/* roulang page: index */
:root{
  --brand:#1D6F7C;
  --brand-deep:#0E4C59;
  --brand-soft:#E7F2F3;
  --accent:#D96C4F;
  --accent-deep:#B8533B;
  --accent-soft:#FBEDE8;
  --ink:#14242B;
  --ink-2:#3C5159;
  --muted:#5F737A;
  --line:#DCE6E8;
  --bg:#F7FAFA;
  --surface:#FFFFFF;
  --footer-bg:#0E3A42;
  --footer-ink:#EAF4F4;
  --ok:#2E8B6D;
  --warn:#B07A24;
  --err:#B84C4C;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(20,36,43,.06);
  --sh-2:0 18px 40px rgba(20,36,43,.12);
  --ease:cubic-bezier(.2,.6,.2,1);
  --dock-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:3px solid rgba(29,111,124,.28);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}
section{scroll-margin-top:96px}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.container-wide{max-width:1320px}

/* ---------- 浮动 Dock 导航 ---------- */
.dock{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  width:min(1120px,calc(100% - 32px));
  height:var(--dock-h);
  display:flex;align-items:center;gap:16px;
  padding:0 12px 0 16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  z-index:100;
  transition:height .24s var(--ease),box-shadow .24s var(--ease);
}
.dock.is-scrolled{height:56px;box-shadow:var(--sh-2)}
.dock-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.dock-mark{
  width:32px;height:32px;border-radius:10px;
  background:var(--brand);display:grid;place-items:center;flex-shrink:0;
}
.dock-mark svg{width:18px;height:18px;display:block}
.dock-name{font-size:15px;font-weight:700;color:var(--ink);white-space:nowrap;letter-spacing:.2px}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:12px}
.dock-nav a{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 12px;font-size:14px;color:var(--ink-2);
  border-radius:var(--r-pill);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.dock-nav a:hover{background:#F2F7F7;color:var(--brand-deep)}
.dock-nav a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.dock-nav a.active::before{
  content:"";width:4px;height:4px;border-radius:50%;
  background:var(--brand);margin-right:6px;
}
.dock-actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:50%;
  background:var(--surface);color:var(--ink-2);
  transition:background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
  position:relative;
}
.icon-btn:hover{background:var(--brand-soft);border-color:rgba(29,111,124,.4);color:var(--brand-deep)}
.icon-btn svg{width:18px;height:18px}
.badge{
  position:absolute;top:-2px;right:-2px;min-width:16px;height:16px;
  padding:0 4px;border-radius:var(--r-pill);
  background:var(--accent-deep);color:#fff;font-size:10px;font-weight:700;
  display:grid;place-items:center;line-height:1;
}
.burger{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s var(--ease),background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-sm{height:44px;padding:0 20px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;border:1px solid var(--brand)}
.btn-primary:hover{background:var(--brand-deep);border-color:var(--brand-deep)}
.btn-accent{background:var(--accent-deep);color:#fff;border:1px solid var(--accent-deep)}
.btn-accent:hover{background:#9E4530;border-color:#9E4530}
.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--brand-soft);border-color:rgba(29,111,124,.4)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-deep);font-size:14px;font-weight:600;
  padding:4px 0;border-radius:4px;
}
.btn-text svg{width:16px;height:16px;transition:transform .22s var(--ease)}
.btn-text:hover svg{transform:translateX(2px)}
.btn-text:hover{text-decoration:underline;text-underline-offset:4px}
.btn:disabled,.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:calc(var(--dock-h) + 76px) 0 72px;
  background:
    radial-gradient(900px 480px at 84% 6%,rgba(29,111,124,.13),transparent 70%),
    radial-gradient(680px 400px at 4% 96%,rgba(217,108,79,.09),transparent 72%),
    var(--bg);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(29,111,124,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(29,111,124,.04) 1px,transparent 1px);
  background-size:32px 32px;
  -webkit-mask-image:radial-gradient(circle at 50% 26%,#000 0%,transparent 76%);
  mask-image:radial-gradient(circle at 50% 26%,#000 0%,transparent 76%);
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);
  font-size:12px;font-weight:600;color:var(--brand-deep);letter-spacing:.4px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand)}
.hero-title{
  margin-top:20px;
  font-size:clamp(34px,4.6vw,56px);
  line-height:1.16;font-weight:700;letter-spacing:0;
}
.hero-title span{display:block}
.hero-title .l2{color:var(--brand-deep);margin-top:6px}
.hero-sub{
  margin-top:18px;max-width:520px;
  font-size:17px;color:var(--ink-2);line-height:1.75;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;margin-top:40px;padding-top:28px;
  border-top:1px solid var(--line);
}
.hero-stats .stat-num{font-size:24px;font-weight:700;color:var(--brand-deep);line-height:1.2}
.hero-stats .stat-num small{font-size:14px;font-weight:600;margin-left:2px}
.hero-stats .stat-label{font-size:12px;color:var(--muted);margin-top:6px;line-height:1.6}

.hero-visual{position:relative}
.hero-visual::after{
  content:"";position:absolute;right:-14px;top:-26px;width:150px;height:150px;
  border:1.5px dashed rgba(29,111,124,.24);border-radius:50%;z-index:0;
}
.hero-photo{
  position:relative;z-index:1;
  border-radius:var(--r-xl);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-2);
  aspect-ratio:4/5;background:var(--brand-soft);
}
.hero-photo img{width:100%;height:100%;object-fit:cover}
.hero-mini{
  position:absolute;left:-28px;bottom:-24px;z-index:2;
  width:168px;padding:8px;background:var(--surface);
  border-radius:var(--r-md);box-shadow:var(--sh-2);
}
.hero-mini img{width:100%;height:120px;object-fit:cover;border-radius:var(--r-sm)}
.hero-mini figcaption{font-size:11px;color:var(--muted);text-align:center;padding:6px 0 2px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--surface)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:36px;flex-wrap:wrap;
}
.section-head h2{
  position:relative;font-size:clamp(26px,2.6vw,36px);line-height:1.3;font-weight:700;
  padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:12%;height:76%;width:5px;
  background:var(--brand);border-radius:var(--r-pill);
}
.section-head .sec-desc{margin-top:10px;font-size:14px;color:var(--muted);padding-left:16px;max-width:640px}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 主推方案网格 ---------- */
.plans-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.plan-card{
  grid-column:span 3;
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(29,111,124,.28)}
.plan-card:focus-within{outline:3px solid rgba(29,111,124,.24);outline-offset:2px}
.plan-card--lead{grid-column:span 6;grid-row:span 2}
.plan-media{overflow:hidden;aspect-ratio:4/3;background:var(--brand-soft)}
.plan-card--lead .plan-media{aspect-ratio:16/9}
.plan-media img{width:100%;height:100%;object-fit:cover;transition:transform .26s var(--ease)}
.plan-card:hover .plan-media img{transform:scale(1.03)}
.plan-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.plan-card--lead .plan-body{padding:28px}
.plan-tags{display:flex;gap:8px;flex-wrap:wrap}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.5;
}
.tag-brand{background:var(--brand-soft);color:var(--brand-deep)}
.tag-accent{background:var(--accent-soft);color:var(--accent-deep)}
.plan-card h3{font-size:18px;line-height:1.5;font-weight:600;color:var(--ink)}
.plan-card--lead h3{font-size:23px;line-height:1.42}
.plan-text{font-size:14px;color:var(--ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.plan-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted);
}
.plan-price{font-size:15px;font-weight:700;color:var(--accent-deep)}

/* ---------- 客户评价轮播 ---------- */
.review-wrap{position:relative}
.review-controls{display:flex;gap:10px}
.arrow-btn{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);
  display:grid;place-items:center;color:var(--ink-2);
  transition:background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.arrow-btn:hover{background:var(--brand-soft);border-color:rgba(29,111,124,.4);color:var(--brand-deep)}
.arrow-btn:disabled{opacity:.42;cursor:not-allowed}
.arrow-btn svg{width:16px;height:16px}
.review-track{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 20px;scrollbar-width:none;
}
.review-track::-webkit-scrollbar{display:none}
.review-card{
  flex:0 0 auto;width:340px;scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:14px;
}
.stars{display:flex;gap:3px;color:var(--accent)}
.stars svg{width:16px;height:16px}
.review-quote{font-size:15px;line-height:1.85;color:var(--ink-2)}
.review-person{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:8px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;
  background:var(--brand-soft);color:var(--brand-deep);
  display:grid;place-items:center;font-size:14px;font-weight:700;
}
.review-person .pn{font-size:14px;font-weight:600;color:var(--ink);line-height:1.4}
.review-person .pr{font-size:12px;color:var(--muted);line-height:1.4}
.review-progress{height:2px;background:var(--line);border-radius:var(--r-pill);overflow:hidden;margin-top:8px}
.review-progress span{display:block;height:100%;width:30%;background:var(--brand);border-radius:var(--r-pill);transition:width .24s var(--ease)}

