/* roulang page: index */
:root{
  --brand-600:#6C4CF1;
  --brand-500:#7E63F5;
  --cyan-500:#2BB7E8;
  --mint-500:#12B886;
  --accent-500:#FF7A45;
  --bg-page:#F7F6FB;
  --bg-card:#FFFFFF;
  --ink-900:#1A1A2E;
  --ink-600:#5A5A72;
  --ink-400:#8B8BA0;
  --line:#EAE8F5;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-card:0 14px 34px -18px rgba(76,60,220,.28);
  --shadow-hover:0 22px 46px -18px rgba(76,60,220,.38);
  --grad:linear-gradient(120deg,#6C4CF1 0%,#7E63F5 45%,#2BB7E8 100%);
}
*,*::before,*::after{box-sizing:border-box}
body{
  margin:0;
  padding:0;
  background:var(--bg-page);
  color:var(--ink-600);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
button,input,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p{margin:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
@media (min-width:640px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand-600);outline-offset:2px;border-radius:8px;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:16px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .25s ease,background-position .35s ease,box-shadow .25s ease,background-color .25s ease,border-color .25s ease,color .25s ease;
}
.btn-primary{
  background-image:var(--grad);background-size:170% 100%;background-position:0% 0;
  color:#fff;box-shadow:0 12px 26px -14px rgba(76,60,220,.62);
}
.btn-primary:hover{background-position:100% 0;filter:brightness(1.05);transform:translateY(-2px)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:rgba(108,76,241,.35)}
.btn-ghost:hover{background:rgba(108,76,241,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-light{background:#fff;color:var(--brand-600);box-shadow:0 12px 26px -16px rgba(20,10,70,.5)}
.btn-light:hover{transform:translateY(-2px);filter:brightness(1.02)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 10px 30px -22px rgba(76,60,220,.5)}
.nav-inner{display:flex;align-items:center;gap:18px;height:64px}
@media (min-width:768px){.nav-inner{height:72px;gap:24px}}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-icon{
  width:34px;height:34px;border-radius:11px;background-image:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;color:#fff;
  box-shadow:0 10px 20px -12px rgba(76,60,220,.75);
}
.brand-text{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
@media (max-width:400px){.brand-text{font-size:15px}}
.nav-links{display:none}
@media (min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:6px;margin-left:6px}
}
.nav-link{
  padding:9px 15px;border-radius:999px;font-size:15px;font-weight:500;color:var(--ink-600);
  transition:background-color .22s ease,color .22s ease;
}
.nav-link:hover{background:rgba(108,76,241,.08);color:var(--brand-600)}
.nav-link.active{color:var(--brand-600);background:rgba(108,76,241,.1);font-weight:600}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{display:none}
@media (min-width:1024px){.nav-search{display:block}}
.nav-search input{
  height:40px;width:200px;border-radius:999px;border:1px solid var(--line);background:#F7F6FB;
  padding:0 16px;font-size:14px;color:var(--ink-900);transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-search input::placeholder{color:var(--ink-400)}
.nav-search input:focus{outline:none;border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 3px rgba(108,76,241,.14)}
.nav-login{display:none;font-size:15px;font-weight:500;color:var(--ink-600);padding:8px 4px;transition:color .2s ease}
.nav-login:hover{color:var(--brand-600)}
@media (min-width:1024px){.nav-login{display:inline-flex;align-items:center}}
.nav-cta{display:none}
@media (min-width:1024px){.nav-cta{display:inline-flex}}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 10px;border-radius:12px;border:1px solid var(--line);
  background:#fff;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .25s ease,opacity .25s ease}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (min-width:1024px){.nav-toggle{display:none}}
.mobile-drawer{max-height:0;overflow:hidden;transition:max-height .32s ease;border-top:1px solid transparent;background:#fff}
.mobile-drawer.open{max-height:460px;border-top-color:var(--line)}
.mobile-drawer-inner{padding:18px 16px 24px;display:grid;gap:14px}
.mobile-search input{
  width:100%;height:44px;border-radius:12px;border:1px solid var(--line);background:#F7F6FB;
  padding:0 16px;font-size:15px;color:var(--ink-900);
}
.mobile-search input:focus{outline:none;border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 3px rgba(108,76,241,.14)}
.mobile-links{display:grid;gap:6px}
.mobile-links a{padding:12px 14px;border-radius:12px;font-size:16px;font-weight:500;color:var(--ink-900);background:#F7F6FB;transition:background-color .2s ease,color .2s ease}
.mobile-links a:hover{background:rgba(108,76,241,.1);color:var(--brand-600)}
.mobile-links a.active{background:rgba(108,76,241,.12);color:var(--brand-600);font-weight:600}

/* ============ Hero ============ */
.hero{position:relative;padding:40px 0 8px;overflow:hidden}
.hero::before{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(108,76,241,.14),rgba(43,183,232,.08) 60%,transparent 72%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;gap:36px}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(108,76,241,.08);color:var(--brand-600);font-size:13px;font-weight:600;margin-bottom:18px;
}
.hero-title{
  font-size:clamp(32px,5vw,56px);line-height:1.15;letter-spacing:-.02em;font-weight:800;
  color:var(--ink-900);margin-bottom:18px;
}
.hero-title .hl{color:var(--brand-600)}
.hero-sub{font-size:17px;line-height:1.78;color:var(--ink-600);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.badge-row{display:flex;gap:12px;overflow-x:auto;padding:4px 2px 10px;scrollbar-width:thin}
.stat-badge{
  flex:0 0 auto;display:inline-flex;align-items:baseline;gap:8px;padding:9px 16px;border-radius:999px;
  background:rgba(108,76,241,.08);border:1px solid rgba(108,76,241,.12);
}
.stat-badge b{font-size:21px;font-weight:700;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1}
.stat-badge span{font-size:13px;color:var(--ink-600);white-space:nowrap}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);border:1px solid var(--line);
}
.float-card{
  position:absolute;left:14px;bottom:18px;display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:12px 18px;box-shadow:var(--shadow-card);
}
@media (min-width:768px){.float-card{left:-18px;bottom:26px;padding:14px 20px}}
.float-card .dot{
  width:38px;height:38px;border-radius:12px;background-image:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;color:#fff;flex:0 0 auto;
}
.float-card strong{display:block;font-size:15px;color:var(--ink-900);font-weight:700}
.float-card small{display:block;font-size:12px;color:var(--ink-400)}

/* ============ 通用板块 ============ */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:88px 0}}
.section-soft{background:#fff}
.section-head{margin-bottom:34px;display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end;justify-content:space-between}
.section-head .head-main{max-width:660px}
.section-title{font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--ink-900);letter-spacing:-.01em;margin-bottom:12px;line-height:1.3}
.section-desc{font-size:16px;line-height:1.78;color:var(--ink-600)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(108,76,241,.08);color:var(--brand-600);font-size:13px;font-weight:600;margin-bottom:14px;
}
.link-more{font-size:15px;font-weight:600;color:var(--brand-600);white-space:nowrap;transition:opacity .2s ease}
.link-more:hover{text-decoration:underline;text-underline-offset:4px}

