/* roulang page: index */
:root{
  --brand:#0F4C44;
  --brand-2:#14655A;
  --brand-deep:#0B3A34;
  --dark:#0B1F1C;
  --accent:#D9603B;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4DFD6;
  --text:#16201E;
  --muted:#5A6561;
  --inverse:#F2F0EA;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(16,32,30,.06);
  --shadow-md:0 1px 2px rgba(16,32,30,.06), 0 12px 28px -18px rgba(16,32,30,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",Consolas,monospace;

  --bs-primary:#0F4C44;
  --bs-primary-rgb:15,76,68;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#16201E;
  --bs-border-color:#E4DFD6;
  --bs-border-radius:14px;
  --bs-border-radius-sm:10px;
  --bs-link-color:#0F4C44;
  --bs-link-hover-color:#0B3A34;
  --bs-font-sans-serif:var(--font-sans);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color 220ms var(--ease);}
a:hover{color:var(--brand-deep);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.02em;color:var(--text);}
h1{line-height:1.15;}
h2{font-size:clamp(26px,3.2vw,38px);line-height:1.22;}
h3{font-size:20px;line-height:1.4;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 4px rgba(217,96,59,.18);}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media (min-width:992px){.container{padding:0 32px;}}
@media (min-width:1200px){.container{max-width:1200px;}}
@media (min-width:1400px){.container{max-width:1280px;}}

.section{padding:88px 0;}
@media (min-width:992px){.section{padding:112px 0;}}
.section--tight{padding-top:64px;}
.section--dark{background:var(--dark);color:var(--inverse);}
.section--dark h2,.section--dark h3{color:var(--inverse);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-2);font-family:var(--font-mono);font-weight:500;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);display:block;}
.section--dark .eyebrow{color:#8FBCB4;}
.lead{color:var(--muted);font-size:16.5px;max-width:60ch;}
.section--dark .lead{color:#A9BAB6;}
.section-head{display:flex;flex-wrap:wrap;gap:20px 40px;align-items:flex-end;justify-content:space-between;margin-bottom:48px;}
.section-head .lead{margin-top:14px;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* 顶部信息条 */
.topbar{background:var(--dark);color:var(--inverse);font-size:13px;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-domain{font-family:var(--font-mono);letter-spacing:.04em;color:#9BB3AE;}
.topbar-hint{color:#7E948F;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:16px;}
.topbar-link{color:#C9D6D3;font-size:13px;}
.topbar-link:hover{color:#fff;}
.topbar-btn{
  display:inline-block;padding:4px 12px;border:1px solid rgba(242,240,234,.35);
  border-radius:999px;color:var(--inverse);font-size:12.5px;line-height:1.5;
}
.topbar-btn:hover{border-color:var(--accent);color:#fff;}
@media (max-width:767px){.topbar-hint{display:none;}}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:1030;background:rgba(246,244,239,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-sm);}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;transition:height 220ms var(--ease);
}
.site-header.is-scrolled .nav-inner{height:60px;}
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:linear-gradient(150deg,var(--brand) 0%,var(--brand-2) 100%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-family:var(--font-mono);font-size:14px;font-weight:600;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0;}
.brand-name{font-size:17px;font-weight:700;color:var(--text);letter-spacing:-0.01em;white-space:nowrap;}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.08em;}
.nav-menu{display:none;}
@media (min-width:992px){
  .nav-menu{display:flex;align-items:center;gap:4px;flex:1;justify-content:center;}
  .nav-menu a{
    position:relative;display:inline-block;padding:8px 14px;font-size:15px;color:var(--text);
    border-radius:8px;transition:color 220ms var(--ease),background 220ms var(--ease);
  }
  .nav-menu a::after{
    content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
    background:var(--brand);transform:scaleX(0);transform-origin:left;
    transition:transform 220ms var(--ease);
  }
  .nav-menu a:hover{color:var(--brand);background:rgba(15,76,68,.05);}
  .nav-menu a:hover::after{transform:scaleX(1);}
  .nav-menu a[aria-current="page"]{color:var(--brand);font-weight:600;}
  .nav-menu a[aria-current="page"]::after{transform:scaleX(1);}
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;
  display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--text);border-radius:2px;}
@media (min-width:992px){.nav-toggle{display:none;}}

/* 按钮 */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background 220ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease),transform 220ms var(--ease);
}
.btn-main{background:var(--brand);color:#fff;border:1px solid var(--brand);}
.btn-main:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;}
.btn-main .arw{transition:transform 220ms var(--ease);}
.btn-main:hover .arw{transform:translateX(4px);}
.btn-ghost{background:transparent;color:var(--brand);border:1px solid var(--brand);}
.btn-ghost:hover{background:rgba(15,76,68,.06);color:var(--brand-deep);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14.5px;
  border-bottom:1px solid transparent;transition:border-color 220ms var(--ease),gap 220ms var(--ease);
}
.text-link:hover{border-bottom-color:var(--brand);gap:10px;}

/* Hero */
.hero{padding:56px 0 72px;}
@media (min-width:992px){.hero{padding:72px 0 96px;}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:48px;align-items:center;}
@media (min-width:992px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:64px;}}
.hero h1{font-size:clamp(34px,5.4vw,60px);margin:18px 0 20px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{font-size:17px;color:var(--muted);max-width:52ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-notes{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:30px;font-size:14px;color:var(--muted);}
.hero-notes li{display:flex;align-items:center;gap:8px;}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none;}
.hero-visual{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-md);}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,76,68,.12) 0%,rgba(11,31,28,.42) 100%);
}
.hero-badge{
  position:absolute;left:20px;bottom:20px;z-index:2;background:rgba(11,31,28,.72);
  color:var(--inverse);font-size:13.5px;padding:8px 14px;border-radius:999px;backdrop-filter:blur(4px);
}
.stat-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px;
  border-top:1px solid var(--line);padding-top:24px;
}
.stat-num{font-family:var(--font-mono);font-size:clamp(22px,2.6vw,30px);font-weight:600;color:var(--brand);letter-spacing:-0.01em;}
.stat-label{font-size:13px;color:var(--muted);margin-top:4px;}

/* 三步 */
.steps{display:grid;gap:36px;}
@media (min-width:768px){.steps{grid-template-columns:repeat(3,1fr);gap:28px;}}
.step{position:relative;padding-top:20px;border-top:1px solid var(--line);}
.step-num{
  font-family:var(--font-mono);font-size:64px;line-height:1;font-weight:600;
  color:rgba(15,76,68,.14);letter-spacing:-0.03em;display:block;margin-bottom:8px;
}
@media (min-width:992px){.step-num{font-size:82px;}}
.step h3{margin-bottom:10px;}
.step p{color:var(--muted);font-size:15.5px;}
.step-list{margin-top:14px;font-size:14px;color:var(--muted);}
.step-list li{padding-left:16px;position:relative;line-height:1.9;}
.step-list li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:1px;background:var(--accent);}

/* 模块卡片（非对称） */
.module-grid{display:grid;gap:24px;grid-template-columns:1fr;}
@media (min-width:992px){.module-grid{grid-template-columns:1.35fr 1fr;}}
.module-col{display:grid;gap:24px;}
.card-surface{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.card-surface:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.card-pad{padding:28px;}
.card-media{overflow:hidden;}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 400ms var(--ease);}
.card-surface:hover .card-media img{transform:scale(1.03);}
.card-surface h3{margin:16px 0 10px;}
.card-surface p{color:var(--muted);font-size:15.5px;}
.badge-tag{
  display:inline-block;padding:4px 12px;border-radius:999px;font-size:12.5px;
  background:rgba(15,76,68,.08);color:var(--brand);font-weight:600;letter-spacing:.02em;
}
.badge-tag.is-accent{background:rgba(217,96,59,.1);color:#B54A2A;}
.kv-list{margin-top:18px;border-top:1px solid var(--line);}
.kv-list li{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px;}
.kv-list span:first-child{color:var(--muted);}
.kv-list span:last-child{font-family:var(--font-mono);color:var(--brand);font-weight:600;}

/* 案例 */
.case{display:grid;gap:32px;align-items:center;padding:44px 0;border-top:1px solid var(--line);}
@media (min-width:992px){.case{grid-template-columns:1fr 1fr;gap:56px;}}
.case-img{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-md);}
.case-img img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.case blockquote{
  margin:22px 0 0;padding:16px 0 16px 20px;border-left:3px solid var(--brand);
  color:var(--text);font-size:16px;background:transparent;
}
.case blockquote cite{display:block;margin-top:10px;font-style:normal;font-size:13.5px;color:var(--muted);}
.case-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.case-tags li{
  font-family:var(--font-mono);font-size:12.5px;color:var(--brand-2);
  border:1px solid var(--line);border-radius:999px;padding:5px 12px;background:#fff;
}

/* FAQ */
.faq-grid{display:grid;gap:40px;}
@media (min-width:992px){.faq-grid{grid-template-columns:.8fr 1.2fr;gap:64px;align-items:start;}}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:14px;overflow:hidden;transition:transform 220ms var(--ease),border-color 220ms var(--ease);
}
.faq-item:hover{border-color:#CFC8BB;transform:translateY(-2px);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:0;text-align:left;padding:20px 22px;
  font-size:16.5px;font-weight:600;color:var(--text);cursor:pointer;position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--accent);transform:scaleY(0);transform-origin:top;
  transition:transform 240ms var(--ease);
}
.faq-item.is-open .faq-q::before{transform:scaleY(1);}
.faq-icon{
  flex:none;width:24px;height:24px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--brand);
  transition:transform 240ms var(--ease),background 240ms var(--ease),color 240ms var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand);color:#fff;border-color:var(--brand);}
.faq-a{padding:0 22px 20px 22px;color:var(--muted);font-size:15.5px;display:none;}
.faq-item.is-open .faq-a{display:block;}

/* 最新信息 */
.news-grid{display:grid;gap:24px;grid-template-columns:1fr;}
@media (min-width:992px){.news-grid{grid-template-columns:1.15fr 1fr;}}
.news-lead .news-body{padding:26px;}
.news-lead img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-list{display:grid;gap:16px;}
.news-item{
  display:grid;grid-template-columns:104px 1fr;gap:16px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:14px;transition:transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.news-item img{width:104px;height:72px;object-fit:cover;border-radius:var(--radius-img);}
.news-item h3{font-size:16.5px;margin:6px 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{font-size:13px;color:var(--muted);font-family:var(--font-mono);}
.news-title{font-size:22px;margin:12px 0 10px;}
.news-excerpt{color:var(--muted);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.empty-state{
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:38px 24px;color:var(--muted);font-size:15px;text-align:center;
}

