/* roulang page: index */
:root{
  --brand-600:#1A5FD0;
  --brand-700:#1349A6;
  --brand-50:#EEF4FF;
  --accent-500:#FF7A1A;
  --accent-600:#E96A0C;
  --accent-50:#FFF3E8;
  --teal-500:#0E9F8A;
  --teal-50:#E7F7F4;
  --amber-500:#E0A106;
  --amber-50:#FDF6E3;
  --red-500:#E2453C;
  --ink-900:#0F1B2D;
  --ink-600:#4A5B70;
  --ink-400:#8595A8;
  --line:#E3EAF3;
  --bg:#F6F9FD;
  --surface:#FFFFFF;
  --footer:#0E1B2E;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(16,24,40,.05),0 12px 28px -14px rgba(24,58,120,.18);
  --shadow-card-hover:0 2px 4px rgba(16,24,40,.06),0 18px 36px -16px rgba(24,58,120,.26);
  --shadow-btn:0 8px 18px -8px rgba(26,95,208,.45);
  --shadow-accent:0 8px 18px -8px rgba(255,122,26,.55);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,transform .18s ease;}
a:hover{color:var(--brand-700);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============ 顶条公告 ============ */
.topbar{
  background:linear-gradient(90deg,#0F2851 0%,#1349A6 100%);
  color:#D9E6FF;
  font-size:13px;
  line-height:36px;
  height:36px;
  overflow:hidden;
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px;}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0;}
.topbar-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(14,159,138,.18);
  border:1px solid rgba(14,159,138,.5);
  color:#7BE3D2;
  border-radius:999px;
  padding:0 10px;
  height:22px;
  font-size:12px;
  white-space:nowrap;
}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:#31D6B8;box-shadow:0 0 0 3px rgba(49,214,184,.18);}
.topbar-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:8px;white-space:nowrap;color:#A9C2E8;}
.topbar-right b{color:#FFFFFF;font-weight:600;font-variant-numeric:tabular-nums;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px -18px rgba(16,40,84,.35);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink-900);letter-spacing:-.02em;}
.logo:hover{color:var(--ink-900);}
.logo-mark{
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(140deg,var(--brand-600),#3C86F0);
  display:grid;place-items:center;
  box-shadow:0 6px 14px -6px rgba(26,95,208,.7);
  flex:0 0 auto;
}
.logo-mark span{width:12px;height:12px;border-radius:3px;background:var(--accent-500);display:block;}
.logo-text{white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--brand-600);}

.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:999px;
  font-size:15px;color:var(--ink-600);font-weight:500;
  white-space:nowrap;
}
.nav-links a:hover{color:var(--brand-600);background:var(--brand-50);}
.nav-links a.active{color:var(--brand-600);background:var(--brand-50);font-weight:600;box-shadow:inset 0 -2px 0 var(--brand-600);}

.nav-actions{display:flex;align-items:center;gap:12px;}
.status-chip{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:999px;
  background:var(--teal-50);color:#0B7D6C;font-size:12px;font-weight:600;white-space:nowrap;
}
.status-chip i{width:6px;height:6px;border-radius:50%;background:var(--teal-500);display:block;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:var(--shadow-accent);}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-700);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-lg{height:50px;padding:0 26px;font-size:16px;}
.btn-block{width:100%;}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none;}

.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.45);opacity:0;visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:340px;background:#fff;z-index:80;
  transform:translateX(102%);transition:transform .26s ease;
  padding:18px;display:flex;flex-direction:column;gap:6px;
  box-shadow:-20px 0 48px -24px rgba(16,40,84,.5);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);}
.drawer-title{font-size:16px;font-weight:700;color:var(--ink-900);}
.drawer-close{width:38px;height:38px;border-radius:10px;background:var(--brand-50);color:var(--brand-600);font-size:18px;line-height:1;display:grid;place-items:center;}
.drawer nav{display:flex;flex-direction:column;padding-top:8px;}
.drawer nav a{
  font-size:16px;line-height:52px;height:52px;color:var(--ink-600);
  border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;
}
.drawer nav a.active{color:var(--brand-600);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:16px;display:flex;flex-direction:column;gap:12px;}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-600);
  background:var(--brand-50);border-radius:999px;padding:5px 12px;margin-bottom:16px;
}
.eyebrow.orange{color:var(--accent-600);background:var(--accent-50);}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:700;}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;}
h3{font-size:18px;line-height:1.4;font-weight:600;}
.section-head p{margin-top:14px;font-size:16px;color:var(--ink-600);max-width:42ch;}
.section-head.center p{margin-left:auto;margin-right:auto;max-width:60ch;}

.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:24px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(26,95,208,.28);}

.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1;white-space:nowrap;}
.badge-brand{background:var(--brand-50);color:var(--brand-600);}
.badge-accent{background:var(--accent-50);color:var(--accent-600);}
.badge-teal{background:var(--teal-50);color:#0B7D6C;}
.badge-amber{background:var(--amber-50);color:#9C7105;}

/* ============ Hero ============ */
.hero{
  position:relative;
  background:linear-gradient(160deg,#F6F9FD 0%,#EEF4FF 100%);
  padding:72px 0 80px;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(26,95,208,.14),rgba(26,95,208,0) 68%);
  top:-140px;right:-90px;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,26,.12),rgba(255,122,26,0) 70%);
  bottom:-160px;left:-80px;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.hero h1{margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--brand-600);}
.hero-sub{font-size:17px;line-height:1.75;color:var(--ink-600);max-width:46ch;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;padding-top:22px;border-top:1px dashed var(--line);}
.hero-point{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--ink-600);}
.hero-point i{
  width:24px;height:24px;border-radius:8px;background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;font-size:12px;font-style:normal;font-weight:700;flex:0 0 auto;
}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius-lg);
  box-shadow:0 24px 60px -28px rgba(16,40,84,.55);
  background:var(--brand-50);
}
.float-card{
  position:absolute;left:-14px;bottom:-26px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:0 18px 40px -20px rgba(16,40,84,.42);
  padding:16px 18px;width:min(300px,84%);
}
.float-card .fc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.float-card strong{display:block;font-size:15px;color:var(--ink-900);margin-bottom:4px;}
.float-card p{font-size:13px;color:var(--ink-400);line-height:1.6;}

/* ============ 三步上手 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;}
.step-card{display:flex;flex-direction:column;gap:12px;position:relative;}
.step-num{
  width:40px;height:40px;border-radius:50%;
  background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;font-weight:700;font-size:17px;
  font-variant-numeric:tabular-nums;
}
.step-card h3{margin-top:2px;}
.step-card p{font-size:15px;line-height:1.8;color:var(--ink-600);}
.step-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.step-link:hover{text-decoration:underline;}
.step-card .btn{margin-top:auto;align-self:flex-start;}
.step-arrow{
  position:absolute;top:22px;right:-18px;color:#B9CBE8;font-size:18px;line-height:1;
}

