/* roulang page: index */
:root{
    --primary:#0B6E7F;
    --primary-dark:#075763;
    --primary-light:#E8F3F5;
    --accent:#E07A3F;
    --accent-dark:#C9672F;
    --ink:#14212B;
    --sub:#56646F;
    --faint:#8A96A0;
    --line:#E3E9EC;
    --page:#F7F9FA;
    --card:#FFFFFF;
    --deep:#0E2A30;
    --radius-card:14px;
    --radius-btn:10px;
    --radius-img:12px;
    --shadow-card:0 1px 2px rgba(11,110,127,.06), 0 14px 30px -18px rgba(11,110,127,.22);
    --shadow-card-hover:0 2px 4px rgba(11,110,127,.10), 0 22px 40px -20px rgba(11,110,127,.34);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--ink);
    background:var(--page);
    letter-spacing:0.01em;
  }
  a{color:inherit;text-decoration:none;}
  img{display:block;max-width:100%;height:auto;}
  button,input,textarea,select{font:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

  /* ============ 布局骨架：左侧竖向导航 + 右侧内容 ============ */
  .side-nav{
    display:none;
  }
  .main-wrap{
    margin-left:0;
    min-width:0;
  }
  @media (min-width:1024px){
    .side-nav{
      display:flex;
      flex-direction:column;
      position:fixed;
      top:0;
      left:0;
      width:248px;
      height:100vh;
      background:#fff;
      border-right:1px solid var(--line);
      z-index:60;
    }
    .main-wrap{
      margin-left:248px;
    }
  }
  .container-x{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding:0 20px;
  }
  @media (min-width:768px){
    .container-x{padding:0 28px;}
  }
  @media (min-width:1280px){
    .container-x{padding:0 40px;}
  }
  .section{padding:48px 0;}
  @media (min-width:1024px){
    .section{padding:88px 0;}
  }

  /* ============ 品牌标记 ============ */
  .brand-mark{
    width:40px;height:40px;border-radius:12px;
    background:linear-gradient(140deg,#0B6E7F 0%,#0E8A9B 100%);
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-weight:700;font-size:15px;letter-spacing:0;
    box-shadow:0 6px 16px -8px rgba(11,110,127,.7);
    flex:0 0 auto;
  }
  .brand-mark.small{width:34px;height:34px;border-radius:10px;font-size:13px;}

  /* ============ 侧栏导航 ============ */
  .nav-item{
    position:relative;
    display:flex;
    align-items:center;
    min-height:44px;
    padding:8px 14px;
    border-radius:10px;
    font-size:14px;
    line-height:1.5;
    color:var(--sub);
    transition:background-color .2s ease,color .2s ease;
  }
  .nav-item::before{
    content:"";
    position:absolute;
    left:-14px;top:10px;bottom:10px;width:3px;
    border-radius:999px;
    background:transparent;
    transition:background-color .2s ease;
  }
  .nav-item:hover{background:var(--primary-light);color:var(--primary);}
  .nav-item:hover::before{background:var(--primary);}
  .nav-item.is-active{background:var(--primary-light);color:var(--primary);font-weight:600;}
  .nav-item.is-active::before{background:var(--primary);}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;
    border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    transition:transform .18s ease, background-color .18s ease, box-shadow .18s ease, color .18s ease, border-color .18s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 12px 24px -14px rgba(224,122,63,.9);}
  .btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-outline{background:#fff;color:var(--primary);border-color:var(--primary);}
  .btn-outline:hover{background:var(--primary-light);transform:translateY(-2px);}
  .btn-outline:active{transform:translateY(0);}
  .btn-ghost{background:transparent;color:var(--primary);border-color:transparent;padding:0 10px;height:auto;}
  .btn-ghost:hover{text-decoration:underline;text-underline-offset:4px;}
  .btn-sm{height:40px;padding:0 16px;font-size:14px;}
  .btn-block{width:100%;}
  .link-arrow{color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
  .link-arrow .arw{transition:transform .2s ease;}
  .link-arrow:hover .arw{transform:translateX(3px);}
  .link-arrow:hover{text-decoration:underline;text-underline-offset:4px;}

  /* ============ 徽章 / 标签 ============ */
  .badge{
    display:inline-flex;align-items:center;
    padding:3px 10px;border-radius:999px;
    background:var(--primary-light);color:var(--primary);
    font-size:11.5px;font-weight:600;letter-spacing:.02em;
    line-height:1.6;
  }
  .badge-soft{background:#F2F5F6;color:var(--sub);}
  .tag{
    display:inline-flex;align-items:center;
    padding:6px 14px;border-radius:999px;
    background:var(--primary-light);color:var(--primary);
    font-size:13px;font-weight:500;
  }

  /* ============ 卡片 ============ */
  .card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    transition:transform .2s ease, box-shadow .2s ease;
  }
  .card-hover:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);}
  .thumb{
    position:relative;
    overflow:hidden;
    border-radius:var(--radius-img);
    background:var(--primary-light);
  }
  .thumb img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .35s ease;
  }
  .card-hover:hover .thumb img{transform:scale(1.04);}
  .ratio-16-9{aspect-ratio:16/9;width:100%;}

