/* roulang page: index */
:root{
  --orange:#FF6A3D;
  --orange-dark:#E85A2E;
  --orange-soft:#FFE9E0;
  --orange-ink:#C2410C;
  --teal:#18B7A6;
  --teal-soft:#DDF7F3;
  --teal-ink:#0F766E;
  --ink:#111318;
  --ink-2:#1B1F24;
  --paper:#F6F3EE;
  --white:#FFFFFF;
  --light:#FBF9F5;
  --text:#1A1A1A;
  --text-2:#5C5A55;
  --text-3:#8A857D;
  --border:#E6E0D6;
  --ok:#1F9D6A;
  --warn:#D97706;
  --err:#D14343;
  --r-card:16px;
  --r-btn:12px;
  --r-lg:20px;
  --shadow-s:0 8px 24px rgba(17,19,24,.06);
  --shadow-m:0 14px 32px rgba(17,19,24,.10);
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:28px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:3px solid rgba(24,183,166,.35);outline-offset:2px;border-radius:6px}
::selection{background:var(--orange-soft);color:var(--orange-ink)}

/* ---------- 容器与栅格 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.grid{display:grid;gap:var(--gap)}
.g-12{grid-template-columns:repeat(12,1fr)}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--orange);color:var(--ink)}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(232,90,46,.28)}
.btn-primary:active{transform:translateY(0) scale(.98);box-shadow:none}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
.btn-ghost{background:var(--light);color:var(--ink);border-color:var(--border)}
.btn-ghost:hover{background:#fff;border-color:var(--orange);color:var(--orange-ink);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:15px;border-radius:10px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;border-radius:999px;padding:4px 10px;font-size:12px;line-height:18px;font-weight:600}
.badge-cat{background:var(--orange-soft);color:var(--orange-ink)}
.badge-state{background:var(--teal-soft);color:var(--teal-ink)}
.seal{
  display:inline-block;border:1px solid var(--orange);
  color:var(--orange-ink);background:#fff;
  border-radius:999px;padding:6px 16px;font-size:13px;font-weight:600;letter-spacing:.06em;
}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px}
.nav{display:flex;align-items:center;gap:26px}
.nav-left{flex:1 1 0;justify-content:flex-start}
.nav-right{flex:1 1 0;justify-content:flex-end}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0;transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--orange);transition:width .24s ease}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{width:100%}
.brand{display:flex;align-items:baseline;gap:0;font-family:var(--font-serif);font-weight:700;font-size:20px;color:var(--ink);letter-spacing:.01em;white-space:nowrap;padding:6px 10px;border-radius:10px;transition:color .2s ease}
.brand:hover{color:var(--orange-ink)}
.brand-top{color:var(--ink)}
.brand-bottom{color:var(--orange-ink)}
.menu-toggle{display:none;align-items:center;gap:8px;height:40px;padding:0 12px;border:1px solid var(--border);border-radius:10px;background:var(--light);color:var(--ink);font-size:14px;font-weight:600}
.menu-toggle i{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.menu-toggle i::before,.menu-toggle i::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px}
.menu-toggle i::before{top:-5px}
.menu-toggle i::after{top:5px}

/* 移动端抽屉 */
.drawer{position:fixed;inset:76px 0 0 0;background:var(--paper);z-index:55;padding:24px 0;transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .24s ease,transform .24s ease,visibility .24s}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-inner{display:flex;flex-direction:column;gap:8px}
.drawer-link{font-family:var(--font-serif);font-size:22px;font-weight:700;color:var(--ink);padding:16px 4px;border-bottom:1px solid var(--border)}
.drawer-link.is-active{color:var(--orange-ink)}
.drawer-cta{margin-top:20px}
.drawer-note{font-size:13px;color:var(--text-3);padding:4px}

/* ---------- Hero ---------- */
.hero{padding:72px 0 80px;background:
  radial-gradient(120% 90% at 88% 0%,rgba(24,183,166,.10),transparent 60%),
  radial-gradient(90% 70% at 4% 10%,rgba(255,106,61,.10),transparent 58%),
  var(--paper);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy h1{font-family:var(--font-serif);font-size:40px;line-height:48px;font-weight:700;margin:18px 0 16px;color:var(--ink)}
.hero-sub{font-size:18px;line-height:30px;color:var(--text-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:16px;margin-top:34px}
.hero-stats li{
  flex:1 1 140px;background:#fff;border:1px solid var(--border);border-radius:14px;
  padding:14px 16px;box-shadow:var(--shadow-s);
}
.hero-stats strong{display:block;font-family:var(--font-serif);font-size:22px;color:var(--orange-ink);line-height:32px}
.hero-stats span{font-size:13px;color:var(--text-3)}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);border:2px solid var(--border);box-shadow:var(--shadow-m)}
.hero-media::after{
  content:"";position:absolute;inset:auto -14px -14px auto;width:88px;height:88px;
  border-right:2px solid rgba(255,106,61,.5);border-bottom:2px solid rgba(255,106,61,.5);
  border-radius:0 0 26px 0;pointer-events:none;
}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--light);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:760px;margin-bottom:40px}
.section-title{font-family:var(--font-serif);font-size:30px;line-height:38px;font-weight:700;color:var(--ink);position:relative;padding-top:18px}
.section-title::before{content:"";position:absolute;left:0;top:0;width:44px;height:3px;background:var(--orange);border-radius:2px}
.section-desc{margin-top:14px;color:var(--text-2)}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.link-more{color:var(--teal-ink);font-weight:600;font-size:15px;border-bottom:1px dashed var(--teal)}
.link-more:hover{color:var(--orange-ink);border-color:var(--orange)}

/* ---------- 线路说明 ---------- */
.route-list{display:flex;flex-direction:column;gap:18px}
.route-item{
  display:flex;gap:18px;align-items:flex-start;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--shadow-s);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.route-item:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:var(--shadow-m)}
.route-num{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;background:var(--orange-soft);color:var(--orange-ink);
  font-family:var(--font-serif);font-weight:700;font-size:18px;display:flex;align-items:center;justify-content:center;
}
.route-item h3{font-size:19px;line-height:28px;font-weight:600;color:var(--ink)}
.route-item p{font-size:15px;line-height:26px;color:var(--text-2);margin-top:6px}
.route-item .badge{margin-top:10px}

/* ---------- 三步上手 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:28px 24px 26px;box-shadow:var(--shadow-s);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.step:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:var(--shadow-m)}
.step:not(:last-child)::after{
  content:"";position:absolute;top:52px;right:-24px;width:24px;height:2px;
  background:repeating-linear-gradient(90deg,var(--border) 0 6px,transparent 6px 12px);
}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:50%;
  background:var(--orange);color:var(--ink);font-family:var(--font-serif);font-size:17px;font-weight:700;
  box-shadow:0 8px 18px rgba(255,106,61,.32);
}
.step h3{font-size:22px;line-height:30px;font-weight:600;margin:18px 0 10px;color:var(--ink)}
.step p{font-size:15px;line-height:27px;color:var(--text-2)}
.step-link{display:inline-block;margin-top:16px;font-size:14px;font-weight:600;color:var(--teal-ink)}
.step-link:hover{color:var(--orange-ink)}