/* CTA 深色区 */
.cta-grid{display:grid;gap:44px;}
@media (min-width:992px){.cta-grid{grid-template-columns:1.1fr .9fr;gap:72px;}}
.form-field{margin-bottom:18px;}
.form-field label{display:block;font-size:14px;margin-bottom:8px;color:#C9D6D3;}
.form-control{
  width:100%;height:52px;padding:0 16px;border-radius:var(--radius-btn);
  border:1px solid rgba(228,223,214,.28);background:rgba(255,255,255,.06);
  color:var(--inverse);font-size:15px;transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease);
}
.form-control::placeholder{color:#7E948F;}
.form-control:focus{
  outline:none;border-color:var(--brand-2);background:rgba(255,255,255,.1);
  box-shadow:0 0 0 4px rgba(20,101,90,.28);
}
.form-hint{font-size:13px;color:#7E948F;margin-top:8px;}
.contact-list{margin-top:18px;}
.contact-list li{padding:14px 0;border-bottom:1px solid rgba(228,223,214,.16);font-size:15px;color:#C9D6D3;}
.contact-list strong{display:block;font-size:13px;color:#7E948F;font-weight:500;margin-bottom:4px;letter-spacing:.06em;}

/* 页脚 */
.site-footer{background:var(--dark);color:#C9D6D3;padding:72px 0 0;font-size:14.5px;}
.footer-grid{display:grid;gap:40px;grid-template-columns:1fr;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr;}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;}}
.site-footer h4{font-size:14px;color:var(--inverse);letter-spacing:.08em;margin-bottom:18px;font-weight:600;}
.site-footer .brand-name{color:var(--inverse);}
.site-footer .brand-sub{color:#7E948F;}
.footer-about{color:#93A6A2;font-size:14px;margin-top:16px;max-width:34ch;}
.footer-links li{margin-bottom:11px;}
.footer-links a{
  color:#C9D6D3;border-bottom:1px solid transparent;padding-bottom:2px;
  transition:color 220ms var(--ease),border-color 220ms var(--ease);
}
.footer-links a:hover{color:#fff;border-bottom-color:var(--accent);}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(228,223,214,.16);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  font-size:13px;color:#7E948F;
}
.to-top{color:#C9D6D3;}
.to-top:hover{color:#fff;}

/* 动效 */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* offcanvas */
.offcanvas{width:320px;background:var(--bg);}
.offcanvas-header{border-bottom:1px solid var(--line);padding:20px 22px;}
.offcanvas-body{padding:22px;}
.oc-nav li{margin-bottom:6px;}
.oc-nav a{
  display:block;padding:12px 14px;border-radius:10px;font-size:15.5px;color:var(--text);
  border:1px solid transparent;
}
.oc-nav a:hover{background:rgba(15,76,68,.06);color:var(--brand);}
.oc-nav a[aria-current="page"]{color:var(--brand);font-weight:600;border-color:var(--line);background:#fff;}

/* roulang page: article */
:root{
  --bs-primary:#0F4C44;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#16201E;
  --bs-border-color:#E4DFD6;
  --bs-border-radius:14px;
  --c-primary:#0F4C44;
  --c-primary-light:#14655A;
  --c-primary-dark:#0B3A34;
  --c-dark:#0B1F1C;
  --c-accent:#D9603B;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD6;
  --c-text:#16201E;
  --c-text-2:#5A6561;
  --c-invert:#F2F0EA;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(16,32,30,.06);
  --shadow-md:0 1px 2px rgba(16,32,30,.06),0 12px 28px -18px rgba(16,32,30,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color 220ms var(--ease),border-color 220ms var(--ease);}
button{font:inherit;}
ul,ol{padding-left:1.2em;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;box-shadow:0 0 0 4px rgba(217,96,59,.18);border-radius:6px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:var(--c-invert);padding:10px 16px;border-radius:0 0 var(--radius-btn) 0;z-index:99;}
.skip-link:focus{left:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (min-width:1400px){.container{max-width:1280px;}}
@media (max-width:1199px){.container{max-width:960px;}}
@media (max-width:767px){.container{padding:0 20px;}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--c-dark);color:var(--c-invert);font-size:13px;line-height:36px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-domain{font-family:var(--mono);letter-spacing:.02em;color:#CFD8D4;}
.topbar-tip{color:#8FA39D;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:16px;}
.topbar-link{color:#CFD8D4;border-bottom:1px solid transparent;}
.topbar-link:hover{color:#FFFFFF;border-bottom-color:#7E938C;}
.topbar-btn{
  display:inline-flex;align-items:center;
  height:24px;padding:0 12px;border:1px solid #47605A;border-radius:999px;
  color:#EDEFEA;font-size:12.5px;transition:border-color 220ms var(--ease),background 220ms var(--ease);
}
.topbar-btn:hover{border-color:#9FB4AE;background:rgba(255,255,255,.06);}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:var(--c-bg);}
.navbar-main{background:var(--c-bg);border-bottom:1px solid transparent;transition:box-shadow 220ms var(--ease),border-color 220ms var(--ease),background 220ms var(--ease);}
.navbar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height 220ms var(--ease);}
.site-header.is-scrolled .navbar-main{border-bottom:1px solid var(--c-line);box-shadow:0 8px 20px -18px rgba(16,32,30,.45);}
.site-header.is-scrolled .navbar-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:12px;min-width:0;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(160deg,var(--c-primary) 0%,var(--c-primary-light) 100%);
  color:#EFEDE6;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:13.5px;letter-spacing:.06em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--c-text);}
.brand-sub{font-size:12px;color:var(--c-text-2);}
.nav-menu{display:flex;align-items:center;gap:28px;}
.nav-menu a{
  position:relative;font-size:15px;color:var(--c-text-2);padding:6px 0;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform 240ms var(--ease);
}
.nav-menu a:hover{color:var(--c-primary);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a[aria-current="page"]{color:var(--c-primary);font-weight:600;}
.nav-menu a[aria-current="page"]::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:14px;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background 220ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease),transform 220ms var(--ease),box-shadow 220ms var(--ease);}
.btn-primary-solid{height:48px;padding:0 24px;background:var(--c-primary);color:var(--c-invert);box-shadow:var(--shadow-sm);}
.btn-primary-solid:hover{background:var(--c-primary-dark);color:#FFFFFF;}
.btn-primary-solid .arrow{display:inline-block;transition:transform 220ms var(--ease);}
.btn-primary-solid:hover .arrow{transform:translateX(4px);}
.btn-ghost{height:48px;padding:0 24px;border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-ghost:hover{background:rgba(15,76,68,.07);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;border-bottom:1px solid transparent;padding-bottom:2px;}
.btn-text:hover{border-bottom-color:var(--c-primary);}
.btn-text .arrow{transition:transform 220ms var(--ease);}
.btn-text:hover .arrow{transform:translateX(4px);}

/* ---------- 移动端抽屉 ---------- */
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--c-line);background:var(--c-surface);border-radius:var(--radius-btn);align-items:center;justify-content:center;flex-direction:column;gap:5px;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;}
.site-drawer{width:320px !important;background:var(--c-bg);color:var(--c-text);border-left:1px solid var(--c-line);}
.site-drawer .offcanvas-header{border-bottom:1px solid var(--c-line);padding:18px 22px;}
.site-drawer .offcanvas-body{padding:22px;}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:24px;}
.drawer-links a{padding:12px 4px;border-bottom:1px solid var(--c-line);font-size:15.5px;color:var(--c-text);}
.drawer-links a:hover,.drawer-links a[aria-current="page"]{color:var(--c-primary);}
@media (max-width:991px){
  .nav-menu{display:none;}
  .nav-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
}
@media (max-width:575px){
  .topbar-tip{display:none;}
  .topbar-link{display:none;}
  .brand-sub{display:none;}
}

/* ---------- 文章头部 ---------- */
.post-head{padding:40px 0 34px;border-bottom:1px solid var(--c-line);background:var(--c-bg);}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-text-2);margin-bottom:22px;}
.breadcrumb-nav a{color:var(--c-text-2);}
.breadcrumb-nav a:hover{color:var(--c-primary);}
.breadcrumb-nav .sep::before{content:"/";color:#C7C0B4;}
.breadcrumb-nav .crumb-current{color:var(--c-primary);font-weight:600;}
.post-label{font-size:13px;letter-spacing:.14em;color:var(--c-text-2);text-transform:uppercase;font-family:var(--mono);margin:0 0 14px;}
.post-title{
  font-size:clamp(30px,4.2vw,48px);line-height:1.2;letter-spacing:-.02em;
  margin:0 0 22px;max-width:900px;color:var(--c-text);
}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:14px;color:var(--c-text-2);}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:#C7C0B4;display:inline-block;}
.post-meta strong{color:var(--c-primary);font-weight:600;}