  /* ============ Hero ============ */
  .hero{
    position:relative;
    background:
      radial-gradient(1100px 460px at 82% -12%, rgba(11,110,127,.10), transparent 62%),
      linear-gradient(180deg,#FFFFFF 0%,#F7F9FA 100%);
    border-bottom:1px solid var(--line);
  }
  .hero-title{
    font-size:clamp(30px,4.4vw,46px);
    line-height:1.2;
    font-weight:700;
    letter-spacing:.01em;
  }
  .hero-sub{
    font-size:16.5px;
    line-height:1.85;
    color:var(--sub);
    margin-top:18px;
    max-width:560px;
  }
  .check-item{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--sub);}
  .check-dot{
    flex:0 0 auto;width:20px;height:20px;border-radius:999px;
    background:var(--primary-light);color:var(--primary);
    display:flex;align-items:center;justify-content:center;
    font-size:12px;font-weight:700;margin-top:4px;
  }
  .float-card{
    position:absolute;left:-16px;bottom:20px;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    padding:14px 18px;display:flex;align-items:center;gap:12px;
    max-width:calc(100% - 20px);
  }
  @media (min-width:1024px){
    .float-card{left:-34px;bottom:28px;}
  }
  .float-ico{
    width:34px;height:34px;border-radius:999px;background:var(--primary-light);color:var(--primary);
    display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;flex:0 0 auto;
  }
  .trust-item{padding:14px 0;}
  .trust-num{font-size:20px;font-weight:700;color:var(--primary);line-height:1.3;}
  .trust-desc{font-size:13px;color:var(--faint);line-height:1.6;margin-top:2px;}
  @media (min-width:768px){
    .trust-item{padding:4px 18px;border-left:1px solid var(--line);}
    .trust-item:first-child{border-left:0;padding-left:0;}
  }

  /* ============ 编号行式列表 ============ */
  .num-row{
    display:flex;gap:20px;
    padding:26px 0;
    border-bottom:1px solid var(--line);
  }
  .num-box{
    flex:0 0 auto;
    width:56px;height:56px;border-radius:14px;
    background:var(--primary-light);color:var(--primary);
    display:flex;align-items:center;justify-content:center;
    font-size:20px;font-weight:700;letter-spacing:.02em;
  }
  .num-title{font-size:19px;font-weight:600;line-height:1.45;}
  .num-text{font-size:15px;color:var(--sub);margin-top:8px;line-height:1.85;}

  /* ============ 场景图文 ============ */
  .scene-offset{}
  @media (min-width:1024px){
    .scene-offset{margin-left:8%;}
  }

  /* ============ 认知墙 ============ */
  .logo-wall{
    display:grid;grid-template-columns:repeat(3,1fr);
    gap:12px;
  }
  @media (min-width:768px){
    .logo-wall{grid-template-columns:repeat(3,1fr);gap:16px;}
  }
  .logo-cell{
    height:76px;border:1px solid var(--line);border-radius:12px;background:#fff;
    display:flex;align-items:center;justify-content:center;
    font-size:13.5px;color:var(--faint);font-weight:600;letter-spacing:.04em;
    filter:grayscale(1);transition:filter .25s ease,color .25s ease,border-color .25s ease,transform .25s ease;
  }
  .logo-cell:hover{filter:grayscale(0);color:var(--primary);border-color:#BFDCE1;transform:translateY(-2px);}

  /* ============ FAQ ============ */
  .faq-wrap{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);overflow:hidden;
  }
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:last-child{border-bottom:0;}
  .faq-item summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 24px;
    font-size:17px;font-weight:600;line-height:1.5;
    transition:color .18s ease,background-color .18s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--primary);background:#FAFCFC;}
  .faq-sign{
    flex:0 0 auto;width:24px;height:24px;border-radius:999px;
    background:var(--primary-light);color:var(--primary);
    display:flex;align-items:center;justify-content:center;
    font-size:15px;font-weight:600;line-height:1;
    transition:transform .25s ease;
  }
  .faq-item[open] .faq-sign{transform:rotate(45deg);}
  .faq-body{padding:0 24px 22px 24px;font-size:15px;color:var(--sub);line-height:1.85;}
  .faq-body p + p{margin-top:.7em;}

  /* ============ 表单 ============ */
  .field-label{display:block;font-size:13px;font-weight:500;color:var(--sub);margin-bottom:6px;}
  .field-input,.field-textarea{
    width:100%;
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    padding:0 14px;height:46px;
    background:#fff;font-size:15px;color:var(--ink);
    transition:border-color .18s ease, box-shadow .18s ease;
  }
  .field-textarea{height:auto;padding:12px 14px;line-height:1.7;resize:vertical;min-height:112px;}
  .field-input::placeholder,.field-textarea::placeholder{color:#AEB8BF;}
  .field-input:focus,.field-textarea:focus{
    outline:none;border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(11,110,127,.15);
  }

  /* ============ CTA 区块 ============ */
  .cta-block{
    background:var(--primary-light);
    border:1px solid #CFE4E8;
    border-radius:18px;
    padding:36px 24px;
    text-align:center;
  }
  @media (min-width:1024px){
    .cta-block{padding:56px 48px;}
  }

  /* ============ 页脚 ============ */
  .site-footer{
    background:var(--deep);
    color:rgba(255,255,255,.78);
    padding-top:56px;
  }
  .footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
  .footer-link{
    display:block;font-size:14px;color:rgba(255,255,255,.72);
    padding:5px 0;transition:color .18s ease,transform .18s ease;
  }
  .footer-link:hover{color:#8FD3DE;transform:translateX(2px);}
  .footer-bottom{
    margin-top:44px;border-top:1px solid rgba(255,255,255,.12);
    padding:20px 0;font-size:13px;color:rgba(255,255,255,.6);
  }

