba(53,214,200,.6)}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(247,245,255,.72);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease)}
.site-header.is-scrolled{background:rgba(255,255,255,.92);border-bottom-color:var(--c-line);box-shadow:var(--sh-2)}
.nav-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:72px;gap:16px}
.nav-left{display:flex;align-items:center;gap:22px}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:22px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);padding:6px 0;transition:color .2s var(--ease)}
.nav-link:hover{color:var(--c-brand-600)}
.nav-link.active{color:var(--c-ink);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:3px;border-radius:999px;background:var(--grad-brand)}
.nav-logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--c-ink);justify-self:center}
.brand-mark{width:26px;height:26px;border-radius:9px;background:var(--grad-brand);display:inline-block;
  box-shadow:0 8px 18px -8px rgba(78,42,224,.75);flex:none}
.nav-toggle{display:none;width:42px;height:42px;border-radius:14px;border:1px solid var(--c-line);background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink)}
.cta-short{display:none}

/* 移动端抽屉 */
.nav-drawer{position:fixed;left:0;right:0;top:72px;z-index:59;background:#fff;border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-2);max-height:0;overflow:hidden;padding:0 20px;
  transition:max-height .3s var(--ease),padding .3s var(--ease)}
.nav-drawer.is-open{max-height:560px;padding:10px 20px 26px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;font-size:18px;font-weight:500;
  color:var(--c-ink-2);height:56px;border-bottom:1px solid var(--c-line)}
.drawer-link.active{color:var(--c-brand-700);font-weight:700}
.drawer-link.active::after{content:"当前";font-size:12px;font-weight:600;color:var(--c-brand-600);
  background:rgba(122,90,248,.14);border-radius:999px;padding:3px 10px}
.drawer-foot{display:flex;flex-direction:column;gap:14px;padding-top:22px;align-items:flex-start}
.drawer-brand{font-size:15px;font-weight:800;color:var(--c-ink)}
.drawer-brand span{color:var(--c-brand-600)}

@media (max-width:1023px){
  .nav-left{display:none}
  .nav-right .nav-link{display:none}
  .nav-inner{grid-template-columns:auto 1fr auto}
  .nav-toggle{display:inline-flex}
  .nav-logo{font-size:17px}
  .nav-cta{padding:10px 16px;font-size:14px}
  .cta-full{display:none}
  .cta-short{display:inline}
}
@media (min-width:1024px){
  .nav-drawer{display:none}
}

/* ============ 面包屑 ============ */
.crumb-wrap{padding:20px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px;font-size:13px;color:var(--c-ink-3)}
.breadcrumb a{color:var(--c-ink-3)}
.breadcrumb a:hover{color:var(--c-brand-600)}
.breadcrumb li[aria-current]{color:var(--c-ink-2)}
.breadcrumb .sep{color:var(--c-ink-3)}

/* ============ Hero（居中浅紫型） ============ */
.hero-center{position:relative;overflow:hidden;background:var(--grad-soft);padding:34px 0 64px;text-align:center}
.hero-center::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(78,42,224,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(78,42,224,.06) 1px,transparent 1px);
  background-size:56px 56px}
.hero-center .container{position:relative;z-index:1}
.hero-center .h1{margin:20px auto 18px;max-width:900px}
.hero-lead{max-width:660px;margin:0 auto;font-size:16px;color:var(--c-ink-2)}
@media (min-width:1024px){.hero-lead{font-size:17px}}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:28px}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;max-width:720px;margin:38px auto 0}
@media (max-width:560px){.hero-stats{grid-template-columns:1fr;max-width:420px}}
.stat-chip{background:#fff;border:1px solid var(--c-line);border-radius:18px;box-shadow:var(--sh-2);
  padding:16px 12px;text-align:center}
.stat-chip b{display:block;font-size:26px;line-height:1.2;font-weight:800;color:var(--c-deep);font-variant-numeric:tabular-nums}
.stat-chip b em{font-style:normal;font-size:14px;color:var(--c-brand-600);margin-left:3px}
.stat-chip span{display:block;font-size:12.5px;color:var(--c-ink-3);margin-top:4px}
.hero-figure{margin:44px auto 0;max-width:1000px;position:relative}
.hero-figure img{width:100%;border-radius:var(--r-lg);border:1px solid rgba(255,255,255,.6);
  box-shadow:var(--sh-3);object-fit:cover}
.hero-figure .figure-badge{position:absolute;top:-14px;right:18px}