/* ============ 案例证明 ============ */
.proof-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch;}
.proof-main{display:flex;flex-direction:column;padding:0;overflow:hidden;}
.proof-main img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--brand-50);}
.proof-main-body{padding:24px;display:flex;flex-direction:column;gap:12px;}
.proof-main-body h3{font-size:20px;}
.proof-main-body p{font-size:15px;}
.proof-side{display:flex;flex-direction:column;gap:24px;}
.data-card{display:flex;flex-direction:column;gap:6px;flex:1;justify-content:center;}
.data-card .data-num{font-size:34px;font-weight:700;color:var(--brand-600);line-height:1.1;font-variant-numeric:tabular-nums;}
.data-card .data-num small{font-size:16px;font-weight:600;margin-left:2px;}
.data-card p{font-size:14px;color:var(--ink-400);}
.stats-bar{
  margin-top:24px;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--brand-50);border:1px solid #DCE8FB;border-radius:var(--radius-card);
  overflow:hidden;
}
.stat-item{padding:20px 22px;border-right:1px solid #DCE8FB;}
.stat-item:last-child{border-right:0;}
.stat-item b{display:block;font-size:22px;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.3;}
.stat-item span{font-size:13px;color:var(--ink-400);}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(26,95,208,.28);}
.faq-item[open]{box-shadow:var(--shadow-card);border-color:rgba(26,95,208,.32);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 20px 14px 24px;
  font-size:16px;font-weight:600;color:var(--ink-900);
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand-600);opacity:0;transition:opacity .2s ease;
}
.faq-item[open] summary::before{opacity:1;}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;font-size:16px;line-height:1;font-weight:600;
  transition:transform .2s ease,background-color .2s ease,color .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--brand-600);color:#fff;}
.faq-body{padding:0 24px 20px 40px;font-size:15px;line-height:1.8;color:var(--ink-600);}

/* ============ 最新信息 ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:22px;}
.news-head .more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.chips{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;margin-bottom:26px;scrollbar-width:none;}
.chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;height:34px;padding:0 16px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink-600);
  font-size:14px;font-weight:500;
  transition:all .18s ease;
}
.chip:hover{border-color:var(--brand-600);color:var(--brand-600);}
.chip.active{background:var(--brand-50);border-color:rgba(26,95,208,.4);color:var(--brand-600);font-weight:600;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  color:inherit;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(26,95,208,.28);color:inherit;}
.news-thumb{aspect-ratio:16/9;background:var(--brand-50);overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-title{
  font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  font-size:14px;color:var(--ink-400);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--ink-400);
}
.news-meta .read{color:var(--brand-600);font-weight:600;}
.news-empty{
  grid-column:1/-1;
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  padding:56px 24px;background:#fff;border:1px dashed #CDDCF2;border-radius:var(--radius-card);
}
.news-empty .empty-icon{
  width:54px;height:54px;border-radius:16px;background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;font-size:22px;
}
.news-empty p{font-size:15px;color:var(--ink-400);}

/* ============ CTA 开通 ============ */
.cta-band{
  background:var(--brand-50);
  border:1px solid #DCE8FB;
  border-radius:var(--radius-lg);
  padding:48px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
}
.cta-band h2{margin-bottom:12px;}
.cta-band > div > p{font-size:16px;max-width:40ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:7px;}
.field input,.field textarea{
  width:100%;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:10px;background:#fff;
  font-size:15px;color:var(--ink-900);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:88px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-400);}
.field input:hover,.field textarea:hover{border-color:#C6D6EE;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(26,95,208,.14);}
.field.has-error input{border-color:var(--red-500);}
.field .tip{font-size:13px;color:var(--ink-400);margin-top:6px;}
.field.has-error .tip{color:var(--red-500);}
.field.is-ok input{border-color:var(--teal-500);box-shadow:0 0 0 3px rgba(14,159,138,.12);}
.form-note{font-size:13px;color:var(--ink-400);margin-top:12px;text-align:center;}
.form-success{
  display:none;margin-top:14px;padding:12px 14px;border-radius:10px;
  background:var(--teal-50);border:1px solid rgba(14,159,138,.35);color:#0B7D6C;font-size:14px;
}
.form-success.show{display:block;}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer);color:#B9C6D8;padding:64px 0 0;margin-top:80px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;padding-bottom:44px;}
.footer-brand .logo{color:#fff;margin-bottom:14px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand .logo em{color:#7FAEF5;}
.footer-brand p{font-size:14px;color:#8A9BB2;line-height:1.8;max-width:34ch;margin-bottom:16px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#B9C6D8;font-size:14px;display:inline-block;}
.footer-col a:hover{color:#fff;transform:translateX(2px);text-decoration:underline;}
.footer-col li span{font-size:14px;color:#8A9BB2;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:18px 0 22px;font-size:13px;color:#8A9BB2;
}
.footer-bottom a{color:#8A9BB2;}
.footer-bottom a:hover{color:#fff;}
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--brand-600);color:#fff;display:grid;place-items:center;
  box-shadow:var(--shadow-btn);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s ease,visibility .22s ease,transform .22s ease,background-color .2s ease;
  z-index:50;font-size:16px;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-700);color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:960px;}
  .hero-grid{gap:36px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-actions .status-chip{display:none;}
  .section{padding:64px 0;}
  .hero{padding:56px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{order:-1;}
  .hero-sub{max-width:none;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step-arrow{display:none;}
  .proof-grid{grid-template-columns:1fr;}
  .proof-side{flex-direction:row;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .stats-bar{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid #DCE8FB;}
  .cta-band{grid-template-columns:1fr;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .topbar{font-size:12px;}
  .topbar-right{display:none;}
  .section{padding:48px 0;}
  .section-tight{padding:44px 0;}
  .section-head{margin-bottom:28px;}
  .nav-wrap{height:64px;}
  .logo{font-size:16px;}
  .nav-actions .btn-accent{height:38px;padding:0 14px;font-size:14px;}
  .steps{grid-template-columns:1fr;}
  .proof-side{flex-direction:column;}
  .news-grid{grid-template-columns:1fr;}
  .stats-bar{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid #DCE8FB;}
  .stat-item:last-child{border-bottom:0;}
  .card{padding:20px;}
  .cta-band{padding:24px;border-radius:var(--radius-card);}
  .cta-actions .btn{width:100%;}
  .hero-cta .btn{width:100%;}
  .hero-points{gap:14px;flex-direction:column;}
  .float-card{position:static;width:100%;margin-top:14px;left:0;bottom:0;}
  .faq-item summary{font-size:15px;padding:14px 16px 14px 18px;}
  .faq-body{padding:0 18px 18px 34px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px;}
  .site-footer{margin-top:56px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:480px){
  h1{font-size:26px;}
  .logo-text{font-size:15px;}
}

/* roulang page: category1 */
:root{
  --brand-600:#1A5FD0;
  --brand-700:#1349A6;
  --brand-50:#EEF4FF;
  --accent-500:#FF7A1A;
  --accent-50:#FFF3E8;
  --teal-500:#0E9F8A;
  --teal-50:#E6F7F3;
  --amber-500:#E0A106;
  --amber-50:#FDF5E2;
  --red-500:#E2453C;
  --ink-900:#0F1B2D;
  --ink-600:#4A5B70;
  --ink-400:#8595A8;
  --line:#E3EAF3;
  --bg:#F6F9FD;
  --surface:#FFFFFF;
  --footer:#0E1B2E;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(16,24,40,.05),0 12px 28px -14px rgba(24,58,120,.18);
  --shadow-hover:0 2px 4px rgba(16,24,40,.06),0 18px 36px -16px rgba(24,58,120,.26);
  --shadow-btn:0 8px 18px -8px rgba(26,95,208,.45);
  --gap-block:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;}
a:hover{text-decoration:underline;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 18px;padding-left:22px;}
li{margin-bottom:8px;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 6px 20px -12px rgba(24,58,120,.28);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px;}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;}
.logo:hover{text-decoration:none;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;background:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;position:relative;flex:0 0 auto;
}
.logo-mark span{width:11px;height:11px;border-radius:3px;background:var(--accent-500);display:block;}
.logo-text{font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:.2px;line-height:1;}
.logo-text em{font-style:normal;color:var(--brand-600);}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;display:inline-block;padding:9px 13px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--ink-600);text-decoration:none;
  transition:background .18s ease,color .18s ease;
}
.nav-links a:hover{background:var(--brand-50);color:var(--brand-600);text-decoration:none;}
.nav-links a.active{color:var(--brand-600);font-weight:700;background:var(--brand-50);}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.status-chip{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;
  background:var(--teal-50);color:#0B7C6C;font-size:12px;font-weight:600;white-space:nowrap;
}
.status-chip i{width:7px;height:7px;border-radius:50%;background:var(--teal-500);display:block;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;
  align-items:center;justify-content:center;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;text-decoration:none;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{background:var(--brand-700);color:#fff;}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 8px 18px -8px rgba(255,122,26,.55);}
.btn-accent:hover{background:#E96A0C;color:#fff;}
.btn-outline{background:#fff;color:var(--brand-600);border-color:var(--line);}
.btn-outline:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-700);}
.btn-ghost{background:transparent;color:var(--brand-600);border-color:transparent;padding:0 12px;}
.btn-ghost:hover{background:var(--brand-50);}
.btn[disabled],.btn.disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-block{width:100%;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-teal{background:var(--teal-50);color:#0B7C6C;}
.badge-amber{background:var(--amber-50);color:#9A6E00;}
.badge-accent{background:var(--accent-50);color:#C55A08;}
.badge-brand{background:var(--brand-50);color:var(--brand-700);}

