/* roulang page: index */
:root{
  --ink-900:#0C0B18;
  --ink-800:#16142A;
  --ink-700:#221F3B;
  --paper:#F6F5FF;
  --surface:#FFFFFF;
  --border:#E7E4F5;
  --primary:#6C2BD9;
  --primary-600:#5A21BC;
  --primary-soft:rgba(108,43,217,.12);
  --accent:#00D9B8;
  --signal:#FFC53D;
  --text-1:#12101F;
  --text-2:#55516E;
  --text-inv:#EDEBFA;
  --text-inv-2:#A9A4C7;
  --danger:#E5484D;
  --r-card:18px;
  --r-input:12px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(12,11,24,.06);
  --s2:0 8px 24px rgba(12,11,24,.08);
  --s3:0 16px 40px rgba(108,43,217,.18);
  --nav-h:56px;
}
@media (min-width:768px){:root{--nav-h:72px;}}

*,*::before,*::after{box-sizing:border-box;}
.site-body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--paper);
  color:var(--text-1);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  padding-bottom:76px;
}
@media (min-width:768px){.site-body{padding-bottom:0;}}
.num{font-family:Inter,"Segoe UI",system-ui,sans-serif;font-variant-numeric:tabular-nums;font-weight:700;}

h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.25;font-weight:800;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 32px;}}

.section{padding:64px 0;}
@media (min-width:1024px){.section{padding:104px 0;}}
.section-kicker{font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--primary);margin-bottom:12px;}
.section-title{font-size:24px;}
@media (min-width:1024px){.section-title{font-size:32px;}}
.section-lead{margin-top:14px;color:var(--text-2);max-width:640px;}

/* ===== 顶部导航 ===== */
.site-header{position:sticky;top:0;z-index:50;background:transparent;transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;}
.site-header.is-scrolled{background:rgba(12,11,24,.95);border-bottom:1px solid var(--ink-700);box-shadow:var(--s2);}
.nav-wrap{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16px;letter-spacing:-.01em;white-space:nowrap;}
@media (min-width:1024px){.brand{font-size:18px;}}
.brand-mark{width:34px;height:34px;flex:none;border-radius:11px;background:linear-gradient(135deg,var(--primary) 0%,#8B57F0 55%,var(--accent) 100%);display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(108,43,217,.35);}
.brand-mark svg{width:20px;height:20px;}
.nav-links{display:none;align-items:center;gap:2px;}
@media (min-width:1024px){.nav-links{display:flex;}}
.nav-link{position:relative;display:flex;align-items:center;height:var(--nav-h);padding:0 14px;font-size:15px;color:var(--text-inv-2);transition:color .2s ease;}
.nav-link:hover{color:#fff;}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;background:var(--accent);}
.nav-actions{display:none;align-items:center;gap:16px;}
@media (min-width:1024px){.nav-actions{display:flex;}}
.nav-text-link{font-size:15px;font-weight:600;color:var(--text-inv-2);display:inline-flex;align-items:center;gap:6px;transition:color .2s ease;}
.nav-text-link:hover{color:var(--accent);}
.nav-cta{height:44px;padding:0 22px;font-size:15px;}
.menu-btn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;cursor:pointer;transition:background .2s ease;}
.menu-btn:hover{background:rgba(255,255,255,.14);}
@media (min-width:1024px){.menu-btn{display:none;}}
.mobile-menu{display:none;background:rgba(12,11,24,.98);border-top:1px solid var(--ink-700);border-bottom:1px solid var(--ink-700);}
.mobile-menu.is-open{display:block;}
.mobile-menu ul{padding:12px 20px 20px;}
.mobile-menu a{display:flex;align-items:center;justify-content:space-between;padding:14px 4px;color:var(--text-inv);font-size:16px;font-weight:600;border-bottom:1px solid var(--ink-700);}
.mobile-menu li:last-child a{border-bottom:0;}
.mobile-menu a span{color:var(--text-inv-2);font-size:13px;font-weight:400;}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:50px;padding:0 28px;border-radius:var(--r-pill);font-size:16px;font-weight:700;border:1px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;}
.btn svg{width:18px;height:18px;flex:none;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 24px rgba(108,43,217,.28);}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-2px);box-shadow:var(--s3);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--s1);}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px);box-shadow:var(--s2);}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-weight:700;font-size:16px;background:none;border:0;padding:0;cursor:pointer;}
.btn-ghost svg{width:18px;height:18px;transition:transform .2s ease;}
.btn-ghost:hover svg{transform:translateX(4px);}
.btn:disabled,.btn[disabled]{opacity:.4;cursor:not-allowed;}

.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);font-size:13px;font-weight:600;background:var(--primary-soft);color:var(--primary);}
.badge-accent{background:rgba(0,217,184,.12);color:#0B8C7A;}
.badge:empty{display:none;}

/* ===== Hero ===== */
.hero{position:relative;margin-top:calc(var(--nav-h) * -1);padding-top:calc(var(--nav-h) + 40px);padding-bottom:64px;background:var(--ink-900) url('/assets/images/backpic/back-1.png') center/cover no-repeat;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(12,11,24,.94) 0%,rgba(12,11,24,.60) 52%,rgba(12,11,24,.82) 100%);}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent 5%,var(--accent) 50%,transparent 95%);}
.hero-inner{position:relative;z-index:1;}
@media (min-width:1024px){.hero{padding-bottom:104px;padding-top:calc(var(--nav-h) + 64px);}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px;}}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);background:rgba(0,217,184,.12);border:1px solid rgba(0,217,184,.3);color:var(--accent);font-size:13px;font-weight:700;}
.hero-title{margin-top:22px;font-size:30px;color:#fff;letter-spacing:-.02em;line-height:1.3;}
@media (min-width:1024px){.hero-title{font-size:44px;}}
.hero-title em{font-style:normal;color:var(--accent);}
.hero-sub{margin-top:20px;color:var(--text-inv-2);font-size:17px;max-width:560px;}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;align-items:center;gap:20px;}
.hero-stats{margin-top:40px;display:flex;flex-wrap:wrap;gap:12px 32px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);}
.hero-stat{display:flex;flex-direction:column;gap:2px;}
.hero-stat b{font-size:22px;color:#fff;font-variant-numeric:tabular-nums;}
.hero-stat span{font-size:13px;color:var(--text-inv-2);}
.hero-media{position:relative;border-radius:22px;overflow:hidden;border:1px solid rgba(255,255,255,.12);box-shadow:0 30px 70px rgba(0,0,0,.5);}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,11,24,0) 45%,rgba(12,11,24,.75) 100%);}
.hero-media-tag{position:absolute;left:20px;bottom:20px;z-index:2;display:flex;align-items:center;gap:10px;color:#fff;font-size:14px;font-weight:600;}
.hero-media-tag i{width:10px;height:10px;border-radius:50%;background:var(--accent);display:inline-block;box-shadow:0 0 0 4px rgba(0,217,184,.2);}

/* ===== 数据带 ===== */
.stats-strip{background:var(--surface);border-bottom:1px solid var(--border);}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);}
@media (min-width:1024px){.stats-grid{grid-template-columns:repeat(4,1fr);}}
.stat-item{padding:34px 20px;border-right:1px solid var(--border);border-bottom:1px solid var(--border);text-align:center;}
@media (min-width:1024px){.stat-item{border-bottom:0;}}
.stat-item:nth-child(2n){border-right:0;}
@media (min-width:1024px){.stat-item:nth-child(2n){border-right:1px solid var(--border);}.stat-item:last-child{border-right:0;}}
.stat-num{font-size:36px;color:var(--primary);line-height:1.1;}
@media (min-width:1024px){.stat-num{font-size:46px;}}
.stat-num sup{font-size:15px;font-weight:600;color:var(--text-2);margin-left:4px;}
.stat-label{margin-top:8px;font-size:13px;color:var(--text-2);}

/* ===== 痛点区 ===== */
.pain-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:1024px){.pain-grid{grid-template-columns:5fr 7fr;gap:64px;}}
.pain-list{display:grid;gap:16px;}
.pain-item{display:grid;grid-template-columns:52px 1fr;gap:18px;align-items:start;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--s1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.pain-item:hover{transform:translateY(-4px);box-shadow:var(--s2);border-color:rgba(0,217,184,.45);}
.pain-idx{width:44px;height:44px;border-radius:14px;background:var(--signal);color:#3A2A00;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800;}
.pain-item h3{font-size:19px;}
.pain-item p{margin-top:6px;color:var(--text-2);font-size:15px;}

/* ===== 方案区 ===== */
.solution-block{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;}
@media (min-width:1024px){.solution-block{grid-template-columns:7fr 5fr;gap:64px;}.solution-block.reverse{grid-template-columns:5fr 7fr;}}
.solution-block + .solution-block{margin-top:64px;}
@media (min-width:1024px){.solution-block + .solution-block{margin-top:96px;}}
.solution-block.reverse .solution-media{order:-1;}
@media (min-width:1024px){.solution-block.reverse .solution-media{order:-1;}}
.solution-media{border-radius:22px;overflow:hidden;border:1px solid var(--border);box-shadow:var(--s2);background:var(--ink-800);}
.solution-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.solution-title{font-size:22px;}
@media (min-width:1024px){.solution-title{font-size:28px;}}
.solution-text{margin-top:16px;color:var(--text-2);}
.check-list{margin-top:24px;display:grid;gap:14px;}
.check-list li{display:grid;grid-template-columns:24px 1fr;gap:12px;font-size:16px;color:var(--text-1);}
.check-list svg{width:22px;height:22px;color:var(--accent);margin-top:4px;}
.solution-link{margin-top:26px;}