/* ============ 三步上手 ============ */
.steps{display:grid;gap:22px}
@media (min-width:768px){.steps{grid-template-columns:repeat(3,1fr)}}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.35)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:14px;
  background-image:var(--grad);color:#fff;font-weight:800;font-size:17px;font-variant-numeric:tabular-nums;
  margin-bottom:18px;box-shadow:0 12px 24px -14px rgba(76,60,220,.7);
}
.step-card h3{font-size:20px;font-weight:700;color:var(--ink-900);margin-bottom:10px}
.step-card p{font-size:15px;line-height:1.78;color:var(--ink-600)}
.step-tag{
  display:inline-block;margin-top:16px;font-size:13px;color:var(--brand-600);font-weight:600;
  background:rgba(108,76,241,.08);border-radius:12px;padding:5px 12px;
}

/* ============ 能力区（1大2小） ============ */
.market-grid{display:grid;gap:24px}
@media (min-width:1024px){.market-grid{grid-template-columns:1.15fr .85fr;gap:26px}}
.market-side{display:grid;gap:24px}
@media (min-width:640px) and (max-width:1023px){.market-side{grid-template-columns:1fr 1fr}}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3)}
.card-media{position:relative;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-media.big{aspect-ratio:16/10}
.card-media.small{aspect-ratio:16/9}
.card-body{padding:24px 26px 28px}
.card-body h3{font-size:20px;font-weight:700;color:var(--ink-900);margin-bottom:10px}
.card-body p{font-size:15px;line-height:1.78;color:var(--ink-600)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;padding:5px 11px;border-radius:12px;
  background:rgba(108,76,241,.08);color:var(--brand-600);
}
.chip-mint{background:rgba(18,184,134,.1);color:#0E986E}
.chip-cyan{background:rgba(43,183,232,.12);color:#1E93BE}

/* ============ 案例 ============ */
.case-grid{display:grid;gap:24px}
@media (min-width:1024px){.case-grid{grid-template-columns:1.35fr 1fr 1fr;gap:24px}}
@media (min-width:640px) and (max-width:1023px){.case-grid{grid-template-columns:1fr 1fr}}
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3)}
.case-card .case-media{aspect-ratio:16/9;overflow:hidden}
.case-card .case-media img{width:100%;height:100%;object-fit:cover}
.case-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.case-body h3{font-size:19px;font-weight:700;color:var(--ink-900);line-height:1.45}
.case-body p{font-size:14.5px;line-height:1.78;color:var(--ink-600)}
.case-result{
  margin-top:auto;display:flex;flex-wrap:wrap;gap:10px;padding-top:16px;border-top:1px solid var(--line);
}
.result-item{display:flex;align-items:baseline;gap:6px}
.result-item b{font-size:19px;font-weight:700;color:var(--brand-600);font-variant-numeric:tabular-nums}
.result-item span{font-size:12.5px;color:var(--ink-400)}
.case-source{font-size:12.5px;color:var(--ink-400)}

/* ============ 资讯列表 ============ */
.post-list{display:grid;gap:20px}
@media (min-width:1024px){.post-list{grid-template-columns:1fr 1fr;gap:22px}}
.post-card{margin:0}
.post-link{
  display:flex;gap:18px;padding:18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-md);box-shadow:var(--shadow-card);height:100%;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-link:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3)}
.post-thumb{
  flex:0 0 132px;width:132px;height:104px;border-radius:14px;position:relative;overflow:hidden;
  background-image:linear-gradient(135deg,rgba(108,76,241,.18),rgba(43,183,232,.2));
}
.post-thumb::after{
  content:"";position:absolute;left:14px;right:14px;top:50%;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(255,255,255,.9),rgba(255,255,255,.3));
}
.post-body{flex:1;min-width:0;display:flex;flex-direction:column}
.post-title{
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.55;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-link:hover .post-title{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.post-excerpt{
  font-size:14px;line-height:1.7;color:var(--ink-600);margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-400)}
@media (max-width:519px){
  .post-link{flex-direction:column;gap:14px}
  .post-thumb{flex:none;width:100%;height:120px}
}
.empty-state{
  grid-column:1/-1;text-align:center;padding:52px 24px;background:#fff;border:1px dashed var(--line);
  border-radius:var(--radius-lg);color:var(--ink-600);
}
.empty-state .empty-icon{
  width:54px;height:54px;margin:0 auto 16px;border-radius:16px;background:rgba(108,76,241,.08);
  display:flex;align-items:center;justify-content:center;color:var(--brand-600);
}
.empty-state p{margin-bottom:18px;font-size:15px}

/* ============ FAQ ============ */
.faq-wrap{display:grid;gap:14px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:0 22px;
  transition:background-color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:rgba(108,76,241,.3)}
.faq-item[open]{background:rgba(108,76,241,.05);border-color:rgba(108,76,241,.32);box-shadow:var(--shadow-card)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 0;font-size:17px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-mark{
  flex:0 0 auto;width:26px;height:26px;border-radius:9px;background:rgba(108,76,241,.1);color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;line-height:1;
  transition:transform .25s ease,background-color .25s ease;
}
.faq-item[open] .faq-mark{transform:rotate(45deg);background:rgba(108,76,241,.18)}
.faq-answer{padding:0 0 20px;font-size:15px;line-height:1.82;color:var(--ink-600);max-width:780px}