/* ---------- hero ---------- */
.page-hero{
  background:linear-gradient(160deg,#F6F9FD 0%,#EEF4FF 100%);
  border-bottom:1px solid var(--line);
  padding:64px 0 72px;
  position:relative;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;width:420px;height:420px;border-radius:50%;
  background:rgba(26,95,208,.07);top:-180px;right:-120px;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;width:200px;height:200px;border-radius:50%;
  background:rgba(255,122,26,.09);bottom:-110px;left:-70px;pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;position:relative;z-index:1;}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.page-hero h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:700;margin-bottom:18px;}
.page-hero .hero-lead{font-size:17px;line-height:1.8;color:var(--ink-600);max-width:36em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);background:var(--brand-50);
}
.hero-float{
  position:absolute;left:-14px;bottom:-22px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:14px 18px;box-shadow:var(--shadow-card);max-width:270px;
}
.hero-float strong{display:block;color:var(--ink-900);font-size:15px;margin-bottom:4px;}
.hero-float span{font-size:13px;color:var(--ink-400);line-height:1.6;display:block;}
.hero-float .badge{margin-top:8px;}

/* ---------- sections ---------- */
main{display:block;}
.section{padding:var(--gap-block) 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--ink-600);}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--brand-600);margin-bottom:12px;
}

/* ---------- content + toc layout ---------- */
.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:44px;align-items:start;}
.article-body h2{
  font-size:24px;line-height:1.4;margin:40px 0 14px;padding-left:12px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand-600);
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{font-size:19px;margin:28px 0 12px;font-weight:600;}
.article-body p{font-size:16px;line-height:1.8;color:var(--ink-600);}
.article-body strong{color:var(--ink-900);}
.quote{
  background:var(--brand-50);border-left:3px solid var(--brand-600);border-radius:0 12px 12px 0;
  padding:18px 22px;margin:24px 0;font-size:15px;color:var(--ink-600);line-height:1.8;
}
.step-list{counter-reset:sl;list-style:none;padding-left:0;margin:20px 0 26px;}
.step-list li{
  position:relative;padding-left:44px;margin-bottom:16px;font-size:16px;line-height:1.8;
}
.step-list li::before{
  counter-increment:sl;content:counter(sl);
  position:absolute;left:0;top:2px;width:28px;height:28px;border-radius:50%;
  background:var(--brand-50);color:var(--brand-600);font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.article-body ul.plain{padding-left:22px;}
.article-body ul.plain li{font-size:16px;line-height:1.8;}

/* ---------- sidebar toc ---------- */
.toc-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.toc-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);
}
.toc-card h3{font-size:15px;margin-bottom:14px;color:var(--ink-900);}
.toc-card ul{list-style:none;margin:0;padding:0;}
.toc-card li{margin-bottom:4px;}
.toc-card a{
  display:block;padding:9px 12px;border-radius:9px;font-size:14px;color:var(--ink-600);
  border-left:2px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.toc-card a:hover{background:var(--brand-50);color:var(--brand-600);text-decoration:none;border-left-color:var(--brand-600);}
.toc-status{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-card);}
.toc-status h3{font-size:15px;margin-bottom:12px;}
.toc-status p{font-size:13px;line-height:1.7;color:var(--ink-400);margin-bottom:12px;}
.toc-status .btn{width:100%;}

/* ---------- keypoint cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(26,95,208,.28);}
.card h3{font-size:18px;margin-bottom:10px;}
.card p{font-size:15px;line-height:1.75;color:var(--ink-600);margin:0;}
.card-cover{
  border-radius:12px;overflow:hidden;margin-bottom:18px;background:var(--brand-50);
}
.card-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.icon-badge{
  width:44px;height:44px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;margin-bottom:16px;
}
.icon-badge.accent{background:var(--accent-50);color:#C55A08;}
.icon-badge.teal{background:var(--teal-50);color:#0B7C6C;}

/* ---------- checklist ---------- */
.check-list{list-style:none;padding:0;margin:0;display:grid;gap:12px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.7;color:var(--ink-600);
  background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 16px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.check-list li:hover{border-color:rgba(26,95,208,.28);box-shadow:var(--shadow-card);}
.check-list li::before{
  content:"✓";flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:var(--teal-50);
  color:var(--teal-500);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.check-list li span b{color:var(--ink-900);}

/* ---------- stat strip ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:var(--brand-50);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;margin-top:24px;
}
.stat-strip div{padding:20px 22px;border-right:1px solid rgba(26,95,208,.14);}
.stat-strip div:last-child{border-right:0;}
.stat-strip strong{display:block;font-size:24px;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.2;}
.stat-strip span{font-size:13px;color:var(--ink-400);}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;margin-bottom:14px;
  box-shadow:var(--shadow-card);overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  min-height:56px;padding:14px 22px;font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";margin-left:auto;font-size:20px;color:var(--brand-600);font-weight:400;
  transition:transform .2s ease;line-height:1;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-index{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--brand-50);color:var(--brand-600);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.faq-body{padding:0 22px 20px 62px;font-size:15px;line-height:1.8;color:var(--ink-600);}
.faq-body p{margin:0;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-50);border:1px solid rgba(26,95,208,.18);border-radius:24px;
  padding:52px 44px;text-align:center;
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:14px;}
.cta-band p{max-width:640px;margin:0 auto 28px;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.cta-note{margin-top:20px;font-size:13px;color:var(--ink-400);}

