/* roulang page: index */
:root{
  --ink:#14161A;
  --ink-2:#4A4F55;
  --ink-3:#8A8F96;
  --brand:#1E3A34;
  --brand-dark:#142824;
  --brand-light:#2C524A;
  --accent:#C0552F;
  --bg:#F7F4EF;
  --bg-2:#EFEAE1;
  --card:#FFFFFF;
  --dark:#16211E;
  --line:#E3DED4;
  --line-soft:#EDE8DF;
  --radius-card:14px;
  --radius-img:12px;
  --shadow:0 1px 2px rgba(20,22,26,.04),0 12px 32px -18px rgba(20,22,26,.18);
  --shadow-hover:0 18px 40px -20px rgba(20,22,26,.28);
  --ease:cubic-bezier(.22,.61,.36,1);

  --bs-primary:#1E3A34;
  --bs-body-bg:#F7F4EF;
  --bs-body-color:#14161A;
  --bs-border-color:#E3DED4;
  --bs-link-color:#1E3A34;
  --bs-link-hover-color:#C0552F;
  --bs-font-sans-serif:-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:72px;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--brand)}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
section[id]{scroll-margin-top:96px}

.js-ready .reveal{opacity:0;transform:translateY(14px)}
.js-ready .reveal.is-visible{opacity:1;transform:none;transition:opacity .42s var(--ease),transform .42s var(--ease)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:rgba(247,244,239,.88);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px -20px rgba(20,22,26,.5)}
.hd-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .3s var(--ease)}
.site-header.is-scrolled .hd-inner{height:60px}
.brand{display:flex;align-items:baseline;gap:9px;flex:0 0 auto}
.brand-mark{font-size:24px;font-weight:800;letter-spacing:-.01em;color:var(--brand);line-height:1;transition:font-size .3s var(--ease)}
.site-header.is-scrolled .brand-mark{font-size:22px}
.brand-sub{font-size:11.5px;letter-spacing:.08em;color:var(--ink-3);white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:36px}
.nav-link{position:relative;font-size:15px;letter-spacing:.02em;color:var(--ink-2);padding:6px 0;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .32s var(--ease)}
.nav-link:hover{color:var(--brand)}
.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)}
.hd-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 20px;
  border:1px solid var(--brand);border-radius:999px;background:transparent;
  color:var(--brand);font-size:14px;letter-spacing:.02em;
  transition:background .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.btn-ghost:hover{background:var(--brand);color:#fff;transform:translateY(-2px)}
.nav-toggle{
  display:none;position:relative;width:44px;height:44px;border:0;background:transparent;padding:0;cursor:pointer;
}
.nav-toggle span{position:absolute;left:11px;right:11px;height:1.5px;background:var(--ink);transition:all .3s var(--ease)}
.nav-toggle span:nth-child(1){top:16px}
.nav-toggle span:nth-child(2){top:22px}
.nav-toggle span:nth-child(3){top:28px}
.nav-toggle.is-open span:nth-child(1){top:22px;transform:rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){top:22px;transform:rotate(-45deg)}
.mobile-drawer{
  position:fixed;top:72px;left:0;right:0;bottom:0;z-index:1039;
  background:var(--bg);padding:8px 24px 48px;overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-link{display:flex;align-items:center;gap:12px;padding:18px 0;border-bottom:1px solid var(--line-soft);font-size:21px;color:var(--ink)}
.drawer-link .drawer-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:0;transition:opacity .25s}
.drawer-link.is-active{color:var(--brand);font-weight:600}
.drawer-link.is-active .drawer-dot{opacity:1}
.drawer-cta{margin-top:28px}

/* ---------- 按钮 ---------- */
.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid var(--brand);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:background .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.btn-solid:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-2px)}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid var(--line);
  background:transparent;color:var(--brand);font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:background .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.btn-line:hover{background:var(--bg-2);border-color:var(--brand);transform:translateY(-2px)}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--brand);position:relative}
.link-arrow svg{transition:transform .28s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}
.link-arrow span{background-image:linear-gradient(currentColor,currentColor);background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .3s var(--ease)}
.link-arrow:hover span{background-size:100% 1px}

/* ---------- 通用区块 ---------- */
.section{padding:104px 0}
.section-alt{background:var(--bg-2)}
.section-dark{background:var(--dark);color:rgba(255,255,255,.82)}
.section-dark h2,.section-dark h3{color:#fff}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.16em;color:var(--accent);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);display:inline-block}
.section-dark .eyebrow{color:#E8A184}
.sec-title{font-size:clamp(26px,3.2vw,40px);line-height:1.25;font-weight:700;letter-spacing:-.01em;margin-top:18px}
.sec-desc{color:var(--ink-2);font-size:16.5px;max-width:680px;margin-top:18px}
.section-dark .sec-desc{color:rgba(255,255,255,.72)}
.sec-head{margin-bottom:56px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap}
.sticky-col{position:sticky;top:104px}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Hero ---------- */
.hero{position:relative;padding:88px 0 96px;overflow:hidden}
.hero::before{
  content:"hth";position:absolute;right:-3%;top:4%;z-index:0;
  font-size:clamp(160px,24vw,400px);font-weight:800;line-height:1;
  color:var(--brand);opacity:.035;letter-spacing:-.05em;pointer-events:none;user-select:none;
}
.hero-grid{position:relative;z-index:1}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;
  border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.7);
  font-size:13px;letter-spacing:.04em;color:var(--ink-2);
}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero-title{
  font-size:clamp(34px,5.2vw,58px);line-height:1.15;letter-spacing:-.02em;font-weight:700;
  margin:22px 0 22px;max-width:14em;
}
.hero-lead{font-size:17px;line-height:1.85;color:var(--ink-2);max-width:600px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:34px 0 40px}
.hero-points{border-top:1px solid var(--line);max-width:600px}
.hero-point{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--line-soft);font-size:15px;color:var(--ink-2)}
.hero-point .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto}
.hero-visual{position:relative;margin-top:8px}
.hero-media{aspect-ratio:4/3;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);background:var(--bg-2)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.float-card{
  position:absolute;right:16px;bottom:-18px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:14px 20px;box-shadow:var(--shadow);min-width:180px;
}
.float-card .fc-label{font-size:12px;letter-spacing:.08em;color:var(--ink-3)}
.float-card .fc-value{font-size:19px;font-weight:700;color:var(--brand);margin-top:2px}

