/* roulang page: index */
:root{
  --primary:#1B57D6;
  --primary-deep:#0F3A96;
  --primary-soft:#EDF2FE;
  --accent:#F4831F;
  --accent-deep:#DE6F0D;
  --accent-soft:#FFF4E8;
  --text-strong:#0D1B2E;
  --text-muted:#4A5A72;
  --text-faint:#8494A8;
  --line:#E5EBF3;
  --line-soft:#EFF3F8;
  --bg-page:#F7F9FC;
  --radius-card:16px;
  --radius-block:20px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(13,27,46,.04), 0 8px 24px -12px rgba(13,27,46,.10);
  --shadow-hover:0 12px 32px -12px rgba(27,87,214,.18);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg-page);
  color:var(--text-strong);
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease-out;}
button{font-family:inherit;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:640px){.container{padding:0 32px;}}
@media (min-width:1024px){.container{padding:0 40px;}}

.h1{font-size:28px;line-height:36px;font-weight:700;letter-spacing:-.02em;color:var(--text-strong);}
.h2{font-size:22px;line-height:30px;font-weight:700;letter-spacing:-.01em;color:var(--text-strong);}
.h3{font-size:18px;line-height:28px;font-weight:600;color:var(--text-strong);}
@media (min-width:1024px){
  .h1{font-size:40px;line-height:48px;}
  .h2{font-size:30px;line-height:38px;}
  .h3{font-size:19px;line-height:28px;}
}
.lead{font-size:16px;line-height:1.75;color:var(--text-muted);max-width:720px;}
.body-text{font-size:15px;line-height:1.75;color:var(--text-muted);}
@media (min-width:1024px){.body-text{font-size:16px;line-height:1.75;}}
.meta-text{font-size:13px;line-height:20px;color:var(--text-faint);}

.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:92px 0;}}
.section-tight{padding:48px 0;}
@media (min-width:1024px){.section-tight{padding:72px 0;}}

.clamp-1{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:40;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(2px);
  -webkit-backdrop-filter:blur(2px);
  border-bottom:1px solid var(--line);
}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;
  background:var(--primary);
  position:relative;flex:none;
  box-shadow:inset 0 0 0 3px rgba(255,255,255,.26);
}
.brand-mark::after{
  content:"";position:absolute;inset:9px 9px auto 9px;height:3px;border-radius:2px;background:#fff;
  box-shadow:0 6px 0 #fff;
}
.brand-text{font-size:17px;font-weight:700;color:var(--text-strong);letter-spacing:-.01em;}
@media (min-width:1024px){.brand-text{font-size:18px;}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:72px;
  font-size:15px;font-weight:500;color:var(--text-muted);
  transition:color .15s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:20px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;
  transition:transform .15s ease-out;
}
.nav-link:hover{color:var(--text-strong);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text-strong);}
.nav-link.active::after{transform:scaleX(1);}
.mobile-link{
  display:flex;align-items:center;height:48px;font-size:16px;font-weight:500;
  color:var(--text-muted);border-bottom:1px solid var(--line-soft);
}
.mobile-link:last-of-type{border-bottom:none;}
.mobile-link.active{color:var(--primary);font-weight:600;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-strong);transition:background .15s ease-out,border-color .15s ease-out;
}
.icon-btn:hover{background:var(--primary-soft);border-color:#CBD9F5;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  cursor:pointer;white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px);box-shadow:var(--shadow-btn);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-primary:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-ghost{background:#fff;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:var(--primary-soft);}
.btn-ghost:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:var(--radius-btn);}
.btn-xs{height:36px;padding:0 14px;font-size:13px;border-radius:9px;}
.btn-full{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);
}
.btn-text .arrow{transition:transform .2s ease-out;}
.btn-text:hover{color:var(--primary-deep);text-decoration:underline;text-underline-offset:3px;}
.btn-text:hover .arrow{transform:translateX(2px);}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:500;line-height:1;
}
.badge-primary{background:var(--primary-soft);color:var(--primary);}
.badge-accent{background:var(--accent-soft);color:#B85C05;}
.badge-plain{background:#fff;border:1px solid var(--line);color:var(--text-muted);height:28px;padding:0 14px;}

/* 卡片 */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.card-hover:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6E1F7;}
.card-pad{padding:22px;}
@media (min-width:1024px){.card-pad{padding:24px;}}