/* ---------- 保障条 ---------- */
.guard{background:var(--brand-soft);padding:56px 0}
.guard-inner{display:grid;grid-template-columns:repeat(4,1fr)}
.guard-item{
  padding:4px 24px;border-left:1px solid rgba(29,111,124,.18);
  display:flex;gap:14px;align-items:flex-start;
}
.guard-item:first-child{border-left:0;padding-left:0}
.guard-icon{
  width:38px;height:38px;flex-shrink:0;border-radius:12px;
  background:var(--surface);color:var(--brand-deep);
  display:grid;place-items:center;box-shadow:var(--sh-1);
}
.guard-icon svg{width:20px;height:20px}
.guard-item h3{font-size:15px;font-weight:600;margin-bottom:4px;color:var(--ink)}
.guard-item p{font-size:13px;color:var(--ink-2);line-height:1.7}

/* ---------- 最新信息 ---------- */
.news-filter{display:flex;gap:20px;flex-wrap:wrap;font-size:14px}
.news-filter span{
  position:relative;padding-bottom:6px;color:var(--muted);cursor:pointer;
  transition:color .22s var(--ease);
}
.news-filter span:hover{color:var(--brand-deep)}
.news-filter span.on{color:var(--brand-deep);font-weight:600}
.news-filter span.on::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);border-radius:var(--r-pill);
}
.news-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.news-item{
  grid-column:span 4;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
  box-shadow:var(--sh-1);
}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(29,111,124,.28)}
.news-item:focus-within{outline:3px solid rgba(29,111,124,.24);outline-offset:2px}
.news-item--lead{grid-column:span 6}
.news-item--sm{grid-column:span 3}
.news-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .26s var(--ease)}
.news-item:hover .news-media img{transform:scale(1.03)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-item h3{
  font-size:17px;line-height:1.55;font-weight:600;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-item--lead h3{font-size:21px}
.news-desc{
  font-size:14px;color:var(--ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);
  font-size:12px;color:var(--muted);
}
.empty-state{
  grid-column:1 / -1;
  border:1px dashed var(--line);border-radius:var(--r-lg);
  padding:48px 24px;text-align:center;background:var(--surface);
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.empty-state svg{width:40px;height:40px;color:var(--brand)}
.empty-state p{font-size:14px;color:var(--muted)}
.skeleton{
  grid-column:span 4;border-radius:var(--r-lg);
  background:linear-gradient(100deg,#EFF5F5 30%,#F8FBFB 50%,#EFF5F5 70%);
  background-size:220% 100%;animation:sk 1.4s linear infinite;height:260px;
}
@keyframes sk{from{background-position:140% 0}to{background-position:-40% 0}}

/* ---------- 提交需求 CTA ---------- */
.cta-panel{
  background:var(--footer-bg);
  border-radius:var(--r-xl);
  padding:48px;
  display:grid;grid-template-columns:6fr 4fr;gap:48px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  border:1.5px dashed rgba(255,255,255,.16);border-radius:50%;
}
.cta-copy h2{font-size:clamp(24px,2.4vw,32px);line-height:1.35;color:#fff;font-weight:700}
.cta-copy ul{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.cta-copy li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#CFE4E4;line-height:1.7}
.cta-copy li svg{width:18px;height:18px;flex-shrink:0;margin-top:3px;color:#8FD3C6}
.cta-note{margin-top:22px;font-size:12px;color:#9DBFC2}
.form-card{
  background:var(--surface);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-2);position:relative;z-index:1;
  transform:translateY(-8px);
}
.form-card h3{font-size:18px;font-weight:700;margin-bottom:4px}
.form-hint{font-size:12px;color:var(--muted);margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--ink-2)}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:12px;
  background:var(--surface);padding:0 14px;height:48px;
  font-size:14px;color:var(--ink);outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235F737A' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 4px rgba(29,111,124,.12);
}
.field input.err,.field textarea.err{border-color:var(--err)}
.field .err-msg{display:none;font-size:12px;color:var(--err);margin-top:6px}
.field.has-err .err-msg{display:block}
.check{display:flex;gap:8px;align-items:flex-start;font-size:12px;color:var(--muted);line-height:1.6;margin:4px 0 16px}
.check input{width:16px;height:16px;margin-top:2px;accent-color:var(--brand);flex-shrink:0}
.form-success{
  display:none;background:#EAF6F0;color:var(--ok);border:1px solid rgba(46,139,109,.28);
  border-radius:12px;padding:10px 14px;font-size:13px;margin-bottom:14px;
}
.form-success.on{display:block}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-side{position:sticky;top:100px}
.faq-side h2{
  position:relative;font-size:clamp(26px,2.6vw,36px);line-height:1.3;font-weight:700;padding-left:16px;
}
.faq-side h2::before{content:"";position:absolute;left:0;top:12%;height:76%;width:5px;background:var(--brand);border-radius:var(--r-pill)}
.faq-side p{margin:12px 0 22px;font-size:14px;color:var(--muted);line-height:1.8}
.faq-contact{
  background:var(--brand-soft);border-radius:var(--r-lg);padding:22px;
  display:flex;flex-direction:column;gap:10px;
}
.faq-contact strong{font-size:15px;color:var(--brand-deep)}
.faq-contact span{font-size:13px;color:var(--ink-2)}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--ink);
  cursor:pointer;list-style:none;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-deep)}
.faq-plus{width:20px;height:20px;flex-shrink:0;color:var(--muted);transition:transform .24s var(--ease),color .24s var(--ease)}
.faq-item[open] .faq-plus{transform:rotate(45deg);color:var(--brand)}
.faq-a{padding:0 0 22px;max-width:720px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- 页脚 ---------- */
.footer{background:var(--footer-bg);color:var(--footer-ink);padding:64px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-mark{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.14);display:grid;place-items:center}
.footer-mark svg{width:18px;height:18px}
.footer-brand span{font-size:20px;font-weight:700;color:#fff;letter-spacing:.2px}
.footer p{font-size:13px;line-height:1.85;color:#A8C7CA;max-width:320px}
.footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer li{margin-bottom:10px}
.footer li a{font-size:13px;color:#B9D3D5;transition:color .2s var(--ease)}
.footer li a:hover{color:var(--accent-soft);text-decoration:underline;text-underline-offset:4px}
.footer-meta{font-size:13px;color:#A8C7CA;line-height:2}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#8FB2B6;
}
.footer-bottom a{color:#8FB2B6}
.footer-bottom a:hover{color:var(--accent-soft)}

/* ---------- 抽屉 ---------- */
.overlay{
  position:fixed;inset:0;background:rgba(14,36,43,.42);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
  z-index:110;
}
.overlay.on{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(420px,100%);
  background:var(--surface);border-radius:24px 0 0 24px;
  transform:translateX(100%);transition:transform .28s var(--ease);
  z-index:120;display:flex;flex-direction:column;padding:24px;
  box-shadow:var(--sh-2);
}
.drawer.on{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-head h3{font-size:18px;font-weight:700}
.drawer-empty{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;border:1px dashed var(--line);border-radius:var(--r-lg);
  padding:32px 20px;text-align:center;color:var(--muted);font-size:13px;
}
.drawer-empty svg{width:40px;height:40px;color:var(--brand)}
.drawer .btn{margin-top:16px;width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero{padding-top:calc(var(--dock-h) + 60px)}
  .hero-sub{max-width:none}
  .hero-photo{aspect-ratio:16/10}
  .hero-mini{left:auto;right:12px;bottom:-20px;width:150px}
  .plans-grid .plan-card{grid-column:span 6}
  .plan-card--lead{grid-column:span 12;grid-row:auto}
  .news-item--lead{grid-column:span 12}
  .news-item--sm{grid-column:span 6}
  .news-item{grid-column:span 6}
  .guard-inner{grid-template-columns:repeat(2,1fr);gap:28px 0}
  .guard-item:nth-child(3){border-left:0;padding-left:0}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:36px}
  .form-card{transform:none}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-side{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:960px){
  .dock-nav{display:none}
  .burger{display:grid}
  .dock{padding:0 10px 0 14px}
  .dock-name{font-size:14px}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .guard{padding:44px 0}
  .guard-inner{grid-template-columns:1fr}
  .guard-item{border-left:0;padding:0 0 0 0;border-top:1px solid rgba(29,111,124,.18);padding-top:20px}
  .guard-item:first-child{border-top:0;padding-top:0}
  .review-card{width:300px}
  .footer-grid{grid-template-columns:1fr}
  .footer{padding:48px 0 20px}
  .cta-panel{padding:28px;border-radius:var(--r-lg)}
  .plans-grid .plan-card{grid-column:span 12}
  .news-item,.news-item--sm{grid-column:span 12}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .dock{width:calc(100% - 24px);top:10px}
  .hero{padding-top:calc(var(--dock-h) + 44px);padding-bottom:52px}
  .hero-title{font-size:32px}
  .hero-stats{grid-template-columns:1fr;gap:14px;text-align:left}
  .hero-stats .stat{display:flex;align-items:baseline;gap:10px}
  .hero-stats .stat-label{margin-top:0}
  .hero-cta .btn{width:100%}
  .hero-mini{width:120px}
  .hero-mini img{height:84px}
  .btn{height:46px;padding:0 20px}
  .form-card{padding:20px}
  .cta-panel{padding:22px}
  .section-head{margin-bottom:26px}
  .faq-item summary{font-size:16px;padding:18px 0}
  .review-card{width:82vw}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .plan-card:hover,.news-item:hover,.btn:hover{transform:none}
}

