/* roulang page: index */
:root{
  --primary:#3B5BFF;
  --primary-600:#2A46DD;
  --primary-soft:#EAEEFF;
  --dark:#0A1030;
  --dark-2:#111A45;
  --neon:#2BE0D0;
  --magenta:#FF4D9D;
  --orange:#FF9F1C;
  --orange-600:#E8890B;
  --bg:#F4F6FB;
  --bg-soft:#EEF2FB;
  --card:#FFFFFF;
  --text:#101828;
  --text-2:#4A5568;
  --text-3:#8A94A6;
  --border:#E4E9F2;
  --success:#17B26A;
  --warning:#F79009;
  --error:#F04438;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(16,24,40,.04),0 12px 32px -16px rgba(16,24,40,.14);
  --shadow-hover:0 18px 40px -18px rgba(16,24,40,.22);
  --shadow-neon:0 0 0 1px rgba(43,224,208,.35),0 0 18px rgba(43,224,208,.32);
  --section-gap:88px;
  --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","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  letter-spacing:-.01em;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary);}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.25;font-weight:700;letter-spacing:-.01em;}
button{cursor:pointer;border:none;background:none;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--section-gap) 0;}
.section--soft{background:var(--bg-soft);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:var(--primary);background:var(--primary-soft);
  border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.section-head h2{font-size:30px;margin-bottom:12px;}
.section-head h2::after{
  content:"";display:block;width:48px;height:3px;border-radius:2px;
  background:var(--primary);margin-top:14px;
}
.section-head p{color:var(--text-2);font-size:16px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--dark);
}
.site-header::after{
  content:"";display:block;height:2px;
  background:linear-gradient(90deg,var(--neon),var(--magenta) 45%,rgba(255,77,157,0) 100%);
}
.nav-wrap{
  height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:19px;font-weight:700;white-space:nowrap;}
.brand:hover{color:#fff;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex:0 0 32px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--neon));
  color:#06122B;font-size:15px;font-weight:800;
  box-shadow:0 0 0 1px rgba(43,224,208,.4);
}
.brand-text small{display:block;font-size:11px;font-weight:500;color:#8FA0C8;letter-spacing:.16em;}
.main-nav{display:flex;align-items:center;gap:2px;flex:1;justify-content:center;}
.main-nav a{
  position:relative;display:block;padding:10px 13px;border-radius:8px;
  font-size:15px;color:#C9D2E8;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:1px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.main-nav a:hover{color:#fff;}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{
  color:var(--neon);
  background:rgba(43,224,208,.08);
  box-shadow:inset 0 0 0 1px rgba(43,224,208,.18);
}
.main-nav a.is-active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(43,224,208,.6);}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:var(--radius-btn);
  background:var(--orange);color:#231400;font-size:14px;font-weight:700;white-space:nowrap;
  transition:background .18s ease,transform .18s ease;
}
.nav-cta:hover{background:#FFB444;color:#231400;transform:translateY(-1px);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:22px;height:2px;border-radius:2px;background:var(--neon);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 倒计时条 ============ */
.countdown-bar{
  background:var(--dark-2);
  border-bottom:1px solid rgba(255,255,255,.06);
  color:#C9D2E8;
}
.countdown-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:12px 0;flex-wrap:wrap;
}
.countdown-label{display:flex;align-items:center;gap:10px;font-size:14px;}
.countdown-label .dot{
  width:8px;height:8px;border-radius:50%;background:var(--neon);
  box-shadow:0 0 10px rgba(43,224,208,.8);flex:0 0 8px;
}
.countdown-label strong{color:#fff;font-weight:600;}
.countdown-units{display:flex;align-items:center;gap:10px;}
.unit{display:flex;align-items:baseline;gap:6px;}
.unit .num{
  font-family:ui-monospace,Menlo,Consolas,monospace;
  font-variant-numeric:tabular-nums;
  font-size:22px;font-weight:700;color:#fff;
  min-width:44px;text-align:center;
  padding:2px 6px;border-radius:8px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.08);
}
.unit--sec .num{color:var(--neon);box-shadow:var(--shadow-neon);border-color:transparent;}
.unit .lab{font-size:12px;color:#8FA0C8;}

/* ============ Hero ============ */
.hero{background:#fff;padding:72px 0 88px;border-bottom:1px solid var(--border);}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);
  background:var(--primary-soft);border-radius:999px;padding:6px 15px;margin-bottom:20px;
}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);}
.hero h1{font-size:44px;line-height:1.22;margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--orange);color:#231400;box-shadow:0 10px 24px -12px rgba(255,159,28,.9);}
.btn-primary:hover{background:#FFB444;color:#231400;box-shadow:0 14px 30px -12px rgba(255,159,28,.95);}
.btn-outline{background:transparent;color:var(--primary);border:1.5px solid var(--primary);}
.btn-outline:hover{background:var(--primary);color:#fff;}
.btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--border);}
.btn-ghost:hover{border-color:var(--primary);}
.btn[disabled]{opacity:.4;pointer-events:none;}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px;padding-top:24px;border-top:1px solid var(--border);}
.hero-stats .stat b{
  display:block;font-family:ui-monospace,Menlo,monospace;font-variant-numeric:tabular-nums;
  font-size:24px;font-weight:700;color:var(--text);letter-spacing:-.02em;
}
.hero-stats .stat span{font-size:13px;color:var(--text-3);}
.hero-visual{position:relative;}
.hero-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--border);box-shadow:var(--shadow-card);
  aspect-ratio:4/3;background:linear-gradient(135deg,#E7ECFB,#DCE6FF);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-badge{
  position:absolute;right:-10px;bottom:22px;
  display:inline-flex;align-items:center;gap:8px;
  background:#06122B;color:var(--neon);
  font-size:13px;font-weight:600;
  padding:10px 18px;border-radius:999px;
  box-shadow:var(--shadow-neon);
}
.hero-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px var(--neon);}

/* ============ 卖点 2+2 错位网格 ============ */
.feature-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;}
.feature-grid .row2{display:grid;grid-template-columns:1fr 1.35fr;gap:24px;grid-column:1 / -1;}
.feature-card{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);padding:28px;
  box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D3DBEC;}
.feature-card .no{
  font-family:ui-monospace,Menlo,monospace;font-variant-numeric:tabular-nums;
  font-size:40px;font-weight:700;line-height:1;color:var(--neon);
  letter-spacing:-.03em;margin-bottom:16px;
}
.feature-card h3{font-size:20px;margin-bottom:12px;}
.feature-card p{color:var(--text-2);font-size:15px;margin-bottom:20px;flex:1;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);}
.text-link::after{content:"→";transition:transform .2s ease;}
.text-link:hover::after{transform:translateX(4px);}

/* ============ 图墙 ============ */
.wall{columns:3;column-gap:24px;}
.wall-item{
  break-inside:avoid;margin-bottom:24px;position:relative;
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--border);background:var(--card);
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease;
}
.wall-item:hover{transform:scale(1.03);box-shadow:var(--shadow-hover);}
.wall-item img{width:100%;height:auto;object-fit:cover;display:block;}
.wall-item.tall img{aspect-ratio:3/4;}
.wall-item.wide img{aspect-ratio:16/10;}
.wall-item.mid img{aspect-ratio:4/3;}
.wall-cap{
  position:absolute;left:12px;top:12px;
  font-size:12px;font-weight:600;color:#EAF2FF;
  background:rgba(10,16,48,.55);
  border:1px solid rgba(255,255,255,.18);
  border-radius:999px;padding:5px 12px;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.wall-text{padding:16px 18px 18px;}
.wall-text b{display:block;font-size:15px;font-weight:600;margin-bottom:4px;}
.wall-text span{font-size:13px;color:var(--text-3);}

/* ============ 数据带 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
}
.metric{padding:28px 24px;border-right:1px solid var(--border);}
.metric:last-child{border-right:none;}
.metric b{
  display:block;font-family:ui-monospace,Menlo,monospace;font-variant-numeric:tabular-nums;
  font-size:32px;font-weight:700;color:var(--primary);letter-spacing:-.02em;line-height:1.2;
}
.metric span{display:block;font-size:14px;color:var(--text-2);margin-top:6px;}
.metric em{display:block;font-style:normal;font-size:13px;color:var(--text-3);margin-top:8px;}

/* ============ CTA 窄带 ============ */
.cta-band{
  background:var(--dark);
  border-top:1px solid rgba(43,224,208,.35);
  border-bottom:1px solid rgba(43,224,208,.35);
  box-shadow:inset 0 0 40px rgba(43,224,208,.06);
  padding:56px 0;
}
.cta-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:center;}
.cta-copy h2{color:#fff;font-size:28px;margin-bottom:12px;}
.cta-copy p{color:#A8B4D4;font-size:15px;max-width:420px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-field{display:flex;flex-direction:column;gap:6px;}
.form-field.full{grid-column:1 / -1;}
.form-field label{font-size:13px;color:#A8B4D4;}
.form-field input,.form-field textarea{
  height:46px;padding:0 14px;border-radius:var(--radius-btn);
  background:#fff;border:1px solid #2A3560;color:var(--text);
  transition:box-shadow .18s ease,border-color .18s ease;
  width:100%;
}
.form-field textarea{height:92px;padding:12px 14px;resize:vertical;}
.form-field input::placeholder,.form-field textarea::placeholder{color:#A6AFC4;}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--neon);
  box-shadow:0 0 0 3px rgba(43,224,208,.22);
}
.form-field.has-error input,.form-field.has-error textarea{border-color:var(--error);}
.form-msg{display:none;font-size:12.5px;color:var(--error);}
.form-field.has-error .form-msg{display:block;}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-actions .btn{min-width:150px;}
.form-note{font-size:12.5px;color:#7F8DB2;}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:0 24px;border-left:3px solid #CBD3E4;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  box-shadow:var(--shadow-card);
}
.faq-item[open]{border-left-color:var(--neon);transform:translateX(3px);}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:20px 0;font-size:16px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";flex:0 0 12px;width:12px;height:12px;
  border-right:2px solid var(--text-3);border-bottom:2px solid var(--text-3);
  transform:rotate(45deg) translateY(-3px);
  transition:transform .2s ease,border-color .2s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg) translateY(-3px);border-color:var(--neon);}
.faq-item .faq-body{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* ============ 最新信息卡片 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D3DBEC;}
.post-media{aspect-ratio:16/9;background:linear-gradient(135deg,#E7ECFB,#DCE6FF);overflow:hidden;}
.post-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .post-media img{transform:scale(1.05);}
.post-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  font-size:12px;font-weight:600;color:var(--primary);
  background:var(--primary-soft);border-radius:999px;padding:4px 12px;margin-bottom:12px;
}
.badge--teal{color:#0E7F76;background:#E1F8F5;}
.badge--amber{color:#9A5B00;background:#FFF3E0;}
.badge--pink{color:#A81D5E;background:#FDE9F2;}
.badge--slate{color:#3F4C6B;background:#EDF0F7;}
.post-card h3{
  font-size:17px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .excerpt{
  font-size:14.5px;color:var(--text-2);line-height:1.75;margin-bottom:16px;flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--border);
  font-size:13px;color:var(--text-3);
}
.post-meta .arrow{color:var(--primary);font-weight:600;transition:transform .2s ease;}
.post-card:hover .post-meta .arrow{transform:translateX(4px);}
.empty-state{
  grid-column:1 / -1;text-align:center;
  background:var(--card);border:1px dashed var(--border);border-radius:var(--radius-card);
  padding:56px 24px;
}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:18px;}