/* Hero */
.hero{
  position:relative;overflow:hidden;background:#fff;
  padding:48px 0 56px;
}
@media (min-width:1024px){.hero{padding:96px 0 104px;}}
.hero::before{
  content:"";position:absolute;left:0;right:0;top:0;height:320px;
  background:linear-gradient(180deg,#EDF2FE 0%,rgba(237,242,254,0) 100%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;gap:40px;align-items:center;}
@media (min-width:768px){.hero-grid{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:44px;}}
@media (min-width:1024px){.hero-grid{gap:56px;}}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;}
.hero-visual{position:relative;}
.hero-plate{
  position:absolute;left:14px;right:-14px;top:24px;bottom:-16px;
  border-radius:var(--radius-block);background:var(--primary-soft);
}
.hero-img{
  position:relative;width:100%;height:auto;border-radius:var(--radius-block);
  object-fit:cover;aspect-ratio:16/10;box-shadow:var(--shadow-card);
}
.hero-stat{
  position:relative;margin-top:-36px;margin-left:16px;width:min(260px,88%);
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;
  box-shadow:0 10px 26px -16px rgba(13,27,46,.35);
}
.hero-stat-num{font-size:24px;line-height:32px;font-weight:700;color:var(--primary);}

/* 步骤 */
.step-card{position:relative;overflow:hidden;}
.step-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--primary);
}
.step-num{font-size:30px;line-height:1;font-weight:700;color:var(--primary-deep);letter-spacing:-.02em;}
.step-node{
  width:12px;height:12px;border-radius:999px;background:var(--primary);
  box-shadow:0 0 0 4px var(--primary-soft);flex:none;
}
.step-line{flex:1;border-top:1px dashed #C7D6F3;}

/* 数据条带 */
.stat-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-block);
  box-shadow:var(--shadow-card);
}
.stat-cell{padding:22px 20px;border-top:1px solid var(--line-soft);}
.stat-cell:first-child{border-top:none;}
@media (min-width:768px){
  .stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));}
  .stat-cell{border-top:none;border-left:1px solid var(--line-soft);}
  .stat-cell:first-child{border-left:none;}
}
.stat-num{font-size:26px;line-height:34px;font-weight:700;color:var(--primary);letter-spacing:-.02em;}
.stat-label{font-size:13px;line-height:20px;color:var(--text-faint);margin-top:4px;}

/* FAQ */
.faq-item{border-bottom:1px solid var(--line-soft);}
.faq-item:first-child{border-top:1px solid var(--line-soft);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:16px;
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  font-size:15px;font-weight:600;color:var(--text-strong);
  transition:background .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--bg-page);}
.faq-item summary:focus-visible{outline:2px solid var(--primary);outline-offset:-2px;}
.faq-icon{flex:none;color:var(--primary);transition:transform .2s ease-out;margin-top:4px;}
.faq-item[open] .faq-icon{transform:rotate(180deg);}
.faq-answer{padding:0 16px 16px;font-size:14px;line-height:1.7;color:var(--text-muted);}
.contact-card{
  background:var(--primary-soft);border-radius:var(--radius-card);padding:22px;
  border:1px solid #DCE6FA;
}

/* 资讯列表 */
.post-card{display:flex;flex-direction:column;height:100%;overflow:hidden;}
.post-cover{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px 12px 0 0;}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-title{font-size:18px;line-height:28px;font-weight:600;color:var(--text-strong);transition:color .2s ease-out;}
.post-card:hover .post-title{color:var(--primary);}
.empty-box{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:48px 24px;text-align:center;box-shadow:var(--shadow-card);
}

/* CTA */
.cta-band{
  background:var(--primary-soft);border-radius:var(--radius-block);
  padding:32px 24px;
}
@media (min-width:1024px){.cta-band{padding:56px;border-radius:24px;}}
.cta-inner{display:flex;flex-direction:column;gap:24px;}
@media (min-width:768px){
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px;}
}
.cta-actions{display:flex;flex-direction:column;gap:12px;}
@media (min-width:640px){.cta-actions{flex-direction:row;}}

/* 页脚 */
.site-footer{background:#0E1B2E;color:#C8D3E2;}
.site-footer a{color:#C8D3E2;}
.site-footer a:hover{color:var(--accent);}
.footer-title{color:#fff;font-size:14px;font-weight:600;letter-spacing:.02em;margin-bottom:14px;}
.footer-link{display:block;font-size:14px;line-height:1.5;padding:6px 0;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);}
.footer-brand-mark{
  width:30px;height:30px;border-radius:9px;background:#fff;position:relative;flex:none;
}
.footer-brand-mark::after{
  content:"";position:absolute;inset:9px 9px auto 9px;height:3px;border-radius:2px;background:var(--primary);
  box-shadow:0 6px 0 var(--primary);
}
.footer-brand-text{font-size:17px;font-weight:700;color:#fff;}

/* 表单 */
.field-label{display:block;font-size:14px;font-weight:600;color:var(--text-strong);margin-bottom:8px;}
.field-input,.field-select{
  width:100%;height:48px;border-radius:10px;border:1px solid #D8E0EC;background:#fff;
  padding:0 14px;font-size:15px;color:var(--text-strong);transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field-input::placeholder{color:var(--text-faint);}
.field-input:focus,.field-select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(27,87,214,.14);
}
.field-hint{font-size:13px;line-height:20px;color:var(--text-faint);margin-top:6px;}