/* roulang page: article */
:root{
  --brand:#1D6F7C;
  --brand-deep:#0E4C59;
  --brand-soft:#E7F2F3;
  --accent:#D96C4F;
  --accent-deep:#B8533B;
  --accent-soft:#FBEDE8;
  --ink:#14242B;
  --ink-2:#3C5159;
  --muted:#5F737A;
  --line:#DCE6E8;
  --bg:#F7FAFA;
  --surface:#FFFFFF;
  --success:#2E8B6D;
  --warn:#B07A24;
  --error:#B84C4C;
  --r-sm:10px;
  --r-md:20px;
  --r-lg:26px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(20,36,43,.06);
  --sh-2:0 18px 40px rgba(20,36,43,.12);
  --t:240ms cubic-bezier(.2,.6,.2,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-deep);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0;}
p{margin:0 0 20px;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(29,111,124,.28);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.reading-progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:var(--brand);z-index:99;transition:width 80ms linear;
}

/* ============ Dock 导航 ============ */
.site-header{position:relative;z-index:100;}
.dock{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  width:min(1120px,calc(100% - 32px));
  height:64px;
  display:flex;align-items:center;gap:16px;
  padding:0 12px 0 16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  transition:height var(--t),box-shadow var(--t);
  z-index:100;
}
.dock.is-scrolled{height:56px;box-shadow:var(--sh-2);}
.dock-logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.dock-mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.dock-mark svg{width:20px;height:20px;}
.dock-name{
  font-size:15px;font-weight:700;color:var(--ink);white-space:nowrap;
}
.dock-nav{
  display:flex;align-items:center;gap:4px;margin:0 auto;
}
.dock-nav a{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:500;color:var(--ink-2);
  padding:8px 12px;border-radius:var(--r-pill);
  transition:background var(--t),color var(--t);
  white-space:nowrap;
}
.dock-nav a:hover{background:#F2F7F7;color:var(--brand-deep);}
.dock-nav a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}
.dock-nav a.active::before{
  content:"";width:4px;height:4px;border-radius:50%;background:var(--brand);flex-shrink:0;
}
.dock-right{display:flex;align-items:center;gap:8px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-2);
  cursor:pointer;transition:background var(--t),border-color var(--t),color var(--t);
}
.icon-btn:hover{background:var(--brand-soft);border-color:rgba(29,111,124,.4);color:var(--brand-deep);}
.icon-btn svg{width:18px;height:18px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background var(--t),color var(--t),transform var(--t),box-shadow var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--accent-deep);color:#fff;}
.btn-accent:hover{background:#9E4531;color:#fff;transform:translateY(-1px);}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{background:var(--brand-soft);border-color:rgba(29,111,124,.4);color:var(--brand-deep);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-deep);
  padding:0;background:none;border:none;cursor:pointer;
}
.btn-text svg{transition:transform var(--t);}
.btn-text:hover svg{transform:translateX(2px);}
.menu-toggle{display:none;}

.drawer-mask{
  position:fixed;inset:0;background:rgba(14,36,43,.42);z-index:110;
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:16px;left:16px;right:16px;z-index:120;
  background:var(--surface);border-radius:24px;border:1px solid var(--line);
  box-shadow:var(--sh-2);padding:16px;
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:transform var(--t),opacity var(--t),visibility var(--t);
}
.drawer.open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer a.drawer-link{
  display:flex;align-items:center;height:44px;padding:0 12px;
  font-size:15px;color:var(--ink);border-radius:12px;font-weight:500;
}
.drawer a.drawer-link:hover{background:var(--brand-soft);color:var(--brand-deep);}
.drawer .btn{width:100%;margin-top:12px;}

/* ============ 面包屑 ============ */
.crumbs{
  margin-top:104px;padding:20px 0 0;
  font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center;
}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:4px;}
.crumbs .sep{color:#A9BABE;}
.crumbs .cur{color:var(--brand-deep);font-weight:600;max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头 ============ */
.article-head{max-width:860px;margin:0 auto;padding:32px 0 0;text-align:left;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-deep);
}
.article-head h1{
  font-size:clamp(30px,4vw,44px);line-height:1.25;margin:18px 0 0;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-top:18px;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#B7C7CB;}
.cover-wrap{max-width:1200px;margin:32px auto 0;}
.cover-wrap img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:24px;border:1px solid var(--line);
}
.cover-cap{font-size:12px;color:var(--muted);text-align:center;margin-top:12px;}

/* ============ 正文布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 300px;
  gap:64px;max-width:1124px;margin:56px auto 0;padding:0 24px;align-items:start;
}
.article-body{
  font-size:17px;line-height:1.95;color:var(--ink-2);min-width:0;
}
.article-body p{margin:0 0 20px;}
.article-body > p:first-of-type{font-size:18px;color:var(--ink-2);font-weight:500;}
.article-body h2{
  font-size:26px;line-height:1.4;margin:40px 0 16px;padding-left:12px;
  border-left:4px solid var(--brand);color:var(--ink);
}
.article-body h3{font-size:20px;line-height:1.5;margin:28px 0 12px;color:var(--ink);}
.article-body h4{font-size:17px;margin:22px 0 10px;color:var(--ink);}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:4px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:1.2em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:8px;}
.article-body blockquote{
  margin:24px 0;padding:20px 24px;background:var(--brand-soft);
  border-left:4px solid var(--brand);border-radius:0 12px 12px 0;color:var(--ink);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;margin:24px 0 8px;width:100%;height:auto;}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;display:block;overflow-x:auto;
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:12px 16px;text-align:left;vertical-align:top;
}
.article-body th{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}
.article-body code{
  background:#F1F5F6;border-radius:6px;padding:2px 6px;font-size:14px;
}
.article-body pre{
  background:#F1F5F6;border-radius:12px;padding:16px;overflow-x:auto;font-size:13px;
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

/* ============ 侧栏 ============ */
.sidebar{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:16px;margin-bottom:14px;color:var(--ink);}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;font-size:13px;line-height:1.6;color:var(--muted);
  padding:6px 0 6px 12px;border-left:2px solid transparent;
  transition:color var(--t),border-color var(--t);
}
.toc-list a:hover{color:var(--brand-deep);}
.toc-list a.active{color:var(--brand-deep);font-weight:600;border-left-color:var(--brand);}
.rel-list{display:flex;flex-direction:column;gap:14px;}
.rel-item{display:flex;gap:12px;align-items:flex-start;}
.rel-item img{
  width:80px;height:60px;object-fit:cover;border-radius:10px;flex-shrink:0;
  border:1px solid var(--line);
}
.rel-item .rel-t{
  font-size:13px;line-height:1.5;color:var(--ink);font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-item .rel-d{font-size:12px;color:var(--muted);margin-top:4px;}
.rel-item:hover .rel-t{color:var(--brand-deep);}
.toc-details{display:none;}

/* ============ 文末 ============ */
.article-foot{max-width:760px;margin:48px auto 0;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;padding:24px 0;border-top:1px solid var(--line);}
.tag-pill{
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);color:var(--ink-2);
}
.tag-pill:hover{background:var(--brand-soft);border-color:rgba(29,111,124,.4);color:var(--brand-deep);}
.act-row{display:flex;gap:10px;padding-bottom:24px;}
.author-card{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);
}
.author-avatar{
  width:48px;height:48px;border-radius:50%;background:var(--brand-soft);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;flex-shrink:0;
}
.author-card .an{font-size:15px;font-weight:700;color:var(--ink);}
.author-card .ar{font-size:12px;color:var(--brand-deep);font-weight:600;margin-bottom:6px;}
.author-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.7;}

.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px;}
.pn-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 20px;transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.pn-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(29,111,124,.24);}
.pn-card .pn-l{font-size:12px;color:var(--muted);margin-bottom:6px;}
.pn-card .pn-t{font-size:15px;font-weight:600;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.pn-card:hover .pn-t{color:var(--brand-deep);}

.related-block{max-width:1124px;margin:64px auto 0;padding:0 24px;}
.related-block h2{font-size:26px;margin-bottom:8px;}
.related-block .sub{font-size:14px;color:var(--muted);margin-bottom:28px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(29,111,124,.24);}
.rel-card .thumb{overflow:hidden;background:var(--brand-soft);}
.rel-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform var(--t);}
.rel-card:hover .thumb img{transform:scale(1.03);}
.rel-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;}
.rel-card h3{
  font-size:17px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card p{font-size:13px;color:var(--muted);line-height:1.7;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.back-entry{max-width:1124px;margin:40px auto 64px;padding:0 24px;}

/* ============ 异常态 ============ */
.empty-state{
  max-width:640px;margin:64px auto 96px;padding:56px 32px;text-align:center;
  background:var(--surface);border:1px dashed #C4D5D8;border-radius:var(--r-lg);
}
.empty-state svg{width:56px;height:56px;color:var(--brand);margin:0 auto 20px;}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{font-size:14px;color:var(--muted);margin-bottom:24px;}