/* ============ 页脚 ============ */
.footer-divider{
  height:2px;
  background:linear-gradient(90deg,transparent,var(--neon),var(--magenta),transparent);
  opacity:.6;
}
.site-footer{background:var(--dark);color:#A8B4D4;padding:60px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.8;max-width:300px;}
.footer-col h4{font-size:14px;color:var(--neon);margin-bottom:16px;letter-spacing:.02em;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#A8B4D4;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;margin-bottom:10px;}
.footer-bottom{
  margin-top:48px;padding:22px 0;
  border-top:1px solid rgba(255,255,255,.08);
  text-align:center;font-size:13px;color:#7F8DB2;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .main-nav a{padding:10px 10px;font-size:14px;}
}
@media (max-width:991px){
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;
    background:var(--dark);
    border-top:1px solid rgba(255,255,255,.08);
    padding:8px 0 16px;
    max-height:0;overflow:hidden;opacity:0;pointer-events:none;
    transition:max-height .28s ease,opacity .2s ease;
  }
  .main-nav.is-open{max-height:520px;opacity:1;pointer-events:auto;}
  .main-nav a{height:52px;display:flex;align-items:center;padding:0 24px;border-radius:0;border-bottom:1px solid rgba(255,255,255,.08);}
  .main-nav a::after{display:none;}
  .site-header{position:sticky;}
  .header-inner{position:relative;}
  .hero{padding:56px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:34px;}
  .hero h1 br{display:none;}
  .feature-grid{grid-template-columns:1fr;}
  .feature-grid .row2{grid-template-columns:1fr;}
  .wall{columns:2;}
  .metrics{grid-template-columns:1fr 1fr;}
  .metric{border-bottom:1px solid var(--border);}
  .metric:nth-child(2n){border-right:none;}
  .metric:nth-last-child(-n+2){border-bottom:none;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:24px;}
}
@media (max-width:767px){
  :root{--section-gap:56px;}
  body{font-size:16px;}
  .container{padding:0 20px;}
  .hero h1{font-size:30px;}
  .hero-stats{gap:20px;}
  .wall{columns:1;}
  .post-grid{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-right:none;border-bottom:1px solid var(--border);}
  .metric:last-child{border-bottom:none;}
  .metric:nth-last-child(-n+2){border-bottom:1px solid var(--border);}
  .metric:last-child{border-bottom:none;}
  .countdown-inner{flex-direction:column;align-items:flex-start;gap:12px;}
  .countdown-units{width:100%;gap:8px;}
  .unit{flex:1;}
  .unit .num{min-width:0;width:100%;font-size:20px;}
  .unit .lab{display:none;}
}
@media (max-width:559px){
  .hero h1{font-size:28px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .btn{width:100%;}
  .form-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-copy h2{font-size:23px;}
  .section-head h2{font-size:22px;}
  .hero-visual .hero-badge{right:10px;font-size:12px;}
}

/* roulang page: article */
:root{
  --indigo:#3B5BFF;
  --indigo-soft:#EEF1FF;
  --dark:#0A1030;
  --cyan:#2BE0D0;
  --magenta:#FF4D9D;
  --orange:#FF9F1C;
  --bg:#F4F6FB;
  --bg-soft:#EEF2FB;
  --card:#FFFFFF;
  --text:#101828;
  --text-2:#4A5568;
  --text-3:#8A94A6;
  --border:#E4E9F2;
  --ok:#17B26A;
  --warn:#F79009;
  --err:#F04438;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh:0 1px 2px rgba(16,24,40,.04), 0 12px 32px -16px rgba(16,24,40,.14);
  --sh-h:0 18px 40px -18px rgba(16,24,40,.22);
  --glow:0 0 0 1px rgba(43,224,208,.35), 0 0 18px rgba(43,224,208,.32);
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  letter-spacing:-0.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--indigo);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--indigo);opacity:.85;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{line-height:1.25;font-weight:700;margin:0;letter-spacing:-0.01em;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;}
.section-sm{padding:56px 0;}
.section-head{margin-bottom:40px;}
.section-head h2{font-size:30px;margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:16px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--indigo);background:var(--indigo-soft);border-radius:999px;padding:6px 14px;}
.rule{width:48px;height:4px;border-radius:999px;background:var(--indigo);margin:18px 0 0;}
.rule-cyan{background:var(--cyan);}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--dark);
  color:#C9D2E8;
}
.site-header::after{
  content:"";display:block;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta),rgba(43,224,208,0));
}
.header-inner{display:flex;align-items:center;justify-content:space-between;}
.nav-wrap{display:flex;align-items:center;gap:28px;min-height:68px;width:100%;}
.brand{display:flex;align-items:center;gap:12px;color:#fff;flex-shrink:0;}
.brand:hover{color:#fff;opacity:1;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--indigo),#2540c9);
  color:#fff;font-weight:700;font-size:14px;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(43,224,208,.35);
}
.brand-text{display:flex;flex-direction:column;font-size:17px;font-weight:700;line-height:1.2;color:#fff;}
.brand-text small{font-size:12px;font-weight:400;color:#7C89AD;letter-spacing:.04em;margin-top:2px;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.main-nav a{
  position:relative;
  color:#C9D2E8;font-size:15px;font-weight:500;
  padding:10px 14px;border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.05);}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{
  color:var(--cyan);background:rgba(43,224,208,.10);box-shadow:inset 0 0 0 1px rgba(43,224,208,.28);
}
.main-nav a.is-active::after{transform:scaleX(1);box-shadow:var(--glow);}
.nav-cta{
  flex-shrink:0;
  background:var(--orange);color:#0A1030;font-weight:700;font-size:15px;
  padding:11px 22px;border-radius:var(--r-btn);
  box-shadow:0 10px 24px -14px rgba(255,159,28,.9);
  transition:transform .18s ease,filter .18s ease;
}
.nav-cta:hover{color:#0A1030;filter:brightness(1.06);opacity:1;}
.nav-cta:active{transform:translateY(1px);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(43,224,208,.35);
  background:rgba(255,255,255,.04);padding:0;place-items:center;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--cyan);border-radius:2px;margin:3px auto;}

/* ============ breadcrumb ============ */
.crumb-bar{background:var(--bg-soft);border-bottom:1px solid var(--border);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:14px;color:var(--text-3);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--indigo);}
.crumb .sep{color:#C3CBDB;}
.crumb .current{color:var(--text);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ article head ============ */
.article-head{padding:56px 0 40px;background:var(--card);border-bottom:1px solid var(--border);}
.article-head-inner{max-width:860px;margin:0 auto;}
.article-head h1{font-size:44px;margin-bottom:20px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--text-3);}
.article-meta .dot{color:#C3CBDB;}
.badge{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;color:var(--indigo);
  background:var(--indigo-soft);border-radius:999px;padding:4px 12px;
}
.badge-cyan{color:#0C6F68;background:rgba(43,224,208,.16);}
.badge-orange{color:#8A5101;background:rgba(255,159,28,.18);}
.article-lead{
  max-width:860px;margin:26px auto 0;padding:18px 22px;
  background:var(--bg-soft);border-left:4px solid var(--indigo);border-radius:12px;
  color:var(--text-2);font-size:16px;line-height:1.85;
}
.hero-thumb{max-width:860px;margin:28px auto 0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--border);aspect-ratio:16/9;background:#E9EDF6;}
.hero-thumb img{width:100%;height:100%;object-fit:cover;}

/* ============ article body ============ */
.article-main{padding:64px 0 var(--sec);}
.article-wrap{max-width:840px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh);padding:48px;}
.article-body{font-size:17px;line-height:1.9;color:var(--text-2);}
.article-body > * + *{margin-top:1.2em;}
.article-body h2{
  position:relative;font-size:30px;color:var(--text);
  padding-left:16px;margin-top:2em;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:999px;background:var(--cyan);
}
.article-body h3{font-size:20px;color:var(--text);margin-top:1.6em;font-weight:700;}
.article-body p{margin-top:1.2em;}
.article-body strong{color:var(--text);}
.article-body a{color:var(--indigo);border-bottom:1px solid rgba(59,91,255,.32);}
.article-body ul,.article-body ol{margin-top:1.2em;padding-left:22px;line-height:1.95;}
.article-body ul li{list-style:none;position:relative;padding-left:6px;}
.article-body ul li::before{content:"";position:absolute;left:-14px;top:.72em;width:6px;height:6px;border-radius:999px;background:var(--cyan);}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-bottom:8px;}
.article-body blockquote{
  margin:1.6em 0;padding:20px 24px;border-left:4px solid var(--indigo);
  background:var(--bg-soft);border-radius:12px;color:var(--text-2);
}
.article-body img{width:100%;height:auto;border-radius:var(--r-img);margin-top:1.4em;border:1px solid var(--border);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body pre{
  background:#0A1030;color:#D7DEEE;border-radius:12px;padding:18px 20px;overflow-x:auto;
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px;line-height:1.7;
}
.article-body code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.94em;background:var(--bg-soft);border-radius:6px;padding:2px 6px;}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body .table-scroll{width:100%;overflow-x:auto;margin-top:1.4em;border:1px solid var(--border);border-radius:12px;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px;}
.article-body thead th{background:var(--bg-soft);color:var(--text);font-weight:700;text-align:left;}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--border);}
.article-body tbody tr:nth-child(even){background:#FAFBFE;}
.article-body tbody tr:last-child td{border-bottom:none;}
.article-body hr{border:none;border-top:1px solid var(--border);margin:2em 0;}

.article-foot{max-width:840px;margin:32px auto 0;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-row .label{font-size:14px;color:var(--text-3);}
.tag{
  display:inline-flex;align-items:center;font-size:13px;color:var(--text-2);
  background:var(--card);border:1px solid var(--border);border-radius:999px;padding:6px 14px;
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.tag:hover{color:var(--indigo);border-color:rgba(59,91,255,.4);transform:translateY(-2px);}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;}
.pager a{
  display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh);transition:box-shadow .22s ease,transform .22s ease;
}
.pager a:hover{box-shadow:var(--sh-h);transform:translateY(-3px);}
.pager span{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px;}
.pager strong{display:block;font-size:16px;color:var(--text);line-height:1.5;}
.pager .next{text-align:right;}
.back-row{margin-top:28px;}
.empty-state{
  max-width:840px;margin:0 auto;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-card);box-shadow:var(--sh);padding:64px 32px;text-align:center;
}
.empty-state h2{font-size:24px;margin-bottom:12px;}
.empty-state p{color:var(--text-2);margin-bottom:24px;}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .18s ease,filter .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--orange);color:#0A1030;box-shadow:0 12px 26px -16px rgba(255,159,28,.95);}
.btn-primary:hover{color:#0A1030;filter:brightness(1.06);opacity:1;}
.btn-outline{background:transparent;color:var(--indigo);border-color:var(--indigo);}
.btn-outline:hover{background:var(--indigo);color:#fff;opacity:1;}
.btn-dark{background:var(--dark);color:#fff;}
.btn-dark:hover{background:#131a44;color:#fff;opacity:1;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn:disabled{opacity:.4;cursor:not-allowed;}