/* ===== 成果区 ===== */
.result-grid{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1024px){.result-grid{grid-template-columns:8fr 4fr;gap:32px;}}
.case-cards{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:640px){.case-cards{grid-template-columns:repeat(2,1fr);}}
.case-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--s1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--s3);border-color:rgba(0,217,184,.5);}
.case-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.case-body{padding:24px;}
.case-body h3{font-size:19px;}
.case-body p{margin-top:10px;color:var(--text-2);font-size:15px;}
.case-data{margin-top:16px;display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);background:rgba(255,197,61,.16);color:#8A6100;font-size:13px;font-weight:700;}
.side-metrics{background:var(--ink-900);border-radius:var(--r-card);padding:28px;color:var(--text-inv);display:grid;gap:24px;align-content:start;box-shadow:var(--s2);}
.side-metrics h3{font-size:17px;color:#fff;}
.side-metric{border-top:1px solid var(--ink-700);padding-top:20px;}
.side-metric:first-of-type{border-top:0;padding-top:0;}
.side-metric b{display:block;font-size:40px;color:var(--accent);line-height:1.1;font-variant-numeric:tabular-nums;}
.side-metric span{display:block;margin-top:6px;font-size:13px;color:var(--text-inv-2);}

/* ===== 证言 ===== */
.quote-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-top:36px;}
@media (min-width:1024px){.quote-grid{grid-template-columns:repeat(2,1fr);gap:32px;}}
.quote-card{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);padding:32px 28px 28px;box-shadow:var(--s1);}
.quote-card::before{content:"";position:absolute;top:26px;left:26px;width:40px;height:32px;background:var(--primary);opacity:.18;border-radius:6px;}
.quote-text{position:relative;margin-top:36px;font-size:18px;color:var(--text-1);line-height:1.8;}
.quote-person{margin-top:24px;display:flex;align-items:center;gap:14px;}
.avatar{width:40px;height:40px;border-radius:12px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;flex:none;}
.quote-person b{display:block;font-size:15px;}
.quote-person span{font-size:13px;color:var(--text-2);}

/* ===== 最新信息 CMS ===== */
.cms-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.cms-grid{margin-top:36px;display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:640px){.cms-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.cms-grid{grid-template-columns:repeat(3,1fr);}}
.cms-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--s1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;}
.cms-card:hover{transform:translateY(-4px);box-shadow:var(--s3);border-color:rgba(0,217,184,.5);}
.cms-thumb{background:var(--ink-800);aspect-ratio:16/9;overflow:hidden;}
.cms-thumb img{width:100%;height:100%;object-fit:cover;}
.cms-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.cms-title{font-size:19px;line-height:1.45;}
.cms-title a{color:var(--text-1);transition:color .2s ease;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-card:hover .cms-title a{color:var(--primary);}
.cms-sum{margin:0;color:var(--text-2);font-size:15px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-sum:empty{display:none;}
.cms-meta{margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--border);}
.cms-time{font-size:13px;color:var(--text-2);font-variant-numeric:tabular-nums;}
.cms-time:empty{display:none;}
.cms-more{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--primary);}
.cms-more svg{width:16px;height:16px;transition:transform .2s ease;}
.cms-more:hover svg{transform:translateX(3px);}
@media (min-width:1024px){
  .cms-card:first-child{grid-column:span 2;flex-direction:row;}
  .cms-card:first-child .cms-thumb{width:52%;aspect-ratio:auto;min-height:280px;flex:none;}
  .cms-card:first-child .cms-body{padding:30px 32px;}
  .cms-card:first-child .cms-title{font-size:24px;}
  .cms-card:first-child .cms-sum{-webkit-line-clamp:3;}
}
.cms-empty{grid-column:1 / -1;border:1px dashed var(--border);border-radius:var(--r-card);padding:52px 24px;text-align:center;background:rgba(255,255,255,.6);}
.cms-empty svg{width:44px;height:44px;color:var(--primary);margin:0 auto 14px;}
.cms-empty p{color:var(--text-2);font-size:15px;}

/* ===== FAQ ===== */
.faq-wrap{max-width:860px;margin:36px auto 0;display:grid;gap:14px;}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:16px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item.is-open{border-color:rgba(108,43,217,.35);box-shadow:var(--s2);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;background:none;border:0;padding:20px 24px;font-size:17px;font-weight:700;color:var(--text-1);cursor:pointer;}
.faq-q svg{width:20px;height:20px;flex:none;color:var(--primary);transition:transform .3s ease;}
.faq-item.is-open .faq-q svg{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a p{padding:0 24px 22px;color:var(--text-2);font-size:16px;}

/* ===== 最终 CTA ===== */
.cta-section{background:var(--ink-900);position:relative;overflow:hidden;}
.cta-section::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;opacity:.22;}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:1024px){.cta-inner{grid-template-columns:5fr 7fr;gap:64px;align-items:center;}}
.cta-copy h2{color:#fff;font-size:24px;}
@media (min-width:1024px){.cta-copy h2{font-size:32px;}}
.cta-copy p{margin-top:16px;color:var(--text-inv-2);}
.cta-points{margin-top:26px;display:grid;gap:12px;}
.cta-points li{display:flex;align-items:flex-start;gap:10px;color:var(--text-inv);font-size:15px;}
.cta-points svg{width:20px;height:20px;color:var(--accent);flex:none;margin-top:4px;}
.form-card{background:var(--surface);border-radius:22px;padding:28px;box-shadow:0 24px 60px rgba(0,0,0,.35);}
@media (min-width:1024px){.form-card{padding:36px;}}
.form-grid{display:grid;gap:18px;}
@media (min-width:768px){.form-grid.two{grid-template-columns:1fr 1fr;}}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;font-weight:600;color:var(--text-2);}
.field input,.field textarea{width:100%;border:1px solid var(--border);border-radius:var(--r-input);background:#fff;color:var(--text-1);font-size:16px;font-family:inherit;padding:0 16px;height:48px;transition:border-color .2s ease,box-shadow .2s ease;}
.field textarea{height:auto;min-height:104px;padding:12px 16px;line-height:1.7;resize:vertical;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft);}
.checkbox{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-2);}
.checkbox input{width:18px;height:18px;margin-top:4px;accent-color:var(--primary);}
.form-tip{font-size:13px;color:var(--text-2);margin-top:12px;}
.form-msg{margin-top:14px;font-size:14px;font-weight:600;color:var(--accent);display:none;}
.form-msg.show{display:block;}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink-900);color:var(--text-inv);border-top:1px solid var(--ink-700);}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding:64px 0 40px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1.4fr 1.2fr;gap:48px;padding:80px 0 52px;}}
.footer-brand p{margin-top:18px;color:var(--text-inv-2);font-size:14px;max-width:320px;}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-links{display:grid;gap:12px;}
.footer-links a{color:var(--text-inv-2);font-size:14px;transition:color .2s ease;}
.footer-links a:hover{color:#fff;}
.footer-about p{color:var(--text-inv-2);font-size:14px;}
.footer-contact li{color:var(--text-inv-2);font-size:14px;margin-bottom:12px;}
.footer-contact b{color:var(--text-inv);font-weight:600;}
.footer-bottom{border-top:1px solid var(--ink-700);padding:22px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;}
.footer-bottom p{font-size:13px;color:var(--text-inv-2);}
.to-top{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;border-radius:var(--r-pill);border:1px solid var(--ink-700);background:transparent;color:var(--text-inv);font-size:13px;font-weight:600;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease;}
.to-top:hover{background:var(--primary);border-color:var(--primary);color:#fff;}
.to-top svg{width:16px;height:16px;}

/* ===== 移动底部 Tab ===== */
.mobile-tabs{position:fixed;left:0;right:0;bottom:0;z-index:60;display:grid;grid-template-columns:repeat(4,1fr);height:60px;padding-bottom:env(safe-area-inset-bottom);background:rgba(12,11,24,.97);border-top:1px solid var(--ink-700);backdrop-filter:blur(8px);}
@media (min-width:768px){.mobile-tabs{display:none;}}
.tab-item{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:#6F6A8D;font-size:11px;transition:color .2s ease;}
.tab-item svg{width:22px;height:22px;transition:transform .2s ease;}
.tab-item:hover{color:var(--text-inv-2);}
.tab-item.is-active{color:var(--accent);}
.tab-item.is-active svg{transform:translateY(-2px);}
.tab-item.is-active::before{content:"";position:absolute;top:0;left:26%;right:26%;height:3px;border-radius:0 0 3px 3px;background:var(--accent);}