/* ============ CTA ============ */
.cta-section{padding:56px 0 72px}
@media (min-width:768px){.cta-section{padding:80px 0 96px}}
.cta-card{
  position:relative;overflow:hidden;background-image:var(--grad);border-radius:var(--radius-lg);
  padding:34px 26px;color:#fff;display:grid;gap:32px;box-shadow:0 30px 60px -30px rgba(76,60,220,.7);
}
@media (min-width:640px){.cta-card{padding:44px 40px}}
@media (min-width:1024px){.cta-card{grid-template-columns:1fr 1fr;gap:48px;padding:52px 48px}}
.cta-card::after{
  content:"";position:absolute;right:-90px;bottom:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.24),transparent 68%);pointer-events:none;
}
.cta-copy{position:relative;z-index:1}
.cta-copy h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.28;margin-bottom:16px;letter-spacing:-.01em}
.cta-copy p{font-size:16px;line-height:1.8;color:rgba(255,255,255,.88);margin-bottom:22px;max-width:520px}
.cta-points{display:grid;gap:10px;margin-bottom:26px}
.cta-points li{
  list-style:none;display:flex;align-items:flex-start;gap:10px;font-size:15px;color:rgba(255,255,255,.94);
}
.cta-points li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:3px;background:#fff;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-form-card{
  position:relative;z-index:1;background:#fff;border-radius:var(--radius-md);padding:26px 24px;
  box-shadow:0 24px 50px -26px rgba(16,8,60,.55);
}
.cta-form-card h3{font-size:20px;font-weight:700;color:var(--ink-900);margin-bottom:6px}
.cta-form-card .form-hint{font-size:13px;color:var(--ink-400);margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-900);margin-bottom:7px}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;
  color:var(--ink-900);font-size:15px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field input{height:46px;padding:0 14px}
.field textarea{min-height:88px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-400)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(108,76,241,.14)}
.field.error input,.field.error textarea{border-color:var(--accent-500)}
.form-note{font-size:12.5px;color:var(--ink-400);line-height:1.65;margin-top:12px}
.form-msg{
  display:none;margin-top:14px;font-size:14px;font-weight:600;color:#0E986E;
  background:rgba(18,184,134,.1);border-radius:12px;padding:11px 14px;
}
.form-msg.show{display:block}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:#F2F1FA;padding:56px 0 0;margin-top:8px}
.site-footer::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background-image:var(--grad)}
.footer-grid{display:grid;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{font-size:16px}
.footer-about{font-size:14px;line-height:1.8;color:var(--ink-600);max-width:340px}
.footer-col h4{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:14px}
.footer-links a{display:block;font-size:14px;color:var(--ink-600);padding:6px 0;transition:color .2s ease,padding-left .2s ease}
.footer-links a:hover{color:var(--brand-600);padding-left:4px}
.footer-contact{font-size:14px;color:var(--ink-600);line-height:1.9}
.footer-contact b{color:var(--ink-900);font-weight:600}
.footer-bottom{
  border-top:1px solid var(--line);margin-top:42px;padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-400);
}
.footer-bottom a{color:var(--ink-400);transition:color .2s ease}
.footer-bottom a:hover{color:var(--brand-600)}
.footer-bottom .foot-links{display:flex;flex-wrap:wrap;gap:18px}
@media (max-width:639px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand-col{grid-column:1 / -1}
}

/* roulang page: article */
:root{
  --brand-600:#6C4CF1;
  --brand-500:#7E63F5;
  --cyan-500:#2BB7E8;
  --mint-500:#12B886;
  --accent-500:#FF7A45;
  --bg-page:#F7F6FB;
  --bg-card:#FFFFFF;
  --ink-900:#1A1A2E;
  --ink-600:#5A5A72;
  --ink-400:#8B8BA0;
  --line:#EAE8F5;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-card:0 14px 34px -18px rgba(76,60,220,.28);
  --grad:linear-gradient(120deg,#6C4CF1 0%,#7E63F5 45%,#2BB7E8 100%);
  --soft:rgba(108,76,241,.08);
}
*,*::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","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink-600);background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.24}
p{margin:0}
body .container{width:100%;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:16px;padding-right:16px}
@media(min-width:640px){body .container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){body .container{padding-left:32px;padding-right:32px}}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:8px}
.num{font-variant-numeric:tabular-nums}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:saturate(150%) blur(8px);border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 12px 30px -22px rgba(26,26,46,.35)}
.header-inner{display:flex;align-items:center;gap:18px;height:64px}
@media(min-width:768px){.header-inner{height:72px;gap:26px}}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-icon{width:36px;height:36px;border-radius:12px;background:var(--grad);display:grid;place-items:center;color:#fff;flex:none;box-shadow:0 10px 22px -12px rgba(108,76,241,.75)}
.brand-text{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--ink-900);white-space:nowrap}
@media(min-width:768px){.brand-text{font-size:17px}}
.nav-links{display:none}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;min-width:0}
}
.nav-link{display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:999px;font-size:15px;font-weight:600;color:var(--ink-600);transition:.22s ease;white-space:nowrap}
.nav-link:hover{color:var(--brand-600);background:var(--soft)}
.nav-link.active{color:var(--brand-600);background:var(--soft)}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-search{display:none}
@media(min-width:1024px){
  .nav-search{display:flex;align-items:center;gap:8px;height:42px;padding:0 8px 0 14px;border:1px solid var(--line);background:#fff;border-radius:999px;transition:.22s ease}
  .nav-search:focus-within{border-color:rgba(108,76,241,.55);box-shadow:0 0 0 3px rgba(108,76,241,.14)}
}
.nav-search svg{flex:none;color:var(--ink-400)}
.nav-search input{border:0;background:transparent;outline:none;width:150px;font-size:14px}
.nav-search input::placeholder{color:var(--ink-400)}
.nav-search button{border:0;background:var(--grad);color:#fff;border-radius:999px;height:30px;padding:0 14px;font-size:13px;font-weight:700;cursor:pointer;transition:.22s ease}
.nav-search button:hover{filter:brightness(1.06)}
.link-login{display:none;font-size:14px;font-weight:600;color:var(--ink-600);padding:8px 6px;transition:.2s ease}
.link-login:hover{color:var(--brand-600)}
@media(min-width:768px){.link-login{display:inline-flex}}
.nav-toggle{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;cursor:pointer;color:var(--ink-900)}
@media(min-width:1024px){.nav-toggle{display:none}}
.drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:18px 0 24px}
.drawer.is-open{display:block}
.drawer .drawer-search{display:flex;align-items:center;gap:8px;height:46px;border:1px solid var(--line);border-radius:999px;padding:0 8px 0 16px;background:#FBFAFE;margin-bottom:16px}
.drawer .drawer-search input{flex:1;border:0;background:transparent;outline:none;font-size:15px}
.drawer .drawer-search button{border:0;background:var(--grad);color:#fff;border-radius:999px;height:32px;padding:0 16px;font-size:13px;font-weight:700;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.drawer-nav a{padding:12px 14px;border-radius:12px;font-size:15px;font-weight:600;color:var(--ink-600);background:#FBFAFE;transition:.2s ease}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--brand-600);background:var(--soft)}
.drawer .btn{width:100%}

/* ============ buttons ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;transition:transform .2s ease,filter .2s ease,background .2s ease,color .2s ease,border-color .2s ease;text-align:center}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 16px 30px -18px rgba(76,60,220,.75)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:#fff;border-color:rgba(108,76,241,.4);color:var(--brand-600)}
.btn-ghost:hover{background:var(--soft);transform:translateY(-2px)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ============ chips / badges ============ */
.chip{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:12px;background:var(--soft);color:var(--brand-600);font-size:13px;font-weight:600;white-space:nowrap}
.chip-plain{background:#F2F1FA;color:var(--ink-600)}
.badge-row{display:flex;gap:12px;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch}
.badge-row::-webkit-scrollbar{height:4px}
.badge-row::-webkit-scrollbar-thumb{background:rgba(108,76,241,.25);border-radius:4px}
.badge{flex:none;display:flex;align-items:baseline;gap:8px;padding:0 16px;height:44px;border-radius:999px;background:var(--soft);border:1px solid rgba(108,76,241,.14)}
.badge b{font-size:22px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums}
.badge span{font-size:13px;color:var(--ink-600)}