/* 可访问性 */
:focus-visible{outline-color:var(--primary);}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0;
}
@media (max-width:639px){
  .mobile-cta-full{width:100%;}
}

/* roulang page: article */
:root{
    --primary:#1B57D6;
    --primary-deep:#0F3A96;
    --primary-soft:#EDF2FE;
    --accent:#F4831F;
    --accent-deep:#DE6F0D;
    --accent-soft:#FFF4E8;
    --text-strong:#0D1B2E;
    --text-muted:#4A5A72;
    --text-faint:#8494A8;
    --line:#E5EBF3;
    --line-soft:#EFF3F8;
    --bg-page:#F7F9FC;
    --success:#16A97E;
    --danger:#D84343;
    --radius-lg:24px;
    --radius-md:16px;
    --radius-sm:10px;
    --shadow-card:0 1px 2px rgba(13,27,46,.04), 0 8px 24px -12px rgba(13,27,46,.10);
    --shadow-hover:0 12px 32px -12px rgba(27,87,214,.18);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--text-strong);
    background:var(--bg-page);
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
  button,input,textarea,select{font:inherit;color:inherit;}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
  .num{font-variant-numeric:tabular-nums;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){ .container{padding-left:32px;padding-right:32px;} }
  @media (min-width:1024px){ .container{padding-left:40px;padding-right:40px;} }

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.95);
    -webkit-backdrop-filter:blur(6px);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  .brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand-mark{
    width:26px;height:26px;border-radius:8px;background:var(--primary);
    position:relative;flex:0 0 auto;
  }
  .brand-mark::after{
    content:"";position:absolute;inset:8px;border-radius:3px;background:#fff;opacity:.92;
  }
  .brand-text{font-size:17px;font-weight:700;color:var(--text-strong);letter-spacing:-.01em;}
  @media (min-width:1024px){ .brand-text{font-size:18px;} }
  .nav-link{
    position:relative;
    display:inline-block;
    padding:6px 2px;
    font-size:15px;
    font-weight:500;
    color:var(--text-muted);
    transition:color .15s ease;
  }
  .nav-link::after{
    content:"";
    position:absolute;left:0;right:0;bottom:-4px;height:2px;
    border-radius:2px;background:var(--primary);
    transform:scaleX(0);transform-origin:center;
    transition:transform .15s ease;
  }
  .nav-link:hover{color:var(--text-strong);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--text-strong);}
  .nav-link.active::after{transform:scaleX(1);}
  .icon-btn{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:10px;
    border:1px solid var(--line);background:#fff;color:var(--text-muted);
    cursor:pointer;transition:color .2s ease,border-color .2s ease;
  }
  .icon-btn:hover{color:var(--primary);border-color:var(--primary);}
  .mobile-link{
    display:block;padding:15px 2px;font-size:16px;font-weight:500;
    color:var(--text-muted);border-bottom:1px solid var(--line-soft);
  }
  .mobile-link:last-of-type{border-bottom:0;}
  .mobile-link:hover,.mobile-link.active{color:var(--primary);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:10px;
    font-size:15px;font-weight:600;line-height:1;
    border:1px solid transparent;cursor:pointer;
    transition:background-color .2s ease-out,color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px -10px rgba(244,131,31,.9);}
  .btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px -12px rgba(244,131,31,.95);}
  .btn-primary:active{transform:translateY(0);}
  .btn-outline{background:#fff;border-color:var(--primary);color:var(--primary);}
  .btn-outline:hover{background:var(--primary-soft);color:var(--primary-deep);border-color:var(--primary-deep);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .btn-xs{height:36px;padding:0 14px;font-size:14px;}
  .btn-full{width:100%;}
  .btn-link{
    display:inline-flex;align-items:center;gap:6px;
    padding:0;border:0;background:none;
    color:var(--primary);font-size:15px;font-weight:600;cursor:pointer;
  }
  .btn-link:hover{color:var(--primary-deep);text-decoration:underline;text-underline-offset:4px;}
  .btn-link svg{transition:transform .2s ease;}
  .btn-link:hover svg{transform:translateX(2px);}

  /* ---------- 通用文本与徽章 ---------- */
  .body-text{font-size:14px;line-height:1.7;}
  .meta-text{font-size:13px;line-height:1.6;color:var(--text-faint);font-variant-numeric:tabular-nums;}
  .badge{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;
    border-radius:999px;font-size:13px;font-weight:500;line-height:1;
  }
  .badge-primary{background:var(--primary-soft);color:var(--primary);}
  .badge-accent{background:var(--accent-soft);color:#B85C05;}

  /* ---------- 文章主体 ---------- */
  .page-shell{padding:28px 0 88px;}
  .article-shell{
    max-width:880px;margin:0 auto;background:#fff;
    border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:28px 20px 40px;
    box-shadow:var(--shadow-card);
  }
  @media (min-width:768px){ .article-shell{padding:40px 48px 52px;} }

