/* roulang page: index */
:root{
  --brand-900:#0B2822;
  --brand-700:#123A31;
  --brand-500:#1E5A4A;
  --accent-500:#C4693A;
  --accent-100:#F3E5DC;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --ink:#14161A;
  --muted:#6B6F6A;
  --line:#E3DFD7;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(20,22,26,.04), 0 14px 34px -18px rgba(20,22,26,.20);
  --shadow-soft:0 1px 2px rgba(20,22,26,.04);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::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:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px;}}
@media (min-width:1280px){.container{padding-left:0;padding-right:0;}}

.num{font-variant-numeric:tabular-nums;}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--brand-900);color:#F4F1EA;font-size:12.5px;line-height:1.6;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;padding-top:6px;padding-bottom:6px;}
.topbar-left{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.topbar-domain{color:#F4F1EA;letter-spacing:.02em;border-bottom:1px solid rgba(243,229,220,.4);}
.topbar-domain:hover{color:var(--accent-100);border-color:var(--accent-100);}
.topbar-note{color:rgba(244,241,234,.66);}
.topbar-right{display:flex;align-items:center;gap:18px;}
.topbar-link{color:rgba(244,241,234,.78);border-bottom:1px solid transparent;transition:color .22s var(--ease),border-color .22s var(--ease);}
.topbar-link:hover{color:var(--accent-100);border-color:var(--accent-100);}
.topbar-hide-sm{display:none;}
@media (min-width:768px){.topbar-hide-sm{display:inline;}}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(20,22,26,.55);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:74px;transition:height .22s var(--ease);}
.site-header.is-scrolled .header-inner{height:62px;}
.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:10px;background:var(--brand-700);color:#F4F1EA;
  display:grid;place-items:center;font-size:14px;font-weight:700;letter-spacing:.02em;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:none;align-items:center;gap:26px;}
@media (min-width:1024px){.main-nav{display:flex;}}
.nav-link{position:relative;font-size:15px;color:var(--ink);padding:6px 1px;transition:color .22s var(--ease);}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;
  background:var(--accent-500);transition:width .24s var(--ease);
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--brand-700);font-weight:600;}
.nav-link.is-active::after{width:100%;}
.header-actions{display:none;align-items:center;gap:18px;}
@media (min-width:1024px){.header-actions{display:flex;}}
.link-quiet{font-size:15px;color:var(--muted);border-bottom:1px solid transparent;transition:color .22s var(--ease),border-color .22s var(--ease);}
.link-quiet:hover{color:var(--brand-700);border-color:var(--accent-500);}
.menu-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;align-items:center;
  transition:border-color .22s var(--ease);
}
.menu-toggle:hover{border-color:var(--brand-500);}
.menu-toggle span{display:block;width:17px;height:1.6px;background:var(--ink);transition:transform .24s var(--ease),opacity .24s var(--ease);}
.menu-toggle.is-open span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){opacity:0;}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}
@media (min-width:1024px){.menu-toggle{display:none;}}

.drawer{
  position:fixed;inset:74px 0 0 0;z-index:55;background:var(--paper);
  border-top:1px solid var(--line);padding:24px 20px 40px;
  display:flex;flex-direction:column;gap:10px;
  transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line);}
.drawer-nav a{
  padding:16px 4px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-nav a::after{content:"→";color:var(--accent-500);font-size:14px;}
.drawer-nav a.is-active{color:var(--brand-700);font-weight:600;}
.drawer-cta{margin-top:22px;width:100%;justify-content:center;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .12s var(--ease);
}
.btn .arrow{transition:transform .22s var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--brand-700);color:#FFFFFF;}
.btn-primary:hover{background:var(--brand-500);}
.btn-ghost{background:#FFFFFF;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);}
.btn-light{background:#F4F1EA;color:var(--brand-900);}
.btn-light:hover{background:var(--accent-100);}
.btn-outline-light{background:transparent;border-color:rgba(244,241,234,.38);color:#F4F1EA;}
.btn-outline-light:hover{border-color:var(--accent-100);color:var(--accent-100);}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-700);border-bottom:1px solid var(--accent-500);padding-bottom:2px;transition:color .22s var(--ease);}
.btn-text:hover{color:var(--accent-500);}
.btn-text .arrow{transition:transform .22s var(--ease);}
.btn-text:hover .arrow{transform:translateX(4px);}

/* ============ 通用块 ============ */
.section{padding-top:56px;padding-bottom:56px;}
@media (min-width:768px){.section{padding-top:72px;padding-bottom:72px;}}
@media (min-width:1024px){.section{padding-top:96px;padding-bottom:96px;}}
.section-head{display:flex;flex-direction:column;gap:14px;margin-bottom:32px;}
@media (min-width:768px){.section-head{margin-bottom:40px;}}
.section-head.row{display:flex;flex-direction:column;gap:16px;}
@media (min-width:900px){
  .section-head.row{flex-direction:row;align-items:flex-end;justify-content:space-between;}
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--accent-500);font-weight:600;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent-500);display:block;}
h1{font-size:clamp(32px,4.2vw,56px);line-height:1.12;letter-spacing:-.02em;font-weight:700;}
h2{font-size:clamp(26px,2.6vw,36px);line-height:1.2;letter-spacing:-.01em;font-weight:700;}
h3{font-size:20px;line-height:1.35;font-weight:700;}
.lead{font-size:17px;line-height:1.85;color:var(--muted);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;background:var(--accent-100);color:var(--brand-700);
  font-size:12.5px;font-weight:600;line-height:1.5;white-space:nowrap;
}
.badge-dark{background:rgba(244,241,234,.12);color:#F4F1EA;border:1px solid rgba(244,241,234,.24);}
.divider{height:1px;background:var(--line);}

/* ============ Hero ============ */
.hero{position:relative;padding-top:52px;padding-bottom:56px;border-bottom:1px solid var(--line);overflow:hidden;}
@media (min-width:1024px){.hero{padding-top:84px;padding-bottom:96px;}}
.hero-grid{display:grid;gap:40px;}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;align-items:center;gap:56px;}}
.hero-copy{display:flex;flex-direction:column;gap:22px;max-width:640px;}
.hero-sub{font-size:17px;line-height:1.85;color:var(--muted);max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;}
.hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px;padding-top:24px;border-top:1px solid var(--line);}
.hero-metric{display:flex;flex-direction:column;gap:4px;padding-right:10px;border-right:1px solid var(--line);}
.hero-metric:last-child{border-right:0;}
.hero-metric strong{font-size:19px;font-weight:700;letter-spacing:-.01em;color:var(--brand-700);}
.hero-metric span{font-size:12.5px;color:var(--muted);line-height:1.5;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;
  border:1px solid var(--line);
}
.hero-visual::before{
  content:"";position:absolute;left:-12px;top:-12px;width:56px;height:56px;
  border-left:2px solid var(--accent-500);border-top:2px solid var(--accent-500);
}
.hero-visual-caption{
  position:absolute;left:16px;bottom:16px;right:16px;
  background:rgba(11,40,34,.78);color:#F4F1EA;border-radius:10px;
  padding:10px 14px;font-size:13px;line-height:1.6;
}

/* ============ 信任条 ============ */
.trust{background:var(--surface);border-bottom:1px solid var(--line);}
.trust-grid{display:grid;grid-template-columns:repeat(2,1fr);}
@media (min-width:768px){.trust-grid{grid-template-columns:repeat(4,1fr);}}
.trust-item{display:flex;gap:12px;padding:22px 20px;border-left:1px solid var(--line);}
.trust-item svg{flex-shrink:0;color:var(--brand-500);margin-top:4px;}
.trust-item strong{display:block;font-size:15px;font-weight:600;line-height:1.5;}
.trust-item span{display:block;font-size:13px;color:var(--muted);line-height:1.6;margin-top:2px;}
@media (max-width:767px){
  .trust-item:nth-child(odd){border-left:0;}
  .trust-item:nth-child(n+3){border-top:1px solid var(--line);}
}

/* ============ 价值主张 ============ */
.value-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-soft);
  display:grid;gap:32px;
}
@media (min-width:1024px){.value-card{grid-template-columns:1fr 1fr;gap:56px;padding:44px;}}
.value-left{display:flex;flex-direction:column;gap:18px;}
.value-list{display:flex;flex-direction:column;}
.value-list li{
  display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:start;
  padding:18px 0;border-top:1px solid var(--line);
}
.value-list li:first-child{border-top:0;padding-top:0;}
.value-list .idx{font-size:15px;font-weight:700;color:var(--accent-500);}
.value-list strong{font-size:16px;font-weight:600;}
.value-list p{font-size:14.5px;color:var(--muted);line-height:1.7;margin-top:4px;}

/* ============ 能力行 ============ */
.cap-list{border-top:1px solid var(--line);}
.cap-row{
  display:grid;gap:14px;padding:26px 18px;border-bottom:1px solid var(--line);
  transition:background-color .22s var(--ease),border-color .22s var(--ease);
}
@media (min-width:900px){.cap-row{grid-template-columns:64px 1fr 200px 34px;align-items:center;gap:24px;}}
.cap-row:hover{background:var(--surface);border-color:var(--brand-500);}
.cap-num{font-size:18px;font-weight:700;color:var(--accent-500);}
.cap-row h3{margin-bottom:6px;}
.cap-row p{font-size:14.5px;color:var(--muted);line-height:1.7;}
.cap-span{display:flex;justify-content:flex-start;}
@media (min-width:900px){.cap-span{justify-content:flex-end;}}
.cap-arrow{color:var(--accent-500);font-size:20px;line-height:1;transition:transform .22s var(--ease);}
.cap-row:hover .cap-arrow{transform:translateX(5px);}

/* ============ 场景交替 ============ */
.scene-row{display:grid;gap:28px;align-items:center;padding:32px 0;border-top:1px solid var(--line);}
.scene-row:first-child{border-top:0;}
@media (min-width:900px){.scene-row{grid-template-columns:1fr 1fr;gap:56px;padding:40px 0;}}
.scene-row img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;border:1px solid var(--line);}
@media (min-width:900px){
  .scene-row.reverse .scene-media{order:2;}
}
.scene-body{display:flex;flex-direction:column;gap:14px;}
.scene-body ul{display:flex;flex-direction:column;gap:10px;margin-top:4px;}
.scene-body li{position:relative;padding-left:20px;font-size:15px;color:var(--muted);line-height:1.7;}
.scene-body li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:1.6px;background:var(--accent-500);}

/* ============ 案例 ============ */
.case-list{border-top:1px solid var(--line);}
.case-row{
  display:grid;gap:12px;padding:26px 18px;border-bottom:1px solid var(--line);
  transition:background-color .22s var(--ease);
}
@media (min-width:900px){.case-row{grid-template-columns:64px 1fr 220px 30px;align-items:center;gap:24px;padding:28px 18px;}}
.case-row:hover{background:var(--surface);}
.case-row h3{font-size:18px;margin-bottom:6px;}
.case-row .case-note{font-size:14px;color:var(--muted);line-height:1.7;}
.case-arrow{color:var(--accent-500);font-size:20px;}
.stats-band{background:var(--brand-900);color:#F4F1EA;padding:40px 0;margin-top:40px;border-radius:var(--radius-card);}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
@media (min-width:768px){.stats-grid{grid-template-columns:repeat(4,1fr);}}
.stat{display:flex;flex-direction:column;gap:6px;padding-left:16px;border-left:1px solid rgba(244,241,234,.2);}
.stat strong{font-size:24px;font-weight:700;letter-spacing:-.01em;}
.stat span{font-size:13px;color:rgba(244,241,234,.72);line-height:1.6;}

/* ============ 价格 ============ */
.price-grid{display:grid;gap:22px;}
@media (min-width:1024px){.price-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.price-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px;display:flex;flex-direction:column;gap:20px;box-shadow:var(--shadow-soft);
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.price-card:hover{border-color:var(--brand-500);transform:translateY(-2px);box-shadow:var(--shadow-card);}
.price-card.featured{background:var(--brand-700);color:#F4F1EA;border-color:var(--brand-700);}
.price-card.featured .price-desc,.price-card.featured .price-unit{color:rgba(244,241,234,.76);}
.price-card.featured .price-list li{color:#F4F1EA;border-color:rgba(244,241,234,.16);}
.price-card.featured .price-list li::before{background:var(--accent-100);}
@media (max-width:1023px){.price-card.featured{order:-1;}}
.price-name{font-size:16px;font-weight:700;}
.price-desc{font-size:13.5px;color:var(--muted);line-height:1.6;}
.price-amount{display:flex;align-items:baseline;gap:8px;padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.price-card.featured .price-amount{border-color:rgba(244,241,234,.18);}
.price-amount strong{font-size:28px;font-weight:700;letter-spacing:-.02em;}
.price-unit{font-size:13px;color:var(--muted);}
.price-list{display:flex;flex-direction:column;gap:12px;}
.price-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--ink);line-height:1.65;padding-bottom:0;}
.price-list li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:5px;
  border-left:1.8px solid var(--brand-500);border-bottom:1.8px solid var(--brand-500);
  transform:rotate(-45deg);
}
.price-card.featured .price-list li::before{border-color:var(--accent-100);}