/* ============ article page ============ */
.page-hero{position:relative;padding:36px 0 26px;background:
  radial-gradient(900px 320px at 88% -30%,rgba(43,183,232,.16),transparent 70%),
  radial-gradient(700px 300px at 6% -20%,rgba(108,76,241,.14),transparent 72%),
  #fff;border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:18px}
.breadcrumb a{color:var(--ink-600);font-weight:600;transition:.2s ease}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--ink-400);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:860px}
.article-head h1{font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.18;letter-spacing:-.02em;margin-bottom:16px}
.article-lead{font-size:16px;line-height:1.8;color:var(--ink-600);margin-bottom:20px}
.meta-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ink-400)}
.meta-line .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.author-chip{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--ink-600)}
.author-chip .avatar{width:26px;height:26px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:11px;font-weight:800}

.article-section{padding:34px 0 10px}
@media(min-width:768px){.article-section{padding:48px 0 16px}}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;align-items:start}
@media(min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:40px}}
.article-main{min-width:0}
.article-panel{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:22px 20px}
@media(min-width:768px){.article-panel{padding:36px 40px}}
.article-cover{margin:0 0 24px;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line);background:linear-gradient(120deg,rgba(108,76,241,.12),rgba(43,183,232,.12))}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-body{max-width:760px;font-size:17px;line-height:1.85;color:var(--ink-600)}
.article-body > * + *{margin-top:1.15em}
.article-body h2{font-size:26px;font-weight:700;margin-top:40px;margin-bottom:16px;position:relative;padding-left:16px}
.article-body h2::before{content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:4px;border-radius:4px;background:var(--grad)}
.article-body h3{font-size:20px;font-weight:700;margin-top:28px;margin-bottom:10px}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.article-body ul,.article-body ol{margin-top:14px}
.article-body ul li{position:relative;padding-left:22px;margin-top:10px}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.68em;width:8px;height:8px;border-radius:2px;background:var(--brand-600)}
.article-body ol{list-style:none;counter-reset:item}
.article-body ol li{position:relative;padding-left:34px;margin-top:10px;counter-increment:item}
.article-body ol li::before{content:counter(item);position:absolute;left:0;top:.2em;width:22px;height:22px;border-radius:7px;background:var(--soft);color:var(--brand-600);font-size:12px;font-weight:800;display:grid;place-items:center}
.article-body blockquote{margin:24px 0;padding:16px 22px;border-left:4px solid var(--brand-500);background:#F5F3FE;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--ink-900)}
.article-body img{border-radius:16px;margin:24px 0;width:100%}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--line);text-align:left}
.article-body th{background:#F7F6FB;color:var(--ink-900);font-weight:700}
.article-body tbody tr:nth-child(even){background:#FBFAFE}
.article-body strong{color:var(--ink-900)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

.empty-state{text-align:center;padding:56px 20px}
.empty-state .cloud{width:64px;height:64px;margin:0 auto 16px;border-radius:20px;display:grid;place-items:center;background:var(--soft);color:var(--brand-600)}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{font-size:15px;margin-bottom:20px}

/* sidebar */
.article-aside{display:none}
@media(min-width:1024px){.article-aside{display:block}}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-card);padding:20px;margin-bottom:20px}
.side-card h3{font-size:16px;margin-bottom:12px}
.side-links{display:flex;flex-direction:column;gap:4px}
.side-links a{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;border-radius:12px;font-size:14px;font-weight:600;color:var(--ink-600);background:#FBFAFE;transition:.2s ease}
.side-links a:hover{color:var(--brand-600);background:var(--soft);transform:translateX(2px)}
.side-links a span{color:var(--ink-400);font-size:13px}
.side-card.grad{background:var(--grad);border-color:transparent;color:rgba(255,255,255,.9)}
.side-card.grad h3{color:#fff}
.side-card.grad p{font-size:14px;line-height:1.7;margin-bottom:14px}
.side-card.grad .side-note{font-size:12px;color:rgba(255,255,255,.82)}
.btn-light{background:#fff;color:var(--brand-600);border-color:#fff}
.btn-light:hover{filter:brightness(1.03);transform:translateY(-2px)}

/* ============ blocks ============ */
.section{padding:44px 0}
@media(min-width:768px){.section{padding:72px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px}
.section-head h2{font-size:clamp(22px,3.2vw,32px);font-weight:800;letter-spacing:-.01em}
.section-head p{margin-top:8px;font-size:15px;color:var(--ink-600);max-width:640px}
.text-link{font-size:14px;font-weight:700;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;transition:.2s ease}
.text-link:hover{gap:10px}

.grid-3{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-card);padding:24px;transition:.25s ease;display:flex;flex-direction:column;height:100%}
.card:hover{transform:translateY(-4px);border-color:rgba(108,76,241,.35);box-shadow:0 22px 44px -22px rgba(76,60,220,.4)}
.card h3{font-size:19px;margin-bottom:10px}
.card p{font-size:15px;color:var(--ink-600)}
.card .card-icon{width:44px;height:44px;border-radius:14px;background:var(--soft);color:var(--brand-600);display:grid;place-items:center;margin-bottom:16px}
.card .num-tag{font-size:13px;font-weight:800;color:var(--brand-600);letter-spacing:.08em;margin-bottom:10px}

.related-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-card);transition:.25s ease;display:flex;flex-direction:column;height:100%}
.related-card:hover{transform:translateY(-4px);border-color:rgba(108,76,241,.35);box-shadow:0 22px 44px -22px rgba(76,60,220,.4)}
.related-card .thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(120deg,rgba(108,76,241,.14),rgba(43,183,232,.16))}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.related-card:hover .thumb img{transform:scale(1.04)}
.related-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-card h3{font-size:17px;line-height:1.5}
.related-card p{font-size:14px;color:var(--ink-600)}
.related-card .meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-400);margin-top:auto}

.cta-band{position:relative;overflow:hidden;border-radius:var(--radius-lg);background:var(--grad);color:#fff;padding:32px 24px;box-shadow:0 30px 60px -34px rgba(76,60,220,.75)}
@media(min-width:768px){.cta-band{padding:44px 48px}}
.cta-band::after{content:"";position:absolute;right:-60px;top:-70px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.14)}
.cta-band::before{content:"";position:absolute;left:-40px;bottom:-90px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.1)}
.cta-inner{position:relative;z-index:2;display:grid;gap:26px;align-items:center}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.15fr .85fr}}
.cta-band h2{color:#fff;font-size:clamp(22px,3.2vw,30px);font-weight:800;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.9);font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
.cta-panel{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.32);border-radius:var(--radius-md);padding:20px}
.cta-panel h3{color:#fff;font-size:17px;margin-bottom:8px}
.cta-panel p{font-size:14px;color:rgba(255,255,255,.88);margin-bottom:14px}
.cta-list{display:flex;flex-direction:column;gap:8px;font-size:14px;color:rgba(255,255,255,.92)}
.cta-list span{display:flex;align-items:center;gap:8px}

