/* roulang page: index */
:root{
  --primary:#1F7A6B;
  --primary-dark:#155C50;
  --primary-soft:rgba(31,122,107,.08);
  --accent:#E2662A;
  --accent-dark:#C8531F;
  --gold:#C9A227;
  --bg:#F7F4EE;
  --bg-alt:#EAF2EF;
  --card:#FFFFFF;
  --dark:#12211E;
  --ink:#17211F;
  --ink-2:#4A5A57;
  --ink-3:#8A9995;
  --success:#2E8B57;
  --warn:#C98A0E;
  --error:#C0392B;
  --line:1px solid rgba(31,122,107,.14);
  --hairline:1px solid rgba(201,162,39,.22);
  --r-card:16px;
  --r-lg:24px;
  --r-input:12px;
  --r-pill:999px;
  --shadow-card:0 1px 2px rgba(23,33,31,.06),0 8px 24px rgba(23,33,31,.06);
  --shadow-hover:0 12px 32px rgba(31,122,107,.14);
  --ease:.35s ease;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-input);}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),background-color var(--ease);}
a:hover{color:var(--primary-dark);text-decoration:underline;text-underline-offset:2px;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.2em;}
li{margin-bottom:.4em;}
:focus-visible{outline:2px dashed var(--primary);outline-offset:3px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}
.section{padding:80px 0;}
.section--alt{background:var(--bg-alt);}
.section--dark{background:var(--dark);color:#fff;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);background:var(--primary-soft);
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
h2.section-title{font-size:34px;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.section-desc{margin-top:14px;color:var(--ink-2);font-size:17px;line-height:1.8;}
.tick{width:44px;height:4px;border-radius:2px;background:var(--primary);margin-bottom:20px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:16px;font-weight:600;line-height:1;cursor:pointer;
  border-radius:var(--r-pill);padding:14px 28px;border:1.5px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
  text-decoration:none;min-height:48px;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(226,102,42,.24);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(226,102,42,.28);}
.btn-primary:active{transform:translateY(-1px);}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--primary);padding:8px 0;min-height:auto;border:none;}
.btn-ghost .arrow{display:inline-block;transition:transform var(--ease);}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:60;
  transition:top var(--ease);
}
.nav-shell{
  display:flex;align-items:center;gap:20px;
  height:64px;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(31,122,107,.16);
  border-radius:var(--r-pill);
  box-shadow:0 8px 28px rgba(23,33,31,.08);
  padding:0 12px 0 20px;
  transition:height var(--ease),background-color var(--ease);
}
.site-header.is-scrolled .nav-shell{height:56px;background:rgba(255,255,255,.95);}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);flex-shrink:0;}
.brand:hover{text-decoration:none;color:var(--ink);}
.brand-mark{
  width:36px;height:36px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),#2E9C88);
  display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  font-size:16px;color:var(--ink-2);padding:10px 16px;border-radius:var(--r-pill);
  min-height:44px;
}
.nav-link:hover{color:var(--primary-dark);background:var(--primary-soft);text-decoration:none;}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:4px;transform:translateX(-50%);
  width:20px;height:4px;border-radius:2px;background:var(--primary);
}
.nav-cta{flex-shrink:0;padding:12px 24px;min-height:44px;font-size:15px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid rgba(31,122,107,.2);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;flex-shrink:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--primary);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--primary);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- Hero ---------- */
.hero{position:relative;padding:172px 0 96px;overflow:hidden;background:var(--dark);}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:0;}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(31,122,107,.86),rgba(18,33,30,.62));
}
.hero-inner{position:relative;z-index:2;max-width:840px;color:#fff;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  color:#F2FBF8;border-radius:var(--r-pill);padding:7px 16px;margin-bottom:22px;
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);}
.hero h1{
  font-size:48px;line-height:1.2;font-weight:800;color:#fff;letter-spacing:-.02em;
  max-width:16em;
}
.hero-sub{margin-top:20px;font-size:18px;line-height:1.8;color:rgba(255,255,255,.88);max-width:34em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero .btn-outline{color:#fff;border-color:rgba(255,255,255,.7);}
.hero .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;margin-top:52px;
  border-top:1px solid rgba(255,255,255,.22);padding-top:28px;
}
.stat{padding-right:36px;margin-right:36px;border-right:1px solid rgba(201,162,39,.5);}
.stat:last-child{border-right:none;margin-right:0;padding-right:0;}
.stat-num{font-size:40px;font-weight:800;line-height:1.1;color:#F0A468;letter-spacing:-.02em;}
.stat-num small{font-size:18px;font-weight:600;margin-left:4px;color:#F0A468;}
.stat-label{font-size:14px;color:rgba(255,255,255,.78);margin-top:6px;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:56px;}
.timeline-line{
  position:absolute;top:26px;left:6%;right:6%;height:0;
  border-top:2px dashed rgba(201,162,39,.55);
}
.timeline-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;}
.step{background:var(--card);border:var(--line);border-radius:var(--r-card);padding:28px 26px;box-shadow:var(--shadow-card);}
.step-index{
  width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:2px solid var(--gold);color:var(--accent);font-weight:800;font-size:18px;
  background:#fff;margin-bottom:18px;
}
.step h3{font-size:21px;font-weight:600;margin-bottom:10px;}
.step p{color:var(--ink-2);font-size:15.5px;margin-bottom:16px;}
.step-tag{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;
  color:var(--primary);background:var(--primary-soft);border-radius:var(--r-pill);padding:5px 12px;
}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;}
.case-card{
  background:var(--card);border:var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-card);transition:transform var(--ease),box-shadow var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.case-card.tall{margin-top:0;}
.case-card.low{margin-top:64px;}
.case-media{position:relative;overflow:hidden;background:linear-gradient(135deg,#1F7A6B,#12211E);}
.case-card.tall .case-media{aspect-ratio:16/10;}
.case-card.low .case-media{aspect-ratio:4/3;}
.case-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--ease);}
.case-card:hover .case-media img{transform:scale(1.03);}
.case-badge{
  position:absolute;top:14px;left:14px;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.94);color:var(--primary);border-radius:var(--r-pill);padding:5px 13px;
}
.case-body{padding:26px 26px 30px;}
.case-body h3{font-size:21px;font-weight:600;margin-bottom:10px;}
.case-body p{color:var(--ink-2);font-size:15.5px;}
.case-result{
  display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:16px;
  border-top:var(--hairline);font-size:15px;font-weight:600;color:var(--accent);
}
.case-result span.num{font-size:22px;font-weight:800;}

/* ---------- 渠道类型滚动带 ---------- */
.chip-scroller{
  display:flex;gap:14px;overflow-x:auto;padding:6px 4px 18px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.chip-scroller::-webkit-scrollbar{height:6px;}
.chip-scroller::-webkit-scrollbar-thumb{background:rgba(31,122,107,.25);border-radius:3px;}
.chip-card{
  flex:0 0 260px;scroll-snap-align:start;
  background:var(--card);border:var(--line);border-radius:var(--r-card);
  padding:22px 22px 24px;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease);
}
.chip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.chip-icon{
  width:42px;height:42px;border-radius:12px;background:var(--primary-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.chip-icon svg{width:20px;height:20px;}
.chip-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.chip-card p{font-size:14.5px;color:var(--ink-2);margin:0;}