/* ---------- 信任条 ---------- */
.trust-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0}
.trust-list{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px 32px}
.trust-item{font-size:14px;letter-spacing:.06em;color:var(--ink-3)}

/* ---------- 服务条目流 ---------- */
.svc-list{margin-top:8px}
.svc-row{
  display:grid;grid-template-columns:96px 1fr 32px;gap:28px;align-items:start;
  padding:32px 20px;border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),padding-left .3s var(--ease);
}
.svc-row:first-child{border-top:1px solid var(--line)}
.svc-row:hover{background:var(--bg-2);padding-left:28px}
.svc-num{font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1;color:var(--brand);opacity:.32;font-variant-numeric:tabular-nums;transition:opacity .3s var(--ease),color .3s var(--ease)}
.svc-row:hover .svc-num{opacity:.95;color:var(--accent)}
.svc-title{font-size:20px;font-weight:600;margin:0 0 10px;display:inline-block;position:relative}
.svc-title::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--accent);transition:width .32s var(--ease)}
.svc-row:hover .svc-title::after{width:100%}
.svc-text{color:var(--ink-2);font-size:15.5px;max-width:720px}
.svc-arrow{color:var(--ink-3);display:flex;justify-content:flex-end;padding-top:6px;transition:transform .3s var(--ease),color .3s var(--ease)}
.svc-row:hover .svc-arrow{transform:translateX(6px);color:var(--accent)}

/* ---------- 深色数据区 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid rgba(255,255,255,.14);margin-top:8px}
.stat-item{padding:40px 28px 34px;border-right:1px solid rgba(255,255,255,.14);border-bottom:1px solid rgba(255,255,255,.14)}
.stat-item:nth-child(4n){border-right:0}
.stat-num{
  font-size:clamp(38px,5.4vw,62px);line-height:1;font-weight:700;color:#fff;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  font-family:"Songti SC","Source Han Serif SC",Georgia,serif;
}
.stat-title{margin-top:20px;font-size:17px;font-weight:600;color:#fff}
.stat-note{margin-top:8px;font-size:14.5px;color:rgba(255,255,255,.66);line-height:1.7}

/* ---------- 案例 ---------- */
.case-card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
  height:100%;
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D8D1C5}
.case-media{overflow:hidden;background:var(--bg-2)}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.case-card:hover .case-media img{transform:scale(1.03)}
.case-media-lg{aspect-ratio:16/9}
.case-media-sm{aspect-ratio:4/3}
.case-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.case-card-lg .case-body{padding:28px 32px 30px}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  padding:5px 12px;border-radius:999px;background:var(--bg-2);
  font-size:12.5px;letter-spacing:.04em;color:var(--brand-light);
}
.case-title{font-size:19px;font-weight:600;line-height:1.5}
.case-card-lg .case-title{font-size:23px}
.case-desc{color:var(--ink-2);font-size:15px}

/* ---------- 流程 ---------- */
.steps{position:relative;padding-left:34px}
.steps::before{content:"";position:absolute;left:8px;top:10px;bottom:10px;width:1px;background:var(--line)}
.step{position:relative;padding:0 0 40px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:-34px;top:9px;width:17px;height:17px;border-radius:50%;background:var(--bg);border:1px solid var(--brand);}
.step::after{content:"";position:absolute;left:-29px;top:14px;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.step-label{font-size:13px;letter-spacing:.08em;color:var(--ink-3)}
.step-title{font-size:20px;font-weight:600;margin:6px 0 10px}
.step-text{color:var(--ink-2);font-size:15.5px;max-width:720px}

/* ---------- 最新信息（CMS） ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.news-card{
  display:flex;flex-direction:column;gap:16px;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D8D1C5}
.news-top{display:flex;align-items:center;justify-content:space-between;gap:16px}
.news-title{font-size:18px;font-weight:600;line-height:1.55;margin:0}
.news-card:hover .news-title{color:var(--brand)}
.news-excerpt{color:var(--ink-2);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line-soft)}
.news-date{font-size:13px;color:var(--ink-3);letter-spacing:.02em}
.cms-empty{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:48px 24px;text-align:center;color:var(--ink-3);background:#fff;
}
.cms-empty .link-arrow{margin-top:14px}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top: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:26px 0;font-size:17px;font-weight:600;line-height:1.6;transition:color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;font-weight:400;color:var(--ink-3);line-height:1.2;flex:0 0 auto;transition:color .25s var(--ease)}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{content:"−";color:var(--accent)}
.faq-body{padding:0 0 28px;color:var(--ink-2);font-size:16px;line-height:1.85;max-width:820px}