/* ---------- footer ---------- */
.site-footer{background:var(--footer);color:#B9C6D8;padding:64px 0 0;margin-top:var(--gap-block);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;font-size:17px;}
.footer-brand .logo-text em{color:#6FA8FF;}
.footer-brand p{font-size:14px;line-height:1.8;color:#93A5BC;margin-bottom:16px;max-width:32em;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;font-size:14px;}
.footer-col a,.footer-col span{color:#B9C6D8;font-size:14px;transition:color .18s ease,padding-left .18s ease;}
.footer-col a:hover{color:#fff;padding-left:2px;text-decoration:none;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:20px 0;display:flex;flex-wrap:wrap;
  gap:12px 28px;justify-content:space-between;align-items:center;font-size:13px;color:#8A9BB2;
}
.footer-bottom a{color:#8A9BB2;}
.footer-bottom a:hover{color:#fff;text-decoration:none;}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;
  background:var(--brand-600);color:#fff;border:0;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 24px -10px rgba(26,95,208,.6);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s;z-index:70;font-size:18px;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-700);}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s;z-index:80;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:340px;background:#fff;z-index:90;
  transform:translateX(100%);transition:transform .28s ease;padding:20px;display:flex;flex-direction:column;
  box-shadow:-12px 0 30px -18px rgba(24,58,120,.4);
}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-900);font-size:18px;line-height:1;}
.drawer-nav{display:flex;flex-direction:column;padding:12px 0;flex:1;}
.drawer-nav a{
  font-size:16px;line-height:52px;color:var(--ink-600);border-bottom:1px solid var(--line);
  padding:0 6px;text-decoration:none;
}
.drawer-nav a.active{color:var(--brand-600);font-weight:700;}
.drawer-foot{padding-top:16px;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .content-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px;}
}
@media (max-width:1023px){
  :root{--gap-block:64px;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero{padding:48px 0 56px;}
  .content-layout{grid-template-columns:1fr;}
  .toc-side{position:static;order:-1;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-strip div:nth-child(2){border-right:0;}
  .stat-strip div:nth-child(1),.stat-strip div:nth-child(2){border-bottom:1px solid rgba(26,95,208,.14);}
}
@media (max-width:767px){
  :root{--gap-block:48px;}
  .container{padding:0 18px;}
  .status-chip{display:none;}
  .hero-float{position:static;margin-top:14px;max-width:100%;}
  .grid-3,.grid-2{grid-template-columns:1fr;}
  .section-head{margin-bottom:28px;}
  .cta-band{padding:36px 22px;border-radius:20px;}
  .cta-actions .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .faq-body{padding:0 20px 18px 20px;}
  .faq-item summary{padding:14px 18px;font-size:15px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .article-body h2{font-size:21px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-strip div{border-right:0;border-bottom:1px solid rgba(26,95,208,.14);}
  .stat-strip div:last-child{border-bottom:0;}
  .logo-text{font-size:16px;}
}

/* roulang page: article */
:root{
  --brand-600:#1A5FD0;
  --brand-700:#1349A6;
  --brand-50:#EEF4FF;
  --accent-500:#FF7A1A;
  --accent-50:#FFF3E8;
  --teal-500:#0E9F8A;
  --teal-50:#E7F7F4;
  --amber-500:#E0A106;
  --amber-50:#FDF6E3;
  --red-500:#E2453C;
  --ink-900:#0F1B2D;
  --ink-600:#4A5B70;
  --ink-400:#8595A8;
  --line:#E3EAF3;
  --bg:#F6F9FD;
  --surface:#FFFFFF;
  --footer:#0E1B2E;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(16,24,40,.05),0 12px 28px -14px rgba(24,58,120,.18);
  --sh-hover:0 2px 4px rgba(16,24,40,.06),0 18px 36px -16px rgba(24,58,120,.26);
  --sh-btn:0 8px 18px -8px rgba(26,95,208,.45);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--ink-900);margin:0;line-height:1.3;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
.nums{font-variant-numeric:tabular-nums;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -12px rgba(24,58,120,.28);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700;}
.logo:hover{color:var(--ink-900);}
.logo-mark{
  width:26px;height:26px;border-radius:8px;
  background:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px -8px rgba(26,95,208,.7);
  flex:0 0 auto;
}
.logo-mark span{width:9px;height:9px;border-radius:3px;background:var(--accent-500);display:block;}
.logo-text{font-size:17px;letter-spacing:.2px;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--brand-600);}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  display:inline-block;padding:9px 14px;border-radius:var(--r-pill);
  font-size:15px;color:var(--ink-600);font-weight:500;white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.nav-links a:hover{background:var(--brand-50);color:var(--brand-600);}
.nav-links a.active{background:var(--brand-50);color:var(--brand-600);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.status-chip{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--teal-50);color:var(--teal-500);
  font-size:12px;font-weight:600;white-space:nowrap;
}
.status-chip i{width:7px;height:7px;border-radius:50%;background:var(--teal-500);display:block;
  box-shadow:0 0 0 3px rgba(14,159,138,.16);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:42px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:transform .16s ease,background .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--sh-btn);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 8px 18px -10px rgba(255,122,26,.75);}
.btn-accent:hover{background:#EB6A0C;color:#fff;transform:translateY(-1px);}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-700);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;position:relative;cursor:pointer;padding:0;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--ink-900);border-radius:2px;
  transform:translateX(-50%);transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";left:0;top:-6px;transform:none;}
.nav-toggle span::after{content:"";left:0;top:6px;transform:none;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:rotate(45deg) translate(0,6px);}
body.nav-open .nav-toggle span::after{transform:rotate(-45deg) translate(0,-6px);}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(15,27,45,.42);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:70;
}
body.nav-open .nav-backdrop{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:6px;
  padding:14px 0;font-size:13px;color:var(--ink-400);
}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand-600);text-decoration:underline;}
.crumb .sep{color:#C3D0E0;}
.crumb .current{color:var(--brand-600);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章布局 ============ */
.article-wrap{padding:36px 0 72px;}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:36px;
  align-items:start;
}
.article-main{min-width:0;}
.article-head{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 30px;box-shadow:var(--sh-card);
}
.cat-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--brand-50);color:var(--brand-600);font-size:12px;font-weight:600;
}
.article-head h1{
  font-size:clamp(24px,3.2vw,34px);
  line-height:1.35;margin:14px 0 14px;font-weight:700;letter-spacing:.2px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--ink-400);
}
.article-meta .dot{color:#C3D0E0;}
.article-lead{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:15px;color:var(--ink-600);
}
.article-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px 34px;margin-top:24px;box-shadow:var(--sh-card);
  font-size:16px;line-height:1.8;color:var(--ink-600);
  max-width:100%;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:18px 0;max-width:42em;}
.article-body h2{
  position:relative;font-size:24px;line-height:1.4;margin:40px 0 14px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand-600);
}
.article-body h3{font-size:19px;margin:28px 0 10px;font-weight:600;}
.article-body h4{font-size:17px;margin:22px 0 8px;font-weight:600;}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-700);}
.article-body ul,.article-body ol{padding-left:22px;margin:16px 0;}
.article-body ul li{list-style:disc;margin:8px 0;}
.article-body ol li{list-style:decimal;margin:8px 0;}
.article-body li::marker{color:var(--brand-600);}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;background:var(--brand-50);
  border-left:3px solid var(--brand-600);border-radius:0 12px 12px 0;color:var(--ink-900);
}
.article-body blockquote p{margin:0;font-size:15.5px;}
.article-body img{border-radius:14px;margin:24px auto;max-width:100%;height:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--ink-400);margin-top:10px;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th{
  background:var(--brand-50);color:var(--ink-900);font-weight:600;text-align:left;
}
.article-body th,.article-body td{padding:12px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:#F8FBFF;}
.article-body code{
  background:var(--brand-50);color:var(--brand-700);border-radius:6px;
  padding:2px 6px;font-size:14px;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

.empty-state{
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-lg);
  padding:56px 28px;text-align:center;margin-top:24px;box-shadow:var(--sh-card);
}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:16px;background:var(--brand-50);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:24px;font-weight:700;
}
.empty-state h2{font-size:20px;margin-bottom:8px;}
.empty-state p{font-size:14.5px;color:var(--ink-400);margin-bottom:20px;}