  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    list-style:none;margin:0 0 20px;padding:0;
    font-size:14px;color:var(--text-faint);
  }
  .breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0;}
  .breadcrumb a{color:var(--text-faint);}
  .breadcrumb a:hover{color:var(--primary);}
  .breadcrumb .sep{color:#C3CEDD;}
  .breadcrumb .current{
    color:var(--text-muted);
    max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  }
  @media (max-width:520px){
    .breadcrumb .current{max-width:180px;}
  }

  .article-title{
    font-size:26px;line-height:1.36;font-weight:700;
    letter-spacing:-.02em;margin:0;color:var(--text-strong);
  }
  @media (min-width:768px){ .article-title{font-size:34px;} }
  .article-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    margin-top:18px;font-size:13px;color:var(--text-faint);
    font-variant-numeric:tabular-nums;
  }
  .article-meta .dot{color:#C3CEDD;}

  .article-cover{
    margin:28px 0 8px;border-radius:var(--radius-md);
    overflow:hidden;border:1px solid var(--line);
  }
  .article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
  .cover-caption{
    margin:10px 0 0;text-align:center;font-size:13px;color:var(--text-faint);
  }

  /* 正文排版 */
  .article-body{
    margin-top:28px;font-size:16px;line-height:1.8;color:#243348;
    overflow-wrap:break-word;word-break:break-word;
  }
  @media (max-width:520px){ .article-body{font-size:15px;line-height:1.75;} }
  .article-body > *:first-child{margin-top:0;}
  .article-body p{margin:0 0 1.1em;}
  .article-body > p:first-of-type{font-size:17px;color:#1C2B41;}
  .article-body h2{
    font-size:24px;line-height:1.4;font-weight:700;color:var(--text-strong);
    margin:40px 0 16px;
  }
  .article-body h3{
    font-size:19px;line-height:1.5;font-weight:600;color:var(--text-strong);
    margin:28px 0 12px;
  }
  .article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--text-strong);}
  .article-body ul{margin:0 0 1.1em;padding-left:0;list-style:none;}
  .article-body ul li{position:relative;padding-left:20px;margin:8px 0;}
  .article-body ul li::before{
    content:"";position:absolute;left:5px;top:.72em;
    width:6px;height:6px;border-radius:50%;background:var(--primary);
  }
  .article-body ol{margin:0 0 1.1em;padding-left:1.5em;}
  .article-body ol li{margin:8px 0;font-variant-numeric:tabular-nums;}
  .article-body blockquote{
    margin:24px 0;padding:16px 20px;background:var(--primary-soft);
    border-left:3px solid var(--primary);border-radius:0 10px 10px 0;
    color:var(--text-muted);
  }
  .article-body blockquote p:last-child{margin-bottom:0;}
  .article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
  .article-body a:hover{color:var(--primary-deep);}
  .article-body img{border-radius:12px;margin:20px auto;}
  .article-body .table-wrap{overflow-x:auto;margin:24px 0;-webkit-overflow-scrolling:touch;}
  .article-body table{
    width:100%;border-collapse:collapse;font-size:15px;min-width:520px;
    border:1px solid var(--line-soft);
  }
  .article-body th{
    background:var(--primary-soft);color:var(--primary-deep);
    font-weight:600;text-align:left;
  }
  .article-body th,.article-body td{padding:12px 14px;border:1px solid var(--line-soft);}
  .article-body tbody tr:nth-child(even){background:#FAFBFD;}
  .article-body hr{border:0;border-top:1px solid var(--line-soft);margin:32px 0;}
  .article-body code{
    background:var(--primary-soft);color:var(--primary-deep);
    padding:2px 6px;border-radius:6px;font-size:14px;
  }

  .article-actions{
    display:flex;flex-direction:column;gap:12px;
    margin-top:40px;padding-top:28px;border-top:1px solid var(--line-soft);
  }
  @media (min-width:640px){
    .article-actions{flex-direction:row;align-items:center;justify-content:space-between;}
  }

  .empty-state{
    margin-top:28px;padding:32px 20px;text-align:center;
    background:var(--bg-page);border:1px dashed var(--line);
    border-radius:var(--radius-md);
  }
  .empty-state p{margin:0 0 16px;color:var(--text-muted);font-size:15px;}

  /* ---------- 相关推荐 ---------- */
  .related-wrap{max-width:880px;margin:56px auto 0;}
  .section-title{
    font-size:22px;font-weight:700;color:var(--text-strong);
    letter-spacing:-.01em;margin:0;
  }
  @media (min-width:768px){ .section-title{font-size:26px;} }
  .related-empty{
    margin-top:20px;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-md);padding:20px;
    display:flex;flex-direction:column;gap:16px;
    box-shadow:var(--shadow-card);
  }
  @media (min-width:768px){
    .related-empty{flex-direction:row;align-items:center;justify-content:space-between;}
  }
  .related-icon{
    display:inline-flex;align-items:center;justify-content:center;
    width:42px;height:42px;border-radius:12px;background:var(--primary-soft);
    color:var(--primary);flex:0 0 auto;
  }