/* ============ related cards ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh);overflow:hidden;
  transition:box-shadow .22s ease,transform .22s ease;
}
.card:hover{box-shadow:var(--sh-h);transform:translateY(-3px);}
.card-thumb{aspect-ratio:16/9;background:#E9EDF6;overflow:hidden;}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-thumb img{transform:scale(1.03);}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;gap:12px;}
.card-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-body p{
  font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:auto;font-size:13px;color:var(--text-3);padding-top:12px;border-top:1px solid var(--border);
}
.card-meta .arrow{color:var(--indigo);transition:transform .2s ease;}
.card:hover .card-meta .arrow{transform:translateX(4px);}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;margin-top:8px;}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-left:3px solid #C9D2E8;
  border-radius:12px;box-shadow:var(--sh);overflow:hidden;
  transition:border-color .24s ease,transform .24s ease;
}
.faq-item[open]{border-left-color:var(--cyan);transform:translateX(4px);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;
  font-size:16px;font-weight:600;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";color:var(--cyan);font-size:20px;font-weight:700;line-height:1;flex-shrink:0;
}
.faq-item[open] summary::after{content:"–";}
.faq-item .faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* ============ CTA band ============ */
.cta-band{
  background:var(--dark);color:#E7ECF7;position:relative;padding:56px 0;
}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(43,224,208,.7),rgba(255,77,157,.45),rgba(43,224,208,0));
}
.cta-band::before{top:0;}
.cta-band::after{bottom:0;}
.cta-inner{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.cta-inner h2{color:#fff;font-size:28px;margin-bottom:12px;}
.cta-inner p{color:#9AA6C4;font-size:15px;}
.cta-form{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;color:#9AA6C4;}
.field input,.field textarea{
  height:46px;border-radius:var(--r-btn);border:1px solid #2A3358;background:#fff;color:var(--text);
  padding:0 14px;font-size:15px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:88px;padding:12px 14px;resize:vertical;line-height:1.6;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(43,224,208,.25);
}
.field .hint{font-size:12px;color:var(--err);}
.cta-form .btn{grid-column:1 / -1;}

/* ============ footer ============ */
.site-footer{background:var(--dark);color:#9AA6C4;padding:64px 0 0;position:relative;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,rgba(43,224,208,.8),rgba(255,77,157,.4),rgba(43,224,208,0));
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:44px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.8;color:#9AA6C4;max-width:320px;}
.footer-col h4{font-size:14px;color:var(--cyan);margin-bottom:16px;font-weight:600;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:#C9D2E8;font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;color:#9AA6C4;margin-bottom:8px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  text-align:center;padding:22px 0;font-size:13px;color:#7C89AD;
}

/* ============ responsive ============ */
@media (max-width:1199px){
  :root{--sec:76px;}
  .container{max-width:1100px;}
  .article-head h1{font-size:38px;}
}
@media (max-width:991px){
  .nav-toggle{display:grid;margin-left:auto;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    background:var(--dark);border-top:1px solid rgba(255,255,255,.08);
    max-height:0;overflow:hidden;transition:max-height .3s ease;
  }
  .main-nav.is-open{max-height:460px;overflow:auto;}
  .main-nav a{padding:0 24px;height:52px;display:flex;align-items:center;border-bottom:1px solid rgba(255,255,255,.08);border-radius:0;}
  .main-nav a::after{display:none;}
  .nav-wrap{position:relative;gap:14px;}
  .nav-cta{display:none;}
  .cta-inner{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .article-wrap{padding:36px 28px;}
  .article-head h1{font-size:32px;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section-head h2{font-size:24px;}
  .article-head{padding:40px 0 32px;}
  .article-head h1{font-size:28px;}
  .article-main{padding:40px 0 56px;}
  .article-wrap{padding:26px 20px;border-radius:14px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .article-body table{min-width:460px;}
  .crumb .current{max-width:200px;}
  .pager{grid-template-columns:1fr;}
  .pager .next{text-align:left;}
  .card-grid{grid-template-columns:1fr;}
  .cta-form{grid-template-columns:1fr;}
  .brand-text{font-size:15px;}
}
@media (max-width:559px){
  .article-head h1{font-size:26px;}
  .btn{width:100%;}
  .hero-thumb{aspect-ratio:4/3;}
  .footer-col p{font-size:13px;}
  .article-meta{gap:8px;}
}

/* roulang page: category1 */
:root{
  --brand:#3B5BFF;
  --brand-dark:#2A45D6;
  --ink:#0A1030;
  --cyan:#2BE0D0;
  --magenta:#FF4D9D;
  --orange:#FF9F1C;
  --orange-dark:#F08C00;
  --bg:#F4F6FB;
  --bg-soft:#EEF2FB;
  --card:#FFFFFF;
  --text:#101828;
  --text-2:#4A5568;
  --text-3:#8A94A6;
  --line:#E4E9F2;
  --ok:#17B26A;
  --warn:#F79009;
  --err:#F04438;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh:0 1px 2px rgba(16,24,40,.04), 0 12px 32px -16px rgba(16,24,40,.14);
  --sh-hover:0 18px 40px -18px rgba(16,24,40,.22);
  --glow:0 0 0 1px rgba(43,224,208,.35), 0 0 18px rgba(43,224,208,.32);
  --sec:88px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  letter-spacing:-.01em;
}
img{max-width:100%;display:block;}
a{color:var(--text);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
button,input{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  background:var(--ink);
  position:sticky;
  top:0;
  z-index:60;
}
.site-header::after{
  content:"";
  display:block;
  height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta) 55%,rgba(255,77,157,0));
}
.header-inner{padding-top:0;padding-bottom:0;}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--cyan),var(--brand));
  color:#06132B;font-weight:800;font-size:15px;letter-spacing:.02em;
}
.brand-text{
  display:flex;flex-direction:column;line-height:1.2;
  color:#fff;font-size:16px;font-weight:700;
}
.brand-text small{color:#8FA0C6;font-size:11px;font-weight:500;letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  color:#C9D2E8;
  font-size:15px;
  border-radius:8px;
}
.main-nav a::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:4px;height:1px;
  background:var(--cyan);
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.main-nav a:hover{color:#fff;}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{
  color:var(--cyan);
  background:rgba(43,224,208,.08);
  box-shadow:inset 0 -2px 0 0 var(--cyan),0 0 18px rgba(43,224,208,.18);
}
.main-nav a.is-active::after{transform:scaleX(1);}
.nav-cta{
  margin-left:12px;
  display:inline-flex;align-items:center;justify-content:center;
  height:42px;padding:0 20px;border-radius:var(--r-btn);
  background:var(--orange);color:#2A1600;font-weight:700;font-size:15px;
  white-space:nowrap;
  transition:background .2s ease,transform .15s ease,box-shadow .2s ease;
}
.nav-cta:hover{background:#FFB444;color:#2A1600;box-shadow:0 10px 24px -12px rgba(255,159,28,.9);}
.nav-cta:active{transform:translateY(1px);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid rgba(255,255,255,.12);
  border-radius:10px;
  background:rgba(255,255,255,.04);
  cursor:pointer;
  padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--cyan);border-radius:2px;}

/* ============ 通用板块 ============ */
main{display:block;}
.section{padding:var(--sec) 0;}
.section-soft{background:var(--bg-soft);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:30px;margin-bottom:14px;}
.section-head h2::after{
  content:"";display:block;width:44px;height:3px;border-radius:2px;
  background:var(--brand);margin-top:14px;
}
.section-head p{color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.12em;
  color:var(--brand);text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cyan);}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
  background:rgba(59,91,255,.10);color:var(--brand);
}
.badge.is-cyan{background:rgba(43,224,208,.16);color:#0E8C82;}
.badge.is-orange{background:rgba(255,159,28,.16);color:#B36A00;}
.badge.is-magenta{background:rgba(255,77,157,.12);color:#B5306B;}
.badge.is-green{background:rgba(23,178,106,.13);color:#0E7C4B;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .15s ease,box-shadow .2s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--orange);color:#2A1600;}
.btn-primary:hover{background:#FFB444;color:#2A1600;box-shadow:0 12px 26px -14px rgba(255,159,28,.95);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:rgba(59,91,255,.08);color:var(--brand);}
.btn-solid{background:var(--brand);color:#fff;}
.btn-solid:not(h1):hover{background:var(--brand-dark);color:#fff;}

/* ============ Hero 窄版 ============ */
.page-hero{
  position:relative;
  min-height:280px;
  display:flex;align-items:flex-end;
  background-image:
    linear-gradient(180deg,rgba(244,246,251,.62),rgba(244,246,251,.94)),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero-inner{padding:56px 0 44px;width:100%;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--text-3);margin-bottom:18px;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand);}
.crumb span.sep{color:#C3CBDA;}
.crumb .current{color:var(--text-2);}
.page-hero h1{font-size:40px;max-width:900px;margin-bottom:16px;}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.hero-lead{max-width:720px;color:var(--text-2);font-size:17px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}

/* ============ 卡片网格（3 列） ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  display:flex;flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#D6DDEC;}
.media{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  background:
    repeating-linear-gradient(45deg,#E7EBF5 0 12px,#EEF2FB 12px 24px);
  overflow:hidden;
}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .media img{transform:scale(1.03);}
.media .flag{
  position:absolute;left:12px;top:12px;
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;
  background:rgba(10,16,48,.55);
  color:#EAF2FF;
  border:1px solid rgba(43,224,208,.35);
}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:20px;}
.card-body p{color:var(--text-2);font-size:15px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.card-meta .arrow{transition:transform .2s ease;color:var(--brand);font-weight:700;}
.card:hover .card-meta .arrow{transform:translateX(4px);}

/* ============ KPI 数据区 ============ */
.kpi-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;
}
.kpi{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh);
}
.kpi .num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:38px;font-weight:700;color:var(--brand);line-height:1.1;
}
.kpi .num small{font-size:16px;color:var(--text-3);font-weight:600;margin-left:4px;}
.kpi .label{margin-top:8px;font-size:15px;font-weight:600;}
.kpi .note{margin-top:6px;font-size:13px;color:var(--text-3);}
.bar{
  margin-top:16px;height:6px;border-radius:999px;background:#E7EBF5;overflow:hidden;
}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--cyan));}

/* ============ 更新条目速览（细边框表格式） ============ */
.ledger{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);overflow:hidden;
}
.ledger-head,.ledger-row{
  display:grid;grid-template-columns:160px 1.1fr 1fr 110px;
  gap:16px;align-items:center;padding:16px 24px;
}
.ledger-head{
  background:var(--ink);color:#C9D2E8;font-size:13px;font-weight:600;letter-spacing:.04em;
}
.ledger-row{border-top:1px solid var(--line);font-size:15px;transition:background .2s ease;}
.ledger-row:hover{background:#FAFBFF;}
.ledger-row .t{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--text-2);font-size:14px;}
.ledger-row .s{display:flex;justify-content:flex-end;}
.ledger-row strong{font-weight:600;}

/* ============ 核对要点（左文右图） ============ */
.check-wrap{
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
}
.check-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:0;}
.check-list .idx{
  flex:0 0 34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-weight:700;font-size:15px;color:#0E8C82;background:rgba(43,224,208,.16);
}
.check-list h3{font-size:17px;margin-bottom:4px;}
.check-list p{font-size:15px;color:var(--text-2);}
.check-visual{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh);aspect-ratio:4/3;background:#E7EBF5;
}
.check-visual img{width:100%;height:100%;object-fit:cover;}