/* ============ CTA ============ */
.cta-panel{
  background:var(--brand-deep);border-radius:28px;color:#EAF4F4;
  padding:48px;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;
}
.cta-panel h2{color:#fff;font-size:clamp(24px,2.6vw,32px);line-height:1.35;margin-bottom:16px;}
.cta-panel p{color:rgba(234,244,244,.82);font-size:15px;margin-bottom:10px;}
.cta-panel .btn-accent{margin-top:20px;}
.cta-side{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:20px;padding:24px;}
.cta-side h3{color:#fff;font-size:16px;margin-bottom:12px;}
.cta-side ul{display:flex;flex-direction:column;gap:10px;}
.cta-side li{font-size:13px;color:rgba(234,244,244,.86);display:flex;gap:8px;align-items:flex-start;}
.cta-side li svg{width:16px;height:16px;flex-shrink:0;margin-top:4px;color:#8FD3CE;}
.cta-wrap{max-width:1124px;margin:0 auto 72px;padding:0 24px;}

/* ============ 页脚 ============ */
.footer{background:#0E3A42;color:#EAF4F4;padding:64px 0 24px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-mark{
  width:34px;height:34px;border-radius:9px;background:rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:center;
}
.footer-mark svg{width:20px;height:20px;}
.footer-brand span:last-child{font-size:20px;font-weight:700;color:#fff;}
.footer p{font-size:13px;color:rgba(234,244,244,.72);line-height:1.8;margin:0;}
.footer h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer ul{display:flex;flex-direction:column;gap:10px;}
.footer ul a{font-size:13px;color:rgba(234,244,244,.78);}
.footer ul a:hover{color:var(--accent-soft);text-decoration:underline;text-underline-offset:4px;}
.footer-meta{font-size:13px;color:rgba(234,244,244,.72);line-height:2;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:rgba(234,244,244,.6);
}

/* ============ 移动底部操作条 ============ */
.mobile-bar{
  display:none;position:fixed;bottom:0;left:0;right:0;height:56px;z-index:95;
  background:var(--surface);border-top:1px solid var(--line);
  padding:0 16px calc(env(safe-area-inset-bottom,0px));
  align-items:center;gap:12px;
}
.mobile-bar .btn{flex:1;height:40px;font-size:13px;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .sidebar{display:none;}
  .toc-details{
    display:block;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-md);padding:16px 20px;margin-bottom:24px;
  }
  .toc-details summary{
    font-size:15px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none;
  }
  .toc-details summary::-webkit-details-marker{display:none;}
  .toc-details[open] summary{margin-bottom:12px;color:var(--brand-deep);}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .cta-panel{grid-template-columns:1fr;padding:36px;}
}
@media (max-width:960px){
  .dock-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .dock{gap:8px;padding:0 10px 0 14px;}
  .dock-right .btn-primary{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .crumbs{margin-top:96px;}
  .article-layout{padding:0 20px;margin-top:40px;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:23px;margin:34px 0 14px;}
  .article-body h3{font-size:19px;}
  .cover-wrap{padding:0 20px;}
  .article-head{padding:28px 20px 0;}
  .prevnext{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .related-block,.back-entry,.cta-wrap{padding:0 20px;}
  .article-foot{padding:0 20px;}
  .cta-panel{padding:28px;border-radius:22px;}
  .mobile-bar{display:flex;}
  body{padding-bottom:72px;}
  .footer{padding:48px 0 20px;}
}
@media (max-width:520px){
  .dock{height:58px;width:calc(100% - 24px);top:12px;}
  .dock-name{font-size:14px;}
  .crumbs{margin-top:88px;}
  .article-head h1{font-size:27px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .author-card{flex-direction:column;gap:12px;}
  .empty-state{padding:40px 20px;margin:40px 20px 72px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:color var(--t),background var(--t) !important;}
  html{scroll-behavior:auto;}
  .reading-progress{transition:none;}
}

/* roulang page: category1 */
:root{
  --brand:#1D6F7C;
  --brand-deep:#0E4C59;
  --brand-soft:#E7F2F3;
  --accent:#D96C4F;
  --accent-deep:#B8533B;
  --accent-soft:#FBEDE8;
  --ink:#14242B;
  --ink-2:#3C5159;
  --muted:#5F737A;
  --line:#DCE6E8;
  --bg:#F7FAFA;
  --surface:#FFFFFF;
  --success:#2E8B6D;
  --warn:#B07A24;
  --error:#B84C4C;
  --footer-bg:#0E3A42;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-xl:28px;
  --pill:999px;
  --sh-1:0 8px 24px rgba(20,36,43,.06);
  --sh-2:0 18px 40px rgba(20,36,43,.12);
  --t:240ms cubic-bezier(.2,.6,.2,1);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink-2);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(29,111,124,.28);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
[id]{scroll-margin-top:96px}

/* ---------- 浮动 Dock 导航 ---------- */
.dock-wrap{position:fixed;top:16px;left:0;right:0;display:flex;justify-content:center;padding:0 16px;z-index:100}
.dock{
  width:min(1120px,100%);height:64px;display:flex;align-items:center;gap:12px;
  padding:0 12px 0 14px;background:#fff;border:1px solid var(--line);
  border-radius:var(--pill);box-shadow:var(--sh-1);
  transition:height var(--t),box-shadow var(--t);
}
.dock.is-scrolled{height:56px;box-shadow:var(--sh-2)}
.brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--brand);display:grid;place-items:center;flex:0 0 auto}
.brand-mark svg{width:20px;height:20px}
.dock-nav{display:flex;align-items:center;gap:2px;margin-left:6px}
.dock-nav a{
  position:relative;font-size:14px;padding:8px 12px;border-radius:var(--pill);
  color:var(--ink-2);transition:background var(--t),color var(--t);white-space:nowrap;
}
.dock-nav a:hover{background:#F2F7F7;color:var(--brand-deep)}
.dock-nav a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.dock-nav a.active::before{
  content:"";position:absolute;left:5px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--brand);
}
.dock-right{margin-left:auto;display:flex;align-items:center;gap:8px}
.icon-btn{
  position:relative;width:40px;height:40px;display:grid;place-items:center;
  border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink-2);
  transition:background var(--t),color var(--t),border-color var(--t);
}
.icon-btn:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:rgba(29,111,124,.4)}
.icon-btn svg{width:18px;height:18px}
.cart-badge{
  position:absolute;top:-2px;right:-2px;min-width:18px;height:18px;padding:0 4px;
  border-radius:var(--pill);background:var(--accent-deep);color:#fff;
  font-size:11px;font-weight:700;line-height:18px;text-align:center;
}
.menu-btn{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--pill);
  font-size:14px;font-weight:600;border:1px solid transparent;
  transition:background var(--t),color var(--t),transform var(--t),box-shadow var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px)}
.btn-accent{background:var(--accent-deep);color:#fff}
.btn-accent:hover{background:#9E4430;transform:translateY(-1px)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--brand-soft);border-color:rgba(29,111,124,.4)}
.btn-lg{height:48px;padding:0 24px;font-size:15px}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-deep);font-weight:600;font-size:14px}
.link-arrow svg{width:16px;height:16px;transition:transform var(--t)}
.link-arrow:hover svg{transform:translateX(2px)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- 通用标签 ---------- */
.tag{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:var(--pill);background:var(--brand-soft);color:var(--brand-deep);
}
.tag-accent{background:var(--accent-soft);color:var(--accent-deep)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  color:var(--brand-deep);background:var(--brand-soft);
  padding:6px 14px;border-radius:var(--pill);margin-bottom:20px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:140px 0 72px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 18% 6%,rgba(29,111,124,.12),transparent 46%),
    radial-gradient(circle at 88% 82%,rgba(217,108,79,.08),transparent 42%),
    linear-gradient(rgba(29,111,124,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(29,111,124,.045) 1px,transparent 1px);
  background-size:auto,auto,32px 32px,32px 32px;
}
.hero .container{position:relative}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap}
.crumbs a{color:var(--brand-deep)}
.crumbs a:hover{text-decoration:underline;text-underline-offset:4px}
.crumbs span[aria-current]{color:var(--muted)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(34px,4.6vw,56px);line-height:1.16}
.hero h1 .h1-key{display:block;color:var(--ink)}
.hero h1 .h1-brand{display:block;color:var(--brand);margin-top:6px}
.hero-lead{font-size:17px;line-height:1.85;color:var(--ink-2);max-width:520px;margin-top:22px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:44px;max-width:520px}
.stat{border-top:2px solid var(--line);padding-top:14px}
.stat b{display:block;font-size:24px;font-weight:700;color:var(--brand-deep);line-height:1.3}
.stat span{display:block;font-size:12px;color:var(--muted);margin-top:4px;line-height:1.6}

.hero-media{position:relative}
.hero-media-main{
  position:relative;border-radius:24px;overflow:hidden;
  box-shadow:var(--sh-2);border:1px solid var(--line);background:var(--brand-soft);
}
.hero-media-main img{width:100%;aspect-ratio:4/5;object-fit:cover}
.hero-media-sub{
  position:absolute;left:-28px;bottom:-26px;width:168px;height:128px;
  border-radius:16px;border:8px solid #fff;overflow:hidden;
  box-shadow:var(--sh-2);background:var(--brand-soft);
}
.hero-media-sub img{width:100%;height:100%;object-fit:cover}
.hero-arc{
  position:absolute;right:-24px;top:-24px;width:120px;height:120px;
  border:1.5px dashed rgba(29,111,124,.35);border-radius:50%;pointer-events:none;
}
.hero-arc::after{
  content:"";position:absolute;right:14px;bottom:-6px;width:8px;height:8px;
  border-radius:2px;background:var(--accent);opacity:.7;
}