/* ============ 文末操作 ============ */
.article-foot{
  margin-top:24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:22px 24px;box-shadow:var(--sh-card);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.article-foot .foot-text{font-size:14px;color:var(--ink-400);}
.article-foot .foot-btns{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 右侧栏 ============ */
.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:88px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-card);
}
.side-card h3{
  font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:3px;height:14px;border-radius:3px;background:var(--brand-600);display:block;
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow:auto;}
.toc-list a{
  display:block;font-size:13.5px;color:var(--ink-600);padding:7px 10px;border-radius:8px;
  border-left:2px solid transparent;line-height:1.5;
}
.toc-list a:hover{background:var(--brand-50);color:var(--brand-600);border-left-color:var(--brand-600);}
.toc-empty{font-size:13px;color:var(--ink-400);}
.mini-list{display:flex;flex-direction:column;gap:12px;}
.mini-card{
  display:flex;gap:12px;align-items:flex-start;padding:8px;border-radius:12px;
  border:1px solid transparent;transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.mini-card:hover{background:#F8FBFF;border-color:rgba(26,95,208,.28);transform:translateY(-2px);}
.mini-card img{
  width:96px;height:64px;flex:0 0 96px;object-fit:cover;border-radius:10px;background:var(--brand-50);
}
.mini-card .mini-body{min-width:0;}
.mini-card .mini-title{
  font-size:14px;color:var(--ink-900);font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-card:hover .mini-title{color:var(--brand-600);}
.mini-card .mini-time{font-size:12px;color:var(--ink-400);margin-top:6px;}
.side-links{display:flex;flex-direction:column;gap:8px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  font-size:14px;color:var(--ink-600);padding:10px 12px;border-radius:10px;background:#F8FBFF;
  border:1px solid var(--line);transition:all .18s ease;
}
.side-links a:hover{background:var(--brand-50);border-color:rgba(26,95,208,.28);color:var(--brand-600);}
.side-links a span{color:var(--ink-400);}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer);color:#B9C6D8;margin-top:72px;padding:56px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:36px;
}
.footer-brand .logo{color:#fff;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.75;color:#93A5BC;margin:14px 0 16px;max-width:320px;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
}
.badge-teal{background:rgba(14,159,138,.16);color:#4FD3C0;}
.badge-amber{background:rgba(224,161,6,.16);color:#F0C25A;}
.badge-accent{background:rgba(255,122,26,.16);color:#FFA45E;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:#B9C6D8;line-height:1.6;}
.footer-col a:hover{color:#fff;text-decoration:underline;transform:translateX(2px);display:inline-block;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:18px 0 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:#8A9BB2;
}
.footer-bottom a{color:#8A9BB2;}
.footer-bottom a:hover{color:#fff;}

/* 返回顶部 */
#backTop{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  background:var(--brand-600);color:#fff;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:var(--sh-btn);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease,background .18s ease;
  z-index:60;
}
#backTop.show{opacity:1;visibility:visible;transform:translateY(0);}
#backTop:hover{background:var(--brand-700);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:960px;}
}
@media (max-width:1024px){
  .article-grid{grid-template-columns:1fr;gap:24px;}
  .side-col{position:static;top:auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .nav-toggle{display:block;}
  .nav-actions .status-chip{display:none;}
  .nav-actions .btn-accent{display:none;}
  .nav-links{
    position:fixed;top:0;right:0;width:82vw;max-width:340px;height:100vh;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:84px 18px 28px;z-index:75;overflow-y:auto;
    transform:translateX(100%);transition:transform .24s ease;
    box-shadow:-16px 0 40px -24px rgba(15,27,45,.4);
  }
  body.nav-open .nav-links{transform:translateX(0);}
  .nav-links a{
    font-size:16px;line-height:52px;padding:0 12px;border-radius:12px;height:52px;
  }
  .nav-links a.active{background:var(--brand-50);}
  .article-wrap{padding:22px 0 52px;}
  .article-head{padding:22px 20px;border-radius:var(--r-card);}
  .article-body{padding:24px 20px;border-radius:var(--r-card);font-size:16px;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .article-body p{font-size:15.8px;}
  .crumb .current{max-width:200px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .article-foot .foot-btns{width:100%;}
  .article-foot .foot-btns .btn{flex:1 1 auto;}
  .site-footer{padding-top:40px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .logo-text{font-size:15px;}
  .logo-text em{display:inline;}
  .article-head h1{font-size:22px;}
  .mini-card img{width:80px;height:56px;flex:0 0 80px;}
  #backTop{right:16px;bottom:18px;}
}

/* roulang page: category2 */
:root{
  --brand-600:#1A5FD0;
  --brand-700:#1349A6;
  --brand-50:#EEF4FF;
  --accent-500:#FF7A1A;
  --accent-600:#E96A0C;
  --accent-50:#FFF3E8;
  --teal-500:#0E9F8A;
  --teal-50:#E7F7F4;
  --amber-500:#E0A106;
  --amber-50:#FDF4DE;
  --red-500:#E2453C;
  --ink-900:#0F1B2D;
  --ink-600:#4A5B70;
  --ink-400:#8595A8;
  --line:#E3EAF3;
  --bg:#F6F9FD;
  --surface:#FFFFFF;
  --footer:#0E1B2E;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(16,24,40,.05), 0 12px 28px -14px rgba(24,58,120,.18);
  --shadow-card-hover:0 2px 4px rgba(16,24,40,.06), 0 18px 36px -16px rgba(24,58,120,.26);
  --shadow-btn:0 8px 18px -8px rgba(26,95,208,.45);
  --font:"system-ui","-apple-system","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:.1px;}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;}
h3{font-size:19px;line-height:1.4;font-weight:600;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(24,58,120,.4);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700;}
.logo:hover{color:var(--ink-900);}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(140deg,var(--brand-600),var(--brand-700));
  position:relative;flex:0 0 auto;
  box-shadow:0 6px 14px -8px rgba(26,95,208,.7);
}
.logo-mark span{
  position:absolute;right:-4px;bottom:-4px;
  width:13px;height:13px;border-radius:4px;
  background:var(--accent-500);
  border:2px solid #fff;
}
.logo-text{font-size:17px;letter-spacing:.2px;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--brand-600);}
.nav-links{display:flex;align-items:center;gap:4px;margin:0 auto;}
.nav-links a{
  display:inline-flex;align-items:center;
  height:38px;padding:0 14px;border-radius:999px;
  font-size:15px;color:var(--ink-600);font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.nav-links a:hover{color:var(--brand-600);background:var(--brand-50);}
.nav-links a.active{color:var(--brand-600);background:var(--brand-50);font-weight:600;box-shadow:inset 0 -2px 0 var(--brand-600);}
.nav-links a.drawer-cta{display:none;}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.status-chip{
  display:inline-flex;align-items:center;gap:7px;
  height:28px;padding:0 12px;border-radius:999px;
  background:var(--teal-50);color:#0B7A6B;
  font-size:12.5px;font-weight:600;white-space:nowrap;
}
.status-chip i{width:7px;height:7px;border-radius:50%;background:var(--teal-500);box-shadow:0 0 0 3px rgba(14,159,138,.18);}
.nav-toggle{
  display:none;position:relative;z-index:70;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;cursor:pointer;
  transition:border-color .18s ease,background .18s ease;
}
.nav-toggle:hover{border-color:rgba(26,95,208,.4);background:var(--brand-50);}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;top:50%;
  width:18px;height:2px;border-radius:2px;background:var(--ink-900);
  transform:translate(-50%,-50%);transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span::before{content:"";left:0;top:-6px;transform:none;}
.nav-toggle span::after{content:"";left:0;top:6px;transform:none;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg);}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-lg{height:50px;padding:0 28px;font-size:16px;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 8px 18px -8px rgba(255,122,26,.55);}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}
.btn-outline{background:#fff;color:var(--brand-600);border-color:var(--line);}
.btn-outline:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-700);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
}
.badge-teal{background:var(--teal-50);color:#0B7A6B;}
.badge-amber{background:var(--amber-50);color:#96690A;}
.badge-accent{background:var(--accent-50);color:#B2540A;}
.badge-brand{background:var(--brand-50);color:var(--brand-700);}