/* ============ 最新信息 ============ */
.news-grid{display:grid;gap:20px;}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card:hover{border-color:var(--brand-500);transform:translateY(-2px);box-shadow:var(--shadow-card);}
.news-link{display:flex;flex-direction:column;gap:12px;padding:26px;height:100%;}
.news-title{font-size:17px;font-weight:700;line-height:1.5;}
.news-sum{
  font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted);}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--surface);
  padding:48px 24px;text-align:center;color:var(--muted);font-size:15px;
}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;line-height:1.6;
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--brand-700);}
.faq-icon{
  flex-shrink:0;width:24px;height:24px;position:relative;
  transition:transform .26s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--accent-500);
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:1.8px;}
.faq-icon::after{width:1.8px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a p{padding:0 44px 24px 4px;font-size:15.5px;line-height:1.8;color:var(--muted);}

/* ============ 结尾 CTA ============ */
.cta-band{
  position:relative;background-color:var(--brand-900);color:#F4F1EA;overflow:hidden;
  border-radius:var(--radius-card);margin-bottom:64px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.24;
}
.cta-inner{position:relative;padding:48px 28px;display:flex;flex-direction:column;gap:24px;}
@media (min-width:900px){.cta-inner{padding:64px 56px;flex-direction:row;align-items:center;justify-content:space-between;}}
.cta-text{display:flex;flex-direction:column;gap:12px;max-width:600px;}
.cta-text h2{color:#F4F1EA;}
.cta-text p{color:rgba(244,241,234,.78);font-size:16px;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:#F4F1EA;padding-top:56px;}
.footer-top{
  display:flex;flex-direction:column;gap:12px;padding-bottom:28px;border-bottom:1px solid rgba(244,241,234,.14);
  font-size:13px;color:rgba(244,241,234,.72);
}
@media (min-width:768px){.footer-top{flex-direction:row;align-items:center;justify-content:space-between;}}
.footer-grid{display:grid;gap:32px;padding:40px 0;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;flex-direction:column;gap:16px;}
.footer-brand .brand-text{color:#F4F1EA;}
.footer-brand .brand-mark{background:rgba(244,241,234,.12);color:#F4F1EA;border:1px solid rgba(244,241,234,.2);}
.footer-brand p{font-size:14px;color:rgba(244,241,234,.72);line-height:1.8;max-width:300px;}
.footer-col h3{font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:16px;color:#F4F1EA;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a,.footer-col span{font-size:14px;color:rgba(244,241,234,.72);transition:color .22s var(--ease);}
.footer-col a:hover{color:var(--accent-100);}
.footer-bottom{
  display:flex;flex-direction:column;gap:10px;
  padding:22px 0 28px;border-top:1px solid rgba(244,241,234,.14);
  font-size:13px;color:rgba(244,241,234,.62);
}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}}
.footer-bottom a{color:rgba(244,241,234,.8);border-bottom:1px solid rgba(244,241,234,.3);}
.footer-bottom a:hover{color:var(--accent-100);border-color:var(--accent-100);}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1 !important;transform:none !important;}
}

/* roulang page: article */
:root{
  --brand-900:#0B2822;
  --brand-700:#123A31;
  --brand-500:#1E5A4A;
  --accent-500:#C4693A;
  --accent-100:#F3E5DC;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --ink:#14161A;
  --muted:#6B6F6A;
  --line:#E3DFD7;
  --dark-text:#F4F1EA;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(20,22,26,.04), 0 14px 34px -18px rgba(20,22,26,.20);
  --shadow-soft:0 1px 2px rgba(20,22,26,.04);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.site{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.site img{max-width:100%;height:auto;display:block;}
body.site a{color:inherit;text-decoration:none;}
body.site button{font-family:inherit;}
body.site input,body.site select,body.site textarea{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}
@media (min-width:1280px){.container{padding:0 32px;}}

.num{font-variant-numeric:tabular-nums;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--brand-500);font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-500);display:inline-block;}
.h2{font-size:clamp(26px,2.6vw,36px);line-height:1.2;letter-spacing:-.01em;font-weight:700;color:var(--brand-700);}
.h3{font-size:21px;line-height:1.35;font-weight:700;color:var(--brand-700);}
.lead{font-size:17px;color:var(--muted);line-height:1.85;}

/* ---------- topbar ---------- */
.topbar{background:var(--brand-900);color:rgba(244,241,234,.82);font-size:12.5px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;}
.topbar-left{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.topbar-left .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-500);display:inline-block;margin-right:7px;vertical-align:middle;}
.topbar-right{display:flex;align-items:center;gap:18px;}
.topbar a{color:rgba(244,241,234,.82);border-bottom:1px solid transparent;transition:color var(--ease) 220ms,border-color var(--ease) 220ms;}
.topbar a:hover{color:var(--accent-100);border-bottom-color:var(--accent-100);}
@media (max-width:640px){.topbar-right a:last-child{display:none;}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);backdrop-filter:saturate(150%) blur(6px);
  transition:box-shadow var(--ease) 220ms;
}
.site-header.is-scrolled{box-shadow:0 1px 2px rgba(20,22,26,.04),0 12px 28px -22px rgba(20,22,26,.35);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:74px;transition:min-height var(--ease) 220ms;}
.site-header.is-scrolled .header-inner{min-height:62px;}
.brand{display:inline-flex;align-items:center;gap:11px;}
.brand-mark{
  width:38px;height:38px;border-radius:9px;background:var(--brand-700);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;letter-spacing:.02em;
  flex:0 0 auto;
}
.brand-text{font-size:17px;font-weight:700;color:var(--brand-900);letter-spacing:-.01em;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;padding:9px 12px;font-size:15px;color:var(--ink);border-radius:8px;
  transition:color var(--ease) 220ms;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;background:var(--accent-500);
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease) 220ms;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-700);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:16px;}
.link-quiet{font-size:15px;color:var(--muted);border-bottom:1px solid transparent;transition:color var(--ease) 220ms,border-color var(--ease) 220ms;}
.link-quiet:hover{color:var(--brand-700);border-bottom-color:var(--accent-500);}
.nav-toggle{
  display:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:9px 12px;font-size:14px;color:var(--ink);align-items:center;gap:8px;
}
.nav-toggle:hover{border-color:var(--brand-500);color:var(--brand-700);}
.nav-toggle .bars{display:inline-flex;flex-direction:column;gap:3px;}
.nav-toggle .bars i{display:block;width:15px;height:1.5px;background:currentColor;border-radius:2px;}
@media (max-width:1023px){
  .main-nav,.header-actions .link-quiet{display:none;}
  .nav-toggle{display:inline-flex;}
}
.drawer{
  display:none;position:fixed;left:0;right:0;top:112px;bottom:0;z-index:55;
  background:var(--paper);border-top:1px solid var(--line);padding:20px;overflow-y:auto;
}
body.drawer-open .drawer{display:block;}
body.drawer-open{overflow:hidden;}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;padding:16px 4px;font-size:17px;
  border-bottom:1px solid var(--line);color:var(--ink);
}
.drawer a.drawer-link.is-active{color:var(--brand-700);font-weight:600;}
.drawer .btn{width:100%;justify-content:center;margin-top:22px;}
@media (min-width:1024px){.drawer{display:none !important;}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;
  transition:background-color var(--ease) 220ms,color var(--ease) 220ms,border-color var(--ease) 220ms,transform var(--ease) 220ms;
}
.btn .arw{transition:transform var(--ease) 220ms;}
.btn:hover .arw{transform:translateX(4px);}
.btn-primary{background:var(--brand-700);color:#fff;}
.btn-primary:hover{background:var(--brand-900);}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);}
.btn:active{transform:translateY(1px);}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:none;box-shadow:0 0 0 2px var(--surface),0 0 0 4px var(--brand-500);}

/* ---------- breadcrumb ---------- */
.crumb{font-size:13px;color:var(--muted);padding:22px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--line);}
.crumb a:hover{color:var(--brand-700);border-bottom:1px solid var(--accent-500);}
.crumb .current{color:var(--ink);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- article head ---------- */
.article-head{padding:26px 0 34px;border-bottom:1px solid var(--line);}
.article-head .wrap{max-width:800px;margin:0 auto;}
.badge{
  display:inline-flex;align-items:center;gap:6px;background:var(--accent-100);color:var(--brand-700);
  border-radius:999px;padding:5px 13px;font-size:13px;font-weight:600;
}
.article-title{
  font-size:clamp(26px,3.4vw,42px);line-height:1.2;letter-spacing:-.02em;font-weight:700;
  color:var(--brand-900);margin-top:18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13.5px;color:var(--muted);}
.article-meta .sep{width:4px;height:4px;border-radius:50%;background:var(--line);}
.article-meta a{color:var(--brand-500);border-bottom:1px dashed rgba(30,90,74,.45);}

/* ---------- article body layout ---------- */
.article-wrap{padding:44px 0 72px;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;}
@media (min-width:1024px){
  .article-grid{grid-template-columns:minmax(0,760px) 260px;justify-content:center;gap:56px;}
}
.article-body{font-size:17px;line-height:1.9;color:var(--ink);max-width:760px;}
.article-body > * + *{margin-top:1.2em;}
.article-body h2{font-size:24px;line-height:1.35;font-weight:700;color:var(--brand-700);margin-top:2.2em;}
.article-body h3{font-size:20px;line-height:1.4;font-weight:700;color:var(--brand-700);margin-top:1.8em;}
.article-body p{color:var(--ink);}
.article-body a{color:var(--brand-500);border-bottom:1px dashed rgba(30,90,74,.5);}
.article-body a:hover{color:var(--accent-500);border-bottom-color:var(--accent-500);}
.article-body ul,.article-body ol{padding-left:1.25em;}
.article-body ul li{position:relative;padding-left:14px;margin-top:.55em;}
.article-body ul li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--accent-500);}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-top:.55em;padding-left:4px;}
.article-body blockquote{
  border-left:3px solid var(--accent-500);background:var(--surface);border-radius:0 var(--radius-card) var(--radius-card) 0;
  padding:18px 22px;color:var(--muted);font-size:16px;
}
.article-body img{border-radius:var(--radius-img);margin:1.6em auto;box-shadow:var(--shadow-soft);}
.article-body figure figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;font-size:15.5px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-body th{background:rgba(18,58,49,.06);color:var(--brand-700);font-weight:600;}
.article-body code{background:rgba(18,58,49,.07);padding:2px 6px;border-radius:6px;font-size:15px;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

.empty-state{
  border:1px solid var(--line);background:var(--surface);border-radius:var(--radius-card);
  padding:52px 28px;text-align:center;box-shadow:var(--shadow-soft);
}
.empty-state .mark{
  width:46px;height:46px;border-radius:12px;background:var(--accent-100);color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;margin-bottom:16px;
}
.empty-state p{color:var(--muted);}
.empty-state .btn{margin-top:20px;}

/* ---------- sidebar ---------- */
.side{display:flex;flex-direction:column;gap:20px;}
@media (max-width:1023px){.side{display:none;}}
.side-card{
  border:1px solid var(--line);background:var(--surface);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-soft);
}
.side-card h3{font-size:16px;font-weight:700;color:var(--brand-700);margin-bottom:14px;}
.side-card ul li+li{margin-top:12px;}
.side-card ul a{font-size:14.5px;color:var(--ink);display:flex;gap:8px;align-items:flex-start;line-height:1.6;}
.side-card ul a:hover{color:var(--brand-500);}
.side-card ul a span.idx{color:var(--accent-500);font-weight:700;font-variant-numeric:tabular-nums;}
.side-dark{background:var(--brand-900);border-color:rgba(244,241,234,.14);box-shadow:none;}
.side-dark h3{color:var(--dark-text);}
.side-dark p{font-size:14px;color:rgba(244,241,234,.78);line-height:1.8;}
.side-dark a{display:inline-block;margin-top:14px;font-size:14px;color:var(--accent-100);border-bottom:1px solid rgba(243,229,220,.5);}

/* ---------- post-foot tags ---------- */
.post-foot{margin-top:44px;border-top:1px solid var(--line);padding-top:24px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;padding:6px 13px;border-radius:999px;font-size:13px;
  background:var(--surface);border:1px solid var(--line);color:var(--brand-700);
  transition:border-color var(--ease) 220ms,color var(--ease) 220ms;
}
.tag:hover{border-color:var(--brand-500);color:var(--brand-900);}
.post-nav{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-top:22px;font-size:14.5px;}
.post-nav a{color:var(--muted);border-bottom:1px solid transparent;transition:color var(--ease) 220ms,border-color var(--ease) 220ms;}
.post-nav a:hover{color:var(--brand-700);border-bottom-color:var(--accent-500);}