/* ---------- 板块基础 ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(26px,2.6vw,36px);line-height:1.3;padding-left:14px;border-left:4px solid var(--brand)}
.section-head p{font-size:15px;color:var(--muted);margin-top:14px}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- 方案布局 ---------- */
.plans-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}
.filter{position:sticky;top:96px}
.filter-title{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.04em;margin-bottom:10px}
.filter-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:11px 0;font-size:14px;color:var(--ink-2);border-bottom:1px dashed var(--line);
  transition:color var(--t),padding-left var(--t);
}
.filter-list a:hover{color:var(--brand-deep);padding-left:4px}
.filter-list a span{font-size:12px;color:var(--muted)}
.filter-card{background:var(--brand-soft);border-radius:var(--r-lg);padding:20px;margin-top:24px}
.filter-card b{display:block;font-size:15px;color:var(--brand-deep);margin-bottom:8px}
.filter-card p{font-size:13px;line-height:1.75;color:var(--ink-2);margin-bottom:14px}
.filter-card .btn{width:100%;height:40px;font-size:13px}

.plans-group + .plans-group{margin-top:56px}
.plans-group h2{font-size:clamp(22px,2.2vw,28px);line-height:1.35;margin-bottom:6px}
.plans-group .group-note{font-size:14px;color:var(--muted);margin-bottom:24px}
.plans-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}

.plan-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(29,111,124,.24)}
.plan-card:focus-within{box-shadow:0 0 0 3px rgba(29,111,124,.16),var(--sh-2)}
.plan-thumb{position:relative;overflow:hidden;background:var(--brand-soft)}
.plan-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform var(--t)}
.plan-card:hover .plan-thumb img{transform:scale(1.03)}
.plan-no{
  position:absolute;left:16px;top:16px;background:rgba(255,255,255,.95);
  color:var(--brand-deep);font-size:12px;font-weight:700;letter-spacing:.04em;
  padding:4px 10px;border-radius:var(--pill);box-shadow:var(--sh-1);
}
.plan-body{display:flex;flex-direction:column;gap:10px;padding:22px 24px 24px;flex:1}
.plan-body h3{font-size:19px;line-height:1.5}
.plan-desc{
  font-size:15px;line-height:1.75;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.plan-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.plan-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step-no{
  width:38px;height:38px;border-radius:12px;background:var(--brand-soft);color:var(--brand-deep);
  display:grid;place-items:center;font-weight:700;font-size:14px;margin-bottom:16px;
}
.step h3{font-size:17px;line-height:1.5;margin-bottom:8px}
.step p{font-size:14px;line-height:1.8;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:100px}
.faq-aside h2{font-size:clamp(24px,2.4vw,32px);line-height:1.35;padding-left:14px;border-left:4px solid var(--brand)}
.faq-aside p{font-size:14px;color:var(--muted);margin-top:14px}
.faq-contact{background:var(--brand-soft);border-radius:var(--r-lg);padding:22px;margin-top:24px}
.faq-contact b{display:block;font-size:15px;color:var(--brand-deep);margin-bottom:8px}
.faq-contact p{font-size:13px;line-height:1.8;color:var(--ink-2);margin-bottom:16px}
.faq-contact .btn{width:100%}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-deep)}
.faq-plus{flex:0 0 auto;width:22px;height:22px;color:var(--brand);transition:transform var(--t),color var(--t)}
.faq-item[open] .faq-plus{transform:rotate(45deg);color:var(--accent-deep)}
.faq-answer{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:720px}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--brand-soft);border:1px solid rgba(29,111,124,.16);
  border-radius:var(--r-xl);padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.2vw,28px);line-height:1.35}
.cta-band p{font-size:14px;color:var(--ink-2);margin-top:10px;max-width:520px}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.footer{background:var(--footer-bg);color:#EAF4F4;padding:64px 0 24px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-mark{
  width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.12);
  display:grid;place-items:center;flex:0 0 auto;
}
.footer-mark svg{width:20px;height:20px}
.footer h4{font-size:15px;color:#fff;margin-bottom:14px;font-weight:700}
.footer ul li{margin-bottom:10px}
.footer a{font-size:14px;color:rgba(234,244,244,.82);transition:color var(--t)}
.footer a:hover{color:var(--accent-soft);text-decoration:underline;text-underline-offset:4px}
.footer p{font-size:14px;line-height:1.9;color:rgba(234,244,244,.75);max-width:280px}
.footer-meta{font-size:14px;line-height:1.9;color:rgba(234,244,244,.75)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(234,244,244,.65);
}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,36,43,.42);z-index:98;
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.drawer{
  position:fixed;left:16px;right:16px;top:16px;z-index:99;background:#fff;
  border-radius:24px;padding:16px;box-shadow:var(--sh-2);
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:transform var(--t),opacity var(--t),visibility var(--t);
}
body.menu-open .drawer-mask{opacity:1;visibility:visible}
body.menu-open .drawer{transform:translateY(0);opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-links a{
  display:flex;align-items:center;min-height:44px;padding:0 12px;border-radius:12px;
  font-size:15px;color:var(--ink-2);
}
.drawer-links a:hover,.drawer-links a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.drawer .btn{width:100%;margin-top:12px}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero{padding-top:124px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{max-width:520px}
  .hero-media-main img{aspect-ratio:16/11}
  .hero-media-sub{width:140px;height:106px;left:auto;right:-12px;bottom:-20px}
  .hero-arc{display:none}
  .plans-layout{grid-template-columns:1fr;gap:32px}
  .filter{position:static;top:auto}
  .filter-list{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
  .filter-list::-webkit-scrollbar{display:none}
  .filter-list a{
    flex:0 0 auto;border:1px solid var(--line);border-radius:var(--pill);
    padding:8px 16px;background:#fff;white-space:nowrap;
  }
  .filter-list a:hover{padding-left:16px;background:var(--brand-soft)}
  .filter-list a span{display:none}
  .filter-card{display:none}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static;top:auto}
}
@media (max-width:960px){
  .dock-nav{display:none}
  .menu-btn{display:grid}
  .dock-cta{display:none}
  .dock{height:60px;padding-right:8px}
  .dock.is-scrolled{height:54px}
}
@media (max-width:768px){
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .plans-grid{grid-template-columns:1fr}
  .cta-band{padding:28px;flex-direction:column;align-items:flex-start}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{flex:1 1 auto}
  .footer{padding-top:48px;margin-top:72px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer p{max-width:none}
  .hero-stats{max-width:none}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero{padding:112px 0 56px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-stats{grid-template-columns:1fr;gap:12px;margin-top:32px}
  .stat{border-top-width:1px;padding-top:10px}
  .hero-media-sub{display:none}
  .steps{grid-template-columns:1fr}
  .plan-body{padding:18px 18px 20px}
  .plan-body h3{font-size:17px}
  .footer-grid{grid-template-columns:1fr}
  .brand span.brand-text{font-size:14px}
  .faq-item summary{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .plan-card:hover,.step:hover,.btn:hover{transform:none}
  .plan-card:hover .plan-thumb img{transform:none}
}

/* roulang page: category2 */
:root{
  --brand:#1D6F7C;
  --brand-deep:#0E4C59;
  --brand-soft:#E7F2F3;
  --accent:#D96C4F;
  --accent-deep:#B8533B;
  --accent-soft:#FBEDE8;
  --ink:#14242B;
  --ink-2:#3C5159;
  --muted:#5F737A;
  --line:#DCE6E8;
  --bg:#F7FAFA;
  --surface:#FFFFFF;
  --success:#2E8B6D;
  --warn:#B07A24;
  --error:#B84C4C;
  --r-sm:10px;
  --r-md:12px;
  --r-lg:20px;
  --r-xl:24px;
  --r-2xl:28px;
  --r-full:999px;
  --sh-1:0 8px 24px rgba(20,36,43,.06);
  --sh-2:0 18px 40px rgba(20,36,43,.12);
  --ease:cubic-bezier(.2,.6,.2,1);
  --t:240ms;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-2);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--brand-deep);text-decoration:none;transition:color var(--t) var(--ease)}
a:hover{color:var(--brand)}
button{font:inherit;color:inherit;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
svg{display:block}
[hidden]{display:none !important}
[id]{scroll-margin-top:96px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:3px solid rgba(29,111,124,.28);
  outline-offset:2px;
  border-radius:6px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border:1px solid transparent;border-radius:var(--r-full);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform var(--t) var(--ease),background-color var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--accent-deep);color:#fff}
.btn-accent:hover{background:#9E4430;color:#fff;transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0)}
.btn-secondary{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-secondary:hover{background:var(--brand-soft);border-color:rgba(29,111,124,.4);color:var(--ink)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}

.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-full);color:var(--ink-2);
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.icon-btn:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:rgba(29,111,124,.28)}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-deep);
  border-bottom:1px solid rgba(29,111,124,.28);padding-bottom:2px;
  transition:gap var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.text-link:hover{gap:9px;color:var(--brand);border-color:var(--brand)}
.text-link svg{width:15px;height:15px}

.tag{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-full);
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--brand-soft);color:var(--brand-deep);
}
.tag-accent{background:var(--accent-soft);color:var(--accent-deep)}