/* roulang page: article */
:root{
  --ink-900:#0C0B18;
  --ink-800:#16142A;
  --ink-700:#221F3B;
  --paper:#F6F5FF;
  --surface:#FFFFFF;
  --border:#E7E4F5;
  --primary:#6C2BD9;
  --primary-600:#5A21BC;
  --primary-soft:rgba(108,43,217,.12);
  --accent:#00D9B8;
  --signal:#FFC53D;
  --text-1:#12101F;
  --text-2:#55516E;
  --text-inv:#EDEBFA;
  --text-inv-2:#A9A4C7;
  --danger:#E5484D;
  --r-card:18px;
  --r-input:12px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(12,11,24,.06);
  --s2:0 8px 24px rgba(12,11,24,.08);
  --s3:0 16px 40px rgba(108,43,217,.18);
  --sec:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
body h1,body h2,body h3,body h4,body p,body ul,body ol,body figure,body blockquote{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
.num{font-variant-numeric:tabular-nums;font-weight:700}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--sec) 0}
.section-tight{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:700;letter-spacing:.02em;
}
.section-title{font-size:32px;line-height:1.25;font-weight:800;letter-spacing:-.01em;color:var(--text-1)}
.section-sub{margin-top:12px;color:var(--text-2);font-size:16px;line-height:1.9;max-width:720px}

/* ---------- 阅读进度 ---------- */
.read-progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--accent);z-index:90;transition:width .12s linear}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(12,11,24,.94);
  border-bottom:1px solid rgba(255,255,255,.06);
  backdrop-filter:blur(12px);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(12,11,24,.98);box-shadow:var(--s2);border-bottom-color:var(--ink-700)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{
  width:36px;height:36px;border-radius:12px;flex:none;
  background:linear-gradient(135deg,var(--primary),#8B5CF6);
  display:grid;place-items:center;
  box-shadow:0 6px 16px rgba(108,43,217,.4);
}
.brand-mark svg{width:20px;height:20px}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;
  color:var(--text-inv-2);font-size:15px;font-weight:500;border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:16px}
.link-ghost{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent);font-size:15px;font-weight:600;padding:8px 4px;
  transition:color .2s ease;
}
.link-ghost svg{width:16px;height:16px;transition:transform .2s ease}
.link-ghost:hover{color:#5ef0d6}
.link-ghost:hover svg{transform:translateX(3px)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:16px;font-weight:700;letter-spacing:.01em;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(108,43,217,.28)}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-2px);box-shadow:var(--s3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(108,43,217,.22)}
.btn-outline{border:1px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px);box-shadow:var(--s2)}
.btn-outline-light{border:1px solid rgba(255,255,255,.35);color:#fff;background:transparent}
.btn-outline-light:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-sm{min-height:42px;padding:0 20px;font-size:15px}
.btn[disabled]{opacity:.4;pointer-events:none}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-inv-2)}
.breadcrumb a{color:var(--text-inv-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb svg{width:14px;height:14px;opacity:.7;flex:none}
.breadcrumb .crumb-current{
  color:#fff;font-weight:700;max-width:12em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- 文章页头 ---------- */
.article-hero{
  position:relative;padding:56px 0 64px;
  background-image:linear-gradient(180deg,rgba(12,11,24,.86),rgba(12,11,24,.95)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  color:var(--text-inv);overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  background:linear-gradient(90deg,var(--accent),rgba(0,217,184,.15) 60%,transparent);
}
.article-hero .hero-inner{max-width:860px;margin-top:26px}
.article-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(0,217,184,.14);color:var(--accent);
  font-size:13px;font-weight:700;
}
.article-title{
  margin-top:18px;
  font-size:44px;line-height:1.25;font-weight:800;letter-spacing:-.01em;color:#fff;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:22px;font-size:13px;color:var(--text-inv-2)}
.article-meta span{display:inline-flex;align-items:center;gap:8px}
.article-meta svg{width:15px;height:15px;color:var(--accent)}
.article-meta .stamp{color:var(--signal)}

/* ---------- 文章布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start}
.article-main{min-width:0}
.article-cover{
  border-radius:20px;overflow:hidden;background:var(--ink-800);
  box-shadow:var(--s2);margin-bottom:36px;
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-body{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:40px;box-shadow:var(--s1);max-width:100%;
  font-size:17px;line-height:1.9;color:var(--text-1);
}
.article-body>:first-child{margin-top:0}
.article-body p{margin:0 0 20px}
.article-body h2{
  position:relative;font-size:24px;line-height:1.4;font-weight:800;letter-spacing:-.01em;
  margin:40px 0 18px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--accent);
}
.article-body h3{font-size:20px;line-height:1.5;font-weight:700;margin:32px 0 14px}
.article-body h4{font-size:17px;font-weight:700;margin:24px 0 12px;color:var(--text-2)}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--primary-600)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:8px 0;line-height:1.8}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;border-left:3px solid var(--primary);
  background:var(--paper);border-radius:0 12px 12px 0;color:var(--text-2);
}
.article-body img{border-radius:12px;margin:24px 0;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-2);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th{background:var(--ink-900);color:#fff;text-align:left;padding:12px 16px;font-weight:600}
.article-body td{padding:12px 16px;border-bottom:1px solid var(--border)}
.article-body tbody tr:nth-child(odd){background:var(--paper)}
.article-body tbody tr:nth-child(even){background:#fff}
.article-body pre{
  margin:24px 0;padding:18px 20px;border-radius:12px;overflow:auto;
  background:var(--ink-900);color:var(--accent);font-size:14px;line-height:1.7;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.article-body hr{border:0;border-top:1px solid var(--border);margin:32px 0}
.article-body strong{font-weight:700}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--border);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;background:var(--paper);
}
.empty-state svg{width:54px;height:54px;color:var(--primary);opacity:.55;margin:0 auto 18px}
.empty-title{font-size:22px;font-weight:800;color:var(--text-1);margin-bottom:10px}
.empty-text{color:var(--text-2);font-size:15px;margin-bottom:24px}

/* ---------- 侧栏 ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:24px}
.widget{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--s1);
}
.widget-title{
  position:relative;font-size:15px;font-weight:800;color:var(--text-1);
  padding-left:12px;margin-bottom:18px;
}
.widget-title::before{
  content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;border-radius:2px;background:var(--primary);
}
.widget-list{list-style:none;padding:0;margin:0}
.widget-list li+li{margin-top:4px}
.widget-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  min-height:44px;padding:10px 12px;border-radius:12px;
  color:var(--text-2);font-size:15px;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.widget-list a:hover{background:var(--primary-soft);color:var(--primary)}
.widget-list svg{width:16px;height:16px;flex:none;opacity:.7}
.mini-card{display:flex;gap:12px;padding:12px;border-radius:14px;transition:background .2s ease,transform .2s ease}
.mini-card:hover{background:var(--paper);transform:translateX(3px)}
.mini-index{
  width:32px;height:32px;flex:none;border-radius:10px;background:var(--signal);
  color:#3A2A00;font-size:14px;font-weight:800;
  display:grid;place-items:center;
  font-variant-numeric:tabular-nums;
}
.mini-body strong{display:block;font-size:15px;font-weight:700;color:var(--text-1);line-height:1.5}
.mini-body span{display:block;font-size:13px;color:var(--text-2);margin-top:4px;line-height:1.6}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:var(--r-pill);
  background:var(--paper);border:1px solid var(--border);color:var(--text-2);
  font-size:13px;font-weight:500;transition:.2s ease;
}
.tag:hover{border-color:var(--accent);color:var(--primary);background:#fff}
.sidebar-cta{
  background:linear-gradient(150deg,var(--ink-900),var(--ink-800));
  border-radius:var(--r-card);padding:24px;color:var(--text-inv);border:1px solid var(--ink-700);
}
.sidebar-cta strong{display:block;font-size:16px;font-weight:800;color:#fff;margin-bottom:8px}
.sidebar-cta p{font-size:13px;color:var(--text-inv-2);line-height:1.8;margin-bottom:18px}

/* ---------- 文末 ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.post-nav a{
  display:flex;flex-direction:column;gap:6px;
  padding:22px 24px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--border);box-shadow:var(--s1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-nav a:hover{transform:translateY(-3px);box-shadow:var(--s3);border-color:rgba(0,217,184,.45)}
.post-nav .label{font-size:13px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px}
.post-nav .label svg{width:15px;height:15px;color:var(--primary)}
.post-nav .value{font-size:17px;font-weight:700;color:var(--text-1)}
.post-nav .align-end{text-align:right;align-items:flex-end}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:36px}
.related-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--s1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--s3);border-color:rgba(0,217,184,.45)}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.related-card .body{padding:20px 22px 24px}
.related-card h3{font-size:17px;font-weight:700;line-height:1.5;color:var(--text-1);transition:color .2s ease}
.related-card:hover h3{color:var(--primary)}
.related-card p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.75}
.related-card .more{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:14px;font-weight:700;color:var(--accent);
}
.related-card .more svg{width:16px;height:16px;transition:transform .2s ease}
.related-card:hover .more svg{transform:translateX(3px)}

.back-row{margin-top:36px;display:flex;justify-content:center}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:36px auto 0;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--s1);overflow:hidden;transition:border-color .2s ease}
.faq-item.is-open{border-color:rgba(0,217,184,.5)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:17px;font-weight:700;color:var(--text-1);
  min-height:44px;
}
.faq-q svg{width:20px;height:20px;flex:none;color:var(--primary);transition:transform .28s ease}
.faq-item.is-open .faq-q svg{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 24px 22px;color:var(--text-2);font-size:16px;line-height:1.9}

