/* roulang page: index */
:root{
  --brand-900:#0B3A47;
  --brand-700:#12657A;
  --brand-500:#1B8CA6;
  --brand-200:#B8DEE7;
  --brand-050:#E4F2F6;
  --accent-500:#E08A3C;
  --accent-100:#FBEDDC;
  --ink:#10202A;
  --body:#35474F;
  --muted:#6B7E87;
  --line:#E3EAEE;
  --bg:#F6F8F9;
  --surface:#FFFFFF;
  --radius-card:16px;
  --radius-lg:24px;
  --shadow-card:0 10px 30px -14px rgba(11,58,71,.20);
  --shadow-hover:0 18px 34px -16px rgba(11,58,71,.28);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:96px;
  font-family:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:8px;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container-x{padding:0 32px;}}
.num{font-variant-numeric:tabular-nums;}
.h1{font-size:clamp(30px,4.2vw,52px);line-height:1.16;font-weight:800;letter-spacing:-.01em;color:var(--ink);}
.h2{font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:700;color:var(--ink);}
.h3{font-size:20px;line-height:1.4;font-weight:700;color:var(--ink);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--brand-700);text-transform:uppercase;}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--brand-500);border-radius:2px;}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-1{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.dock-wrap{position:fixed;top:20px;left:0;right:0;z-index:60;padding:0 16px;}
.dock{
  max-width:1120px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:10px 14px;box-shadow:0 10px 30px -14px rgba(11,58,71,.20);
  transition:background .22s ease-out,backdrop-filter .22s ease-out,box-shadow .22s ease-out;
}
.dock.scrolled{background:rgba(255,255,255,.93);backdrop-filter:blur(6px);box-shadow:0 12px 32px -16px rgba(11,58,71,.30);}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-050);color:var(--brand-700);border:1px solid var(--brand-200);flex:none;
}
.logo-text{font-weight:700;font-size:17px;color:var(--ink);letter-spacing:.01em;}
.nav-link{
  position:relative;font-size:15px;color:var(--body);padding:9px 14px;border-radius:999px;
  transition:color .2s ease-out;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--brand-500);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;border-radius:2px;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{background:var(--brand-050);color:var(--brand-700);font-weight:600;}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent-500);color:#fff;font-weight:600;font-size:15px;
  padding:12px 24px;border-radius:999px;border:1px solid transparent;
  box-shadow:0 10px 22px -14px rgba(224,138,60,.9);
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 26px -14px rgba(224,138,60,.95);background:#D07C2E;}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--surface);color:var(--brand-700);font-weight:600;font-size:15px;
  padding:11px 22px;border-radius:999px;border:1px solid var(--brand-500);
  transition:transform .2s ease-out,background .2s ease-out,border-color .2s ease-out;
}
.btn-ghost:hover{transform:translateY(-2px);background:var(--brand-050);border-color:var(--brand-700);}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--brand-700);
  transition:background .2s ease-out,border-color .2s ease-out;
}
.icon-btn:hover{background:var(--brand-050);border-color:var(--brand-200);}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-200);}
.badge{
  display:inline-flex;align-items:center;background:var(--brand-050);color:var(--brand-700);
  border-radius:999px;padding:4px 12px;font-size:12px;font-weight:600;line-height:1.6;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;background:var(--brand-050);color:var(--brand-700);
  border:1px solid var(--brand-200);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:500;
}
.hero{
  background:linear-gradient(180deg,var(--bg) 0%,var(--brand-050) 100%);
  border-bottom:1px solid var(--line);
}
.trust-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);}
.trust-line span{display:inline-flex;align-items:center;}
.trust-line span+span::before{content:"·";margin-right:10px;color:var(--brand-200);}
.stat-num{font-size:clamp(28px,3.4vw,40px);font-weight:800;color:var(--brand-500);line-height:1.1;}
.step-index{
  font-size:clamp(46px,6vw,72px);font-weight:800;color:var(--brand-050);line-height:1;
  letter-spacing:-.03em;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;display:flex;align-items:flex-start;justify-content:space-between;
  gap:18px;padding:22px 0 22px 18px;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-700);}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;background:var(--brand-500);border-radius:3px;
}
.faq-icon{
  flex:none;width:24px;height:24px;margin-top:3px;color:var(--brand-500);
  transition:transform .22s ease-out;
}
.faq-item[open] .faq-icon{transform:rotate(180deg);}
.faq-body{padding:0 0 24px 18px;font-size:15.5px;line-height:1.9;color:var(--body);max-width:760px;}
.cta-block{
  background:var(--brand-900);border-radius:var(--radius-lg);color:#fff;
  padding:clamp(36px,5vw,68px);
}
.footer{background:#F1F5F6;border-top:1px solid var(--line);}
.footer-link{font-size:14.5px;color:var(--body);transition:color .2s ease-out,text-underline-offset .2s ease-out;}
.footer-link:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:4px;}
.partner{
  display:flex;align-items:center;justify-content:center;height:56px;border-radius:8px;
  background:var(--surface);border:1px solid var(--line);color:var(--muted);font-size:13px;
  opacity:.55;filter:grayscale(1);transition:opacity .2s ease-out,filter .2s ease-out;
}
.partner:hover{opacity:1;filter:grayscale(0);}
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;align-items:center;justify-content:space-between;
  gap:12px;background:var(--surface);border-top:1px solid var(--line);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  box-shadow:0 -10px 24px -18px rgba(11,58,71,.5);
}
.empty-state{
  text-align:center;padding:56px 20px;border:1px dashed var(--brand-200);border-radius:var(--radius-card);
  background:var(--surface);
}
.divider{height:1px;background:var(--line);border:0;margin:0;}
.image-fallback{background:var(--brand-050);}
@media(max-width:767px){
  body{padding-top:88px;padding-bottom:84px;}
  .dock{border-radius:20px;padding:10px 12px;}
}
@media(min-width:1024px){
  body{padding-bottom:0;}
}