/* ============ FAQ ============ */
.faq-list{max-width:900px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  border-left:3px solid #D5DCEA;
  margin-top:12px;padding:0 22px;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.faq-item[open]{
  border-left-color:var(--cyan);
  transform:translateX(3px);
  box-shadow:var(--sh);
}
.faq-item summary{
  cursor:pointer;list-style:none;
  padding:18px 0;font-size:16px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;color:var(--brand);font-size:20px;font-weight:700;line-height:1;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"–";color:#0E8C82;}
.faq-item .answer{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* ============ CTA 窄带 ============ */
.cta-band{
  background:var(--ink);
  border-top:1px solid rgba(43,224,208,.45);
  border-bottom:1px solid rgba(43,224,208,.45);
  box-shadow:0 0 18px rgba(43,224,208,.18);
  color:#fff;
}
.cta-inner{
  display:grid;grid-template-columns:1fr 1.05fr;gap:40px;align-items:center;
  padding:52px 0;
}
.cta-inner h2{font-size:28px;color:#fff;margin-bottom:12px;}
.cta-inner p{color:#A9B6D6;font-size:15px;}
.cta-form{display:grid;grid-template-columns:1fr auto;gap:12px;}
.cta-form label{
  grid-column:1/-1;font-size:13px;color:#8FA0C6;letter-spacing:.04em;
}
.cta-form input{
  height:46px;border-radius:var(--r-btn);border:1px solid #D8DFEE;
  background:#fff;color:var(--text);padding:0 14px;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form input:focus{
  outline:none;border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(43,224,208,.25);
}
.cta-form input:invalid:not(:placeholder-shown){
  border-color:var(--err);box-shadow:0 0 0 3px rgba(240,68,56,.16);
}
.cta-form .hint{grid-column:1/-1;font-size:12px;color:#7C8AAE;}
.cta-form .btn{height:46px;}

/* ============ 底部文字链 ============ */
.foot-link-row{
  padding:44px 0 0;
  display:flex;flex-wrap:wrap;gap:16px 32px;align-items:center;
  font-size:15px;color:var(--text-2);
}
.foot-link-row a{color:var(--brand);font-weight:600;}
.foot-link-row .dot{color:#C3CBDA;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--sec);
  background:var(--ink);
  color:#B9C4DE;
  border-top:2px solid rgba(43,224,208,.5);
  padding:64px 0 0;
  font-size:14px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{color:#94A2C4;line-height:1.9;}
.footer-col h4{
  color:var(--cyan);font-size:14px;font-weight:600;letter-spacing:.04em;margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:#B9C4DE;}
.footer-col a:hover{color:#fff;}
.footer-col p{margin-bottom:10px;color:#94A2C4;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0;text-align:center;color:#8394B8;font-size:13px;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .kpi-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991px){
  :root{--sec:64px;}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--ink);
    border-top:1px solid rgba(255,255,255,.08);
    padding:8px 16px 16px;
    opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .22s ease,transform .22s ease;
    box-shadow:0 24px 40px -20px rgba(0,0,0,.6);
  }
  .main-nav.is-open{opacity:1;transform:none;pointer-events:auto;}
  .main-nav a{
    height:52px;display:flex;align-items:center;border-radius:8px;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .main-nav a::after{display:none;}
  .main-nav a.is-active{box-shadow:inset 3px 0 0 0 var(--cyan);}
  .nav-wrap{position:relative;}
  .check-wrap{grid-template-columns:1fr;gap:32px;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .ledger-head{display:none;}
  .ledger-row{grid-template-columns:1fr 1fr;row-gap:6px;}
  .ledger-row .s{justify-content:flex-start;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  .container{padding:0 20px;}
  .card-grid{grid-template-columns:1fr;}
  .kpi-grid{grid-template-columns:1fr;}
  .page-hero h1{font-size:28px;}
  .section-head h2{font-size:24px;}
  .cta-inner h2{font-size:24px;}
  .cta-form{grid-template-columns:1fr;}
  .cta-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .ledger-row{grid-template-columns:1fr;padding:16px 18px;}
}
@media (max-width:559px){
  body{font-size:16px;}
  .brand-text{font-size:15px;}
  .page-hero h1{font-size:26px;}
  .hero-lead{font-size:15px;}
  .btn{width:100%;}
  .foot-link-row{flex-direction:column;align-items:flex-start;gap:10px;}
}

/* roulang page: category2 */
:root{
  --primary:#3B5BFF;
  --primary-dark:#2B45D8;
  --dark:#0A1030;
  --dark-2:#141C42;
  --cyan:#2BE0D0;
  --magenta:#FF4D9D;
  --orange:#FF9F1C;
  --orange-dark:#F08A00;
  --bg:#F4F6FB;
  --bg-soft:#EEF2FB;
  --card:#FFFFFF;
  --text:#101828;
  --text-2:#4A5568;
  --text-3:#8A94A6;
  --border:#E4E9F2;
  --ok:#17B26A;
  --warn:#F79009;
  --err:#F04438;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 12px 32px -16px rgba(16,24,40,.14);
  --shadow-hover:0 18px 40px -18px rgba(16,24,40,.22);
  --glow:0 0 0 1px rgba(43,224,208,.35), 0 0 18px rgba(43,224,208,.32);
  --section-gap:88px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  letter-spacing:.005em;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--text);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--primary);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:700;color:var(--text);}
h1{font-size:44px;}
h2{font-size:30px;}
h3{font-size:20px;font-weight:600;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  background:var(--dark);
  position:sticky;
  top:0;
  z-index:60;
  border-bottom:2px solid transparent;
  background-image:linear-gradient(var(--dark),var(--dark)),linear-gradient(90deg,var(--cyan),var(--magenta) 55%,transparent);
  background-origin:border-box;
  background-clip:padding-box,border-box;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:68px;}
.nav-wrap{display:flex;align-items:center;gap:28px;width:100%;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--cyan),var(--primary));
  color:#05122A;font-weight:800;font-size:14px;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;color:#fff;font-weight:700;font-size:16px;}
.brand-text small{display:block;font-size:11px;font-weight:400;color:#8FA0C8;margin-top:3px;letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{
  position:relative;padding:10px 14px;font-size:15px;color:#C9D2E8;border-radius:8px;
  transition:color .18s ease,background .18s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.main-nav a:hover{color:#fff;}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--cyan);background:rgba(43,224,208,.08);box-shadow:inset 0 0 0 1px rgba(43,224,208,.25);}
.main-nav a.is-active::after{transform:scaleX(1);box-shadow:var(--glow);}
.nav-cta{
  flex-shrink:0;background:var(--orange);color:#1B1102;font-weight:700;font-size:15px;
  padding:11px 20px;border-radius:var(--r-btn);transition:background .18s ease,transform .12s ease;
}
.nav-cta:hover{background:#FFB347;color:#1B1102;}
.nav-cta:active{transform:translateY(1px);}
.nav-toggle{
  display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  border-radius:10px;
}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--cyan);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 窄版 Hero ============ */
.page-hero{
  position:relative;
  background-color:var(--bg-soft);
  background-image:linear-gradient(90deg,rgba(244,246,251,.34),rgba(244,246,251,.12)),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--border);
}
.page-hero-inner{
  position:relative;
  padding:56px 0 52px;
  min-height:260px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-2);margin-bottom:18px;}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--primary);}
.crumbs span.sep{color:var(--text-3);}
.crumbs .current{color:var(--text);font-weight:600;}
.page-hero h1{font-size:40px;max-width:820px;}
.page-hero h1 em{font-style:normal;color:var(--primary);}
.hero-rule{width:56px;height:4px;border-radius:2px;background:var(--primary);margin:18px 0 16px;}
.page-hero .lead{max-width:720px;font-size:17px;color:var(--text-2);margin:0;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:#fff;border:1px solid var(--border);color:var(--text-2);
}
.chip i{width:6px;height:6px;border-radius:50%;background:var(--cyan);display:block;}

/* ============ 通用板块 ============ */
.section{padding:var(--section-gap) 0;}
.section.soft{background:var(--bg-soft);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);background:rgba(59,91,255,.08);padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.section-head h2{font-size:30px;}
.section-head h2::after{content:"";display:block;width:44px;height:4px;border-radius:2px;background:var(--cyan);margin-top:14px;}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;}

/* ============ 分栏布局 ============ */
.split-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:40px;align-items:start;}
.side-panel{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow);
}
.side-panel h3{font-size:16px;margin-bottom:6px;}
.side-panel .side-note{font-size:13px;color:var(--text-3);margin-bottom:16px;}
.side-list li + li{margin-top:4px;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:10px 12px;border-radius:10px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;transition:all .18s ease;
}
.side-list a:hover{background:var(--bg-soft);color:var(--primary);border-color:var(--border);}
.side-list a.is-current{background:rgba(59,91,255,.08);color:var(--primary);font-weight:600;border-color:rgba(59,91,255,.18);}
.side-list a .num{
  font-family:ui-monospace,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;
  font-size:13px;color:var(--cyan);font-weight:700;
}
.side-divider{height:1px;background:var(--border);margin:20px 0;}
.side-meta{font-size:13px;color:var(--text-3);line-height:1.9;}
.side-meta strong{color:var(--text);font-weight:600;display:block;font-size:14px;margin-bottom:6px;}
.side-badge{
  display:inline-block;margin-top:14px;padding:6px 12px;border-radius:999px;font-size:12px;
  background:rgba(43,224,208,.12);color:#0E8C81;font-weight:600;
}

/* ============ 单列宽条目列表 ============ */
.wide-list{display:flex;flex-direction:column;gap:22px;}
.wide-item{
  display:grid;grid-template-columns:300px minmax(0,1fr);gap:24px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.wide-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CBD6EC;}
.wide-thumb{
  position:relative;aspect-ratio:4/3;border-radius:var(--r-img);overflow:hidden;
  background:#E7ECF7;
  background-image:linear-gradient(135deg,#E7ECF7 25%,#EEF2FB 25%,#EEF2FB 50%,#E7ECF7 50%,#E7ECF7 75%,#EEF2FB 75%);
  background-size:16px 16px;
}
.wide-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.wide-body{display:flex;flex-direction:column;gap:10px;min-width:0;}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(59,91,255,.09);color:var(--primary);
}
.badge.badge-cyan{background:rgba(43,224,208,.14);color:#0E8C81;}
.badge.badge-orange{background:rgba(255,159,28,.14);color:#B96E00;}
.badge.badge-magenta{background:rgba(255,77,157,.12);color:#C22A72;}
.wide-body h3{font-size:20px;}
.wide-body h3 a{color:var(--text);}
.wide-body h3 a:hover{color:var(--primary);}
.wide-body p{color:var(--text-2);font-size:15px;line-height:1.8;margin:0;}
.wide-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-top:auto;padding-top:6px;
}
.wide-meta .dot{color:var(--border);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);
}
.link-arrow span{transition:transform .18s ease;display:inline-block;}
.link-arrow:hover span{transform:translateX(4px);}