.back-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* ============ footer ============ */
.site-footer{position:relative;background:#F2F1FA;margin-top:40px;padding-top:3px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad)}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;padding:40px 0 24px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding:52px 0 30px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{font-size:16px}
.footer-about{font-size:14px;line-height:1.8;color:var(--ink-600);max-width:320px}
.footer-col h4{font-size:15px;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--ink-600);transition:.2s ease;width:fit-content}
.footer-links a:hover{color:var(--brand-600)}
.footer-contact{font-size:14px;line-height:1.9;color:var(--ink-600)}
.footer-contact b{color:var(--ink-900);font-weight:600}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;border-top:1px solid rgba(26,26,46,.08);padding:16px 0 26px;font-size:13px;color:var(--ink-400)}
.foot-links{display:flex;flex-wrap:wrap;gap:14px}
.foot-links a{color:var(--ink-400);transition:.2s ease}
.foot-links a:hover{color:var(--brand-600)}

/* roulang page: category2 */
:root{
  --brand-600:#6C4CF1;
  --brand-500:#7E63F5;
  --cyan-500:#2BB7E8;
  --mint-500:#12B886;
  --accent-500:#FF7A45;
  --bg-page:#F7F6FB;
  --bg-card:#FFFFFF;
  --ink-900:#1A1A2E;
  --ink-600:#5A5A72;
  --ink-400:#8B8BA0;
  --line:#EAE8F5;
  --footer-bg:#F2F1FA;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-card:0 14px 34px -18px rgba(76,60,220,.28);
  --shadow-hover:0 22px 44px -20px rgba(76,60,220,.42);
  --grad-brand:linear-gradient(120deg,#6C4CF1 0%,#7E63F5 45%,#2BB7E8 100%);
}
*,*::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","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg-page);
  color:var(--ink-600);
  font-size:16.5px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.25;font-weight:700}
h1{font-size:clamp(32px,5vw,56px);font-weight:800;line-height:1.15;letter-spacing:-0.02em}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:clamp(19px,2vw,23px)}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
@media(min-width:640px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}
.section{padding:56px 0}
@media(min-width:768px){.section{padding:88px 0}}
.section-tight{padding:44px 0}
@media(min-width:768px){.section-tight{padding:64px 0}}
.grad-text{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand-600);outline-offset:2px;border-radius:8px;
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 24px -18px rgba(76,60,220,.38)}
.header-inner{display:flex;align-items:center;gap:16px;height:64px}
@media(min-width:768px){.header-inner{height:72px;gap:24px}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{
  width:34px;height:34px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad-brand);color:#fff;flex-shrink:0;
  box-shadow:0 8px 18px -10px rgba(108,76,241,.85);
}
.brand-text{font-weight:800;font-size:16.5px;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:none;align-items:center;gap:4px;margin-left:8px}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-link{
  display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:999px;
  font-size:15px;color:var(--ink-600);transition:color .2s ease,background .2s ease;white-space:nowrap;
}
.nav-link:hover{color:var(--brand-600);background:rgba(108,76,241,.07)}
.nav-link.active{color:var(--brand-600);background:rgba(108,76,241,.10);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-search{
  display:none;align-items:center;gap:8px;height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
@media(min-width:1100px){.nav-search{display:inline-flex;width:216px}}
.nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(108,76,241,.14)}
.nav-search svg{flex-shrink:0;color:var(--ink-400)}
.nav-search input{border:0;outline:0;background:transparent;width:100%;font-size:14.5px}
.nav-search input::placeholder{color:var(--ink-400)}
.login-link{display:none;font-size:15px;color:var(--ink-600);padding:0 6px;transition:color .2s ease}
@media(min-width:768px){.login-link{display:inline-flex}}
.login-link:hover{color:var(--brand-600)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;cursor:pointer;
  font-weight:600;font-size:15.5px;padding:12px 24px;min-height:44px;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .2s ease,border-color .2s ease,filter .2s ease;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 14px 28px -16px rgba(76,60,220,.85)}
.btn-primary:hover{filter:brightness(1.05);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:rgba(108,76,241,.42)}
.btn-ghost:hover{background:rgba(108,76,241,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{padding:9px 18px;font-size:14.5px;min-height:40px}
.btn-block{width:100%}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
  color:var(--ink-900);cursor:pointer;
}
@media(min-width:1024px){.menu-toggle{display:none}}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:16px 0 22px;
}
.mobile-drawer.open{display:block}
@media(min-width:1024px){.mobile-drawer{display:none !important}}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;margin-bottom:14px;
  border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg-page);
}
.drawer-search input{border:0;background:transparent;outline:0;width:100%;font-size:15px}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:16px}
.drawer-links a{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:var(--radius-sm);
  color:var(--ink-900);font-size:16px;font-weight:600;
}
.drawer-links a.active{background:rgba(108,76,241,.10);color:var(--brand-600)}

/* ============ 通用组件 ============ */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:12px;background:#fff;border:1px solid var(--line);
  font-size:13.5px;color:var(--ink-600);transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{background:rgba(108,76,241,.08);color:var(--brand-600);border-color:rgba(108,76,241,.3)}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--brand-600);background:rgba(108,76,241,.10);
}
.tag-mint{color:#0b8d67;background:rgba(18,184,134,.13)}
.tag-cyan{color:#1a7fa8;background:rgba(43,183,232,.14)}
.tag-accent{color:#c1502a;background:rgba(255,122,69,.14)}
.badge-row{display:flex;gap:12px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.badge-row::-webkit-scrollbar{display:none}
.stat-badge{
  flex:0 0 auto;display:flex;align-items:center;gap:10px;
  padding:10px 18px;border-radius:999px;background:rgba(108,76,241,.08);
  border:1px solid rgba(108,76,241,.14);
}
.stat-badge b{font-size:22px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1}
.stat-badge span{font-size:13px;color:var(--ink-600);white-space:nowrap}
.card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.32)}
.card-pad{padding:24px}
@media(min-width:768px){.card-pad{padding:30px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:700;
  color:var(--brand-600);letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad-brand)}
.sec-head{margin-bottom:32px;max-width:760px}
.sec-head p{margin-top:12px;font-size:16.5px;color:var(--ink-600)}
.sec-head.row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;max-width:none}
.more-link{font-size:15px;font-weight:600;color:var(--brand-600);white-space:nowrap}
.more-link:hover{text-decoration:underline;text-underline-offset:4px}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#F4F1FE 0%,#F7F6FB 52%,#EEF7FC 100%);
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.16) 0%,rgba(108,76,241,0) 68%);pointer-events:none;
}
.hero-inner{
  position:relative;z-index:1;display:grid;gap:36px;align-items:center;
  padding:48px 0 56px;
}
@media(min-width:1024px){
  .hero-inner{grid-template-columns:1.05fr .95fr;gap:56px;padding:72px 0 84px}
}
.hero-title{max-width:640px}
.hero-copy{font-size:17px;line-height:1.8;color:var(--ink-600);margin-top:18px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
@media(max-width:520px){.hero-actions .btn{width:100%}}
.hero-badges{margin-top:28px}
.hero-visual{position:relative}
.hero-media{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);background:linear-gradient(140deg,rgba(108,76,241,.14),rgba(43,183,232,.18));
}
.hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
@media(min-width:1024px){.hero-media img{aspect-ratio:5/4}}
.float-card{
  position:absolute;right:12px;bottom:-18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-md);box-shadow:var(--shadow-hover);padding:14px 18px;display:flex;align-items:center;gap:12px;
}
@media(min-width:768px){.float-card{right:-14px;bottom:-22px;padding:16px 22px}}
.float-card b{font-size:24px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1}
.float-card span{font-size:13px;color:var(--ink-600);white-space:nowrap}
.crumb{font-size:13.5px;color:var(--ink-400);margin-bottom:18px}
.crumb a{color:var(--ink-400)}
.crumb a:hover{color:var(--brand-600)}
.crumb span{margin:0 8px}