/* roulang page: article */
:root{
    --brand-900:#0B3A47;
    --brand-700:#12657A;
    --brand-500:#1B8CA6;
    --brand-200:#B8DEE7;
    --brand-050:#E4F2F6;
    --accent-500:#E08A3C;
    --accent-100:#FBEDDC;
    --ink:#10202A;
    --body:#35474F;
    --muted:#6B7E87;
    --line:#E3EAEE;
    --bg:#F6F8F9;
    --surface:#FFFFFF;
    --radius:16px;
    --radius-lg:24px;
    --shadow:0 10px 30px -14px rgba(11,58,71,.20);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    padding-top:92px;
    font-family:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
    background:var(--bg);
    color:var(--body);
    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:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  input{font:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  .num,time{font-variant-numeric:tabular-nums;}
  :focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}

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

  /* ---------- Dock 导航 ---------- */
  header.site-header{position:fixed;top:0;left:0;right:0;z-index:60;padding:16px 16px 0;}
  .dock{
    max-width:1120px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;
    gap:14px;background:var(--surface);border:1px solid var(--line);
    border-radius:999px;padding:10px 14px;box-shadow:var(--shadow);
    transition:box-shadow .22s ease-out, backdrop-filter .22s ease-out, background-color .22s ease-out;
  }
  .dock.is-scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(6px);box-shadow:0 12px 34px -18px rgba(11,58,71,.34);}
  .logo-mark{
    width:36px;height:36px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-050);color:var(--brand-700);flex:0 0 auto;
  }
  .logo-text{font-weight:700;font-size:17px;color:var(--ink);letter-spacing:.01em;}
  .nav-link{
    display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:999px;
    font-size:15px;color:var(--body);position:relative;transition:color .18s ease-out,background-color .18s ease-out;
  }
  .nav-link:hover{color:var(--brand-700);background:var(--brand-050);}
  .nav-link.active{background:var(--brand-050);color:var(--brand-700);font-weight:700;}
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;border-radius:2px;
    background:var(--brand-500);transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
  }
  .nav-link:hover::after{transform:scaleX(1);}
  .icon-btn{
    width:44px;height:44px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
    color:var(--brand-700);border:1px solid var(--line);background:var(--surface);
    transition:background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  }
  .icon-btn:hover{background:var(--brand-050);border-color:var(--brand-200);}
  .icon-btn[aria-expanded="true"]{background:var(--brand-050);border-color:var(--brand-200);}
  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;
    border-radius:999px;background:var(--accent-500);color:#fff;font-weight:700;font-size:15px;
    transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out;
    box-shadow:0 8px 20px -10px rgba(224,138,60,.75);
  }
  .btn-primary:hover{background:#D07C2E;transform:translateY(-2px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;
    border-radius:12px;background:var(--surface);border:1px solid var(--brand-500);color:var(--brand-700);
    font-weight:700;font-size:15px;transition:background-color .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  }
  .btn-ghost:hover{background:var(--brand-050);transform:translateY(-2px);border-color:var(--brand-700);}

  #mobilePanel{display:none;}
  #mobilePanel.open{display:block;}
  .mobile-panel{
    max-width:1120px;margin:12px auto 0;background:var(--surface);border:1px solid var(--line);
    border-radius:16px;padding:16px;box-shadow:var(--shadow);
  }
  .mobile-panel a{
    display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:12px;
    color:var(--body);font-size:15.5px;transition:background-color .18s ease-out,color .18s ease-out;
  }
  .mobile-panel a:hover,.mobile-panel a.active{background:var(--brand-050);color:var(--brand-700);font-weight:700;}
  .search-row{
    display:flex;align-items:center;gap:8px;margin:0 12px 12px;padding:8px 12px;
    border:1px solid var(--line);border-radius:12px;background:var(--bg);
  }
  .search-row input{flex:1;border:0;background:transparent;outline:none;font-size:15px;color:var(--ink);}
  #searchPanel{display:none;}
  #searchPanel.open{display:block;}