/* ---------- related ---------- */
.related{padding:64px 0 8px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:30px;}
.section-head .more{font-size:14.5px;color:var(--brand-500);border-bottom:1px solid rgba(30,90,74,.4);}
.section-head .more:hover{color:var(--accent-500);border-bottom-color:var(--accent-500);}
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.rel-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-soft);
  transition:transform var(--ease) 220ms,border-color var(--ease) 220ms,box-shadow var(--ease) 220ms;
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--shadow-card);}
.rel-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--paper);}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.rel-card:hover .thumb img{transform:scale(1.03);}
.rel-card .body{padding:18px 20px 22px;}
.rel-card .body h3{font-size:17px;font-weight:700;color:var(--brand-700);line-height:1.45;}
.rel-card .body p{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.7;}
.rel-card .meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);margin-top:14px;}
.rel-card .meta .chip{background:var(--accent-100);color:var(--brand-700);border-radius:999px;padding:2px 10px;font-weight:600;}

/* ---------- cta band ---------- */
.cta-band{
  margin-top:72px;position:relative;background:var(--brand-900) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:var(--dark-text);border-radius:var(--radius-card);overflow:hidden;
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(11,40,34,.86);}
.cta-band .inner{position:relative;padding:48px 32px;display:flex;gap:28px;flex-wrap:wrap;align-items:center;justify-content:space-between;}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.01em;max-width:620px;}
.cta-band p{font-size:15px;color:rgba(244,241,234,.8);margin-top:10px;max-width:620px;}
.cta-band .actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ghost{background:transparent;color:var(--dark-text);border-color:rgba(244,241,234,.35);}
.cta-band .btn-ghost:hover{background:rgba(244,241,234,.1);border-color:var(--accent-100);color:var(--accent-100);}

/* ---------- footer ---------- */
.site-footer{margin-top:88px;background:var(--brand-900);color:rgba(244,241,234,.78);}
.footer-top{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  padding:20px 0;font-size:13.5px;border-bottom:1px solid rgba(244,241,234,.14);
}
.footer-top a{color:var(--accent-100);border-bottom:1px solid rgba(243,229,220,.4);}
.footer-top a:hover{color:#fff;border-bottom-color:#fff;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:44px 0;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px;}}
.footer-brand .brand-text{color:var(--dark-text);}
.footer-brand .brand-mark{background:rgba(244,241,234,.12);border:1px solid rgba(244,241,234,.18);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(244,241,234,.72);max-width:340px;}
.footer-col h3{font-size:15px;color:var(--dark-text);font-weight:700;margin-bottom:16px;}
.footer-col ul li+li{margin-top:11px;}
.footer-col a,.footer-col span{font-size:14px;color:rgba(244,241,234,.72);}
.footer-col a{border-bottom:1px solid transparent;transition:color var(--ease) 220ms,border-color var(--ease) 220ms;}
.footer-col a:hover{color:var(--accent-100);border-bottom-color:var(--accent-100);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding:18px 0 26px;border-top:1px solid rgba(244,241,234,.14);font-size:13px;color:rgba(244,241,234,.6);
}
.footer-bottom a{color:rgba(244,241,234,.72);border-bottom:1px solid transparent;}
.footer-bottom a:hover{color:var(--accent-100);border-bottom-color:var(--accent-100);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);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;}
}

/* roulang page: category1 */
:root{
    --brand-900:#0B2822;
    --brand-700:#123A31;
    --brand-500:#1E5A4A;
    --accent-500:#C4693A;
    --accent-100:#F3E5DC;
    --paper:#F6F4EF;
    --surface:#FFFFFF;
    --ink:#14161A;
    --muted:#6B6F6A;
    --line:#E3DFD7;
    --dark-text:#F4F1EA;
    --radius-card:14px;
    --radius-btn:10px;
    --radius-img:12px;
    --shadow-soft:0 1px 2px rgba(20,22,26,.04), 0 14px 34px -18px rgba(20,22,26,.20);
    --ease:220ms cubic-bezier(.2,.7,.3,1);
  }

  *,*::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:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  h1,h2,h3{letter-spacing:-0.01em;color:var(--brand-700);}
  .num{font-variant-numeric:tabular-nums;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){ .container{padding-left:32px;padding-right:32px;} }

  :focus-visible{
    outline:2px solid var(--brand-500);
    outline-offset:2px;
    border-radius:4px;
  }

  /* ---------- 顶部信息条 ---------- */
  .topbar{
    background:var(--brand-900);
    color:var(--dark-text);
    font-size:12.5px;
    line-height:1.6;
  }
  .topbar-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    min-height:38px;
    padding-top:6px;
    padding-bottom:6px;
  }
  .topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
  .topbar-domain{
    font-weight:600;
    letter-spacing:.02em;
    border-bottom:1px solid rgba(244,241,234,.35);
    padding-bottom:1px;
    transition:color var(--ease),border-color var(--ease);
  }
  .topbar-domain:hover{color:var(--accent-100);border-color:var(--accent-100);}
  .topbar-tip{opacity:.72;}
  .topbar-right{display:flex;align-items:center;gap:18px;}
  .topbar-right a{
    opacity:.82;
    border-bottom:1px solid rgba(244,241,234,.28);
    padding-bottom:1px;
    transition:color var(--ease),opacity var(--ease),border-color var(--ease);
  }
  .topbar-right a:hover{color:var(--accent-100);opacity:1;border-color:var(--accent-100);}
  @media (max-width:767px){
    .topbar-tip{display:none;}
    .topbar-right a:last-child{display:none;}
  }

  /* ---------- 主导航 ---------- */
  .site-header{position:sticky;top:0;z-index:60;}
  .navwrap{
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
    transition:box-shadow var(--ease);
  }
  .site-header.is-scrolled .navwrap{
    box-shadow:0 1px 2px rgba(20,22,26,.04), 0 12px 28px -22px rgba(20,22,26,.35);
  }
  .nav-inner{
    display:flex;
    align-items:center;
    gap:28px;
    min-height:72px;
    transition:min-height var(--ease);
  }
  .site-header.is-scrolled .nav-inner{min-height:62px;}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    width:36px;height:36px;
    display:grid;place-items:center;
    background:var(--brand-700);
    color:#F7F5F0;
    font-size:13px;
    font-weight:700;
    letter-spacing:.04em;
    border-radius:9px;
  }
  .brand-text{
    font-size:17px;
    font-weight:700;
    color:var(--brand-700);
    letter-spacing:-.01em;
    white-space:nowrap;
  }
  .main-nav{
    display:flex;
    align-items:center;
    gap:4px;
    flex:1 1 auto;
    min-width:0;
  }
  .nav-link{
    position:relative;
    display:inline-block;
    padding:8px 12px;
    font-size:15px;
    color:#3D4341;
    white-space:nowrap;
    transition:color var(--ease);
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:12px;right:12px;bottom:2px;
    height:2px;
    background:var(--accent-500);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform var(--ease);
  }
  .nav-link:hover{color:var(--brand-700);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--brand-700);font-weight:600;}
  .nav-link.is-active::after{transform:scaleX(1);}
  .nav-actions{display:flex;align-items:center;gap:16px;flex-shrink:0;}

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:0 20px;
    min-height:44px;
    font-size:15px;
    font-weight:600;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  }
  .btn:active{transform:translateY(1px);}
  .btn-primary{background:var(--brand-700);color:#FFFFFF;border-color:var(--brand-700);}
  .btn-primary:hover{background:var(--brand-900);border-color:var(--brand-900);}
  .btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line);}
  .btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);}
  .btn-block{width:100%;}
  .btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
  .btn .arrow{transition:transform var(--ease);}
  .btn:hover .arrow{transform:translateX(4px);}
  .btn-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:15px;
    color:var(--ink);
    border-bottom:1px solid var(--accent-500);
    padding-bottom:2px;
    transition:color var(--ease),border-color var(--ease);
  }
  .btn-link:hover{color:var(--accent-500);}
  .btn-link .arrow{transition:transform var(--ease);}
  .btn-link:hover .arrow{transform:translateX(4px);}

  .nav-toggle{
    display:none;
    width:44px;height:44px;
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    background:var(--surface);
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:5px;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-700);transition:transform var(--ease),opacity var(--ease);}
  .nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle.is-open span:nth-child(2){opacity:0;}
  .nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

  .nav-drawer{
    display:none;
    border-top:1px solid var(--line);
    background:var(--surface);
    padding:12px 0 20px;
  }
  .nav-drawer.is-open{display:block;}
  .drawer-links{display:flex;flex-direction:column;}
  .drawer-links a{
    padding:14px 0;
    font-size:16px;
    color:var(--ink);
    border-bottom:1px solid var(--line);
  }
  .drawer-links a.is-active{color:var(--brand-700);font-weight:600;}
  .drawer-cta{margin-top:18px;}

  @media (max-width:1023px){
    .main-nav,.nav-actions{display:none;}
    .nav-toggle{display:flex;}
    .nav-inner{justify-content:space-between;min-height:64px;}
  }

  /* ---------- 通用区块 ---------- */
  .section{padding:56px 0;}
  .section-paper{background:var(--paper);}
  .section-surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  @media (min-width:768px){ .section{padding:72px 0;} }
  @media (min-width:1024px){ .section{padding:96px 0;} }

  .section-head{max-width:760px;margin-bottom:28px;}
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:600;
    color:var(--accent-500);
    letter-spacing:.06em;
    margin-bottom:14px;
  }
  .eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-500);display:block;}
  .section-title{
    font-size:clamp(26px,2.6vw,36px);
    line-height:1.2;
    font-weight:700;
    color:var(--brand-700);
  }
  .section-desc{
    margin-top:16px;
    font-size:16px;
    color:var(--muted);
    line-height:1.85;
  }
  @media (min-width:768px){ .section-head{margin-bottom:36px;} }

  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:5px 12px;
    border-radius:999px;
    background:var(--accent-100);
    color:var(--brand-700);
    font-size:12.5px;
    font-weight:600;
    line-height:1.5;
  }
  .badge-plain{
    background:transparent;
    border:1px solid var(--line);
    color:var(--muted);
    font-weight:500;
  }
  .badge-dark{
    background:transparent;
    border:1px solid rgba(244,241,234,.28);
    color:var(--accent-100);
  }

  /* ---------- Hero 窄版 ---------- */
  .hero-narrow{
    position:relative;
    background-color:var(--paper);
    background-image:
      linear-gradient(rgba(227,223,215,.65) 1px, transparent 1px),
      linear-gradient(90deg, rgba(227,223,215,.65) 1px, transparent 1px);
    background-size:64px 64px, 64px 64px;
    background-position:-1px -1px;
    border-bottom:1px solid var(--line);
    padding:44px 0 52px;
    overflow:hidden;
  }
  .hero-narrow::after{
    content:"";
    position:absolute;inset:auto 0 0 0;
    height:1px;background:var(--line);
  }
  .hero-inner{
    display:grid;
    grid-template-columns:1fr;
    gap:32px;
    align-items:center;
    position:relative;
    z-index:1;
  }
  .breadcrumb{
    font-size:13px;
    color:var(--muted);
    margin-bottom:18px;
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    align-items:center;
  }
  .breadcrumb a{transition:color var(--ease);}
  .breadcrumb a:hover{color:var(--brand-500);}
  .breadcrumb .sep{opacity:.55;}
  .breadcrumb .current{color:var(--ink);}
  .hero-title{
    font-size:clamp(30px,4.2vw,50px);
    line-height:1.14;
    font-weight:700;
    letter-spacing:-.02em;
    color:var(--brand-700);
    margin-top:16px;
  }
  .hero-sub{
    margin-top:18px;
    font-size:17px;
    line-height:1.8;
    color:#3D4341;
    max-width:560px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .hero-points{
    margin-top:30px;
    display:grid;
    gap:12px;
    max-width:560px;
  }
  .hero-points li{
    display:flex;
    align-items:flex-start;
    gap:10px;
    font-size:14.5px;
    color:var(--muted);
    line-height:1.7;
  }
  .dot{
    flex:0 0 auto;
    width:7px;height:7px;
    margin-top:10px;
    border-radius:50%;
    background:var(--accent-500);
  }
  .hero-media{
    position:relative;
    margin:0;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-soft);
    overflow:hidden;
  }
  .hero-media img{
    width:100%;
    aspect-ratio:16/11;
    object-fit:cover;
  }
  .hero-media figcaption{
    padding:14px 18px;
    font-size:13px;
    color:var(--muted);
    border-top:1px solid var(--line);
    background:var(--surface);
  }
  .hero-media::before{
    content:"";
    position:absolute;
    left:0;top:24px;
    width:3px;height:44px;
    background:var(--accent-500);
    z-index:2;
  }
  @media (min-width:900px){
    .hero-inner{grid-template-columns:1.05fr 1fr;gap:56px;}
    .hero-narrow{padding:64px 0 72px;}
  }