/* ============ 速查表 ============ */
.table-wrap{
  overflow-x:auto;border:1px solid var(--border);border-radius:var(--r-card);
  background:var(--card);box-shadow:var(--shadow);
}
table{width:100%;border-collapse:collapse;min-width:680px;}
thead th{
  background:var(--dark);color:#DCE4F7;font-size:14px;font-weight:600;text-align:left;
  padding:14px 18px;white-space:nowrap;
}
tbody td{padding:14px 18px;font-size:15px;color:var(--text-2);border-top:1px solid var(--border);}
tbody tr:nth-child(even){background:#FAFBFE;}
tbody td:first-child{color:var(--text);font-weight:600;}
td .tag{
  display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(23,178,106,.12);color:#0E7D4C;
}
td .tag.tag-warn{background:rgba(247,144,9,.14);color:#B96E00;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
details.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:0 22px;box-shadow:var(--shadow);
  border-left:3px solid #D4DCEA;transition:border-color .2s ease,transform .2s ease;
}
details.faq-item[open]{border-left-color:var(--cyan);transform:translateX(2px);}
details.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 0;font-size:16px;font-weight:600;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
details.faq-item summary::-webkit-details-marker{display:none;}
details.faq-item summary::after{
  content:"+";font-family:ui-monospace,Menlo,monospace;font-size:20px;color:var(--primary);flex-shrink:0;
  transition:transform .2s ease;
}
details.faq-item[open] summary::after{content:"–";color:var(--cyan);}
.faq-body{padding:0 0 18px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* ============ CTA 窄带 ============ */
.cta-band{
  background:var(--dark);
  border-top:1px solid rgba(43,224,208,.35);
  border-bottom:1px solid rgba(43,224,208,.35);
  box-shadow:0 0 18px rgba(43,224,208,.18);
  padding:56px 0;
}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:44px;align-items:center;}
.cta-copy h2{color:#fff;font-size:28px;}
.cta-copy h2::after{content:"";display:block;width:44px;height:4px;border-radius:2px;background:var(--orange);margin-top:14px;}
.cta-copy p{color:#A9B6D8;font-size:16px;margin-top:16px;}
.cta-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;color:#B8C4E2;}
.field input{
  height:46px;padding:0 14px;border-radius:var(--r-btn);
  background:#fff;border:1px solid #C9D3E8;color:var(--text);font-size:15px;
  transition:box-shadow .18s ease,border-color .18s ease;
}
.field input::placeholder{color:#9AA6BF;}
.field input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(43,224,208,.28);}
.field .err-msg{font-size:12px;color:#FF8A80;min-height:16px;}
.field.has-error input{border-color:var(--err);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:700;
  transition:background .18s ease,color .18s ease,transform .12s ease,box-shadow .18s ease;
}
.btn:active{transform:translateY(1px);}
.btn:disabled{opacity:.4;pointer-events:none;}
.btn-primary{background:var(--orange);color:#1B1102;}
.btn-primary:hover{background:#FFB347;color:#1B1102;}
.btn-ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.32);}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:#fff;}
.cta-form .btn{grid-column:1 / -1;}
.form-hint{grid-column:1 / -1;font-size:13px;color:#8FA0C8;}

/* ============ 底部文字链 ============ */
.back-link-row{padding:40px 0 0;text-align:center;font-size:15px;color:var(--text-3);}
.back-link-row a{font-weight:600;color:var(--primary);}
.back-link-row a:hover{color:var(--primary-dark);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);color:#8FA0C8;margin-top:var(--section-gap);
  border-top:2px solid transparent;
  background-image:linear-gradient(var(--dark),var(--dark)),linear-gradient(90deg,var(--cyan),var(--magenta) 60%,transparent);
  background-origin:border-box;
  background-clip:padding-box,border-box;
  padding:60px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.9;color:#8FA0C8;}
.footer-col h4{color:var(--cyan);font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul li + li{margin-top:10px;}
.footer-col a{font-size:14px;color:#A9B6D8;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;color:#8FA0C8;margin-bottom:8px;}
.footer-bottom{
  margin-top:48px;padding:22px 0;text-align:center;font-size:13px;color:#7A88AE;
  border-top:1px solid rgba(255,255,255,.08);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--container:1140px;}
  .wide-item{grid-template-columns:260px minmax(0,1fr);}
}
@media (max-width:991px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:absolute;top:60px;left:0;right:0;
    background:var(--dark);flex-direction:column;align-items:stretch;gap:0;
    padding:8px 16px 16px;margin-left:0;
    border-bottom:1px solid rgba(255,255,255,.08);
    display:none;
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:15px 8px;font-size:15px;color:#C9D2E8;border-bottom:1px solid rgba(255,255,255,.08);border-radius:0;min-height:52px;display:flex;align-items:center;}
  .main-nav a::after{display:none;}
  .main-nav a.is-active{background:rgba(43,224,208,.08);}
  .header-inner{position:relative;min-height:60px;}
  .nav-wrap{gap:12px;}
  .nav-cta{padding:9px 14px;font-size:14px;}
  .brand-text{font-size:15px;}
  .split-layout{grid-template-columns:1fr;gap:28px;}
  .side-panel{position:static;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  :root{--section-gap:64px;}
  .page-hero h1{font-size:32px;}
}
@media (max-width:767px){
  :root{--section-gap:56px;}
  .container{padding:0 20px;}
  body{font-size:16px;}
  h1{font-size:28px;}
  h2, .section-head h2{font-size:24px;}
  h3, .wide-body h3{font-size:18px;}
  .page-hero-inner{padding:40px 0 38px;min-height:220px;}
  .page-hero h1{font-size:26px;}
  .hero-rule{margin:14px 0 12px;}
  .wide-item{grid-template-columns:1fr;gap:16px;padding:16px;}
  .wide-thumb{aspect-ratio:16/9;}
  .cta-form{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-bottom{margin-top:32px;}
  .nav-cta{display:none;}
  .nav-toggle{margin-left:auto;}
}
@media (max-width:559px){
  .container{padding:0 16px;}
  .page-hero h1{font-size:24px;}
  .btn{width:100%;}
  .cta-copy h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-chips{gap:8px;}
  .chip{font-size:12px;padding:5px 11px;}
  tbody td,thead th{padding:12px 14px;font-size:14px;}
}

/* roulang page: category3 */
:root{
  --primary:#3B5BFF;
  --primary-dark:#2843D6;
  --primary-soft:#EEF1FF;
  --dark:#0A1030;
  --cyan:#2BE0D0;
  --magenta:#FF4D9D;
  --orange:#FF9F1C;
  --orange-dark:#F08A00;
  --bg:#F4F6FB;
  --bg-soft:#EEF2FB;
  --card:#FFFFFF;
  --text:#101828;
  --text-2:#4A5568;
  --text-3:#8A94A6;
  --border:#E4E9F2;
  --success:#17B26A;
  --warning:#F79009;
  --error:#F04438;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 12px 32px -16px rgba(16,24,40,.14);
  --shadow-hover:0 18px 40px -18px rgba(16,24,40,.22);
  --glow:0 0 0 1px rgba(43,224,208,.35), 0 0 18px rgba(43,224,208,.32);
  --container:1200px;
  --section-gap:88px;
  --font:system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono:ui-monospace, Menlo, Consolas, "Courier New", monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  letter-spacing:-0.01em;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary);}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{line-height:1.25;font-weight:700;margin:0;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.sec{padding:var(--section-gap) 0;}
.sec-tight{padding:64px 0;}
.sec-soft{background:var(--bg-soft);}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head h2{font-size:30px;margin-bottom:14px;}
.sec-head h2::after{
  content:"";
  display:block;
  width:52px;height:4px;
  margin-top:14px;
  border-radius:2px;
  background:var(--primary);
}
.sec-head p{color:var(--text-2);font-size:16px;}

/* ---------- header ---------- */
.site-header{
  background:var(--dark);
  position:sticky;
  top:0;
  z-index:60;
}
.site-header::after{
  content:"";
  display:block;
  height:2px;
  background:linear-gradient(90deg, var(--cyan), var(--magenta) 45%, rgba(255,255,255,0));
}
.header-inner{display:flex;align-items:center;}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:28px;
  min-height:68px;
  width:100%;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;color:#fff;}
.brand:hover{color:#fff;}
.brand-mark{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,var(--cyan),var(--primary));
  color:#06122B;
  font-family:var(--mono);
  font-weight:700;
  font-size:15px;
  letter-spacing:0;
}
.brand-text{
  display:flex;
  flex-direction:column;
  font-size:16px;
  font-weight:700;
  color:#fff;
  line-height:1.2;
}
.brand-text small{
  font-size:11px;
  font-weight:400;
  color:#8FA0C6;
  letter-spacing:.06em;
  margin-top:3px;
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{
  position:relative;
  padding:8px 14px;
  font-size:15px;
  color:#C9D2E8;
  border-radius:8px;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:1px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.04);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{
  color:var(--cyan);
  background:rgba(43,224,208,.08);
  box-shadow:inset 0 0 0 1px rgba(43,224,208,.22);
}
.main-nav a.is-active::after{transform:scaleX(1);box-shadow:var(--glow);}
.nav-cta{
  margin-left:14px;
  padding:11px 20px;
  border-radius:var(--radius-btn);
  background:var(--orange);
  color:#22160A;
  font-size:15px;
  font-weight:700;
  white-space:nowrap;
  transition:background .2s ease, transform .15s ease, box-shadow .2s ease;
}
.nav-cta:hover{background:#FFB347;color:#22160A;box-shadow:0 10px 24px -10px rgba(255,159,28,.7);}
.nav-cta:active{transform:translateY(1px);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  margin-left:auto;
  border:1px solid rgba(255,255,255,.14);
  border-radius:10px;
  background:transparent;
  cursor:pointer;
  padding:0;
  place-items:center;
}
.nav-toggle span{
  display:block;
  width:20px;height:2px;
  margin:3px auto;
  border-radius:2px;
  background:var(--cyan);
  transition:transform .2s ease, opacity .2s ease;
}

/* ---------- hero (窄版) ---------- */
.page-hero{
  position:relative;
  padding:64px 0 56px;
  background-color:var(--bg-soft);
  background-image:linear-gradient(100deg, rgba(244,246,251,.94) 0%, rgba(244,246,251,.86) 46%, rgba(244,246,251,.58) 100%), url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--border);
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-3);
  margin-bottom:20px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb span.sep{color:#C3CCDD;}
.page-hero h1{
  font-size:44px;
  max-width:820px;
  margin-bottom:18px;
}
.page-hero .hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:700px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--primary-soft);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.tag-cyan{background:rgba(43,224,208,.12);color:#0F8E85;}
.tag-orange{background:rgba(255,159,28,.14);color:#B26A00;}
.tag-magenta{background:rgba(255,77,157,.12);color:#C42B72;}

/* ---------- kpi ---------- */
.kpi-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:8px;
}
.kpi{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow);
}
.kpi-num{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:32px;
  font-weight:700;
  color:var(--primary);
  line-height:1.1;
}
.kpi-num small{font-size:15px;font-weight:600;margin-left:4px;color:var(--text-2);}
.kpi-label{margin-top:10px;font-size:14px;color:var(--text-2);}
.kpi-bar{
  margin-top:16px;
  height:6px;
  border-radius:999px;
  background:#EDF1F9;
  overflow:hidden;
}
.kpi-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--cyan),var(--primary));}