  /* ---------- 通用组件 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
    background:var(--brand-050);color:var(--brand-700);font-size:12.5px;font-weight:700;letter-spacing:.02em;
  }
  .badge-accent{background:var(--accent-100);color:#9A5A1C;}
  .chip{
    display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;
    background:var(--brand-050);color:var(--brand-700);font-size:13.5px;border:1px solid var(--brand-200);
  }
  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:var(--shadow);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .card:hover{transform:translateY(-2px);border-color:var(--brand-200);box-shadow:0 16px 36px -16px rgba(11,58,71,.30);}
  .divider{border:0;border-top:1px solid var(--line);}

  /* ---------- 面包屑 ---------- */
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);}
  .crumb a{color:var(--muted);transition:color .18s ease-out;}
  .crumb a:hover{color:var(--brand-700);}
  .crumb li{display:inline-flex;align-items:center;gap:8px;min-width:0;}
  .crumb li+li::before{content:"/";color:#C4D2D8;}
  .crumb .current{color:var(--body);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

  /* ---------- 文章头 ---------- */
  .article-head{
    background:linear-gradient(180deg,#F6F8F9 0%,#E4F2F6 100%);
    border-bottom:1px solid var(--line);
    padding:28px 0 40px;
  }
  @media(min-width:768px){.article-head{padding:36px 0 56px;}}
  .article-head h1{
    font-size:clamp(26px,3.6vw,42px);line-height:1.3;font-weight:800;letter-spacing:-.01em;
    color:var(--ink);margin-top:16px;max-width:900px;
  }
  .meta-row{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;
    font-size:13.5px;color:var(--muted);
  }
  .meta-row span.dot{color:#C4D2D8;}
  .meta-line{margin-top:20px;border-top:1px solid var(--line);}

  /* ---------- 正文排版 ---------- */
  .article-body{
    color:var(--body);font-size:17px;line-height:1.9;overflow-wrap:break-word;max-width:100%;
  }
  .article-body>*+*{margin-top:1.45em;}
  .article-body p{font-size:17px;line-height:1.9;}
  .article-body h2{
    position:relative;font-size:clamp(20px,2.4vw,28px);line-height:1.35;font-weight:700;
    color:var(--ink);margin-top:2.3em;padding-left:16px;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;background:var(--brand-500);
  }
  .article-body h3{font-size:20px;line-height:1.5;font-weight:700;color:var(--ink);margin-top:1.9em;}
  .article-body h4{font-size:17.5px;font-weight:700;color:var(--brand-700);margin-top:1.6em;}
  .article-body ul{padding-left:1.35em;}
  .article-body ul li{position:relative;margin-top:.55em;}
  .article-body ul li::before{
    content:"";position:absolute;left:-1.05em;top:.78em;width:7px;height:7px;border-radius:50%;background:var(--brand-500);
  }
  .article-body ol{list-style:decimal;padding-left:1.5em;}
  .article-body ol li{margin-top:.55em;}
  .article-body ol li::marker{color:var(--brand-500);font-weight:700;}
  .article-body blockquote{
    border-left:4px solid var(--brand-500);background:var(--brand-050);color:var(--brand-900);
    padding:18px 22px;border-radius:0 12px 12px 0;margin-top:1.6em;
  }
  .article-body blockquote p{font-size:16.5px;}
  .article-body img{border-radius:12px;margin:1.6em auto 0;height:auto;}
  .article-body figure{margin:1.6em 0 0;}
  .article-body figcaption{text-align:center;font-size:13.5px;color:var(--muted);margin-top:10px;}
  .article-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
  .article-body a:hover{color:var(--brand-500);}
  .article-body strong{color:var(--ink);}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}
  .article-body table{
    display:block;overflow-x:auto;max-width:100%;border-collapse:collapse;font-size:15px;
    border:1px solid var(--line);border-radius:12px;background:var(--surface);
  }
  .article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap;}
  .article-body thead th{background:var(--brand-050);color:var(--brand-900);font-weight:700;}
  .article-body tbody tr:nth-child(even){background:#FAFCFD;}

  /* ---------- 侧栏 ---------- */
  .side-card{padding:22px;}
  .side-title{font-size:15px;font-weight:700;color:var(--ink);}
  .side-list li+li{margin-top:2px;}
  .side-link{
    display:flex;align-items:flex-start;gap:10px;padding:10px 12px;border-radius:12px;
    font-size:14.5px;color:var(--body);line-height:1.6;
    transition:background-color .18s ease-out,color .18s ease-out;
  }
  .side-link:hover{background:var(--brand-050);color:var(--brand-700);}
  .side-link .idx{color:var(--brand-500);font-weight:700;font-variant-numeric:tabular-nums;}
  .sticky-col{position:sticky;top:112px;}

  /* ---------- 相关推荐 ---------- */
  .rel-card{overflow:hidden;display:flex;flex-direction:column;}
  .rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-050);}
  .rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
  .rel-card:hover .rel-thumb img{transform:scale(1.04);}
  .line-clamp-1{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
  .line-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