/* ---------- 文章主体 ---------- */
.post-body{padding:64px 0 24px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start;}
.article-side{position:sticky;top:96px;display:block;}
@media (max-width:991px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .article-side{display:none;}
}
.entry-content{max-width:752px;font-size:17px;line-height:1.9;color:var(--c-text);}
.entry-content > * + *{margin-top:1.4em;}
.entry-content p{margin:0 0 1.4em;}
.entry-content h2{font-size:clamp(24px,2.6vw,30px);line-height:1.3;letter-spacing:-.015em;color:var(--c-primary);margin:2.2em 0 .7em;}
.entry-content h3{font-size:20px;line-height:1.4;color:var(--c-text);margin:1.9em 0 .6em;}
.entry-content ul,.entry-content ol{margin:0 0 1.4em;padding-left:1.35em;}
.entry-content li{margin-bottom:.5em;}
.entry-content li::marker{color:var(--c-primary);}
.entry-content blockquote{
  margin:1.8em 0;padding:4px 0 4px 22px;border-left:3px solid var(--c-primary);
  color:var(--c-text-2);background:transparent;font-style:normal;
}
.entry-content img{border-radius:var(--radius-img);margin:1.8em 0 .8em;box-shadow:var(--shadow-sm);}
.entry-content figcaption{font-size:13.5px;color:var(--c-text-2);text-align:left;margin-bottom:1.6em;}
.entry-content table{width:100%;border-collapse:collapse;font-size:15px;margin:1.8em 0;background:var(--c-surface);border-radius:var(--radius-img);overflow:hidden;}
.entry-content th,.entry-content td{border:1px solid var(--c-line);padding:12px 14px;text-align:left;}
.entry-content th{background:#EFEDE6;color:var(--c-primary);font-weight:600;}
.entry-content code{font-family:var(--mono);font-size:14px;background:#EFEDE6;padding:2px 6px;border-radius:6px;}
.entry-content pre{background:var(--c-dark);color:#E7E4DC;padding:18px 20px;border-radius:var(--radius-img);overflow:auto;font-size:14px;}
.entry-content pre code{background:none;color:inherit;padding:0;}
.entry-content a{color:var(--c-primary);border-bottom:1px solid rgba(15,76,68,.3);}
.entry-content a:hover{border-bottom-color:var(--c-primary);}
.entry-empty{max-width:752px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);padding:48px 40px;box-shadow:var(--shadow-sm);}
.entry-empty h2{font-size:24px;color:var(--c-primary);margin:0 0 12px;}
.entry-empty p{color:var(--c-text-2);margin:0 0 22px;}

/* ---------- 侧栏 ---------- */
.side-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-sm);}
.side-card + .side-card{margin-top:20px;}
.side-card h2,.side-card h3{font-size:15px;letter-spacing:.06em;color:var(--c-text-2);margin:0 0 14px;font-weight:600;}
.side-list{list-style:none;padding:0;margin:0;}
.side-list li + li{border-top:1px solid var(--c-line);}
.side-list a,.side-list span{display:block;padding:11px 0;font-size:14.5px;color:var(--c-text);}
.side-list a:hover{color:var(--c-primary);}
.side-note{font-size:13.5px;color:var(--c-text-2);line-height:1.75;margin:0;}
.side-cta{margin-top:14px;width:100%;}

/* ---------- 返回入口 ---------- */
.back-line{margin-top:48px;padding-top:24px;border-top:1px solid var(--c-line);}
.back-line a{display:inline-flex;align-items:center;gap:8px;color:var(--c-primary);font-weight:600;font-size:15px;}
.back-line a .arrow{transition:transform 220ms var(--ease);}
.back-line a:hover .arrow{transform:translateX(-4px);}

/* ---------- 相关推荐 ---------- */
.related{padding:88px 0 96px;background:var(--c-bg);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:36px;}
.section-head h2{font-size:clamp(26px,3.2vw,38px);line-height:1.18;letter-spacing:-.02em;margin:0;color:var(--c-text);}
.section-head p{margin:8px 0 0;color:var(--c-text-2);font-size:15px;max-width:560px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
@media (max-width:991px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:575px){.card-grid{grid-template-columns:minmax(0,1fr);}}
.post-card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D6CFC3;}
.card-cover{aspect-ratio:16/10;overflow:hidden;background:#E9E5DC;}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.post-card:hover .card-cover img{transform:scale(1.03);}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;background:rgba(15,76,68,.08);color:var(--c-primary);font-size:12.5px;font-weight:600;width:fit-content;}
.card-title{font-size:18px;line-height:1.5;margin:0;color:var(--c-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card:hover .card-title{color:var(--c-primary);}
.card-excerpt{font-size:14.5px;color:var(--c-text-2);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-text-2);font-family:var(--mono);}

/* ---------- 分类互链 ---------- */
.topic-links{margin-top:56px;padding-top:32px;border-top:1px solid var(--c-line);display:flex;flex-wrap:wrap;gap:12px;}
.topic-links a{
  display:inline-flex;align-items:center;height:42px;padding:0 20px;border:1px solid var(--c-line);
  border-radius:999px;background:var(--c-surface);font-size:14.5px;color:var(--c-text);
  transition:border-color 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease);
}
.topic-links a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);}

/* ---------- CTA 深色条 ---------- */
.cta-band{background:var(--c-dark);color:var(--c-invert);padding:80px 0;}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:48px;align-items:center;}
@media (max-width:991px){.cta-inner{grid-template-columns:minmax(0,1fr);gap:28px;}}
.cta-band h2{font-size:clamp(24px,3vw,34px);line-height:1.25;letter-spacing:-.02em;margin:0 0 14px;color:#FFFFFF;}
.cta-band p{margin:0;color:#9FB0AA;font-size:15.5px;line-height:1.85;max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-ghost{border-color:#5C736D;color:#EDEFEA;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.07);}
.cta-band .btn-primary-solid{background:var(--c-accent);color:#FFFFFF;}
.cta-band .btn-primary-solid:hover{background:#C2522F;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:#B9C4C0;padding:72px 0 24px;font-size:14.5px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr;}}
.site-footer .brand-name{color:#FFFFFF;}
.site-footer .brand-sub{color:#8FA39D;}
.site-footer .brand-mark{background:linear-gradient(160deg,#1B6B60 0%,#0F4C44 100%);}
.footer-about{margin:18px 0 0;color:#8FA39D;font-size:13.5px;line-height:1.8;max-width:280px;}
.site-footer h4{font-size:14px;color:#FFFFFF;margin:0 0 16px;letter-spacing:.04em;font-weight:600;}
.footer-links{list-style:none;padding:0;margin:0;}
.footer-links li{margin-bottom:11px;color:#93A29C;}
.footer-links a{color:#B9C4C0;border-bottom:1px solid transparent;padding-bottom:2px;}
.footer-links a:hover{color:#FFFFFF;border-bottom-color:#5C736D;}
.footer-bottom{
  margin-top:56px;padding-top:20px;border-top:1px solid rgba(255,255,255,.09);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:#8FA39D;
}
.to-top{color:#B9C4C0;border-bottom:1px solid transparent;}
.to-top:hover{color:#FFFFFF;border-bottom-color:#5C736D;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bs-primary:#0F4C44;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#16201E;
  --bs-border-color:#E4DFD6;
  --bs-border-radius:14px;
  --bs-link-color:#0F4C44;
  --bs-link-hover-color:#0B3A34;

  --ink:#16201E;
  --ink-2:#5A6561;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --line:#E4DFD6;
  --brand:#0F4C44;
  --brand-2:#14655A;
  --brand-deep:#0B3A34;
  --dark:#0B1F1C;
  --accent:#D9603B;
  --on-dark:#F2F0EA;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-soft:0 1px 2px rgba(16,32,30,.06), 0 12px 28px -18px rgba(16,32,30,.28);
  --shadow-lift:0 2px 4px rgba(16,32,30,.07), 0 20px 40px -22px rgba(16,32,30,.34);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:220ms var(--ease);
  --mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  letter-spacing:.005em;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--brand);text-decoration:none;transition:color var(--t),border-color var(--t)}
a:hover{color:var(--brand-deep)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:-.02em;line-height:1.2}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 4px rgba(217,96,59,.18);border-radius:6px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:991px){.container{max-width:960px}}
@media (max-width:575px){.container{padding-left:20px;padding-right:20px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--dark);color:var(--on-dark);font-size:13px;line-height:36px;height:36px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.topbar-site{font-family:var(--mono);letter-spacing:.04em;color:#CFD8D3}
.topbar-tip{color:#9FB0A9;position:relative;padding-left:14px}
.topbar-tip::before{content:"";position:absolute;left:0;top:50%;width:1px;height:12px;background:#3A4A45;transform:translateY(-50%)}
.topbar-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.topbar-link{color:#CFD8D3;border-bottom:1px solid transparent}
.topbar-link:hover{color:#fff;border-bottom-color:#fff}
.topbar-btn{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  border:1px solid rgba(242,240,234,.42);color:var(--on-dark);font-size:12px;line-height:1;
  transition:background var(--t),border-color var(--t),color var(--t);
}
.topbar-btn:hover{background:rgba(242,240,234,.12);border-color:rgba(242,240,234,.8);color:#fff}
@media (max-width:575px){.topbar-tip{display:none}}

/* ---------- 主导航 ---------- */
.nav-bar{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,244,239,.96);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:height var(--t),box-shadow var(--t),border-color var(--t),background var(--t);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height var(--t)}
.nav-bar.is-scrolled{border-bottom-color:var(--line);box-shadow:0 10px 24px -20px rgba(16,32,30,.5);background:rgba(246,244,239,.99)}
.nav-bar.is-scrolled .nav-inner{height:60px}

.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink);flex-shrink:0}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(150deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#F2F0EA;font-family:var(--mono);font-size:14px;font-weight:700;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em}
.brand-sub{font-size:11.5px;color:var(--ink-2);letter-spacing:.06em}

.nav-menu{display:flex;align-items:center;gap:6px;flex:1;justify-content:center}
.nav-menu a{
  position:relative;display:inline-block;padding:8px 12px;font-size:15px;color:var(--ink-2);
  border-radius:8px;transition:color var(--t),background var(--t);
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-menu a:hover{color:var(--brand);background:rgba(15,76,68,.05)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a[aria-current="page"]{color:var(--brand);font-weight:700}
.nav-menu a[aria-current="page"]::after{transform:scaleX(1)}

.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--card);cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
  transition:border-color var(--t),background var(--t);
}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--ink);transition:transform var(--t),opacity var(--t)}
.nav-toggle:hover{border-color:var(--brand);background:#fff}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn .arrow{display:inline-block;transition:transform var(--t)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--brand);color:#F2F0EA}
.btn-primary:hover{background:var(--brand-deep);color:#fff}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:rgba(15,76,68,.06);color:var(--brand-deep)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#C1512F;color:#fff}
.btn-ghost-light{border-color:rgba(242,240,234,.45);color:var(--on-dark);background:transparent}
.btn-ghost-light:hover{border-color:rgba(242,240,234,.9);background:rgba(242,240,234,.1);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;color:var(--brand);
  position:relative;
}
.link-arrow::after{content:"";position:absolute;left:0;right:18px;bottom:-3px;height:1px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--t)}
.link-arrow:hover::after{transform:scaleX(1)}
.link-arrow .arrow{transition:transform var(--t)}
.link-arrow:hover .arrow{transform:translateX(4px)}