/* ---------- 最新信息 ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;margin-bottom:32px;}
.pills{display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  display:inline-flex;align-items:center;font-size:14px;font-weight:600;
  padding:9px 18px;border-radius:var(--r-pill);border:var(--line);
  background:#fff;color:var(--ink-2);min-height:40px;
}
.pill:hover{border-color:rgba(31,122,107,.4);color:var(--primary-dark);text-decoration:none;}
.pill.is-active{background:var(--primary);border-color:var(--primary);color:#fff;}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  display:flex;flex-direction:column;
  background:var(--card);border:var(--line);border-radius:var(--r-card);
  padding:26px 24px 24px;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.post-card h3{font-size:18.5px;font-weight:600;line-height:1.5;margin-bottom:12px;}
.post-card h3 a{color:var(--ink);}
.post-card h3 a:hover{color:var(--primary-dark);}
.post-card .excerpt{
  font-size:15px;color:var(--ink-2);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:auto;padding-top:16px;border-top:var(--hairline);font-size:13px;color:var(--ink-3);
}
.badge{
  display:inline-flex;align-items:center;font-size:13px;font-weight:600;
  color:var(--primary);background:var(--primary-soft);border-radius:var(--r-pill);padding:4px 12px;
}
.badge--hot{color:#fff;background:var(--accent);}
.post-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);}
.post-more .arrow{transition:transform var(--ease);}
.post-card:hover .post-more .arrow{transform:translateX(4px);}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:12px;
  background:var(--bg-alt);border:1px dashed rgba(31,122,107,.28);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;color:var(--ink-2);
}
.empty-state svg{width:36px;height:36px;}
.empty-state p{margin:0;font-size:15.5px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{
  background:var(--card);border:var(--line);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;position:relative;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);
  transform:scaleY(0);transform-origin:top;transition:transform .2s ease;
}
.faq-item.is-open::before{transform:scaleY(1);}
.faq-item.is-open{box-shadow:var(--shadow-card);border-color:rgba(31,122,107,.3);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:none;text-align:left;cursor:pointer;
  padding:22px 24px;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-icon{
  flex-shrink:0;width:30px;height:30px;border-radius:50%;
  border:1.5px solid var(--primary);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:17px;line-height:1;
  transition:transform .2s ease,background-color var(--ease),color var(--ease);
}
.faq-item.is-open .faq-icon{background:var(--primary);color:#fff;transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-a-inner{padding:0 24px 24px;color:var(--ink-2);font-size:15.5px;}
.faq-a-inner p:last-child{margin-bottom:0;}

/* ---------- CTA / 表单 ---------- */
.cta-section{position:relative;background:var(--dark);color:#fff;padding:80px 0;overflow:hidden;}
.cta-pattern{
  position:absolute;inset:0;opacity:.14;pointer-events:none;
  background-image:radial-gradient(circle at 20% 30%,rgba(201,162,39,.5) 0,transparent 45%),
                   radial-gradient(circle at 82% 70%,rgba(31,122,107,.8) 0,transparent 45%);
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 460px;gap:56px;align-items:start;}
.cta-copy h2{font-size:32px;line-height:1.3;font-weight:700;color:#fff;}
.cta-copy p{color:rgba(255,255,255,.8);margin-top:16px;font-size:16.5px;max-width:32em;}
.cta-points{list-style:none;padding:0;margin:26px 0 0;}
.cta-points li{
  position:relative;padding-left:26px;color:rgba(255,255,255,.86);font-size:15.5px;margin-bottom:12px;
}
.cta-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--gold);
}
.form-card{
  background:var(--card);border-radius:var(--r-lg);padding:32px 30px 34px;
  box-shadow:0 20px 50px rgba(0,0,0,.22);color:var(--ink);
}
.form-card h3{font-size:20px;font-weight:700;margin-bottom:6px;}
.form-card .form-note{font-size:14px;color:var(--ink-3);margin-bottom:22px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:8px;}
.field label .req{color:var(--accent);margin-left:4px;}
.field-input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-input);
  border:1px solid rgba(31,122,107,.22);background:#fff;color:var(--ink);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field-input::placeholder{color:var(--ink-3);}
.field-input:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,122,107,.15);
}
select.field-input{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%231F7A6B' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;padding-right:44px;
}
.field-hint{font-size:13px;color:var(--ink-3);margin-top:8px;}
.field-error{font-size:13px;color:var(--error);margin-top:8px;display:none;}
.form-card .btn{width:100%;}
.form-foot{font-size:13px;color:var(--ink-3);text-align:center;margin-top:14px;margin-bottom:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 28px;
  border-top:1px solid rgba(201,162,39,.35);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:11px;}
.footer-brand .brand-text{color:#fff;font-size:17px;font-weight:700;}
.footer-slogan{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66);max-width:26em;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer-links{list-style:none;padding:0;margin:0;}
.footer-links li{margin-bottom:12px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:15px;}
.footer-links a:hover{color:#fff;text-decoration:none;}
.footer-contact{list-style:none;padding:0;margin:0;font-size:15px;}
.footer-contact li{margin-bottom:12px;color:rgba(255,255,255,.72);}
.footer-contact strong{display:block;color:#fff;font-weight:600;font-size:14px;margin-bottom:4px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(201,162,39,.22);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .cta-grid{grid-template-columns:1fr 400px;gap:40px;}
}
@media (max-width:1023px){
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .nav-links{
    position:absolute;top:74px;left:16px;right:16px;
    flex-direction:column;align-items:stretch;gap:2px;margin:0;
    background:#fff;border:var(--line);border-radius:20px;
    padding:14px;box-shadow:0 18px 40px rgba(23,33,31,.14);
    max-height:0;overflow:hidden;opacity:0;visibility:hidden;
    transition:max-height var(--ease),opacity var(--ease),visibility var(--ease);
  }
  .nav-links.is-open{max-height:420px;overflow-y:auto;opacity:1;visibility:visible;}
  .nav-link{min-height:44px;line-height:44px;padding:0 16px;border-radius:12px;}
  .nav-link.is-active{background:var(--primary-soft);}
  .nav-link.is-active::after{display:none;}
  .hero{padding:150px 0 76px;}
  .hero h1{font-size:38px;}
  .timeline-grid{grid-template-columns:1fr;}
  .timeline-line{display:none;}
  .case-grid{grid-template-columns:1fr;gap:24px;}
  .case-card.low{margin-top:0;}
  .cta-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .hero{padding:132px 0 56px;}
  .hero h1{font-size:31px;}
  .hero-sub{font-size:16.5px;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-stats{flex-direction:column;gap:20px;padding-top:22px;}
  .stat{border-right:none;padding-right:0;margin-right:0;}
  .stat-num{font-size:32px;}
  h2.section-title{font-size:24px;}
  .section-desc{font-size:16px;}
  .post-grid{grid-template-columns:1fr;}
  .chip-card{flex:0 0 82%;}
  .faq-q{font-size:16px;padding:18px 18px;}
  .faq-a-inner{padding:0 18px 20px;}
  .form-card{padding:26px 20px 28px;}
  .cta-copy h2{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .hero h1{font-size:29px;}
  .step{padding:22px 20px;}
}