/* ---------- 联系与表单 ---------- */
.contact-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:36px 34px;box-shadow:var(--shadow);
}
.form-field{margin-bottom:20px}
.form-label{display:block;font-size:13px;letter-spacing:.02em;color:var(--ink-3);margin-bottom:8px}
.form-control-x{
  width:100%;height:48px;padding:0 16px;border:1px solid var(--line);border-radius:12px;
  background:#fff;font-size:15px;color:var(--ink);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.form-control-x::placeholder{color:#B4B8BD}
.form-control-x:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(30,58,52,.14)}
textarea.form-control-x{height:auto;min-height:130px;padding:14px 16px;resize:vertical;line-height:1.8}
.form-hint{font-size:13px;color:var(--ink-3);margin-top:14px}
.contact-side{display:flex;flex-direction:column;gap:18px}
.contact-item{display:flex;gap:14px;padding:20px 0;border-bottom:1px solid var(--line-soft)}
.contact-item:first-child{border-top:1px solid var(--line-soft)}
.contact-icon{width:20px;flex:0 0 auto;color:var(--brand);margin-top:5px}
.contact-k{font-size:15px;font-weight:600}
.contact-v{font-size:15px;color:var(--ink-2);margin-top:4px}

/* ---------- CTA 条 ---------- */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:40px 44px;border-radius:var(--radius-card);
  background:var(--brand);color:#fff;
}
.cta-bar h3{font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.4}
.cta-bar p{color:rgba(255,255,255,.78);font-size:15px;margin-top:10px;max-width:620px}
.btn-on-dark{
  display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 28px;
  border-radius:999px;border:1px solid rgba(255,255,255,.5);background:transparent;color:#fff;
  font-size:15px;font-weight:600;transition:background .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.btn-on-dark:hover{background:#fff;border-color:#fff;color:var(--brand);transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:76px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px;padding-bottom:52px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand .brand-mark{color:#fff;font-size:26px}
.footer-brand .brand-sub{color:rgba(255,255,255,.5)}
.footer-desc{margin-top:18px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:320px}
.footer-title{font-size:14px;font-weight:600;letter-spacing:.08em;color:#fff;margin-bottom:18px}
.footer-link{display:block;padding:7px 0;font-size:14px;color:rgba(255,255,255,.66);transition:color .25s var(--ease)}
.footer-link:hover{color:#fff}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:26px 0;font-size:13px;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-main{gap:28px}
  .svc-row{grid-template-columns:80px 1fr 28px;gap:22px}
}
@media (max-width:991.98px){
  .nav-main{display:none}
  .hd-actions .btn-ghost{display:none}
  .nav-toggle{display:block}
  body{padding-top:72px}
  .section{padding:76px 0}
  .hero{padding:56px 0 84px}
  .hero-title{max-width:none}
  .sticky-col{position:static;top:auto}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-item:nth-child(2n){border-right:0}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}
  .cta-bar{padding:34px 30px}
}
@media (max-width:767.98px){
  .news-grid{grid-template-columns:1fr}
  .hero-visual{margin-top:48px}
  .float-card{right:12px;bottom:-16px;padding:12px 16px;min-width:0}
  .svc-row{grid-template-columns:56px 1fr;gap:18px;padding:26px 12px}
  .svc-arrow{display:none}
  .case-card-lg .case-title{font-size:20px}
  .contact-panel{padding:28px 22px}
}
@media (max-width:575.98px){
  .container{padding-left:20px;padding-right:20px}
  .section{padding:60px 0}
  .hero{padding:44px 0 72px}
  .brand-sub{display:none}
  .brand-mark{font-size:22px}
  .hero-actions{gap:12px}
  .hero-actions .btn-solid,.hero-actions .btn-line{width:100%}
  .stat-grid{grid-template-columns:1fr}
  .stat-item{border-right:0}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:40px}
  .cta-bar{padding:28px 22px}
  .cta-bar .btn-on-dark{width:100%}
  .sec-head{margin-bottom:38px}
  .svc-row{grid-template-columns:1fr;gap:10px}
  .svc-num{font-size:24px}
  .faq-item summary{font-size:16px;padding:20px 0}
  .case-card-lg .case-body{padding:20px 20px 24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .js-ready .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#1E3A34;
  --brand-dark:#142824;
  --brand-light:#2C524A;
  --accent:#C0552F;
  --bg:#F7F4EF;
  --bg-2:#EFEAE1;
  --card:#FFFFFF;
  --dark:#16211E;
  --ink:#14161A;
  --ink-2:#4A4F55;
  --ink-3:#8A8F96;
  --line:#E3DED4;
  --line-2:#EDE8DF;
  --radius-card:14px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04), 0 12px 32px -18px rgba(20,22,26,.18);
  --shadow-2:0 18px 40px -20px rgba(20,22,26,.22);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-serif:"Songti SC","Source Han Serif SC","Noto Serif SC",Georgia,serif;
  --container:1200px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .22s ease, border-color .22s ease, background-color .22s ease, transform .22s ease;}
a:hover{color:var(--accent);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,244,239,.88);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:padding .25s ease, box-shadow .25s ease;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .25s ease;
}
.site-header.is-compact .header-inner{height:60px;}
.site-header.is-compact{box-shadow:0 10px 30px -24px rgba(20,22,26,.35);}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  color:var(--ink);
  flex-shrink:0;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  font-size:24px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--brand);
  line-height:1;
}
.brand-sub{
  font-size:12px;
  color:var(--ink-3);
  letter-spacing:.08em;
  white-space:nowrap;
}
.nav-main{display:flex;align-items:center;gap:36px;}
.nav-link{
  position:relative;
  font-size:15px;
  letter-spacing:.02em;
  color:var(--ink-2);
  padding:6px 0;
  line-height:1.4;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;
  bottom:-2px;
  height:2px;
  background:transparent;
  transition:background-color .22s ease;
}
.nav-link:hover{color:var(--ink);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{background:var(--accent);}
.header-actions{display:flex;align-items:center;gap:16px;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 24px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s ease, background-color .22s ease, color .22s ease, border-color .22s ease, box-shadow .22s ease;
  text-align:center;
}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand);}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-1);}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:rgba(30,58,52,.06);border-color:var(--brand-dark);color:var(--brand-dark);transform:translateY(-2px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff;transform:translateY(-2px);}
.btn-link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  padding:0;
  border:0;
  background:none;
}
.btn-link-arrow .arrow{transition:transform .22s ease;}
.btn-link-arrow:hover .arrow{transform:translateX(4px);}
.btn-link-arrow:hover{color:var(--accent);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:transparent;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:1.5px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .25s ease, opacity .25s ease;
}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--bg);
  padding:8px 0 20px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:block;
  font-size:22px;
  color:var(--ink);
  padding:16px 24px;
  border-bottom:1px solid var(--line-2);
  position:relative;
}
.mobile-drawer a.is-active{color:var(--brand);font-weight:700;}
.mobile-drawer a.is-active::before{
  content:"";
  position:absolute;
  left:10px;top:50%;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
  transform:translateY(-50%);
}
.mobile-drawer .drawer-cta{padding:20px 24px 0;border-bottom:0;}
.mobile-drawer .drawer-cta .btn{width:100%;}