/* ---------- 移动端侧滑导航 ---------- */
.mobile-nav{--bs-offcanvas-width:320px;background:var(--paper);border-left:1px solid var(--line)}
.mobile-nav .offcanvas-header{padding:20px 20px 12px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}
.mobile-nav .offcanvas-body{padding:18px 20px 28px;display:flex;flex-direction:column;gap:20px}
.btn-icon-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:var(--card);
  color:var(--ink-2);font-size:18px;line-height:1;cursor:pointer;transition:border-color var(--t),color var(--t);
}
.btn-icon-close:hover{border-color:var(--brand);color:var(--brand)}
.mobile-menu{display:flex;flex-direction:column}
.mobile-menu a{
  padding:14px 4px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.mobile-menu a::after{content:"→";color:var(--ink-2);transition:transform var(--t),color var(--t)}
.mobile-menu a:hover::after{transform:translateX(4px);color:var(--brand)}
.mobile-menu a[aria-current="page"]{color:var(--brand);font-weight:700}
.mobile-nav .nav-note{font-size:13px;color:var(--ink-2);line-height:1.7}

@media (max-width:991px){
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn{display:none}
}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--ink-2);padding:22px 0 0}
.crumbs li{display:flex;align-items:center;gap:10px}
.crumbs li+li::before{content:"";width:1px;height:12px;background:var(--line);display:inline-block}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--brand)}
.crumbs li[aria-current="page"]{color:var(--brand);font-weight:700}

/* ---------- 页面头 ---------- */
.page-head{
  position:relative;
  margin-top:18px;
  padding:74px 0 78px;
  background:
    linear-gradient(180deg,rgba(15,76,68,.12),rgba(15,76,68,.12)),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-head-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:center}
.page-head-text{background:rgba(246,244,239,.94);border:1px solid var(--line);border-radius:var(--radius-card);padding:36px 34px;box-shadow:var(--shadow-soft)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;color:var(--brand);
  text-transform:uppercase;font-weight:700;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.page-head h1{font-size:clamp(32px,4.2vw,50px);line-height:1.16;margin-bottom:18px}
.page-head .lead{font-size:17px;color:var(--ink-2);max-width:56ch}
.head-facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:30px;padding-top:24px;border-top:1px solid var(--line)}
.fact-num{display:block;font-family:var(--mono);font-size:30px;font-weight:700;color:var(--brand);letter-spacing:-.02em}
.fact-label{display:block;font-size:13px;color:var(--ink-2);margin-top:2px}
.page-head-media{position:relative}
.page-head-media img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);border:1px solid var(--line);box-shadow:var(--shadow-lift)}
.page-head-media figcaption{margin-top:12px;font-size:13px;color:var(--ink-2)}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-alt{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{font-size:clamp(26px,3.2vw,38px);margin-bottom:16px}
.section-head p{font-size:16.5px;color:var(--ink-2)}

/* ---------- 对照表 ---------- */
.compare{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--card);overflow:hidden;box-shadow:var(--shadow-soft)}
.compare-row{display:grid;grid-template-columns:200px minmax(0,1fr) minmax(0,1fr)}
.compare-row+.compare-row{border-top:1px solid var(--line)}
.compare-cell{padding:22px 24px;font-size:15.5px;color:var(--ink);border-left:1px solid var(--line)}
.compare-cell:first-child{border-left:0;background:#FAF8F4}
.compare-head .compare-cell{
  font-size:16px;font-weight:700;color:var(--brand);background:#F1EFE8;
  padding-top:18px;padding-bottom:18px;
}
.compare-head .compare-cell:nth-child(3){color:var(--accent)}
.compare-key{color:var(--ink-2);font-size:14px;font-weight:700;letter-spacing:.02em}
.compare-note{margin-top:16px;font-size:13.5px;color:var(--ink-2)}
@media (max-width:900px){
  .compare-row{grid-template-columns:minmax(0,1fr)}
  .compare-cell{border-left:0;border-top:1px solid var(--line)}
  .compare-row .compare-cell:first-child{border-top:0}
  .compare-head{display:none}
  .compare-cell::before{
    content:attr(data-label);display:block;font-size:12px;letter-spacing:.1em;
    color:var(--ink-2);text-transform:uppercase;margin-bottom:6px;
  }
}

/* ---------- 场景步骤列表 ---------- */
.scene-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line)}
.scene-item{display:grid;grid-template-columns:120px minmax(0,1fr);gap:28px;padding:34px 0;border-bottom:1px solid var(--line)}
.scene-num{font-family:var(--mono);font-size:64px;line-height:.9;color:var(--brand);opacity:.16;font-weight:700}
.scene-body h3{font-size:21px;margin-bottom:10px}
.scene-body p{color:var(--ink-2);font-size:15.5px;max-width:72ch}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--card);font-size:12.5px;color:var(--ink-2);
}
.tag-accent{border-color:rgba(217,96,59,.35);color:var(--accent);background:rgba(217,96,59,.06)}
@media (max-width:767px){
  .scene-item{grid-template-columns:minmax(0,1fr);gap:12px}
  .scene-num{font-size:48px;opacity:.2}
}

/* ---------- 准备清单 ---------- */
.check-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:48px;align-items:start}
.check-list{display:flex;flex-direction:column;gap:14px}
.check-item{
  display:grid;grid-template-columns:34px minmax(0,1fr);gap:16px;align-items:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-soft);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.check-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:#D6CFC2}
.check-mark{
  width:34px;height:34px;border-radius:10px;background:rgba(15,76,68,.08);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:14px;font-weight:700;
}
.check-item h3{font-size:17px;margin-bottom:4px}
.check-item p{font-size:14.5px;color:var(--ink-2)}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-soft);
}
.side-card h3{font-size:19px;margin-bottom:14px}
.side-list{display:flex;flex-direction:column;gap:12px}
.side-list li{display:grid;grid-template-columns:18px minmax(0,1fr);gap:12px;font-size:15px;color:var(--ink-2)}
.side-list li span.dot{width:6px;height:6px;margin-top:10px;border-radius:50%;background:var(--accent)}
.side-card img{margin-top:22px;aspect-ratio:16/10;object-fit:cover;width:100%}
@media (max-width:900px){.check-layout{grid-template-columns:minmax(0,1fr);gap:32px}}

/* ---------- 深色 CTA ---------- */
.cta-band{background:var(--dark);color:var(--on-dark);padding:88px 0;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;opacity:.14;
}
.cta-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:56px;align-items:start}
.cta-band h2{color:#fff;font-size:clamp(26px,3.2vw,36px);margin-bottom:16px}
.cta-band p{color:#B9C6C1;font-size:16px;max-width:60ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 18px}
.cta-note{font-size:13px;color:#8E9D97}
.cta-side{border-left:1px solid rgba(242,240,234,.18);padding-left:32px}
.cta-side h3{color:#fff;font-size:18px;margin-bottom:16px}
.cta-side-list{display:flex;flex-direction:column;gap:12px}
.cta-side-list li{font-size:15px;color:#B9C6C1}
.cta-side-list a{color:var(--on-dark);border-bottom:1px solid rgba(242,240,234,.4)}
.cta-side-list a:hover{color:#fff;border-bottom-color:#fff}
@media (max-width:900px){
  .cta-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .cta-side{border-left:0;border-top:1px solid rgba(242,240,234,.18);padding-left:0;padding-top:26px}
}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-soft);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:#D6CFC2}
.rel-card figure{margin:0;overflow:hidden}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform var(--t)}
.rel-card:hover img{transform:scale(1.03)}
.rel-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:18px}
.rel-body p{font-size:14.5px;color:var(--ink-2)}
.rel-body .link-arrow{margin-top:auto;font-size:14px}
@media (max-width:991px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575px){.rel-grid{grid-template-columns:minmax(0,1fr)}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#A9B6B1;padding:76px 0 28px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(242,240,234,.14)}
.site-footer .brand{color:#F2F0EA}
.site-footer .brand-name{color:#F2F0EA}
.site-footer .brand-sub{color:#8E9D97}
.site-footer .brand-mark{background:linear-gradient(150deg,var(--brand-2),var(--brand))}
.footer-about{margin-top:16px;font-size:14px;color:#8E9D97;max-width:30ch}
.site-footer h4{font-size:15px;color:#F2F0EA;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links li{color:#8E9D97}
.footer-links a{color:#A9B6B1;border-bottom:1px solid transparent;padding-bottom:1px}
.footer-links a:hover{color:#fff;border-bottom-color:var(--accent)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:24px;font-size:13.5px;color:#8E9D97}
.to-top{color:#A9B6B1}
.to-top:hover{color:#fff;border-bottom:1px solid var(--accent)}
@media (max-width:991px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ---------- 进入动画 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --green:#0F4C44;
  --green-2:#14655A;
  --green-deep:#0B3A34;
  --dark:#0B1F1C;
  --orange:#D9603B;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --line:#E4DFD6;
  --ink:#16201E;
  --ink-2:#5A6561;
  --reverse:#F2F0EA;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(16,32,30,.06),0 12px 28px -18px rgba(16,32,30,.28);
  --shadow-2:0 2px 4px rgba(16,32,30,.07),0 22px 44px -24px rgba(16,32,30,.32);
  --ease:cubic-bezier(.22,.61,.36,1);
  --tr:220ms cubic-bezier(.22,.61,.36,1);