/* ---------- CTA ---------- */
.cta-section{padding-bottom:var(--sec)}
.cta-card{
  display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center;
  padding:48px;border-radius:24px;
  background-image:linear-gradient(120deg,rgba(12,11,24,.94),rgba(34,31,59,.92)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  border:1px solid var(--ink-700);
}
.cta-copy h2{font-size:30px;line-height:1.3;font-weight:800;color:#fff;letter-spacing:-.01em}
.cta-copy p{margin-top:14px;color:var(--text-inv-2);font-size:16px;line-height:1.9}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:var(--text-inv-2);border-top:1px solid var(--ink-700);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1.1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.9;color:var(--text-inv-2);max-width:320px}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0}
.footer-links li+li,.footer-contact li+li{margin-top:10px}
.footer-links a{font-size:14px;color:var(--text-inv-2);transition:color .2s ease}
.footer-links a:hover{color:#fff}
.footer-contact li{font-size:14px;line-height:1.8}
.footer-contact b{color:var(--text-inv);font-weight:600}
.footer-about p{font-size:14px;line-height:1.9;color:var(--text-inv-2)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--ink-700);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-inv-2)}
.to-top{
  display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.2);color:var(--text-inv);
  font-size:13px;font-weight:600;transition:.2s ease;
}
.to-top svg{width:15px;height:15px}
.to-top:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  background:rgba(12,11,24,.98);border-top:1px solid var(--ink-700);
  padding-bottom:env(safe-area-inset-bottom);
  backdrop-filter:blur(12px);
}
.mobile-tab-bar a{
  position:relative;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;min-height:60px;padding:8px 4px;color:#8B86A8;font-size:11px;font-weight:500;
  transition:color .2s ease;
}
.mobile-tab-bar a svg{width:22px;height:22px;transition:transform .2s ease}
.mobile-tab-bar a.is-active{color:var(--accent)}
.mobile-tab-bar a.is-active svg{transform:translateY(-2px)}
.mobile-tab-bar a.is-active::before{
  content:"";position:absolute;top:0;left:22%;right:22%;height:3px;border-radius:0 0 3px 3px;background:var(--accent);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--sec:72px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .sidebar{position:static;top:auto}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-card{grid-template-columns:1fr;padding:40px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-actions .link-ghost{display:none}
  .nav-bar{height:56px}
  .mobile-tab-bar{display:flex}
  body{padding-bottom:76px}
  .article-hero{padding:36px 0 48px}
  .article-title{font-size:32px}
}
@media (max-width:767px){
  .article-body{padding:26px 20px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .post-nav .align-end{text-align:left;align-items:flex-start}
  .section-title{font-size:26px}
  .cta-copy h2{font-size:24px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  :root{--sec:64px}
  body{font-size:16px}
  .article-title{font-size:30px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:19px}
  .footer-grid{grid-template-columns:1fr}
  .cta-card{padding:32px 22px}
  .cta-actions .btn{width:100%}
}

/* roulang page: category1 */
:root{
  --ink-900:#0C0B18;
  --ink-800:#16142A;
  --ink-700:#221F3B;
  --paper:#F6F5FF;
  --surface:#FFFFFF;
  --border:#E7E4F5;
  --primary:#6C2BD9;
  --primary-600:#5A21BC;
  --primary-soft:rgba(108,43,217,.12);
  --accent:#00D9B8;
  --signal:#FFC53D;
  --text-1:#12101F;
  --text-2:#55516E;
  --text-inv:#EDEBFA;
  --text-inv-2:#A9A4C7;
  --danger:#E5484D;
  --r-card:18px;
  --r-input:12px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(12,11,24,.06);
  --s2:0 8px 24px rgba(12,11,24,.08);
  --s3:0 16px 40px rgba(108,43,217,.18);
  --nav-h:72px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:150px}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.9;
  color:var(--text-1);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{font-weight:800;line-height:1.25;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- Header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:60;height:56px;
  display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(12,11,24,.72),rgba(12,11,24,0));
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(12,11,24,.95);
  border-bottom:1px solid var(--ink-700);
  box-shadow:var(--s2);
  backdrop-filter:saturate(140%) blur(10px);
}
@media (min-width:1024px){.site-header{height:var(--nav-h)}}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--text-inv);letter-spacing:-.01em;white-space:nowrap}
.brand-mark{
  width:34px;height:34px;border-radius:12px;display:grid;place-items:center;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary),#8B5CF6);
  box-shadow:0 6px 18px rgba(108,43,217,.45);
}
.brand-mark svg{width:20px;height:20px}
.nav-links{display:none;align-items:center;gap:4px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;
  font-size:15px;color:var(--text-inv-2);border-radius:var(--r-pill);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-link.is-active{color:#fff;font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--accent);border-radius:2px;
}
.header-actions{display:none;align-items:center;gap:14px}
@media (min-width:1024px){.header-actions{display:flex}}
.header-link{font-size:14px;color:var(--text-inv-2);transition:color .2s ease}
.header-link:hover{color:#fff}
.menu-btn{
  display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
  color:var(--text-inv);border:1px solid rgba(255,255,255,.14);
}
@media (min-width:1024px){.menu-btn{display:none}}
.drawer{
  position:fixed;top:56px;left:0;right:0;z-index:59;
  background:rgba(12,11,24,.98);border-bottom:1px solid var(--ink-700);
  padding:12px 20px 22px;
  display:none;
}
.drawer.is-open{display:block}
.drawer a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:16px;color:var(--text-inv-2);border-bottom:1px solid var(--ink-700);
}
.drawer a:last-of-type{border-bottom:0}
.drawer a.is-active{color:#fff;font-weight:700}
.drawer .drawer-cta{margin-top:16px;width:100%}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn svg{width:18px;height:18px;flex:0 0 auto}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(108,43,217,.28)}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-2px);box-shadow:var(--s3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 3px 10px rgba(108,43,217,.24)}
.btn-outline{border:1px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px);box-shadow:var(--s2)}
.btn-ghost{color:var(--accent);padding:0 6px;height:44px;font-weight:700}
.btn-ghost:hover{color:#fff;transform:translateX(2px)}
.btn-ghost.on-light{color:var(--primary)}
.btn-ghost.on-light:hover{color:var(--primary-600)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:700;line-height:1.4;
  background:var(--primary-soft);color:var(--primary);
}
.badge-accent{background:rgba(0,217,184,.14);color:#00806E}
.badge-signal{background:rgba(255,197,61,.2);color:#8A5B00}
.badge-dark{background:rgba(255,255,255,.12);color:var(--accent)}

/* ---------- Page banner ---------- */
.page-banner{
  position:relative;overflow:hidden;
  padding:96px 0 48px;
  background-image:linear-gradient(180deg,rgba(12,11,24,.72),rgba(12,11,24,.62)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  color:var(--text-inv);
}
@media (min-width:1024px){.page-banner{padding:150px 0 72px}}
.page-banner::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent),transparent);
  transform:skewY(-1.2deg);
}
.page-banner .grid-lines{
  position:absolute;inset:0;pointer-events:none;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.22) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.22) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 20% 30%,#000,transparent 70%);
  -webkit-mask-image:radial-gradient(circle at 20% 30%,#000,transparent 70%);
}
.breadcrumb{position:relative;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-inv-2);margin-bottom:22px}
.breadcrumb a{transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .crumb-current{color:#fff;font-weight:700;max-width:12em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.breadcrumb svg{width:14px;height:14px;opacity:.7}
.banner-inner{position:relative;display:grid;gap:28px}
@media (min-width:1024px){.banner-inner{grid-template-columns:8fr 4fr;align-items:end}}
.page-banner h1{font-size:30px;color:#fff;max-width:16em}
@media (min-width:1024px){.page-banner h1{font-size:44px}}
.page-banner .lead{margin-top:16px;font-size:17px;color:var(--text-inv-2);max-width:34em;line-height:1.9}
.banner-metrics{display:flex;flex-wrap:wrap;gap:22px 32px;margin-top:26px}
.banner-metrics div{min-width:96px}
.banner-metrics b{display:block;font-family:var(--font-num);font-size:28px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums}
.banner-metrics span{font-size:13px;color:var(--text-inv-2)}
.banner-side{
  border:1px solid rgba(255,255,255,.14);background:rgba(22,20,42,.72);
  border-radius:var(--r-card);padding:24px;backdrop-filter:blur(6px);
}
.banner-side h2{font-size:16px;color:#fff;font-weight:800;margin-bottom:12px}
.banner-side li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-inv-2);padding:7px 0;line-height:1.7}
.banner-side li svg{width:16px;height:16px;flex:0 0 auto;margin-top:5px;color:var(--accent)}