  /* ---------- 能力网格 ---------- */
  .cap-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:16px;
  }
  @media (min-width:640px){ .cap-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;} }
  @media (min-width:1024px){ .cap-grid{gap:24px;} }

  .cap-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:24px;
    box-shadow:0 1px 2px rgba(20,22,26,.03);
    transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
  }
  .cap-card:hover{
    transform:translateY(-2px);
    border-color:var(--brand-500);
    box-shadow:var(--shadow-soft);
  }
  .cap-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
  .cap-icon{
    flex:0 0 auto;
    width:40px;height:40px;
    display:grid;place-items:center;
    border:1px solid var(--line);
    border-radius:10px;
    background:var(--paper);
    color:var(--brand-500);
  }
  .cap-icon svg{width:20px;height:20px;}
  .cap-name{font-size:18px;font-weight:700;color:var(--brand-700);line-height:1.4;}
  .cap-text{font-size:14.5px;color:var(--muted);line-height:1.8;}
  .cap-link{
    margin-top:16px;
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:600;
    color:var(--brand-500);
    transition:color var(--ease);
  }
  .cap-link .arrow{transition:transform var(--ease);}
  .cap-card:hover .cap-link{color:var(--accent-500);}
  .cap-card:hover .cap-link .arrow{transform:translateX(4px);}

  /* ---------- 能力对照行 ---------- */
  .map-list{
    border-top:1px solid var(--line);
  }
  .map-row{
    display:grid;
    grid-template-columns:1fr;
    gap:10px;
    padding:22px 0;
    border-bottom:1px solid var(--line);
    transition:background-color var(--ease);
  }
  .map-row:hover{background:rgba(243,229,220,.35);}
  .map-name{
    font-size:17px;
    font-weight:700;
    color:var(--brand-700);
  }
  .map-desc{font-size:14.5px;color:var(--muted);line-height:1.8;}
  .map-tags{display:flex;flex-wrap:wrap;gap:8px;}
  @media (min-width:900px){
    .map-row{
      grid-template-columns:220px 1fr 260px;
      align-items:center;
      gap:28px;
      padding:24px 16px;
      margin:0 -16px;
      border-radius:10px;
    }
    .map-tags{justify-content:flex-end;}
  }

  /* ---------- 流程与指标 ---------- */
  .flow-wrap{
    display:grid;
    grid-template-columns:1fr;
    gap:28px;
  }
  @media (min-width:1024px){ .flow-wrap{grid-template-columns:1fr 1fr;gap:56px;align-items:start;} }

  .flow-list{display:grid;gap:18px;}
  .flow-item{
    display:grid;
    grid-template-columns:auto 1fr;
    gap:16px;
    padding:20px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    transition:border-color var(--ease),transform var(--ease);
  }
  .flow-item:hover{border-color:var(--brand-500);transform:translateY(-2px);}
  .flow-num{
    font-size:20px;
    font-weight:700;
    color:var(--accent-500);
    line-height:1.3;
    font-variant-numeric:tabular-nums;
  }
  .flow-name{font-size:16.5px;font-weight:700;color:var(--brand-700);}
  .flow-text{margin-top:6px;font-size:14.5px;color:var(--muted);line-height:1.8;}

  .metrics{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    background:var(--surface);
    overflow:hidden;
  }
  .metric{
    padding:22px 20px;
    border-bottom:1px solid var(--line);
    border-right:1px solid var(--line);
  }
  .metric-value{
    font-size:clamp(26px,3vw,34px);
    font-weight:700;
    color:var(--brand-700);
    line-height:1.2;
    font-variant-numeric:tabular-nums;
  }
  .metric-value small{font-size:15px;font-weight:600;margin-left:2px;color:var(--brand-500);}
  .metric-label{margin-top:6px;font-size:13.5px;color:var(--muted);}
  .metric:nth-child(2n){border-right:0;}
  .metric:nth-last-child(-n+2){border-bottom:0;}
  @media (min-width:640px){
    .metrics{grid-template-columns:repeat(2,minmax(0,1fr));}
  }
  .metrics-note{
    margin-top:16px;
    font-size:13.5px;
    color:var(--muted);
    border-left:3px solid var(--accent-500);
    padding-left:14px;
    line-height:1.8;
  }

  /* ---------- FAQ ---------- */
  .faq-list{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:20px 4px;
    min-height:56px;
    text-align:left;
    font-size:17px;
    font-weight:600;
    color:var(--brand-700);
    transition:color var(--ease);
  }
  .faq-q:hover{color:var(--accent-500);}
  .faq-mark{
    position:relative;
    flex:0 0 auto;
    width:22px;height:22px;
  }
  .faq-mark::before,
  .faq-mark::after{
    content:"";
    position:absolute;
    left:50%;top:50%;
    background:var(--brand-500);
    transform:translate(-50%,-50%);
    transition:transform var(--ease),background-color var(--ease);
  }
  .faq-mark::before{width:14px;height:2px;}
  .faq-mark::after{width:2px;height:14px;}
  .faq-item.is-open .faq-mark::before{background:var(--accent-500);}
  .faq-item.is-open .faq-mark::after{transform:translate(-50%,-50%) rotate(45deg);background:var(--accent-500);}
  .faq-a{
    overflow:hidden;
    max-height:0;
    transition:max-height 260ms cubic-bezier(.2,.7,.3,1);
  }
  .faq-a-inner{
    padding:0 4px 22px;
    font-size:15.5px;
    color:var(--muted);
    line-height:1.85;
    max-width:860px;
  }

  /* ---------- 窄 CTA ---------- */
  .cta-narrow{
    position:relative;
    background:var(--brand-900);
    color:var(--dark-text);
    border-radius:var(--radius-card);
    overflow:hidden;
    padding:40px 28px;
  }
  .cta-narrow::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-3.png');
    background-size:cover;
    background-position:center;
    opacity:.22;
  }
  .cta-inner{
    position:relative;
    z-index:1;
    display:grid;
    gap:22px;
    align-items:center;
  }
  .cta-title{
    font-size:clamp(22px,2.4vw,30px);
    font-weight:700;
    color:#F4F1EA;
    line-height:1.3;
  }
  .cta-desc{margin-top:10px;font-size:15px;color:rgba(244,241,234,.78);line-height:1.8;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
  .cta-actions .btn-primary{background:var(--accent-500);border-color:var(--accent-500);color:#FFFFFF;}
  .cta-actions .btn-primary:hover{background:#B25C31;border-color:#B25C31;}
  .cta-actions .btn-ghost{background:transparent;border-color:rgba(244,241,234,.35);color:#F4F1EA;}
  .cta-actions .btn-ghost:hover{border-color:var(--accent-100);color:var(--accent-100);}
  @media (min-width:900px){
    .cta-narrow{padding:48px 44px;}
    .cta-inner{grid-template-columns:1.4fr 1fr;gap:40px;}
    .cta-actions{justify-content:flex-end;}
  }

  .cta-space{padding-bottom:64px;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--brand-900);
    color:var(--dark-text);
    font-size:14px;
    padding:0 0 28px;
  }
  .footer-top{
    display:flex;
    flex-wrap:wrap;
    gap:10px 24px;
    align-items:center;
    justify-content:space-between;
    padding:20px 0;
    border-bottom:1px solid rgba(244,241,234,.14);
    font-size:13.5px;
    color:rgba(244,241,234,.75);
  }
  .footer-top a{
    color:var(--accent-100);
    border-bottom:1px solid rgba(243,229,220,.45);
    padding-bottom:1px;
    transition:color var(--ease),border-color var(--ease);
  }
  .footer-top a:hover{color:#FFFFFF;border-color:#FFFFFF;}
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:28px;
    padding:36px 0 28px;
  }
  @media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;} }
  .footer-brand .brand-mark{background:#F4F1EA;color:var(--brand-900);}
  .footer-brand .brand-text{color:#F4F1EA;}
  .footer-brand p{
    margin-top:16px;
    font-size:13.5px;
    color:rgba(244,241,234,.72);
    line-height:1.85;
    max-width:340px;
  }
  .footer-col h3{
    font-size:14px;
    font-weight:700;
    color:#F4F1EA;
    letter-spacing:.04em;
    margin-bottom:14px;
  }
  .footer-col ul{display:grid;gap:10px;}
  .footer-col li{font-size:13.5px;color:rgba(244,241,234,.72);}
  .footer-col a{transition:color var(--ease);}
  .footer-col a:hover{color:var(--accent-100);}
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    gap:8px 20px;
    justify-content:space-between;
    padding-top:20px;
    border-top:1px solid rgba(244,241,234,.14);
    font-size:12.5px;
    color:rgba(244,241,234,.62);
  }
  .footer-bottom a{color:rgba(244,241,234,.82);transition:color var(--ease);}
  .footer-bottom a:hover{color:var(--accent-100);}

  /* ---------- 入场动效 ---------- */
  .js .reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms cubic-bezier(.2,.7,.3,1),transform 520ms cubic-bezier(.2,.7,.3,1);}
  .js .reveal.is-visible{opacity:1;transform:none;}

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

/* roulang page: category2 */
:root{
  --brand-900:#0B2822;
  --brand-700:#123A31;
  --brand-500:#1E5A4A;
  --accent-500:#C4693A;
  --accent-100:#F3E5DC;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --ink:#14161A;
  --muted:#6B6F6A;
  --line:#E3DFD7;
  --cream:#F4F1EA;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(20,22,26,.04), 0 14px 34px -18px rgba(20,22,26,.20);
  --ease:cubic-bezier(.2,.7,.3,1);
  --section-y:96px;
}
@media (max-width:1023px){ :root{ --section-y:72px; } }
@media (max-width:639px){ :root{ --section-y:56px; } }

*,*::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:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{ margin:0; font-weight:700; line-height:1.25; letter-spacing:-.01em; }
h1{ font-size:clamp(32px,4.2vw,54px); line-height:1.14; letter-spacing:-.02em; }
h2{ font-size:clamp(26px,2.6vw,36px); line-height:1.22; }
h3{ font-size:21px; line-height:1.4; }
p{ margin:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
a{ color:inherit; text-decoration:none; transition:color 220ms var(--ease); }
img{ display:block; max-width:100%; height:auto; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
:focus-visible{ outline:2px solid var(--brand-500); outline-offset:2px; border-radius:4px; }

.container{ width:100%; max-width:1200px; margin:0 auto; padding:0 20px; }
@media (min-width:768px){ .container{ padding:0 32px; } }
@media (min-width:1280px){ .container{ padding:0; } }

/* ---------- 顶部信息条 ---------- */
.topbar{ background:var(--brand-900); color:rgba(244,241,234,.78); font-size:12.5px; line-height:1.6; }
.topbar-inner{ display:flex; align-items:center; justify-content:space-between; gap:16px; min-height:38px; padding-top:6px; padding-bottom:6px; }
.topbar-left{ display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
.topbar-domain{ color:var(--accent-100); border-bottom:1px solid rgba(243,229,220,.35); padding-bottom:1px; }
.topbar-domain:hover{ color:#fff; border-color:#fff; }
.topbar-sep{ opacity:.45; }
.topbar-right{ display:flex; align-items:center; gap:18px; flex:0 0 auto; }
.topbar-right a{ color:rgba(244,241,234,.9); border-bottom:1px solid transparent; }
.topbar-right a:hover{ color:var(--accent-100); border-color:var(--accent-100); }
@media (max-width:639px){
  .topbar-right a:not(:first-child){ display:none; }
  .topbar-left span:not(.topbar-domain){ display:none; }
  .topbar-sep{ display:none; }
}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky; top:0; z-index:60;
  background:rgba(246,244,239,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow 220ms var(--ease), background 220ms var(--ease);
}
.site-header.is-scrolled{ box-shadow:0 10px 30px -22px rgba(20,22,26,.45); background:rgba(255,255,255,.96); }
.header-inner{ display:flex; align-items:center; gap:28px; height:72px; transition:height 220ms var(--ease); }
.site-header.is-scrolled .header-inner{ height:62px; }
.brand{ display:inline-flex; align-items:center; gap:10px; flex:0 0 auto; }
.brand-mark{
  width:34px; height:34px; border-radius:9px; background:var(--brand-700); color:var(--cream);
  display:inline-flex; align-items:center; justify-content:center;
  font-size:13px; font-weight:700; letter-spacing:0;
}
.brand-text{ font-size:17px; font-weight:700; letter-spacing:-.01em; color:var(--brand-900); }
.main-nav{ display:flex; align-items:center; gap:2px; margin-left:auto; }
.nav-link{
  position:relative; display:inline-block; padding:10px 12px; font-size:15px; color:#39413B; border-radius:8px;
  transition:color 220ms var(--ease), background 220ms var(--ease);
}
.nav-link::after{
  content:""; position:absolute; left:12px; right:12px; bottom:3px; height:2px;
  background:var(--accent-500); transform:scaleX(0); transform-origin:left center;
  transition:transform 220ms var(--ease);
}
.nav-link:hover{ color:var(--brand-700); }
.nav-link:hover::after{ transform:scaleX(1); }
.nav-link.is-active{ color:var(--brand-700); font-weight:600; }
.nav-link.is-active::after{ transform:scaleX(1); }
.nav-toggle{
  display:none; width:42px; height:42px; border:1px solid var(--line); border-radius:var(--radius-btn);
  background:var(--surface); align-items:center; justify-content:center; flex:0 0 auto;
}
.nav-toggle span{ display:block; width:18px; height:2px; background:var(--brand-700); position:relative; }
.nav-toggle span::before,.nav-toggle span::after{
  content:""; position:absolute; left:0; width:18px; height:2px; background:var(--brand-700);
}
.nav-toggle span::before{ top:-6px; }
.nav-toggle span::after{ top:6px; }
@media (max-width:1023px){
  .main-nav{ display:none; }
  .nav-toggle{ display:inline-flex; margin-left:auto; }
  .header-inner{ gap:16px; }
}