/* ---------- 最新信息列表 ---------- */
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.news-side{display:flex;flex-direction:column;gap:20px}
.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow-s);overflow:hidden;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:var(--shadow-m)}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.card-body{padding:22px 24px 24px}
.card-title{font-size:20px;line-height:30px;font-weight:600;color:var(--ink);margin-top:12px}
.card-title a:hover{color:var(--orange-ink)}
.card-summary{margin-top:10px;font-size:14px;line-height:26px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.meta-time{font-size:12px;line-height:18px;color:var(--text-3)}
.card-h{display:grid;grid-template-columns:220px 1fr}
.card-h .card-media img{height:100%;min-height:100%;aspect-ratio:auto;object-fit:cover}
.card-sm{grid-template-columns:132px 1fr}
.card-sm .card-body{padding:16px 18px}
.card-sm .card-title{font-size:17px;line-height:26px;margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.read-more{display:inline-block;margin-top:14px;font-size:14px;font-weight:600;color:var(--teal-ink)}
.card:hover .read-more{color:var(--orange-ink)}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:#fff;border:1px dashed var(--border);border-radius:var(--r-card);padding:32px;text-align:center;
}
.empty-state .empty-icon{width:56px;height:56px;border-radius:50%;background:var(--orange-soft);color:var(--orange-ink);
  display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;font-family:var(--font-serif)}
.empty-state h3{font-size:18px;color:var(--ink);font-weight:600}
.empty-state p{font-size:14px;color:var(--text-2);max-width:36em}
.skeleton{background:linear-gradient(90deg,#EFEBE4 25%,#F7F4EF 37%,#EFEBE4 63%);background-size:400% 100%;
  animation:sk 1.4s ease infinite;border-radius:12px}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ---------- 使用反馈 ---------- */
.case-block{display:grid;grid-template-columns:6fr 6fr;gap:40px;align-items:center;margin-bottom:56px}
.case-block:last-child{margin-bottom:0}
.case-block.reverse .case-media{order:2}
.case-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);border:1px solid var(--border);box-shadow:var(--shadow-s)}
.quote{border-left:4px solid var(--teal);background:var(--light);border-radius:0 14px 14px 0;padding:18px 22px;color:var(--text-2);font-size:15px;line-height:28px}
.case-body h3{font-family:var(--font-serif);font-size:24px;line-height:34px;color:var(--ink);margin-bottom:14px}
.case-body p{color:var(--text-2);font-size:15px;line-height:28px;margin-bottom:16px}
.case-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}
.case-stats span{background:#fff;border:1px solid var(--border);border-radius:999px;padding:6px 14px;font-size:13px;color:var(--text-2)}
.case-stats span b{color:var(--orange-ink);font-family:var(--font-serif);font-size:15px;margin-right:2px}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start}
.faq-aside .section-title{padding-top:18px}
.faq-aside p{color:var(--text-2);margin-top:14px}
.faq-contact{margin-top:22px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--shadow-s)}
.faq-contact h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:8px}
.faq-contact p{font-size:14px;color:var(--text-2);line-height:26px}
.faq-contact .btn{margin-top:14px}
.faq-item{border-bottom:1px solid var(--border);background:transparent}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;font-size:18px;line-height:28px;font-weight:600;color:var(--text-2);cursor:pointer;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:30px;height:30px;border-radius:50%;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--orange-ink);font-size:18px;font-weight:700;
  transition:transform .24s ease,background-color .24s ease;
}
.faq-item[open] summary{color:var(--ink)}
.faq-item[open] summary::after{content:"−";background:var(--orange-soft);border-color:var(--orange-soft)}
.faq-item p{padding:0 4px 22px;font-size:15px;line-height:28px;color:var(--text-2);background:var(--light);border-radius:0 0 12px 12px}
.faq-item{transition:background-color .24s ease}
.faq-item[open]{background:var(--light);border-radius:12px}