/* ---------- 悬浮导航 ---------- */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:100;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  padding:0 16px;pointer-events:none;
}
.dock{
  pointer-events:auto;
  width:min(1120px,100%);height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 12px 0 16px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-full);box-shadow:var(--sh-1);
  transition:height var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.site-header.is-scrolled .dock{height:56px;box-shadow:var(--sh-2)}
.dock-logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:32px;height:32px;border-radius:10px;background:var(--brand);
  display:grid;place-items:center;flex:none;
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.2px;white-space:nowrap}
.dock-nav{display:flex;align-items:center;gap:4px;margin:0 auto}
.dock-nav a{
  display:inline-flex;align-items:center;
  padding:8px 12px;border-radius:var(--r-full);
  font-size:14px;color:var(--ink-2);
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease);
}
.dock-nav a:hover{background:#F2F7F7;color:var(--ink)}
.dock-nav a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.dock-nav a.active::before{
  content:"";width:4px;height:4px;border-radius:50%;
  background:var(--brand);margin-right:6px;flex:none;
}
.dock-actions{display:flex;align-items:center;gap:8px;flex:none}
.menu-btn{display:none}

/* 搜索面板 */
.search-panel{
  pointer-events:auto;
  width:min(1120px,100%);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--sh-2);padding:20px;
}
.search-title{font-size:13px;font-weight:600;color:var(--muted);margin-bottom:10px}
.search-field{
  display:flex;align-items:center;gap:10px;
  height:48px;padding:0 16px;border:1px solid var(--line);border-radius:var(--r-full);
  background:var(--bg);transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.search-field:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(29,111,124,.12);background:#fff}
.search-field svg{width:18px;height:18px;color:var(--muted);flex:none}
.search-field input{flex:1;border:0;background:transparent;height:100%;font-size:15px;outline:none}
.search-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.search-list a{
  display:inline-flex;align-items:center;min-height:36px;padding:6px 14px;
  border:1px solid var(--line);border-radius:var(--r-full);
  font-size:13px;color:var(--ink-2);background:#fff;
  transition:background-color var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.search-list a:hover{background:var(--brand-soft);border-color:rgba(29,111,124,.35);color:var(--brand-deep)}
.search-empty{margin-top:12px;font-size:13px;color:var(--muted)}

/* 移动端抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(14,36,43,.42);z-index:110}
.mobile-drawer{
  position:fixed;top:16px;left:16px;right:16px;z-index:120;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--sh-2);padding:20px;
  animation:drawerIn 220ms var(--ease);
}
@keyframes drawerIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-title{font-size:15px;font-weight:700;color:var(--ink)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;min-height:44px;padding:0 12px;border-radius:var(--r-md);
  font-size:15px;color:var(--ink-2);
}
.drawer-nav a:hover{background:#F2F7F7}
.drawer-nav a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.drawer-cta{margin-top:12px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:140px 0 72px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(680px 340px at 50% -40px, rgba(29,111,124,.14), rgba(29,111,124,0) 72%),
    linear-gradient(rgba(20,36,43,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20,36,43,.035) 1px, transparent 1px);
  background-size:auto,32px 32px,32px 32px;
}
.hero .container{position:relative;z-index:1}
.breadcrumb{
  display:flex;align-items:center;justify-content:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:28px;flex-wrap:wrap;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb span[aria-current]{color:var(--ink-2);font-weight:600}
.hero-inner{max-width:800px;margin:0 auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-full);
  background:#fff;border:1px solid var(--line);
  font-size:12px;font-weight:600;color:var(--brand-deep);
  box-shadow:var(--sh-1);margin-bottom:24px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:block}
.hero h1{
  font-size:clamp(32px,4.4vw,52px);
  line-height:1.18;font-weight:700;letter-spacing:-.4px;
  margin-bottom:20px;word-break:break-word;
}
.h1-cat{color:var(--ink)}
.h1-sep{color:var(--brand);font-weight:400}
.h1-brand{color:var(--brand-deep)}
.hero-sub{font-size:clamp(16px,1.4vw,18px);color:var(--ink-2);max-width:560px;margin:0 auto;line-height:1.8}
.hero-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:32px}
.hero-stats{display:flex;justify-content:center;flex-wrap:wrap;margin-top:48px}
.hero-stats li{flex:1 1 0;min-width:150px;padding:0 20px;border-left:1px solid var(--line);text-align:center}
.hero-stats li:first-child{border-left:0}
.stat-num{
  display:block;font-size:26px;font-weight:700;color:var(--brand-deep);
  line-height:1.3;font-variant-numeric:tabular-nums;
}
.stat-label{display:block;font-size:13px;color:var(--muted);line-height:1.6}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-soft{background:linear-gradient(180deg,#EFF7F7 0%,#F7FAFA 100%)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{
  font-size:clamp(26px,2.6vw,36px);line-height:1.3;margin-bottom:16px;
  padding-left:14px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  border-radius:2px;background:var(--brand);
}
.section-head p{font-size:15px;color:var(--muted);line-height:1.85;max-width:700px}

/* ---------- 交替行 ---------- */
.rows{display:flex;flex-direction:column}
.row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:44px 0;border-top:1px dashed rgba(29,111,124,.28);
}
.row:first-child{border-top:0;padding-top:0}
.row:last-child{padding-bottom:0}
.row-media{position:relative}
.row-media img{
  width:100%;aspect-ratio:1/1;object-fit:cover;
  border-radius:var(--r-xl);box-shadow:var(--sh-1);
  transition:transform 260ms var(--ease),box-shadow 260ms var(--ease);
}
.row-media:hover img{transform:scale(1.015);box-shadow:var(--sh-2)}
.row:nth-child(even) .row-media{order:2}
.row-body h3{font-size:clamp(20px,2vw,24px);line-height:1.5;margin:14px 0 16px}
.row-body p{font-size:16px;line-height:1.85;color:var(--ink-2);margin-bottom:20px;max-width:520px}

/* ---------- 服务响应表 ---------- */
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);
  -webkit-overflow-scrolling:touch;
}
.spec-table{width:100%;min-width:720px;border-collapse:collapse;font-size:14px}
.spec-table th{
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:13px;font-weight:600;text-align:left;
  padding:16px;white-space:nowrap;border-bottom:1px solid var(--line);
}
.spec-table td{
  padding:16px;border-top:1px solid var(--line);
  color:var(--ink-2);line-height:1.75;vertical-align:top;
}
.spec-table tbody tr:first-child td{border-top:0}
.spec-table tbody tr:hover td{background:#FAFDFD}
.spec-table td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}
.table-note{margin-top:16px;font-size:13px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:64px;align-items:start}
.faq-aside{position:sticky;top:100px}
.faq-aside h2{
  font-size:clamp(26px,2.6vw,34px);line-height:1.3;margin-bottom:14px;
  padding-left:14px;position:relative;
}
.faq-aside h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  border-radius:2px;background:var(--accent);
}
.faq-aside > p{font-size:15px;color:var(--muted);line-height:1.85}
.aside-card{
  margin-top:28px;padding:24px;border-radius:var(--r-xl);
  background:var(--brand-soft);border:1px solid rgba(29,111,124,.14);
}
.aside-card h3{font-size:16px;margin-bottom:10px}
.aside-card p{font-size:13px;color:var(--ink-2);line-height:1.9;margin-bottom:16px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--ink);
  cursor:pointer;list-style:none;
  transition:color var(--t) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-deep)}
.faq-item .plus{color:var(--brand);flex:none;transition:transform var(--t) var(--ease),color var(--t) var(--ease)}
.faq-item[open] .plus{transform:rotate(45deg);color:var(--accent-deep)}
.faq-item .answer{
  padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--ink-2);
  max-width:720px;
}

/* ---------- CTA 与表单 ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  background:#0E3A42;border-radius:var(--r-2xl);
  padding:48px;display:grid;grid-template-columns:6fr 4fr;gap:48px;
  color:#EAF4F4;
}
.cta-panel::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  border:1.5px dashed rgba(234,244,244,.24);border-radius:50%;pointer-events:none;
}
.cta-copy{position:relative;z-index:1}
.cta-copy h2{color:#fff;font-size:clamp(24px,2.4vw,32px);line-height:1.35;margin-bottom:20px}
.check-list{display:flex;flex-direction:column;gap:12px;margin-bottom:24px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;line-height:1.7;color:#CFE6E6}
.check-list svg{width:20px;height:20px;flex:none;margin-top:2px;color:#7FC7C9}
.trust-note{font-size:13px;color:#A9C8C8;line-height:1.9;border-top:1px solid rgba(255,255,255,.14);padding-top:18px;max-width:420px}
.form-card{
  position:relative;z-index:1;
  background:#fff;border-radius:var(--r-xl);padding:28px;
  box-shadow:0 24px 48px rgba(6,26,32,.28);
  transform:translateY(-16px);
}
.form-card h3{font-size:18px;margin-bottom:6px}
.form-card .form-hint{font-size:13px;color:var(--muted);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field .req{color:var(--accent-deep);margin-left:2px}
.field input[type="text"],
.field input[type="tel"],
.field input[type="search"],
.field select,
.field textarea{
  width:100%;height:48px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  font-size:15px;color:var(--ink-2);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),background-color var(--t) var(--ease);
}
.field select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235F737A' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:40px;
}
.field textarea{height:120px;padding:12px 14px;line-height:1.75;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(29,111,124,.12);
}
.field input.is-invalid,.field textarea.is-invalid,.field select.is-invalid{
  border-color:var(--error);background:#FEF6F6;
}
.field-error{margin-top:6px;font-size:12px;color:var(--error);line-height:1.6}
.check-row{display:flex;align-items:flex-start;gap:10px;margin:4px 0 18px}
.check-row input[type="checkbox"]{
  width:18px;height:18px;margin:4px 0 0;flex:none;accent-color:var(--brand);
}
.check-row label{font-size:13px;color:var(--ink-2);line-height:1.7;margin:0;font-weight:400}
.form-success{
  padding:14px 16px;border-radius:var(--r-md);
  background:#EBF6F1;border:1px solid rgba(46,139,109,.32);
  color:#1F6B52;font-size:14px;line-height:1.7;
}