/* ============ 锚点条 ============ */
.anchor-bar{position:sticky;top:72px;z-index:40;background:rgba(247,245,255,.92);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line)}
.anchor-list{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.anchor-list::-webkit-scrollbar{display:none}
.anchor-list a{flex:none;font-size:14px;font-weight:500;color:var(--c-ink-2);background:#fff;
  border:1px solid var(--c-line);border-radius:999px;padding:8px 16px;transition:all .2s var(--ease)}
.anchor-list a:hover{color:var(--c-brand-700);border-color:var(--c-brand-500);background:var(--c-surface-2)}
.anchor-list a.is-current{background:var(--grad-brand);color:#fff;border-color:transparent}

/* ============ 卡片 ============ */
.card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-2);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#D6CCF5}
.card-pad{padding:26px}
@media (min-width:1024px){.card-pad{padding:30px}}
.card-icon{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:14px;
  background:var(--grad-brand);color:#fff;font-weight:800;font-size:15px;letter-spacing:.02em;
  box-shadow:0 12px 26px -14px rgba(78,42,224,.85)}
.card-title{margin:18px 0 10px;font-size:18px;font-weight:700;line-height:1.4}
.grid-4{display:grid;grid-template-columns:1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.grid-4{grid-template-columns:repeat(4,1fr);gap:24px}.grid-3{grid-template-columns:repeat(3,1fr);gap:24px}}

/* ============ 评分对比 ============ */
.compare-wrap{display:grid;grid-template-columns:1fr;gap:28px;align-items:start}
@media (min-width:1024px){.compare-wrap{grid-template-columns:1.35fr 1fr;gap:48px}}
.rate-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:8px 24px}
@media (min-width:1024px){.rate-card{padding:12px 32px}}
.rate-row{display:grid;grid-template-columns:1fr;gap:8px;padding:20px 0;border-bottom:1px solid var(--c-line)}
.rate-row:last-child{border-bottom:0}
@media (min-width:768px){
  .rate-row{grid-template-columns:200px 1fr 70px;align-items:center;gap:20px}
}
.rate-name{font-size:16px;font-weight:700}
.rate-tag{display:block;font-size:12.5px;font-weight:500;color:var(--c-ink-3);margin-top:2px}
.rate-track{height:10px;border-radius:999px;background:var(--c-surface-2);overflow:hidden}
.rate-fill{height:100%;border-radius:999px;background:var(--grad-brand)}
.rate-num{font-size:20px;font-weight:800;color:var(--c-deep);font-variant-numeric:tabular-nums;text-align:right}
.rate-note{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.compare-figure img{width:100%;border-radius:var(--r-img);box-shadow:var(--sh-2);object-fit:cover}
.compare-aside{margin-top:22px;background:var(--c-surface-2);border-radius:var(--r-card);padding:24px}
.compare-aside .h3{margin-bottom:12px}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding-left:32px;margin-top:8px}
.timeline::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;border-radius:2px;background:var(--c-line)}
.timeline-item{position:relative;padding-bottom:30px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{content:"";position:absolute;left:-32px;top:7px;width:14px;height:14px;border-radius:50%;
  background:var(--grad-brand);box-shadow:0 0 0 4px #fff, 0 6px 14px -6px rgba(78,42,224,.9)}
.timeline-time{font-size:13px;font-weight:700;color:var(--c-brand-700);letter-spacing:.02em}
.timeline-item h3{margin:6px 0 8px}
.timeline-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:1024px){.timeline-grid{grid-template-columns:1.4fr 1fr;gap:56px;align-items:start}}