  /* ============ 移动端导航 ============ */
  .mobile-top{
    position:sticky;top:0;z-index:50;
    background:#fff;border-bottom:1px solid var(--line);
    height:60px;display:flex;align-items:center;justify-content:space-between;
    padding:0 18px;
  }
  .burger{
    width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
    background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
    cursor:pointer;transition:background-color .18s ease,border-color .18s ease;
  }
  .burger:hover{background:var(--primary-light);border-color:#BFDCE1;}
  .burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--primary);}
  .drawer{
    position:fixed;inset:0;background:#fff;z-index:80;
    transform:translateY(-100%);
    transition:transform .2s ease;
    display:flex;flex-direction:column;
    padding:18px 18px 26px;
  }
  .drawer.is-open{transform:translateY(0);}
  .drawer-item{
    display:flex;align-items:center;justify-content:space-between;
    height:56px;border-bottom:1px solid var(--line);
    font-size:15.5px;color:var(--ink);transition:color .18s ease,padding-left .18s ease;
  }
  .drawer-item:hover{color:var(--primary);padding-left:4px;}
  .drawer-item.is-active{color:var(--primary);font-weight:600;}
  .overlay{
    position:fixed;inset:0;background:rgba(20,33,43,.45);
    z-index:70;opacity:0;pointer-events:none;transition:opacity .2s ease;
  }
  .overlay.is-open{opacity:1;pointer-events:auto;}

  /* ============ 移动底部固定条 ============ */
  .mobile-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:60;
    background:#fff;box-shadow:0 -8px 24px -14px rgba(20,33,43,.35);
    height:64px;display:flex;align-items:center;justify-content:space-between;
    gap:12px;padding:0 16px calc(0px + env(safe-area-inset-bottom,0));
  }
  @media (min-width:1024px){
    .mobile-bar{display:none;}
  }

  .divider-soft{height:1px;background:var(--line);}
  .eyebrow{font-size:13px;font-weight:600;color:var(--primary);letter-spacing:.06em;}
  .h2-title{font-size:clamp(24px,3vw,34px);line-height:1.28;font-weight:700;}
  .lead{font-size:15.5px;color:var(--sub);line-height:1.85;}
  .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;}

/* roulang page: article */
:root{
  --primary:#0B6E7F;
  --primary-dark:#075763;
  --primary-soft:#E8F3F5;
  --accent:#E07A3F;
  --accent-dark:#C9682F;
  --ink:#14212B;
  --ink-2:#56646F;
  --ink-3:#8A96A0;
  --line:#E3E9EC;
  --bg:#F7F9FA;
  --card:#FFFFFF;
  --footer:#0E2A30;
  --ok:#2E8B57;
  --warn:#C4453B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(11,110,127,.06), 0 14px 30px -18px rgba(11,110,127,.22);
  --shadow-card-hover:0 2px 4px rgba(11,110,127,.08), 0 22px 42px -20px rgba(11,110,127,.34);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
img{max-width:100%;display:block;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}

/* ---------- 布局骨架 ---------- */
.shell{min-height:100vh;display:flex;flex-direction:column;}
.content{flex:1 0 auto;padding-top:28px;}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;}

/* ---------- 左侧竖向导航 ---------- */
.side-nav{
  display:none;
  position:fixed;top:0;left:0;bottom:0;width:248px;
  background:#fff;border-right:1px solid var(--line);
  flex-direction:column;z-index:40;padding-top:22px;
}
.side-brand{padding:0 22px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:11px;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:linear-gradient(135deg,#0B6E7F,#0F92A6);
  color:#fff;font-weight:700;font-size:14px;letter-spacing:.02em;
  display:grid;place-items:center;
  box-shadow:0 8px 18px -10px rgba(11,110,127,.75);
}
.brand-mark.small{width:32px;height:32px;border-radius:9px;font-size:13px;}
.brand-text{font-size:15px;font-weight:700;color:var(--ink);line-height:1.3;}
.brand-sub{font-size:11.5px;color:var(--ink-3);letter-spacing:.04em;}
.nav-item{
  display:flex;align-items:center;height:44px;padding:0 22px;
  font-size:14.5px;color:var(--ink-2);
  border-left:3px solid transparent;
}
.nav-item:hover{background:var(--primary-soft);color:var(--primary);border-left-color:var(--primary);}
.nav-item.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600;border-left-color:var(--primary);}
.divider-soft{height:1px;background:var(--line);}
.text-faint{color:var(--ink-3);}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-sm{height:40px;font-size:13.5px;padding:0 16px;}
.btn-block{display:flex;width:100%;}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 14px 26px -14px rgba(224,122,63,.85);}
.btn-outline{border-color:var(--primary);color:var(--primary);background:#fff;}
.btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}

/* ---------- 移动端顶栏 ---------- */
.mobile-top{
  position:sticky;top:0;z-index:50;height:60px;
  background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;
}
.burger{width:42px;height:42px;display:grid;place-items:center;background:transparent;border:0;border-radius:10px;cursor:pointer;}
.burger span{display:block;width:18px;height:2px;background:var(--primary);border-radius:2px;margin:2.5px 0;}
.burger:hover{background:var(--primary-soft);}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:80;visibility:hidden;pointer-events:none;}
.drawer.is-open{visibility:visible;pointer-events:auto;}
.drawer-mask{position:absolute;inset:0;background:rgba(20,33,43,.45);opacity:0;transition:opacity .2s ease;}
.drawer.is-open .drawer-mask{opacity:1;}
.drawer-panel{
  position:absolute;top:0;left:0;right:0;background:#fff;
  border-radius:0 0 18px 18px;padding-bottom:20px;
  transform:translateY(-100%);transition:transform .22s ease;
  box-shadow:0 20px 40px -20px rgba(11,110,127,.4);
}
.drawer.is-open .drawer-panel{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line);}
.drawer-link{display:flex;align-items:center;height:56px;padding:0 20px;font-size:15px;color:var(--ink-2);border-bottom:1px solid var(--line);}
.drawer-link.is-active{color:var(--primary);font-weight:600;background:var(--primary-soft);}
.drawer-cta{padding:16px 20px 0;}
.close-x{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;cursor:pointer;color:var(--ink-2);}
.close-x:hover{background:var(--primary-soft);color:var(--primary);}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-3);padding:6px 0 22px;}
.crumb a{color:var(--primary);}
.crumb a:hover{text-decoration:underline;text-underline-offset:4px;}
.crumb .cur{max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头 ---------- */
.article-wrap{max-width:860px;}
.article-head{padding-bottom:26px;border-bottom:1px solid var(--line);}
.article-title{
  font-size:clamp(26px,3.4vw,38px);
  line-height:1.32;font-weight:700;letter-spacing:.01em;
  margin:16px 0 14px;color:var(--ink);
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:13px;color:var(--ink-3);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line);}