/* ---------- 移动抽屉 ---------- */
.drawer-backdrop{
  position:fixed; inset:0; background:rgba(11,40,34,.42); z-index:79; opacity:0; pointer-events:none;
  transition:opacity 240ms var(--ease);
}
.drawer-backdrop.is-open{ opacity:1; pointer-events:auto; }
.mobile-drawer{
  position:fixed; top:0; right:0; bottom:0; width:min(86vw,340px); z-index:80;
  background:var(--surface); border-left:1px solid var(--line);
  transform:translateX(102%); transition:transform 280ms var(--ease);
  display:flex; flex-direction:column; padding:20px;
}
.mobile-drawer.is-open{ transform:translateX(0); }
.drawer-head{ display:flex; align-items:center; justify-content:space-between; gap:12px; padding-bottom:16px; border-bottom:1px solid var(--line); }
.drawer-close{ width:38px; height:38px; border:1px solid var(--line); border-radius:var(--radius-btn); font-size:18px; line-height:1; color:var(--brand-700); }
.drawer-nav{ display:flex; flex-direction:column; padding:16px 0; gap:2px; }
.drawer-nav a{
  padding:13px 4px; font-size:16px; color:#39413B; border-bottom:1px solid var(--line);
  display:flex; align-items:center; justify-content:space-between;
}
.drawer-nav a::after{ content:"→"; color:var(--accent-500); font-size:14px; }
.drawer-nav a.is-active{ color:var(--brand-700); font-weight:600; }
.drawer-cta{ margin-top:auto; width:100%; justify-content:center; }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 24px; border-radius:var(--radius-btn); font-size:15px; font-weight:600;
  border:1px solid transparent; transition:all 220ms var(--ease); white-space:nowrap;
}
.btn-primary{ background:var(--brand-700); color:#fff; border-color:var(--brand-700); }
.btn-primary:hover{ background:var(--brand-900); border-color:var(--brand-900); }
.btn-primary .arrow{ transition:transform 220ms var(--ease); }
.btn-primary:hover .arrow{ transform:translateX(4px); }
.btn-ghost{ background:var(--surface); color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--brand-500); color:var(--brand-700); }
.btn:active{ transform:translateY(1px); }
.btn-light{ background:var(--cream); color:var(--brand-900); border-color:transparent; }
.btn-light:hover{ background:#fff; }
.btn-outline-light{ background:transparent; color:var(--cream); border-color:rgba(244,241,234,.4); }
.btn-outline-light:hover{ border-color:var(--accent-100); color:var(--accent-100); }
.text-link{ display:inline-flex; align-items:center; gap:6px; font-size:15px; font-weight:600; color:var(--brand-700); border-bottom:1px solid rgba(30,90,74,.35); padding-bottom:2px; }
.text-link:hover{ color:var(--accent-500); border-color:var(--accent-500); }
.text-link .arrow{ transition:transform 220ms var(--ease); }
.text-link:hover .arrow{ transform:translateX(4px); }

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background-image:linear-gradient(rgba(11,40,34,.74),rgba(11,40,34,.74)),url('/assets/images/backpic/back-1.webp');
  background-size:cover; background-position:center;
  color:var(--cream);
}
.hero-inner{ max-width:860px; margin:0 auto; text-align:center; padding:104px 0 92px; }
.hero-eyebrow{
  display:inline-block; padding:7px 16px; border-radius:999px; font-size:13px; letter-spacing:.04em;
  border:1px solid rgba(243,229,220,.4); color:var(--accent-100); margin-bottom:26px;
}
.hero h1{ color:#fff; }
.hero-sub{ margin-top:20px; font-size:17px; line-height:1.85; color:rgba(244,241,234,.84); }
.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; justify-content:center; margin-top:34px; }
.hero-frame{
  position:relative; margin-top:48px; border:1px solid rgba(244,241,234,.18); border-radius:var(--radius-card);
  padding:22px 24px; display:grid; grid-template-columns:repeat(3,1fr); gap:18px; text-align:left;
}
.hero-frame::before{
  content:""; position:absolute; left:-1px; top:24px; width:3px; height:38px; background:var(--accent-500);
}
.hero-frame-item strong{ display:block; font-size:15px; color:#fff; font-weight:600; }
.hero-frame-item span{ display:block; font-size:13.5px; color:rgba(244,241,234,.7); line-height:1.7; }
@media (max-width:767px){
  .hero-inner{ padding:72px 0 64px; }
  .hero-frame{ grid-template-columns:1fr; gap:14px; text-align:left; }
}

/* ---------- 场景标签行 ---------- */
.scene-tabs{ background:var(--surface); border-bottom:1px solid var(--line); }
.scene-tabs-inner{ display:flex; flex-wrap:wrap; gap:10px; padding:24px 0; align-items:center; }
.scene-tabs-label{ font-size:13.5px; color:var(--muted); margin-right:6px; }
.chip{
  padding:9px 18px; border-radius:999px; border:1px solid var(--line); background:var(--paper);
  font-size:14px; color:var(--muted); line-height:1.4;
}
.chip.is-current{ background:var(--brand-700); border-color:var(--brand-700); color:var(--cream); font-weight:600; }

/* ---------- 板块通用 ---------- */
.section{ padding:var(--section-y) 0; }
.section-head{ max-width:720px; }
.section-head h2{ color:var(--brand-900); }
.section-head p{ margin-top:16px; color:var(--muted); font-size:16px; }
.eyebrow{
  display:inline-block; font-size:13px; letter-spacing:.08em; color:var(--accent-500); font-weight:600; margin-bottom:14px;
}
.section-alt{ background:var(--surface); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }

/* ---------- 场景图文行 ---------- */
.scene-rows{ margin-top:56px; }
.scene-row{
  display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center;
  padding:48px 0; border-top:1px solid var(--line);
}
.scene-row:first-child{ border-top:0; padding-top:8px; }
.scene-row.is-reverse .scene-figure{ order:-1; }
.scene-figure{
  border:1px solid var(--line); border-radius:var(--radius-card); overflow:hidden; background:var(--surface);
  aspect-ratio:16/10; box-shadow:var(--shadow-card);
}
.scene-figure img{ width:100%; height:100%; object-fit:cover; transition:transform 320ms var(--ease); }
.scene-row:hover .scene-figure img{ transform:scale(1.03); }
.scene-index{
  font-size:13px; font-weight:700; color:var(--accent-500); letter-spacing:.1em;
  font-variant-numeric:tabular-nums; margin-bottom:10px; display:block;
}
.scene-copy h3{ color:var(--brand-900); }
.scene-copy > p{ margin-top:14px; color:var(--muted); font-size:16px; }
.points{ margin-top:22px; display:flex; flex-direction:column; gap:12px; }
.points li{ position:relative; padding-left:22px; font-size:15.5px; color:#3A413C; line-height:1.8; }
.points li::before{
  content:""; position:absolute; left:0; top:11px; width:8px; height:8px; border-radius:2px; background:var(--accent-500);
}
.scene-copy .text-link{ margin-top:26px; }
@media (max-width:899px){
  .scene-row{ grid-template-columns:1fr; gap:26px; padding:36px 0; }
  .scene-row.is-reverse .scene-figure{ order:0; }
}

/* ---------- 场景速览指标 ---------- */
.metrics{ display:grid; grid-template-columns:repeat(4,1fr); border-top:1px solid rgba(244,241,234,.16); }
.metric{ padding:34px 26px; border-right:1px solid rgba(244,241,234,.16); }
.metric:last-child{ border-right:0; }
.metric-num{
  font-size:clamp(30px,3.6vw,44px); font-weight:700; color:#fff; line-height:1.1;
  font-variant-numeric:tabular-nums; letter-spacing:-.02em;
}
.metric-num em{ font-size:15px; font-style:normal; font-weight:500; color:var(--accent-100); margin-left:6px; }
.metric-name{ margin-top:10px; font-size:15px; color:var(--cream); font-weight:600; }
.metric-desc{ margin-top:6px; font-size:13.5px; color:rgba(244,241,234,.68); line-height:1.7; }
.metrics-band{
  background-image:linear-gradient(rgba(11,40,34,.92),rgba(11,40,34,.92)),url('/assets/images/backpic/back-3.png');
  background-size:cover; background-position:center;
  border-radius:var(--radius-card); overflow:hidden; margin-top:48px;
}
@media (max-width:899px){ .metrics{ grid-template-columns:repeat(2,1fr); } .metric:nth-child(2){ border-right:0; } .metric:nth-child(1),.metric:nth-child(2){ border-bottom:1px solid rgba(244,241,234,.16); } }
@media (max-width:519px){ .metrics{ grid-template-columns:1fr; } .metric{ border-right:0; border-bottom:1px solid rgba(244,241,234,.16); } .metric:last-child{ border-bottom:0; } }

/* ---------- 落地流程 ---------- */
.steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:0; margin-top:52px; border-top:1px solid var(--line); }
.step{ padding:30px 26px 30px 0; border-right:1px solid var(--line); }
.step:last-child{ border-right:0; }
.step-num{
  font-size:26px; font-weight:700; color:var(--accent-500); font-variant-numeric:tabular-nums; letter-spacing:-.01em;
}
.step h3{ margin-top:12px; font-size:18px; color:var(--brand-900); }
.step p{ margin-top:10px; font-size:15px; color:var(--muted); line-height:1.8; }
@media (max-width:899px){
  .steps{ grid-template-columns:repeat(2,1fr); }
  .step{ border-bottom:1px solid var(--line); padding-right:20px; }
  .step:nth-child(2n){ border-right:0; }
  .step:nth-last-child(-n+2){ border-bottom:0; }
}
@media (max-width:519px){
  .steps{ grid-template-columns:1fr; }
  .step{ border-right:0; padding-right:0; }
  .step:nth-last-child(-n+2){ border-bottom:1px solid var(--line); }
  .step:last-child{ border-bottom:0; }
}

/* ---------- 适配清单长条卡 ---------- */
.fit-list{ margin-top:44px; border-top:1px solid var(--line); }
.fit-item{
  display:grid; grid-template-columns:64px 1fr auto; align-items:center; gap:20px;
  padding:24px 20px; border-bottom:1px solid var(--line); transition:background 220ms var(--ease);
}
.fit-item:hover{ background:var(--surface); }
.fit-item .idx{ font-size:15px; font-weight:700; color:var(--accent-500); font-variant-numeric:tabular-nums; }
.fit-item .txt strong{ display:block; font-size:17px; color:var(--brand-900); }
.fit-item .txt span{ display:block; margin-top:4px; font-size:14.5px; color:var(--muted); }
.fit-item .go{ color:var(--accent-500); font-size:18px; transition:transform 220ms var(--ease); }
.fit-item:hover .go{ transform:translateX(5px); }
@media (max-width:639px){ .fit-item{ grid-template-columns:44px 1fr; gap:14px; } .fit-item .go{ display:none; } }

/* ---------- FAQ ---------- */
.faq-list{ margin-top:44px; border-top:1px solid var(--line); max-width:900px; }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-item summary{
  list-style:none; cursor:pointer; display:flex; align-items:center; justify-content:space-between; gap:20px;
  padding:22px 4px; font-size:18px; font-weight:600; color:var(--brand-900); line-height:1.6;
  transition:color 220ms var(--ease);
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary:hover{ color:var(--brand-500); }
.faq-item summary::after{
  content:"+"; flex:0 0 auto; width:28px; height:28px; border:1px solid var(--line); border-radius:50%;
  display:inline-flex; align-items:center; justify-content:center; font-size:18px; font-weight:400; color:var(--accent-500);
  transition:transform 220ms var(--ease), border-color 220ms var(--ease);
}
.faq-item[open] summary::after{ transform:rotate(45deg); border-color:var(--accent-500); }
.faq-answer{ padding:0 4px 26px; max-width:760px; }
.faq-answer p{ font-size:16px; color:var(--muted); line-height:1.85; }