  /* ---------- CTA ---------- */
  .cta-band{
    margin-top:64px;background:var(--primary-soft);
    border-radius:var(--radius-lg);padding:32px 24px;
  }
  @media (min-width:768px){ .cta-band{padding:48px 56px;} }
  .cta-inner{display:flex;flex-direction:column;gap:24px;}
  @media (min-width:768px){
    .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px;}
  }
  .cta-title{font-size:22px;font-weight:700;color:var(--text-strong);margin:0;letter-spacing:-.01em;}
  @media (min-width:768px){ .cta-title{font-size:26px;} }
  .cta-sub{margin:10px 0 0;font-size:15px;color:var(--text-muted);}
  .cta-actions{display:flex;flex-direction:column;gap:12px;}
  @media (min-width:640px){ .cta-actions{flex-direction:row;} }

  /* ---------- 页脚 ---------- */
  .site-footer{background:#0E1B2E;color:#C8D3E2;margin-top:0;}
  .footer-brand-mark{
    width:24px;height:24px;border-radius:7px;background:var(--primary);
    position:relative;flex:0 0 auto;
  }
  .footer-brand-mark::after{content:"";position:absolute;inset:7px;border-radius:2px;background:#fff;opacity:.92;}
  .footer-brand-text{font-size:17px;font-weight:700;color:#fff;}
  .footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
  .footer-link{display:block;font-size:14px;color:#C8D3E2;padding:6px 0;transition:color .18s ease;}
  .footer-link:hover{color:var(--accent);}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.10);}

/* roulang page: category1 */
:root{
  --primary:#1B57D6;
  --primary-deep:#0F3A96;
  --primary-soft:#EDF2FE;
  --accent:#F4831F;
  --accent-deep:#DE6F0D;
  --accent-soft:#FFF4E8;
  --text-strong:#0D1B2E;
  --text-muted:#4A5A72;
  --text-faint:#8494A8;
  --line:#E5EBF3;
  --line-soft:#EFF3F8;
  --bg-page:#F7F9FC;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --shadow-card:0 1px 2px rgba(13,27,46,.04), 0 8px 24px -12px rgba(13,27,46,.10);
  --shadow-hover:0 12px 32px -12px rgba(27,87,214,.18);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-page);
  color:var(--text-strong);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-deep)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1024px){.container{padding:0 40px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--primary);
  position:relative;flex:none;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:3px;background:#fff;opacity:.92;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text-strong);white-space:nowrap}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-muted);
  padding:6px 0;transition:color .15s ease;display:inline-block;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left center;
  transition:transform .15s ease;
}
.nav-link:hover{color:var(--text-strong)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--text-strong)}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--text-strong);cursor:pointer;transition:background .15s ease,border-color .15s ease;
}
.icon-btn:hover{background:var(--primary-soft);border-color:#D6E0F8}
.mobile-link{
  display:flex;align-items:center;height:48px;padding:0 4px;
  font-size:16px;font-weight:500;color:var(--text-muted);
  border-bottom:1px solid var(--line-soft);transition:color .15s ease,background .15s ease;
}
.mobile-link:hover{color:var(--text-strong);background:var(--bg-page)}
.mobile-link.active{color:var(--primary);font-weight:600}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px -10px rgba(244,131,31,.65)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-deep);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-xs{height:34px;padding:0 14px;font-size:13px;border-radius:9px}
.btn-full{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.text-link svg{transition:transform .2s ease}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}
.text-link:hover svg{transform:translateX(2px)}

/* ---------- layout ---------- */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:92px 0}}
.section-head{max-width:760px;margin-bottom:32px}
@media (min-width:1024px){.section-head{margin-bottom:40px}}
.section-title{font-size:22px;line-height:1.34;font-weight:700;letter-spacing:-.02em}
@media (min-width:1024px){.section-title{font-size:30px;line-height:1.28}}
.section-sub{margin-top:12px;font-size:15px;line-height:1.75;color:var(--text-muted)}
.body-text{font-size:15px;line-height:1.75;color:var(--text-muted)}
@media (min-width:640px){.body-text{font-size:16px}}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:13px;font-weight:600;line-height:1;
}
.badge-primary{background:var(--primary-soft);color:var(--primary)}
.badge-accent{background:var(--accent-soft);color:#B85C05}
.badge-plain{background:#fff;border:1px solid var(--line);color:var(--text-muted);font-weight:500}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-faint)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--text-faint)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--text-strong);font-weight:500}