/* ---------- 页脚 ---------- */
.footer{background:#0E3A42;color:#EAF4F4;padding:64px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{
  display:flex;align-items:center;gap:10px;margin-bottom:14px;
  font-size:20px;font-weight:700;color:#fff;
}
.footer-mark{
  width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.12);
  display:grid;place-items:center;flex:none;
}
.footer-mark svg{width:20px;height:20px}
.footer p{font-size:14px;line-height:1.9;color:#B9D5D5;max-width:280px}
.footer h4{font-size:15px;color:#fff;margin-bottom:14px;font-weight:600}
.footer ul{display:flex;flex-direction:column;gap:10px}
.footer ul a{font-size:14px;color:#CFE6E6}
.footer ul a:hover{color:var(--accent-soft);text-decoration:underline;text-underline-offset:4px}
.footer-meta{font-size:14px;line-height:1.95;color:#B9D5D5}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#A9C8C8;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .row{gap:36px}
  .faq-layout{gap:40px}
  .cta-panel{padding:40px;gap:32px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-grid > div:last-child{grid-column:1 / -1}
}

@media (max-width:960px){
  .dock-nav{display:none}
  .menu-btn{display:inline-flex}
  .section{padding:72px 0}
  .hero{padding-top:120px}
  .row{grid-template-columns:1fr;gap:24px}
  .row:nth-child(even) .row-media{order:0}
  .row-media img{aspect-ratio:16/10;max-height:360px}
  .row-body p{max-width:none}
  .faq-layout{grid-template-columns:1fr}
  .faq-aside{position:static}
  .cta-panel{grid-template-columns:1fr}
  .form-card{transform:none}
}

@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .hero{padding:112px 0 56px}
  .hero-stats{margin-top:36px}
  .hero-stats li{flex:1 1 33.333%;min-width:106px;padding:0 10px}
  .stat-num{font-size:22px}
  .cta-panel{padding:28px 24px;border-radius:var(--r-xl)}
  .form-card{padding:22px}
  .footer{padding:48px 0 20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .footer p{max-width:none}
  .footer-bottom{flex-direction:column;gap:6px}
  .faq-item summary{font-size:16px}
}

@media (max-width:520px){
  .container{padding:0 18px}
  .logo-text{font-size:14px}
  .dock{padding:0 8px 0 12px;gap:8px}
  .dock-actions{gap:6px}
  .icon-btn{width:38px;height:38px}
  .hero-actions .btn{width:100%}
  .hero-stats li{flex:1 1 100%;border-left:0;border-top:1px solid var(--line);padding:14px 0 0;margin-top:14px}
  .hero-stats li:first-child{border-top:0;margin-top:0;padding-top:0}
  .breadcrumb{justify-content:flex-start}
  .hero-inner{text-align:left}
  .hero-sub{margin:0}
  .hero-actions{justify-content:flex-start}
  .section-head h2{font-size:24px}
  .search-panel{padding:16px}
  .search-list{gap:6px}
  .mobile-drawer{left:12px;right:12px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .row-media:hover img{transform:none}
  .btn:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --brand:#1D6F7C;
  --brand-deep:#0E4C59;
  --brand-soft:#E7F2F3;
  --accent:#D96C4F;
  --accent-deep:#B8533B;
  --accent-soft:#FBEDE8;
  --ink:#14242B;
  --ink-2:#3C5159;
  --muted:#5F737A;
  --line:#DCE6E8;
  --bg:#F7FAFA;
  --surface:#FFFFFF;
  --dark:#0E3A42;
  --success:#2E8B6D;
  --warn:#B07A24;
  --error:#B84C4C;
  --r-sm:12px;
  --r-md:20px;
  --r-lg:28px;
  --r-pill:999px;
  --shadow-1:0 8px 24px rgba(20,36,43,.06);
  --shadow-2:0 18px 40px rgba(20,36,43,.12);
  --ease:cubic-bezier(.2,.6,.2,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink-2);
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3;font-weight:700}
h1{font-size:clamp(34px,4.6vw,52px);line-height:1.16}
h2{font-size:clamp(24px,2.6vw,32px)}
h3{font-size:19px;font-weight:600;line-height:1.5}
p{margin:0}
a{color:var(--brand-deep);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--accent-deep)}
img{display:block;max-width:100%}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(29,111,124,.28);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-head{max-width:720px;margin-bottom:36px}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand-deep);font-size:12px;font-weight:600}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* ---------- Dock 导航 ---------- */
.dock-wrap{
  position:fixed;top:16px;left:0;right:0;z-index:100;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  padding:0 16px;pointer-events:none;
}
.dock{
  pointer-events:auto;
  width:min(1120px,100%);
  height:64px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--shadow-1);
  display:flex;align-items:center;gap:16px;
  padding:0 12px 0 16px;
  transition:height .24s var(--ease),box-shadow .24s var(--ease);
}
.dock.is-compact{height:56px;box-shadow:var(--shadow-2)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.2px}
.brand:hover .brand-text{color:var(--brand-deep)}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.dock-nav a{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:var(--r-pill);
  font-size:14px;color:var(--ink-2);font-weight:500;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.dock-nav a:hover{background:#F2F7F7;color:var(--brand-deep)}
.dock-nav a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.dock-nav a.active::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand)}
.dock-actions{margin-left:auto;display:flex;align-items:center;gap:8px}
.icon-btn{
  position:relative;
  width:42px;height:42px;border-radius:50%;
  background:#fff;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;color:var(--ink-2);
  transition:background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{background:var(--brand-soft);border-color:rgba(29,111,124,.4);color:var(--brand-deep)}
.icon-btn:active{transform:translateY(1px)}
.icon-btn svg{width:19px;height:19px}
.badge-btn .badge{
  position:absolute;top:-2px;right:-2px;min-width:18px;height:18px;padding:0 4px;
  border-radius:var(--r-pill);background:var(--accent-deep);color:#fff;
  font-size:11px;font-weight:700;line-height:18px;text-align:center;
}
.menu-btn{display:none}

/* 站内搜索面板 */
.search-panel{
  pointer-events:auto;
  width:min(560px,100%);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-2);
  padding:12px;display:flex;gap:8px;
}
.search-panel[hidden]{display:none}
.search-panel input{
  flex:1;height:44px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;font-size:14px;color:var(--ink);
}
.search-panel input::placeholder{color:var(--muted)}
.search-panel input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(29,111,124,.12)}

/* 移动端抽屉 */
.menu-mask{
  position:fixed;inset:0;background:rgba(14,36,43,.42);
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:98;
}
.menu-mask.open{opacity:1;pointer-events:auto}
.mobile-menu{
  position:fixed;top:88px;left:16px;right:16px;z-index:99;
  background:#fff;border:1px solid var(--line);border-radius:24px;
  box-shadow:var(--shadow-2);padding:14px;
  display:grid;gap:6px;
  opacity:0;transform:translateY(-12px);pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.mobile-menu.open{opacity:1;transform:translateY(0);pointer-events:auto}
.mobile-menu a{
  display:flex;align-items:center;height:46px;padding:0 16px;border-radius:14px;
  font-size:15px;color:var(--ink-2);font-weight:500;
}
.mobile-menu a:hover{background:#F2F7F7;color:var(--brand-deep)}
.mobile-menu a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.mobile-menu .btn{margin-top:8px;height:48px;width:100%;justify-content:center}

/* 方案清单抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(14,36,43,.4);opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:110}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(420px,100%);z-index:111;
  background:#fff;border-radius:24px 0 0 24px;
  box-shadow:var(--shadow-2);padding:24px;
  display:flex;flex-direction:column;
  transform:translateX(102%);transition:transform .26s var(--ease);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-head h3{font-size:18px}
.drawer-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;color:var(--muted);font-size:14px;padding:32px 8px}
.drawer-empty svg{width:56px;height:56px;color:var(--brand);opacity:.55}
.drawer-foot{padding-top:16px;border-top:1px solid var(--line)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  border:1px solid transparent;font-size:15px;font-weight:600;
  cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--accent-deep);color:#fff}
.btn-accent:hover{background:#9C4530;color:#fff;transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--brand-soft);border-color:rgba(29,111,124,.4);color:var(--brand-deep)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;isolation:isolate;overflow:hidden;
  min-height:360px;display:flex;align-items:flex-end;
  padding:150px 0 56px;color:#fff;background:var(--dark);
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background-image:linear-gradient(102deg,rgba(14,58,66,.92) 8%,rgba(14,58,66,.62) 58%,rgba(14,58,66,.44) 100%),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(234,244,244,.75);margin-bottom:18px}
.crumb a{color:rgba(234,244,244,.92)}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.crumb span[aria-current]{color:rgba(234,244,244,.7)}
.page-hero h1{color:#fff;max-width:860px}
.page-hero .hero-sub{margin-top:18px;max-width:660px;font-size:16px;line-height:1.8;color:rgba(234,244,244,.88)}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-chips span{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid rgba(234,244,244,.34);
  font-size:12px;font-weight:600;color:#EAF4F4;background:rgba(255,255,255,.08);
}