/* ---------- CTA 表单 ---------- */
.cta-section{background:var(--ink);color:var(--paper);padding:88px 0}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start}
.cta-copy h2{font-family:var(--font-serif);font-size:30px;line-height:38px;color:#fff;padding-top:18px;position:relative}
.cta-copy h2::before{content:"";position:absolute;left:0;top:0;width:44px;height:3px;background:var(--orange)}
.cta-copy p{color:#A8A29A;margin-top:16px;font-size:15px;line-height:28px}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#D9D4CC}
.cta-points li::before{content:"";flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:2px;background:var(--teal)}
.cta-card{background:var(--ink-2);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-card);padding:28px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1 / -1}
.field label{font-size:14px;line-height:22px;color:#D9D4CC;font-weight:500}
.field input,.field select,.field textarea{
  height:48px;border-radius:12px;border:1px solid rgba(255,255,255,.14);background:#15181D;color:#F6F3EE;
  padding:0 14px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:26px;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8A857D 50%),linear-gradient(135deg,#8A857D 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input::placeholder,.field textarea::placeholder{color:#7C7770}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(24,183,166,.28)
}
.field.is-error input,.field.is-error select,.field.is-error textarea{border-color:var(--err)}
.field.is-error label{color:#F19B9B}
.field.is-success input,.field.is-success select,.field.is-success textarea{border-color:var(--ok)}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;line-height:22px;color:#A8A29A}
.check-row input{width:18px;height:18px;height:18px;margin-top:2px;accent-color:var(--orange);flex:0 0 auto}
.form-msg{display:none;font-size:14px;line-height:24px;border-radius:10px;padding:10px 14px;margin-top:4px}
.form-msg.is-error{display:block;background:rgba(209,67,67,.14);color:#F19B9B;border:1px solid rgba(209,67,67,.4)}
.form-msg.is-success{display:block;background:rgba(31,157,106,.14);color:#8FDCBB;border:1px solid rgba(31,157,106,.4)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:4fr 3fr 3fr 2fr;gap:32px;padding-bottom:44px}
.footer-brand .brand{color:var(--paper);font-size:22px;padding:0}
.footer-brand .brand-bottom{color:var(--orange)}
.footer-brand p{margin-top:14px;font-size:14px;line-height:26px;color:#A8A29A;max-width:30em}
.footer-col h4{font-size:15px;font-weight:600;color:var(--paper);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#A8A29A;transition:color .2s ease}
.footer-links a:hover{color:var(--orange)}
.footer-meta{font-size:14px;line-height:26px;color:#A8A29A}
.footer-meta span{display:block}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{font-size:13px;color:#8A857D}
.footer-bottom a{color:#A8A29A}
.footer-bottom a:hover{color:var(--orange)}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{max-width:1140px}
}
@media (max-width:992px){
  .menu-toggle{display:inline-flex}
  .nav-left{display:none}
  .nav-right .nav-link{display:none}
  .nav-right{flex:0 0 auto}
  .header-inner{gap:10px}
  .brand{font-size:18px}
  .hero{padding:48px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-copy h1{font-size:34px;line-height:44px}
  .g-12{grid-template-columns:repeat(6,1fr)}
  .col-4,.col-5,.col-7,.col-8{grid-column:1 / -1}
  .news-grid{grid-template-columns:1fr}
  .faq-grid,.cta-grid{grid-template-columns:1fr;gap:32px}
  .case-block{grid-template-columns:1fr;gap:24px}
  .case-block.reverse .case-media{order:0}
  .steps{grid-template-columns:1fr}
  .step:not(:last-child)::after{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .cta-section{padding:56px 0}
  .hero-copy h1{font-size:30px;line-height:38px}
  .section-title{font-size:24px;line-height:34px}
  .cta-copy h2{font-size:24px;line-height:34px}
  .hero-actions .btn{flex:1 1 100%}
  .card-h,.card-sm{grid-template-columns:1fr}
  .card-h .card-media img,.card-sm .card-media img{aspect-ratio:16/9;height:auto;min-height:0}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .brand{flex-direction:column;align-items:flex-start;line-height:1.15;font-size:17px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .drawer{inset:68px 0 0 0}
  .hero-stats li{flex:1 1 100%}
  .step{padding:22px 18px}
  .cta-card{padding:20px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: article */
:root{
  --orange:#FF6A3D;
  --orange-deep:#E85A2E;
  --orange-soft:#FFE9E0;
  --orange-text:#C2410C;
  --teal:#18B7A6;
  --teal-soft:#DDF7F3;
  --teal-text:#0F766E;
  --ink:#111318;
  --paper:#F6F3EE;
  --paper-2:#FBF9F5;
  --card:#FFFFFF;
  --text:#1A1A1A;
  --text-2:#5C5A55;
  --text-3:#8A857D;
  --line:#E6E0D6;
  --line-dark:rgba(255,255,255,.08);
  --success:#1F9D6A;
  --warn:#D97706;
  --danger:#D14343;
  --radius:16px;
  --radius-sm:12px;
  --radius-lg:20px;
  --shadow-sm:0 8px 24px rgba(17,19,24,.06);
  --shadow-md:0 14px 32px rgba(17,19,24,.10);
  --font-serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--teal)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);color:var(--ink);font-weight:700;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(24,183,166,.35);border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-bar{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:76px;
}
.nav{display:flex;align-items:center;gap:26px}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end;gap:18px}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--orange);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  line-height:1.12;
  justify-self:center;
  text-align:center;
}
.brand-top{
  font-family:var(--font-serif);
  font-size:22px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:1px;
}
.brand-bottom{
  font-size:12px;
  letter-spacing:3px;
  color:var(--orange);
  font-weight:600;
  margin-top:2px;
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  align-items:center;
  justify-content:center;
  font-size:17px;
}
.nav-toggle:hover{border-color:var(--orange);color:var(--orange)}
.mobile-cta{display:none}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-sm);
  font-size:16px;
  font-weight:600;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .18s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--orange);color:#181008}
.btn-primary:hover{background:var(--orange-deep);color:#181008;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:var(--paper-2);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:#fff;border-color:var(--orange);color:var(--orange-text)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn:disabled,.btn.is-disabled{opacity:.55;cursor:not-allowed;transform:none}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  border-radius:999px;
  padding:4px 10px;
  font-size:12px;
  font-weight:600;
  line-height:1.5;
}
.badge-cat{background:var(--orange-soft);color:var(--orange-text)}
.badge-status{background:var(--teal-soft);color:var(--teal-text)}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--text-2)}

/* ============ 移动抽屉 ============ */
.nav-drawer{
  position:fixed;
  inset:0;
  z-index:80;
  background:var(--paper-2);
  padding:20px 20px 32px;
  display:flex;
  flex-direction:column;
  gap:20px;
  transform:translateY(-100%);
  opacity:0;
  visibility:hidden;
  transition:transform .3s ease,opacity .3s ease,visibility .3s ease;
}
.nav-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;
  font-size:18px;color:var(--ink);display:flex;align-items:center;justify-content:center;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:600;
  color:var(--ink);
  padding:14px 12px;
  border-radius:12px;
  border-bottom:1px solid var(--line);
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:#fff;color:var(--orange-text)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.drawer-foot p{font-size:13px;color:var(--text-3);line-height:1.7}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--paper);border-bottom:1px solid var(--line)}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:18px 0;
  font-size:13px;
  color:var(--text-3);
}
.crumb a:hover{color:var(--orange)}
.crumb .sep{color:#C9C2B6}
.crumb .current{color:var(--text-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头 ============ */
.article-head{padding:40px 0 8px;background:linear-gradient(180deg,#FFFFFF 0%,#F9F6F1 100%)}
.article-head .eyebrow{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px}
.article-head h1{
  font-size:40px;
  line-height:1.28;
  margin-bottom:18px;
  max-width:900px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px 22px;
  font-size:12px;
  line-height:1.8;
  color:var(--text-3);
  padding-bottom:26px;
}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta i{color:var(--teal)}
.summary-card{
  max-width:900px;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-left:4px solid var(--orange);
  border-radius:0 var(--radius) var(--radius) 0;
  padding:20px 24px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
  margin-bottom:20px;
}
.summary-card strong{color:var(--ink);font-weight:600}

/* ============ 正文布局 ============ */
.article-wrap{padding:48px 0 88px}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:24px;
  align-items:start;
}
.article-main{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  padding:40px 44px;
}
.prose{max-width:760px;font-size:17px;line-height:1.85;color:var(--text);overflow-wrap:break-word}
.prose > *:first-child{margin-top:0}
.prose h2{
  font-size:24px;
  line-height:1.4;
  margin:2em 0 .8em;
  padding-left:14px;
  border-left:4px solid var(--orange);
}
.prose h3{font-size:20px;line-height:1.5;margin:1.7em 0 .7em;color:var(--ink)}
.prose h4{font-size:17px;line-height:1.6;margin:1.4em 0 .6em;color:var(--ink)}
.prose p{margin:0 0 1.2em}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.35em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin:.45em 0}
.prose li::marker{color:var(--orange)}
.prose blockquote{
  margin:1.5em 0;
  padding:16px 20px;
  background:var(--paper-2);
  border-left:4px solid var(--teal);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-2);
  font-size:16px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--radius);margin:1.6em auto;width:100%;height:auto}
.prose figure{margin:1.6em 0}
.prose figcaption{font-size:13px;line-height:1.7;color:var(--text-3);text-align:center;margin-top:10px}
.prose a{color:var(--teal-text);border-bottom:1px solid rgba(24,183,166,.4)}
.prose a:hover{color:var(--orange)}
.prose table{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
  margin:1.4em 0;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  overflow:hidden;
}
.prose thead{background:var(--paper-2)}
.prose th,.prose td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.prose th{font-weight:600;color:var(--ink);font-size:14px}
.prose tr:last-child td{border-bottom:none}
.prose hr{border:none;border-top:1px solid var(--line);margin:2.2em 0}
.prose code{background:var(--paper-2);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14px}