  /* ---------- CTA ---------- */
  .cta-block{
    background:var(--brand-900);color:#fff;border-radius:var(--radius-lg);
    padding:40px 28px;box-shadow:0 20px 50px -26px rgba(11,58,71,.7);
  }
  @media(min-width:768px){.cta-block{padding:56px 48px;}}
  .cta-block h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;color:#fff;}
  .cta-block p{color:#C6DEE4;font-size:15.5px;margin-top:14px;max-width:640px;}
  .cta-soft{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
    padding:24px;box-shadow:var(--shadow);
  }

  /* ---------- 页脚 ---------- */
  .footer{background:#F1F5F6;border-top:1px solid var(--line);margin-top:72px;}
  @media(min-width:768px){.footer{margin-top:104px;}}
  .footer-link{font-size:14.5px;color:var(--body);transition:color .18s ease-out,text-underline-offset .18s ease-out;}
  .footer-link:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}

  /* ---------- 底部固定转化条 ---------- */
  .bottom-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:70;background:rgba(255,255,255,.97);
    border-top:1px solid var(--line);box-shadow:0 -8px 24px -18px rgba(11,58,71,.5);
    padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  }
  @media(min-width:1024px){.bottom-bar{display:none;}}
  @media(max-width:1023px){body{padding-bottom:84px;}}

  .empty-box{
    border:1px dashed var(--brand-200);background:var(--brand-050);border-radius:var(--radius);
    padding:44px 24px;text-align:center;
  }

/* roulang page: category1 */
:root{
    --brand-900:#0B3A47;
    --brand-700:#12657A;
    --brand-500:#1B8CA6;
    --brand-200:#B8DEE7;
    --brand-050:#E4F2F6;
    --accent-500:#E08A3C;
    --accent-100:#FBEDDC;
    --ink:#10202A;
    --body:#35474F;
    --muted:#6B7E87;
    --line:#E3EAEE;
    --bg:#F6F8F9;
    --surface:#FFFFFF;
    --radius-card:16px;
    --radius-lg:24px;
    --radius-btn:12px;
    --shadow-card:0 10px 30px -14px rgba(11,58,71,.20);
    --shadow-card-hover:0 18px 40px -16px rgba(11,58,71,.28);
    --ring:0 0 0 2px var(--accent-500);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    padding-top:104px;
    background:var(--bg);
    color:var(--body);
    font-family:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
    font-size:16.5px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;cursor:pointer;}
  h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  .num,.tabular{font-variant-numeric:tabular-nums;}
  :focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}

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

  /* ---------- 浮动 Dock 导航 ---------- */
  .dock{
    position:fixed;top:18px;left:50%;transform:translateX(-50%);
    width:calc(100% - 28px);max-width:1120px;z-index:80;
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:10px 14px;
    background:rgba(255,255,255,.97);
    border:1px solid var(--line);
    border-radius:999px;
    box-shadow:0 10px 30px -14px rgba(11,58,71,.20);
    transition:background .22s ease-out,box-shadow .22s ease-out,backdrop-filter .22s ease-out;
  }
  .dock.scrolled{background:rgba(255,255,255,.9);backdrop-filter:blur(6px);box-shadow:0 14px 34px -16px rgba(11,58,71,.26);}
  @media (max-width:767px){
    .dock{border-radius:18px;top:12px;padding:10px 12px;}
  }

  .logo-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:36px;height:36px;flex:0 0 36px;border-radius:11px;
    background:var(--brand-050);color:var(--brand-700);
    border:1px solid var(--brand-200);
  }
  .logo-text{font-weight:700;font-size:17px;letter-spacing:.01em;color:var(--ink);}

  .nav-link{
    position:relative;display:inline-flex;align-items:center;height:42px;padding:0 15px;
    border-radius:999px;font-size:15px;color:var(--body);
    transition:color .2s ease-out,background-color .2s ease-out;
  }
  .nav-link::after{
    content:"";position:absolute;left:15px;right:15px;bottom:7px;height:2px;
    background:var(--brand-700);border-radius:2px;transform:scaleX(0);transform-origin:left;
    transition:transform .2s ease-out;
  }
  .nav-link:hover{color:var(--brand-700);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--brand-700);background:var(--brand-050);font-weight:600;}
  .nav-link.active::after{transform:scaleX(1);}

  .icon-btn{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:999px;
    background:#fff;border:1px solid var(--line);color:var(--brand-700);
    transition:background-color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
  }
  .icon-btn:hover{background:var(--brand-050);border-color:var(--brand-200);transform:translateY(-1px);}

  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:999px;
    background:var(--accent-500);color:#fff;font-size:15px;font-weight:600;
    border:1px solid var(--accent-500);
    box-shadow:0 8px 20px -10px rgba(224,138,60,.7);
    transition:background-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
  }
  .btn-primary:hover{background:#cf7c31;transform:translateY(-2px);box-shadow:0 12px 26px -12px rgba(224,138,60,.8);}
  .btn-primary:active{transform:translateY(0);}