/* ---------- 正文 ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--ink);padding-top:32px;}
.article-body h2{
  font-size:clamp(21px,2.4vw,27px);line-height:1.38;font-weight:700;
  margin:38px 0 16px;padding-left:14px;position:relative;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:3px;background:var(--primary);}
.article-body h3{font-size:20px;line-height:1.45;font-weight:600;margin:28px 0 12px;color:var(--ink);}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--primary-dark);}
.article-body p{margin:0 0 .9em;}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(11,110,127,.35);}
.article-body a:hover{border-bottom-color:var(--primary);}
.article-body strong{font-weight:600;color:var(--primary-dark);}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.3em;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul>li{position:relative;padding-left:20px;margin-bottom:.5em;}
.article-body ul>li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--primary);}
.article-body ol>li{margin-bottom:.5em;padding-left:.2em;}
.article-body ol>li::marker{color:var(--primary);font-weight:600;}
.article-body blockquote{
  margin:26px 0;padding:16px 20px;
  border-left:3px solid var(--primary);background:var(--primary-soft);
  border-radius:0 10px 10px 0;color:var(--ink-2);font-size:16px;
}
.article-body img{border-radius:var(--radius-img);margin:24px auto;background:var(--primary-soft);}
.article-body figure{margin:26px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-3);margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top;}
.article-body th{background:var(--primary-soft);font-weight:600;color:var(--primary-dark);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}
.article-body code{background:var(--primary-soft);padding:2px 6px;border-radius:6px;font-size:14px;}

/* ---------- 文末 ---------- */
.article-foot{margin-top:40px;padding-top:26px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:12.5px;font-weight:500;}

/* ---------- 空态 ---------- */
.empty-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:64px 24px;text-align:center;max-width:860px;
}
.empty-icon{width:64px;height:64px;border-radius:50%;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;margin:0 auto 20px;font-size:26px;font-weight:700;}
.empty-card h2{font-size:22px;font-weight:700;margin-bottom:10px;}
.empty-card p{font-size:14.5px;color:var(--ink-2);margin-bottom:22px;}

/* ---------- 区块标题 ---------- */
.sec{padding:64px 0 0;}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px;}
.sec-head h2{font-size:clamp(21px,2.4vw,27px);font-weight:700;line-height:1.35;}
.sec-head p{font-size:14px;color:var(--ink-2);margin-top:6px;}
.link-more{color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{text-decoration:underline;text-underline-offset:4px;}
.link-more i{transition:transform .18s ease;font-style:normal;}
.link-more:hover i{transform:translateX(3px);}

/* ---------- 推荐卡片 ---------- */
.grid-3{display:grid;grid-template-columns:1fr;gap:22px;}
.rec-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);}
.rec-media{aspect-ratio:16/9;background:var(--primary-soft);overflow:hidden;}
.rec-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.rec-card:hover .rec-media img{transform:scale(1.04);}
.rec-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rec-body h3{font-size:17px;line-height:1.5;font-weight:600;}
.rec-card:hover .rec-body h3{color:var(--primary);}
.rec-body p{font-size:13.5px;color:var(--ink-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ---------- CTA 区块 ---------- */
.cta-band{
  margin-top:72px;background:var(--primary-soft);border-radius:18px;
  padding:52px 28px;text-align:center;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;}
.cta-band p{font-size:15px;color:var(--ink-2);margin:14px auto 26px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:rgba(255,255,255,.78);padding-top:64px;margin-top:64px;}
.footer-title{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;}
.footer-link{display:block;font-size:13.5px;color:rgba(255,255,255,.7);padding:6px 0;}
.footer-link:hover{color:#fff;transform:translateX(3px);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:46px;padding:20px 0 26px;font-size:13px;color:rgba(255,255,255,.55);}

/* ---------- 移动端底部固定条 ---------- */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  height:64px;background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -10px 26px -16px rgba(11,110,127,.5);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px calc(0px + env(safe-area-inset-bottom,0));
}
.mobile-cta span{font-size:13.5px;color:var(--ink-2);line-height:1.4;}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .container-x{padding-left:26px;padding-right:26px;}
  .cta-band{padding:60px 40px;}
}
@media (min-width:768px){
  .grid-3{grid-template-columns:repeat(2,1fr);}
}
@media (min-width:1024px){
  .side-nav{display:flex;}
  .mobile-top{display:none;}
  .shell{padding-left:248px;}
  .content{padding-top:36px;}
  .article-wrap{padding-right:20px;}
  .sec{padding-top:76px;}
  .mobile-cta{display:none;}
  .cta-band{margin-top:84px;}
}
@media (min-width:1280px){
  .grid-3{grid-template-columns:repeat(3,1fr);}
  .container-x{padding-left:40px;padding-right:40px;}
}
@media (max-width:1023px){
  .shell{padding-bottom:84px;}
}