/* roulang page: article */
:root{
  --primary:#1F7A6B;
  --primary-deep:#175D52;
  --primary-soft:rgba(31,122,107,.08);
  --primary-line:rgba(31,122,107,.14);
  --accent:#E2662A;
  --accent-deep:#C8531F;
  --gold:#C9A227;
  --gold-line:rgba(201,162,39,.12);
  --bg:#F7F4EE;
  --bg-alt:#EAF2EF;
  --card:#FFFFFF;
  --dark:#12211E;
  --text:#17211F;
  --text-2:#4A5A57;
  --text-3:#8A9995;
  --success:#2E8B57;
  --warn:#C98A0E;
  --err:#C0392B;
  --r-pill:999px;
  --r-card:16px;
  --r-block:24px;
  --r-input:12px;
  --shadow-sm:0 1px 2px rgba(23,33,31,.06), 0 8px 24px rgba(23,33,31,.06);
  --shadow-lg:0 12px 32px rgba(31,122,107,.14);
  --t:.35s ease;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .25s ease, text-underline-offset .25s ease;}
a:hover{color:var(--primary-deep);text-decoration:underline;text-underline-offset:2px;}
ul,ol{margin:0 0 1em;padding-left:1.25em;}
li{margin:.35em 0;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--text);}
p{margin:0 0 1em;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px dashed var(--primary);outline-offset:3px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  padding:16px 0 0;
  background:transparent;
}
.nav-shell{
  display:flex;
  align-items:center;
  gap:24px;
  height:64px;
  padding:0 16px 0 20px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid rgba(31,122,107,.16);
  box-shadow:0 6px 24px rgba(23,33,31,.08);
  transition:height var(--t), background var(--t), box-shadow var(--t);
}
.site-header.is-scrolled{padding-top:10px;}
.site-header.is-scrolled .nav-shell{
  height:56px;
  background:rgba(255,255,255,.95);
  box-shadow:0 10px 28px rgba(23,33,31,.12);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:34px;height:34px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#1F7A6B,#175D52);
  box-shadow:0 4px 12px rgba(31,122,107,.28);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{
  font-size:18px;font-weight:700;color:var(--text);
  letter-spacing:.5px;white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:8px 14px;
  font-size:16px;
  color:var(--text-2);
  border-radius:var(--r-pill);
  transition:color var(--t), background var(--t);
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft);text-decoration:none;}
.nav-link.is-active{color:var(--primary);font-weight:600;background:var(--primary-soft);}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:20px;height:3px;border-radius:2px;background:var(--primary);
}
.nav-cta{margin-left:8px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--primary-line);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--primary);border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--primary);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);
  font-size:16px;font-weight:600;line-height:1;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform var(--t), box-shadow var(--t), background var(--t), color var(--t), border-color var(--t);
  text-decoration:none;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(226,102,42,.28);}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(200,83,31,.32);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-deep);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 2px;font-size:16px;font-weight:600;color:var(--primary);
}
.btn-text .arrow{transition:transform var(--t);}
.btn-text:hover .arrow{transform:translateX(4px);}
.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;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge-hot{background:rgba(226,102,42,.12);color:var(--accent-deep);}
.badge-gold{background:rgba(201,162,39,.14);color:#8A6D12;}
.badge-dark{background:rgba(255,255,255,.14);color:#fff;}

/* ---------- 内页头图 ---------- */
.page-hero{
  position:relative;
  margin-top:24px;
  border-radius:var(--r-block);
  overflow:hidden;
  background:#12211E;
}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(31,122,107,.90),rgba(18,33,30,.62));
}
.page-hero__inner{position:relative;padding:44px 48px 48px;max-width:900px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:18px;}
.crumbs a{color:rgba(255,255,255,.86);}
.crumbs a:hover{color:#fff;}
.crumbs .sep{color:rgba(255,255,255,.45);}
.crumbs .current{color:rgba(255,255,255,.62);}
.article-title{
  font-size:44px;line-height:1.2;font-weight:800;color:#fff;
  letter-spacing:.5px;max-width:820px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:20px;font-size:13px;color:rgba(255,255,255,.82);
}
.article-meta .dot{width:1px;height:14px;background:rgba(201,162,39,.55);display:inline-block;}
.article-meta time{font-variant-numeric:tabular-nums;}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;
  align-items:start;
  padding-top:56px;
  padding-bottom:80px;
}
.article-main{min-width:0;}
.article-body{
  max-width:760px;
  background:var(--card);
  border:1px solid var(--primary-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);
  padding:40px 40px 36px;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
}
.article-body > *:first-child{margin-top:0;}
.article-body > *:last-child{margin-bottom:0;}
.article-body p{margin:0 0 1em;}
.article-body h2{
  position:relative;
  font-size:28px;line-height:1.35;font-weight:700;
  margin:2em 0 .7em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:2px;background:var(--primary);
}
.article-body h3{font-size:20px;line-height:1.45;font-weight:600;margin:1.6em 0 .6em;}
.article-body h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;color:var(--primary-deep);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.3em;}
.article-body li{margin:.4em 0;}
.article-body ul li::marker{color:var(--primary);}
.article-body ol li::marker{color:var(--accent);font-weight:700;}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;
  background:var(--bg-alt);
  border-left:4px solid var(--primary);
  border-radius:0 var(--r-input) var(--r-input) 0;
  color:var(--text-2);
  font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:14px;margin:1.4em auto;box-shadow:var(--shadow-sm);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body thead th{background:var(--bg-alt);color:var(--primary-deep);font-weight:600;}
.article-body th,.article-body td{
  border:1px solid var(--primary-line);padding:10px 14px;text-align:left;
}
.article-body tbody tr:nth-child(even){background:rgba(234,242,239,.55);}
.article-body a{text-decoration:underline;text-underline-offset:2px;}
.article-body hr{border:0;border-top:1px solid var(--gold-line);margin:2em 0;}

/* ---------- 标签行 + 分割 ---------- */
.article-foot{max-width:760px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;}
.gold-divider{
  height:1px;width:100%;
  background:linear-gradient(90deg,rgba(201,162,39,.5),rgba(201,162,39,0));
  margin:32px 0 28px;
}
.back-row{display:flex;flex-wrap:wrap;gap:18px;align-items:center;margin-top:28px;}

/* ---------- 相关推荐 ---------- */
.related-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;
}
.related-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--primary-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform var(--t), box-shadow var(--t);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);text-decoration:none;}
.thumb{
  position:relative;width:100%;aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt);
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t);}
.related-card:hover .thumb img{transform:scale(1.03);}
.thumb__ph{
  position:absolute;inset:0;
  background:linear-gradient(135deg,#1F7A6B,#175D52);
}
.thumb__ph::after{
  content:"";position:absolute;inset:0;opacity:.35;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.16) 0 2px,transparent 2px 26px);
}
.related-card__body{padding:18px 18px 22px;}
.related-card__body h3{font-size:17px;line-height:1.45;font-weight:600;color:var(--text);}
.related-card:hover .related-card__body h3{color:var(--primary);}
.related-card__body time{display:block;margin-top:10px;font-size:13px;color:var(--text-3);}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--card);border:1px solid var(--primary-line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-sm);
}
.side-title{
  display:flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--text);margin-bottom:14px;
}
.side-title::before{content:"";width:3px;height:15px;border-radius:2px;background:var(--primary);}
.side-list{list-style:none;margin:0;padding:0;}
.side-list li{margin:0;border-bottom:1px dashed var(--gold-line);}
.side-list li:last-child{border-bottom:0;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:15px;color:var(--text-2);
}
.side-list a:hover{color:var(--primary);text-decoration:none;}
.side-list .arrow{color:var(--text-3);font-size:14px;}
.side-card--dark{
  background:linear-gradient(150deg,#1F7A6B,#12211E);
  border-color:transparent;color:#fff;
}
.side-card--dark .side-title{color:#fff;}
.side-card--dark .side-title::before{background:var(--gold);}
.side-card--dark p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.82);margin-bottom:16px;}
.side-card--dark .btn{width:100%;padding:12px 18px;font-size:15px;}