/* ---------- Page head ---------- */
.page-head{
  padding:56px 0 0;
}
.crumb{
  font-size:13px;
  letter-spacing:.02em;
  color:var(--ink-3);
  margin-bottom:20px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--line);}
.page-head h1{
  font-size:clamp(30px,4.4vw,48px);
  line-height:1.2;
  font-weight:700;
  letter-spacing:-.02em;
  margin:0 0 20px;
  max-width:940px;
}
.lead-text{
  font-size:17px;
  line-height:1.9;
  color:var(--ink-2);
  max-width:820px;
  margin:0 0 28px;
}
.head-banner{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  aspect-ratio:21/7;
  background:var(--bg-2);
  margin-top:8px;
}
.head-banner img{width:100%;height:100%;object-fit:cover;}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--brand);
  background:rgba(30,58,52,.07);
  border-radius:var(--radius-pill);
  padding:6px 14px;
  line-height:1.5;
}
.tag.is-accent{color:var(--accent);background:rgba(192,85,47,.09);}

/* ---------- Main layout ---------- */
.main-wrap{padding:72px 0 96px;}
.layout{
  display:grid;
  grid-template-columns:250px minmax(0,1fr);
  gap:64px;
  align-items:start;
}
.toc{
  position:sticky;
  top:96px;
  border-left:2px solid var(--line);
  padding-left:20px;
}
.toc-title{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--ink-3);
  margin:0 0 16px;
  text-transform:uppercase;
}
.toc ol{list-style:none;margin:0;padding:0;}
.toc li{margin-bottom:14px;}
.toc a{
  font-size:15px;
  color:var(--ink-2);
  display:block;
  line-height:1.6;
}
.toc a:hover{color:var(--brand);}
.toc .toc-num{
  display:inline-block;
  width:22px;
  color:var(--ink-3);
  font-size:12px;
  font-variant-numeric:tabular-nums;
}
.toc-note{
  margin-top:28px;
  padding-top:20px;
  border-top:1px solid var(--line-2);
  font-size:13px;
  color:var(--ink-3);
  line-height:1.8;
}

.content-section{
  padding-bottom:48px;
  margin-bottom:48px;
  border-bottom:1px solid var(--line-2);
}
.content-section:last-of-type{border-bottom:0;margin-bottom:0;}
.content-section h2{
  font-size:clamp(22px,2.4vw,28px);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
  margin:0 0 8px;
  display:flex;
  gap:14px;
  align-items:baseline;
}
.sec-num{
  font-size:14px;
  font-weight:700;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
  flex-shrink:0;
}
.sec-sub{
  font-size:14px;
  color:var(--ink-3);
  letter-spacing:.02em;
  margin:0 0 22px;
  padding-left:38px;
}
.content-section p{
  color:var(--ink-2);
  margin:0 0 1.2em;
}
.content-section p:last-child{margin-bottom:0;}
.check-list{
  list-style:none;
  margin:22px 0 0;
  padding:0;
  border-top:1px solid var(--line-2);
}
.check-list li{
  position:relative;
  padding:14px 0 14px 24px;
  border-bottom:1px solid var(--line-2);
  color:var(--ink-2);
  font-size:16px;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:24px;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--accent);
}
.figure-block{
  margin:28px 0;
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--bg-2);
  aspect-ratio:16/7;
}
.figure-block img{width:100%;height:100%;object-fit:cover;}
.figure-cap{
  font-size:13px;
  color:var(--ink-3);
  margin-top:10px;
  letter-spacing:.02em;
}
.note-box{
  border-left:3px solid var(--brand);
  background:var(--bg-2);
  padding:20px 24px;
  border-radius:0 10px 10px 0;
  color:var(--ink-2);
  font-size:16px;
  margin:26px 0 0;
}
.step-list{
  list-style:none;
  counter-reset:step;
  margin:26px 0 0;
  padding:0;
  position:relative;
}
.step-list::before{
  content:"";
  position:absolute;
  left:15px;top:12px;bottom:12px;
  width:1px;
  background:var(--line);
}
.step-list li{
  position:relative;
  padding:0 0 24px 48px;
  counter-increment:step;
}
.step-list li:last-child{padding-bottom:0;}
.step-list li::before{
  content:counter(step);
  position:absolute;
  left:0;top:2px;
  width:31px;height:31px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--card);
  color:var(--brand);
  font-size:13px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  font-variant-numeric:tabular-nums;
}
.step-list strong{display:block;font-size:17px;margin-bottom:4px;color:var(--ink);}
.step-list span{color:var(--ink-2);font-size:16px;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--dark);
  color:#fff;
  padding:72px 0;
}
.cta-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-band h2{
  font-size:clamp(24px,2.8vw,32px);
  font-weight:700;
  margin:0 0 12px;
  letter-spacing:-.01em;
}
.cta-band p{
  margin:0;
  color:rgba(255,255,255,.72);
  max-width:620px;
  font-size:16px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.72);
  padding:72px 0 32px;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand-mark{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.5);}
.footer-desc{
  margin:18px 0 0;
  font-size:14px;
  line-height:1.9;
  color:rgba(255,255,255,.6);
  max-width:320px;
}
.footer-title{
  font-size:14px;
  font-weight:600;
  color:#fff;
  letter-spacing:.04em;
  margin:0 0 18px;
}
.footer-link{
  display:block;
  font-size:14px;
  color:rgba(255,255,255,.66);
  padding:7px 0;
  line-height:1.6;
}
.footer-link:hover{color:#fff;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.5);
  letter-spacing:.02em;
}