/* ============ 标题条（版式 B：紧凑、无大图） ============ */
.page-head{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#F6F9FD 0%,#EEF4FF 100%);
  border-bottom:1px solid var(--line);
  padding:44px 0 52px;
}
.page-head::after{
  content:"";position:absolute;right:-120px;top:-140px;
  width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(255,122,26,.16),rgba(255,122,26,0) 68%);
  pointer-events:none;
}
.page-head::before{
  content:"";position:absolute;left:-100px;bottom:-160px;
  width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(26,95,208,.13),rgba(26,95,208,0) 70%);
  pointer-events:none;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:20px;}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand-600);}
.crumb span[aria-current]{color:var(--brand-600);font-weight:600;}
.page-head-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:36px;align-items:end;
}
.page-head h1{max-width:19em;}
.page-head .lede{margin-top:16px;font-size:16.5px;line-height:1.8;max-width:42em;color:var(--ink-600);}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.page-head-side{display:flex;flex-direction:column;align-items:flex-start;gap:10px;}
.meta-note{font-size:13px;color:var(--ink-400);}

/* ============ 步骤图文 ============ */
.steps-lead{max-width:44em;margin-bottom:8px;}
.steps-lead h2{margin-bottom:12px;}
.steps-lead p{color:var(--ink-600);}
.step-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;align-items:center;
  padding:44px 0;
  border-top:1px dashed var(--line);
}
.step-row:first-of-type{border-top:0;padding-top:24px;}
.step-row.reverse .step-media{order:2;}
.step-media{position:relative;}
.step-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--brand-50);
  box-shadow:var(--shadow-card);
}
.step-media .float-tag{
  position:absolute;left:18px;bottom:18px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:10px 14px;box-shadow:var(--shadow-card-hover);
  display:flex;align-items:center;gap:10px;
}
.step-media .float-tag b{font-size:14px;color:var(--ink-900);}
.step-media .float-tag small{display:block;font-size:12px;color:var(--ink-400);}
.step-body .step-index{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:46px;height:46px;padding:0 12px;border-radius:14px;
  background:var(--brand-50);color:var(--brand-600);
  font-size:19px;font-weight:700;font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step-body h2{font-size:clamp(21px,2.3vw,27px);margin-bottom:14px;}
.step-body p{color:var(--ink-600);}
.step-body p + p{margin-top:12px;}
.tick-list{margin-top:18px;display:grid;gap:10px;}
.tick-list li{
  position:relative;padding-left:28px;font-size:15px;line-height:1.7;color:var(--ink-600);
}
.tick-list li::before{
  content:"";position:absolute;left:0;top:6px;
  width:16px;height:16px;border-radius:50%;
  background:var(--brand-50);
  border:1px solid rgba(26,95,208,.3);
}
.tick-list li::after{
  content:"";position:absolute;left:5px;top:10px;
  width:6px;height:3px;border-left:1.6px solid var(--brand-600);border-bottom:1.6px solid var(--brand-600);
  transform:rotate(-45deg);
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:18px;font-size:14.5px;font-weight:600;color:var(--brand-600);
}
.link-more:hover{text-decoration:underline;}

/* ============ 进度条 ============ */
.progress-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:44em;margin-bottom:40px;}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--ink-600);}
.progress-track{
  position:relative;
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;padding-top:28px;
}
.progress-track::before{
  content:"";position:absolute;left:6%;right:6%;top:9px;height:2px;
  background:linear-gradient(90deg,var(--brand-600) 0%,var(--brand-600) 62%,var(--line) 62%,var(--line) 100%);
}
.progress-track li{position:relative;padding-top:22px;text-align:center;}
.progress-track li::before{
  content:"";position:absolute;left:50%;top:0;transform:translateX(-50%);
  width:18px;height:18px;border-radius:50%;
  background:#fff;border:3px solid var(--line);
}
.progress-track li.is-done::before{border-color:var(--brand-600);background:var(--brand-600);box-shadow:0 0 0 5px rgba(26,95,208,.12);}
.progress-track li.is-now::before{border-color:var(--accent-500);background:#fff;box-shadow:0 0 0 5px rgba(255,122,26,.16);}
.progress-track b{display:block;font-size:15px;color:var(--ink-900);}
.progress-track small{display:block;font-size:12.5px;color:var(--ink-400);margin-top:4px;font-variant-numeric:tabular-nums;}
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:48px;}
.check-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(26,95,208,.28);}
.check-card h3{display:flex;align-items:center;gap:10px;margin-bottom:12px;font-size:17.5px;}
.check-card h3 .dot{width:10px;height:10px;border-radius:3px;background:var(--accent-500);flex:0 0 auto;}
.check-card ul{display:grid;gap:9px;}
.check-card li{position:relative;padding-left:18px;font-size:15px;line-height:1.7;}
.check-card li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand-600);opacity:.55;}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);margin-bottom:14px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(26,95,208,.28);}
.faq-item[open]{border-color:rgba(26,95,208,.32);box-shadow:var(--shadow-card-hover);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:16px;
  min-height:56px;padding:16px 22px 16px 18px;
  font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";flex:0 0 auto;width:3px;height:20px;border-radius:2px;background:var(--brand-600);
}
.faq-icon{
  margin-left:auto;flex:0 0 auto;position:relative;
  width:22px;height:22px;border-radius:50%;
  background:var(--brand-50);
  transition:transform .2s ease,background .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;
}
.faq-icon::before{width:10px;height:2px;transform:translate(-50%,-50%);}
.faq-icon::after{width:2px;height:10px;transform:translate(-50%,-50%);}
.faq-item[open] .faq-icon{transform:rotate(135deg);background:var(--accent-50);}
.faq-item[open] .faq-icon::before,.faq-item[open] .faq-icon::after{background:var(--accent-500);}
.faq-a{padding:0 22px 20px 38px;font-size:15.5px;line-height:1.8;color:var(--ink-600);}
.faq-a p + p{margin-top:10px;}

/* ============ CTA ============ */
.cta-card{
  background:var(--brand-50);
  border:1px solid rgba(26,95,208,.18);
  border-radius:22px;
  padding:44px;
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);
  gap:40px;align-items:center;
}
.cta-copy h2{margin:14px 0 12px;}
.cta-copy p{color:var(--ink-600);max-width:34em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;}
.cta-panel{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:24px;box-shadow:var(--shadow-card);
}
.cta-panel h3{font-size:16px;margin-bottom:14px;}
.cta-panel ul{display:grid;gap:14px;}
.cta-panel li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;line-height:1.65;}
.cta-panel li b{display:block;color:var(--ink-900);font-size:15px;font-weight:600;}
.cta-panel .num{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  background:var(--accent-50);color:#B2540A;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer);color:#B9C6D8;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:44px;}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo-text em{color:#7FB0FF;}
.footer-brand p{font-size:14px;line-height:1.8;margin-bottom:16px;max-width:30em;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:#B9C6D8;}
.footer-col a{display:inline-block;transition:color .18s ease,transform .18s ease;}
.footer-col a:hover{color:#fff;transform:translateX(2px);text-decoration:underline;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:#8A9BB2;
}
.footer-bottom a{color:#8A9BB2;}
.footer-bottom a:hover{color:#fff;}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;right:20px;bottom:26px;z-index:80;
  width:44px;height:44px;border-radius:50%;
  border:0;background:var(--brand-600);color:#fff;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 26px -12px rgba(26,95,208,.8);
  cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease,background .18s ease;
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--brand-700);}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container{max-width:960px;}
  .section{padding:64px 0;}
  .page-head-inner{grid-template-columns:1fr;align-items:start;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .check-grid{grid-template-columns:1fr;}
}
@media (max-width:960px){
  .nav-links{
    position:fixed;top:0;right:0;z-index:60;
    width:82vw;max-width:360px;height:100vh;
    background:#fff;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:86px 20px 28px;
    margin:0;
    overflow-y:auto;
    transform:translateX(105%);
    transition:transform .28s ease;
    box-shadow:-18px 0 44px rgba(15,27,45,.18);
  }
  body.nav-open .nav-links{transform:translateX(0);}
  .nav-links a{
    height:52px;border-radius:12px;font-size:16px;
    padding:0 16px;justify-content:flex-start;
  }
  .nav-links a.active{box-shadow:none;}
  .nav-links a.drawer-cta{
    display:flex;justify-content:center;margin-top:16px;
    background:var(--accent-500);color:#fff;font-weight:600;
  }
  .nav-links a.drawer-cta:hover{background:var(--accent-600);color:#fff;}
  .status-chip{display:none;}
  .nav-actions .btn-accent{display:none;}
  .nav-toggle{display:block;}
  .logo-text{font-size:16px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  .page-head{padding:32px 0 40px;}
  .step-row{grid-template-columns:1fr;gap:24px;padding:32px 0;}
  .step-row.reverse .step-media{order:0;}
  .progress-track{grid-template-columns:1fr;gap:12px;padding-top:0;}
  .progress-track::before{display:none;}
  .progress-track li{text-align:left;padding:14px 0 14px 34px;}
  .progress-track li::before{left:0;top:20px;transform:none;}
  .cta-card{grid-template-columns:1fr;padding:26px;gap:26px;}
  .cta-actions .btn{width:100%;}
  .faq-a{padding-left:22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .back-top{right:14px;bottom:18px;}
}
@media (max-width:480px){
  h1{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;}
  .step-media .float-tag{left:12px;bottom:12px;padding:8px 12px;}
  .nav-actions{gap:8px;}
}