/* ---------- 主体两栏 ---------- */
.guide-main{padding:72px 0 88px}
.guide-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:56px;align-items:start}
.lead-p{
  font-size:17px;line-height:1.95;color:var(--ink-2);
  padding:22px 26px;background:var(--surface);border:1px solid var(--line);
  border-left:4px solid var(--brand);border-radius:0 var(--r-md) var(--r-md) 0;
  box-shadow:var(--shadow-1);
}
.guide-group{margin-top:52px;scroll-margin-top:100px}
.guide-group:first-of-type{margin-top:44px}
.group-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:8px}
.group-idx{
  flex-shrink:0;width:34px;height:34px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand-deep);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;letter-spacing:.5px;margin-top:4px;
}
.group-head h2{font-size:clamp(21px,2.2vw,26px);line-height:1.35}
.group-desc{margin:6px 0 6px 48px;font-size:14px;color:var(--muted)}

.guide-item{
  display:grid;grid-template-columns:128px minmax(0,1fr);gap:20px;
  padding:20px 12px;border-bottom:1px solid var(--line);
  border-radius:var(--r-sm);
  transition:background-color .22s var(--ease);
}
.guide-item:first-of-type{border-top:1px solid var(--line)}
.guide-item:hover{background:#F2F8F8}
.guide-thumb{
  width:128px;height:96px;border-radius:var(--r-sm);overflow:hidden;
  background:linear-gradient(135deg,var(--brand-soft),#fff);flex-shrink:0;
}
.guide-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .26s var(--ease)}
.guide-item:hover .guide-thumb img{transform:scale(1.03)}
.guide-body{min-width:0}
.guide-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12px;color:var(--muted);margin-bottom:6px}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand-deep);
  font-size:12px;font-weight:600;
}
.tag-accent{background:var(--accent-soft);color:var(--accent-deep)}
.guide-title{font-size:18px;font-weight:600;line-height:1.5;color:var(--ink)}
.guide-title a{color:var(--ink)}
.guide-title a:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:4px}
.guide-sum{
  margin-top:6px;font-size:14px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.more-btn{display:flex;justify-content:center;margin-top:40px}
.load-hint{margin-top:12px;text-align:center;font-size:13px;color:var(--success);min-height:20px}

/* 侧栏 */
.side{position:sticky;top:100px;display:grid;gap:20px;align-self:start}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;
  border-radius:var(--r-pill);background:#F2F7F7;color:var(--ink-2);
  font-size:13px;transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.tag-cloud a:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-1px)}
.pick-list{display:grid;gap:14px}
.pick{
  display:grid;grid-template-columns:80px minmax(0,1fr);gap:12px;align-items:center;
  padding-bottom:14px;border-bottom:1px dashed var(--line);
}
.pick:last-child{padding-bottom:0;border-bottom:0}
.pick img{width:80px;height:60px;border-radius:10px;object-fit:cover;background:var(--brand-soft)}
.pick-title{font-size:14px;font-weight:600;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pick-title:hover{color:var(--brand-deep)}
.pick-date{font-size:12px;color:var(--muted);margin-top:4px}
.side-cta{background:var(--brand-soft);border-color:transparent}
.side-cta p{font-size:13px;color:var(--ink-2);line-height:1.7;margin-bottom:14px}
.to-top{width:100%;justify-content:center}

/* ---------- FAQ ---------- */
.faq-band{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.faq-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);gap:56px;align-items:start}
.faq-aside{position:sticky;top:100px}
.faq-aside p{margin-top:14px;font-size:14px;color:var(--muted);line-height:1.8}
.faq-contact{
  margin-top:24px;padding:22px;border-radius:var(--r-md);
  background:var(--brand-soft);
}
.faq-contact h3{font-size:15px;margin-bottom:8px}
.faq-contact p{font-size:13px;color:var(--ink-2);line-height:1.7;margin-bottom:14px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-deep)}
.faq-item summary .plus{
  flex-shrink:0;width:24px;height:24px;color:var(--brand);
  transition:transform .24s var(--ease),color .24s var(--ease);
}
.faq-item[open] summary .plus{transform:rotate(45deg);color:var(--accent-deep)}
.faq-ans{padding:0 0 20px;max-width:720px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ---------- CTA 面板 ---------- */
.need-panel{
  position:relative;overflow:hidden;
  background:var(--dark);border-radius:var(--r-lg);
  padding:52px;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;
  color:#EAF4F4;box-shadow:var(--shadow-2);
}
.need-panel::after{
  content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;
  border:1px solid rgba(234,244,244,.16);border-radius:50%;
}
.need-panel h2{color:#fff}
.need-panel .need-sub{margin-top:14px;font-size:15px;line-height:1.8;color:rgba(234,244,244,.86)}
.need-list{margin-top:24px;display:grid;gap:12px}
.need-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:rgba(234,244,244,.9)}
.need-list svg{width:18px;height:18px;flex-shrink:0;color:var(--accent);margin-top:3px}
.need-note{margin-top:22px;font-size:12px;color:rgba(234,244,244,.62)}
.form-card{
  position:relative;z-index:1;
  background:#fff;border-radius:var(--r-md);padding:26px;
  box-shadow:var(--shadow-2);
}
.form-row{display:grid;gap:14px}
.field{display:grid;gap:6px}
.field label{font-size:13px;font-weight:600;color:var(--ink)}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--ink);font-size:14px;font-family:inherit;
  padding:0 14px;height:48px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235F737A' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:40px}
.field input::placeholder,.field textarea::placeholder{color:#9DB0B5}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(29,111,124,.12)}
.field input:disabled,.field textarea:disabled{background:#F1F5F5;color:var(--muted);cursor:not-allowed}
.check-row{display:flex;align-items:flex-start;gap:8px;font-size:12px;color:var(--muted);line-height:1.6}
.check-row input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);flex-shrink:0}
.form-ok{
  margin-top:12px;padding:12px 14px;border-radius:var(--r-sm);
  background:#EAF6F0;color:#1F6B52;font-size:13px;line-height:1.6;
}
.form-ok[hidden]{display:none}

/* ---------- 页脚 ---------- */
.footer{background:var(--dark);color:#EAF4F4;padding:64px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-mark{width:32px;height:32px;border-radius:10px;background:rgba(234,244,244,.14);display:inline-flex;align-items:center;justify-content:center}
.footer-mark svg{width:20px;height:20px}
.footer-brand span{font-size:20px;font-weight:700;color:#fff}
.footer p{font-size:14px;line-height:1.8;color:rgba(234,244,244,.78);max-width:280px}
.footer h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600}
.footer ul{display:grid;gap:10px}
.footer ul a{font-size:14px;color:rgba(234,244,244,.8)}
.footer ul a:hover{color:var(--accent-soft);text-decoration:underline;text-underline-offset:4px}
.footer-meta{font-size:13px;line-height:2;color:rgba(234,244,244,.76)}
.footer-bottom{
  margin-top:48px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:rgba(234,244,244,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .guide-layout{gap:40px}
  .need-panel{padding:40px;gap:32px}
}
@media (max-width:1024px){
  .guide-layout{grid-template-columns:1fr;gap:44px}
  .side{position:static;order:-1;grid-template-columns:1fr 1fr}
  .side-cta{grid-column:1 / -1}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .need-panel{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
}
@media (max-width:960px){
  .dock-nav{display:none}
  .menu-btn{display:inline-flex}
  .dock-actions .btn-primary{display:none}
  .dock{height:60px}
  .dock.is-compact{height:56px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .page-hero{padding:130px 0 44px;min-height:300px}
  .guide-main{padding:56px 0 64px}
  .lead-p{font-size:16px;padding:18px 20px}
  .group-desc{margin-left:0}
  .guide-item{grid-template-columns:112px minmax(0,1fr);gap:16px;padding:18px 8px}
  .guide-thumb{width:112px;height:84px}
  .side{grid-template-columns:1fr}
  .need-panel{padding:28px;border-radius:22px}
  .form-card{padding:20px}
  .section{padding:56px 0}
  .footer{padding:48px 0 20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer p{max-width:none}
  .faq-item summary{font-size:16px}
  .drawer{width:100%;border-radius:0}
}
@media (max-width:520px){
  .brand-text{font-size:15px}
  .guide-item{grid-template-columns:96px minmax(0,1fr);gap:14px}
  .guide-thumb{width:96px;height:72px}
  .guide-title{font-size:16px}
  .guide-sum{font-size:13px}
  .hero-chips span{font-size:11px;height:28px}
  .btn{height:46px;padding:0 20px;font-size:14px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}