/* ---------- Animations ---------- */
.fade-up{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .42s cubic-bezier(.22,.61,.36,1), transform .42s cubic-bezier(.22,.61,.36,1);
}
.fade-up.is-visible{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .fade-up{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .layout{grid-template-columns:220px minmax(0,1fr);gap:44px;}
}
@media (max-width:991.98px){
  .nav-main{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn-outline-light{display:none;}
  .layout{grid-template-columns:1fr;gap:32px;}
  .toc{
    position:static;
    border-left:0;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:20px 0;
  }
  .toc ol{display:flex;flex-wrap:wrap;gap:10px 20px;}
  .toc li{margin-bottom:0;}
  .toc-note{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .main-wrap{padding:52px 0 72px;}
  .head-banner{aspect-ratio:16/9;}
  .figure-block{aspect-ratio:16/10;}
  .content-section{padding-bottom:36px;margin-bottom:36px;}
  .content-section h2{flex-direction:column;gap:4px;}
  .sec-sub{padding-left:0;}
  .cta-band{padding:56px 0;}
  .site-footer{padding:56px 0 28px;}
}
@media (max-width:575.98px){
  .container{padding-left:20px;padding-right:20px;}
  .page-head{padding-top:36px;}
  .header-inner{height:64px;}
  .brand-mark{font-size:21px;}
  .brand-sub{font-size:11px;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .header-actions .btn-outline-light{display:none;}
}

/* roulang page: article */
:root{
  --brand:#1E3A34;
  --brand-dark:#142824;
  --brand-light:#2C524A;
  --accent:#C0552F;
  --bg:#F7F4EF;
  --bg-2:#EFEAE1;
  --card:#FFFFFF;
  --dark:#16211E;
  --ink:#14161A;
  --ink-2:#4A4F55;
  --ink-3:#8A8F96;
  --line:#E3DED4;
  --line-soft:#EDE8DF;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --radius-card:16px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04), 0 12px 32px -18px rgba(20,22,26,.18);
  --shadow-2:0 18px 40px -20px rgba(20,22,26,.24);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (max-width:576px){.container{padding:0 20px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(247,244,239,.88);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .25s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:baseline;gap:7px;text-decoration:none;white-space:nowrap;}
.brand-mark{font-size:24px;font-weight:800;letter-spacing:-.02em;color:var(--brand);line-height:1;}
.brand-sub{font-size:11px;letter-spacing:.08em;color:var(--ink-3);}
.nav-main{display:flex;align-items:center;gap:36px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:22px 0;
  font-size:15px;
  letter-spacing:.02em;
  color:var(--ink-2);
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:16px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.header-actions{display:flex;align-items:center;gap:12px;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:all .22s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);}
.btn-ghost{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-ghost:hover{background:rgba(30,58,52,.07);border-color:var(--brand);color:var(--brand);}
.btn-sm{padding:9px 20px;font-size:14px;min-height:40px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
}
.link-arrow .arrow{transition:transform .22s var(--ease);}
.link-arrow:hover .arrow{transform:translateX(4px);}

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;height:44px;
  padding:0 10px;
  border:0;
  background:transparent;
  cursor:pointer;
}
.nav-toggle span{display:block;height:1.5px;width:100%;background:var(--ink);border-radius:2px;transition:.25s var(--ease);}

.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:1040;
  background:var(--bg);
  padding:88px 24px 40px;
  display:none;
  flex-direction:column;
}
.mobile-drawer.is-open{display:flex;}
.mobile-drawer .drawer-link{
  display:block;
  padding:20px 0;
  font-size:22px;
  color:var(--ink);
  border-bottom:1px solid var(--line-soft);
}
.mobile-drawer .drawer-link.is-active{color:var(--brand);font-weight:600;}
.mobile-drawer .drawer-link.is-active::before{
  content:"";
  display:inline-block;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
  margin-right:10px;
  vertical-align:middle;
}
.drawer-close{
  position:absolute;
  top:18px;right:20px;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
  color:var(--ink-2);
  font-size:18px;
  cursor:pointer;
}

/* ---------- Breadcrumb ---------- */
.crumb-bar{padding:26px 0 0;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--ink-3);
}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--line);}
.crumb .current{color:var(--ink-2);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- Article hero ---------- */
.article-hero{
  position:relative;
  padding:44px 0 40px;
  overflow:hidden;
}
.article-hero::before{
  content:"hth";
  position:absolute;
  right:-10px;top:-30px;
  font-size:clamp(120px,20vw,240px);
  font-weight:800;
  letter-spacing:-.04em;
  color:var(--brand);
  opacity:.035;
  pointer-events:none;
  line-height:1;
}
.article-hero-inner{position:relative;max-width:840px;}
.badge-cat{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 14px;
  border-radius:999px;
  background:rgba(30,58,52,.08);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
}
.article-title{
  margin:18px 0 0;
  font-size:clamp(28px,3.6vw,42px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.02em;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:20px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--ink-3);
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--line);}
.hero-rule{margin-top:32px;height:1px;background:var(--line);}