/* ---------- 时间轴 ---------- */
.timeline{
  position:relative;
  padding-left:38px;
  margin-top:8px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:9px;top:10px;bottom:10px;
  width:2px;
  background:linear-gradient(180deg, rgba(43,224,208,.75), rgba(59,91,255,.45) 55%, rgba(228,233,242,1));
}
.tl-item{position:relative;padding-bottom:44px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-38px;top:6px;
  width:14px;height:14px;
  border-radius:50%;
  background:#fff;
  border:3px solid var(--primary);
  box-shadow:0 0 0 5px rgba(59,91,255,.08);
}
.tl-item.is-key::before{
  border-color:var(--cyan);
  box-shadow:0 0 0 5px rgba(43,224,208,.16);
}
.tl-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow);
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D5DEEC;}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:12px;}
.tl-step{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:700;
  color:#0F8E85;
  background:rgba(43,224,208,.12);
  padding:4px 12px;
  border-radius:999px;
}
.tl-date{font-size:14px;color:var(--text-3);font-family:var(--mono);font-variant-numeric:tabular-nums;}
.tl-card h3{font-size:20px;margin-bottom:12px;}
.tl-card p{color:var(--text-2);font-size:16px;}
.tl-media{
  margin-top:18px;
  border-radius:var(--radius-img);
  overflow:hidden;
  aspect-ratio:16/9;
  background:#E8ECF5 url("/assets/images/coverpic/cover-3.png") center/cover no-repeat;
  border:1px solid var(--border);
}
.tl-media img{width:100%;height:100%;object-fit:cover;}
.tl-points{display:grid;gap:10px;margin-top:16px;}
.tl-points li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  color:var(--text-2);
}
.tl-points li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:2px;
  border-radius:2px;
  background:var(--cyan);
}

/* ---------- 表格 ---------- */
.table-scroll{
  overflow-x:auto;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
}
table.stage-table{
  width:100%;
  min-width:720px;
  border-collapse:collapse;
  font-size:15px;
}
table.stage-table caption{
  text-align:left;
  padding:22px 24px 8px;
  font-size:14px;
  color:var(--text-3);
}
table.stage-table th,
table.stage-table td{
  padding:16px 24px;
  text-align:left;
  border-bottom:1px solid var(--border);
  vertical-align:top;
}
table.stage-table thead th{
  background:#F7F9FE;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--text-2);
  font-weight:700;
  white-space:nowrap;
}
table.stage-table tbody tr:nth-child(even){background:#FAFBFE;}
table.stage-table tbody tr:last-child td{border-bottom:none;}
table.stage-table td strong{color:var(--text);font-weight:600;}
.badge-pill{
  display:inline-block;
  padding:3px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
}
.badge-open{background:rgba(23,178,106,.12);color:#0E8452;}
.badge-wait{background:rgba(247,144,9,.14);color:#B26A00;}
.badge-done{background:var(--primary-soft);color:var(--primary);}

/* ---------- 提示条 ---------- */
.notice{
  margin-top:28px;
  display:flex;
  gap:16px;
  padding:20px 24px;
  border-radius:var(--radius-card);
  background:var(--primary-soft);
  border:1px solid #DCE3FF;
  border-left:4px solid var(--primary);
}
.notice strong{display:block;font-size:16px;margin-bottom:6px;}
.notice p{color:var(--text-2);font-size:15px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;}
details.faq{
  background:var(--card);
  border:1px solid var(--border);
  border-left:3px solid #CBD4E4;
  border-radius:12px;
  padding:18px 22px;
  box-shadow:var(--shadow);
  transition:border-color .25s ease, transform .25s ease;
}
details.faq[open]{
  border-left-color:var(--cyan);
  transform:translateX(-2px);
}
details.faq summary{
  cursor:pointer;
  list-style:none;
  font-size:16px;
  font-weight:600;
  position:relative;
  padding-right:34px;
}
details.faq summary::-webkit-details-marker{display:none;}
details.faq summary::after{
  content:"";
  position:absolute;
  right:4px;top:8px;
  width:9px;height:9px;
  border-right:2px solid var(--text-3);
  border-bottom:2px solid var(--text-3);
  transform:rotate(45deg);
  transition:transform .22s ease;
}
details.faq[open] summary::after{transform:rotate(-135deg);top:12px;}
details.faq p{
  margin-top:12px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ---------- CTA 窄带 ---------- */
.cta-band{
  position:relative;
  background:var(--dark);
  color:#fff;
  border-top:1px solid rgba(43,224,208,.35);
  border-bottom:1px solid rgba(43,224,208,.35);
  box-shadow:inset 0 1px 0 rgba(43,224,208,.12);
  padding:56px 0;
}
.cta-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;}
.cta-band h2{font-size:28px;margin-bottom:12px;color:#fff;}
.cta-band .cta-desc{color:#A9B6D6;font-size:16px;}
.cta-band .cta-desc + .cta-desc{margin-top:8px;}
.band-line{
  width:64px;height:3px;
  border-radius:2px;
  background:var(--cyan);
  box-shadow:var(--glow);
  margin-bottom:20px;
}
.form-grid{display:grid;gap:14px;}
.field{display:grid;gap:6px;}
.field label{font-size:13px;color:#A9B6D6;letter-spacing:.02em;}
.field input{
  height:46px;
  padding:0 14px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.16);
  background:#fff;
  color:var(--text);
  transition:border-color .2s ease, box-shadow .2s ease;
}
.field input::placeholder{color:#98A2B3;}
.field input:focus{
  outline:none;
  border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(43,224,208,.25);
}
.field .err{font-size:12px;color:#FF8FA8;min-height:14px;}
.field.has-error input{border-color:var(--error);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  transition:background .2s ease, color .2s ease, box-shadow .2s ease, transform .15s ease, border-color .2s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--orange);color:#22160A;}
.btn-primary:hover{background:#FFB347;color:#22160A;box-shadow:0 12px 26px -12px rgba(255,159,28,.8);}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary);}
.btn-light{background:#fff;color:var(--dark);}
.btn-light:hover{background:#E9EEFF;color:var(--dark);}
.btn:disabled{opacity:.4;cursor:not-allowed;}
.btn-block{width:100%;}

/* ---------- 返回文字链 ---------- */
.back-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--primary);
}
.back-link span{transition:transform .2s ease;}
.back-link:hover span{transform:translateX(4px);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--dark);
  color:#A9B6D6;
  padding:64px 0 0;
  border-top:1px solid rgba(43,224,208,.28);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.8;color:#8FA0C6;max-width:320px;}
.footer-col h4{
  font-size:14px;
  color:var(--cyan);
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,
.footer-col p{font-size:14px;color:#A9B6D6;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0;
  text-align:center;
  font-size:13px;
  color:#7C8CB4;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:100%;}
  .kpi-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  :root{--section-gap:64px;}
  .nav-toggle{display:grid;}
  .main-nav{
    position:absolute;
    left:0;right:0;
    top:100%;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:var(--dark);
    padding:8px 0 16px;
    border-top:1px solid rgba(255,255,255,.08);
    box-shadow:0 24px 40px -24px rgba(0,0,0,.6);
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{
    height:52px;
    display:flex;
    align-items:center;
    padding:0 24px;
    border-radius:0;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .main-nav a::after{display:none;}
  .main-nav a.is-active{box-shadow:none;background:rgba(43,224,208,.08);}
  .nav-wrap{position:relative;gap:14px;padding:10px 0;}
  .nav-cta{display:none;}
  .page-hero{padding:48px 0 44px;}
  .page-hero h1{font-size:32px;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .brand-text{font-size:15px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .sec-head h2{font-size:24px;}
  .page-hero h1{font-size:28px;}
  .kpi-grid{grid-template-columns:1fr;gap:16px;}
  .timeline{padding-left:26px;}
  .timeline::before{left:5px;}
  .tl-item::before{left:-26px;width:12px;height:12px;border-width:3px;}
  .tl-item{padding-bottom:32px;}
  .tl-card{padding:20px;}
  .tl-card h3{font-size:18px;}
  .cta-band h2{font-size:24px;}
}
@media (max-width:559px){
  .page-hero{padding:36px 0 34px;}
  .page-hero h1{font-size:26px;}
  .btn{width:100%;}
  .hero-tags{gap:8px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{font-size:12px;}
}

/* roulang page: category4 */
:root{
  --indigo:#3B5BFF;
  --indigo-dark:#2A44D6;
  --dark:#0A1030;
  --dark-2:#121A44;
  --cyan:#2BE0D0;
  --magenta:#FF4D9D;
  --orange:#FF9F1C;
  --orange-dark:#E88A0A;
  --bg:#F4F6FB;
  --bg-soft:#EEF2FB;
  --card:#FFFFFF;
  --text:#101828;
  --text-sub:#4A5568;
  --text-weak:#8A94A6;
  --line:#E4E9F2;
  --success:#17B26A;
  --warn:#F79009;
  --error:#F04438;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 12px 32px -16px rgba(16,24,40,.14);
  --shadow-hover:0 18px 40px -18px rgba(16,24,40,.22);
  --glow:0 0 0 1px rgba(43,224,208,.35), 0 0 18px rgba(43,224,208,.32);
  --sec:88px;
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  letter-spacing:-0.005em;
}
img{max-width:100%;display:block;border:0}
a{color:var(--indigo);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--indigo-dark)}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-0.01em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--dark);
  border-bottom:2px solid transparent;
  border-image:linear-gradient(90deg,var(--cyan),var(--magenta),rgba(10,16,48,0)) 1;
}
.header-inner{display:flex;align-items:center;min-height:68px}
.nav-wrap{display:flex;align-items:center;gap:24px;width:100%}
.brand{display:flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto}
.brand:hover{color:#fff}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font:700 15px/1 var(--mono);letter-spacing:.02em;color:#04122A;
  background:linear-gradient(135deg,var(--cyan),var(--indigo));
  box-shadow:0 0 0 1px rgba(43,224,208,.35);
}
.brand-text{display:flex;flex-direction:column;font-size:16px;font-weight:700;line-height:1.2}
.brand-text small{font-size:11px;font-weight:400;color:#8FA0C8;letter-spacing:.08em;margin-top:3px}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 12px;
  border-radius:9px;font-size:15px;color:#C9D2E8;white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.main-nav a:hover{color:#fff}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{
  color:var(--cyan);background:rgba(43,224,208,.08);
  box-shadow:inset 0 0 0 1px rgba(43,224,208,.18);
}
.main-nav a.is-active::after{transform:scaleX(1);box-shadow:var(--glow)}
.nav-cta{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  height:42px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--orange);color:#1A1200;font-size:15px;font-weight:700;
  transition:background .18s ease,transform .12s ease,box-shadow .18s ease;
}
.nav-cta:hover{background:#FFB244;color:#1A1200;box-shadow:0 10px 24px -12px rgba(255,159,28,.9)}
.nav-cta:active{transform:translateY(1px)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--cyan);border-radius:2px;transition:transform .2s ease,opacity .2s ease}