/* ---------- page head ---------- */
.page-head{padding:36px 0 8px;background:#fff;border-bottom:1px solid var(--line-soft)}
@media (min-width:1024px){.page-head{padding:56px 0 40px}}
.page-head h1{
  margin-top:20px;font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.02em;
}
@media (min-width:1024px){.page-head h1{font-size:40px;line-height:1.2}}
.page-head .lead{margin-top:16px;font-size:16px;line-height:1.8;color:var(--text-muted);max-width:720px}
.head-badges{margin-top:24px;display:flex;flex-wrap:wrap;gap:10px}
.banner-wrap{margin-top:36px;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);background:var(--primary-soft)}
.banner-wrap img{width:100%;aspect-ratio:21/8;object-fit:cover}

/* ---------- cards ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:22px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D8E3F8}
.card-title{font-size:18px;line-height:1.5;font-weight:600;color:var(--text-strong)}
@media (min-width:1024px){.card-title{font-size:19px}}
.card-text{margin-top:10px;font-size:15px;line-height:1.75;color:var(--text-muted)}
.card-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px}
@media (min-width:640px){
  .card-row{display:flex;gap:18px;align-items:flex-start}
  .card-row .card-thumb{width:176px;flex:0 0 176px;height:118px;aspect-ratio:auto}
}

/* ---------- intro split ---------- */
.split{display:grid;gap:32px;align-items:center}
@media (min-width:1024px){
  .split{grid-template-columns:1fr 1fr;gap:56px}
  .split.media-left .split-media{order:-1}
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;border:1px solid var(--line)}
.check-list{margin-top:24px;display:grid;gap:12px}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;line-height:1.7;color:var(--text-muted);
}
.check-list .dot{
  flex:none;margin-top:9px;width:8px;height:8px;border-radius:999px;background:var(--primary);
}

/* ---------- number list ---------- */
.step-list{display:grid;gap:0;border-top:1px solid var(--line-soft)}
.step-item{
  display:flex;gap:20px;padding:24px 4px;border-bottom:1px solid var(--line-soft);
  transition:background .2s ease;
}
.step-item:hover{background:#fff}
.step-num{
  flex:none;font-size:26px;font-weight:700;line-height:1;letter-spacing:-.02em;
  color:var(--primary);font-variant-numeric:tabular-nums;padding-top:4px;min-width:52px;
}
@media (min-width:1024px){.step-num{font-size:30px}}
.step-item h3{font-size:18px;font-weight:600;line-height:1.5}
.step-item p{margin-top:8px;font-size:15px;line-height:1.75;color:var(--text-muted);max-width:680px}
.step-meta{margin-top:10px;font-size:13px;color:var(--text-faint);font-variant-numeric:tabular-nums}

/* ---------- faq ---------- */
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;box-shadow:var(--shadow-card);
}
.faq-item + .faq-item{margin-top:12px}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--text-strong);
  transition:background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--bg-page)}
.faq-item summary:focus-visible{outline:2px solid var(--primary);outline-offset:-2px}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:999px;background:var(--primary-soft);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  transition:transform .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--text-muted)}

/* ---------- cta ---------- */
.cta-band{
  background:var(--primary-soft);border-radius:var(--radius-lg);
  padding:32px 24px;
}
@media (min-width:1024px){.cta-band{padding:56px}}
.cta-band h2{font-size:22px;line-height:1.35;font-weight:700;letter-spacing:-.02em}
@media (min-width:1024px){.cta-band h2{font-size:30px}}
.cta-actions{display:flex;flex-direction:column;gap:12px;margin-top:24px}
@media (min-width:640px){.cta-actions{flex-direction:row;flex-wrap:wrap}}
@media (min-width:1024px){.cta-actions{margin-top:0}}

/* ---------- footer ---------- */
.site-footer{background:#0E1B2E;color:#C8D3E2}
.footer-brand-mark{width:26px;height:26px;border-radius:8px;background:var(--primary);position:relative;flex:none}
.footer-brand-mark::after{content:"";position:absolute;inset:7px;border-radius:3px;background:#fff;opacity:.92}
.footer-brand-text{font-size:17px;font-weight:700;color:#fff;letter-spacing:-.01em}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-link{
  display:block;padding:6px 0;font-size:14px;color:#C8D3E2;
  transition:color .2s ease,transform .2s ease;
}
.footer-link:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10)}
.meta-text{font-size:13px;line-height:1.7;color:var(--text-faint)}

/* roulang page: category2 */
:root{
  --primary:#1B57D6; --primary-deep:#0F3A96; --primary-soft:#EDF2FE;
  --accent:#F4831F; --accent-deep:#DE6F0D; --accent-soft:#FFF4E8; --accent-text:#B85C05;
  --text-strong:#0D1B2E; --text-muted:#4A5A72; --text-faint:#8494A8;
  --line:#E5EBF3; --line-soft:#EFF3F8;
  --bg-page:#F7F9FC; --white:#FFFFFF;
  --radius-lg:24px; --radius:16px; --radius-sm:12px; --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(13,27,46,.04), 0 8px 24px -12px rgba(13,27,46,.10);
  --shadow-hover:0 12px 32px -12px rgba(27,87,214,.18);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.75;
  color:var(--text-strong);background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary-deep)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
button{font-family:inherit}
::selection{background:var(--primary-soft);color:var(--primary-deep)}