/* ---------- Article layout ---------- */
.article-section{padding:48px 0 96px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:64px;
  align-items:start;
}
.cover-figure{
  margin:0 0 40px;
  border-radius:var(--radius-img);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  aspect-ratio:16/9;
  background:var(--bg-2);
}
.cover-figure img{width:100%;height:100%;object-fit:cover;}

.article-body{
  max-width:820px;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-2);
}
.article-body p{margin:0 0 1.4em;}
.article-body h2{
  margin:40px 0 16px;
  padding-left:14px;
  border-left:3px solid var(--brand);
  font-size:clamp(21px,2.4vw,27px);
  line-height:1.4;
  font-weight:700;
  color:var(--ink);
}
.article-body h3{
  margin:32px 0 12px;
  font-size:20px;
  font-weight:600;
  color:var(--ink);
}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:600;color:var(--ink);}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.3em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.5em;}
.article-body blockquote{
  margin:24px 0;
  padding:20px 24px;
  background:var(--bg-2);
  border-left:3px solid var(--brand);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:var(--ink);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-img);margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--ink-3);
}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent);}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:16px;
}
.article-body th,.article-body td{
  padding:12px 10px;
  border-bottom:1px solid var(--line);
  text-align:left;
}
.article-body th{color:var(--ink);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.article-body code{
  background:var(--bg-2);
  padding:2px 6px;
  border-radius:6px;
  font-size:15px;
  color:var(--brand-dark);
}

.empty-state{
  padding:64px 28px;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:var(--card);
  text-align:center;
}
.empty-state h2{font-size:22px;font-weight:700;}
.empty-state p{margin-top:12px;color:var(--ink-2);font-size:16px;}
.empty-state .btn{margin-top:24px;}

/* ---------- Tags ---------- */
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:48px;
  padding-top:28px;
  border-top:1px solid var(--line-soft);
}
.tag-pill{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:13px;
  color:var(--ink-2);
  background:var(--card);
  transition:all .2s var(--ease);
}
.tag-pill:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}

.back-link{margin-top:32px;}

/* ---------- Sidebar ---------- */
.side-stack{display:flex;flex-direction:column;gap:24px;position:sticky;top:96px;}
.side-card{
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-1);
}
.side-title{
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ink);
  padding-bottom:14px;
  border-bottom:1px solid var(--line-soft);
  margin-bottom:6px;
}
.side-list li{border-bottom:1px solid var(--line-soft);}
.side-list li:last-child{border-bottom:0;}
.side-list a{
  display:block;
  padding:13px 0;
  font-size:15px;
  color:var(--ink-2);
  transition:all .2s var(--ease);
}
.side-list a:hover{color:var(--brand);padding-left:4px;}
.side-note{font-size:14px;color:var(--ink-2);line-height:1.8;}
.side-cta{
  background:var(--dark);
  border:1px solid var(--dark);
  color:#fff;
}
.side-cta .side-title{color:#fff;border-bottom-color:rgba(255,255,255,.14);}
.side-cta p{color:rgba(255,255,255,.75);font-size:14px;line-height:1.8;margin-top:14px;}
.side-cta .btn{margin-top:20px;background:#fff;color:var(--brand-dark);}
.side-cta .btn:hover{background:var(--bg-2);color:var(--brand-dark);}

/* ---------- Related ---------- */
.related-section{
  padding:88px 0;
  background:var(--bg-2);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.25;
}
.section-head p{margin-top:10px;color:var(--ink-2);font-size:15px;max-width:620px;}
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:28px;
}
.news-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
  height:100%;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-2);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-cat{
  align-self:flex-start;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--accent);
  font-weight:600;
}
.news-title{
  font-size:18px;
  font-weight:600;
  line-height:1.5;
  color:var(--ink);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card:hover .news-title{color:var(--brand);}
.news-desc{
  font-size:14px;
  color:var(--ink-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-foot{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line-soft);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink-3);
}

/* ---------- Bottom CTA ---------- */
.cta-band{padding:88px 0;}
.cta-inner{
  background:var(--dark);
  border-radius:20px;
  padding:56px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.3;}
.cta-inner p{margin-top:14px;color:rgba(255,255,255,.72);font-size:15px;max-width:560px;line-height:1.85;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-actions .btn-primary{background:#fff;color:var(--brand-dark);}
.cta-actions .btn-primary:hover{background:var(--bg-2);color:var(--brand-dark);}
.cta-actions .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff;}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.7);padding:72px 0 0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand-mark{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);}
.footer-desc{margin-top:20px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:320px;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-link{
  display:block;
  padding:7px 0;
  font-size:14px;
  color:rgba(255,255,255,.68);
}
.footer-link:hover{color:#fff;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:24px 0 32px;
  font-size:13px;
  letter-spacing:.02em;
  color:rgba(255,255,255,.5);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:48px;}
}
@media (max-width:991px){
  .nav-main{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn-sm{display:none;}
  .article-layout{grid-template-columns:1fr;gap:44px;}
  .side-stack{position:static;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .article-section{padding-bottom:72px;}
  .related-section,.cta-band{padding:64px 0;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .article-hero{padding:32px 0 28px;}
  .crumb .current{max-width:200px;}
  .cta-inner{padding:40px 26px;border-radius:16px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:576px){
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .article-body{font-size:16px;}
  .btn{padding:12px 20px;}
}