/* ============ HERO ============ */
.cat-hero{
  position:relative;overflow:hidden;
  background-color:#E9EEF9;
  background-image:linear-gradient(100deg,rgba(244,246,251,.94) 0%,rgba(244,246,251,.86) 46%,rgba(238,242,251,.72) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero::after{
  content:"";position:absolute;right:-60px;top:-40px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,224,208,.22),rgba(43,224,208,0) 68%);
}
.cat-hero .container{position:relative;z-index:2;padding-top:44px;padding-bottom:48px;min-height:268px;display:flex;flex-direction:column;justify-content:center}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-weak);margin-bottom:16px}
.crumbs a{color:var(--text-sub)}
.crumbs a:hover{color:var(--indigo)}
.crumbs .sep{color:#C3CBDD}
.crumbs .now{color:var(--text);font-weight:600}
.cat-hero h1{font-size:40px;max-width:760px}
.cat-hero h1 em{font-style:normal;color:var(--indigo)}
.hero-rule{width:56px;height:4px;border-radius:3px;background:var(--indigo);margin:18px 0 16px}
.cat-hero p{max-width:680px;font-size:17px;color:var(--text-sub)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 13px;border-radius:999px;font-size:13px;background:#fff;border:1px solid var(--line);color:var(--text-sub);box-shadow:0 1px 2px rgba(16,24,40,.04)}
.tag b{color:var(--indigo);font-weight:700}
.tag.cyan{background:rgba(43,224,208,.12);border-color:rgba(43,224,208,.4);color:#0F6F68}

/* ============ SECTION ============ */
.section{padding:var(--sec) 0}
.section.soft{background:var(--bg-soft)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:30px}
.section-head h2 em{font-style:normal;color:var(--indigo)}
.section-head .line{width:48px;height:4px;border-radius:3px;background:var(--indigo);margin:16px 0 14px}
.section-head p{color:var(--text-sub)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--indigo);letter-spacing:.06em;margin-bottom:12px}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--cyan);border-radius:2px}

/* ============ FEATURE BLOCK (大图条目) ============ */
.feature{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);overflow:hidden;
}
.feature-media{position:relative;aspect-ratio:21/9;background:#E8ECF6}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-media .badge-float{
  position:absolute;left:20px;top:20px;height:32px;padding:0 14px;border-radius:999px;
  display:inline-flex;align-items:center;font-size:13px;font-weight:600;color:#fff;
  background:rgba(10,16,48,.72);box-shadow:var(--glow);
}
.feature-media .cap-float{
  position:absolute;right:20px;bottom:20px;padding:8px 14px;border-radius:10px;
  background:rgba(255,255,255,.82);font-size:13px;color:var(--text-sub);border:1px solid rgba(255,255,255,.6);
}
.feature-body{padding:32px 32px 36px}
.feature-body h3{font-size:24px;margin-bottom:14px}
.feature-body p{color:var(--text-sub)}
.feature-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;margin-top:26px}
.checklist li{position:relative;padding-left:26px;margin-bottom:12px;color:var(--text-sub);font-size:15.5px}
.checklist li::before{
  content:"";position:absolute;left:0;top:10px;width:9px;height:9px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 0 3px rgba(43,224,208,.18);
}
.checklist li b{color:var(--text)}
.kpi-panel{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:22px;
  display:flex;flex-direction:column;gap:18px;
}
.kpi{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px dashed var(--line)}
.kpi:last-child{border-bottom:0;padding-bottom:0}
.kpi .num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--indigo);font-variant-numeric:tabular-nums}
.kpi .num.cyan{color:#12897E}
.kpi .num.warn{color:var(--warn)}
.kpi .lbl{font-size:13.5px;color:var(--text-weak);text-align:right}

/* ============ 2x2 对照矩阵 ============ */
.matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.mcard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);padding:24px;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.mcard:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D3DBEA}
.mcard-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:16px}
.mcard-head h3{font-size:19px}
.mcard-head .idx{
  font-family:var(--mono);font-size:15px;font-weight:700;color:#0F6F68;
  background:rgba(43,224,208,.14);border:1px solid rgba(43,224,208,.35);
  border-radius:8px;padding:4px 9px;flex:0 0 auto;
}
.contrast{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:auto}
.cbox{border-radius:12px;padding:14px;font-size:14px;line-height:1.7;border:1px solid var(--line)}
.cbox h4{font-size:13px;letter-spacing:.04em;margin-bottom:8px;display:flex;align-items:center;gap:6px}
.cbox h4 i{width:8px;height:8px;border-radius:50%;display:inline-block}
.cbox.good{background:rgba(23,178,106,.06);border-color:rgba(23,178,106,.25)}
.cbox.good h4{color:#0E7A4C}
.cbox.good h4 i{background:var(--success)}
.cbox.risk{background:rgba(240,68,56,.05);border-color:rgba(240,68,56,.22)}
.cbox.risk h4{color:#B42318}
.cbox.risk h4 i{background:var(--error)}
.cbox p{color:var(--text-sub)}
.mcard .foot-link{margin-top:18px;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.mcard .foot-link span{transition:transform .2s ease;display:inline-block}
.mcard .foot-link:hover span{transform:translateX(4px)}

/* ============ 对照表 ============ */
.table-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);overflow:hidden;
}
.table-scroll{overflow-x:auto}
table{width:100%;border-collapse:collapse;min-width:760px;font-size:15px}
caption{text-align:left;padding:22px 24px 4px;font-size:15px;color:var(--text-weak)}
th,td{padding:15px 24px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
thead th{
  background:var(--bg-soft);font-size:13.5px;font-weight:700;color:var(--text-sub);
  letter-spacing:.04em;white-space:nowrap;
}
tbody tr:nth-child(even){background:#FAFBFE}
tbody tr:last-child td{border-bottom:0}
td strong{color:var(--text)}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12.5px;font-weight:600;white-space:nowrap}
.pill.ok{background:rgba(23,178,106,.12);color:#0E7A4C}
.pill.mid{background:rgba(247,144,9,.14);color:#94600A}
.pill.bad{background:rgba(240,68,56,.12);color:#B42318}

/* ============ 步骤条 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:36px}
.step{
  background:var(--card);border:1px solid var(--line);border-left:3px solid var(--line);
  border-radius:14px;padding:22px;box-shadow:var(--shadow);transition:border-color .2s ease,transform .2s ease;
}
.step:hover{border-left-color:var(--cyan);transform:translateY(-3px)}
.step .n{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--indigo);letter-spacing:.08em}
.step h4{font-size:17px;margin:8px 0 10px}
.step p{font-size:14.5px;color:var(--text-sub)}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq details{
  background:var(--card);border:1px solid var(--line);border-left:3px solid #C9D2E8;
  border-radius:14px;box-shadow:0 1px 2px rgba(16,24,40,.04);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.faq details[open]{border-left-color:var(--cyan);box-shadow:var(--shadow)}
.faq summary{
  list-style:none;cursor:pointer;padding:18px 22px;font-size:16px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";font-family:var(--mono);font-size:20px;color:var(--indigo);
  flex:0 0 auto;transition:transform .2s ease;
}
.faq details[open] summary::after{content:"–";transform:rotate(180deg)}
.faq .ans{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-sub)}

/* ============ CTA ============ */
.cta-band{
  position:relative;background:var(--dark);color:#fff;overflow:hidden;
  border-top:1px solid rgba(43,224,208,.45);border-bottom:1px solid rgba(43,224,208,.45);
  box-shadow:0 0 22px -6px rgba(43,224,208,.25) inset;
}
.cta-band::before{
  content:"";position:absolute;left:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(59,91,255,.38),rgba(59,91,255,0) 70%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center;padding:64px 0}
.cta-copy h2{font-size:30px;color:#fff}
.cta-copy p{color:#A9B4D2;margin-top:14px;max-width:460px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cta-points span{
  font-size:13px;color:#CFE9E5;padding:5px 12px;border-radius:999px;
  background:rgba(43,224,208,.1);border:1px solid rgba(43,224,208,.3);
}
.form-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-card);padding:26px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font-size:13.5px;color:#C9D2E8}
.field input,.field textarea{
  height:46px;background:#fff;border:1px solid transparent;border-radius:var(--r-btn);
  padding:0 14px;color:var(--text);font-size:15px;transition:box-shadow .18s ease,border-color .18s ease;
}
.field textarea{height:88px;padding:12px 14px;resize:vertical;line-height:1.6}
.field input::placeholder,.field textarea::placeholder{color:#A6AFC4}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(43,224,208,.28)}
.field .err{font-size:12.5px;color:#FF8A80;display:none}
.field.has-error input,.field.has-error textarea{border-color:var(--error)}
.field.has-error .err{display:block}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:700;
  transition:background .18s ease,transform .12s ease,box-shadow .18s ease,color .18s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--orange);color:#1A1200}
.btn-primary:hover{background:#FFB244;color:#1A1200;box-shadow:0 12px 26px -14px rgba(255,159,28,.95)}
.btn-ghost{background:transparent;color:var(--indigo);box-shadow:inset 0 0 0 2px var(--indigo)}
.btn-ghost:hover{background:rgba(59,91,255,.08);color:var(--indigo-dark)}
.btn-quiet{background:transparent;color:#C9D2E8;box-shadow:inset 0 0 0 1px rgba(255,255,255,.22)}
.btn-quiet:hover{color:#fff;background:rgba(255,255,255,.08)}
.form-note{font-size:12.5px;color:#8FA0C8;margin-top:6px}

/* ============ BOTTOM LINK ============ */
.back-link{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:44px;font-size:15px;color:var(--text-sub)}
.back-link a{font-weight:600;display:inline-flex;align-items:center;gap:6px}
.back-link a span{transition:transform .2s ease}
.back-link a:hover span{transform:translateX(4px)}

/* ============ FOOTER ============ */
.site-footer{background:var(--dark);color:#A9B4D2;margin-top:0;border-top:1px solid rgba(43,224,208,.4)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding:64px 0 40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:#8FA0C8;max-width:320px}
.footer-col h4{font-size:14px;color:var(--cyan);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:#C9D2E8}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;color:#8FA0C8;margin-bottom:10px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0 26px;text-align:center;font-size:13px;color:#7D89A8}