  .btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
    background:#fff;color:var(--brand-700);font-size:15px;font-weight:600;
    border:1px solid var(--brand-500);
    transition:background-color .2s ease-out,color .2s ease-out,transform .2s ease-out;
  }
  .btn-ghost:hover{background:var(--brand-050);transform:translateY(-2px);}

  .btn-link{
    display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-500);
    transition:color .2s ease-out,gap .2s ease-out;
  }
  .btn-link:hover{color:var(--brand-700);gap:10px;}

  .mobile-panel{
    position:fixed;top:84px;left:14px;right:14px;z-index:79;
    background:#fff;border:1px solid var(--line);border-radius:16px;
    box-shadow:0 18px 40px -18px rgba(11,58,71,.3);
    padding:14px;
  }
  .mobile-panel a.m-link{
    display:flex;align-items:center;justify-content:space-between;
    min-height:48px;padding:0 14px;border-radius:12px;font-size:16px;color:var(--body);
  }
  .mobile-panel a.m-link:hover,.mobile-panel a.m-link.active{background:var(--brand-050);color:var(--brand-700);font-weight:600;}

  .search-panel{
    position:fixed;top:84px;left:50%;transform:translateX(-50%);z-index:79;
    width:calc(100% - 28px);max-width:1120px;
    background:#fff;border:1px solid var(--line);border-radius:16px;
    box-shadow:0 18px 40px -18px rgba(11,58,71,.3);padding:14px;
  }
  .search-panel input{
    flex:1;min-height:46px;padding:0 16px;border-radius:12px;
    border:1px solid var(--line);background:var(--bg);color:var(--ink);font-size:15px;
  }
  .search-panel input:focus{outline:2px solid var(--accent-500);outline-offset:1px;}

  /* ---------- 通用组件 ---------- */
  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    transition:box-shadow .22s ease-out,transform .22s ease-out,border-color .22s ease-out;
  }
  .card:hover{box-shadow:var(--shadow-card-hover);border-color:var(--brand-200);transform:translateY(-2px);}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;
    background:var(--brand-050);color:var(--brand-700);border:1px solid var(--brand-200);
  }
  .chip{
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 16px;border-radius:999px;font-size:14px;
    background:#fff;border:1px solid var(--line);color:var(--body);
    transition:border-color .2s ease-out,background-color .2s ease-out,color .2s ease-out;
  }
  .chip:hover{border-color:var(--brand-200);background:var(--brand-050);color:var(--brand-700);}
  .chip.is-on{background:var(--brand-500);border-color:var(--brand-500);color:#fff;font-weight:600;}

  .divider{height:1px;background:var(--line);border:0;margin:0;}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13.5px;font-weight:600;letter-spacing:.04em;color:var(--brand-700);
    text-transform:none;
  }
  .eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--brand-500);}

  /* ---------- 分类页 Hero 带 ---------- */
  .cat-hero{
    background:linear-gradient(180deg,#F6F8F9 0%,#E4F2F6 100%);
    border-bottom:1px solid var(--line);
  }
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);}
  .breadcrumb a{color:var(--muted);transition:color .2s ease-out;}
  .breadcrumb a:hover{color:var(--brand-700);}
  .breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
  .breadcrumb li+li::before{content:"/";color:#B4C2C8;}

  .h1-cat{
    font-size:clamp(30px,4.2vw,50px);line-height:1.16;font-weight:800;letter-spacing:-.01em;
  }

  /* ---------- 横向条目 ---------- */
  .entry-row{
    position:relative;
    display:flex;gap:18px;align-items:center;
    padding:18px 20px 18px 22px;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
  }
  .entry-row::before{
    content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:0 3px 3px 0;
    background:var(--brand-500);transform:scaleY(0);transform-origin:top;
    transition:transform .22s ease-out;
  }
  .entry-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:var(--brand-200);}
  .entry-row:hover::before{transform:scaleY(1);}
  .entry-thumb{
    flex:0 0 120px;width:120px;height:80px;border-radius:12px;overflow:hidden;
    background:var(--brand-050);border:1px solid var(--line);
  }
  .entry-thumb img{width:100%;height:100%;object-fit:cover;}
  @media (max-width:640px){
    .entry-row{flex-direction:column;align-items:stretch;padding:16px;}
    .entry-thumb{flex:none;width:100%;height:0;padding-bottom:56.25%;position:relative;}
    .entry-thumb img{position:absolute;inset:0;width:100%;height:100%;}
  }

  .sticky-card{position:sticky;top:108px;}

  /* ---------- 要点编号列表 ---------- */
  .point-item{
    display:flex;gap:16px;padding:22px 0;border-bottom:1px solid var(--line);
  }
  .point-item:last-child{border-bottom:0;}
  .point-num{
    flex:0 0 52px;font-size:40px;line-height:1;font-weight:800;color:var(--brand-050);
    font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  }