/* ---------- Anchor bar ---------- */
.anchor-bar{
  position:sticky;top:56px;z-index:40;
  background:rgba(246,245,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
@media (min-width:1024px){.anchor-bar{top:var(--nav-h)}}
.anchor-track{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
.anchor-track::-webkit-scrollbar{display:none}
.anchor-pill{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 16px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--text-2);
  background:var(--surface);border:1px solid var(--border);
  transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease;
}
.anchor-pill:hover{color:var(--primary);border-color:rgba(0,217,184,.6);transform:translateY(-1px)}
.anchor-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* ---------- Content layout ---------- */
.main-wrap{padding:56px 0 0}
@media (min-width:1024px){.main-wrap{padding:88px 0 0}}
.layout{display:grid;gap:32px}
@media (min-width:1024px){.layout{grid-template-columns:260px minmax(0,1fr);gap:48px}}
.side-index{display:none}
@media (min-width:1024px){
  .side-index{
    display:block;position:sticky;top:calc(var(--nav-h) + 88px);
    align-self:start;
    background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
    padding:24px;box-shadow:var(--s1);
  }
}
.side-index h2{font-size:15px;font-weight:800;margin-bottom:14px}
.side-index a{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;
  font-size:14px;color:var(--text-2);transition:background .2s ease,color .2s ease;
}
.side-index a .dot{width:8px;height:8px;border-radius:50%;background:var(--border);transition:background .2s ease,transform .2s ease;flex:0 0 auto}
.side-index a:hover{background:var(--paper);color:var(--primary)}
.side-index a:hover .dot{background:var(--accent);transform:scale(1.2)}
.side-note{margin-top:18px;padding-top:18px;border-top:1px solid var(--border);font-size:13px;color:var(--text-2);line-height:1.8}

.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);padding:24px;box-shadow:var(--s1)}
@media (min-width:1024px){.panel{padding:28px}}

.content-section{margin-bottom:56px}
@media (min-width:1024px){.content-section{margin-bottom:72px}}
.content-section:last-child{margin-bottom:0}
.section-head{margin-bottom:22px}
.section-head h2{font-size:24px;margin-top:12px}
@media (min-width:1024px){.section-head h2{font-size:32px}}
.section-head p{margin-top:12px;color:var(--text-2);max-width:46em}
.section-head h2 .hl{color:var(--primary)}

/* ---------- Figure ---------- */
.figure{margin:24px 0 0;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--border);background:var(--surface)}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.figure figcaption{padding:12px 18px;font-size:13px;color:var(--text-2);text-align:center;border-top:1px solid var(--border)}

/* ---------- Table ---------- */
.table-wrap{margin-top:24px;overflow-x:auto;border:1px solid var(--border);border-radius:var(--r-card);background:var(--surface);box-shadow:var(--s1)}
table{width:100%;border-collapse:collapse;min-width:580px}
th{
  background:var(--ink-900);color:#fff;text-align:left;
  font-size:13px;font-weight:700;letter-spacing:.04em;padding:16px 20px;white-space:nowrap;
}
td{padding:16px 20px;font-size:15px;line-height:1.7;color:var(--text-2);border-top:1px solid var(--border);vertical-align:top}
tbody tr:nth-child(even){background:#FBFAFF}
tbody tr:hover{background:var(--primary-soft)}
td strong{color:var(--text-1);font-weight:700}
td .num{color:var(--primary);font-weight:700}

/* ---------- Topic grid ---------- */
.topic-grid{display:grid;gap:20px;margin-top:24px}
@media (min-width:640px){.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.topic-card{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--s1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.topic-card:hover{transform:translateY(-4px);border-color:rgba(0,217,184,.55);box-shadow:var(--s2)}
.topic-num{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;
  background:var(--signal);color:#3D2A00;
  display:grid;place-items:center;font-family:var(--font-num);font-weight:800;font-size:16px;
}
.topic-card h3{font-size:19px;margin-bottom:6px}
.topic-card p{font-size:14px;color:var(--text-2);line-height:1.8}
.topic-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}

/* ---------- List blocks ---------- */
.check-list li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;font-size:16px;color:var(--text-2)}
.check-list li svg{width:18px;height:18px;flex:0 0 auto;margin-top:6px;color:var(--accent)}
.check-list li b{color:var(--text-1)}

.step-list{margin-top:24px;display:grid;gap:0}
.step-item{display:grid;grid-template-columns:44px minmax(0,1fr);gap:18px;padding:20px 0;border-top:1px solid var(--border)}
.step-item:first-child{border-top:0}
.step-badge{
  width:44px;height:44px;border-radius:14px;background:var(--ink-900);color:var(--signal);
  display:grid;place-items:center;font-family:var(--font-num);font-weight:800;
}
.step-item h3{font-size:18px;margin-bottom:6px}
.step-item p{font-size:15px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:16px;
  margin-bottom:14px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item:hover{border-color:rgba(108,43,217,.35)}
.faq-item.is-open{border-color:rgba(108,43,217,.45);box-shadow:var(--s2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:17px;font-weight:700;color:var(--text-1);
}
.faq-q .chev{width:20px;height:20px;flex:0 0 auto;color:var(--primary);transition:transform .3s ease}
.faq-item.is-open .faq-q .chev{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .35s ease,opacity .3s ease}
.faq-item.is-open .faq-a{max-height:420px;opacity:1}
.faq-a p{padding:0 22px 22px;font-size:16px;color:var(--text-2);line-height:1.9}

/* ---------- CTA ---------- */
.cta-section{margin-top:72px;padding-bottom:8px}
@media (min-width:1024px){.cta-section{margin-top:96px}}
.cta-card{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,var(--ink-900),var(--ink-800));
  border-radius:24px;padding:28px;color:var(--text-inv);
  display:grid;gap:28px;
  border:1px solid var(--ink-700);
}
@media (min-width:1024px){.cta-card{grid-template-columns:7fr 5fr;padding:44px;gap:40px}}
.cta-card::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,217,184,.28),transparent 70%);
}
.cta-card h2{font-size:24px;color:#fff;margin-top:14px;position:relative}
@media (min-width:1024px){.cta-card h2{font-size:32px}}
.cta-card p{margin-top:12px;color:var(--text-inv-2);position:relative;max-width:34em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;position:relative}
.cta-points{position:relative;display:grid;gap:14px;align-content:start}
.cta-points li{
  display:flex;gap:12px;align-items:flex-start;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);
  border-radius:14px;padding:16px;font-size:15px;color:var(--text-inv);
}
.cta-points li svg{width:18px;height:18px;flex:0 0 auto;margin-top:6px;color:var(--accent)}
.cta-points li span{color:var(--text-inv-2);display:block;font-size:13px;margin-top:2px}

/* ---------- Footer ---------- */
.site-footer{margin-top:88px;background:var(--ink-900);color:var(--text-inv);border-top:1px solid var(--ink-700)}
.footer-grid{display:grid;gap:32px;padding:48px 0 32px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1.2fr 1.1fr;padding:64px 0 40px}}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--text-inv-2);line-height:1.9;max-width:24em}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-links li,.footer-contact li{margin-bottom:10px;font-size:14px;color:var(--text-inv-2);line-height:1.8}
.footer-links a{color:var(--text-inv-2);transition:color .2s ease}
.footer-links a:hover{color:#fff}
.footer-contact b{color:var(--text-inv);font-weight:700}
.footer-about p{font-size:14px;color:var(--text-inv-2);line-height:1.9}
.footer-bottom{
  border-top:1px solid var(--ink-700);
  padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-inv-2);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid var(--ink-700);color:var(--text-inv-2);
  font-size:13px;transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.to-top svg{width:16px;height:16px}
.to-top:hover{color:#fff;border-color:var(--accent);transform:translateY(-2px)}

/* ---------- Mobile tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:rgba(12,11,24,.98);
  border-top:1px solid var(--ink-700);
  padding-bottom:env(safe-area-inset-bottom);
  backdrop-filter:blur(10px);
}
@media (min-width:1024px){.mobile-tab{display:none}}
.tab-item{
  position:relative;height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--ink-700);color:#6E6890;transition:color .2s ease;
}
.tab-item svg{width:24px;height:24px;transition:transform .2s ease}
.tab-item.is-active{color:var(--accent)}
.tab-item.is-active svg{transform:translateY(-2px)}
.tab-item.is-active::before{content:"";position:absolute;top:0;left:24%;right:24%;height:3px;background:var(--accent);border-radius:0 0 3px 3px}
.tab-item:active{color:var(--accent)}
body{padding-bottom:76px}
@media (min-width:1024px){body{padding-bottom:0}}