/* roulang page: category1 */
:root{
    --primary:#0B6E7F;
    --primary-dark:#075763;
    --primary-soft:#E8F3F5;
    --accent:#E07A3F;
    --accent-dark:#C9682F;
    --text:#14212B;
    --muted:#56646F;
    --faint:#8A96A0;
    --border:#E3E9EC;
    --bg:#F7F9FA;
    --card:#FFFFFF;
    --success:#2E8B57;
    --danger:#C4453B;
    --r-card:14px;
    --r-btn:10px;
    --r-img:12px;
    --shadow-card:0 1px 2px rgba(11,110,127,.06), 0 14px 30px -18px rgba(11,110,127,.22);
    --shadow-card-hover:0 2px 4px rgba(11,110,127,.10), 0 20px 36px -16px rgba(11,110,127,.30);
    --side:248px;
  }

  *,*::before,*::after{box-sizing:border-box;}

  body.site-body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }

  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}

  .container-x{max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}

  /* ================= 布局骨架 ================= */
  .app-shell{display:flex;align-items:flex-start;min-height:100vh;}
  .main-col{flex:1;min-width:0;}
  .page-wrap{padding-top:28px;padding-bottom:8px;}

  /* ================= 左侧竖向导航 ================= */
  .side-nav{
    width:var(--side);
    flex:0 0 var(--side);
    position:sticky;
    top:0;
    height:100vh;
    background:var(--card);
    border-right:1px solid var(--border);
    display:flex;
    flex-direction:column;
    padding:22px 16px 20px;
    z-index:50;
  }
  .brand-row{display:flex;align-items:center;gap:12px;padding:0 6px 18px;}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;
    background:var(--primary);color:#fff;
    display:grid;place-items:center;
    font-size:15px;font-weight:700;letter-spacing:.01em;
    box-shadow:0 8px 18px -10px rgba(11,110,127,.85);
    flex:none;
  }
  .brand-mark.small{width:32px;height:32px;border-radius:10px;font-size:13px;}
  .brand-name{font-size:15.5px;font-weight:700;color:var(--text);letter-spacing:.01em;}
  .brand-sub{font-size:12px;color:var(--faint);margin-top:2px;}

  .nav-item{
    display:flex;align-items:center;
    height:44px;padding:0 14px;
    border-radius:10px;
    border-left:3px solid transparent;
    color:var(--muted);
    font-size:14.5px;
    transition:background .18s ease,color .18s ease,border-color .18s ease;
  }
  .nav-item:hover{background:var(--primary-soft);color:var(--primary);border-left-color:var(--primary);}
  .nav-item:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
  .nav-item.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600;border-left-color:var(--primary);}

  .divider-soft{height:1px;background:var(--border);}
  .text-faint{color:var(--faint);}

  /* ================= 按钮 ================= */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;
    border-radius:var(--r-btn);
    border:1px solid transparent;
    font-size:15px;font-weight:600;
    cursor:pointer;
    transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  }
  .btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
  .btn:active{transform:translateY(0);}
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px -12px rgba(224,122,63,.85);}
  .btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);}
  .btn-outline{border-color:var(--primary);color:var(--primary);background:#fff;}
  .btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px);}
  .btn-solid{background:var(--primary);color:#fff;}
  .btn-solid:hover{background:var(--primary-dark);transform:translateY(-2px);}
  .btn-sm{height:40px;font-size:14px;padding:0 16px;}
  .btn-block{width:100%;}

  /* ================= 面包屑 ================= */
  .crumb{font-size:13px;color:var(--faint);display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
  .crumb a{color:var(--primary);transition:opacity .16s ease;}
  .crumb a:hover{opacity:.75;text-decoration:underline;text-underline-offset:4px;}
  .crumb span.sep{color:#C6D0D6;}

  /* ================= 页头（压缩版 Hero） ================= */
  .page-head{
    margin-top:18px;
    background:var(--card);
    border:1px solid var(--border);
    border-radius:16px;
    overflow:hidden;
    display:grid;
    grid-template-columns:1.15fr .85fr;
    box-shadow:var(--shadow-card);
  }
  .page-head-text{padding:38px 40px 34px;display:flex;flex-direction:column;justify-content:center;}
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    background:var(--primary-soft);color:var(--primary);
    font-size:12px;font-weight:600;
    padding:5px 12px;border-radius:999px;
    width:fit-content;
  }
  .page-title{
    margin:16px 0 0;
    font-size:clamp(28px,3.6vw,40px);
    line-height:1.22;
    font-weight:700;
    letter-spacing:.01em;
    color:var(--text);
  }
  .page-sub{margin-top:14px;font-size:16.5px;line-height:1.8;color:var(--muted);max-width:34em;}
  .page-head-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .page-head-media{position:relative;min-height:262px;background:var(--primary-soft);}
  .page-head-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}

  /* ================= 内容小节 ================= */
  .section-block{margin-top:56px;}
  .sec-head{display:flex;align-items:center;gap:14px;margin-bottom:16px;}
  .sec-num{
    width:40px;height:40px;flex:none;
    border-radius:10px;background:var(--primary-soft);color:var(--primary);
    display:grid;place-items:center;font-size:15px;font-weight:700;
  }
  .sec-title{
    margin:0;
    font-size:clamp(21px,2.4vw,27px);
    line-height:1.3;
    font-weight:700;
    color:var(--text);
    letter-spacing:.01em;
  }
  .prose p{margin:0 0 .9em;font-size:16px;line-height:1.85;color:var(--muted);}
  .prose p:last-child{margin-bottom:0;}
  .prose strong{color:var(--text);font-weight:600;}