/* ---------- 深色 CTA 区 ---------- */
.cta-band{
  position:relative;background:var(--dark);color:#fff;overflow:hidden;
  border-radius:var(--r-block);margin-bottom:80px;
}
.cta-band__texture{
  position:absolute;inset:0;opacity:.16;
  background:repeating-linear-gradient(115deg,rgba(201,162,39,.5) 0 1px,transparent 1px 32px);
}
.cta-band__inner{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;
  padding:56px 48px;align-items:center;
}
.cta-band h2{font-size:32px;color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:16px;max-width:520px;}
.cta-points{list-style:none;margin:22px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:10px;}
.cta-points li{
  margin:0;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(201,162,39,.4);font-size:13px;color:rgba(255,255,255,.86);
}
.form-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-card);padding:26px;
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:rgba(255,255,255,.9);margin-bottom:8px;}
.field .req{color:var(--accent);margin-left:2px;}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;
  border-radius:var(--r-input);border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.96);color:var(--text);
  transition:border-color var(--t), box-shadow var(--t);
}
.field select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' fill='none' stroke='%231F7A6B' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,122,107,.15);
}
.field .hint{font-size:12px;color:rgba(255,255,255,.6);margin-top:6px;}
.form-card .btn{width:100%;margin-top:6px;}
.form-note{font-size:12px;color:rgba(255,255,255,.55);margin:12px 0 0;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark);color:rgba(255,255,255,.72);
  border-top:1px solid rgba(201,162,39,.35);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;font-size:17px;}
.footer-slogan{font-size:15px;line-height:1.8;color:rgba(255,255,255,.7);max-width:320px;margin:0;}
.footer-col h4{font-size:16px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0;}
.footer-links li,.footer-contact li{margin:0 0 10px;}
.footer-links a{font-size:15px;color:rgba(255,255,255,.7);}
.footer-links a:hover{color:#fff;text-decoration:none;}
.footer-contact li{font-size:14px;line-height:1.7;color:rgba(255,255,255,.68);}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:600;margin-right:6px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--bg-alt);border:1px dashed var(--primary-line);
  border-radius:var(--r-card);padding:48px 24px;text-align:center;
}
.empty-state .ico{
  width:48px;height:48px;margin:0 auto 16px;border-radius:50%;
  border:1.5px solid var(--primary);display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:20px;font-weight:700;
}
.empty-state p{color:var(--text-2);margin-bottom:18px;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 24px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;padding-top:44px;}
  .article-side{position:static;order:2;}
  .article-body{padding:32px 28px;}
  .article-title{font-size:36px;}
  .cta-band__inner{grid-template-columns:1fr;gap:32px;padding:44px 32px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .nav-shell{gap:12px;padding:0 12px 0 14px;height:58px;}
  .brand-text{font-size:16px;}
  .nav-links{
    position:absolute;left:16px;right:16px;top:76px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border:1px solid var(--primary-line);
    border-radius:20px;box-shadow:0 20px 40px rgba(23,33,31,.16);
    padding:14px;max-height:0;overflow:hidden;opacity:0;pointer-events:none;
    transition:max-height .3s ease, opacity .25s ease;
  }
  .nav-links.is-open{max-height:340px;opacity:1;pointer-events:auto;overflow-y:auto;}
  .nav-link{padding:12px 14px;line-height:44px;border-radius:12px;}
  .nav-link.is-active::after{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .page-hero{margin-top:16px;border-radius:20px;}
  .page-hero__inner{padding:30px 20px 34px;}
  .article-title{font-size:30px;}
  .article-layout{padding-top:32px;padding-bottom:48px;}
  .article-body{padding:24px 18px;font-size:16px;}
  .article-body h2{font-size:23px;}
  .article-body table{font-size:14px;}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{border-radius:20px;margin-bottom:48px;}
  .cta-band h2{font-size:24px;}
  .cta-band__inner{padding:34px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --primary:#1F7A6B;
  --primary-deep:#175F53;
  --primary-soft:rgba(31,122,107,.08);
  --accent:#E2662A;
  --accent-deep:#C8531F;
  --gold:#C9A227;
  --bg:#F7F4EE;
  --bg-alt:#EAF2EF;
  --card:#FFFFFF;
  --dark:#12211E;
  --dark-2:#1B302B;
  --text:#17211F;
  --text-2:#4A5A57;
  --text-3:#8A9995;
  --border:rgba(31,122,107,.14);
  --border-strong:rgba(31,122,107,.28);
  --gold-line:rgba(201,162,39,.34);
  --ok:#2E8B57;
  --warn:#C98A0E;
  --err:#C0392B;
  --radius-pill:999px;
  --radius-card:16px;
  --radius-lg:24px;
  --radius-sm:12px;
  --shadow-card:0 1px 2px rgba(23,33,31,.06),0 8px 24px rgba(23,33,31,.06);
  --shadow-hover:0 12px 32px rgba(31,122,107,.14);
  --shadow-nav:0 6px 24px rgba(18,33,30,.10);
  --shadow-btn:0 8px 18px rgba(226,102,42,.28);
  --ease:.35s ease;
  --container:1200px;
}

/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img,svg{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--primary-deep);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px dashed var(--primary);outline-offset:2px;border-radius:4px;}

/* ============ 容器 & 通用板块 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}
.section{padding:80px 0;}
.section--alt{background:var(--bg-alt);}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--gold);
  border:1px solid var(--gold-line);border-radius:var(--radius-pill);
  padding:4px 12px;margin-bottom:16px;
}
.section-head h2{
  font-size:34px;line-height:1.3;font-weight:700;color:var(--text);
  position:relative;padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;
  border-radius:4px;background:var(--primary);
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);
  padding:14px 28px;
  font-size:16px;font-weight:600;line-height:1;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(226,102,42,.34);}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 6px 14px rgba(226,102,42,.26);}
.btn-ghost{background:transparent;color:var(--primary);border:1.5px solid var(--primary);}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-deep);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--primary-deep);}
.btn-light:hover{background:#fff;color:var(--primary-deep);transform:translateY(-2px);box-shadow:0 12px 26px rgba(0,0,0,.18);}
.btn-outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.55);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-weight:600;font-size:15px;
}
.link-arrow span{transition:transform var(--ease);}
.link-arrow:hover span{transform:translateX(4px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:var(--radius-pill);
  padding:5px 12px;
  font-size:13px;font-weight:600;line-height:1.4;
  background:var(--primary-soft);color:var(--primary);
}
.badge--accent{background:rgba(226,102,42,.12);color:var(--accent-deep);}
.badge--gold{background:rgba(201,162,39,.14);color:#8E7108;}
.badge--light{background:rgba(255,255,255,.16);color:#fff;}