  --bs-primary:#0F4C44;
  --bs-primary-rgb:15,76,68;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#16201E;
  --bs-border-color:#E4DFD6;
  --bs-border-radius:10px;
  --bs-link-color:#0F4C44;
  --bs-link-hover-color:#0B3A34;
  --bs-focus-ring-color:rgba(217,96,59,.55);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--green);text-decoration:none;transition:color var(--tr),background-size var(--tr)}
a:hover{color:var(--green-deep)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.25;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;box-shadow:0 0 0 4px rgba(217,96,59,.18)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:767px){.container{padding:0 20px}}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--dark);color:var(--reverse);font-size:13px}
.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.topbar-domain{font-family:"JetBrains Mono","IBM Plex Mono",ui-monospace,monospace;letter-spacing:.02em;color:#CFE0DB}
.topbar-tip{color:#9FB3AE;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:16px;flex-shrink:0}
.topbar-link{color:#CFE0DB;border-bottom:1px solid transparent;padding-bottom:1px}
.topbar-link:hover{color:#fff;border-bottom-color:var(--orange)}
.topbar .btn-xs{height:26px;padding:0 12px;font-size:12.5px;border-radius:999px;border:1px solid rgba(242,240,234,.45);background:transparent;color:var(--reverse);display:inline-flex;align-items:center}
.topbar .btn-xs:hover{background:rgba(242,240,234,.12);border-color:rgba(242,240,234,.8);color:#fff}
@media (max-width:767px){.topbar-tip{display:none}.topbar-inner{gap:12px}}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:height var(--tr),box-shadow var(--tr),border-color var(--tr),background var(--tr);
}
.site-header .header-inner{height:72px;display:flex;align-items:center;gap:28px;transition:height var(--tr)}
.site-header.is-scrolled{background:rgba(246,244,239,.96);border-bottom-color:var(--line);box-shadow:0 10px 24px -22px rgba(16,32,30,.45)}
.site-header.is-scrolled .header-inner{height:60px}

.brand{display:inline-flex;align-items:center;gap:12px;height:40px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--green);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:"JetBrains Mono","IBM Plex Mono",ui-monospace,monospace;font-size:14px;letter-spacing:.04em;font-weight:600;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16.5px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.brand-sub{font-size:12px;color:var(--ink-2);letter-spacing:.04em}

.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 12px;
  font-size:15px;color:var(--ink-2);border-radius:8px;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;background:var(--green);
  transform:scaleX(0);transform-origin:left;transition:transform var(--tr);
}
.nav-menu a:hover{color:var(--ink);background:rgba(15,76,68,.06)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a[aria-current="page"]{color:var(--green);font-weight:600}
.nav-menu a[aria-current="page"]::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--ink);font-size:13px;cursor:pointer;transition:border-color var(--tr),background var(--tr);
}
.nav-toggle:hover{border-color:var(--green);color:var(--green)}

@media (max-width:1199px){
  .nav-menu a{padding:0 9px;font-size:14px}
}
@media (max-width:991px){
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-menu{
    position:fixed;top:0;right:0;width:320px;max-width:86vw;height:100vh;
    background:#fff;flex-direction:column;align-items:stretch;gap:2px;padding:88px 20px 28px;
    box-shadow:-24px 0 48px -30px rgba(16,32,30,.5);
    transform:translateX(102%);transition:transform 280ms var(--ease);margin-left:0;z-index:80;overflow-y:auto;
  }
  .nav-menu.is-open{transform:translateX(0)}
  .nav-menu a{height:48px;padding:0 10px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-menu a::after{left:10px;right:auto;width:22px;bottom:0}
}
@media (max-width:575px){
  .header-actions .btn-primary{display:none}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:background var(--tr),color var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);
}
.btn .arrow{transition:transform var(--tr);display:inline-block}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-deep);color:#fff}
.btn-outline{background:transparent;color:var(--green);border-color:var(--green)}
.btn-outline:hover{background:rgba(15,76,68,.08);color:var(--green-deep)}
.btn-light{background:var(--reverse);color:var(--dark)}
.btn-light:hover{background:#fff;color:var(--dark)}
.btn-on-dark{background:var(--green);color:#fff;border-color:rgba(242,240,234,.24)}
.btn-on-dark:hover{background:var(--green-2);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px}

.text-link{
  color:var(--green);font-weight:600;background-image:linear-gradient(currentColor,currentColor);
  background-repeat:no-repeat;background-size:0% 1px;background-position:0 100%;padding-bottom:2px;
}
.text-link:hover{background-size:100% 1px}

/* ============ 通用区块 ============ */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:52px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--green-2);
  font-family:"JetBrains Mono","IBM Plex Mono",ui-monospace,monospace;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--orange)}
.h2{font-size:clamp(26px,3.2vw,38px);margin:14px 0 16px}
.section-sub{color:var(--ink-2);font-size:16.5px;max-width:660px}
.hr-line{height:1px;background:var(--line);border:0;margin:0}

/* ============ 页面头 ============ */
.page-head{
  position:relative;overflow:hidden;
  background-image:
    linear-gradient(180deg,rgba(246,244,239,.95) 0%,rgba(246,244,239,.88) 58%,rgba(246,244,239,.99) 100%),
    linear-gradient(rgba(15,76,68,.12),rgba(15,76,68,.12)),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover,cover,cover;
  background-position:center,center,center;
  border-bottom:1px solid var(--line);
}
.page-head-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
  padding:64px 0 76px;
}
.crumbs{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-2);margin-bottom:26px;flex-wrap:wrap}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--green)}
.crumb-sep{width:1px;height:12px;background:var(--line);display:inline-block}
.crumb-current{color:var(--green);font-weight:600}
.page-head h1{font-size:clamp(32px,4.4vw,54px);line-height:1.15;letter-spacing:-.025em;margin-bottom:20px}
.page-head .lead{font-size:17px;color:var(--ink-2);max-width:560px}
.page-head-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.page-head-figure{margin:0}
.page-head-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--shadow-1);border:1px solid var(--line);
}
@media (max-width:991px){
  .page-head-grid{grid-template-columns:1fr;gap:36px;padding:44px 0 56px}
  .page-head-figure{order:-1}
}

/* ============ 数据条 ============ */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.62)}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.stat{padding:34px 32px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-value{
  font-family:"JetBrains Mono","IBM Plex Mono",ui-monospace,monospace;
  font-size:clamp(30px,3.4vw,42px);font-weight:600;color:var(--green);line-height:1;letter-spacing:-.02em;
}
.stat-label{margin-top:12px;font-size:14.5px;color:var(--ink-2)}
@media (max-width:767px){
  .stats-grid{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--line);padding:24px 20px}
  .stat:last-child{border-bottom:0}
}

/* ============ 步骤条 ============ */
.step-list{position:relative;margin-top:8px}
.step-item{
  position:relative;display:grid;grid-template-columns:96px 1fr;gap:28px;
  padding:30px 0 30px 0;border-top:1px solid var(--line);
}
.step-item:last-child{border-bottom:1px solid var(--line)}
.step-num{
  font-family:"JetBrains Mono","IBM Plex Mono",ui-monospace,monospace;
  font-size:64px;font-weight:600;line-height:.9;color:var(--green);opacity:.16;letter-spacing:-.03em;
}
.step-body h3{font-size:21px;margin-bottom:10px}
.step-body p{color:var(--ink-2);max-width:720px}
.step-note{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  font-size:13.5px;color:var(--green-2);background:rgba(15,76,68,.07);
  border-radius:999px;padding:5px 14px;
}
.step-note::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}
@media (max-width:767px){
  .step-item{grid-template-columns:1fr;gap:14px;padding:26px 0}
  .step-num{font-size:48px}
}

/* ============ 材料与说明 ============ */
.split{display:grid;grid-template-columns:1.5fr 1fr;gap:28px;align-items:start}
@media (max-width:991px){.split{grid-template-columns:1fr}}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--shadow-1);transition:transform var(--tr),box-shadow var(--tr);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.card h3{font-size:20px;margin-bottom:14px}
.card p{color:var(--ink-2)}

.check-list li{
  display:grid;grid-template-columns:22px 1fr;gap:14px;
  padding:16px 0;border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list li::before{
  content:"";width:9px;height:9px;margin-top:11px;border-radius:2px;background:var(--orange);
}
.check-list strong{display:block;font-size:16.5px;color:var(--ink);font-weight:600;margin-bottom:2px}
.check-list span{font-size:15px;color:var(--ink-2)}

.side-note{background:#fff;border:1px solid var(--line);border-left:3px solid var(--green);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-1)}
.side-note h3{font-size:18px;margin-bottom:12px}
.side-note ul li{padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--ink-2)}
.side-note ul li:last-child{border-bottom:0;padding-bottom:0}
.side-note ul li b{color:var(--ink);font-weight:600}

/* ============ 退回原因 ============ */
.reason-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:8px}
@media (max-width:767px){.reason-list{grid-template-columns:1fr}}
.reason{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.reason:hover{transform:translateY(-4px);box-shadow:var(--shadow-1);border-color:#D6D0C4}
.reason h3{font-size:18px;margin-bottom:8px}
.reason p{color:var(--ink-2);font-size:15px}