  .tick-list{list-style:none;margin:0;padding:0;}
  .tick-list li{position:relative;padding-left:26px;margin-bottom:12px;font-size:15.5px;line-height:1.8;color:var(--muted);}
  .tick-list li:last-child{margin-bottom:0;}
  .tick-list li::before{
    content:"";position:absolute;left:0;top:10px;
    width:8px;height:8px;border-radius:999px;background:var(--primary);
  }
  .tick-list li b{color:var(--text);font-weight:600;}

  .flow-list{list-style:none;counter-reset:flow;margin:0;padding:0;}
  .flow-list li{
    counter-increment:flow;
    position:relative;padding-left:44px;margin-bottom:14px;
    font-size:15.5px;line-height:1.8;color:var(--muted);
  }
  .flow-list li:last-child{margin-bottom:0;}
  .flow-list li::before{
    content:counter(flow,decimal-leading-zero);
    position:absolute;left:0;top:2px;
    width:30px;height:30px;border-radius:9px;
    background:var(--primary-soft);color:var(--primary);
    display:grid;place-items:center;
    font-size:12.5px;font-weight:700;
  }

  .figure-block{margin-top:26px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--border);background:var(--primary-soft);}
  .figure-block img{width:100%;aspect-ratio:16/6;object-fit:cover;}

  /* ================= 双卡区 ================= */
  .duo-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:56px;}
  .panel{
    background:var(--card);
    border:1px solid var(--border);
    border-radius:var(--r-card);
    padding:26px 26px 20px;
    box-shadow:var(--shadow-card);
    transition:box-shadow .2s ease,transform .2s ease;
  }
  .panel:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-2px);}
  .panel-title{margin:0 0 6px;font-size:20px;font-weight:700;color:var(--text);line-height:1.4;}
  .panel-note{margin:0 0 14px;font-size:14px;color:var(--faint);}

  .faq-item{border-bottom:1px solid var(--border);}
  .faq-item:last-child{border-bottom:0;}
  .faq-item summary{
    list-style:none;cursor:pointer;
    display:flex;justify-content:space-between;align-items:center;gap:16px;
    padding:15px 0;
    font-size:16.5px;font-weight:600;color:var(--text);
    transition:color .18s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--primary);}
  .faq-item summary:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
  .faq-item summary::after{
    content:"+";flex:none;
    color:var(--primary);font-size:20px;font-weight:600;line-height:1;
    transition:transform .2s ease;
  }
  .faq-item[open] summary::after{transform:rotate(45deg);}
  .faq-body{padding:0 0 16px 24px;font-size:15px;line-height:1.85;color:var(--muted);}

  .timeline{list-style:none;position:relative;margin:6px 0 0;padding:0 0 0 34px;}
  .timeline::before{
    content:"";position:absolute;left:10px;top:8px;bottom:14px;
    width:2px;background:var(--primary-soft);
  }
  .timeline li{position:relative;padding-bottom:22px;}
  .timeline li:last-child{padding-bottom:0;}
  .timeline li::before{
    content:"";position:absolute;left:-34px;top:4px;
    width:20px;height:20px;border-radius:999px;
    background:#fff;border:2px solid var(--primary);
  }
  .timeline .tl-title{font-size:16px;font-weight:600;color:var(--text);line-height:1.5;}
  .timeline .tl-desc{font-size:14.5px;line-height:1.8;color:var(--muted);margin-top:4px;}

  /* ================= CTA 区块 ================= */
  .cta-band{
    margin-top:56px;
    background:var(--primary-soft);
    border-radius:16px;
    padding:48px 32px;
    text-align:center;
  }
  .cta-band h2{
    margin:0;font-size:clamp(22px,2.6vw,30px);line-height:1.32;font-weight:700;color:var(--text);
  }
  .cta-band p{margin:12px auto 0;max-width:38em;font-size:15.5px;line-height:1.85;color:var(--muted);}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:26px;}

  /* ================= 页脚 ================= */
  .site-footer{background:#0E2A30;color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:64px;}
  .footer-title{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px;}
  .footer-link{
    display:block;font-size:13.5px;padding:6px 0;
    color:rgba(255,255,255,.66);
    transition:color .16s ease,padding-left .16s ease;
  }
  .footer-link:hover{color:#fff;padding-left:4px;}
  .footer-link:focus-visible{outline:2px solid rgba(255,255,255,.6);outline-offset:2px;border-radius:6px;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);
    margin-top:48px;padding:20px 0;
    font-size:13px;color:rgba(255,255,255,.55);
  }
  .footer-spacer{height:0;}

  /* ================= 移动端顶栏与抽屉 ================= */
  .mobile-topbar{
    display:none;
    position:sticky;top:0;z-index:70;
    height:60px;background:#fff;
    border-bottom:1px solid var(--border);
    align-items:center;justify-content:space-between;
    padding:0 16px;
  }
  .menu-btn{
    width:42px;height:42px;border-radius:10px;
    border:1px solid var(--border);background:#fff;
    display:grid;place-items:center;gap:4px;
    cursor:pointer;transition:background .18s ease;
  }
  .menu-btn:hover{background:var(--primary-soft);}
  .menu-btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
  .menu-btn span{display:block;width:18px;height:2px;background:var(--primary);border-radius:2px;margin:2px 0;}