/* 容器 */
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px}}
@media (min-width:1024px){.container{padding-left:40px;padding-right:40px}}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:26px;height:26px;border-radius:8px;background:var(--primary);
  display:inline-block;position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;left:8px;top:8px;width:10px;height:10px;
  border-radius:2px;background:#FFFFFF;
}
.brand-text{font-size:17px;font-weight:700;color:var(--text-strong);letter-spacing:-.01em}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:72px;
  font-size:15px;font-weight:500;color:var(--text-muted);
  transition:color .15s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;
  transition:transform .15s ease;
}
.nav-link:hover{color:var(--text-strong)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--text-strong);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.site-header .brand:hover .brand-text{color:var(--primary)}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;background:#fff;
  border:1px solid var(--line);border-radius:10px;color:var(--text-strong);
  cursor:pointer;transition:background .18s ease,border-color .18s ease;
}
.icon-btn:hover{background:var(--primary-soft);border-color:#CFDDF9}
.mobile-link{
  display:block;line-height:48px;font-size:16px;color:var(--text-muted);
  border-bottom:1px solid var(--line-soft);
}
.mobile-link:hover{color:var(--primary);background:#FAFBFD}
.mobile-link.active{color:var(--primary);font-weight:600}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease-out,color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#FFFFFF}
.btn-primary:hover{background:var(--accent-deep);color:#FFFFFF;transform:translateY(-1px);box-shadow:0 10px 22px -12px rgba(222,111,13,.55)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-primary:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-secondary{background:#FFFFFF;color:var(--primary);border-color:var(--primary)}
.btn-secondary:hover{background:var(--primary-soft);color:var(--primary-deep)}
.btn-secondary:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-xs{height:36px;padding:0 14px;font-size:13px;border-radius:9px}
.btn-full{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--primary);background:none;border:0;padding:0;cursor:pointer;
}
.btn-text:hover{color:var(--primary-deep);text-decoration:underline;text-underline-offset:3px}
.btn-text svg{transition:transform .18s ease}
.btn-text:hover svg{transform:translateX(2px)}

/* 通用文本 */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:88px 0}}
.section-tight{padding:48px 0}
@media (min-width:1024px){.section-tight{padding:64px 0}}
.bg-white{background:#FFFFFF}
.border-y-line{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin:0 auto 36px;text-align:center}
@media (min-width:1024px){.section-head{margin-bottom:44px}}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--primary);
  background:var(--primary-soft);border-radius:999px;padding:4px 12px;margin-bottom:14px;
  letter-spacing:.02em;
}
.section-title{font-size:22px;line-height:1.36;font-weight:700;letter-spacing:-.01em;color:var(--text-strong)}
@media (min-width:768px){.section-title{font-size:26px}}
@media (min-width:1024px){.section-title{font-size:30px;line-height:1.27}}
.section-sub{margin-top:12px;font-size:15px;line-height:1.75;color:var(--text-muted)}
@media (min-width:1024px){.section-sub{font-size:16px}}
.lead{font-size:16px;color:var(--text-muted);max-width:680px}
.meta-text{font-size:13px;line-height:1.6;color:var(--text-faint)}
.num{font-variant-numeric:tabular-nums}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;height:25px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-primary{background:var(--primary-soft);color:var(--primary)}
.badge-accent{background:var(--accent-soft);color:var(--accent-text)}

/* 页头 */
.page-head{background:#FFFFFF;border-bottom:1px solid var(--line);padding:32px 0 48px}
@media (min-width:1024px){.page-head{padding:40px 0 64px}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-faint);margin-bottom:24px}
.breadcrumb a{color:var(--text-faint)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb li[aria-current]{color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60vw}
.head-inner{max-width:820px;margin:0 auto;text-align:center}
.page-title{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.02em;margin-top:14px;color:var(--text-strong)}
@media (min-width:768px){.page-title{font-size:34px}}
@media (min-width:1024px){.page-title{font-size:40px;line-height:1.2}}
.page-sub{margin-top:16px;font-size:16px;line-height:1.75;color:var(--text-muted)}
.head-actions{display:flex;flex-direction:column;gap:12px;margin-top:28px}
@media (min-width:640px){.head-actions{flex-direction:row;justify-content:center}}
.metrics{
  display:grid;grid-template-columns:1fr;gap:16px;margin-top:36px;
}
@media (min-width:640px){.metrics{grid-template-columns:repeat(3,1fr);gap:20px}}
.metric{
  background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;text-align:center;box-shadow:var(--shadow-card);
}
.metric-value{font-size:24px;font-weight:700;color:var(--primary);letter-spacing:-.01em}
.metric-label{margin-top:6px;font-size:14px;color:var(--text-muted)}