/* ============ 侧栏 ============ */
.article-side{display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  padding:24px;
}
.side-card h3{font-size:18px;line-height:1.5;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--orange);font-size:15px}
.side-list{display:flex;flex-direction:column;gap:12px}
.side-list a{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  line-height:1.7;
  color:var(--text-2);
  padding:10px 12px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  background:var(--paper-2);
  transition:all .2s ease;
}
.side-list a:hover{background:#fff;border-color:var(--orange);color:var(--ink);transform:translateX(2px)}
.side-list a i{color:var(--teal);margin-top:4px;font-size:12px}
.side-note{font-size:13px;line-height:1.8;color:var(--text-3)}
.side-dark{background:var(--ink);border-color:var(--ink);color:#F6F3EE}
.side-dark h3{color:#F6F3EE}
.side-dark h3 i{color:var(--orange)}
.side-dark .side-note{color:#A8A29A}
.side-dark .side-list a{background:rgba(255,255,255,.05);border-color:transparent;color:#E7E3DC}
.side-dark .side-list a:hover{background:rgba(255,255,255,.1);border-color:rgba(255,106,61,.5);color:#fff}
.side-dark .side-list a i{color:var(--orange)}
.side-quote{
  font-family:var(--font-serif);
  font-size:17px;
  line-height:1.7;
  color:var(--ink);
  margin-bottom:12px;
}

/* ============ 空态 ============ */
.empty-state{
  min-height:240px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:12px;
  text-align:center;
  padding:40px 20px;
}
.empty-icon{
  width:64px;height:64px;border-radius:50%;
  background:var(--orange-soft);color:var(--orange-text);
  display:flex;align-items:center;justify-content:center;font-size:24px;
}
.empty-state h3{font-size:20px;color:var(--ink)}
.empty-state p{font-size:14px;color:var(--text-2);max-width:420px;line-height:1.8}

/* ============ 板块通用 ============ */
.section{padding:88px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:30px;line-height:1.35;margin-bottom:16px}
.section-head h2::after{content:"";display:block;width:56px;height:3px;border-radius:3px;background:var(--orange);margin-top:16px}
.section-head p{color:var(--text-2);font-size:16px;line-height:1.85}
.section-alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ============ 相关推荐 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:var(--shadow-md)}
.card-cover{aspect-ratio:16/9;overflow:hidden;background:var(--paper-2)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-cover img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.5;font-family:var(--font-sans);font-weight:600;color:var(--ink)}
.card-body p{font-size:14px;line-height:1.75;color:var(--text-2)}
.card-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-top:auto;
  padding-top:12px;
  border-top:1px dashed var(--line);
  font-size:12px;
  color:var(--text-3);
}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  padding:20px 4px;
  font-size:18px;
  line-height:1.6;
  font-weight:600;
  color:var(--text-2);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .icon{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--orange);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;
  margin-top:4px;
  transition:all .2s ease;
}
.faq-item summary:hover{color:var(--ink)}
.faq-item[open] summary{color:var(--ink)}
.faq-item[open] summary .icon{background:var(--orange);border-color:var(--orange);color:#fff}
.faq-item .faq-answer{
  background:var(--paper-2);
  border-radius:var(--radius-sm);
  padding:16px 20px;
  margin:0 0 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}
.faq-aside{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm)}
.faq-aside h3{font-size:20px;line-height:1.5;margin-bottom:12px}
.faq-aside p{font-size:15px;line-height:1.85;color:var(--text-2);margin-bottom:20px}
.faq-aside .badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}

/* ============ CTA ============ */
.cta-band{background:var(--ink);color:#F6F3EE;padding:88px 0}
.cta-inner{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:start}
.cta-copy h2{color:#F6F3EE;font-size:30px;line-height:1.35;margin-bottom:16px}
.cta-copy h2::after{content:"";display:block;width:56px;height:3px;border-radius:3px;background:var(--orange);margin-top:16px}
.cta-copy p{color:#A8A29A;font-size:16px;line-height:1.85;margin-bottom:22px}
.cta-points{display:flex;flex-direction:column;gap:10px}
.cta-points span{display:flex;align-items:center;gap:10px;font-size:14px;color:#E7E3DC}
.cta-points i{color:var(--teal)}
.form-card{
  background:#1B1F24;
  border:1px solid var(--line-dark);
  border-radius:var(--radius);
  padding:32px;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font-size:14px;line-height:1.6;color:#D9D4CC}
.field input,.field select,.field textarea{
  height:48px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
  color:#F6F3EE;
  padding:0 14px;
  font-size:15px;
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#8A857D}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--teal);
  box-shadow:0 0 0 3px rgba(24,183,166,.35);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger)}
.field .err{font-size:12px;color:#F08A8A;display:none}
.field.has-error .err{display:block}
.agree{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:#A8A29A;line-height:1.7;margin:6px 0 18px}
.agree input{width:16px;height:16px;margin-top:3px;accent-color:var(--orange)}
.form-msg{display:none;font-size:14px;line-height:1.7;border-radius:var(--radius-sm);padding:12px 14px;margin-top:14px}
.form-msg.is-success{display:block;background:rgba(31,157,106,.12);border:1px solid rgba(31,157,106,.5);color:#8FE3BE}
.form-msg.is-error{display:block;background:rgba(209,67,67,.12);border:1px solid rgba(209,67,67,.5);color:#F0A0A0}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#F6F3EE;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2.6fr) minmax(0,2.6fr) minmax(0,2.8fr);gap:32px}
.footer-brand .brand{align-items:flex-start;text-align:left;margin-bottom:16px}
.footer-brand .brand-top{color:#F6F3EE}
.footer-brand p{font-size:14px;line-height:1.85;color:#A8A29A}
.footer-col h4{font-size:15px;color:#F6F3EE;margin-bottom:16px;font-family:var(--font-sans);font-weight:600;letter-spacing:.5px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#A8A29A}
.footer-links a:hover{color:var(--orange)}
.footer-meta{display:flex;flex-direction:column;gap:10px;font-size:14px;color:#A8A29A}
.footer-bottom{
  margin-top:40px;
  padding-top:22px;
  border-top:1px solid var(--line-dark);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:#8A857D;
}

/* ============ 返回入口 ============ */
.back-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:28px;padding-top:22px;border-top:1px dashed var(--line)}

/* ============ 图片加载失败 ============ */
.img-fallback{background:linear-gradient(135deg,#F0EBE3,#E4DED3)}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .container{max-width:1140px}
  .article-head h1{font-size:36px}
}
@media (max-width:992px){
  .nav-left,.nav-right .nav-link{display:none}
  .nav-bar{grid-template-columns:auto 1fr auto;height:66px}
  .nav-toggle{display:inline-flex}
  .brand-top{font-size:19px}
  .brand-bottom{font-size:11px;letter-spacing:2px}
  .mobile-cta{display:inline-flex}
  .article-grid{grid-template-columns:1fr}
  .article-side{position:static}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .section{padding:72px 0}
  .cta-band{padding:72px 0}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .article-head{padding:28px 0 0}
  .article-head h1{font-size:30px;line-height:1.38}
  .article-main{padding:28px 22px}
  .prose{font-size:17px;line-height:1.85}
  .prose h2{font-size:21px}
  .prose h3{font-size:19px}
  .section{padding:56px 0}
  .section-head h2{font-size:24px}
  .section-head{margin-bottom:28px}
  .related-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .form-card{padding:22px}
  .cta-copy h2{font-size:24px}
  .crumb .current{max-width:240px}
  .btn{width:100%}
  .btn-sm{width:auto}
  .back-row .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .brand-top{font-size:17px}
  .brand-bottom{font-size:10px;letter-spacing:1.5px}
  .article-head h1{font-size:26px}
  .article-meta{gap:6px 14px}
  .summary-card{padding:16px 18px;font-size:14px}
  .footer-grid{grid-template-columns:1fr}
  .faq-item summary{font-size:16px;padding:16px 2px}
  .side-card{padding:20px}
}