/* roulang page: category2 */
:root{
  --ink-900:#0C0B18;
  --ink-800:#16142A;
  --ink-700:#221F3B;
  --paper:#F6F5FF;
  --surface:#FFFFFF;
  --border:#E7E4F5;
  --primary:#6C2BD9;
  --primary-600:#5A21BC;
  --primary-soft:rgba(108,43,217,.12);
  --accent:#00D9B8;
  --accent-soft:rgba(0,217,184,.12);
  --signal:#FFC53D;
  --text-1:#12101F;
  --text-2:#55516E;
  --text-inv:#EDEBFA;
  --text-inv-2:#A9A4C7;
  --danger:#E5484D;
  --r-card:18px;
  --r-input:12px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(12,11,24,.06);
  --s2:0 8px 24px rgba(12,11,24,.08);
  --s3:0 16px 40px rgba(108,43,217,.18);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--text-1);
  background:var(--paper);
  padding-top:var(--header-h);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:1024px){.container{padding:0 32px;}}
.svg-i{width:20px;height:20px;flex:0 0 auto;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:var(--header-h);
  display:flex;align-items:center;
  background:rgba(12,11,24,.55);
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(12,11,24,.95);
  border-bottom:1px solid var(--ink-700);
  box-shadow:var(--s2);
}
.header-inner{display:flex;align-items:center;gap:20px;width:100%;}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  color:#fff;text-decoration:none;font-weight:800;font-size:17px;
  letter-spacing:-.01em;white-space:nowrap;
}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  background:linear-gradient(135deg,#6C2BD9,#9B5CFF);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;}
.nav-links{display:none;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:var(--header-h);padding:0 14px;
  color:var(--text-inv-2);font-size:15px;font-weight:600;
  transition:color .2s ease;
}
.nav-link:hover{color:#fff;}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--accent);border-radius:2px 2px 0 0;
}
.header-actions{display:none;align-items:center;gap:16px;margin-left:12px;}
.link-quiet{color:var(--text-inv-2);font-size:14px;font-weight:600;transition:color .2s ease;}
.link-quiet:hover{color:#fff;}
.menu-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:var(--r-input);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
@media(min-width:1024px){
  .nav-links{display:flex;}
  .header-actions{display:flex;}
  .menu-toggle{display:none;}
}
.mobile-drawer{
  display:none;position:fixed;top:var(--header-h);left:0;right:0;z-index:55;
  background:var(--ink-900);border-bottom:1px solid var(--ink-700);
  padding:8px 20px 20px;
}
.mobile-drawer.is-open{display:block;}
.drawer-link{
  display:block;padding:14px 2px;font-size:16px;font-weight:600;
  color:var(--text-inv);border-bottom:1px solid var(--ink-700);
}
.drawer-link.is-active{color:var(--accent);}
.drawer-link:last-child{border-bottom:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;border:1px solid transparent;
  cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn svg{width:18px;height:18px;}
.btn-sm{height:44px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--s2);}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-2px);box-shadow:var(--s3);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--s1);}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  color:var(--primary);font-weight:700;font-size:15px;
}
.link-arrow svg{width:16px;height:16px;transition:transform .2s ease;}
.link-arrow:hover{color:var(--primary-600);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;white-space:nowrap;
}
.badge-primary{background:var(--primary-soft);color:var(--primary);}
.badge-accent{background:var(--accent-soft);color:#05796B;}
.badge-signal{background:rgba(255,197,61,.18);color:#8A6206;}
.badge-inv{background:rgba(0,217,184,.16);color:#5BF3DC;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  padding:56px 0 56px;
  background-image:linear-gradient(rgba(12,11,24,.62),rgba(12,11,24,.62)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;right:-90px;top:-80px;width:340px;height:340px;
  background:linear-gradient(135deg,rgba(0,217,184,.25),rgba(0,217,184,0) 70%);
  transform:rotate(18deg);pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(0,217,184,0),var(--accent),rgba(0,217,184,0));
  opacity:.75;
}
.page-hero .inner{position:relative;z-index:2;}
@media(min-width:1024px){.page-hero{padding:84px 0 72px;}}
.page-hero h1{
  font-size:30px;line-height:1.25;font-weight:800;letter-spacing:-.01em;
  margin:18px 0 16px;max-width:900px;
}
@media(min-width:1024px){.page-hero h1{font-size:44px;}}
.page-hero .lead{
  margin:0;max-width:66ch;font-size:17px;color:var(--text-inv-2);
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-inv-2);margin-bottom:20px;
}
.breadcrumb a{color:var(--text-inv-2);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb svg{width:14px;height:14px;opacity:.6;}
.breadcrumb .current{
  color:#fff;font-weight:700;max-width:12ch;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:40;
  background:var(--paper);border-bottom:1px solid var(--border);
}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 16px;
  border-radius:var(--r-pill);background:var(--surface);border:1px solid var(--border);
  color:var(--text-2);font-size:14px;font-weight:600;white-space:nowrap;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.chip:hover{border-color:var(--accent);color:var(--primary);background:#fff;}

/* ---------- 板块 ---------- */
.section{padding:64px 0;}
@media(min-width:1024px){.section{padding:104px 0;}}
.section[id]{scroll-margin-top:calc(var(--header-h) + 72px);}
.section-head{max-width:760px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:700;
}
.section h2{
  font-size:24px;line-height:1.25;font-weight:800;letter-spacing:-.01em;margin:0 0 14px;
}
@media(min-width:1024px){.section h2{font-size:32px;}}
.section h2 .accent-bar{
  display:inline-block;width:38px;height:5px;border-radius:3px;
  background:var(--accent);vertical-align:middle;margin-right:12px;
}
.section-desc{margin:0;color:var(--text-2);font-size:17px;}
.section-alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}

/* ---------- 时间线 ---------- */
.timeline{list-style:none;margin:0;padding:0;}
.tl-item{position:relative;padding-left:56px;padding-bottom:24px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:15px;top:36px;bottom:-6px;width:1px;
  background:var(--border);
}
.tl-item:last-child::before{display:none;}
.tl-marker{
  position:absolute;left:0;top:0;width:32px;height:32px;border-radius:12px;
  background:var(--signal);color:#2A1F00;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;font-variant-numeric:tabular-nums;
  box-shadow:0 6px 16px rgba(255,197,61,.28);
}
.tl-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--s1);padding:24px 26px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--s2);border-color:rgba(0,217,184,.45);}
.tl-card h3{margin:0 0 8px;font-size:19px;font-weight:700;line-height:1.35;}
.tl-card p{margin:0;color:var(--text-2);font-size:16px;}
.tl-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px;}
@media(min-width:640px){
  .tl-item{padding-left:72px;padding-bottom:28px;}
  .tl-item::before{left:19px;top:40px;}
  .tl-marker{width:40px;height:40px;font-size:15px;}
}

/* ---------- 图文分栏 ---------- */
.grid-7-5,.grid-5-7,.grid-8-4{display:grid;gap:32px;}
@media(min-width:1024px){
  .grid-7-5{grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
  .grid-5-7{grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
  .grid-8-4{grid-template-columns:8fr 4fr;gap:48px;align-items:start;}
}
.media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--border);
  box-shadow:var(--s2);background:var(--surface);
}
.media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.media-4-3 img{aspect-ratio:4/3;}
.feature + .feature{margin-top:56px;}
@media(min-width:1024px){.feature + .feature{margin-top:72px;}}
.feature h3{font-size:22px;font-weight:800;line-height:1.35;margin:0 0 12px;}
.feature p{margin:0;color:var(--text-2);font-size:17px;}
.point-list{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:12px;}
.point-list li{position:relative;padding-left:24px;color:var(--text-2);font-size:16px;}
.point-list li::before{
  content:"";position:absolute;left:2px;top:13px;width:8px;height:8px;
  border-radius:50%;background:var(--accent);
}

/* ---------- 数据带 ---------- */
.stat-band{
  margin-top:44px;border-top:1px solid var(--border);
  display:grid;grid-template-columns:1fr;
}
.stat-item{padding:22px 0;border-bottom:1px solid var(--border);}
.stat-num{
  font-family:"Inter","PingFang SC",system-ui,sans-serif;
  font-size:40px;font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;color:var(--primary);
}
.stat-num span{font-size:15px;font-weight:700;color:var(--text-2);margin-left:6px;}
.stat-label{margin-top:6px;font-size:13px;color:var(--text-2);}
@media(min-width:640px){
  .stat-band{grid-template-columns:repeat(3,1fr);}
  .stat-item{padding:26px 28px;border-bottom:0;border-left:1px solid var(--border);}
  .stat-item:first-child{border-left:0;padding-left:0;}
}

/* ---------- 编号列表 ---------- */
.num-list{list-style:none;margin:0;padding:0;display:grid;gap:16px;}
.num-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--s1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.num-item:hover{transform:translateY(-3px);box-shadow:var(--s2);border-color:rgba(108,43,217,.28);}
.num-box{
  flex:0 0 auto;width:36px;height:36px;border-radius:12px;
  background:var(--signal);color:#2A1F00;font-weight:800;font-size:15px;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.num-item h3{margin:0 0 6px;font-size:18px;font-weight:700;line-height:1.4;}
.num-item p{margin:0;color:var(--text-2);font-size:16px;}

/* ---------- 证言 ---------- */
.quote-grid{display:grid;gap:24px;}
@media(min-width:1024px){.quote-grid{grid-template-columns:repeat(2,1fr);}}
.quote-card{
  position:relative;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-card);box-shadow:var(--s2);padding:36px 30px 28px;
}
.quote-mark{width:44px;height:44px;color:rgba(108,43,217,.22);}
.quote-card blockquote{
  margin:24px 0 24px;font-size:18px;line-height:1.8;font-weight:600;color:var(--text-1);
}
.quote-user{display:flex;align-items:center;gap:12px;border-top:1px solid var(--border);padding-top:18px;}
.avatar{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-weight:800;
}
.quote-name{font-size:15px;font-weight:700;}
.quote-role{font-size:13px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:16px;
  margin-bottom:12px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:rgba(108,43,217,.4);box-shadow:var(--s2);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:700;color:var(--text-1);cursor:pointer;line-height:1.6;
}
.faq-q svg{width:20px;height:20px;flex:0 0 auto;color:var(--primary);transition:transform .25s ease;}
.faq-item.is-open .faq-q svg{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 22px 22px;color:var(--text-2);font-size:16px;}