/* roulang page: category3 */
/* ===================== 设计变量 ===================== */
:root{
  --brand-600:#1A5FD0;
  --brand-700:#1349A6;
  --brand-50:#EEF4FF;
  --accent-500:#FF7A1A;
  --accent-600:#E86A0C;
  --accent-50:#FFF3E8;
  --teal-500:#0E9F8A;
  --teal-50:#E6F6F3;
  --amber-500:#E0A106;
  --amber-50:#FDF5E2;
  --red-500:#E2453C;
  --ink-900:#0F1B2D;
  --ink-600:#4A5B70;
  --ink-400:#8595A8;
  --line:#E3EAF3;
  --bg:#F6F9FD;
  --surface:#FFFFFF;
  --footer:#0E1B2E;
  --radius-card:16px;
  --radius-img:20px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-card:0 1px 2px rgba(16,24,40,.05), 0 12px 28px -14px rgba(24,58,120,.18);
  --shadow-card-hover:0 2px 4px rgba(16,24,40,.06), 0 18px 36px -16px rgba(24,58,120,.26);
  --shadow-btn:0 8px 18px -8px rgba(26,95,208,.45);
  --shadow-accent:0 8px 18px -8px rgba(255,122,26,.5);
  --container:1200px;
  --gap:24px;
}
/* ===================== 基础 reset ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;}
a:hover{color:var(--brand-700);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}
img{max-width:100%;display:block;}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,textarea{font-family:inherit;font-size:16px;}
table{border-collapse:collapse;width:100%;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ===================== 顶部公告条 ===================== */
.topbar{
  background:var(--brand-900,#0B2B63);
  background:linear-gradient(90deg,#1349A6,#1A5FD0);
  color:#EAF1FF;
  font-size:13px;
  line-height:1.5;
}
.topbar .container{display:flex;align-items:center;gap:14px;min-height:36px;}
.topbar .dot{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.14);padding:3px 10px;border-radius:var(--radius-pill);white-space:nowrap;}
.topbar .dot i{width:6px;height:6px;border-radius:50%;background:#3DE0C0;display:inline-block;}
.topbar .txt{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#D7E4FA;}
.topbar .clock{white-space:nowrap;color:#FFD9B8;font-variant-numeric:tabular-nums;}

/* ===================== 导航 ===================== */
.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 .22s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px -16px rgba(24,58,120,.35);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700;}
.logo:hover{color:var(--ink-900);}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(150deg,var(--brand-600),#3E86F0);
  display:inline-flex;align-items:center;justify-content:center;position:relative;flex:0 0 auto;
}
.logo-mark span{width:10px;height:10px;background:var(--accent-500);border-radius:3px;display:block;transform:rotate(45deg);}
.logo-text{font-size:18px;letter-spacing:.2px;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--brand-600);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-links a{
  display:inline-block;padding:8px 14px;border-radius:var(--radius-pill);
  color:var(--ink-600);font-size:15px;font-weight:500;white-space:nowrap;
}
.nav-links a:hover{color:var(--brand-600);background:var(--brand-50);}
.nav-links a.active{color:var(--brand-600);background:var(--brand-50);font-weight:600;position:relative;}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.status-chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--teal-500);
  background:var(--teal-50);border:1px solid rgba(14,159,138,.22);
  padding:4px 10px;border-radius:var(--radius-pill);white-space:nowrap;height:24px;
}
.status-chip i{width:6px;height:6px;border-radius:50%;background:var(--teal-500);display:inline-block;animation:pulse 1.8s infinite;}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(14,159,138,.5)}70%{box-shadow:0 0 0 6px rgba(14,159,138,0)}100%{box-shadow:0 0 0 0 rgba(14,159,138,0)}}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);align-items:center;justify-content:center;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);content:"";position:relative;transition:.2s;
}
.nav-toggle span::before{position:absolute;top:-6px;}
.nav-toggle span::after{position:absolute;top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}

/* 移动抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;background:#fff;z-index:90;
  transform:translateX(102%);transition:transform .26s ease;box-shadow:-18px 0 40px -22px rgba(15,27,45,.45);
  padding:20px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:8px;}
.drawer-head .logo-text{font-size:16px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);font-size:18px;color:var(--ink-600);line-height:1;}
.drawer a.drawer-link{
  display:flex;align-items:center;height:52px;font-size:16px;color:var(--ink-900);
  border-bottom:1px solid var(--line);padding:0 4px;
}
.drawer a.drawer-link.active{color:var(--brand-600);font-weight:600;}
.drawer .drawer-cta{margin-top:14px;}
.mask{position:fixed;inset:0;background:rgba(15,27,45,.42);z-index:80;opacity:0;visibility:hidden;transition:.24s;}
.mask.show{opacity:1;visibility:visible;}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background-color .18s,color .18s,border-color .18s,box-shadow .18s,transform .18s;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:var(--shadow-accent);}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-700);}
.btn-ghost:active{background:#E3EDFF;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ===================== 徽章 ===================== */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-teal{background:var(--teal-50);color:var(--teal-500);border:1px solid rgba(14,159,138,.2);}
.badge-amber{background:var(--amber-50);color:#A97804;border:1px solid rgba(224,161,6,.24);}
.badge-accent{background:var(--accent-50);color:var(--accent-600);border:1px solid rgba(255,122,26,.24);}
.badge-brand{background:var(--brand-50);color:var(--brand-600);border:1px solid rgba(26,95,208,.2);}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ===================== 通用板块 ===================== */
.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:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.section-head p{font-size:16px;color:var(--ink-600);max-width:44em;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-600);
  background:var(--brand-50);border-radius:var(--radius-pill);padding:5px 12px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent-500);}

/* ===================== 面包屑 ===================== */
.crumb{font-size:13px;color:var(--ink-400);padding-top:20px;}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{margin:0 6px;color:#B9C6D8;}
.crumb .cur{color:var(--brand-600);font-weight:600;}

/* ===================== 页面首屏（版式C：紧凑标题条） ===================== */
.page-hero{
  background:
    radial-gradient(420px 260px at 88% 10%, rgba(26,95,208,.10), transparent 70%),
    linear-gradient(160deg,#F6F9FD 0%,#EEF4FF 100%);
  border-bottom:1px solid var(--line);
  padding:44px 0 56px;
}
.page-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;margin-top:24px;}
.page-hero h1{font-size:clamp(28px,4.2vw,42px);line-height:1.25;margin:16px 0 16px;}
.page-hero p.lead{font-size:17px;line-height:1.85;color:var(--ink-600);max-width:40em;}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;padding-top:22px;border-top:1px dashed var(--line);}
.hero-points div{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-600);}
.hero-points i{
  width:22px;height:22px;border-radius:7px;background:var(--brand-50);color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-style:normal;font-weight:700;
}
.page-hero-media{position:relative;}
.page-hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-img);
  box-shadow:var(--shadow-card-hover);border:1px solid var(--line);
}
.page-hero-media .float-card{
  position:absolute;left:-18px;bottom:-22px;background:#fff;border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--shadow-card-hover);padding:14px 16px;max-width:250px;
}
.page-hero-media .float-card strong{display:block;color:var(--ink-900);font-size:15px;margin-bottom:4px;}
.page-hero-media .float-card span{font-size:13px;color:var(--ink-400);}