  /* ---------- 步骤 ---------- */
  .step-card{
    position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:26px 24px 24px;box-shadow:var(--shadow-card);
    transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
  }
  .step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:var(--brand-200);}
  .step-num{
    display:inline-flex;align-items:center;justify-content:center;
    width:42px;height:42px;border-radius:12px;background:var(--brand-050);color:var(--brand-700);
    font-weight:800;font-size:16px;font-variant-numeric:tabular-nums;border:1px solid var(--brand-200);
  }

  /* ---------- FAQ ---------- */
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:14px;
    padding:20px 4px 20px 16px;border-left:3px solid transparent;
    font-size:17px;font-weight:600;color:var(--ink);
    transition:border-color .2s ease-out,color .2s ease-out,background-color .2s ease-out;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand-700);background:linear-gradient(90deg,var(--brand-050),transparent 70%);}
  .faq-item[open] summary{border-left-color:var(--brand-500);color:var(--brand-700);}
  .faq-icon{
    margin-left:auto;flex:0 0 24px;width:24px;height:24px;color:var(--brand-500);
    transition:transform .22s ease-out;
  }
  .faq-item[open] .faq-icon{transform:rotate(180deg);}
  .faq-body{padding:0 40px 22px 16px;font-size:15.5px;color:var(--body);line-height:1.9;}

  /* ---------- CTA 收尾 ---------- */
  .cta-block{
    background:var(--brand-900);border-radius:var(--radius-lg);
    padding:52px 28px;color:#fff;position:relative;overflow:hidden;
  }
  .cta-block::after{
    content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
    background:rgba(27,140,166,.28);pointer-events:none;
  }
  @media (min-width:768px){ .cta-block{padding:64px 56px;} }

  /* ---------- 页脚 ---------- */
  .footer{background:#F1F5F6;border-top:1px solid var(--line);}
  .footer-link{font-size:14.5px;color:var(--muted);transition:color .2s ease-out,text-underline-offset .2s ease-out;}
  .footer-link:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}

  /* ---------- 底部固定条 ---------- */
  .mobile-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:#fff;border-top:1px solid var(--line);
    box-shadow:0 -10px 26px -16px rgba(11,58,71,.35);
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  }
  @media (min-width:1024px){ .mobile-bar{display:none;} }

  .media-block{border-radius:var(--radius-card);overflow:hidden;background:var(--brand-050);border:1px solid var(--line);}
  .media-block img{width:100%;height:100%;object-fit:cover;}

  @media (max-width:1023px){
    .sticky-card{position:static;}
  }

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  }

/* roulang page: category2 */
:root{
    --brand-900:#0B3A47;
    --brand-700:#12657A;
    --brand-500:#1B8CA6;
    --brand-200:#B8DEE7;
    --brand-050:#E4F2F6;
    --accent-500:#E08A3C;
    --accent-100:#FBEDDC;
    --ink:#10202A;
    --body:#35474F;
    --muted:#6B7E87;
    --line:#E3EAEE;
    --bg:#F6F8F9;
    --surface:#FFFFFF;
    --radius-card:16px;
    --radius-lg:24px;
    --shadow-card:0 10px 30px -14px rgba(11,58,71,.20);
    --shadow-card-hover:0 18px 36px -16px rgba(11,58,71,.30);
    --font-sans:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    padding-top:104px;
    font-family:var(--font-sans);
    font-size:16.5px;
    line-height:1.85;
    color:var(--body);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.28;font-weight:700;}
  h1{font-size:clamp(30px,4.2vw,52px);line-height:1.16;font-weight:800;letter-spacing:-.01em;}
  h2{font-size:clamp(24px,3vw,36px);line-height:1.25;}
  h3{font-size:clamp(19px,1.4vw,22px);}
  p{margin:0 0 1.1em;}
  p:last-child{margin-bottom:0;}
  a{color:var(--brand-700);text-decoration:none;}
  img{max-width:100%;display:block;}
  button,input{font-family:inherit;font-size:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  .num{font-variant-numeric:tabular-nums;}
  :focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:8px;}

  /* 容器 */
  .container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media (min-width:768px){.container-x{padding-left:32px;padding-right:32px;}}
  .section{padding-top:72px;padding-bottom:72px;}
  @media (min-width:768px){.section{padding-top:104px;padding-bottom:104px;}}
  .section-tight{padding-top:56px;padding-bottom:56px;}
  @media (min-width:768px){.section-tight{padding-top:72px;padding-bottom:72px;}}