/* ============ 交替图文条 ============ */
.rows{display:flex;flex-direction:column;gap:24px}
.scene-row{
  display:grid;gap:0;overflow:hidden;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scene-row:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3)}
@media(min-width:900px){
  .scene-row{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
  .scene-row.flip .scene-media{order:2}
  .scene-row.flip .scene-body{order:1}
}
.scene-media{position:relative;background:linear-gradient(140deg,rgba(108,76,241,.16),rgba(43,183,232,.16));min-height:220px}
.scene-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
@media(min-width:900px){.scene-media img{height:100%;aspect-ratio:auto;min-height:100%}}
.scene-index{
  position:absolute;left:18px;top:18px;padding:5px 13px;border-radius:999px;
  background:rgba(255,255,255,.92);color:var(--brand-600);font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.scene-body{padding:24px}
@media(min-width:768px){.scene-body{padding:34px 36px}}
.scene-body h3{margin:14px 0 10px}
.scene-body p{font-size:16px;color:var(--ink-600)}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.check-list li{display:flex;gap:10px;font-size:15.5px;color:var(--ink-600);line-height:1.7}
.check-list li svg{flex-shrink:0;margin-top:5px;color:var(--mint-500)}
.scene-meta{margin-top:20px;display:flex;flex-wrap:wrap;gap:10px}

/* ============ 双列对照 ============ */
.duo{display:grid;gap:22px}
@media(min-width:860px){.duo{grid-template-columns:1fr 1fr}}
.panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
@media(min-width:768px){.panel{padding:32px}}
.panel:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3)}
.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.panel-icon{
  width:42px;height:42px;border-radius:13px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(108,76,241,.1);color:var(--brand-600);flex-shrink:0;
}
.panel-icon.cyan{background:rgba(43,183,232,.14);color:#1a7fa8}
.number-list{counter-reset:n;display:flex;flex-direction:column;gap:14px}
.number-list li{
  position:relative;padding-left:40px;font-size:16px;color:var(--ink-600);line-height:1.7;
}
.number-list li::before{
  counter-increment:n;content:counter(n,decimal-leading-zero);
  position:absolute;left:0;top:2px;width:28px;height:28px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(108,76,241,.1);color:var(--brand-600);font-size:12.5px;font-weight:800;
  font-variant-numeric:tabular-nums;
}
.panel strong{color:var(--ink-900)}

/* ============ 芯片墙 ============ */
.chip-wall{display:flex;flex-wrap:wrap;gap:10px}
.chip-wall .chip{font-size:14px;padding:8px 16px}

/* ============ 三步流程 ============ */
.flow{display:grid;gap:20px}
@media(min-width:820px){.flow{grid-template-columns:repeat(3,1fr);gap:24px}}
.flow-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 24px 26px;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.32)}
.flow-num{
  display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:14px;
  background:var(--grad-brand);color:#fff;font-size:16px;font-weight:800;
  font-variant-numeric:tabular-nums;margin-bottom:16px;
  box-shadow:0 12px 22px -14px rgba(76,60,220,.9);
}
.flow-card h3{font-size:19px;margin-bottom:8px}
.flow-card p{font-size:15.5px}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px}
details.faq{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:0 20px;transition:border-color .25s ease,background .25s ease,box-shadow .25s ease;
}
details.faq:hover{border-color:rgba(108,76,241,.3)}
details.faq[open]{background:#FDFCFF;border-color:rgba(108,76,241,.38);box-shadow:var(--shadow-card)}
details.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:17px;font-weight:600;color:var(--ink-900);min-height:44px;
}
details.faq summary::-webkit-details-marker{display:none}
.faq-mark{
  position:relative;flex-shrink:0;width:26px;height:26px;border-radius:9px;
  background:rgba(108,76,241,.1);color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform .2s ease,background .2s ease;
}
details.faq[open] .faq-mark{transform:rotate(180deg);background:rgba(108,76,241,.18)}
.faq-body{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--ink-600);max-width:860px}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--grad-brand);color:#fff;padding:34px 24px;box-shadow:0 26px 50px -28px rgba(76,60,220,.9);
}
@media(min-width:768px){.cta-band{padding:48px}}
.cta-band::before{
  content:"";position:absolute;left:-80px;bottom:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22) 0%,rgba(255,255,255,0) 70%);
}
.cta-grid{position:relative;z-index:1;display:grid;gap:30px}
@media(min-width:980px){.cta-grid{grid-template-columns:1fr 1fr;gap:48px;align-items:start}}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.9);margin-top:14px;font-size:16.5px}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:15.5px;color:rgba(255,255,255,.95)}
.cta-points li svg{flex-shrink:0}
.form-card{
  background:#fff;border-radius:var(--radius-lg);padding:22px;box-shadow:0 24px 46px -26px rgba(20,10,60,.7);
}
@media(min-width:768px){.form-card{padding:28px}}
.field{margin-bottom:14px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:7px}
.field input,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;font-size:15.5px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:92px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-400)}
.field input:focus,.field textarea:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(108,76,241,.16)}
.field input:invalid:not(:placeholder-shown),.field textarea:invalid:not(:placeholder-shown){border-color:var(--accent-500)}
.form-note{font-size:12.5px;color:var(--ink-400);margin-top:12px;line-height:1.7}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--footer-bg);border-top:3px solid transparent;
  border-image:var(--grad-brand) 1;margin-top:0;padding-top:44px;
}
.footer-grid{display:grid;gap:28px;grid-template-columns:1fr 1fr;padding-bottom:32px}
@media(min-width:900px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}}
.footer-col h4{font-size:15.5px;margin-bottom:14px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-icon{width:32px;height:32px;border-radius:10px}
.footer-brand .brand-text{font-size:16px}
.footer-about{font-size:14px;line-height:1.8;color:var(--ink-600);max-width:360px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14.5px;color:var(--ink-600);transition:color .2s ease}
.footer-links a:hover{color:var(--brand-600)}
.footer-contact{font-size:14px;line-height:1.95;color:var(--ink-600)}
.footer-contact b{color:var(--ink-900);font-weight:600}
.footer-bottom{
  border-top:1px solid rgba(108,76,241,.14);padding:16px 0 22px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  font-size:13.5px;color:var(--ink-400);
}
.foot-links{display:flex;flex-wrap:wrap;gap:16px}
.foot-links a{color:var(--ink-400)}
.foot-links a:hover{color:var(--brand-600)}