/* ============ 反馈摘录 ============ */
.quote{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:26px;
  display:flex;flex-direction:column;gap:16px;height:100%}
.quote p{font-size:15.5px;line-height:1.85;color:var(--c-ink)}
.quote-foot{display:flex;align-items:center;gap:12px;margin-top:auto}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--grad-soft);border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;color:var(--c-brand-700);flex:none}
.quote-name{font-size:14px;font-weight:700}
.quote-role{font-size:12.5px;color:var(--c-ink-3)}

/* ============ CTA ============ */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-lg);background:var(--grad-brand);color:#fff;
  padding:36px 26px;box-shadow:var(--sh-3)}
@media (min-width:1024px){.cta-band{padding:52px 48px}}
.cta-band::after{content:"";position:absolute;inset:0;opacity:.35;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.14) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:56px 56px}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:26px}
@media (min-width:1024px){.cta-inner{grid-template-columns:5fr 7fr;gap:48px;align-items:center}}
.cta-inner .h2{color:#fff}
.cta-inner p{color:rgba(255,255,255,.86);font-size:15.5px;margin-top:12px}
.subscribe-form{display:flex;flex-direction:column;gap:12px}
@media (min-width:640px){.subscribe-form{flex-direction:row;align-items:center}}
.subscribe-form input{flex:1;min-width:0;width:100%;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.45);
  border-radius:999px;padding:14px 22px;color:#fff;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease)}
.subscribe-form input::placeholder{color:rgba(255,255,255,.72)}
.subscribe-form input:focus{outline:none;background:rgba(255,255,255,.22);border-color:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.18)}
.form-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.72)}

/* ============ FAQ ============ */
.faq-list{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:1024px){.faq-list{grid-template-columns:repeat(2,1fr);gap:18px 24px}}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:14px;box-shadow:var(--sh-2);
  overflow:hidden;transition:background .2s var(--ease),border-color .2s var(--ease)}
.faq-item[open]{background:var(--c-surface-2);border-color:#D6CCF5}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:700;line-height:1.5}
.faq-item summary::-webkit-details-marker{display:none}
.faq-plus{flex:none;width:26px;height:26px;border-radius:50%;background:#fff;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;color:var(--c-brand-600);
  transition:transform .25s var(--ease)}
.faq-item[open] .faq-plus{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px}
.faq-body p{font-size:15px;line-height:1.8;color:var(--c-ink-2)}

/* ============ 分类互链 ============ */
.link-cards{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:768px){.link-cards{grid-template-columns:repeat(3,1fr)}}
.link-card{display:flex;flex-direction:column;gap:12px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-2);padding:24px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease)}
.link-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#D6CCF5}
.link-card.is-current{background:var(--grad-soft)}
.link-card .lc-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.link-card p{font-size:14.5px;color:var(--c-ink-2);line-height:1.8}
.back-home{display:flex;justify-content:center;margin-top:30px}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-deep);color:#CFC9E6;padding:56px 0 26px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-about{font-size:14px;line-height:1.8;color:#A9A2C6;max-width:330px}
.footer-title{font-size:14px;font-weight:700;color:var(--c-lime);letter-spacing:.02em;margin-bottom:14px}
.footer-list li{margin-bottom:10px;font-size:14px;color:#B7B0D2}
.footer-list a{color:#B7B0D2;display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-list a:hover{color:var(--c-lime);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 24px;justify-content:space-between;font-size:13px;color:#8B84AA}

/* ============ 响应式微调 ============ */
@media (max-width:560px){
  .btn{padding:12px 20px;font-size:14.5px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .rate-num{text-align:left}
  .cta-inner{gap:22px}
}