/* ===================== 特性卡网格 2×3 ===================== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.feature-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-card);display:flex;flex-direction:column;gap:10px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(26,95,208,.28);}
.feature-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;
}
.feature-card h3{font-size:18px;font-weight:600;}
.feature-card p{font-size:15px;color:var(--ink-600);}
.feature-card .tag{margin-top:auto;font-size:13px;color:var(--brand-600);font-weight:600;}
.feature-card .tag:hover{text-decoration:underline;}

/* ===================== 表格 ===================== */
.table-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.table-caption{
  padding:20px 24px;border-bottom:1px solid var(--line);background:linear-gradient(160deg,#FFFFFF,#F6F9FD);
}
.table-caption h3{font-size:18px;margin-bottom:6px;}
.table-caption p{font-size:14px;color:var(--ink-400);}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table.spec{min-width:640px;font-size:15px;}
table.spec th,table.spec td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);}
table.spec thead th{background:var(--brand-50);color:var(--brand-700);font-weight:600;font-size:14px;white-space:nowrap;}
table.spec tbody tr:nth-child(even){background:#F8FBFF;}
table.spec tbody tr:hover{background:#F1F7FF;}
table.spec td:first-child{color:var(--ink-900);font-weight:600;}
table.spec tbody tr:last-child td{border-bottom:0;}
.pill{display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:var(--radius-pill);font-size:12px;font-weight:600;}
.pill-ok{background:var(--teal-50);color:var(--teal-500);}
.pill-mid{background:var(--amber-50);color:#A97804;}
.pill-brand{background:var(--brand-50);color:var(--brand-600);}

/* ===================== 保障流程条 ===================== */
.flow-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;
}
.flow-item{padding:24px;position:relative;border-right:1px dashed var(--line);}
.flow-item:last-child{border-right:0;}
.flow-item .step-no{
  font-size:13px;font-weight:700;color:var(--brand-600);background:var(--brand-50);
  display:inline-flex;align-items:center;justify-content:center;height:24px;padding:0 10px;border-radius:var(--radius-pill);margin-bottom:12px;
}
.flow-item h4{font-size:16px;margin-bottom:6px;}
.flow-item p{font-size:14px;color:var(--ink-600);}
.safety-note{
  margin-top:24px;display:flex;gap:14px;align-items:flex-start;
  background:var(--accent-50);border:1px solid rgba(255,122,26,.22);border-radius:14px;padding:18px 20px;
}
.safety-note .ico{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;background:#fff;color:var(--accent-600);
  display:flex;align-items:center;justify-content:center;font-weight:700;
}
.safety-note strong{display:block;color:var(--ink-900);margin-bottom:4px;font-size:15px;}
.safety-note p{font-size:14px;color:var(--ink-600);}

/* ===================== FAQ ===================== */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-card);overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:rgba(26,95,208,.28);}
.faq-item.open{border-color:rgba(26,95,208,.34);box-shadow:var(--shadow-card-hover);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;min-height:56px;padding:14px 20px;
  text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.5;
}
.faq-q .idx{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--brand-50);color:var(--brand-600);
  font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
}
.faq-q .plus{
  margin-left:auto;flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:var(--brand-50);
  position:relative;transition:transform .2s ease,background-color .2s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-q .plus::before{width:12px;height:2px;}
.faq-q .plus::after{width:2px;height:12px;transition:transform .2s ease,opacity .2s ease;}
.faq-item.open .plus{background:var(--brand-600);}
.faq-item.open .plus::before{background:#fff;}
.faq-item.open .plus::after{background:#fff;transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .22s ease;
}
.faq-item.open .faq-a{max-height:420px;}
.faq-a-inner{padding:0 20px 20px 60px;font-size:15.5px;line-height:1.8;color:var(--ink-600);}
.faq-a-inner a{font-weight:600;}

/* ===================== CTA ===================== */
.cta-section{padding:0 0 88px;}
.cta-card{
  background:#EEF4FF;border:1px solid rgba(26,95,208,.18);border-radius:22px;
  padding:48px;display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;
}
.cta-card h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.cta-card p{font-size:16px;color:var(--ink-600);max-width:34em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;}
.cta-panel{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow-card);
}
.cta-panel h3{font-size:17px;margin-bottom:6px;}
.cta-panel .sub{font-size:14px;color:var(--ink-400);margin-bottom:18px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:6px;}
.field input,.field textarea{
  width:100%;height:44px;border:1px solid var(--line);border-radius:10px;padding:0 12px;
  background:#fff;color:var(--ink-900);transition:border-color .18s,box-shadow .18s;
}
.field textarea{height:88px;padding:10px 12px;resize:vertical;line-height:1.6;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-400);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(26,95,208,.16);
}
.field .hint{font-size:13px;color:var(--ink-400);margin-top:6px;}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--footer);color:#B9C6D8;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px;}
.site-footer .logo-text{color:#fff;}
.site-footer .logo-text em{color:#7FB0FF;}
.site-footer .logo:hover{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;color:#B9C6D8;margin:14px 0 16px;max-width:30em;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a,.footer-col span{color:#B9C6D8;font-size:14px;}
.footer-col a{display:inline-block;transition:color .18s,transform .18s;}
.footer-col a:hover{color:#fff;transform:translateX(2px);text-decoration:underline;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:18px 0;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;font-size:13px;color:#8A9BB2;
}
.footer-bottom a{color:#8A9BB2;}
.footer-bottom a:hover{color:#fff;}

/* ===================== 返回顶部 ===================== */
.back-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--brand-600);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-btn);z-index:70;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s,visibility .22s,transform .22s,background-color .18s;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--brand-700);color:#fff;}

/* ===================== 响应式 ===================== */
@media (max-width:1279px){
  :root{--container:960px;}
  .nav-links a{padding:8px 10px;font-size:14px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .status-chip{display:none;}
  .page-hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-points{gap:16px;}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .flow-bar{grid-template-columns:repeat(2,1fr);}
  .flow-item:nth-child(2){border-right:0;}
  .flow-item{border-bottom:1px dashed var(--line);}
  .flow-item:nth-last-child(-n+2){border-bottom:0;}
  .cta-card{grid-template-columns:1fr;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  .topbar .txt{display:none;}
  .page-hero{padding:28px 0 44px;}
  .page-hero-media .float-card{position:static;margin-top:16px;max-width:none;}
  .hero-points div{font-size:13px;}
  .btn{height:46px;}
  .btn-row .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .feature-grid{grid-template-columns:1fr;}
  .flow-bar{grid-template-columns:1fr;}
  .flow-item{border-right:0;border-bottom:1px dashed var(--line);}
  .flow-item:last-child{border-bottom:0;}
  .faq-a-inner{padding-left:20px;}
  .cta-section{padding:0 0 48px;}
  .cta-card{padding:24px;border-radius:18px;}
  .cta-panel{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:32px;}
  .back-top{right:16px;bottom:16px;}
}
@media (max-width:480px){
  .logo-text{font-size:16px;}
  .page-hero h1{font-size:26px;}
  .section-head h2{font-size:22px;}
  .faq-q{font-size:15px;padding:12px 16px;gap:10px;}
}