/* ---------- 表单 ---------- */
.form-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--s2);padding:26px;
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--border);border-radius:var(--r-input);
  font-family:inherit;font-size:16px;color:var(--text-1);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft);
}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--text-2);line-height:1.7;}
.check input{width:18px;height:18px;margin-top:4px;accent-color:var(--primary);flex:0 0 auto;}
.form-note{margin-top:12px;font-size:13px;color:var(--text-2);}
.form-msg{
  display:none;margin-top:14px;font-size:14px;font-weight:700;color:#05796B;
}
.form-msg.is-show{display:block;}
.cta-panel{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--s2);padding:32px;}
@media(min-width:1024px){.cta-panel{padding:40px;}}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);color:var(--text-inv);
  border-top:1px solid var(--ink-700);padding:64px 0 0;margin-top:8px;
}
.footer-grid{display:grid;gap:36px;}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1.3fr 1.1fr;gap:40px;}}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin:0 0 16px;}
.footer-brand p{margin:16px 0 0;max-width:34ch;font-size:14px;line-height:1.9;color:var(--text-inv-2);}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.footer-links a{color:var(--text-inv-2);font-size:14px;transition:color .2s ease;}
.footer-links a:hover{color:#fff;}
.footer-about p{margin:0;font-size:14px;line-height:1.9;color:var(--text-inv-2);}
.footer-contact li{font-size:14px;color:var(--text-inv-2);}
.footer-contact b{color:var(--text-inv);font-weight:600;}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--ink-700);padding:22px 0;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--text-inv-2);}
.to-top{
  display:inline-flex;align-items:center;gap:6px;height:44px;padding:0 18px;
  background:transparent;border:1px solid var(--ink-700);border-radius:var(--r-pill);
  color:var(--text-inv-2);font-size:13px;font-weight:600;cursor:pointer;
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.to-top:hover{border-color:var(--accent);color:#fff;transform:translateY(-2px);}
.to-top svg{width:16px;height:16px;}

/* ---------- 移动底部 Tab ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:60;display:flex;
  background:var(--ink-900);border-top:1px solid var(--ink-700);
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
}
.tab{
  flex:1;position:relative;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:3px;
  color:var(--text-inv-2);font-size:11px;font-weight:600;min-height:44px;
}
.tab svg{width:22px;height:22px;transition:transform .2s ease,color .2s ease;}
.tab.is-active{color:var(--accent);}
.tab.is-active svg{color:var(--accent);transform:translateY(-2px);}
.tab.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:3px;border-radius:0 0 3px 3px;background:var(--accent);
}
@media(min-width:1024px){.tabbar{display:none;}}

@media(max-width:1023px){
  :root{--header-h:56px;}
  body{padding-top:56px;padding-bottom:76px;}
  .brand{font-size:15px;}
  .brand-mark{width:30px;height:30px;border-radius:10px;}
  .brand-mark svg{width:17px;height:17px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:28px;}
  .page-hero{padding:44px 0 48px;}
  .btn-block-mobile{width:100%;}
}

/* roulang page: category3 */
:root{
  --ink-900:#0C0B18;
  --ink-800:#16142A;
  --ink-700:#221F3B;
  --paper:#F6F5FF;
  --surface:#FFFFFF;
  --border:#E7E4F5;
  --primary:#6C2BD9;
  --primary-600:#5A21BC;
  --primary-soft:rgba(108,43,217,.12);
  --accent:#00D9B8;
  --signal:#FFC53D;
  --text-1:#12101F;
  --text-2:#55516E;
  --text-inv:#EDEBFA;
  --text-inv-2:#A9A4C7;
  --danger:#E5484D;
  --r-card:18px;
  --r-input:12px;
  --s1:0 1px 2px rgba(12,11,24,.06);
  --s2:0 8px 24px rgba(12,11,24,.08);
  --s3:0 16px 40px rgba(108,43,217,.18);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Inter",sans-serif;
  background:var(--paper);
  color:var(--text-1);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--header-h);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(12,11,24,.95);
  border-bottom:1px solid var(--ink-700);
  box-shadow:var(--s2);
}
.header-inner{height:100%;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-inv);font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--primary) 0%,#8b4bf0 60%,var(--accent) 160%);
  display:grid;place-items:center;
  box-shadow:0 6px 18px rgba(108,43,217,.45);
}
.brand-mark svg{width:20px;height:20px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:44px;padding:0 14px;font-size:15px;color:rgba(237,235,250,.78);
  border-radius:10px;transition:color .22s ease,background .22s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:#fff;font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:16px;margin-left:8px}
.link-ghost{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--accent);
  padding:10px 4px;transition:color .22s ease,gap .22s ease;
}
.link-ghost:hover{color:#5ffff0;gap:10px}
.link-ghost svg{width:16px;height:16px}
.icon-btn{
  display:none;width:44px;height:44px;border-radius:12px;place-items:center;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  color:var(--text-inv);transition:background .22s ease,border-color .22s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.16);border-color:var(--accent)}
.icon-btn svg{width:20px;height:20px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 24px rgba(108,43,217,.28)}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-2px);box-shadow:var(--s3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(108,43,217,.22)}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn:disabled{opacity:.4;pointer-events:none}

/* ---------- 页头 banner ---------- */
.page-banner{
  position:relative;overflow:hidden;color:var(--text-inv);
  padding:calc(var(--header-h) + 54px) 0 78px;
  background-image:linear-gradient(rgba(12,11,24,.62),rgba(12,11,24,.62)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-banner::before{
  content:"";position:absolute;right:-60px;top:-40px;width:420px;height:420px;
  background:linear-gradient(150deg,rgba(0,217,184,.28),rgba(108,43,217,.35));
  clip-path:polygon(100% 0,100% 100%,0 0);opacity:.55;pointer-events:none;
}
.page-banner::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  background:linear-gradient(90deg,var(--accent),rgba(0,217,184,0) 72%);
}
.banner-inner{position:relative;z-index:2;max-width:820px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-inv-2);margin-bottom:22px;flex-wrap:wrap}
.crumb a{transition:color .2s ease}
.crumb a:hover{color:var(--accent)}
.crumb svg{width:14px;height:14px;flex:0 0 auto;opacity:.65}
.crumb .crumb-current{color:var(--text-inv);font-weight:700;max-width:12em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 16px;border-radius:999px;
  background:rgba(0,217,184,.14);border:1px solid rgba(0,217,184,.4);
  color:var(--accent);font-size:13px;font-weight:700;letter-spacing:.02em;margin-bottom:20px;
}
.banner-tag svg{width:15px;height:15px}
.page-banner h1{
  font-size:44px;line-height:1.25;font-weight:800;letter-spacing:-.01em;color:#fff;
}
.banner-sub{margin-top:18px;font-size:17px;line-height:1.9;color:rgba(237,235,250,.82);max-width:660px}
.banner-metrics{display:flex;flex-wrap:wrap;gap:14px 36px;margin-top:30px}
.banner-metrics span{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-inv-2)}
.banner-metrics b{color:var(--accent);font-size:16px;font-weight:800;font-variant-numeric:tabular-nums}

/* ---------- 锚点胶囊条 ---------- */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:60;
  background:rgba(246,245,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-pill{
  flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--border);background:var(--surface);font-size:14px;color:var(--text-2);
  transition:transform .22s ease,border-color .22s ease,color .22s ease,box-shadow .22s ease;
}
.anchor-pill:hover{border-color:var(--accent);color:var(--primary);transform:translateY(-2px);box-shadow:var(--s1)}

/* ---------- 板块 ---------- */
.section{padding:104px 0}
.section-alt{background:linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%)}
.section-dark{background:var(--ink-900);color:var(--text-inv)}
.section-head{max-width:760px;margin-bottom:52px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--primary);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--accent);border-radius:2px}
.section-head h2{font-size:32px;line-height:1.3;font-weight:800;letter-spacing:-.01em}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px;line-height:1.9}
.section-dark .eyebrow{color:var(--accent)}
.section-dark .section-head h2{color:#fff}
.section-dark .section-head p{color:var(--text-inv-2)}

/* ---------- 数据带 ---------- */
.data-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--s1);overflow:hidden;
}
.data-item{padding:30px 26px;border-right:1px solid var(--border)}
.data-item:last-child{border-right:0}
.data-num{font-size:44px;font-weight:800;line-height:1.05;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--primary)}
.data-num sup{font-size:15px;font-weight:700;margin-left:3px;color:var(--accent);vertical-align:super}
.data-label{font-size:13px;color:var(--text-2);margin-top:10px;line-height:1.7}

/* ---------- 对比表 ---------- */
.table-block{margin-top:56px}
.table-caption{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;margin-bottom:20px}
.table-caption h3{font-size:22px;font-weight:800;letter-spacing:-.01em}
.table-caption span{font-size:13px;color:var(--text-2)}
.compare-wrap{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--s1);overflow:hidden;
}
.compare{width:100%;border-collapse:collapse;table-layout:fixed}
.compare thead th{
  background:var(--ink-900);color:#fff;font-size:14px;font-weight:700;text-align:left;
  height:56px;padding:0 22px;letter-spacing:.02em;
}
.compare tbody td{
  height:56px;padding:0 22px;border-top:1px solid var(--border);
  font-size:15px;color:var(--text-2);vertical-align:middle;
}
.compare tbody td:first-child{color:var(--text-1);font-weight:700}
.compare tbody td .now{color:var(--primary);font-weight:700;font-variant-numeric:tabular-nums}
.compare tbody td .old{font-variant-numeric:tabular-nums}
.compare tbody tr:nth-child(even){background:#FBFAFF}
.compare tbody tr:hover{background:var(--primary-soft)}
.table-note{margin-top:16px;font-size:13px;color:var(--text-2);display:flex;gap:8px;align-items:flex-start}
.table-note svg{width:16px;height:16px;flex:0 0 auto;margin-top:4px;color:var(--accent)}