/* ============ 悬浮胶囊导航 ============ */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:60;
  transition:top var(--ease);
}
.nav-shell{
  display:flex;align-items:center;gap:24px;
  height:64px;
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--border);
  border-radius:var(--radius-pill);
  box-shadow:var(--shadow-nav);
  padding:0 12px 0 20px;
  transition:height var(--ease),background var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled .nav-shell{
  height:56px;
  background:rgba(255,255,255,.95);
  box-shadow:0 8px 26px rgba(18,33,30,.14);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:34px;height:34px;border-radius:12px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--dark-2));
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;line-height:1.2;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;}
.nav-link{
  position:relative;
  padding:10px 14px;border-radius:var(--radius-pill);
  font-size:16px;color:var(--text-2);font-weight:500;
  transition:color var(--ease),background var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:0;height:4px;border-radius:4px;background:var(--primary);
  transform:translateX(-50%);transition:width var(--ease);
}
.nav-link:hover{color:var(--primary-deep);background:var(--primary-soft);}
.nav-link.is-active{color:var(--primary);font-weight:700;background:var(--primary);color:#fff;}
.nav-link.is-active::after{width:22px;background:var(--gold);bottom:-1px;}
.nav-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-pill);
  align-items:center;justify-content:center;
  border:1px solid var(--border);margin-left:auto;
}
.nav-toggle span{
  position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--primary);
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--primary);
  transition:transform var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ 分类页窄幅头图 ============ */
.page-hero{
  position:relative;
  min-height:270px;
  display:flex;align-items:flex-end;
  padding:140px 0 48px;
  overflow:hidden;
  background:linear-gradient(135deg,var(--primary),var(--dark));
}
.page-hero__media{position:absolute;inset:0;z-index:0;}
.page-hero__media img{width:100%;height:100%;object-fit:cover;}
.page-hero__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(31,122,107,.88),rgba(18,33,30,.62));
}
.page-hero__inner{position:relative;z-index:1;width:100%;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:rgba(255,255,255,.72);margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{opacity:.6;}
.breadcrumb .current{color:rgba(255,255,255,.62);}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.1em;color:#fff;
  border:1px solid rgba(201,162,39,.6);
  background:rgba(201,162,39,.16);
  border-radius:var(--radius-pill);padding:5px 14px;margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(30px,4vw,46px);
  line-height:1.2;font-weight:800;color:#fff;
  max-width:820px;
}
.page-hero__lead{
  margin-top:16px;max-width:680px;
  font-size:17px;line-height:1.7;color:rgba(255,255,255,.88);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}

/* ============ 指标带 ============ */
.metric-strip{background:var(--bg-alt);border-bottom:1px solid var(--border);}
.metric-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding:36px 0;
}
.metric{position:relative;padding-left:20px;}
.metric::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:var(--gold);opacity:.6;
}
.metric strong{
  display:block;font-size:38px;line-height:1.1;font-weight:800;color:var(--accent);
}
.metric span{display:block;margin-top:6px;font-size:14px;color:var(--text-2);}

/* ============ 左目录右内容布局 ============ */
.guide-layout{
  display:grid;
  grid-template-columns:3fr 9fr;
  gap:48px;
  align-items:start;
}
.toc-col{position:sticky;top:110px;}
.toc{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  padding:22px 20px;
}
.toc h2{
  font-size:15px;font-weight:700;color:var(--text);
  letter-spacing:.04em;margin-bottom:14px;
  padding-bottom:12px;border-bottom:1px solid var(--gold-line);
}
.toc ol{display:flex;flex-direction:column;gap:2px;}
.toc a{
  display:block;
  padding:9px 12px;border-radius:10px;
  font-size:14px;color:var(--text-2);
  border-left:3px solid transparent;
  transition:all var(--ease);
}
.toc a:hover{background:var(--primary-soft);color:var(--primary-deep);}
.toc a.is-current{
  background:var(--primary-soft);color:var(--primary-deep);
  border-left-color:var(--primary);font-weight:600;
}
.toc-card{
  margin-top:20px;padding:22px 20px;
  border-radius:var(--radius-card);
  background:linear-gradient(150deg,var(--primary),var(--dark));
  color:#fff;
}
.toc-card h3{font-size:16px;font-weight:700;margin-bottom:8px;}
.toc-card p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.82);margin-bottom:16px;}
.toc-card .toc-note{
  display:block;font-size:13px;color:rgba(255,255,255,.7);
  padding-top:12px;margin-top:14px;border-top:1px solid rgba(255,255,255,.18);
}

/* ============ 正文排版 ============ */
.content-col{min-width:0;}
.rich{max-width:760px;}
.rich h2{
  font-size:32px;line-height:1.3;font-weight:700;color:var(--text);
  margin:64px 0 20px;padding-left:16px;position:relative;
}
.rich h2:first-child{margin-top:0;}
.rich h2::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--primary);
}
.rich h3{
  font-size:21px;line-height:1.4;font-weight:600;color:var(--text);
  margin:36px 0 12px;
}
.rich p{margin:0 0 1em;color:var(--text-2);font-size:17px;line-height:1.85;}
.rich p strong{color:var(--text);font-weight:700;}
.rich ul,.rich ol{margin:0 0 1.2em;padding-left:0;display:flex;flex-direction:column;gap:10px;}
.rich ul li,.rich ol li{
  position:relative;padding-left:26px;color:var(--text-2);font-size:16.5px;line-height:1.8;
}
.rich ul li::before{
  content:"";position:absolute;left:6px;top:12px;
  width:8px;height:8px;border-radius:50%;
  background:var(--primary-soft);border:2px solid var(--primary);
}
.rich ol{counter-reset:rich-ol;}
.rich ol li{counter-increment:rich-ol;padding-left:34px;}
.rich ol li::before{
  content:counter(rich-ol,decimal-leading-zero);
  position:absolute;left:0;top:2px;
  font-size:13px;font-weight:700;color:var(--accent);
  background:rgba(226,102,42,.1);border-radius:6px;
  padding:1px 6px;line-height:1.5;
}
.rich blockquote{
  margin:26px 0;padding:20px 24px;
  background:var(--bg-alt);
  border-left:3px solid var(--gold);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-2);font-size:16.5px;line-height:1.8;
}
.rich blockquote cite{
  display:block;margin-top:10px;font-style:normal;
  font-size:13px;color:var(--text-3);
}
.rich figure{margin:28px 0;}
.rich figure img{
  width:100%;border-radius:var(--radius-sm);
  border:1px solid var(--border);
  aspect-ratio:16/10;object-fit:cover;
}
.rich figcaption{
  margin-top:10px;font-size:13px;color:var(--text-3);text-align:center;
}
.table-wrap{
  margin:24px 0;overflow-x:auto;
  border:1px solid var(--border);border-radius:var(--radius-sm);
  background:var(--card);
}
.table-wrap table{min-width:560px;font-size:15px;}
.table-wrap thead th{
  background:var(--bg-alt);color:var(--text);
  font-weight:700;font-size:14px;text-align:left;
  padding:14px 18px;white-space:nowrap;
}
.table-wrap tbody td{
  padding:14px 18px;color:var(--text-2);
  border-top:1px solid var(--border);line-height:1.7;
}
.table-wrap tbody tr:nth-child(even){background:rgba(234,242,239,.55);}