/* roulang page: category1 */
/* ===================== 设计变量 ===================== */
:root{
  --orange:#FF6A3D;
  --orange-deep:#E85A2E;
  --orange-soft:#FFE9E0;
  --orange-text:#C2410C;
  --teal:#18B7A6;
  --teal-soft:#DDF7F3;
  --teal-text:#0F766E;
  --ink:#111318;
  --ink-2:#1B1F24;
  --paper:#F6F3EE;
  --card:#FFFFFF;
  --soft:#FBF9F5;
  --text:#1A1A1A;
  --muted:#5C5A55;
  --weak:#8A857D;
  --line:#E6E0D6;
  --line-dark:rgba(255,255,255,.08);
  --success:#1F9D6A;
  --warning:#D97706;
  --error:#D14343;
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --sh-1:0 8px 24px rgba(17,19,24,.06);
  --sh-2:0 14px 32px rgba(17,19,24,.10);
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
}
/* ===================== 基础 reset ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;font-family:var(--serif);color:var(--ink);line-height:1.3;font-weight:700}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(24,183,166,.35);border-radius:8px
}
/* ===================== 容器与板块 ===================== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section.section--tight{padding:64px 0}
.section--soft{background:var(--soft)}
.section--paper{background:var(--paper)}
.section-head{margin-bottom:36px;max-width:760px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--orange-text);
  background:var(--orange-soft);border-radius:999px;padding:5px 12px;margin-bottom:14px;font-weight:700;
}
.section-head h2{font-size:30px;line-height:1.32;position:relative;padding-bottom:16px;margin-bottom:16px}
.section-head h2::after{
  content:"";position:absolute;left:0;bottom:0;width:56px;height:3px;border-radius:3px;
  background:var(--orange);
}
.section-head p{color:var(--muted);font-size:16px}
.h3{font-size:22px;line-height:1.4;font-weight:600;font-family:var(--serif);color:var(--ink);margin:0 0 12px}
/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-md);
  font-size:16px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;transition:transform .16s ease,background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn i{font-size:14px}
.btn-primary{background:var(--orange);color:var(--ink);box-shadow:0 6px 16px rgba(255,106,61,.28)}
.btn-primary:hover{background:var(--orange-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{border-color:var(--teal);color:var(--teal-text);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0) scale(.98)}
.btn-ghost{background:var(--soft);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:#fff;border-color:var(--orange);color:var(--orange-text)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--orange-soft);color:var(--orange-text);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.55;cursor:not-allowed;transform:none}
/* ===================== 标签与徽章 ===================== */
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 10px;
  font-size:12px;font-weight:600;line-height:1.5;
}
.badge-cat{background:var(--orange-soft);color:var(--orange-text)}
.badge-ok{background:var(--teal-soft);color:var(--teal-text)}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--muted)}
.stamp{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.12em;
  color:var(--orange-text);background:var(--orange-soft);
  border:1px dashed rgba(194,65,12,.35);
  border-radius:8px;padding:5px 12px;margin-bottom:18px;
}
/* ===================== 头部与导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:70;background:#fff;border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:16px;height:76px}
.nav{display:flex;align-items:center;gap:4px;flex:1 1 0;min-width:0}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 12px;border-radius:var(--r-sm);
  font-size:15px;color:var(--muted);white-space:nowrap;
}
.nav-link:hover{color:var(--teal-text);background:var(--soft)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;background:var(--orange);
}
.brand{
  display:inline-flex;align-items:baseline;column-gap:.34em;flex:0 0 auto;
  font-family:var(--serif);font-weight:700;font-size:20px;line-height:1.2;
  color:var(--ink);letter-spacing:.01em;padding:4px 8px;border-radius:var(--r-sm);
}
.brand:hover{color:var(--orange-text)}
.brand .brand-bottom{color:var(--orange)}
.header-right{display:flex;align-items:center;gap:12px;flex:1 1 0;justify-content:flex-end}
.menu-toggle{
  display:none;align-items:center;justify-content:center;width:42px;height:42px;
  border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;color:var(--ink);
}
.menu-toggle:hover{border-color:var(--orange);color:var(--orange-text)}
/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  display:flex;flex-direction:column;padding:18px 24px 28px;
  transform:translateY(-102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0)}
body.drawer-open{overflow:hidden}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close:hover{border-color:var(--orange);color:var(--orange-text)}
.drawer-nav{margin-top:22px;display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  font-family:var(--serif);font-size:20px;font-weight:600;color:var(--ink);
  padding:14px 4px;border-bottom:1px solid var(--line);
}
.drawer-nav a:hover{color:var(--orange-text)}
.drawer-nav a span.tagline{font-family:var(--sans);font-size:12px;font-weight:400;color:var(--weak)}
.drawer-cta{margin-top:auto;padding-top:26px;display:flex;flex-direction:column;gap:12px}
.drawer-note{margin-top:16px;font-size:13px;color:var(--weak)}
/* ===================== 页面 Hero ===================== */
.page-hero{
  position:relative;background:#fff;border-bottom:1px solid var(--line);
  padding:64px 0 72px;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,61,.12),rgba(255,106,61,0) 68%);
}
.page-hero::after{
  content:"";position:absolute;left:-120px;bottom:-160px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(24,183,166,.12),rgba(24,183,166,0) 70%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy h1{font-size:40px;line-height:1.26;margin-bottom:18px;letter-spacing:.01em}
.hero-sub{font-size:18px;color:var(--ink);font-weight:500;margin-bottom:14px;line-height:1.7}
.hero-lead{font-size:16px;color:var(--muted);margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px}
.stat-chip{
  display:flex;flex-direction:column;gap:2px;
  background:var(--soft);border:1px solid var(--line);border-radius:var(--r-md);
  padding:12px 16px;min-width:132px;
}
.stat-chip strong{font-family:var(--serif);font-size:20px;color:var(--orange-text);line-height:1.2}
.stat-chip span{font-size:12px;color:var(--weak);line-height:1.5}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);
  border:2px solid var(--line);box-shadow:var(--sh-1);
}
.hero-media .hero-float{
  position:absolute;left:-14px;bottom:18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);padding:12px 16px;max-width:230px;
}
.hero-media .hero-float strong{display:block;font-size:14px;color:var(--ink);margin-bottom:4px}
.hero-media .hero-float span{font-size:12px;color:var(--weak);line-height:1.6}
/* ===================== 面包屑 ===================== */
.breadcrumb{padding:18px 0 0;font-size:13px;color:var(--weak)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line);font-size:12px}
.breadcrumb a:hover{color:var(--teal-text)}
.breadcrumb [aria-current]{color:var(--muted)}
/* ===================== 两栏布局 ===================== */
.layout{display:grid;grid-template-columns:4fr 8fr;gap:32px;align-items:start}
.side{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:22px}
.side-card h3{font-size:16px;margin-bottom:14px;font-family:var(--sans);font-weight:700;color:var(--ink)}
.anchor-nav{display:flex;flex-direction:column;gap:2px}
.anchor-nav a{
  position:relative;display:block;padding:9px 12px 9px 16px;border-radius:var(--r-sm);
  font-size:14px;color:var(--muted);
}
.anchor-nav a::before{
  content:"";position:absolute;left:4px;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:3px;background:var(--orange);transition:height .2s ease;
}
.anchor-nav a:hover{background:var(--soft);color:var(--ink)}
.anchor-nav a.is-active{background:var(--orange-soft);color:var(--orange-text);font-weight:600}
.anchor-nav a.is-active::before{height:18px}
.side-help{background:var(--ink);color:#F6F3EE;border-radius:var(--r-lg);padding:22px;border:1px solid var(--line-dark)}
.side-help h3{color:#fff;font-family:var(--sans);font-size:16px;font-weight:700;margin-bottom:10px}
.side-help p{font-size:13px;color:#A8A29A;line-height:1.75;margin-bottom:16px}
.side-help .btn{width:100%}
.side-list{display:flex;flex-direction:column;gap:10px}
.side-list a{
  display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);
  padding:10px 12px;border-radius:var(--r-sm);background:var(--soft);border:1px solid transparent;
}
.side-list a:hover{color:var(--teal-text);border-color:var(--teal);background:#fff}
.side-list a i{color:var(--orange);font-size:13px}
/* ===================== 内容块 ===================== */
.content-stack{display:flex;flex-direction:column;gap:24px}
.block{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:32px;scroll-margin-top:104px;
}
.block-head{margin-bottom:20px}
.block-head h2{font-size:24px;line-height:1.36;position:relative;padding-left:16px;margin-bottom:12px}
.block-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--orange);
}
.block-head p{color:var(--muted);font-size:15px}
.block p{font-size:16px;line-height:1.85;color:var(--muted)}
.block p strong{color:var(--ink)}
/* 线路卡 */
.route-list{display:flex;flex-direction:column;gap:16px;margin-top:22px}
.route-item{
  display:grid;grid-template-columns:64px 1fr auto;gap:18px;align-items:center;
  border:1px solid var(--line);border-radius:var(--r-lg);padding:18px 20px;background:var(--soft);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.route-item:hover{transform:translateY(-3px);border-color:var(--orange);background:#fff;box-shadow:var(--sh-2)}
.route-num{
  width:52px;height:52px;border-radius:14px;background:var(--orange);color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-weight:700;font-size:20px;
}
.route-body h3{font-size:18px;margin-bottom:6px;font-family:var(--serif)}
.route-body p{font-size:14px;line-height:1.7;color:var(--muted);margin:0}
.route-item .badge{white-space:nowrap}
/* 准备清单 */
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}
.check-item{
  display:flex;gap:12px;align-items:flex-start;background:var(--soft);
  border:1px solid var(--line);border-radius:var(--r-md);padding:16px;
}
.check-item i{color:var(--teal);font-size:16px;margin-top:3px}
.check-item strong{display:block;font-size:15px;color:var(--ink);margin-bottom:4px}
.check-item span{font-size:13px;color:var(--muted);line-height:1.7}
/* 步骤时间线 */
.steps{position:relative;margin-top:24px;display:flex;flex-direction:column;gap:8px}
.step{
  position:relative;display:grid;grid-template-columns:56px 1fr;gap:18px;padding:18px 0;
  border-bottom:1px dashed var(--line);
}
.step:last-child{border-bottom:0}
.step-no{
  width:44px;height:44px;border-radius:50%;background:#fff;border:2px solid var(--orange);
  color:var(--orange-text);display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-weight:700;font-size:16px;
}
.step-body h3{font-size:18px;margin-bottom:8px;font-family:var(--serif)}
.step-body p{font-size:15px;line-height:1.8;margin:0;color:var(--muted)}
.step-body .step-tip{
  display:inline-flex;align-items:center;gap:8px;margin-top:10px;
  font-size:13px;color:var(--teal-text);background:var(--teal-soft);border-radius:999px;padding:5px 12px;
}
/* 对比卡 */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:24px}
.compare-card{
  border:1px solid var(--line);border-radius:var(--r-lg);background:var(--soft);padding:24px;
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.compare-card:hover{transform:translateY(-4px);border-color:var(--orange);background:#fff;box-shadow:var(--sh-2)}
.compare-card .icon{
  width:46px;height:46px;border-radius:12px;background:var(--teal-soft);color:var(--teal-text);
  display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:14px;
}
.compare-card h3{font-size:19px;margin-bottom:10px;font-family:var(--serif)}
.compare-card ul{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.compare-card li{position:relative;padding-left:18px;font-size:14px;line-height:1.75;color:var(--muted)}
.compare-card li::before{
  content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:50%;background:var(--orange);
}
/* 错误处理表 */
.table-wrap{margin-top:22px;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:#fff}
table.trouble{width:100%;border-collapse:collapse}
table.trouble th,table.trouble td{
  text-align:left;padding:15px 18px;font-size:14px;line-height:1.7;border-bottom:1px solid var(--line);vertical-align:top;
}
table.trouble thead th{background:var(--soft);color:var(--ink);font-weight:700;font-size:13px;letter-spacing:.04em}
table.trouble tbody tr:last-child td{border-bottom:0}
table.trouble tbody tr:hover{background:var(--soft)}
table.trouble td.tip{color:var(--teal-text);font-weight:600}
/* 问答速查 */
.qa-list{margin-top:20px;display:flex;flex-direction:column;gap:14px}
.qa-item{
  border-left:4px solid var(--orange);background:var(--soft);border-radius:0 var(--r-md) var(--r-md) 0;
  padding:18px 20px;transition:background-color .2s ease,border-color .2s ease;
}
.qa-item:hover{background:#fff;border-left-color:var(--teal)}
.qa-item h3{font-size:17px;margin-bottom:8px;font-family:var(--serif)}
.qa-item p{font-size:14px;line-height:1.8;color:var(--muted);margin:0}
/* 配图块 */
.figure-block{margin-top:24px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line)}
.figure-block img{width:100%;aspect-ratio:16/9;object-fit:cover}
.figure-block figcaption{background:var(--soft);padding:12px 18px;font-size:13px;color:var(--weak)}
/* ===================== 底部 CTA ===================== */
.cta-band{background:var(--ink);color:#F6F3EE;padding:72px 0;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,61,.22),rgba(255,106,61,0) 70%);
}
.cta-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center}
.cta-band h2{color:#fff;font-size:30px;line-height:1.34;margin-bottom:14px}
.cta-band p{color:#A8A29A;font-size:16px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.cta-panel{
  background:var(--ink-2);border:1px solid var(--line-dark);border-radius:var(--r-lg);padding:24px;
}
.cta-panel h3{color:#fff;font-size:17px;font-family:var(--sans);font-weight:700;margin-bottom:14px}
.cta-panel ul{display:flex;flex-direction:column;gap:10px}
.cta-panel li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#A8A29A;line-height:1.7}
.cta-panel li i{color:var(--teal);margin-top:4px;font-size:13px}
/* ===================== 返回入口 ===================== */
.back-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  padding:20px 24px;
}
.back-bar p{margin:0;font-size:14px;color:var(--muted)}
.back-links{display:flex;flex-wrap:wrap;gap:12px}
/* ===================== 页脚 ===================== */
.site-footer{background:var(--ink);color:#F6F3EE;padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:36px;border-bottom:1px solid var(--line-dark)}
.footer-brand .brand{font-size:19px;color:#fff;padding:0 0 14px}
.footer-brand .brand .brand-bottom{color:var(--orange)}
.footer-brand p{font-size:14px;line-height:1.85;color:#A8A29A;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;font-family:var(--sans);font-weight:700;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#A8A29A}
.footer-links a:hover{color:var(--orange)}
.footer-meta{display:flex;flex-direction:column;gap:10px;font-size:14px;color:#A8A29A}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:22px;
  font-size:13px;color:#8A857D;
}
.footer-bottom p{margin:0;line-height:1.7}
/* ===================== 响应式 ===================== */
@media (max-width:1200px){
  .container{max-width:1140px}
}
@media (max-width:992px){
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/9}
  .layout{grid-template-columns:1fr;gap:24px}
  .side{position:static}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .block{padding:26px}
  .nav{display:none}
  .menu-toggle{display:inline-flex}
  .header-right{flex:0 0 auto}
  .header-cta{display:none}
  .header-inner{justify-content:space-between}
  .brand{order:-1}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .hero-copy h1{font-size:30px;line-height:1.34}
  .hero-sub{font-size:16px}
  .page-hero{padding:48px 0 56px}
  .section-head h2,.cta-band h2{font-size:24px;line-height:1.36}
  .block-head h2{font-size:21px}
  .h3{font-size:19px}
  .block{padding:20px}
  .check-list{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
  .route-item{grid-template-columns:48px 1fr;row-gap:10px}
  .route-item .badge{grid-column:2}
  .route-num{width:44px;height:44px;font-size:17px;border-radius:12px}
  .btn{width:100%}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .hero-media .hero-float{position:static;margin-top:14px;max-width:none}
  .table-wrap{overflow-x:auto}
  table.trouble{min-width:640px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .brand{flex-direction:column;align-items:center;column-gap:0;line-height:1.15;font-size:15px;padding:0}
  .hero-stats{gap:10px}
  .stat-chip{flex:1 1 45%;min-width:0;padding:10px 12px}
  .step{grid-template-columns:44px 1fr;gap:12px}
  .drawer{padding:14px 16px 22px}
}