  /* 头部与浮动导航 */
  .site-header{position:fixed;top:0;left:0;right:0;z-index:60;padding:20px 20px 0;}
  .dock{
    max-width:1120px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;
    gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:999px;
    padding:10px 14px;min-height:64px;
    box-shadow:0 10px 30px -18px rgba(11,58,71,.30);
    transition:background-color .22s ease-out,box-shadow .22s ease-out,backdrop-filter .22s ease-out;
  }
  .dock.scrolled{
    background:rgba(255,255,255,.94);
    backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
    box-shadow:0 14px 34px -20px rgba(11,58,71,.42);
  }
  .logo-mark{
    display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;
    border-radius:11px;background:var(--brand-500);color:#fff;flex:0 0 auto;
  }
  .logo-text{font-weight:700;font-size:17px;letter-spacing:-.01em;color:var(--ink);white-space:nowrap;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
    border-radius:999px;font-size:14.5px;color:var(--body);
    transition:color .2s ease-out,background-color .2s ease-out;
  }
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
    background:var(--brand-500);transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
  }
  .nav-link:hover{color:var(--brand-700);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{background:var(--brand-050);color:var(--brand-700);font-weight:600;}
  .nav-link.active::after{transform:scaleX(0);}
  .icon-btn{
    display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;
    border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--brand-700);
    cursor:pointer;transition:background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  }
  .icon-btn:hover{background:var(--brand-050);border-color:var(--brand-200);}
  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;
    padding:10px 22px;border-radius:999px;border:1px solid transparent;background:var(--accent-500);
    color:#fff;font-size:14.5px;font-weight:600;cursor:pointer;
    transition:background-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
    box-shadow:0 8px 20px -12px rgba(224,138,60,.75);
  }
  .btn-primary:hover{background:#c9762c;transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;
    padding:10px 20px;border-radius:999px;border:1px solid var(--brand-500);background:var(--surface);
    color:var(--brand-700);font-size:14.5px;font-weight:600;cursor:pointer;
    transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  }
  .btn-ghost:hover{background:var(--brand-050);border-color:var(--brand-700);}
  .btn-light{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;
    padding:10px 22px;border-radius:999px;border:1px solid rgba(255,255,255,.35);
    background:transparent;color:#fff;font-size:14.5px;font-weight:600;cursor:pointer;
    transition:background-color .2s ease-out,border-color .2s ease-out;
  }
  .btn-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6);}

  /* 下拉面板与搜索 */
  .mobile-panel,.search-panel{
    max-width:1120px;margin:10px auto 0;background:var(--surface);border:1px solid var(--line);
    border-radius:20px;padding:16px;box-shadow:0 18px 40px -22px rgba(11,58,71,.40);
  }
  .mobile-link{
    display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:14px;
    color:var(--body);font-size:15.5px;transition:background-color .2s ease-out,color .2s ease-out;
  }
  .mobile-link:hover{background:var(--brand-050);color:var(--brand-700);}
  .mobile-link.active{background:var(--brand-050);color:var(--brand-700);font-weight:600;}
  .search-panel form{display:flex;gap:10px;flex-wrap:wrap;}
  .search-panel input{
    flex:1 1 220px;min-height:44px;padding:0 16px;border-radius:999px;
    border:1px solid var(--line);background:#fff;color:var(--ink);
  }
  .search-panel input::placeholder{color:var(--muted);}
  .search-panel input:focus{border-color:var(--brand-200);outline:none;box-shadow:0 0 0 3px var(--brand-050);}

  /* 分类 Hero 窄带 */
  .category-hero{
    position:relative;overflow:hidden;border-bottom:1px solid var(--line);
    background:linear-gradient(120deg,#F6F8F9 0%,#E4F2F6 100%);
    padding-top:56px;padding-bottom:56px;
  }
  @media (min-width:768px){.category-hero{padding-top:72px;padding-bottom:72px;}}
  .hero-media{
    position:absolute;inset:0;pointer-events:none;
    mask-image:linear-gradient(90deg,rgba(0,0,0,0) 0%,rgba(0,0,0,.55) 55%,rgba(0,0,0,.9) 100%);
    -webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,0) 0%,rgba(0,0,0,.55) 55%,rgba(0,0,0,.9) 100%);
  }
  .hero-media img{width:100%;height:100%;object-fit:cover;opacity:.42;}
  .hero-inner{position:relative;z-index:1;}
  .crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);flex-wrap:wrap;}
  .crumb a{color:var(--muted);transition:color .2s ease-out;}
  .crumb a:hover{color:var(--brand-700);}
  .crumb .sep{opacity:.6;}
  .crumb .current{color:var(--brand-700);font-weight:600;}
  .hero-lead{font-size:16.5px;color:var(--body);max-width:640px;}
  .chip{
    display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:6px 14px;
    border-radius:999px;border:1px solid var(--brand-200);background:var(--brand-050);
    color:var(--brand-700);font-size:13.5px;font-weight:600;cursor:pointer;
    transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
  }
  .chip:hover{transform:translateY(-1px);}
  .chip.is-active{background:var(--brand-500);border-color:var(--brand-500);color:#fff;}
  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
    background:var(--brand-050);color:var(--brand-700);font-size:12px;font-weight:600;
  }
  .badge-accent{background:var(--accent-100);color:#A9621F;}