/* ============ 要点卡片组 ============ */
.point-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  margin:28px 0 8px;
}
.point-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  padding:22px 20px;
  transition:transform var(--ease),box-shadow var(--ease);
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.point-card .point-icon{
  width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);margin-bottom:14px;
}
.point-card .point-icon svg{width:20px;height:20px;stroke:var(--primary);}
.point-card h3{font-size:18px;font-weight:600;margin-bottom:8px;color:var(--text);}
.point-card p{font-size:14.5px;line-height:1.75;color:var(--text-2);}

/* ============ 步骤流程 ============ */
.step-list{
  margin:28px 0;display:flex;flex-direction:column;gap:0;
  border-left:2px dashed var(--border-strong);
  padding-left:0;
}
.step-item{
  position:relative;padding:0 0 30px 40px;
}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:attr(data-step);
  position:absolute;left:-19px;top:0;
  width:36px;height:36px;border-radius:50%;
  background:var(--card);border:2px solid var(--gold);
  color:var(--accent);font-size:13px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:.02em;
}
.step-item h3{margin:4px 0 8px;font-size:19px;font-weight:600;color:var(--text);}
.step-item p{margin:0;font-size:15.5px;line-height:1.8;color:var(--text-2);}
.step-item .step-meta{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:10px;font-size:13px;color:var(--text-3);
  background:var(--bg-alt);border-radius:var(--radius-pill);padding:4px 12px;
}

/* ============ FAQ 手风琴 ============ */
.faq-list{
  margin:28px 0 0;
  display:flex;flex-direction:column;gap:14px;
}
.faq-item{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  overflow:hidden;position:relative;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--primary);transform:scaleY(0);transform-origin:top;
  transition:transform .2s ease;
}
.faq-item.is-open::before{transform:scaleY(1);}
.faq-item.is-open{border-color:var(--border-strong);box-shadow:var(--shadow-hover);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--primary-deep);}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  border:1.5px solid var(--primary);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:600;line-height:1;
  transition:transform .2s ease,background var(--ease),color var(--ease);
}
.faq-item.is-open .faq-icon{background:var(--primary);color:#fff;transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a-inner{
  padding:0 22px 22px;font-size:15.5px;line-height:1.8;color:var(--text-2);
}
.faq-item.is-open .faq-a{max-height:420px;}

/* ============ 深色 CTA ============ */
.cta-section{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,var(--dark) 0%,#16302A 70%);
  color:#fff;
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 88% 18%,rgba(31,122,107,.42),transparent 46%),
                   repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 22px);
  opacity:.85;pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;
  padding:80px 0;
}
.cta-inner h2{
  font-size:34px;line-height:1.3;font-weight:700;color:#fff;margin-bottom:16px;
}
.cta-inner p{color:rgba(255,255,255,.78);font-size:16.5px;line-height:1.8;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.cta-aside{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-card);
  padding:26px 24px;
}
.cta-aside h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:16px;}
.cta-aside ul{display:flex;flex-direction:column;gap:14px;}
.cta-aside li{
  display:flex;gap:12px;font-size:14.5px;line-height:1.7;color:rgba(255,255,255,.8);
}
.cta-aside li b{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  background:rgba(201,162,39,.22);color:var(--gold);
  font-size:12px;display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.back-home{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:18px;font-size:14px;color:rgba(255,255,255,.7);
}
.back-home:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.78);
  border-top:1px solid var(--gold-line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;
}
.footer-col h4{
  font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;
  letter-spacing:.04em;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;font-size:17px;font-weight:700;}
.footer-slogan{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:15px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact li{font-size:14.5px;line-height:1.7;color:rgba(255,255,255,.66);}
.footer-contact strong{color:#fff;font-weight:600;margin-right:6px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 28px;
  font-size:13.5px;color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .container{padding:0 56px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-links{gap:2px;}
  .nav-link{padding:9px 10px;font-size:15px;}
  .guide-layout{grid-template-columns:1fr;gap:32px;}
  .toc-col{position:static;}
  .toc{position:static;}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:64px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .point-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .section-head h2{font-size:24px;}
  .rich h2{font-size:24px;margin-top:48px;}
  .rich h3{font-size:19px;}
  .rich p{font-size:16px;}
  .rich ul li,.rich ol li{font-size:16px;}
  .page-hero{padding:120px 0 40px;min-height:auto;}
  .page-hero h1{font-size:32px;}
  .page-hero__lead{font-size:16px;}
  .hero-actions .btn{flex:1 1 auto;}

  .nav-shell{padding:0 10px 0 14px;gap:10px;}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .nav-links{
    position:fixed;top:88px;left:16px;right:16px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border:1px solid var(--border);
    border-radius:20px;box-shadow:0 20px 48px rgba(18,33,30,.18);
    padding:14px;margin:0;
    max-height:calc(100vh - 120px);overflow-y:auto;
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  }
  body.nav-open .nav-links{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-link{padding:12px 14px;font-size:16px;line-height:44px;padding-top:0;padding-bottom:0;border-radius:12px;}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:var(--primary);color:#fff;}

  .metric-grid{grid-template-columns:1fr 1fr;gap:20px;padding:28px 0;}
  .metric strong{font-size:30px;}
  .point-grid{grid-template-columns:1fr;}
  .step-item{padding-left:34px;}
  .step-item::before{left:-17px;width:32px;height:32px;font-size:12px;}
  .faq-q{font-size:16px;padding:18px;}
  .faq-a-inner{padding:0 18px 18px;}
  .cta-inner h2{font-size:24px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .metric-grid{grid-template-columns:1fr;}
  .page-hero h1{font-size:28px;}
  .hero-kicker{font-size:12px;}
}

/* roulang page: category2 */
:root{
  --primary:#1F7A6B;
  --primary-deep:#155F53;
  --primary-soft:rgba(31,122,107,.08);
  --primary-soft-2:rgba(31,122,107,.16);
  --accent:#E2662A;
  --accent-deep:#C8531F;
  --gold:#C9A227;
  --gold-line:rgba(201,162,39,.28);
  --bg:#F7F4EE;
  --bg-alt:#EAF2EF;
  --surface:#FFFFFF;
  --dark:#12211E;
  --text:#17211F;
  --text-2:#4A5A57;
  --text-3:#8A9995;
  --border-color:rgba(31,122,107,.14);
  --border-strong:rgba(31,122,107,.24);
  --r-pill:999px;
  --r-card:16px;
  --r-lg:24px;
  --r-input:12px;
  --shadow:0 1px 2px rgba(23,33,31,.06), 0 8px 24px rgba(23,33,31,.06);
  --shadow-hover:0 12px 32px rgba(31,122,107,.14);
  --shadow-nav:0 8px 28px rgba(23,33,31,.10);
  --container:1200px;
  --ease:.35s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--primary-deep);text-decoration:underline;text-underline-offset:2px;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.3;}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.15em;}
li{margin-bottom:.5em;}
:focus-visible{outline:2px dashed var(--primary);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}
.section{padding:80px 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:var(--dark);color:#EAF2EF;}
.section-dark h2,.section-dark h3{color:#fff;}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:120;
  padding:0;
}
.nav-shell{
  max-width:var(--container);
  height:64px;
  display:flex;
  align-items:center;
  gap:18px;
  padding:0 20px;
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--primary-soft-2);
  border-radius:var(--r-pill);
  box-shadow:var(--shadow-nav);
  transition:height var(--ease),background var(--ease);
}
.site-header.is-scrolled .nav-shell{
  height:56px;
  background:rgba(255,255,255,.95);
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:36px;height:36px;
  flex:0 0 36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--primary) 0%,#1a6357 60%,var(--dark) 100%);
  box-shadow:0 4px 12px rgba(31,122,107,.28);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:.2px;
  color:var(--text);
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:16px;
  color:var(--text-2);
  padding:6px 2px;
  white-space:nowrap;
}
.nav-link:hover{color:var(--primary-deep);text-decoration:none;}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:4px;
  border-radius:999px;
  background:var(--primary);
}
.nav-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--border-color);
  background:var(--surface);
  border-radius:999px;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  margin-left:auto;
}
.nav-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--primary);position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--primary);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  font-size:16px;
  font-weight:600;
  border-radius:var(--r-pill);
  border:1.5px solid transparent;
  cursor:pointer;
  text-decoration:none;
  transition:transform .25s ease,background .25s ease,box-shadow .25s ease,color .25s ease,border-color .25s ease;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(226,102,42,.28);}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(226,102,42,.32);}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 6px 14px rgba(226,102,42,.26);}
.btn-secondary{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-secondary:hover{background:var(--primary-soft);color:var(--primary-deep);transform:translateY(-2px);}
.btn-secondary:active{transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--primary);padding:8px 0;font-weight:600;}
.btn-ghost .arrow{transition:transform .25s ease;display:inline-block;}
.btn-ghost:hover{color:var(--primary-deep);text-decoration:none;}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn:disabled,.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-sm{padding:10px 20px;font-size:15px;}