/* ---------- 说明卡组合 ---------- */
.change-layout{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.media-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--s1);overflow:hidden;transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--s3);border-color:rgba(0,217,184,.4)}
.media-card figure{margin:0;aspect-ratio:16/9;overflow:hidden}
.media-card figure img{width:100%;height:100%;object-fit:cover}
.media-body{padding:26px 28px 30px}
.media-body h3{font-size:22px;font-weight:800;letter-spacing:-.01em;margin-bottom:12px}
.media-body p{color:var(--text-2);font-size:16px;line-height:1.9}
.mini-list{display:flex;flex-direction:column;gap:16px}
.mini-item{
  display:flex;gap:16px;align-items:flex-start;padding:22px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--s1);transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.mini-item:hover{transform:translateY(-4px);border-color:rgba(0,217,184,.45);box-shadow:var(--s3)}
.mini-num{
  flex:0 0 auto;width:38px;height:38px;border-radius:10px;background:var(--signal);
  color:var(--ink-900);font-weight:800;font-size:15px;display:grid;place-items:center;
  font-variant-numeric:tabular-nums;
}
.mini-item h4{font-size:17px;font-weight:800;margin-bottom:6px}
.mini-item p{font-size:15px;color:var(--text-2);line-height:1.8}

/* ---------- 图文交替 ---------- */
.split{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.split.reverse{grid-template-columns:5fr 7fr}
.split + .split{margin-top:80px}
.split-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--s2);border:1px solid var(--border)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-body h3{font-size:22px;font-weight:800;letter-spacing:-.01em;margin-bottom:14px}
.split-body > p{color:var(--text-2);font-size:16px;line-height:1.9}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);line-height:1.8}
.point-list svg{width:18px;height:18px;flex:0 0 auto;margin-top:5px;color:var(--accent)}
.text-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:24px;
  color:var(--primary);font-size:15px;font-weight:700;transition:gap .22s ease,color .22s ease;
}
.text-link:hover{gap:12px;color:var(--primary-600)}
.text-link svg{width:16px;height:16px}

/* ---------- 节奏步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{
  position:relative;padding:26px 24px 28px;background:var(--ink-800);
  border:1px solid rgba(255,255,255,.08);border-radius:var(--r-card);
  transition:transform .28s ease,border-color .28s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(0,217,184,.45)}
.step:not(:last-child)::after{
  content:"";position:absolute;top:44px;right:-13px;width:26px;height:1px;background:var(--ink-700);
}
.step-num{
  width:36px;height:36px;border-radius:10px;background:var(--signal);color:var(--ink-900);
  font-weight:800;font-size:15px;display:grid;place-items:center;margin-bottom:18px;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;font-weight:800;color:#fff;margin-bottom:10px}
.step p{font-size:15px;color:var(--text-inv-2);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:16px;
  box-shadow:var(--s1);overflow:hidden;transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item:hover{border-color:rgba(0,217,184,.45)}
.faq-item.is-open{box-shadow:var(--s2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 26px;background:none;border:0;text-align:left;font-size:17px;font-weight:700;
  cursor:pointer;transition:color .22s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-q svg{width:20px;height:20px;flex:0 0 auto;color:var(--primary);transition:transform .32s ease}
.faq-item.is-open .faq-q svg{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .36s ease}
.faq-a p{padding:0 26px 24px;color:var(--text-2);font-size:16px;line-height:1.9}

/* ---------- CTA 表单 ---------- */
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.cta-copy h2{font-size:32px;font-weight:800;line-height:1.3;color:#fff;letter-spacing:-.01em}
.cta-copy p{margin-top:18px;color:var(--text-inv-2);font-size:16px;line-height:1.9}
.cta-copy ul{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.cta-copy li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-inv)}
.cta-copy li svg{width:18px;height:18px;flex:0 0 auto;margin-top:5px;color:var(--accent)}
.form-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:30px 28px 32px;box-shadow:var(--s2);
}
.form-card h3{font-size:20px;font-weight:800;margin-bottom:6px}
.form-card .form-hint{font-size:13px;color:var(--text-2);margin-bottom:22px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:13px;font-weight:700;color:var(--text-2)}
.field input,.field select,.field textarea{
  height:48px;border-radius:var(--r-input);border:1px solid var(--border);background:var(--surface);
  padding:0 14px;font-size:16px;outline:none;transition:border-color .22s ease,box-shadow .22s ease;
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.8;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft);
}
.check-row{display:flex;gap:10px;align-items:flex-start;margin-bottom:22px}
.check-row input{width:18px;height:18px;flex:0 0 auto;margin-top:5px;accent-color:var(--primary)}
.check-row label{font-size:13px;color:var(--text-2);line-height:1.7}
.form-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.form-msg{margin-top:16px;font-size:13px;color:var(--accent);font-weight:700;display:none}
.form-msg.is-show{display:block}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);color:var(--text-inv);
  border-top:1px solid var(--ink-700);padding:72px 0 34px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.4fr 1.2fr;gap:40px}
.footer-brand .brand{margin-bottom:18px;font-size:17px}
.footer-brand p{font-size:14px;color:var(--text-inv-2);line-height:1.9;max-width:300px}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-links li+li,.footer-contact li+li{margin-top:12px}
.footer-links a,.footer-contact{font-size:14px;color:var(--text-inv-2);line-height:1.8}
.footer-links a{transition:color .2s ease}
.footer-links a:hover{color:#fff}
.footer-about p{font-size:14px;color:var(--text-inv-2);line-height:1.9}
.footer-contact b{color:var(--text-inv);font-weight:700}
.footer-bottom{
  margin-top:52px;padding-top:26px;border-top:1px solid var(--ink-700);
  display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-inv-2)}
.to-top{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;border-radius:999px;
  background:rgba(255,255,255,.06);border:1px solid var(--ink-700);color:var(--text-inv);
  font-size:13px;cursor:pointer;transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.to-top:hover{background:rgba(255,255,255,.12);border-color:var(--accent);transform:translateY(-2px)}
.to-top svg{width:15px;height:15px}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:110;display:none;
  background:rgba(12,11,24,.97);border-top:1px solid var(--ink-700);
  padding-bottom:env(safe-area-inset-bottom);
  backdrop-filter:blur(12px);
}
.tab-item{
  flex:1;height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  position:relative;font-size:11px;color:var(--text-inv-2);transition:color .22s ease;
}
.tab-item svg{width:24px;height:24px;transition:transform .22s ease}
.tab-item.is-active{color:var(--accent)}
.tab-item.is-active svg{transform:translateY(-2px)}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:3px;border-radius:0 0 3px 3px;background:var(--accent);
}

/* ---------- 响应式 ---------- */
@media(max-width:1023px){
  .split,.split.reverse,.cta-grid,.change-layout{grid-template-columns:1fr;gap:32px}
  .split + .split{margin-top:56px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(2)::after{display:none}
}
@media(max-width:767px){
  :root{--header-h:56px}
  body{font-size:16px;padding-bottom:76px}
  .section{padding:64px 0}
  .page-banner{padding:calc(var(--header-h) + 40px) 0 56px}
  .page-banner h1{font-size:30px}
  .section-head h2,.cta-copy h2{font-size:24px}
  .section-head{margin-bottom:36px}
  .data-strip{grid-template-columns:repeat(2,1fr)}
  .data-item{border-right:0;border-bottom:1px solid var(--border);padding:24px 20px}
  .data-item:nth-child(odd){border-right:1px solid var(--border)}
  .data-item:nth-child(3),.data-item:nth-child(4){border-bottom:0}
  .data-num{font-size:34px}
  .media-body{padding:22px 20px 26px}
  .media-body h3,.split-body h3,.table-caption h3{font-size:19px}
  .anchor-bar{top:var(--header-h)}
  .compare{display:block}
  .compare thead{display:none}
  .compare tbody,.compare tr,.compare td{display:block;width:100%}
  .compare{border-collapse:separate}
  .compare tbody tr{padding:10px 0;border-top:1px solid var(--border)}
  .compare tbody tr:first-child{border-top:0}
  .compare tbody td{
    height:auto;padding:7px 18px;border-top:0;font-size:15px;
  }
  .compare tbody td::before{
    content:attr(data-label);display:block;font-size:12px;font-weight:700;
    color:var(--text-2);letter-spacing:.04em;margin-bottom:2px;
  }
  .compare tbody tr:nth-child(even){background:#FBFAFF}
  .steps{grid-template-columns:1fr}
  .step::after{display:none}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .form-card{padding:24px 20px 26px}
  .form-actions .btn{width:100%}
}
@media(max-width:640px){
  .nav-links,.header-actions .btn,.header-actions .link-ghost{display:none}
  .icon-btn{display:grid}
  .mobile-tab{display:flex}
}