  /* 卡片 */
  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px;box-shadow:var(--shadow-card);
    transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
  }
  .card:hover{transform:translateY(-2px);border-color:var(--brand-200);box-shadow:var(--shadow-card-hover);}
  .card-media{border-radius:14px;overflow:hidden;background:var(--brand-050);}
  .card-media img{width:100%;height:100%;object-fit:cover;}
  .card-title{font-size:19px;font-weight:700;color:var(--ink);transition:color .2s ease-out;}
  .card:hover .card-title{color:var(--brand-700);}
  .card-desc{font-size:14.5px;color:var(--muted);line-height:1.8;}
  .link-more{
    display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--brand-700);
    transition:gap .2s ease-out,color .2s ease-out;
  }
  .link-more:hover{gap:10px;color:var(--brand-500);}

  /* 步骤 */
  .step-mark{
    font-size:52px;line-height:1;font-weight:800;color:var(--brand-050);
    font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  }
  .step-row{
    border-top:1px solid var(--line);padding-top:22px;
    transition:border-color .2s ease-out;
  }
  .step-row:hover{border-color:var(--brand-200);}

  /* 深色区块 */
  .dark-block{
    background:var(--brand-900);border-radius:var(--radius-lg);color:#fff;
    padding:36px 26px;position:relative;overflow:hidden;
  }
  @media (min-width:768px){.dark-block{padding:52px 44px;}}
  .dark-block h2,.dark-block h3{color:#fff;}
  .dark-block p{color:rgba(255,255,255,.82);}
  .stat-num{font-size:clamp(28px,3vw,38px);font-weight:800;color:#fff;font-variant-numeric:tabular-nums;}
  .stat-label{font-size:13px;color:rgba(255,255,255,.72);}

  /* 列表条目 */
  .item-row{
    display:flex;gap:16px;padding:20px;border:1px solid var(--line);border-radius:var(--radius-card);
    background:var(--surface);position:relative;
    transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .item-row::before{
    content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:3px;
    background:var(--brand-500);transform:scaleY(0);transform-origin:top;transition:transform .2s ease-out;
  }
  .item-row:hover{transform:translateY(-2px);border-color:var(--brand-200);box-shadow:var(--shadow-card);}
  .item-row:hover::before{transform:scaleY(1);}
  .item-index{
    flex:0 0 auto;width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:var(--brand-050);color:var(--brand-700);font-weight:700;font-size:14px;
    font-variant-numeric:tabular-nums;
  }

  /* FAQ */
  .faq-list{border-top:1px solid var(--line);}
  .faq-item{position:relative;border-bottom:1px solid var(--line);}
  .faq-item[open]::before{
    content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:3px;background:var(--brand-500);
  }
  .faq-q{
    display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
    padding:20px 8px 20px 16px;cursor:pointer;font-size:16.5px;font-weight:600;color:var(--ink);
    list-style:none;transition:color .2s ease-out;
  }
  .faq-q::-webkit-details-marker{display:none;}
  .faq-q:hover{color:var(--brand-700);}
  .faq-icon{
    flex:0 0 auto;width:28px;height:28px;border-radius:999px;display:flex;align-items:center;justify-content:center;
    border:1px solid var(--line);color:var(--brand-700);background:var(--surface);
    transition:transform .22s ease-out,background-color .22s ease-out,border-color .22s ease-out;
  }
  .faq-item[open] .faq-icon{transform:rotate(180deg);background:var(--brand-050);border-color:var(--brand-200);}
  .faq-a{padding:0 44px 22px 16px;color:var(--body);font-size:15.5px;}

  /* CTA */
  .cta-block{
    background:var(--brand-900);border-radius:var(--radius-lg);color:#fff;
    padding:40px 26px;display:flex;flex-direction:column;gap:24px;
  }
  @media (min-width:768px){.cta-block{padding:52px 48px;flex-direction:row;align-items:center;justify-content:space-between;}}
  .cta-block h2{color:#fff;}
  .cta-block p{color:rgba(255,255,255,.80);max-width:560px;margin-bottom:0;}

  /* 页脚 */
  .footer{background:#F1F5F6;border-top:1px solid var(--line);}
  .footer-link{
    color:var(--body);font-size:14.5px;text-decoration:none;
    transition:color .2s ease-out,text-decoration-color .2s ease-out;
  }
  .footer-link:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:4px;}
  .divider{border:0;border-top:1px solid var(--line);}

  /* 底部固定转化条 */
  .mobile-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;align-items:center;justify-content:space-between;
    gap:12px;background:rgba(255,255,255,.98);border-top:1px solid var(--line);
    box-shadow:0 -10px 26px -18px rgba(11,58,71,.45);
    padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    min-height:62px;
  }
  .mobile-bar p{margin:0;font-size:13.5px;color:var(--body);line-height:1.5;}
  @media (min-width:1024px){.mobile-bar{display:none;}}
  @media (max-width:1023px){body{padding-bottom:86px;}}
  @media (max-width:767px){
    body{padding-top:92px;}
    .site-header{padding:14px 14px 0;}
    .dock{border-radius:20px;min-height:60px;}
    .logo-text{font-size:16px;}
    .faq-q{padding:18px 6px 18px 14px;font-size:15.5px;}
    .faq-a{padding:0 20px 20px 14px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  }