/* ---------- 页头横幅 ---------- */
.banner{
  position:relative;
  padding:132px 0 56px;
  min-height:300px;
  background-image:linear-gradient(105deg,rgba(31,122,107,.88) 0%,rgba(18,33,30,.62) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.banner::after{
  content:"";
  position:absolute;
  right:-60px;
  bottom:-80px;
  width:420px;
  height:300px;
  background:radial-gradient(circle at 60% 60%,rgba(201,162,39,.22) 0%,rgba(201,162,39,0) 70%);
  pointer-events:none;
}
.banner-inner{position:relative;z-index:2;max-width:820px;}
.banner-eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:2px;
  padding:6px 14px;
  border:1px solid rgba(255,255,255,.42);
  border-radius:var(--r-pill);
  color:#F2EFE8;
  background:rgba(255,255,255,.08);
  margin-bottom:18px;
}
.banner h1{
  color:#fff;
  font-size:44px;
  font-weight:800;
  line-height:1.2;
  letter-spacing:.5px;
  margin-bottom:16px;
}
.banner-lead{
  font-size:17px;
  line-height:1.8;
  color:rgba(255,255,255,.92);
  max-width:720px;
  margin-bottom:0;
}
.breadcrumb{
  padding:22px 0 0;
  font-size:14px;
  color:var(--text-3);
}
.breadcrumb ol{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:0;
  padding:0;
}
.breadcrumb li{margin:0;display:flex;align-items:center;gap:8px;}
.breadcrumb li::after{content:"/";color:var(--text-3);}
.breadcrumb li:last-child::after{content:"";}
.breadcrumb .current{color:var(--text-3);}

/* ---------- 板块标题 ---------- */
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-title{
  font-size:34px;
  font-weight:700;
  line-height:1.3;
  position:relative;
  padding-left:18px;
  margin-bottom:14px;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;
  top:.18em;
  bottom:.18em;
  width:4px;
  border-radius:4px;
  background:var(--primary);
}
.section-head.center .section-title{padding-left:0;}
.section-head.center .section-title::before{display:none;}
.section-sub{font-size:16px;color:var(--text-2);margin:0;}
.lead-text{font-size:17px;line-height:1.85;color:var(--text-2);}

/* ---------- 概览 ---------- */
.overview-grid{
  display:grid;
  grid-template-columns:1.35fr .95fr;
  gap:40px;
  align-items:start;
}
.prose p{font-size:17px;line-height:1.85;color:var(--text-2);}
.check-list{list-style:none;padding:0;margin:0;}
.check-list li{
  position:relative;
  padding-left:30px;
  margin-bottom:14px;
  font-size:16px;
  color:var(--text);
  line-height:1.75;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:14px;
  height:8px;
  border-left:2px solid var(--primary);
  border-bottom:2px solid var(--primary);
  transform:rotate(-45deg);
}
.side-card{
  background:var(--surface);
  border:1px solid var(--border-color);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--shadow);
}
.side-card h3{font-size:19px;margin-bottom:14px;}
.side-card .stamp{
  display:inline-block;
  font-size:12px;
  letter-spacing:1px;
  color:var(--gold);
  border:1px solid var(--gold-line);
  border-radius:6px;
  padding:2px 8px;
  margin-bottom:14px;
}
.side-list{list-style:none;padding:0;margin:0;}
.side-list li{
  display:flex;
  justify-content:space-between;
  gap:14px;
  padding:12px 0;
  border-bottom:1px dashed var(--gold-line);
  font-size:15px;
  color:var(--text-2);
  margin:0;
}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list strong{color:var(--text);font-weight:600;}

/* ---------- 图文交错 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split.reverse .split-media{order:2;}
.split.reverse .split-body{order:1;}
.media-frame{
  position:relative;
  width:100%;
  aspect-ratio:4/3;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:linear-gradient(135deg,var(--primary) 0%,#1a6357 55%,var(--dark) 100%);
  box-shadow:var(--shadow);
}
.media-frame::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 20% 80%,rgba(201,162,39,.28) 0%,rgba(201,162,39,0) 55%),
    radial-gradient(circle at 80% 20%,rgba(255,255,255,.16) 0%,rgba(255,255,255,0) 60%);
  z-index:1;
  pointer-events:none;
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform var(--ease);
}
.media-frame:hover img{transform:scale(1.03);}
.media-caption{
  font-size:13px;
  color:var(--text-3);
  text-align:center;
  margin-top:12px;
}
.split-body h3{font-size:22px;margin-bottom:16px;}
.split-body p{font-size:16px;color:var(--text-2);line-height:1.85;}
.tier-list{list-style:none;padding:0;margin:0;}
.tier-list li{
  background:var(--surface);
  border:1px solid var(--border-color);
  border-radius:var(--r-card);
  padding:16px 18px;
  margin-bottom:12px;
  box-shadow:var(--shadow);
}
.tier-list .tier-name{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  background:var(--primary-soft);
  border-radius:var(--r-pill);
  padding:3px 12px;
  margin-right:8px;
}
.tier-list .tier-desc{font-size:15px;color:var(--text-2);display:block;margin-top:8px;}

/* ---------- 数值徽章带 ---------- */
.metrics{
  background:var(--bg-alt);
  border-top:1px solid var(--border-color);
  border-bottom:1px solid var(--border-color);
  padding:48px 0;
}
.metrics-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.metric{
  text-align:center;
  padding:8px 12px;
  position:relative;
}
.metric + .metric::before{
  content:"";
  position:absolute;
  left:-12px;
  top:22%;
  bottom:22%;
  width:1px;
  background:var(--gold-line);
}
.metric-num{
  display:block;
  font-size:40px;
  font-weight:800;
  line-height:1.1;
  color:var(--accent);
  letter-spacing:-.5px;
}
.metric-label{
  display:block;
  margin-top:8px;
  font-size:14px;
  color:var(--text-2);
}