/* ============ CTA + 表单 ============ */
.cta-band{background:var(--dark);color:var(--reverse);padding:88px 0}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start}
.cta-band h2{color:#fff;font-size:clamp(26px,3.2vw,36px);margin-bottom:16px}
.cta-band p.cta-text{color:#A9BEB9;max-width:520px}
.cta-contact{margin-top:36px;border-top:1px solid rgba(242,240,234,.18);padding-top:26px}
.cta-contact li{padding:12px 0;font-size:15px;color:#CFE0DB;border-bottom:1px dashed rgba(242,240,234,.14)}
.cta-contact li:last-child{border-bottom:0}
.cta-contact b{color:#fff;font-weight:600;margin-right:10px}
.apply-form{background:#122A26;border:1px solid rgba(242,240,234,.16);border-radius:var(--r-card);padding:30px}
.form-field{margin-bottom:20px}
.form-field label{display:block;font-size:14px;color:#A9BEB9;margin-bottom:8px}
.form-control{
  width:100%;height:52px;border-radius:var(--r-btn);border:1px solid #2A403B;background:#0E2320;
  color:#fff;padding:0 16px;font-size:15.5px;transition:border-color var(--tr),box-shadow var(--tr);
}
.form-control::placeholder{color:#5F726D}
.form-control:focus{outline:none;border-color:var(--green-2);box-shadow:0 0 0 4px rgba(20,101,90,.28)}
.apply-form .btn{width:100%;margin-top:6px}
.form-note{margin-top:14px;font-size:13px;color:#8AA09B;min-height:18px}
.form-note.is-ok{color:#EFC3B3}
@media (max-width:991px){.cta-grid{grid-template-columns:1fr;gap:36px}}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
@media (max-width:991px){.faq-layout{grid-template-columns:1fr;gap:30px}}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;position:relative;
  transition:transform 240ms var(--ease),box-shadow var(--tr),border-color var(--tr);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--orange);
  transform:scaleY(0);transform-origin:top;transition:transform 240ms var(--ease);
}
.faq-item.is-open{transform:translateX(2px);box-shadow:var(--shadow-1);border-color:#D6D0C4}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 26px;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--green);
  font-family:"JetBrains Mono",ui-monospace,monospace;font-size:15px;line-height:1;
  transition:transform 240ms var(--ease),background var(--tr),color var(--tr);
}
.faq-item.is-open .faq-icon{background:var(--green);color:#fff;border-color:var(--green);transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease)}
.faq-a p{padding:0 26px 24px;color:var(--ink-2);font-size:15.5px;max-width:680px}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:991px){.rel-grid{grid-template-columns:1fr 1fr}}
@media (max-width:575px){.rel-grid{grid-template-columns:1fr}}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--tr),box-shadow var(--tr);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.rel-card figure{margin:0;overflow:hidden}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 420ms var(--ease)}
.rel-card:hover img{transform:scale(1.03)}
.rel-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  font-size:12.5px;color:var(--green);background:rgba(15,76,68,.08);
  border-radius:999px;padding:4px 12px;letter-spacing:.02em;
}
.rel-body h3{font-size:19px}
.rel-body p{font-size:14.5px;color:var(--ink-2)}
.rel-link{margin-top:6px;font-size:14.5px;font-weight:600;color:var(--green)}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#A9BEB9;padding:76px 0 0;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:56px}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr}}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:#7E938E}
.site-footer .brand-mark{background:var(--green-2)}
.footer-about{margin-top:20px;color:#8AA09B;font-size:14px;max-width:280px}
.site-footer h4{color:#fff;font-size:15.5px;margin-bottom:18px;letter-spacing:.02em}
.footer-links li{padding:7px 0}
.footer-links a,.footer-links span{color:#A9BEB9}
.footer-links a{
  background-image:linear-gradient(var(--orange),var(--orange));background-repeat:no-repeat;
  background-size:0% 1px;background-position:0 100%;transition:background-size var(--tr),color var(--tr);
}
.footer-links a:hover{color:#fff;background-size:100% 1px}
.footer-bottom{
  border-top:1px solid rgba(242,240,234,.14);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#7E938E;
}
.to-top{color:#CFE0DB}
.to-top:hover{color:#fff}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 620ms var(--ease),transform 620ms var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
  .card:hover,.reason:hover,.rel-card:hover,.faq-item.is-open{transform:none}
}

/* roulang page: category3 */
:root{
  --brand:#0F4C44;
  --brand-light:#14655A;
  --brand-deep:#0B3A34;
  --dark:#0B1F1C;
  --accent:#D9603B;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4DFD6;
  --text:#16201E;
  --text-soft:#5A6561;
  --inverse:#F2F0EA;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(16,32,30,.06);
  --shadow-md:0 1px 2px rgba(16,32,30,.06), 0 12px 28px -18px rgba(16,32,30,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:220ms cubic-bezier(.22,.61,.36,1);
  --mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --bs-primary:#0F4C44;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#16201E;
  --bs-border-color:#E4DFD6;
  --bs-border-radius:14px;
  --bs-link-color:#0F4C44;
  --bs-link-hover-color:#0B3A34;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::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:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.004em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.2;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  box-shadow:0 0 0 4px rgba(217,96,59,.16);
}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:767px){.container{padding:0 20px}}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--dark);color:#B9C5C0;font-size:13px;line-height:1}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:36px}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.topbar-domain{color:#E7EDEA;font-family:var(--mono);letter-spacing:.02em}
.topbar-note{color:#8D9C96;position:relative;padding-left:14px}
.topbar-note::before{content:"";position:absolute;left:0;top:50%;width:1px;height:12px;background:rgba(255,255,255,.18);transform:translateY(-50%)}
.topbar-right{display:flex;align-items:center;gap:16px}
.topbar-link{color:#C9D5D0;border-bottom:1px solid transparent;transition:color var(--t),border-color var(--t)}
.topbar-link:hover{color:#fff;border-bottom-color:rgba(255,255,255,.5)}
.topbar-btn{display:inline-flex;align-items:center;height:24px;padding:0 12px;border:1px solid rgba(255,255,255,.34);border-radius:999px;color:#EDF2EF;transition:background var(--t),border-color var(--t)}
.topbar-btn:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6)}
@media (max-width:760px){.topbar-note{display:none}}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--t),border-color var(--t),background var(--t);
}
.site-header.is-stuck{
  background:rgba(246,244,239,.97);
  border-bottom-color:var(--line);
  box-shadow:0 12px 26px -24px rgba(16,32,30,.6);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:26px;height:72px;transition:height var(--t)}
.site-header.is-stuck .header-inner{height:60px}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(150deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#F2F0EA;font-family:var(--mono);font-size:14px;font-weight:600;
  display:flex;align-items:center;justify-content:center;letter-spacing:.04em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16.5px;font-weight:700;color:var(--text);letter-spacing:-.01em}
.brand-sub{font-size:12px;color:var(--text-soft);letter-spacing:.02em}

.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-menu a{
  position:relative;padding:9px 13px;font-size:15px;color:var(--text-soft);
  border-radius:8px;transition:color var(--t),background var(--t);
}
.nav-menu a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-menu a:hover{color:var(--brand)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a[aria-current="page"]{color:var(--brand);font-weight:600}
.nav-menu a[aria-current="page"]::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;
  transition:border-color var(--t),background var(--t);
}
.menu-toggle:hover{border-color:var(--brand);background:rgba(15,76,68,.05)}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand);border-radius:2px}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
@media (max-width:991px){
  .nav-menu{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{height:64px}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:600;white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.btn .arrow{transition:transform var(--t);display:inline-block}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);color:#fff}
.btn-ghost{border:1px solid rgba(15,76,68,.32);color:var(--brand);background:transparent}
.btn-ghost:hover{border-color:var(--brand);background:rgba(15,76,68,.06)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#C2502E;color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px}
.link-underline{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;
  position:relative;padding-bottom:3px;
}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.link-underline:hover::after{transform:scaleX(1)}

/* ============ 通用板块 ============ */
.section{padding:100px 0}
.section--tight{padding:76px 0}
.section--line{border-top:1px solid var(--line)}
.section--dark{background:var(--dark);color:var(--inverse)}
.section-head{max-width:720px;margin-bottom:48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;
  font-size:12.5px;font-weight:600;letter-spacing:.16em;color:var(--brand-light);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent)}
h2.section-title{font-size:clamp(26px,3.2vw,38px)}
.section-desc{margin-top:18px;font-size:16px;color:var(--text-soft);max-width:660px}
@media (max-width:767px){
  .section{padding:68px 0}
  .section--tight{padding:56px 0}
  .section-head{margin-bottom:34px}
}

/* ============ 页面头 ============ */
.page-head{
  padding:34px 0 76px;
  background:linear-gradient(180deg,#FBFAF6 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13.5px;color:var(--text-soft);margin-bottom:28px}
.crumbs a{transition:color var(--t)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{width:1px;height:12px;background:var(--line)}
.crumbs .current{color:var(--brand);font-weight:600}
.page-head-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:60px;align-items:center}
.page-head h1{font-size:clamp(32px,4.4vw,52px);line-height:1.14}
.page-head .lead{margin-top:22px;font-size:17px;color:var(--text-soft);max-width:600px}
.head-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.head-stats{
  list-style:none;display:flex;flex-wrap:wrap;gap:46px;
  margin-top:40px;padding-top:26px;border-top:1px solid var(--line);
}
.head-stats li{display:flex;flex-direction:column;gap:4px}
.head-stats strong{font-family:var(--mono);font-size:28px;line-height:1;color:var(--brand)}
.head-stats span{font-size:13.5px;color:var(--text-soft)}
.page-head-figure{
  border-radius:16px;overflow:hidden;box-shadow:var(--shadow-md);
  border:1px solid var(--line);background:#E9E5DC;
}
.page-head-figure img{width:100%;height:auto;object-fit:cover;aspect-ratio:4/3}
@media (max-width:991px){
  .page-head-grid{grid-template-columns:1fr;gap:36px}
  .page-head{padding-bottom:56px}
}

/* ============ 卡片矩阵 2:1 ============ */
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.m-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.m-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D9D3C7}
.m-card--wide{grid-column:span 2}
.m-card--wide{display:grid;grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr)}
.card-media{position:relative;overflow:hidden;background:#E9E5DC;aspect-ratio:16/10}
.m-card--wide .card-media{aspect-ratio:auto;min-height:100%}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 460ms var(--ease)}
.m-card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:26px 28px 28px;display:flex;flex-direction:column;gap:12px}
.card-body h3{font-size:20px}
.card-body p{font-size:15px;color:var(--text-soft)}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(15,76,68,.08);color:var(--brand-light);border:1px solid rgba(15,76,68,.12);
}
.tick-list{list-style:none;display:grid;gap:9px;margin-top:4px}
.tick-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-soft)}
.tick-list li::before{
  content:"";position:absolute;left:0;top:.66em;width:8px;height:8px;border-radius:2px;
  background:var(--accent);opacity:.9;
}
@media (max-width:1023px){
  .matrix{grid-template-columns:repeat(2,1fr)}
  .m-card--wide{grid-column:span 2}
}
@media (max-width:767px){
  .matrix{grid-template-columns:1fr}
  .m-card--wide{grid-column:span 1;grid-template-columns:1fr}
  .m-card--wide .card-media{min-height:200px}
  .card-body{padding:22px 22px 24px}
}

/* ============ 流程步骤 ============ */
.flow{
  list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:0 30px;
  border-top:1px solid var(--line);padding-top:0;
}
.flow-item{position:relative;padding:36px 0 0}
.flow-item::before{
  content:"";position:absolute;top:-1px;left:0;width:46px;height:2px;background:var(--accent);
}
.flow-num{
  display:block;font-family:var(--mono);font-size:54px;line-height:.85;font-weight:600;
  color:rgba(15,76,68,.15);letter-spacing:.02em;margin-bottom:16px;
}
.flow-item h3{font-size:19px;margin-bottom:10px}
.flow-item p{font-size:14.8px;color:var(--text-soft)}
@media (max-width:991px){
  .flow{grid-template-columns:repeat(2,1fr);gap:0 26px}
  .flow-item{padding-top:30px;margin-bottom:28px}
}
@media (max-width:575px){
  .flow{grid-template-columns:1fr}
  .flow-num{font-size:44px}
}