/* roulang page: category2 */
:root{
  --ink:#14161A;
  --ink-2:#4A4F55;
  --ink-3:#8A8F96;
  --brand:#1E3A34;
  --brand-deep:#142824;
  --brand-soft:#2C524A;
  --brand-tint:#E7EDEA;
  --accent:#C0552F;
  --accent-soft:#F4E6DF;
  --bg:#F7F4EF;
  --bg-soft:#EFEAE1;
  --card:#FFFFFF;
  --line:#E3DED4;
  --line-soft:#EDE8DF;
  --dark:#16211E;
  --radius-sm:10px;
  --radius-md:14px;
  --radius-lg:20px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04), 0 12px 32px -18px rgba(20,22,26,.18);
  --shadow-2:0 18px 40px -20px rgba(20,22,26,.24);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-body-color:#14161A;
  --bs-body-bg:#F7F4EF;
  --bs-primary:#1E3A34;
  --bs-link-color:#1E3A34;
  --bs-link-hover-color:#C0552F;
  --bs-border-color:#E3DED4;
  --bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;color:var(--ink);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ============ 按钮 ============ */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:12px 26px;
  background:var(--brand);color:#fff;
  border:1px solid var(--brand);
  border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:background .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.btn-brand:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:12px 26px;
  background:transparent;color:var(--brand);
  border:1px solid var(--brand);
  border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.btn-outline-brand:hover{background:var(--brand-tint);border-color:var(--brand-soft);color:var(--brand-deep);transform:translateY(-2px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:9px 20px;
  border:1px solid var(--line);border-radius:var(--radius-pill);
  color:var(--brand);font-size:14px;font-weight:600;letter-spacing:.02em;
  background:rgba(255,255,255,.6);
  transition:border-color .25s var(--ease),background .25s var(--ease),color .25s var(--ease);
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:#fff;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand);
  position:relative;
}
.link-arrow::after{
  content:"→";display:inline-block;
  transition:transform .28s var(--ease);
}
.link-arrow:hover::after{transform:translateX(4px);}
.link-arrow span{position:relative;}
.link-arrow span::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:100%;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);
}
.link-arrow:hover span::after{transform:scaleX(1);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,244,239,.88);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
  transition:padding .3s var(--ease),background .3s var(--ease);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;
  transition:height .3s var(--ease);
}
.site-header.is-scrolled .nav-wrap{height:60px;}
.brand{display:flex;align-items:baseline;gap:8px;flex:0 0 auto;}
.brand-mark{
  font-size:23px;font-weight:700;letter-spacing:-0.02em;color:var(--brand);
  line-height:1;
}
.brand-sub{
  font-size:11.5px;color:var(--ink-3);letter-spacing:.08em;line-height:1;
}
.nav-main{display:flex;align-items:center;gap:36px;}
.nav-link{
  position:relative;
  font-size:15px;letter-spacing:.02em;color:var(--ink-2);
  padding:6px 0;
  transition:color .25s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;
  width:0;height:2px;background:var(--accent);
  transform:translateX(-50%);
  transition:width .28s var(--ease);
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{width:18px;}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{width:22px;height:2px;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);border-radius:12px;
  background:rgba(255,255,255,.7);
  padding:0;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--brand);border-radius:2px;transition:transform .3s var(--ease),opacity .3s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line-soft);
  background:var(--bg);
  padding:8px 0 24px;
}
.mobile-drawer.is-open{display:block;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;padding:0 4px;
  font-size:19px;color:var(--ink);letter-spacing:.02em;
  border-bottom:1px solid var(--line-soft);
}
.drawer-link.is-active{color:var(--brand);font-weight:600;}
.drawer-link.is-active::before{
  content:"";display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--accent);margin-right:10px;
}
.drawer-cta{margin-top:22px;width:100%;}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  padding:72px 0 64px;
  background:var(--bg-soft);
  overflow:hidden;
  text-align:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.16;
}
.page-hero .container{position:relative;z-index:1;}
.breadcrumb-list{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px;
  font-size:13px;letter-spacing:.02em;color:var(--ink-3);
  margin-bottom:22px;
}
.breadcrumb-list a{color:var(--ink-3);}
.breadcrumb-list a:hover{color:var(--accent);}
.breadcrumb-list .sep{color:var(--line);}
.page-hero h1{
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.2;
  letter-spacing:-0.02em;
  max-width:900px;margin:0 auto 18px;
}
.page-hero .hero-sub{
  max-width:760px;margin:0 auto;
  font-size:17px;color:var(--ink-2);
}
.hero-divider{
  width:72px;height:1px;background:var(--line);
  margin:32px auto 0;
}
.hero-tags{
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px;
  margin-top:28px;
}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 15px;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-pill);
  font-size:13px;color:var(--ink-2);letter-spacing:.02em;
}
.tag-pill::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-soft{background:var(--bg-soft);}
.section-dark{background:var(--dark);color:#fff;}
.section-head{max-width:720px;margin-bottom:52px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;color:var(--accent);
  font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--accent);}
.section-head h2{
  font-size:clamp(24px,3vw,36px);
  line-height:1.28;margin-bottom:16px;
}
.section-head p{font-size:16.5px;color:var(--ink-2);}
.section-dark .section-head h2{color:#fff;}
.section-dark .section-head p{color:rgba(255,255,255,.74);}