/* roulang page: category2 */
:root{
  --orange:#FF6A3D;
  --orange-dark:#E85A2E;
  --orange-soft:#FFE9E0;
  --orange-text:#C2410C;
  --teal:#18B7A6;
  --teal-soft:#DDF7F3;
  --teal-text:#0F766E;
  --ink:#111318;
  --ink-2:#1B1F24;
  --paper:#F6F3EE;
  --card:#FFFFFF;
  --soft:#FBF9F5;
  --text:#1A1A1A;
  --muted:#5C5A55;
  --faint:#8A857D;
  --line:#E6E0D6;
  --success:#1F9D6A;
  --warning:#D97706;
  --error:#D14343;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 8px 24px rgba(17,19,24,.06);
  --shadow-hover:0 14px 32px rgba(17,19,24,.10);
  --font-serif:"Noto Serif SC","Songti SC","STSong",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:28px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);color:var(--ink)}
p{margin:0}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(24,183,166,.35);border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:40px}
.section-head h2{font-size:30px;line-height:38px;font-weight:700}
.section-head h2::after{content:"";display:block;width:48px;height:3px;border-radius:2px;background:var(--orange);margin-top:18px}
.section-head p{margin-top:20px;color:var(--muted);font-size:16px;line-height:30px}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:2px;font-weight:700;color:var(--orange-text);background:var(--orange-soft);border-radius:var(--radius-pill);padding:4px 12px;margin-bottom:18px}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;min-height:76px;gap:16px}
.nav{display:flex;align-items:center;gap:28px}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end;gap:18px}
.nav-link{position:relative;font-size:15px;line-height:22px;font-weight:500;color:var(--muted);padding:6px 0;transition:color .2s ease}
.nav-link:hover{color:var(--ink)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--orange)}
.brand{display:flex;flex-direction:column;align-items:center;line-height:1.15;color:var(--ink);font-family:var(--font-serif)}
.brand-top{font-size:17px;font-weight:700;letter-spacing:.5px}
.brand-bottom{font-size:13px;letter-spacing:1px;color:var(--muted)}
.menu-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--soft);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-cta{display:none}
.mobile-drawer{position:fixed;inset:0;background:#fff;z-index:80;padding:88px 24px 32px;transform:translateX(-100%);transition:transform .28s ease;overflow-y:auto}
.mobile-drawer.is-open{transform:translateX(0)}
.mobile-drawer h3{font-size:13px;letter-spacing:2px;color:var(--faint);margin-bottom:14px;font-family:var(--font-sans);font-weight:600}
.mobile-drawer .drawer-links{display:grid;gap:6px;margin-bottom:28px}
.mobile-drawer .drawer-links a{font-size:19px;line-height:1.4;font-weight:600;padding:12px 0;border-bottom:1px solid var(--line);font-family:var(--font-serif)}
.mobile-drawer .drawer-links a.is-active{color:var(--orange-text)}
.mobile-drawer .btn{width:100%}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 24px;border-radius:var(--radius-sm);font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background-color .2s ease,transform .15s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;white-space:nowrap}
.btn-primary{background:var(--orange);color:var(--ink)}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0) scale(.98)}
.btn-ghost{background:var(--soft);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--orange);color:var(--orange-text);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn[disabled],.btn.is-disabled{opacity:.55;cursor:not-allowed;transform:none}
.on-dark.btn-primary{color:#111318}
.on-dark.btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.16);color:#F6F3EE}
.on-dark.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.3)}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;border-radius:var(--radius-pill);padding:4px 10px;font-size:12px;line-height:20px;font-weight:600}
.badge-cat{background:var(--orange-soft);color:var(--orange-text)}
.badge-status{background:var(--teal-soft);color:var(--teal-text)}
.tagbar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.tag{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;color:var(--muted);border-radius:var(--radius-pill);padding:8px 16px;font-size:14px;line-height:20px;transition:border-color .2s ease,color .2s ease,transform .15s ease}
.tag:hover{border-color:var(--orange);color:var(--orange-text);transform:translateY(-1px)}