  .drawer{position:fixed;inset:0;z-index:90;display:none;}
  .drawer.open{display:block;}
  .drawer-mask{position:absolute;inset:0;background:rgba(20,33,43,.45);}
  .drawer-panel{
    position:absolute;top:0;left:0;right:0;
    background:#fff;
    padding:18px 16px 24px;
    transform:translateY(-100%);
    transition:transform .2s ease;
    max-height:100vh;overflow-y:auto;
  }
  .drawer.open .drawer-panel{transform:translateY(0);}
  .drawer-link{
    display:flex;align-items:center;
    height:56px;padding:0 4px;
    border-bottom:1px solid var(--border);
    font-size:15.5px;color:var(--muted);
    transition:color .16s ease,background .16s ease;
  }
  .drawer-link:hover{color:var(--primary);background:var(--primary-soft);}
  .drawer-link.is-active{color:var(--primary);font-weight:600;}
  .drawer-close{
    width:38px;height:38px;border-radius:10px;
    border:1px solid var(--border);background:#fff;
    color:var(--primary);font-size:20px;line-height:1;
    cursor:pointer;
  }

  /* ================= 移动端底部固定条 ================= */
  .mobile-cta{
    display:none;
    position:fixed;left:0;right:0;bottom:0;z-index:80;
    height:64px;background:#fff;
    border-top:1px solid var(--border);
    box-shadow:0 -8px 20px -14px rgba(11,110,127,.5);
    align-items:center;justify-content:space-between;
    gap:12px;
    padding:0 16px calc(env(safe-area-inset-bottom,0px));
  }
  .mobile-cta p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.4;}

  /* ================= 响应式 ================= */
  @media (max-width:1279px){
    .page-head-text{padding:32px 30px 28px;}
  }

  @media (max-width:1023px){
    .side-nav{display:none;}
    .mobile-topbar{display:flex;}
    .mobile-cta{display:flex;}
    .footer-spacer{height:64px;}
    .page-head{grid-template-columns:1fr;}
    .page-head-media{min-height:240px;position:relative;order:2;}
    .page-head-text{order:1;padding:28px 22px 26px;}
    .duo-grid{grid-template-columns:1fr;}
    .cta-band{padding:38px 22px;}
    .section-block{margin-top:46px;}
    .duo-grid{margin-top:46px;}
  }

  @media (max-width:767px){
    .container-x{padding-left:16px;padding-right:16px;}
    .page-wrap{padding-top:20px;}
    .page-head-media{min-height:210px;}
    .figure-block img{aspect-ratio:16/9;}
  }

  @media (max-width:519px){
    .page-title{font-size:26px;}
    .page-head-media{min-height:180px;}
    .cta-actions .btn{width:100%;}
  }

/* roulang page: category2 */
:root{
  --primary:#0B6E7F;
  --primary-dark:#075763;
  --primary-soft:#E8F3F5;
  --accent:#E07A3F;
  --accent-dark:#C96A33;
  --ink:#14212B;
  --muted:#56646F;
  --faint:#8A96A0;
  --line:#E3E9EC;
  --page:#F7F9FA;
  --card:#FFFFFF;
  --success:#2E8B57;
  --warn:#C4453B;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(11,110,127,.06),0 14px 30px -18px rgba(11,110,127,.22);
  --shadow-card-hover:0 1px 2px rgba(11,110,127,.07),0 20px 38px -18px rgba(11,110,127,.30);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;background-color:var(--primary-soft);}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,transform .18s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

/* 容器 */
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container-x{padding:0 32px;}}
@media (min-width:1024px){.container-x{padding:0 40px;}}

/* 排版层级 */
.h1{font-size:clamp(28px,3.6vw,42px);line-height:1.22;font-weight:700;letter-spacing:.01em;color:var(--ink);}
.h2{font-size:clamp(22px,2.6vw,30px);line-height:1.34;font-weight:700;letter-spacing:.01em;color:var(--ink);}
.h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--ink);}
.lead{font-size:17px;line-height:1.9;color:var(--muted);}
.eyebrow{font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--primary);}
.text-muted{color:var(--muted);}
.text-faint{color:var(--faint);}

/* 品牌标记 */
.brand-mark{
  width:40px;height:40px;flex:0 0 auto;border-radius:12px;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;letter-spacing:.02em;
  box-shadow:0 10px 22px -12px rgba(11,110,127,.75);
}
.brand-mark.small{width:34px;height:34px;border-radius:10px;font-size:13px;}

/* 左侧竖向导航 */
.side-shell{display:block;}
@media (min-width:1024px){
  .side-shell{display:flex;align-items:flex-start;}
}
.side-nav-desktop{
  display:none;
}
@media (min-width:1024px){
  .side-nav-desktop{
    display:flex;flex-direction:column;
    width:248px;flex:0 0 248px;
    background:#fff;border-right:1px solid var(--line);
    position:sticky;top:0;height:100vh;
  }
}
.nav-item{
  position:relative;display:flex;align-items:center;
  height:44px;padding:0 14px 0 18px;border-radius:10px;
  font-size:14.5px;color:var(--muted);font-weight:500;
  transition:background-color .18s ease,color .18s ease,padding-left .18s ease;
}
.nav-item::before{
  content:'';position:absolute;left:4px;top:12px;bottom:12px;width:3px;
  border-radius:999px;background:transparent;transition:background-color .18s ease;
}
.nav-item:hover{background:var(--primary-soft);color:var(--primary);padding-left:22px;}
.nav-item:hover::before{background:var(--primary);}
.nav-item.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.nav-item.is-active::before{background:var(--primary);}
.divider-soft{height:1px;background:var(--line);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:all .2s ease;
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 12px 26px -14px rgba(224,122,63,.85);}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-2px);}
.btn-accent:active{transform:translateY(0);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);}
.btn-outline{border-color:var(--primary);color:var(--primary);background:#fff;}
.btn-outline:hover{background:var(--primary-soft);}
.btn-block{width:100%;}
.btn-sm{height:40px;font-size:14px;padding:0 16px;}