/* ============ 交错图文 ============ */
.zig-list{border-top:1px solid var(--line-soft);}
.zig-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:52px 0;
  border-bottom:1px solid var(--line-soft);
}
.zig-media{order:1;}
.zig-body{order:2;}
.zig-row.reverse .zig-media{order:2;}
.zig-row.reverse .zig-body{order:1;}
.media-frame{
  position:relative;
  aspect-ratio:4/3;
  border-radius:var(--radius-md);
  overflow:hidden;
  background:var(--bg-soft);
  box-shadow:var(--shadow-1);
}
.media-frame img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s var(--ease);
}
.zig-row:hover .media-frame img{transform:scale(1.03);}
.media-index{
  position:absolute;left:16px;bottom:14px;
  display:inline-flex;align-items:center;justify-content:center;
  min-width:40px;height:34px;padding:0 12px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  font-size:13px;font-weight:600;color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
}
.zig-body h3{
  font-size:clamp(20px,2.2vw,24px);
  line-height:1.4;margin-bottom:14px;
  position:relative;display:inline-block;
}
.zig-body h3::after{
  content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;
  background:var(--accent);transition:width .35s var(--ease);
}
.zig-row:hover .zig-body h3::after{width:100%;}
.zig-body p{color:var(--ink-2);font-size:16px;margin-bottom:14px;}
.zig-body p:last-of-type{margin-bottom:20px;}
.mini-list{margin-bottom:22px;}
.mini-list li{
  position:relative;
  padding-left:20px;
  font-size:15px;color:var(--ink-2);
  line-height:1.9;
}
.mini-list li::before{
  content:"";position:absolute;left:2px;top:13px;
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
}

/* ============ 编号要点清单 ============ */
.points-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px 28px;
}
.point-item{
  display:flex;gap:18px;align-items:flex-start;
  padding:24px;
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-md);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.point-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line);}
.point-num{
  flex:0 0 auto;
  width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--brand-tint);
  color:var(--brand);
  font-size:13.5px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.point-item:nth-child(even) .point-num{background:var(--accent-soft);color:var(--accent);}
.point-item h3{font-size:17px;margin-bottom:6px;line-height:1.5;}
.point-item p{font-size:15px;color:var(--ink-2);}

/* ============ 对比信息条 ============ */
.compare-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:28px;
}
.compare-card{
  padding:32px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--card);
}
.compare-card.is-brand{
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
}
.compare-card.is-brand h3{color:#fff;}
.compare-card.is-brand li{color:rgba(255,255,255,.82);}
.compare-card h3{font-size:19px;margin-bottom:20px;}
.compare-card li{
  position:relative;padding-left:24px;
  font-size:15.5px;color:var(--ink-2);
  padding-top:11px;padding-bottom:11px;
  border-bottom:1px solid var(--line-soft);
}
.compare-card li:last-child{border-bottom:0;}
.compare-card li::before{
  content:"✓";position:absolute;left:0;top:11px;
  font-size:13px;color:var(--accent);font-weight:700;
}
.compare-card.is-brand li::before{color:#F0A487;}
.compare-card.is-muted li::before{content:"—";color:var(--ink-3);}
.compare-foot{
  margin-top:22px;font-size:14px;color:var(--ink-3);letter-spacing:.02em;
}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);max-width:920px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item[open] summary{color:var(--brand);}
.faq-icon{
  position:relative;flex:0 0 auto;
  width:20px;height:20px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink-2);
  transition:transform .3s var(--ease),background .3s var(--ease);
}
.faq-icon::before{left:0;top:9px;width:20px;height:1.5px;}
.faq-icon::after{left:9px;top:0;width:1.5px;height:20px;}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-item[open] .faq-icon::before{background:var(--accent);}
.faq-answer{
  padding:0 4px 26px;
  max-width:800px;
  font-size:16px;color:var(--ink-2);line-height:1.9;
}

/* ============ CTA ============ */
.cta-band{padding:0 0 96px;}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:48px 52px;
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  flex-wrap:wrap;
}
.cta-inner h2{
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.35;margin-bottom:12px;
}
.cta-inner p{font-size:16px;color:var(--ink-2);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.72);
  padding:76px 0 32px;
  font-size:15px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand-mark{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.5);}
.footer-desc{
  margin-top:18px;font-size:14.5px;line-height:1.9;
  color:rgba(255,255,255,.62);max-width:340px;
}
.footer-title{
  font-size:14px;letter-spacing:.06em;color:#fff;margin-bottom:18px;font-weight:600;
}
.footer-link{
  display:block;
  color:rgba(255,255,255,.66);
  font-size:14.5px;
  padding:7px 0;
  transition:color .25s var(--ease);
}
.footer-link:hover{color:#fff;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:26px;
  font-size:13.5px;color:rgba(255,255,255,.5);
  letter-spacing:.02em;
}

/* ============ 动效 ============ */
.fade-up{opacity:0;transform:translateY(14px);}
.fade-up.is-in{
  opacity:1;transform:translateY(0);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .container{padding-left:24px;padding-right:24px;}
  .zig-row{gap:40px;}
}
@media (max-width:991px){
  .nav-main,.nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:76px 0;}
  .zig-row{grid-template-columns:1fr;gap:28px;padding:40px 0;}
  .zig-row .zig-media,.zig-row.reverse .zig-media{order:1;}
  .zig-row .zig-body,.zig-row.reverse .zig-body{order:2;}
  .points-grid{grid-template-columns:1fr;}
  .compare-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding-bottom:76px;}
  .cta-inner{padding:36px 28px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .page-hero{padding:52px 0 48px;}
  .section{padding:60px 0;}
  .section-head{margin-bottom:36px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-desc{max-width:none;}
  .cta-actions{width:100%;}
  .cta-actions .btn-brand,.cta-actions .btn-outline-brand{width:100%;}
}
@media (max-width:575px){
  .container{padding-left:20px;padding-right:20px;}
  .brand-mark{font-size:20px;}
  .brand-sub{font-size:10.5px;}
  .page-hero h1{font-size:28px;}
  .page-hero .hero-sub{font-size:15.5px;}
  .point-item{padding:20px;}
  .compare-card{padding:24px;}
  .faq-item summary{font-size:16px;padding:20px 2px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .fade-up{opacity:1;transform:none;}
}