/* 编号清单 */
.step-list{max-width:880px;margin:0 auto;border-top:1px solid var(--line)}
.step-item{
  display:flex;gap:18px;padding:22px 10px;border-bottom:1px solid var(--line-soft);
  transition:background .18s ease;
}
.step-item:hover{background:#F7F9FC}
.step-no{
  flex:0 0 auto;min-width:38px;font-size:19px;font-weight:700;color:var(--primary);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1.7;
}
.step-title{font-size:17px;font-weight:600;color:var(--text-strong);line-height:1.6}
.step-desc{margin-top:6px;font-size:15px;line-height:1.75;color:var(--text-muted)}
.step-tag{margin-top:10px}

/* 对比表格 */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--radius);background:#FFFFFF;
  overflow-x:auto;box-shadow:var(--shadow-card);
}
table.compare{width:100%;min-width:720px;border-collapse:collapse}
table.compare thead th{
  background:var(--primary-soft);color:var(--text-strong);font-size:14px;font-weight:600;
  text-align:left;padding:16px 20px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.compare tbody td{
  padding:16px 20px;font-size:15px;line-height:1.7;color:var(--text-muted);
  border-bottom:1px solid var(--line-soft);vertical-align:top;
}
table.compare tbody tr:nth-child(even){background:#FAFBFD}
table.compare tbody tr:hover{background:#F7F9FC}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare td .cell-strong{color:var(--text-strong);font-weight:600}
.table-note{margin-top:14px;font-size:13px;color:var(--text-faint)}

/* 图文核对块 */
.check-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:start}
@media (min-width:1024px){.check-grid{grid-template-columns:7fr 5fr;gap:48px;align-items:center}}
.check-list{border-top:1px solid var(--line)}
.check-list li{
  display:flex;gap:12px;padding:16px 0;border-bottom:1px solid var(--line-soft);
  font-size:15px;line-height:1.75;color:var(--text-muted);
}
.check-list li strong{color:var(--text-strong);font-weight:600}
.dot{
  flex:0 0 auto;width:8px;height:8px;border-radius:999px;background:var(--primary);
  margin-top:12px;
}
.figure-card{
  background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;box-shadow:var(--shadow-card);
}
.figure-card img{border-radius:var(--radius-sm);width:100%;aspect-ratio:16/9;object-fit:cover}
.figure-cap{margin-top:12px;font-size:13px;line-height:1.6;color:var(--text-faint);text-align:center}

/* FAQ */
.faq-list{max-width:880px;margin:0 auto}
.faq-item{
  background:#FFFFFF;border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{box-shadow:var(--shadow-card);border-color:#D8E2F4}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:16px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--text-strong);line-height:1.65;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#F7F9FC}
.faq-icon{flex:0 0 auto;color:var(--primary);transition:transform .2s ease-out;margin-top:4px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.78;color:var(--text-muted)}

/* CTA */
.cta-band{
  background:var(--primary-soft);border-radius:var(--radius-lg);padding:32px;
}
@media (min-width:768px){.cta-band{padding:48px}}
@media (min-width:1024px){.cta-band{padding:56px}}
.cta-inner{display:flex;flex-direction:column;gap:24px}
@media (min-width:1024px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px}}
.cta-title{font-size:22px;font-weight:700;line-height:1.35;color:var(--text-strong);letter-spacing:-.01em}
@media (min-width:1024px){.cta-title{font-size:26px}}
.cta-sub{margin-top:10px;font-size:15px;color:var(--text-muted)}
.cta-actions{display:flex;flex-direction:column;gap:12px}
@media (min-width:640px){.cta-actions{flex-direction:row}}
.cta-actions .btn{width:100%}
@media (min-width:640px){.cta-actions .btn{width:auto}}

/* 页脚 */
.site-footer{background:#0E1B2E;color:#C8D3E2}
.footer-brand-mark{
  width:24px;height:24px;border-radius:7px;background:var(--primary);display:inline-block;position:relative;flex:0 0 auto;
}
.footer-brand-mark::after{
  content:"";position:absolute;left:7px;top:7px;width:10px;height:10px;border-radius:2px;background:#FFFFFF;
}
.footer-brand-text{font-size:17px;font-weight:700;color:#FFFFFF;letter-spacing:-.01em}
.footer-title{font-size:15px;font-weight:700;color:#FFFFFF;margin-bottom:14px}
.footer-link{display:block;font-size:14px;line-height:1.7;color:#C8D3E2;padding:6px 0;transition:color .18s ease}
.footer-link:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10)}
.body-text{font-size:14px;line-height:1.75}

/* 焦点可访问性 */
a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;
}