/* 卡片 */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  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-card-hover);}
.card-flat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;background:var(--primary-soft);color:var(--primary);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}

/* 面包屑 */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--faint);}
.breadcrumb a{color:var(--primary);font-weight:500;}
.breadcrumb a:hover{text-decoration:underline;text-underline-offset:4px;}

/* 区块节奏 */
.section{padding:48px 0;}
@media (min-width:1024px){.section{padding:84px 0;}}
.section-tight{padding:32px 0;}
@media (min-width:1024px){.section-tight{padding:44px 0;}}

/* 页头 */
.page-head{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:26px;box-shadow:var(--shadow-card);
}
@media (min-width:768px){.page-head{padding:34px;}}
@media (min-width:1024px){.page-head{padding:40px;}}
.head-media{
  width:100%;height:240px;object-fit:cover;border-radius:14px;
}
@media (min-width:1024px){.head-media{height:268px;}}
.head-points{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:18px;}
.head-points span{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;color:var(--muted);
}
.head-points span::before{
  content:'';width:8px;height:8px;border-radius:50%;
  background:var(--primary);flex:0 0 auto;
}

/* 编号小节 */
.num-block{
  width:52px;height:52px;flex:0 0 auto;border-radius:14px;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:19px;letter-spacing:.02em;
}
.prose-p{font-size:16px;line-height:1.9;color:var(--muted);margin-top:14px;}
.check-list{margin-top:16px;}
.check-list li{
  position:relative;padding-left:24px;font-size:15.5px;line-height:1.85;
  color:var(--muted);
}
.check-list li + li{margin-top:10px;}
.check-list li::before{
  content:'';position:absolute;left:4px;top:11px;
  width:8px;height:8px;border-radius:50%;background:var(--primary);
}
.rule{border-top:1px solid var(--line);}

/* 时间线步骤 */
.step-timeline li{position:relative;padding-left:34px;padding-bottom:26px;}
.step-timeline li:last-child{padding-bottom:0;}
.step-timeline li::before{
  content:'';position:absolute;left:6px;top:6px;width:13px;height:13px;
  border-radius:50%;background:#fff;border:3px solid var(--primary);
  box-shadow:0 0 0 3px rgba(11,110,127,.10);
}
.step-timeline li::after{
  content:'';position:absolute;left:12px;top:24px;bottom:2px;width:1px;background:var(--line);
}
.step-timeline li:last-child::after{display:none;}

/* FAQ */
.faq details{border-top:1px solid var(--line);}
.faq details:first-of-type{border-top:0;}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:16.5px;font-weight:600;color:var(--ink);
  transition:color .18s ease;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--primary);}
.faq summary::after{
  content:'+';flex:0 0 auto;width:24px;height:24px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:600;line-height:1;
  transition:transform .2s ease,background-color .2s ease;
}
.faq details[open] summary::after{content:'−';transform:rotate(180deg);}
.faq .faq-body{padding:0 0 20px 24px;font-size:15px;line-height:1.85;color:var(--muted);}

/* CTA 面板 */
.cta-panel{
  background:var(--primary-soft);border-radius:20px;
  padding:44px 26px;text-align:center;
}
@media (min-width:768px){.cta-panel{padding:56px 40px;}}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:26px;}

/* 页脚 */
.site-footer{background:#0E2A30;color:rgba(255,255,255,.78);padding-top:56px;}
@media (min-width:1024px){.site-footer{padding-top:72px;}}
.footer-title{color:#fff;font-size:13px;font-weight:600;letter-spacing:.06em;margin-bottom:14px;}
.footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:5px 0;}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  margin-top:44px;padding:20px 0;font-size:13px;color:rgba(255,255,255,.6);
}
@media (max-width:1023px){
  .site-footer{padding-bottom:96px;}
}

/* 移动端顶栏与抽屉 */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -8px 22px -14px rgba(20,33,43,.28);
}
@media (min-width:1024px){.mobile-bar{display:none;}}
.mobile-top{
  position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
  height:60px;display:flex;align-items:center;justify-content:space-between;
  padding:0 18px;
}
@media (min-width:1024px){.mobile-top{display:none;}}
.burger{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  cursor:pointer;transition:background-color .18s ease,border-color .18s ease;
}
.burger:hover{background:var(--primary-soft);border-color:var(--primary);}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--primary);}
.drawer{position:fixed;inset:0;z-index:60;display:none;}
.drawer.is-open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(20,33,43,.45);}
.drawer-panel{
  position:absolute;top:0;left:0;right:0;background:#fff;
  transform:translateY(-100%);transition:transform .2s ease;
  max-height:100vh;overflow-y:auto;padding:0 20px 26px;
  border-bottom-left-radius:16px;border-bottom-right-radius:16px;
}
.drawer.is-open .drawer-panel{transform:translateY(0);}
.drawer-head{
  height:60px;display:flex;align-items:center;justify-content:space-between;
  border-bottom:1px solid var(--line);
}
.drawer-item{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;border-bottom:1px solid var(--line);
  font-size:15.5px;color:var(--muted);font-weight:500;
}
.drawer-item:hover,.drawer-item.is-active{color:var(--primary);font-weight:600;}
.drawer-item.is-active{background:var(--primary-soft);padding:0 12px;border-radius:10px;}

/* 图文卡 */
.media-16x9{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;}
.link-arrow{color:var(--primary);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;}
.link-arrow::after{content:'→';transition:transform .18s ease;}
.link-arrow:hover::after{transform:translateX(3px);}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px;}

@media (max-width:639px){
  .num-block{width:44px;height:44px;font-size:16px;border-radius:12px;}
  .h2{font-size:22px;}
  .faq summary{font-size:15.5px;}
}