/* ============ RESPONSIVE ============ */
@media (max-width:1199px){
  .container{padding:0 22px}
  .cat-hero h1{font-size:34px}
}
@media (max-width:991px){
  .nav-toggle{display:flex}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;
    background:var(--dark-2);border-bottom:1px solid rgba(255,255,255,.08);
    padding:8px 16px 16px;display:none;
  }
  .main-nav.is-open{display:flex}
  .main-nav a{height:52px;padding:0 12px;border-radius:8px;border-bottom:1px solid rgba(255,255,255,.08)}
  .main-nav a::after{display:none}
  .main-nav a:last-child{border-bottom:0}
  .nav-wrap{position:relative;justify-content:space-between}
  .nav-cta{margin-left:auto;margin-right:10px}
  .brand-text{font-size:15px}
  .feature-grid{grid-template-columns:1fr}
  .matrix{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:56px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 32px}
  .section{padding:64px 0}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  :root{--sec:56px}
  .cat-hero .container{padding-top:32px;padding-bottom:36px}
  .cat-hero h1{font-size:28px}
  .cat-hero p{font-size:15.5px}
  .section-head h2,.cta-copy h2{font-size:24px}
  .feature-media{aspect-ratio:16/9}
  .feature-body{padding:24px 20px 28px}
  .feature-body h3{font-size:20px}
  .contrast{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .mcard,.kpi-panel{padding:20px}
}
@media (max-width:559px){
  .brand-text small{display:none}
  .nav-cta{display:none}
  .cat-hero h1{font-size:26px}
  .btn,.form-actions .btn{width:100%}
  .form-actions{flex-direction:column;align-items:stretch}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category5 */
:root{
  --brand:#3B5BFF; --brand-soft:#E8EDFF; --ink:#0A1030; --cyan:#2BE0D0; --magenta:#FF4D9D;
  --amber:#FF9F1C; --bg:#F4F6FB; --bg-soft:#EEF2FB; --card:#FFFFFF;
  --text:#101828; --text-2:#4A5568; --text-3:#8A94A6; --line:#E4E9F2;
  --ok:#17B26A; --warn:#F79009; --err:#F04438;
  --r-card:16px; --r-btn:10px; --r-input:10px; --r-img:12px;
  --sh:0 1px 2px rgba(16,24,40,.04), 0 12px 32px -16px rgba(16,24,40,.14);
  --sh-hover:0 18px 40px -18px rgba(16,24,40,.22);
  --glow:0 0 0 1px rgba(43,224,208,.35), 0 0 18px rgba(43,224,208,.32);
  --section:88px; --container:1200px;
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:17px;line-height:1.85;color:var(--text);background:var(--bg);letter-spacing:-0.01em}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-0.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--ink);border-bottom:1px solid rgba(255,255,255,.06)}
.site-header::after{content:"";display:block;height:2px;background:linear-gradient(90deg,rgba(43,224,208,.9),rgba(255,77,157,.7),rgba(10,16,48,0))}
.header-inner{display:flex;align-items:center}
.nav-wrap{display:flex;align-items:center;gap:24px;width:100%;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--cyan),var(--brand));color:#04102a;font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.02em}
.brand-text{display:flex;flex-direction:column;color:#fff;font-size:16px;font-weight:700;line-height:1.15}
.brand-text small{color:#8A94A6;font-size:11px;font-weight:500;letter-spacing:.04em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.main-nav a{position:relative;padding:10px 12px;border-radius:8px;color:#C9D2E8;font-size:15px;white-space:nowrap}
.main-nav a::after{content:"";position:absolute;left:12px;right:12px;bottom:4px;height:1px;background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.04)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--cyan);background:rgba(43,224,208,.09);box-shadow:inset 0 0 0 1px rgba(43,224,208,.22)}
.main-nav a.is-active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(43,224,208,.55)}
.nav-cta{margin-left:auto;flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 18px;border-radius:var(--r-btn);background:var(--amber);color:#2A1500;font-size:14px;font-weight:700;transition:transform .18s ease,filter .18s ease}
.nav-cta:hover{color:#2A1500;filter:brightness(1.07);transform:translateY(-1px)}
.nav-cta:active{transform:translateY(0)}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:40px;padding:0 10px;border:1px solid rgba(255,255,255,.12);border-radius:10px;background:rgba(255,255,255,.03);cursor:pointer}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--cyan)}
.nav-toggle[aria-expanded="true"]{background:rgba(43,224,208,.12)}

/* ---------- 窄版 Hero ---------- */
.page-hero{position:relative;min-height:280px;display:flex;align-items:center;background-image:linear-gradient(180deg,rgba(244,246,251,.86),rgba(244,246,251,.94)),url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center;border-bottom:1px solid var(--line)}
.page-hero .container{padding-top:52px;padding-bottom:52px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:14px}
.crumb a{color:var(--text-2)}
.crumb span.sep{color:#C2CAD9}
.crumb .now{color:var(--text-2);font-weight:600}
.page-hero h1{font-size:44px;max-width:16em}
.hero-rule{width:64px;height:4px;border-radius:2px;background:var(--brand);margin:18px 0 16px}
.hero-sub{max-width:44em;color:var(--text-2);font-size:17px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600}
.tag.cyan{background:rgba(43,224,208,.14);color:#0C7F76}
.tag.amber{background:rgba(255,159,28,.16);color:#93540A}
.tag.rose{background:rgba(255,77,157,.12);color:#B03071}

/* ---------- 数据条 ---------- */
.kpi-band{background:var(--card);border-bottom:1px solid var(--line)}
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 0}
.kpi{border-left:3px solid var(--line);padding-left:18px}
.kpi:first-child{border-left-color:var(--cyan)}
.kpi strong{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:34px;line-height:1.1;color:var(--ink)}
.kpi span{display:block;margin-top:6px;font-size:13px;color:var(--text-3)}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section) 0}
.section.soft{background:var(--bg-soft)}
.section-head{max-width:46em;margin-bottom:44px}
.section-head h2{font-size:30px}
.section-head h2::after{content:"";display:block;width:46px;height:4px;border-radius:2px;background:var(--brand);margin-top:14px}
.section-head p{margin-top:14px;color:var(--text-2)}

/* ---------- 大图交错条目 ---------- */
.feature-list{display:flex;flex-direction:column;gap:56px}
.feature{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);padding:20px;transition:box-shadow .25s ease,transform .25s ease}
.feature:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.feature .media{position:relative;grid-column:1;aspect-ratio:16/10;overflow:hidden;border-radius:var(--r-img);background:linear-gradient(135deg,#EEF2FB 0%,#E1E8F8 50%,#EEF2FB 100%)}
.feature .media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.feature:hover .media img{transform:scale(1.03)}
.feature .media .chip{position:absolute;left:14px;top:14px;padding:5px 12px;border-radius:999px;background:rgba(10,16,48,.72);color:#E8EDFF;font-size:12px;font-weight:600;backdrop-filter:blur(4px)}
.feature .body{grid-column:2}
.feature h3{font-size:20px}
.feature .body p{margin-top:12px;color:var(--text-2);font-size:16px;line-height:1.85}
.feature .mini{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.feature .mini li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2)}
.feature .mini li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--cyan)}
.feature.flip .media{grid-column:2}
.feature.flip .body{grid-column:1;grid-row:1}
.feature .linkline{display:inline-flex;align-items:center;gap:6px;margin-top:16px;color:var(--brand);font-size:14px;font-weight:600}
.feature .linkline .arw{transition:transform .2s ease}
.feature:hover .linkline .arw{transform:translateX(4px)}

/* ---------- 起步清单 ---------- */
.steps{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.step{display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:start;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh);transition:box-shadow .25s ease,transform .25s ease}
.step:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.step .num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--cyan);line-height:1}
.step h3{font-size:18px}
.step p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.8}
.step .meta{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.step .meta i{font-style:normal;font-size:12px;color:var(--text-3);border:1px solid var(--line);border-radius:999px;padding:3px 10px}

/* ---------- 注意事项 ---------- */
.notes{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.note{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--cyan);border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh)}
.note h3{font-size:17px}
.note p{margin-top:10px;font-size:15px;color:var(--text-2)}
.note.warn{border-left-color:var(--warn)}
.note.ok{border-left-color:var(--ok)}
.note.brand{border-left-color:var(--brand)}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq details{background:var(--card);border:1px solid var(--line);border-left:3px solid #D6DCE8;border-radius:var(--r-card);box-shadow:var(--sh);padding:18px 22px;transition:border-color .22s ease,padding-left .22s ease,box-shadow .22s ease}
.faq details[open]{border-left-color:var(--cyan);padding-left:26px;box-shadow:var(--sh-hover)}
.faq summary{cursor:pointer;list-style:none;font-size:16px;font-weight:600;display:flex;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";margin-left:auto;font-family:var(--mono);font-size:18px;color:var(--text-3)}
.faq details[open] summary::after{content:"–";color:var(--cyan)}
.faq details p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- CTA 窄带 ---------- */
.cta-band{background:var(--ink);position:relative;padding:56px 0;border-top:1px solid rgba(43,224,208,.35);border-bottom:1px solid rgba(43,224,208,.35);box-shadow:var(--glow)}
.cta-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center}
.cta-inner h2{color:#fff;font-size:28px}
.cta-inner p{margin-top:12px;color:#A9B4D0;font-size:15px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}
.cta-form input{height:46px;min-width:220px;flex:1 1 220px;padding:0 16px;border-radius:var(--r-input);border:1px solid rgba(255,255,255,.18);background:#fff;color:var(--text)}
.cta-form input::placeholder{color:#98A2B3}
.cta-form input:focus{border-color:var(--cyan);outline:none;box-shadow:0 0 0 3px rgba(43,224,208,.25)}
.btn{display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 24px;border:1px solid transparent;border-radius:var(--r-btn);font-size:15px;font-weight:700;cursor:pointer;transition:transform .18s ease,filter .18s ease,background .18s ease,color .18s ease}
.btn-primary{background:var(--amber);color:#2A1500}
.btn-primary:hover{color:#2A1500;filter:brightness(1.07);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--cyan);color:var(--cyan)}
.btn-outline:hover{color:#04121A;background:var(--cyan)}
.btn:disabled{opacity:.4;cursor:not-allowed}
.form-hint{width:100%;text-align:right;color:#8A94A6;font-size:13px}
.form-error{color:#FF9AA2;font-size:13px}

/* ---------- 尾部链接 ---------- */
.backlink{display:flex;justify-content:center;padding:48px 0 8px}
.backlink a{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand)}
.backlink a:hover .arw{transform:translateX(4px)}
.backlink .arw{transition:transform .2s ease}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#A9B4D0;padding-top:64px;position:relative}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,rgba(43,224,208,.8),rgba(255,77,157,.5),rgba(10,16,48,0))}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:44px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#8E9AB8}
.footer-col h4{font-size:14px;color:var(--cyan);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:#A9B4D0}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;margin-bottom:8px;color:#8E9AB8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:13px;color:#7C87A5}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .page-hero h1{font-size:38px}
}
@media (max-width:991px){
  .nav-toggle{display:flex;margin-left:12px}
  .nav-cta{margin-left:auto;height:36px;padding:0 14px;font-size:13px}
  .main-nav{position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;margin:0;padding:8px 12px 16px;background:var(--ink);border-bottom:1px solid rgba(255,255,255,.08);box-shadow:0 24px 40px -24px rgba(0,0,0,.7);display:none}
  .main-nav.is-open{display:flex}
  .main-nav a{height:52px;display:flex;align-items:center;padding:0 14px;border-bottom:1px solid rgba(255,255,255,.08);border-radius:0}
  .main-nav a::after{display:none}
  .main-nav a.is-active{border-radius:8px}
  .nav-wrap{position:relative;height:60px}
  .kpi-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .cta-inner{grid-template-columns:1fr}
  .cta-form{justify-content:flex-start}
  .form-hint{text-align:left}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:56px 0}
}
@media (max-width:767px){
  body{font-size:16px}
  .page-hero h1{font-size:30px}
  .page-hero{min-height:240px}
  .page-hero .container{padding-top:40px;padding-bottom:40px}
  .section-head h2,.cta-inner h2{font-size:24px}
  .feature{grid-template-columns:1fr;gap:20px;padding:16px}
  .feature .media{grid-column:1;grid-row:1;aspect-ratio:16/9}
  .feature .body{grid-column:1;grid-row:2}
  .feature.flip .media{grid-column:1;grid-row:1}
  .feature.flip .body{grid-column:1;grid-row:2}
  .steps,.notes{grid-template-columns:1fr}
  .kpi strong{font-size:28px}
}
@media (max-width:559px){
  .container{padding:0 20px}
  .page-hero h1{font-size:26px}
  .brand-text{font-size:14px}
  .brand-text small{display:none}
  .nav-cta{display:none}
  .kpi-grid{grid-template-columns:1fr}
  .cta-form input{min-width:0;flex:1 1 100%}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .step{grid-template-columns:44px 1fr;padding:20px}
}