/* ---------- CTA 通栏 ---------- */
.cta-band{
  background-image:linear-gradient(rgba(11,40,34,.86),rgba(11,40,34,.86)),url('/assets/images/backpic/back-2.png');
  background-size:cover; background-position:center; color:var(--cream);
}
.cta-inner{ max-width:800px; margin:0 auto; text-align:center; padding:88px 0; }
.cta-inner h2{ color:#fff; }
.cta-inner p{ margin-top:18px; color:rgba(244,241,234,.82); font-size:16.5px; }
.cta-actions{ display:flex; flex-wrap:wrap; gap:14px; justify-content:center; margin-top:32px; }
.cta-note{ margin-top:22px; font-size:13.5px; color:rgba(244,241,234,.62); }
@media (max-width:639px){ .cta-inner{ padding:64px 0; } }

/* ---------- 入场动效 ---------- */
.reveal{ opacity:0; transform:translateY(12px); transition:opacity 640ms var(--ease), transform 640ms var(--ease); }
.reveal.is-visible{ opacity:1; transform:none; }

/* ---------- 页脚 ---------- */
.site-footer{ background:var(--brand-900); color:rgba(244,241,234,.78); font-size:14.5px; }
.site-footer .container{ padding-top:0; }
.footer-top{
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  padding:22px 0; border-bottom:1px solid rgba(244,241,234,.14); font-size:13.5px;
}
.footer-top a{ color:var(--accent-100); border-bottom:1px solid rgba(243,229,220,.35); }
.footer-top a:hover{ color:#fff; border-color:#fff; }
.footer-grid{
  display:grid; grid-template-columns:1.6fr 1fr 1fr 1.2fr; gap:40px; padding:56px 0 44px;
}
.footer-brand .brand{ margin-bottom:18px; }
.footer-brand .brand-mark{ background:rgba(244,241,234,.12); color:var(--cream); }
.footer-brand .brand-text{ color:var(--cream); }
.footer-brand p{ font-size:14.5px; line-height:1.85; color:rgba(244,241,234,.7); max-width:360px; }
.footer-col h3{
  font-size:15px; color:#fff; margin-bottom:16px; padding-bottom:12px; border-bottom:1px solid rgba(244,241,234,.14);
}
.footer-col ul{ display:flex; flex-direction:column; gap:11px; }
.footer-col a{ color:rgba(244,241,234,.78); }
.footer-col a:hover{ color:var(--accent-100); }
.footer-col span{ color:rgba(244,241,234,.7); }
.footer-bottom{
  display:flex; align-items:center; justify-content:space-between; gap:14px; flex-wrap:wrap;
  padding:22px 0 26px; border-top:1px solid rgba(244,241,234,.14); font-size:13px; color:rgba(244,241,234,.6);
}
.footer-bottom a{ color:var(--accent-100); }
@media (max-width:1023px){ .footer-grid{ grid-template-columns:1fr 1fr; gap:32px; } }
@media (max-width:639px){ .footer-grid{ grid-template-columns:1fr; padding-top:40px; } }

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

/* roulang page: category3 */
:root{
  --brand-900:#0B2822;
  --brand-700:#123A31;
  --brand-500:#1E5A4A;
  --accent-500:#C4693A;
  --accent-100:#F3E5DC;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --ink:#14161A;
  --muted:#6B6F6A;
  --line:#E3DFD7;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(20,22,26,.04), 0 14px 34px -18px rgba(20,22,26,.20);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:220ms var(--ease);
  --space-section:112px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1280px){.container{padding:0 24px}}
.num{font-variant-numeric:tabular-nums}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--brand-900);color:rgba(244,241,234,.76);font-size:12.5px;line-height:1.5}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px;padding-top:6px;padding-bottom:6px}
.topbar-left{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.topbar-left .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-500);display:inline-block}
.topbar a{color:#F4F1EA;border-bottom:1px solid transparent;transition:var(--t)}
.topbar a:hover{color:var(--accent-100);border-bottom-color:var(--accent-100)}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-right .hide-sm{display:none}
@media(min-width:640px){.topbar-right .hide-sm{display:inline}}
@media(max-width:639px){.topbar-left .hide-xs{display:none}}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:var(--t);
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(20,22,26,.55)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:74px;transition:var(--t)}
.site-header.is-scrolled .header-inner{min-height:62px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:var(--radius-btn);
  background:var(--brand-700);color:#F4F1EA;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;letter-spacing:.02em;flex-shrink:0;
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--brand-900);white-space:nowrap}
.main-nav{display:none;align-items:center;gap:4px}
@media(min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;display:inline-block;
  padding:9px 13px;font-size:15px;color:var(--ink);
  border-radius:8px;transition:var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;
  background:var(--accent-500);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-700);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:none;align-items:center;gap:16px}
@media(min-width:1024px){.header-actions{display:flex}}
.header-actions .link-quiet{font-size:14.5px;color:var(--muted);transition:var(--t)}
.header-actions .link-quiet:hover{color:var(--brand-700)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:var(--t);white-space:nowrap;
}
.btn i{transition:transform var(--t)}
.btn:hover i{transform:translateX(4px)}
.btn-primary{background:var(--brand-700);color:#F4F1EA}
.btn-primary:hover{background:var(--brand-900)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:var(--surface);color:var(--ink);
  transition:var(--t);
}
.nav-toggle:hover{border-color:var(--brand-500)}
@media(min-width:1024px){.nav-toggle{display:none}}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,40,34,.42);
  opacity:0;visibility:hidden;transition:var(--t);z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--paper);z-index:80;
  transform:translateX(102%);transition:transform 260ms var(--ease);
  display:flex;flex-direction:column;padding:22px 20px 24px;
  border-left:1px solid var(--line);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:38px;height:38px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:var(--surface);
  display:flex;align-items:center;justify-content:center;color:var(--ink);
}
.drawer nav{display:flex;flex-direction:column;gap:2px}
.drawer nav a{
  padding:14px 10px;font-size:16px;border-bottom:1px solid var(--line);
  color:var(--ink);transition:var(--t);
}
.drawer nav a:hover{color:var(--brand-700);background:var(--surface);border-radius:8px}
.drawer nav a.is-active{color:var(--brand-700);font-weight:600}
.drawer-cta{margin-top:auto;padding-top:22px}

/* ============ 页面头部（紧凑型） ============ */
.page-head{padding:44px 0 40px;background:var(--paper);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.page-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(11,40,34,.05) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(11,40,34,.05) 1px,transparent 1px);
  background-size:64px 64px;opacity:.7;
}
.page-head .container{position:relative}
.crumb{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.crumb a{transition:var(--t)}
.crumb a:hover{color:var(--brand-500)}
.crumb .sep{color:var(--line)}
.crumb .current{color:var(--ink);font-weight:600}
.page-head h1{
  font-size:clamp(30px,4vw,50px);line-height:1.14;letter-spacing:-.02em;
  font-weight:700;color:var(--brand-900);max-width:760px;
}
.page-head .lead{margin-top:18px;max-width:660px;font-size:17px;color:var(--muted)}
.page-head .meta-row{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:12px 28px;
  font-size:14px;color:var(--muted);align-items:center;
}
.page-head .meta-row span{display:inline-flex;align-items:center;gap:8px}
.page-head .meta-row i{color:var(--brand-500);font-size:13px}

/* ============ 场景标签行 ============ */
.tag-strip{padding:26px 0;border-bottom:1px solid var(--line);background:var(--surface)}
.tag-strip .container{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tag-strip .label{font-size:13px;color:var(--muted);margin-right:6px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 15px;border-radius:999px;font-size:13.5px;
  background:var(--accent-100);color:var(--brand-700);
  border:1px solid transparent;transition:var(--t);
}
.pill.is-current{background:var(--brand-700);color:#F4F1EA}
.pill:hover:not(.is-current){border-color:var(--brand-500)}

/* ============ 板块通用 ============ */
.section{padding:var(--space-section) 0}
.section-tight{padding:76px 0}
.sec-head{max-width:720px;margin-bottom:42px}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--accent-500);font-weight:600;letter-spacing:.06em;
  margin-bottom:14px;
}
.sec-head .eyebrow::before{content:"";width:22px;height:1px;background:var(--accent-500)}
.sec-head h2{font-size:clamp(26px,2.6vw,36px);line-height:1.22;letter-spacing:-.01em;font-weight:700;color:var(--brand-900)}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16px}

/* ============ 案例长条列表 ============ */
.case-list{border-top:1px solid var(--line)}
.case-row{
  display:grid;grid-template-columns:70px 1fr 40px;
  gap:28px;align-items:center;
  padding:30px 14px;border-bottom:1px solid var(--line);
  transition:background var(--t),padding var(--t);
}
.case-row:hover{background:var(--surface);padding-left:24px}
.case-num{
  font-size:22px;font-weight:700;color:var(--accent-500);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.case-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.case-head h3{font-size:21px;line-height:1.35;font-weight:600;color:var(--brand-900)}
.badge{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:var(--accent-100);color:var(--brand-700);font-size:12.5px;font-weight:600;
  white-space:nowrap;
}
.case-row p{margin-top:10px;color:var(--muted);font-size:15.5px;max-width:760px}
.case-arrow{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--brand-500);background:var(--surface);transition:var(--t);
}
.case-row:hover .case-arrow{background:var(--brand-700);color:#F4F1EA;border-color:var(--brand-700);transform:translateX(4px)}
@media(max-width:767px){
  .case-row{grid-template-columns:44px 1fr;gap:16px;padding:24px 6px}
  .case-row:hover{padding-left:6px}
  .case-arrow{display:none}
  .case-num{font-size:18px}
  .case-head h3{font-size:18.5px}
}

/* ============ 深色统计通栏 ============ */
.stats-band{
  background:var(--brand-900);color:#F4F1EA;position:relative;overflow:hidden;
  padding:64px 0;
}
.stats-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(244,241,234,.06) 0 1px,transparent 1px 72px);
}
.stats-band .container{position:relative;z-index:2}
.stats-band .band-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.stats-band h2{font-size:clamp(22px,2.2vw,30px);font-weight:700;letter-spacing:-.01em}
.stats-band .band-head p{color:rgba(244,241,234,.7);font-size:15px;max-width:520px}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(244,241,234,.14)}
@media(min-width:900px){.stats-grid{grid-template-columns:repeat(4,1fr)}}
.stat{background:var(--brand-900);padding:26px 22px}
.stat .value{font-size:clamp(30px,3.4vw,44px);font-weight:700;line-height:1.05;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat .value small{font-size:15px;font-weight:600;margin-left:6px;color:var(--accent-100)}
.stat .label{margin-top:10px;font-size:14px;color:rgba(244,241,234,.72)}

/* ============ 交付节奏（图文） ============ */
.rhythm-grid{display:grid;gap:44px;align-items:center}
@media(min-width:960px){.rhythm-grid{grid-template-columns:1fr 1fr;gap:64px}}
.rhythm-figure{position:relative}
.rhythm-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-card);border:1px solid var(--line);
}
.rhythm-figure::after{
  content:"";position:absolute;left:-14px;bottom:-14px;width:88px;height:88px;
  border-left:2px solid var(--accent-500);border-bottom:2px solid var(--accent-500);
  border-radius:0 0 0 6px;
}
.step-list{display:flex;flex-direction:column}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:20px;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.step:first-child{padding-top:0}
.step:last-child{border-bottom:0;padding-bottom:0}
.step .s-num{
  font-size:15px;font-weight:700;color:var(--accent-500);
  font-variant-numeric:tabular-nums;padding-top:3px;letter-spacing:.04em;
}
.step h3{font-size:19px;font-weight:600;color:var(--brand-900)}
.step p{margin-top:7px;font-size:15px;color:var(--muted)}

/* ============ 引言卡 ============ */
.quote-grid{display:grid;gap:24px}
@media(min-width:900px){.quote-grid{grid-template-columns:1fr 1fr}}
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:34px 32px;box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;gap:20px;transition:var(--t);
}
.quote-card:hover{border-color:var(--brand-500);transform:translateY(-2px)}
.quote-card .q-mark{font-size:26px;color:var(--accent-500);line-height:1}
.quote-card blockquote{margin:0;font-size:17px;line-height:1.8;color:var(--ink)}
.quote-card .q-by{border-top:1px solid var(--line);padding-top:16px;font-size:14px;color:var(--muted)}
.quote-card .q-by strong{display:block;color:var(--brand-900);font-size:15px;font-weight:600;margin-bottom:2px}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;padding:24px 4px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  text-align:left;font-size:18px;font-weight:600;color:var(--brand-900);
  transition:var(--t);min-height:56px;
}
.faq-q:hover{color:var(--brand-500)}
.faq-icon{
  width:28px;height:28px;flex-shrink:0;border-radius:50%;
  border:1px solid var(--line);color:var(--brand-500);
  display:flex;align-items:center;justify-content:center;
  transition:transform var(--t),background var(--t),color var(--t);
  font-size:13px;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand-700);color:#F4F1EA;border-color:var(--brand-700)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease)}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a p{padding:0 4px 26px;color:var(--muted);font-size:15.5px;max-width:780px}