/* ============ 字段对照 ============ */
.spec-grid{display:grid;grid-template-columns:.86fr 1.14fr;gap:64px;align-items:start}
.spec-side{position:sticky;top:120px}
.spec-side .btn{margin-top:30px}
.spec-list{list-style:none;border-top:1px solid var(--line)}
.spec-list li{
  display:grid;grid-template-columns:150px minmax(0,1fr);gap:24px;
  padding:20px 0;border-bottom:1px solid var(--line);align-items:baseline;
}
.spec-k{font-size:15.5px;font-weight:600;color:var(--brand)}
.spec-v{font-size:15px;color:var(--text-soft)}
@media (max-width:991px){
  .spec-grid{grid-template-columns:1fr;gap:36px}
  .spec-side{position:static}
}
@media (max-width:575px){
  .spec-list li{grid-template-columns:1fr;gap:6px}
}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:.72fr 1.28fr;gap:56px;align-items:start}
.faq-side p{margin-top:18px;font-size:15.5px;color:var(--text-soft)}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);margin-bottom:14px;overflow:hidden;
  transition:box-shadow var(--t),border-color var(--t);
}
.faq-item[open]{box-shadow:var(--shadow-md);border-color:#D9D3C7}
.faq-q{
  position:relative;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:22px 26px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--brand);
  transition:padding-left var(--t),color var(--t);
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::before{
  content:"";position:absolute;left:0;top:50%;width:3px;height:26px;border-radius:0 3px 3px 0;
  background:var(--accent);transform:translateY(-50%) scaleY(0);
  transition:transform 240ms var(--ease);
}
.faq-item[open] .faq-q{padding-left:30px}
.faq-item[open] .faq-q::before{transform:translateY(-50%) scaleY(1)}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px;margin-top:6px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-light);border-radius:2px;
  transition:transform 240ms var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-a{padding:0 30px 24px;font-size:15.4px;color:var(--text-soft);max-width:820px}
@media (max-width:991px){
  .faq-wrap{grid-template-columns:1fr;gap:30px}
}
@media (max-width:575px){
  .faq-q{padding:18px 20px;font-size:16px}
  .faq-a{padding:0 20px 20px}
}

/* ============ CTA 深色区 ============ */
.cta-panel{
  background:var(--dark);color:var(--inverse);border-radius:18px;
  padding:56px;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;
}
.cta-panel h2{font-size:clamp(25px,3vw,34px);color:#fff}
.cta-panel .cta-lead{margin-top:18px;font-size:16px;color:#B9C5C0;max-width:460px}
.cta-meta{list-style:none;display:grid;gap:12px;margin-top:36px}
.cta-meta li{font-size:14.5px;color:#9FADA7;display:flex;gap:10px;align-items:baseline}
.cta-meta li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto;transform:translateY(-2px)}
.cta-form{
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-card);padding:30px 30px 32px;display:grid;gap:18px;
}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:14px;color:#B9C5C0}
.input{
  width:100%;height:52px;padding:0 16px;border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.16);background:#fff;color:var(--text);
  font-size:15.5px;transition:border-color var(--t),box-shadow var(--t);
}
.input::placeholder{color:#9AA39E}
.input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(15,76,68,.16)}
.form-tip{font-size:13px;color:#8D9C96}
@media (max-width:991px){
  .cta-panel{grid-template-columns:1fr;gap:36px;padding:40px 30px;border-radius:16px}
}
@media (max-width:575px){
  .cta-panel{padding:32px 22px}
  .cta-form{padding:22px 20px 24px}
}

/* ============ 相关分类 ============ */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.related-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;display:flex;flex-direction:column;gap:12px;
  box-shadow:var(--shadow-sm);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D9D3C7}
.related-card h3{font-size:16.5px;line-height:1.4}
.related-card p{font-size:14px;color:var(--text-soft)}
.related-card .more{margin-top:auto;font-size:13.5px;color:var(--brand);font-weight:600;display:inline-flex;gap:6px;align-items:center}
.related-card .more .arrow{transition:transform var(--t)}
.related-card:hover .more .arrow{transform:translateX(4px)}
@media (max-width:1023px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575px){.related-grid{grid-template-columns:1fr}}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#B9C5C0;padding:76px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px;padding-bottom:52px}
.site-footer .brand-name{color:#F2F0EA}
.site-footer .brand-sub{color:#8D9C96}
.site-footer .brand-mark{background:linear-gradient(150deg,var(--brand-light) 0%,var(--brand) 100%)}
.footer-about{margin-top:20px;font-size:14.5px;color:#9FADA7;max-width:280px}
.site-footer h4{font-size:14.5px;color:#EDF2EF;margin-bottom:18px;letter-spacing:.01em}
.footer-links{list-style:none;display:grid;gap:12px}
.footer-links li{font-size:14.5px;color:#9FADA7}
.footer-links a{position:relative;display:inline-block;color:#B9C5C0;transition:color var(--t)}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--accent);
  transition:width var(--t);
}
.footer-links a:hover{color:#fff}
.footer-links a:hover::after{width:100%}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:13.5px;color:#8D9C96;
}
.to-top{color:#B9C5C0;transition:color var(--t)}
.to-top:hover{color:#fff}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .site-footer{padding-top:56px}
}

/* ============ 移动端侧滑 ============ */
.offcanvas.offcanvas-end{width:320px;background:var(--bg);border-left:1px solid var(--line)}
.offcanvas-header{padding:20px 22px;border-bottom:1px solid var(--line)}
.offcanvas-title{font-size:16px;font-weight:700;color:var(--brand)}
.offcanvas-body{padding:20px 22px 32px}
.nav-list{list-style:none;display:grid;gap:4px;margin-bottom:26px}
.nav-list a{
  display:block;padding:12px 14px;border-radius:10px;font-size:15.5px;color:var(--text);
  transition:background var(--t),color var(--t);
}
.nav-list a:hover{background:rgba(15,76,68,.06);color:var(--brand)}
.nav-list a[aria-current="page"]{background:rgba(15,76,68,.08);color:var(--brand);font-weight:600}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 560ms var(--ease),transform 560ms var(--ease);transition-delay:var(--d,0ms)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --bs-primary:#0F4C44;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#16201E;
  --bs-border-color:#E4DFD6;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;

  --ink:#0F4C44;
  --ink-2:#14655A;
  --ink-deep:#0B3A34;
  --deep:#0B1F1C;
  --accent:#D9603B;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4DFD6;
  --text:#16201E;
  --muted:#5A6561;
  --inverse:#F2F0EA;
  --mono:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow:0 1px 2px rgba(16,32,30,.06), 0 12px 28px -18px rgba(16,32,30,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --step:220ms;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--bs-font-sans-serif);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.2;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
input{font:inherit;color:inherit;}
::selection{background:rgba(15,76,68,.16);}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
@media (min-width:1400px){.container{max-width:1280px;}}
@media (max-width:767px){.container{padding-left:20px;padding-right:20px;}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--deep);color:var(--inverse);font-size:13px;}
.topbar-inner{display:flex;align-items:center;gap:16px;min-height:36px;}
.topbar-id{font-family:var(--mono);letter-spacing:.04em;opacity:.92;}
.topbar-note{opacity:.6;padding-left:16px;border-left:1px solid rgba(242,240,234,.2);}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.topbar-link{color:rgba(242,240,234,.82);border-bottom:1px solid transparent;transition:border-color var(--step) var(--ease),color var(--step) var(--ease);}
.topbar-link:hover{color:#fff;border-bottom-color:var(--accent);}
.btn-xs{height:26px;padding:0 12px;font-size:12px;border-radius:8px;}

/* ---------- 主导航 ---------- */
.navbar{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:background var(--step) var(--ease),border-color var(--step) var(--ease),box-shadow var(--step) var(--ease);
}
.navbar.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 10px 22px -20px rgba(16,32,30,.55);}
.navbar-inner{display:flex;align-items:center;gap:26px;height:72px;transition:height var(--step) var(--ease);}
.navbar.is-scrolled .navbar-inner{height:60px;}

.brand{display:flex;align-items:center;gap:11px;flex:none;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-family:var(--mono);font-size:13px;letter-spacing:.06em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.24;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.02em;}

.nav-menu{display:flex;align-items:center;gap:24px;margin-left:auto;}
.nav-menu a{
  position:relative;font-size:15px;color:var(--muted);padding:6px 0;
  transition:color var(--step) var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform var(--step) var(--ease);
}
.nav-menu a:hover{color:var(--ink);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a[aria-current="page"]{color:var(--ink);font-weight:600;}
.nav-menu a[aria-current="page"]::after{transform:scaleX(1);}

.nav-side{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{
  display:none;width:44px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;gap:3px;flex-direction:column;
  transition:border-color var(--step) var(--ease);
}
.nav-toggle:hover{border-color:var(--ink);}
.nav-toggle span{display:block;width:17px;height:1.6px;background:var(--ink);border-radius:2px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background var(--step) var(--ease),color var(--step) var(--ease),border-color var(--step) var(--ease),transform var(--step) var(--ease);
}
.btn .arrow{transition:transform var(--step) var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--ink-deep);}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:rgba(15,76,68,.07);}
.btn-ghost{background:transparent;border-color:rgba(242,240,234,.42);color:var(--inverse);}
.btn-ghost:hover{border-color:#fff;color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  box-shadow:0 0 0 4px rgba(217,96,59,.18);
  border-radius:var(--r-btn);
}

/* ---------- 移动端抽屉 ---------- */
.drawer-scrim{
  position:fixed;inset:0;background:rgba(11,31,28,.44);z-index:70;
  opacity:0;visibility:hidden;transition:opacity 260ms var(--ease),visibility 260ms var(--ease);
}
.drawer-scrim.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:88vw;z-index:80;
  background:var(--paper);padding:20px 22px 32px;overflow-y:auto;
  transform:translateX(102%);transition:transform 280ms var(--ease);
  box-shadow:-22px 0 44px -30px rgba(16,32,30,.6);
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);background:#fff;border-radius:9px;font-size:18px;line-height:1;cursor:pointer;}
.drawer-nav{display:flex;flex-direction:column;padding:14px 0 20px;}
.drawer-nav a{padding:13px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--muted);}
.drawer-nav a[aria-current="page"]{color:var(--ink);font-weight:600;}
.drawer .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--muted);margin-bottom:22px;}
.crumbs a{color:var(--muted);transition:color var(--step) var(--ease);}
.crumbs a:hover{color:var(--ink);}
.crumbs .sep{color:#c8c1b4;}
.crumbs .current{color:var(--ink);font-weight:600;}