/* ---------- 场景卡片 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.scene-card{
  background:var(--surface);
  border:1px solid var(--border-color);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.scene-card h3{font-size:20px;margin-bottom:10px;}
.scene-card p{font-size:15px;color:var(--text-2);margin:0;}
.scene-tag{
  display:inline-block;
  font-size:13px;
  color:var(--primary);
  background:var(--primary-soft);
  border-radius:var(--r-pill);
  padding:3px 12px;
  margin-bottom:12px;
}

/* ---------- 流程步骤 ---------- */
.steps{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.steps::before{
  content:"";
  position:absolute;
  left:9%;
  right:9%;
  top:23px;
  border-top:1px dashed var(--primary-soft-2);
}
.step{
  position:relative;
  background:var(--surface);
  border:1px solid var(--border-color);
  border-radius:var(--r-card);
  padding:26px 22px;
  box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;height:46px;
  border-radius:50%;
  border:1px solid var(--gold);
  background:var(--surface);
  color:var(--gold);
  font-size:15px;
  font-weight:700;
  letter-spacing:.5px;
  margin-bottom:16px;
  position:relative;
  z-index:2;
}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:15px;color:var(--text-2);margin-bottom:14px;}
.step-time{
  display:inline-block;
  font-size:13px;
  color:var(--text-2);
  background:var(--bg-alt);
  border:1px solid var(--border-color);
  border-radius:var(--r-pill);
  padding:3px 12px;
}

/* ---------- FAQ ---------- */
.faq{max-width:840px;margin:0 auto;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--border-color);
  border-radius:var(--r-card);
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:var(--shadow);
  position:relative;
  transition:box-shadow var(--ease);
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--primary);
  opacity:0;
  transition:opacity .2s ease;
}
.faq-item.is-open::before{opacity:1;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  background:none;
  border:0;
  padding:20px 22px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
}
.faq-icon{
  flex:0 0 28px;
  width:28px;height:28px;
  border-radius:50%;
  border:1.5px solid var(--primary);
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  line-height:1;
  transition:transform .2s ease,background .2s ease;
}
.faq-item.is-open .faq-icon{background:var(--primary-soft);transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease;
}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a-inner{padding:0 22px 22px;font-size:16px;color:var(--text-2);line-height:1.8;}

/* ---------- CTA ---------- */
.cta-dark{
  background:var(--dark);
  color:#E7EFEC;
  position:relative;
  overflow:hidden;
}
.cta-dark::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 12% 20%,rgba(31,122,107,.42) 0%,rgba(31,122,107,0) 55%),
    radial-gradient(circle at 88% 90%,rgba(201,162,39,.16) 0%,rgba(201,162,39,0) 60%);
  pointer-events:none;
}
.cta-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:start;
}
.cta-dark h2{color:#fff;font-size:32px;margin-bottom:16px;}
.cta-dark p{color:rgba(231,239,236,.82);font-size:16px;line-height:1.85;}
.cta-points{list-style:none;padding:0;margin:22px 0 0;}
.cta-points li{
  position:relative;
  padding-left:20px;
  margin-bottom:10px;
  color:rgba(231,239,236,.86);
  font-size:15px;
}
.cta-points li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--gold);
}
.form-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);
  padding:28px;
}
.form-field{margin-bottom:18px;}
.form-field label{
  display:block;
  font-size:14px;
  color:rgba(231,239,236,.86);
  margin-bottom:8px;
}
.form-field .req{color:var(--accent);margin-left:2px;}
.form-field input,
.form-field select{
  width:100%;
  height:48px;
  padding:0 14px;
  font-size:15px;
  color:#fff;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-input);
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  appearance:none;
  -webkit-appearance:none;
}
.form-field input::placeholder{color:rgba(231,239,236,.45);}
.form-field input:focus,
.form-field select:focus{
  border-color:var(--primary);
  background:rgba(255,255,255,.12);
  box-shadow:0 0 0 3px rgba(31,122,107,.28);
}
.form-field select{
  background-image:linear-gradient(45deg,transparent 50%,#9FB3AE 50%),linear-gradient(135deg,#9FB3AE 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
  background-size:6px 6px,6px 6px;
  background-repeat:no-repeat;
}
.form-field select option{color:#17211F;}
.form-tip{font-size:13px;color:rgba(231,239,236,.6);margin:14px 0 0;}
.form-actions{margin-top:6px;}

/* ---------- 返回 ---------- */
.back-row{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
  align-items:center;
  justify-content:space-between;
  padding:36px 0 0;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark);
  color:rgba(231,239,236,.72);
  border-top:1px solid var(--gold-line);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;font-size:17px;font-weight:700;}
.footer-slogan{font-size:15px;line-height:1.8;color:rgba(231,239,236,.72);margin:0;max-width:320px;}
.footer-col h4{
  color:#fff;
  font-size:16px;
  margin-bottom:16px;
  font-weight:600;
}
.footer-links{list-style:none;padding:0;margin:0;}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  font-size:15px;
  color:rgba(231,239,236,.72);
  text-decoration:none;
}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:2px;}
.footer-contact{list-style:none;padding:0;margin:0;}
.footer-contact li{font-size:15px;line-height:1.8;margin-bottom:10px;color:rgba(231,239,236,.72);}
.footer-contact strong{color:#fff;font-weight:600;margin-right:6px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:22px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:14px;
  color:rgba(231,239,236,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:64px 0;}
  .banner{padding:120px 0 48px;}
  .banner h1{font-size:36px;}
  .overview-grid{grid-template-columns:1fr;gap:28px;}
  .split{gap:36px;}
  .split-body h3{font-size:20px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .steps::before{display:none;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1.4fr 1fr;}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-shell{padding:0 14px;}
  .nav-links{
    position:absolute;
    top:calc(100% + 12px);
    left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:#fff;
    border:1px solid var(--border-color);
    border-radius:20px;
    padding:10px;
    box-shadow:var(--shadow-hover);
    display:none;
    max-height:70vh;
    overflow-y:auto;
  }
  .nav-links.is-open{display:flex;}
  .nav-link{
    line-height:44px;
    padding:0 14px;
    border-radius:12px;
    font-size:16px;
  }
  .nav-link.is-active{background:var(--primary);color:#fff;font-weight:600;}
  .nav-link.is-active::after{display:none;}
  .nav-link:hover{background:var(--primary-soft);}
  .brand-text{font-size:16px;}
}
@media (max-width:768px){
  .section{padding:48px 0;}
  .banner{padding:110px 0 40px;min-height:260px;}
  .banner h1{font-size:32px;}
  .banner-lead{font-size:16px;}
  .section-title{font-size:24px;}
  .split{grid-template-columns:1fr;gap:24px;}
  .split.reverse .split-media{order:1;}
  .split.reverse .split-body{order:2;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:28px 16px;}
  .metric + .metric::before{display:none;}
  .metric-num{font-size:34px;}
  .scene-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:28px;}
  .footer-slogan{max-width:none;}
  .cta-dark h2{font-size:26px;}
  .faq-q{font-size:16px;padding:18px;}
  .faq-a-inner{padding:0 18px 18px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .banner h1{font-size:30px;}
  .btn{width:100%;}
  .nav-cta{width:auto;}
  .brand-text{font-size:15px;}
  .side-card,.form-card{padding:22px;}
  .metrics-grid{grid-template-columns:1fr;}
  .metric-num{font-size:32px;}
}