/* ============ 结尾 CTA ============ */
.cta-band{
  position:relative;background:var(--brand-900);color:#F4F1EA;
  overflow:hidden;margin-bottom:0;
}
.cta-band .bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.28;
}
.cta-band::after{content:"";position:absolute;inset:0;background:rgba(11,40,34,.62)}
.cta-inner{position:relative;z-index:2;padding:74px 0;display:grid;gap:28px;align-items:center}
@media(min-width:900px){.cta-inner{grid-template-columns:1.4fr 1fr;gap:56px;padding:86px 0}}
.cta-inner h2{font-size:clamp(26px,2.8vw,38px);line-height:1.22;font-weight:700;letter-spacing:-.01em}
.cta-inner p{margin-top:16px;color:rgba(244,241,234,.78);max-width:560px;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-band .btn-ghost{background:transparent;color:#F4F1EA;border-color:rgba(244,241,234,.34)}
.cta-band .btn-ghost:hover{border-color:var(--accent-100);color:var(--accent-100)}
.cta-band .btn-primary{background:var(--accent-500);color:#fff}
.cta-band .btn-primary:hover{background:#b25a30}
.cta-note{font-size:13.5px;color:rgba(244,241,234,.62)}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(244,241,234,.78);padding-top:0}
.footer-top{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:22px 0;border-bottom:1px solid rgba(244,241,234,.14);font-size:14px;
}
.footer-top a{color:var(--accent-100);border-bottom:1px solid transparent;transition:var(--t)}
.footer-top a:hover{border-bottom-color:var(--accent-100)}
.footer-grid{
  display:grid;gap:36px;padding:56px 0 44px;
}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px}}
.footer-brand .brand{margin-bottom:18px}
.footer-brand .brand-mark{background:rgba(244,241,234,.12);color:#F4F1EA;border:1px solid rgba(244,241,234,.2)}
.footer-brand .brand-text{color:#F4F1EA}
.footer-brand p{font-size:14.5px;line-height:1.8;max-width:360px}
.footer-col h3{font-size:15px;color:#F4F1EA;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px;font-size:14.5px}
.footer-col a{transition:var(--t)}
.footer-col a:hover{color:var(--accent-100)}
@media(min-width:1024px){
  .footer-col{border-left:1px solid rgba(244,241,234,.14);padding-left:32px}
}
.footer-bottom{
  border-top:1px solid rgba(244,241,234,.14);
  padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:13.5px;color:rgba(244,241,234,.62);
}
.footer-bottom a{color:rgba(244,241,234,.82);border-bottom:1px solid transparent;transition:var(--t)}
.footer-bottom a:hover{color:var(--accent-100);border-bottom-color:var(--accent-100)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 620ms var(--ease),transform 620ms var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .btn:hover i{transform:none}
  .case-row:hover .case-arrow{transform:none}
  .quote-card:hover{transform:none}
  *{scroll-behavior:auto !important}
}
@media(max-width:1023px){
  :root{--space-section:72px}
  .section-tight{padding:60px 0}
}
@media(max-width:639px){
  :root{--space-section:56px}
  body{font-size:16px}
  .sec-head{margin-bottom:30px}
  .stat{padding:20px 16px}
  .quote-card{padding:26px 22px}
  .faq-q{font-size:16.5px;padding:20px 2px}
  .cta-inner{padding:56px 0}
}

/* roulang page: category4 */
:root{
    --brand-900:#0B2822;
    --brand-700:#123A31;
    --brand-500:#1E5A4A;
    --accent-500:#C4693A;
    --accent-100:#F3E5DC;
    --paper:#F6F4EF;
    --surface:#FFFFFF;
    --ink:#14161A;
    --muted:#6B6F6A;
    --line:#E3DFD7;
    --dark-ink:#F4F1EA;
    --radius-card:14px;
    --radius-btn:10px;
    --radius-img:12px;
    --shadow-soft:0 1px 2px rgba(20,22,26,.04), 0 14px 34px -18px rgba(20,22,26,.20);
    --ease:cubic-bezier(.2,.7,.3,1);
    --dur:220ms;
    --container:1200px;
  }

  *,*::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:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }

  img{ display:block; max-width:100%; height:auto; }
  a{ color:inherit; text-decoration:none; }
  button{ font:inherit; color:inherit; cursor:pointer; }
  ul{ margin:0; padding:0; list-style:none; }
  h1,h2,h3,h4,p{ margin:0; }

  .container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }

  /* ---------- 顶部信息条 ---------- */
  .top-bar{
    background:var(--brand-900);
    color:rgba(244,241,234,.82);
    font-size:12.5px;
    line-height:1.6;
  }
  .top-bar .container{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    min-height:38px;
    padding-top:6px;
    padding-bottom:6px;
  }
  .top-bar-left{ display:flex; align-items:center; gap:18px; }
  .top-bar-domain{ color:var(--dark-ink); letter-spacing:.02em; }
  .top-bar-note{ display:inline-flex; align-items:center; gap:8px; }
  .top-bar-note::before{
    content:"";
    width:6px; height:6px; border-radius:999px;
    background:var(--accent-500);
    box-shadow:0 0 0 3px rgba(196,105,58,.18);
  }
  .top-bar-right{ display:flex; align-items:center; gap:18px; }
  .top-bar-right a{
    color:var(--dark-ink);
    border-bottom:1px solid rgba(244,241,234,.35);
    padding-bottom:1px;
    transition:color var(--dur) var(--ease), border-color var(--dur) var(--ease);
  }
  .top-bar-right a:hover{ color:var(--accent-100); border-color:var(--accent-100); }

  /* ---------- 主导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.96);
    backdrop-filter:saturate(140%) blur(6px);
    border-bottom:1px solid var(--line);
    transition:box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
  }
  .site-header.is-scrolled{ box-shadow:0 10px 30px -22px rgba(20,22,26,.35); }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    min-height:72px;
    transition:min-height var(--dur) var(--ease);
  }
  .site-header.is-scrolled .header-inner{ min-height:62px; }

  .brand{ display:inline-flex; align-items:center; gap:10px; flex-shrink:0; }
  .brand-mark{
    width:34px; height:34px;
    display:inline-flex; align-items:center; justify-content:center;
    background:var(--brand-700);
    color:var(--dark-ink);
    border-radius:9px;
    font-size:14px;
    font-weight:700;
    letter-spacing:.02em;
  }
  .brand-text{
    font-size:17px;
    font-weight:700;
    color:var(--brand-900);
    letter-spacing:-.01em;
    white-space:nowrap;
  }

  .main-nav{ display:flex; align-items:center; gap:4px; flex-wrap:nowrap; }
  .nav-link{
    position:relative;
    display:inline-block;
    padding:10px 12px;
    font-size:15px;
    color:#2E332F;
    border-radius:8px;
    transition:color var(--dur) var(--ease), background var(--dur) var(--ease);
    white-space:nowrap;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:12px; right:12px; bottom:4px;
    height:2px;
    background:var(--accent-500);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform var(--dur) var(--ease);
  }
  .nav-link:hover{ color:var(--brand-700); }
  .nav-link:hover::after{ transform:scaleX(1); }
  .nav-link.is-active{
    color:var(--brand-900);
    font-weight:700;
  }
  .nav-link.is-active::after{ transform:scaleX(1); }

  .header-side{ display:flex; align-items:center; gap:14px; }
  .link-quiet{
    font-size:14.5px;
    color:var(--muted);
    border-bottom:1px solid transparent;
    transition:color var(--dur) var(--ease), border-color var(--dur) var(--ease);
    white-space:nowrap;
  }
  .link-quiet:hover{ color:var(--brand-700); border-color:var(--brand-500); }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:44px;
    padding:0 22px;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    font-size:15px;
    font-weight:600;
    letter-spacing:.01em;
    transition:background var(--dur) var(--ease), color var(--dur) var(--ease),
               border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
               box-shadow var(--dur) var(--ease);
    white-space:nowrap;
  }
  .btn:active{ transform:translateY(1px); }
  .btn:focus-visible{ outline:2px solid var(--brand-500); outline-offset:2px; }
  .btn-primary{
    background:var(--brand-700);
    color:#FFFFFF;
    box-shadow:0 12px 24px -18px rgba(18,58,49,.9);
  }
  .btn-primary:hover{ background:var(--brand-900); }
  .btn-primary .btn-arrow{ transition:transform var(--dur) var(--ease); }
  .btn-primary:hover .btn-arrow{ transform:translateX(4px); }
  .btn-ghost{
    background:#FFFFFF;
    color:var(--ink);
    border-color:var(--line);
  }
  .btn-ghost:hover{ border-color:var(--brand-500); color:var(--brand-700); }
  .btn-on-dark{
    background:transparent;
    color:var(--dark-ink);
    border-color:rgba(244,241,234,.36);
  }
  .btn-on-dark:hover{ border-color:var(--accent-100); color:var(--accent-100); }
  .btn-sm{ height:40px; padding:0 18px; font-size:14.5px; }

  .nav-toggle{
    display:none;
    width:42px; height:42px;
    align-items:center;
    justify-content:center;
    background:#FFFFFF;
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    transition:border-color var(--dur) var(--ease);
  }
  .nav-toggle:hover{ border-color:var(--brand-500); }
  .nav-toggle:focus-visible{ outline:2px solid var(--brand-500); outline-offset:2px; }
  .nav-toggle span{
    display:block;
    width:18px; height:2px;
    background:var(--brand-900);
    position:relative;
  }
  .nav-toggle span::before,
  .nav-toggle span::after{
    content:"";
    position:absolute; left:0;
    width:18px; height:2px;
    background:var(--brand-900);
  }
  .nav-toggle span::before{ top:-6px; }
  .nav-toggle span::after{ top:6px; }

  .mobile-drawer{
    display:none;
    border-top:1px solid var(--line);
    background:#FFFFFF;
    padding:14px 0 20px;
  }
  .mobile-drawer.is-open{ display:block; }
  .mobile-drawer .container{ display:flex; flex-direction:column; gap:6px; }
  .drawer-link{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:13px 12px;
    border-radius:10px;
    font-size:16px;
    color:#2E332F;
    border-bottom:1px solid var(--paper);
    transition:background var(--dur) var(--ease), color var(--dur) var(--ease);
  }
  .drawer-link:hover{ background:var(--paper); color:var(--brand-700); }
  .drawer-link.is-active{ color:var(--brand-900); font-weight:700; }
  .drawer-link.is-active::after{ content:"当前"; font-size:12px; color:var(--accent-500); font-weight:600; }
  .drawer-cta{ margin-top:14px; width:100%; }

  /* ---------- 通用板块 ---------- */
  .section{ padding:104px 0; }
  .section-tight{ padding:72px 0; }
  .section-head{ max-width:720px; margin-bottom:44px; }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--brand-500);
    letter-spacing:.08em;
    margin-bottom:14px;
  }
  .eyebrow::before{
    content:"";
    width:22px; height:1px;
    background:var(--accent-500);
  }
  h2.section-title{
    font-size:clamp(24px,2.6vw,34px);
    line-height:1.22;
    letter-spacing:-.01em;
    font-weight:700;
    color:var(--brand-900);
  }
  .section-desc{
    margin-top:16px;
    font-size:16.5px;
    color:var(--muted);
    line-height:1.85;
  }

  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    height:26px;
    padding:0 12px;
    border-radius:999px;
    background:var(--accent-100);
    color:var(--brand-700);
    font-size:12.5px;
    font-weight:600;
    letter-spacing:.02em;
  }
  .badge-outline{
    background:transparent;
    border:1px solid rgba(244,241,234,.34);
    color:var(--accent-100);
  }

  /* ---------- 面包屑 ---------- */
  .breadcrumb{
    background:#FFFFFF;
    border-bottom:1px solid var(--line);
  }
  .breadcrumb .container{
    padding-top:14px;
    padding-bottom:14px;
    display:flex;
    align-items:center;
    gap:10px;
    font-size:13px;
    color:var(--muted);
    overflow:hidden;
  }
  .breadcrumb a{ transition:color var(--dur) var(--ease); }
  .breadcrumb a:hover{ color:var(--brand-500); }
  .breadcrumb .sep{ color:#B9B5AC; }
  .breadcrumb .current{ color:var(--ink); white-space:nowrap; }