/* roulang page: category1 */
:root{
  --brand-600:#6C4CF1;
  --brand-500:#7E63F5;
  --cyan-500:#2BB7E8;
  --mint-500:#12B886;
  --accent-500:#FF7A45;
  --bg-page:#F7F6FB;
  --bg-card:#FFFFFF;
  --ink-900:#1A1A2E;
  --ink-600:#5A5A72;
  --ink-400:#8B8BA0;
  --line:#EAE8F5;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-card:0 14px 34px -18px rgba(76,60,220,.28);
  --shadow-hover:0 22px 44px -20px rgba(76,60,220,.42);
  --gradient-brand:linear-gradient(120deg,#6C4CF1 0%,#7E63F5 45%,#2BB7E8 100%);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-900);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .25s ease,background-color .25s ease,border-color .25s ease}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}
::selection{background:rgba(108,76,241,.18)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
@media (min-width:640px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(26,26,46,.45);background:rgba(255,255,255,.97)}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
@media (min-width:768px){.header-inner{height:72px}}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-icon{
  width:36px;height:36px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--gradient-brand);color:#fff;box-shadow:0 8px 18px -10px rgba(108,76,241,.85);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:none;align-items:center;gap:4px;margin-left:8px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:15px;color:var(--ink-600);font-weight:500;white-space:nowrap;
}
.nav-link:hover{color:var(--brand-600);background:rgba(108,76,241,.07)}
.nav-link.active{color:var(--brand-600);background:rgba(108,76,241,.1);font-weight:700}
.header-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{
  display:none;align-items:center;gap:8px;height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:#fff;min-width:220px;
  transition:border-color .25s ease,box-shadow .25s ease;
}
@media (min-width:1200px){.search-box{display:flex}}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(108,76,241,.14)}
.search-box input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--ink-900)}
.search-box input::placeholder{color:var(--ink-400)}
.login-link{display:none;font-size:15px;color:var(--ink-600);padding:8px 6px}
@media (min-width:768px){.login-link{display:inline-block}}
.login-link:hover{color:var(--brand-600)}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
}
.menu-toggle:hover{border-color:var(--brand-500);color:var(--brand-600)}
@media (min-width:1024px){.menu-toggle{display:none}}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:700;
  transition:transform .25s ease,box-shadow .25s ease,background-color .25s ease,border-color .25s ease,filter .25s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--gradient-brand);color:#fff;box-shadow:0 14px 26px -14px rgba(108,76,241,.8)}
.btn-primary:hover{filter:brightness(1.05);transform:translateY(-2px);box-shadow:0 18px 30px -14px rgba(108,76,241,.85)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:#fff;color:var(--brand-600);border:1px solid rgba(108,76,241,.4)}
.btn-ghost:hover{background:rgba(108,76,241,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
@media (max-width:639px){.btn-block-mobile{width:100%}}

/* 移动端抽屉 */
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:16px;box-shadow:0 18px 30px -24px rgba(26,26,46,.5);
}
.mobile-drawer.open{display:block}
.mobile-drawer .search-box{display:flex;min-width:0;width:100%;margin-bottom:14px}
.mobile-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.mobile-nav a{padding:12px 14px;border-radius:12px;font-size:16px;color:var(--ink-600);border:1px solid transparent}
.mobile-nav a:hover{background:rgba(108,76,241,.07);color:var(--brand-600)}
.mobile-nav a.active{background:rgba(108,76,241,.1);color:var(--brand-600);font-weight:700;border-color:rgba(108,76,241,.24)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 460px at 88% -10%,rgba(43,183,232,.16),transparent 62%),
    radial-gradient(760px 420px at 4% 6%,rgba(108,76,241,.14),transparent 60%),
    var(--bg-page);
  padding:44px 0 56px;
}
@media (min-width:768px){.hero{padding:64px 0 84px}}
@media (min-width:1024px){.hero{padding:76px 0 96px}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.06fr .94fr;gap:52px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;border-radius:999px;
  background:rgba(108,76,241,.09);color:var(--brand-600);font-size:13px;font-weight:700;letter-spacing:.02em;
  border:1px solid rgba(108,76,241,.16);
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--gradient-brand)}
.hero h1{
  margin:18px 0 0;font-size:clamp(30px,4.6vw,52px);line-height:1.15;letter-spacing:-.02em;font-weight:800;
}
.hero h1 .hl{color:var(--brand-600)}
.hero-sub{margin-top:18px;font-size:16px;line-height:1.8;color:var(--ink-600);max-width:600px}
@media (min-width:768px){.hero-sub{font-size:17px}}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.badge-row{display:flex;gap:12px;margin-top:32px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
.badge-item{
  flex:0 0 auto;display:flex;flex-direction:column;justify-content:center;
  min-width:132px;padding:12px 16px;border-radius:var(--radius-md);
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.badge-item .num{font-size:22px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1.2}
.badge-item .cap{font-size:13px;color:var(--ink-400);white-space:nowrap}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;height:280px;object-fit:cover;border-radius:var(--radius-lg);
  border:1px solid var(--line);box-shadow:0 30px 60px -34px rgba(26,26,46,.5);
}
@media (min-width:768px){.hero-visual img{height:360px}}
@media (min-width:1024px){.hero-visual img{height:440px}}
.float-card{
  position:absolute;left:18px;bottom:-20px;width:min(260px,80%);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:14px 16px;box-shadow:var(--shadow-hover);
}
.float-card .fc-title{font-size:13px;color:var(--ink-400)}
.float-card .fc-value{font-size:20px;font-weight:800;color:var(--ink-900);font-variant-numeric:tabular-nums;margin-top:2px}
.float-card .fc-sub{font-size:13px;color:var(--mint-500);font-weight:600;margin-top:2px}

/* ---------- 通用板块 ---------- */
.section{padding:52px 0}
@media (min-width:768px){.section{padding:76px 0}}
@media (min-width:1024px){.section{padding:88px 0}}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:32px}
@media (min-width:768px){.section-head{margin-bottom:44px}}
.section-tag{
  display:inline-block;padding:5px 12px;border-radius:999px;font-size:13px;font-weight:700;color:var(--brand-600);
  background:rgba(108,76,241,.09);border:1px solid rgba(108,76,241,.16);
}
.section-head h2{margin-top:14px;font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:12px;color:var(--ink-600);font-size:16px}
.head-row{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between}
.text-link{color:var(--brand-600);font-weight:700;font-size:15px;border-bottom:1px solid rgba(108,76,241,.3);padding-bottom:2px}
.text-link:hover{border-color:var(--brand-600)}