/* Hero */
.hero{padding:72px 0 88px;border-bottom:1px solid var(--line);background:var(--paper)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero h1{font-size:40px;line-height:48px;font-weight:700;margin:16px 0 0}
.hero-sub{margin-top:20px;font-size:18px;line-height:30px;color:var(--muted);max-width:560px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-stats li{display:inline-flex;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);padding:8px 16px;font-size:13px;line-height:20px;color:var(--muted)}
.hero-stats b{font-family:var(--font-serif);font-size:16px;color:var(--ink);margin-right:8px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;border:2px solid var(--line);box-shadow:var(--shadow)}
.hero-media .stamp{position:absolute;right:16px;bottom:16px;background:var(--orange);color:#111318;font-size:12px;font-weight:700;letter-spacing:1px;padding:6px 14px;border-radius:var(--radius-pill);box-shadow:var(--shadow)}
.img-fallback{background:var(--soft);border:1px dashed var(--line);display:flex;align-items:center;justify-content:center;color:var(--faint);font-size:13px;min-height:160px;border-radius:var(--radius)}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:var(--shadow-hover)}
.card h3{font-size:22px;line-height:30px;font-weight:600;margin-bottom:12px}
.card p{color:var(--muted);font-size:16px;line-height:30px}
.card-num{display:inline-block;font-family:var(--font-serif);font-size:13px;font-weight:700;letter-spacing:2px;color:var(--orange);margin-bottom:12px}