/* ---------- 页面头 ---------- */
.page-head{padding:52px 0 72px;background:var(--paper);}
.page-head-grid{display:grid;grid-template-columns:1.3fr .8fr;gap:56px;align-items:center;}
.page-title{font-size:clamp(30px,4.2vw,50px);letter-spacing:-.02em;line-height:1.16;}
.page-lead{margin-top:20px;color:var(--muted);font-size:17px;max-width:56ch;}
.page-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--muted);
}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ink-2);}
.page-figure{position:relative;}
.page-figure img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--shadow);
}
.page-figure .tag-float{
  position:absolute;left:18px;bottom:18px;background:rgba(11,31,28,.82);color:var(--inverse);
  font-size:13px;padding:8px 14px;border-radius:999px;backdrop-filter:blur(2px);
}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.18em;
  color:var(--accent);margin-bottom:14px;
}
.section-title{font-size:clamp(26px,3.2vw,38px);}
.section-lead{margin-top:16px;color:var(--muted);max-width:60ch;}

/* ---------- 检索面板 ---------- */
.search-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow);
}
.search-label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:10px;}
.search-row{display:flex;gap:12px;flex-wrap:wrap;}
.field{flex:1 1 300px;}
.field input{
  width:100%;height:52px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;padding:0 16px;font-size:16px;
  transition:border-color var(--step) var(--ease),box-shadow var(--step) var(--ease);
}
.field input::placeholder{color:#9aa19d;}
.field input:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 4px rgba(15,76,68,.12);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;align-items:center;}
.tag-row .hint{font-size:13px;color:var(--muted);margin-right:4px;}
.tag{
  height:32px;padding:0 15px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:13px;color:var(--muted);cursor:pointer;
  transition:border-color var(--step) var(--ease),color var(--step) var(--ease),background var(--step) var(--ease);
}
.tag:hover{border-color:var(--ink);color:var(--ink);background:rgba(15,76,68,.05);}

/* ---------- 问答列表 ---------- */
.qa-list{display:flex;flex-direction:column;gap:14px;}
.qa-item{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform var(--step) var(--ease),border-color var(--step) var(--ease),box-shadow var(--step) var(--ease);
}
.qa-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--accent);opacity:0;transform:scaleY(.35);transform-origin:top;
  transition:opacity 240ms var(--ease),transform 240ms var(--ease);
}
.qa-item:hover{border-color:#d7d0c3;}
.qa-item.open{transform:translateX(2px);box-shadow:var(--shadow);}
.qa-item.open::before{opacity:1;transform:scaleY(1);}
.qa-q{
  display:flex;width:100%;align-items:flex-start;gap:16px;text-align:left;
  padding:22px 24px;background:none;border:0;cursor:pointer;font-size:18px;font-weight:600;
  line-height:1.55;color:var(--text);
}
.qa-mark{
  margin-left:auto;flex:none;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line);background:#fff;position:relative;
  transition:background var(--step) var(--ease),border-color var(--step) var(--ease);
}
.qa-mark::before,.qa-mark::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);
  transform:translate(-50%,-50%);transition:transform 240ms var(--ease),opacity 240ms var(--ease),background var(--step) var(--ease);
}
.qa-mark::before{width:11px;height:1.6px;}
.qa-mark::after{width:1.6px;height:11px;}
.qa-item.open .qa-mark{background:var(--ink);border-color:var(--ink);}
.qa-item.open .qa-mark::before{background:#fff;}
.qa-item.open .qa-mark::after{transform:translate(-50%,-50%) scaleY(0);opacity:0;}
.qa-a{
  max-height:0;overflow:hidden;padding:0 24px;color:var(--muted);font-size:16px;
  transition:max-height 260ms var(--ease),padding var(--step) var(--ease);
}
.qa-item.open .qa-a{max-height:480px;padding-bottom:24px;}
.qa-a p + p{margin-top:12px;}
.qa-empty{
  display:none;padding:26px 24px;border:1px dashed var(--line);border-radius:var(--r-card);
  color:var(--muted);font-size:15px;text-align:left;background:rgba(255,255,255,.6);
}
.qa-empty.show{display:block;}

/* ---------- 处理方式列表 ---------- */
.fix-list{border-top:1px solid var(--line);}
.fix-item{
  display:grid;grid-template-columns:110px 1fr;gap:32px;align-items:start;
  padding:30px 0;border-bottom:1px solid var(--line);
}
.fix-num{
  font-family:var(--mono);font-size:40px;line-height:1;color:var(--ink);opacity:.2;letter-spacing:-.03em;
}
.fix-body h3{font-size:20px;margin-bottom:10px;}
.fix-body p{color:var(--muted);font-size:16px;max-width:64ch;}

/* ---------- 账号保护建议 ---------- */
.protect-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:center;}
.protect-figure img{
  width:100%;aspect-ratio:16/12;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--shadow);
}
.tip-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line);}
.tip-list li{
  display:flex;gap:16px;padding:22px 0;border-bottom:1px solid var(--line);align-items:flex-start;
}
.tip-dot{
  flex:none;width:10px;height:10px;border-radius:50%;background:var(--accent);margin-top:11px;
}
.tip-list h3{font-size:19px;margin-bottom:6px;}
.tip-list p{color:var(--muted);font-size:16px;}

/* ---------- CTA 深色区 ---------- */
.cta-band{background:var(--deep);color:var(--inverse);padding:88px 0;}
.cta-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.cta-title{font-size:clamp(26px,3.2vw,36px);color:#fff;}
.cta-text{margin-top:18px;color:rgba(242,240,234,.72);max-width:52ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.cta-note{margin-top:18px;font-size:13px;color:rgba(242,240,234,.56);}
.cta-side{
  border:1px solid rgba(242,240,234,.18);border-radius:var(--r-card);padding:28px;
  background:rgba(255,255,255,.03);
}
.cta-side h3{font-size:17px;color:#fff;margin-bottom:16px;}
.cta-side li{
  display:flex;justify-content:space-between;gap:16px;padding:12px 0;
  border-bottom:1px solid rgba(242,240,234,.12);font-size:14px;color:rgba(242,240,234,.76);
}
.cta-side li:last-child{border-bottom:0;}
.cta-side li span:first-child{color:rgba(242,240,234,.5);}
.cta-side .mono{font-family:var(--mono);letter-spacing:.02em;}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:24px;}
.rel-card{
  display:flex;flex-direction:column;gap:12px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 24px;
  transition:transform var(--step) var(--ease),box-shadow var(--step) var(--ease),border-color var(--step) var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d7d0c3;}
.rel-card .badge{
  align-self:flex-start;font-size:12px;letter-spacing:.06em;color:var(--ink-2);
  background:rgba(15,76,68,.08);border-radius:999px;padding:5px 12px;
}
.rel-card h3{font-size:19px;}
.rel-card p{color:var(--muted);font-size:15px;}
.rel-more{margin-top:12px;font-size:14px;font-weight:600;color:var(--ink);display:inline-flex;gap:6px;align-items:center;}
.rel-more .arrow{transition:transform var(--step) var(--ease);}
.rel-card:hover .rel-more .arrow{transform:translateX(4px);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:rgba(242,240,234,.72);padding:72px 0 0;font-size:15px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-grid h4{font-size:15px;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer-about{margin-top:18px;font-size:14px;color:rgba(242,240,234,.58);max-width:28ch;}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-sub{color:rgba(242,240,234,.55);}
.site-footer .brand-mark{background:rgba(242,240,234,.12);}
.footer-links{display:flex;flex-direction:column;gap:12px;font-size:14px;}
.footer-links a,.footer-links li{color:rgba(242,240,234,.68);}
.footer-links a{
  border-bottom:1px solid transparent;transition:color var(--step) var(--ease),border-color var(--step) var(--ease);
  display:inline-block;
}
.footer-links a:hover{color:#fff;border-bottom-color:var(--accent);}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(242,240,234,.12);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(242,240,234,.5);
}
.to-top{color:rgba(242,240,234,.72);border-bottom:1px solid transparent;transition:color var(--step) var(--ease),border-color var(--step) var(--ease);}
.to-top:hover{color:#fff;border-bottom-color:var(--accent);}

/* ---------- 进入动效 ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
[data-reveal].is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-menu{gap:18px;}
  .nav-menu a{font-size:14px;}
}
@media (max-width:991px){
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .nav-side .btn-primary{display:none;}
  .page-head{padding:40px 0 56px;}
  .page-head-grid{grid-template-columns:1fr;gap:36px;}
  .page-figure{order:-1;}
  .protect-grid{grid-template-columns:1fr;gap:36px;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .rel-grid{grid-template-columns:1fr 1fr;}
  .rel-card:first-child{grid-column:1 / -1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .section{padding:72px 0;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .topbar-note{display:none;}
  .topbar-actions{margin-left:auto;gap:10px;}
  .brand-sub{display:none;}
  .navbar-inner{height:64px;gap:16px;}
  .navbar.is-scrolled .navbar-inner{height:58px;}
  .fix-item{grid-template-columns:1fr;gap:12px;padding:24px 0;}
  .fix-num{font-size:30px;}
  .qa-q{padding:18px 18px;font-size:16.5px;gap:12px;}
  .qa-a{padding:0 18px;}
  .qa-item.open .qa-a{padding-bottom:20px;}
  .search-panel{padding:20px;}
  .cta-band{padding:68px 0;}
  .rel-grid{grid-template-columns:1fr;}
  .rel-card:first-child{grid-column:auto;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .section{padding:60px 0;}
  .section-head{margin-bottom:32px;}
}
@media (max-width:575px){
  .cta-actions .btn{width:100%;}
  .search-row .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  [data-reveal]{opacity:1;transform:none;}
}