/* ---------- 对比表 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-card)}
table.compare{width:100%;border-collapse:collapse;min-width:720px}
table.compare th,table.compare td{padding:16px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--line)}
table.compare thead th{
  background:rgba(108,76,241,.06);color:var(--ink-900);font-weight:700;font-size:14px;white-space:nowrap;
}
table.compare tbody tr:nth-child(even){background:#FCFBFF}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody tr:hover{background:rgba(108,76,241,.05)}
table.compare td:first-child{font-weight:700;color:var(--ink-900)}
table.compare td{color:var(--ink-600)}
.chip{
  display:inline-block;padding:3px 10px;border-radius:12px;font-size:13px;font-weight:600;
  background:rgba(43,183,232,.12);color:#1B7FA6;
}
.chip-mint{background:rgba(18,184,134,.13);color:#0B7A59}
.chip-accent{background:rgba(255,122,69,.14);color:#C24C1C}

/* ---------- 双列图文卡 ---------- */
.duo-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:900px){.duo-grid{grid-template-columns:1fr 1fr;gap:26px}}
.card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.35)}
.card-media{position:relative;background:linear-gradient(135deg,rgba(108,76,241,.16),rgba(43,183,232,.18))}
.card-media img{width:100%;height:200px;object-fit:cover}
@media (min-width:768px){.card-media img{height:224px}}
.card-body{padding:24px}
@media (min-width:768px){.card-body{padding:28px}}
.card-body h3{font-size:21px;font-weight:700;line-height:1.35}
.card-body .card-desc{margin-top:10px;color:var(--ink-600);font-size:15.5px}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:var(--ink-600)}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:10px;height:10px;border-radius:3px;background:var(--gradient-brand);
}
.check-list li b{color:var(--ink-900)}

/* ---------- 流程编号 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:20px;counter-reset:step}
@media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr);gap:22px}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:26px 22px 22px;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.35)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;
  font-size:16px;font-weight:800;color:#fff;background:var(--gradient-brand);font-variant-numeric:tabular-nums;
  box-shadow:0 10px 20px -12px rgba(108,76,241,.9);
}
.step-card h3{margin-top:16px;font-size:18px;font-weight:700}
.step-card p{margin-top:8px;font-size:14.5px;color:var(--ink-600)}
.step-card .step-meta{margin-top:14px;font-size:13px;color:var(--brand-600);font-weight:600}

/* ---------- 左说明 + 右清单 ---------- */
.split{display:grid;grid-template-columns:1fr;gap:28px;align-items:start}
@media (min-width:1024px){.split{grid-template-columns:.85fr 1.15fr;gap:48px}}
.pain-list{display:flex;flex-direction:column;gap:14px}
.pain-item{
  display:flex;gap:14px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:0 10px 26px -22px rgba(26,26,46,.5);transition:border-color .25s ease,transform .25s ease;
}
.pain-item:hover{border-color:rgba(108,76,241,.35);transform:translateY(-2px)}
.pain-icon{
  flex:0 0 auto;width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(108,76,241,.1);color:var(--brand-600);font-weight:800;font-size:14px;
}
.pain-item h3{font-size:16.5px;font-weight:700}
.pain-item p{margin-top:6px;font-size:14.5px;color:var(--ink-600)}

.note-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;
  box-shadow:var(--shadow-card);
}
.note-card .note-kv{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.kv-chip{
  padding:8px 14px;border-radius:12px;background:rgba(108,76,241,.08);color:var(--brand-600);
  font-size:13.5px;font-weight:600;border:1px solid rgba(108,76,241,.14);
}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:0 10px 26px -24px rgba(26,26,46,.6);overflow:hidden;transition:border-color .25s ease,background-color .25s ease;
}
.faq-item[open]{border-color:rgba(108,76,241,.4);background:#FCFBFF}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--ink-900);cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:26px;height:26px;line-height:24px;text-align:center;border-radius:50%;
  background:rgba(108,76,241,.1);color:var(--brand-600);font-size:18px;font-weight:700;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"–";transform:rotate(180deg)}
.faq-item .faq-answer{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--ink-600)}

/* ---------- CTA ---------- */
.cta{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);padding:32px 24px;
  background:var(--gradient-brand);color:#fff;box-shadow:0 30px 60px -30px rgba(76,60,220,.7);
}
@media (min-width:768px){.cta{padding:44px 40px}}
.cta::after{
  content:"";position:absolute;inset:auto -60px -80px auto;width:320px;height:320px;border-radius:50%;
  background:rgba(255,255,255,.12);
}
.cta-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:1024px){.cta-grid{grid-template-columns:1fr .95fr;gap:44px;align-items:center}}
.cta h2{font-size:clamp(23px,3vw,32px);font-weight:800;line-height:1.25;letter-spacing:-.01em}
.cta p{margin-top:12px;font-size:15.5px;color:rgba(255,255,255,.9);max-width:520px}
.cta-points{margin-top:20px;display:flex;flex-wrap:wrap;gap:10px}
.cta-points span{
  padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.16);font-size:13.5px;font-weight:600;
  border:1px solid rgba(255,255,255,.28);
}
.form-card{background:#fff;border-radius:var(--radius-md);padding:22px;box-shadow:0 24px 50px -26px rgba(0,0,0,.45)}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-600);margin-bottom:6px}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);padding:11px 14px;
  font-size:15px;background:#fff;transition:border-color .25s ease,box-shadow .25s ease;outline:none;
}
.field textarea{min-height:92px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(108,76,241,.14)}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-400)}
.form-tip{margin-top:12px;font-size:12.5px;color:var(--ink-400);line-height:1.7}
.form-error{border-color:var(--accent-500)!important;box-shadow:0 0 0 3px rgba(255,122,69,.16)!important}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:64px;background:#F2F1FA;border-top:3px solid transparent;
  border-image:var(--gradient-brand) 1;position:relative;
}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:28px;padding:44px 0 32px;
}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding:56px 0 40px}}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-icon{background:var(--gradient-brand)}
.footer-brand .brand-text{font-size:16px;font-weight:800}
.footer-about{margin-top:14px;font-size:14px;color:var(--ink-600);max-width:340px;line-height:1.8}
.footer-col h4{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--ink-600)}
.footer-links a:hover{color:var(--brand-600)}
.footer-contact{font-size:14px;color:var(--ink-600);line-height:2}
.footer-contact b{color:var(--ink-900);font-weight:600}
.footer-bottom{
  border-top:1px solid rgba(26,26,46,.08);padding:18px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-400);
}
.foot-links{display:flex;flex-wrap:wrap;gap:16px}
.foot-links a{color:var(--ink-400)}
.foot-links a:hover{color:var(--brand-600)}