/* 横向图文卡 */
.feature{display:grid;grid-template-columns:5fr 7fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.feature img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover}
.feature-body{padding:36px}
.feature-body h3{font-size:22px;line-height:30px;margin:14px 0 14px;font-weight:600}
.feature-body p{color:var(--muted);line-height:30px}
.feature-list{margin-top:20px;display:grid;gap:10px}
.feature-list li{position:relative;padding-left:20px;color:var(--muted);font-size:15px;line-height:28px}
.feature-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--teal)}

/* 对照网格 */
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:24px}
.compare-grid .card{padding:26px}
.meta-line{display:flex;align-items:center;gap:10px;font-size:12px;line-height:18px;color:var(--faint);margin-bottom:16px}

/* 步骤卡 */
.step-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.step-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;display:flex;flex-direction:column}
.step-card:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:var(--shadow-hover)}
.step-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.step-body{padding:26px}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:var(--orange-soft);color:var(--orange-text);font-family:var(--font-serif);font-weight:700;font-size:15px;margin-bottom:16px}
.step-body h3{font-size:19px;line-height:28px;font-weight:600;margin-bottom:10px}
.step-body p{color:var(--muted);font-size:15px;line-height:28px}

/* 清单 */
.check-list{display:grid;gap:16px;margin-top:24px}
.check-item{display:grid;grid-template-columns:32px 1fr;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow);transition:border-color .2s ease,transform .2s ease}
.check-item:hover{border-color:var(--teal);transform:translateY(-2px)}
.check-dot{width:32px;height:32px;border-radius:10px;background:var(--teal-soft);color:var(--teal-text);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.check-item h3{font-size:18px;line-height:28px;font-weight:600;margin-bottom:6px;font-family:var(--font-sans)}
.check-item p{color:var(--muted);font-size:15px;line-height:28px}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.faq-aside .card{position:sticky;top:104px}
.faq-aside h3{font-size:22px;line-height:30px;margin-bottom:12px}
.faq-aside p{color:var(--muted);font-size:15px;line-height:28px}
.faq-aside .btn{margin-top:22px;width:100%}
.faq-list{display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item.is-open{border-color:var(--orange);box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px;background:none;border:0;cursor:pointer;text-align:left;font-size:18px;line-height:28px;font-weight:600;color:var(--muted);transition:color .2s ease}
.faq-item.is-open .faq-q{color:var(--ink)}
.faq-icon{position:relative;flex:none;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--orange);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;background:var(--soft)}
.faq-item.is-open .faq-a{max-height:460px}
.faq-a p{padding:4px 24px 22px;color:var(--muted);font-size:15px;line-height:28px}

/* CTA */
.cta{position:relative;background:#111318;color:#F6F3EE;padding:88px 0;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.14}
.cta-inner{position:relative;max-width:760px;margin:0 auto;text-align:center}
.cta h2{color:#fff;font-size:30px;line-height:38px}
.cta p{margin-top:20px;color:#A8A29A;font-size:16px;line-height:30px}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-top:34px}
.cta-note{margin-top:22px;font-size:13px;color:#8A857D}

/* 返回入口 */
.back-bar{background:var(--soft);border-top:1px solid var(--line);padding:28px 0}
.back-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.back-bar span{color:var(--faint);font-size:14px}
.back-links{display:flex;gap:12px;flex-wrap:wrap}
.back-links a{display:inline-flex;align-items:center;border:1px solid var(--line);background:#fff;border-radius:var(--radius-pill);padding:8px 18px;font-size:14px;color:var(--muted);transition:border-color .2s ease,color .2s ease,transform .15s ease}
.back-links a:hover{border-color:var(--orange);color:var(--orange-text);transform:translateY(-1px)}

/* 页脚 */
.site-footer{background:#111318;color:#F6F3EE;padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:40px}
.site-footer .brand{align-items:flex-start;color:#F6F3EE}
.site-footer .brand-top{color:#fff}
.site-footer .brand-bottom{color:#A8A29A}
.footer-brand p{margin-top:18px;color:#A8A29A;font-size:14px;line-height:26px;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;line-height:24px;font-weight:600;margin-bottom:18px;font-family:var(--font-sans)}
.footer-links{display:grid;gap:10px}
.footer-links a{color:#A8A29A;font-size:14px;line-height:24px;transition:color .2s ease}
.footer-links a:hover{color:var(--orange)}
.footer-meta{display:grid;gap:10px;color:#A8A29A;font-size:14px;line-height:24px}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#8A857D;font-size:13px;line-height:22px}

@media (max-width:1200px){
  .container{max-width:1140px}
}
@media (max-width:992px){
  .nav-left,.nav-right{display:none}
  .menu-toggle{display:flex}
  .mobile-cta{display:inline-flex;justify-self:end}
  .header-inner{grid-template-columns:auto 1fr auto;min-height:68px}
  .hero{padding:52px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/10}
  .section{padding:64px 0}
  .feature{grid-template-columns:1fr}
  .feature img{aspect-ratio:16/9}
  .feature-body{padding:26px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside .card{position:static}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .hero h1{font-size:30px;line-height:38px}
  .hero-sub{font-size:16px;line-height:28px}
  .section-head h2,.cta h2{font-size:24px;line-height:34px}
  .section,.section--tight,.cta{padding:56px 0}
  .compare-grid,.step-grid{grid-template-columns:1fr}
  .card{padding:20px}
  .btn{width:100%}
  .hero-actions{gap:12px}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .hero-stats li{width:100%;justify-content:flex-start}
  .back-bar-inner{flex-direction:column;align-items:stretch}
  .back-links a{justify-content:center}
  .mobile-drawer{padding-top:80px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .tagbar{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
  .tag{flex:none}
  .faq-q{font-size:16px;line-height:26px;padding:18px}
  .faq-a p{padding:0 18px 18px}
  .brand-top{font-size:15px}
  .brand-bottom{font-size:11px}
}