  /* ---------- 价格页头部 ---------- */
  .page-head{
    background-color:var(--paper);
    background-image:
      linear-gradient(to right, rgba(11,40,34,.055) 1px, transparent 1px),
      linear-gradient(to bottom, rgba(11,40,34,.055) 1px, transparent 1px);
    background-size:64px 64px;
    border-bottom:1px solid var(--line);
    padding:64px 0 68px;
  }
  .page-head-grid{
    display:grid;
    grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
    gap:52px;
    align-items:center;
  }
  h1.page-title{
    font-size:clamp(30px,4vw,50px);
    line-height:1.14;
    letter-spacing:-.02em;
    font-weight:700;
    color:var(--brand-900);
    margin-bottom:20px;
  }
  .page-sub{
    font-size:17px;
    color:var(--muted);
    line-height:1.85;
    max-width:560px;
  }
  .head-meta{
    display:flex;
    flex-wrap:wrap;
    gap:14px 26px;
    margin-top:28px;
    padding-top:22px;
    border-top:1px solid var(--line);
  }
  .head-meta-item{ display:flex; flex-direction:column; gap:2px; }
  .head-meta-item .k{ font-size:12.5px; color:var(--muted); }
  .head-meta-item .v{
    font-size:15.5px;
    font-weight:600;
    color:var(--brand-700);
    font-variant-numeric:tabular-nums;
  }
  .head-figure{
    position:relative;
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow-soft);
    background:#FFFFFF;
  }
  .head-figure img{
    width:100%;
    aspect-ratio:16/11;
    object-fit:cover;
  }
  .head-figure::after{
    content:"";
    position:absolute;
    left:0; top:26px;
    width:3px; height:52px;
    background:var(--accent-500);
  }

  .segmented{
    display:inline-flex;
    align-items:center;
    gap:4px;
    margin-top:30px;
    padding:4px;
    background:#FFFFFF;
    border:1px solid var(--line);
    border-radius:12px;
  }
  .seg-btn{
    height:38px;
    padding:0 18px;
    border:none;
    background:transparent;
    border-radius:9px;
    font-size:14px;
    color:var(--muted);
    transition:background var(--dur) var(--ease), color var(--dur) var(--ease);
  }
  .seg-btn:hover{ color:var(--brand-700); }
  .seg-btn.is-active{
    background:var(--brand-700);
    color:#FFFFFF;
    font-weight:600;
  }
  .seg-btn:focus-visible{ outline:2px solid var(--brand-500); outline-offset:2px; }
  .seg-note{ font-size:13px; color:var(--muted); margin-top:12px; }

  /* ---------- 价格卡 ---------- */
  .plan-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:24px;
    align-items:stretch;
  }
  .plan-card{
    position:relative;
    display:flex;
    flex-direction:column;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:32px 28px;
    box-shadow:var(--shadow-soft);
    transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  }
  .plan-card:hover{ transform:translateY(-2px); border-color:var(--brand-500); }
  .plan-card.is-featured{
    background:var(--brand-700);
    border-color:var(--brand-700);
    color:var(--dark-ink);
    box-shadow:0 24px 50px -30px rgba(11,40,34,.75);
  }
  .plan-card.is-featured:hover{ border-color:var(--brand-900); }
  .plan-flag{
    position:absolute;
    top:-13px; right:24px;
    height:26px;
    padding:0 12px;
    display:inline-flex;
    align-items:center;
    border-radius:999px;
    background:var(--accent-500);
    color:#FFFFFF;
    font-size:12.5px;
    font-weight:600;
    letter-spacing:.04em;
  }
  .plan-name{
    font-size:19px;
    font-weight:700;
    color:var(--brand-900);
    letter-spacing:-.01em;
  }
  .plan-card.is-featured .plan-name{ color:var(--dark-ink); }
  .plan-fit{
    margin-top:8px;
    font-size:14px;
    color:var(--muted);
    min-height:44px;
  }
  .plan-card.is-featured .plan-fit{ color:rgba(244,241,234,.72); }
  .plan-price{
    margin-top:20px;
    padding-top:20px;
    border-top:1px solid var(--line);
    display:flex;
    align-items:baseline;
    gap:8px;
    flex-wrap:wrap;
  }
  .plan-card.is-featured .plan-price{ border-top-color:rgba(244,241,234,.18); }
  .plan-price-num{
    font-size:26px;
    font-weight:700;
    color:var(--brand-700);
    letter-spacing:-.01em;
    font-variant-numeric:tabular-nums;
  }
  .plan-card.is-featured .plan-price-num{ color:var(--dark-ink); }
  .plan-price-unit{ font-size:13.5px; color:var(--muted); }
  .plan-card.is-featured .plan-price-unit{ color:rgba(244,241,234,.66); }

  .plan-list{ margin-top:22px; display:flex; flex-direction:column; gap:11px; flex:1; }
  .plan-list li{
    display:flex;
    gap:10px;
    font-size:14.8px;
    line-height:1.7;
    color:#2E332F;
  }
  .plan-card.is-featured .plan-list li{ color:rgba(244,241,234,.9); }
  .plan-list li::before{
    content:"✓";
    flex:0 0 auto;
    font-size:13px;
    line-height:24px;
    color:var(--brand-500);
    font-weight:700;
  }
  .plan-card.is-featured .plan-list li::before{ color:var(--accent-100); }

  .plan-cta{ margin-top:28px; }
  .plan-cta .btn{ width:100%; }

  .plan-foot-note{
    margin-top:22px;
    font-size:13.5px;
    color:var(--muted);
    display:flex;
    flex-wrap:wrap;
    gap:10px 22px;
  }
  .plan-foot-note span{ display:inline-flex; align-items:center; gap:8px; }
  .plan-foot-note span::before{
    content:"";
    width:6px; height:6px;
    border-radius:999px;
    background:var(--accent-500);
  }

  /* ---------- 报价推进长条卡 ---------- */
  .steps-block{
    background:#FFFFFF;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .steps-list{
    display:flex;
    flex-direction:column;
    border-top:1px solid var(--line);
  }
  .step-row{
    display:grid;
    grid-template-columns:64px minmax(0,1fr) auto;
    gap:22px;
    align-items:center;
    padding:26px 8px;
    border-bottom:1px solid var(--line);
    transition:background var(--dur) var(--ease);
  }
  .step-row:hover{ background:var(--paper); }
  .step-num{
    font-size:20px;
    font-weight:700;
    color:var(--accent-500);
    font-variant-numeric:tabular-nums;
    letter-spacing:.02em;
  }
  .step-name{
    font-size:17px;
    font-weight:700;
    color:var(--brand-900);
  }
  .step-text{
    font-size:14.8px;
    color:var(--muted);
    line-height:1.8;
    margin-top:4px;
    max-width:760px;
  }
  .step-arrow{
    font-size:18px;
    color:var(--brand-500);
    transition:transform var(--dur) var(--ease);
  }
  .step-row:hover .step-arrow{ transform:translateX(4px); }

  /* ---------- 功能对照 ---------- */
  .compare-wrap{
    background:#FFFFFF;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-soft);
  }
  .compare-head{
    display:grid;
    grid-template-columns:minmax(0,1.6fr) repeat(3, minmax(0,.8fr));
    background:var(--brand-700);
    color:var(--dark-ink);
    font-size:13.5px;
    letter-spacing:.02em;
  }
  .compare-head > div{ padding:16px 20px; }
  .compare-head > div:not(:first-child){ text-align:center; border-left:1px solid rgba(244,241,234,.14); }
  .compare-group-title{
    display:flex;
    align-items:center;
    gap:10px;
    padding:16px 20px;
    background:var(--paper);
    border-top:1px solid var(--line);
    font-size:14px;
    font-weight:700;
    color:var(--brand-700);
    letter-spacing:.06em;
  }
  .compare-row{
    display:grid;
    grid-template-columns:minmax(0,1.6fr) repeat(3, minmax(0,.8fr));
    border-top:1px solid var(--line);
    font-size:14.5px;
    transition:background var(--dur) var(--ease);
  }
  .compare-row:hover{ background:#FCFBF8; }
  .compare-row > div{ padding:15px 20px; }
  .compare-row .cell-name{ color:#2E332F; }
  .compare-row .cell-mark{
    text-align:center;
    border-left:1px solid var(--line);
    color:var(--brand-500);
    font-weight:700;
    font-variant-numeric:tabular-nums;
  }
  .compare-row .cell-mark.is-none{ color:#C4C0B7; font-weight:400; }
  .compare-row .cell-mark.is-text{ font-weight:500; color:var(--muted); }

  /* ---------- FAQ ---------- */
  .faq-list{ border-top:1px solid var(--line); }
  .faq-item{ border-bottom:1px solid var(--line); }
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:24px 4px;
    min-height:56px;
    background:transparent;
    border:none;
    text-align:left;
    font-size:17px;
    font-weight:600;
    color:var(--brand-900);
    transition:color var(--dur) var(--ease);
  }
  .faq-q:hover{ color:var(--brand-500); }
  .faq-q:focus-visible{ outline:2px solid var(--brand-500); outline-offset:-2px; }
  .faq-icon{
    flex:0 0 auto;
    width:26px; height:26px;
    position:relative;
    border:1px solid var(--line);
    border-radius:999px;
    transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
  }
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    left:50%; top:50%;
    background:var(--brand-700);
    transform:translate(-50%,-50%);
    transition:background var(--dur) var(--ease);
  }
  .faq-icon::before{ width:11px; height:1.5px; }
  .faq-icon::after{ width:1.5px; height:11px; }
  .faq-item.is-open .faq-icon{
    transform:rotate(45deg);
    background:var(--accent-100);
    border-color:var(--accent-100);
  }
  .faq-item.is-open .faq-icon::before,
  .faq-item.is-open .faq-icon::after{ background:var(--brand-700); }
  .faq-a{
    overflow:hidden;
    max-height:0;
    transition:max-height 320ms var(--ease), opacity var(--dur) var(--ease);
    opacity:0;
  }
  .faq-item.is-open .faq-a{ opacity:1; }
  .faq-a-inner{
    padding:0 4px 26px;
    max-width:820px;
    font-size:15.5px;
    color:var(--muted);
    line-height:1.9;
  }

  /* ---------- CTA 通栏 ---------- */
  .cta-band{
    position:relative;
    background-color:var(--brand-900);
    background-image:url("/assets/images/backpic/back-2.png");
    background-size:cover;
    background-position:center;
    color:var(--dark-ink);
    overflow:hidden;
  }
  .cta-band::before{
    content:"";
    position:absolute; inset:0;
    background:
      linear-gradient(180deg, rgba(11,40,34,.86), rgba(11,40,34,.92)),
      repeating-linear-gradient(90deg, rgba(244,241,234,.05) 0 1px, transparent 1px 96px);
  }
  .cta-inner{
    position:relative;
    display:grid;
    grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
    gap:44px;
    align-items:center;
    padding:82px 0;
  }
  .cta-title{
    font-size:clamp(24px,2.8vw,36px);
    line-height:1.24;
    letter-spacing:-.01em;
    font-weight:700;
  }
  .cta-text{
    margin-top:16px;
    font-size:16px;
    color:rgba(244,241,234,.76);
    max-width:560px;
  }
  .cta-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    margin-top:30px;
  }
  .cta-aside{
    border-left:1px solid rgba(244,241,234,.18);
    padding-left:32px;
    display:flex;
    flex-direction:column;
    gap:14px;
    font-size:14.5px;
    color:rgba(244,241,234,.78);
  }
  .cta-aside strong{ color:var(--dark-ink); font-size:15.5px; }
  .cta-aside a{
    color:var(--accent-100);
    border-bottom:1px solid rgba(243,229,220,.45);
    padding-bottom:1px;
    transition:border-color var(--dur) var(--ease);
  }
  .cta-aside a:hover{ border-color:var(--accent-100); }

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--brand-900);
    color:rgba(244,241,234,.72);
    font-size:14.5px;
  }
  .footer-top{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    flex-wrap:wrap;
    padding:22px 0;
    border-bottom:1px solid rgba(244,241,234,.14);
    font-size:13.5px;
  }
  .footer-top a{
    color:var(--accent-100);
    border-bottom:1px solid rgba(243,229,220,.4);
    padding-bottom:1px;
    transition:border-color var(--dur) var(--ease);
  }
  .footer-top a:hover{ border-color:var(--accent-100); }

  .footer-grid{
    display:grid;
    grid-template-columns:minmax(0,1.5fr) repeat(3, minmax(0,1fr));
    gap:0;
    padding:52px 0 44px;
  }
  .footer-grid > div{ padding:0 32px; }
  .footer-grid > div:first-child{ padding-left:0; }
  .footer-grid > div:not(:first-child){ border-left:1px solid rgba(244,241,234,.14); }
  .footer-grid > div:last-child{ padding-right:0; }

  .footer-brand .brand{ margin-bottom:18px; }
  .footer-brand .brand-mark{ background:rgba(244,241,234,.1); color:var(--dark-ink); }
  .footer-brand .brand-text{ color:var(--dark-ink); }
  .footer-brand p{ line-height:1.85; max-width:400px; }

  .footer-col h3{
    font-size:14px;
    font-weight:700;
    color:var(--dark-ink);
    letter-spacing:.06em;
    margin-bottom:18px;
  }
  .footer-col ul{ display:flex; flex-direction:column; gap:12px; }
  .footer-col a,
  .footer-col span{
    color:rgba(244,241,234,.72);
    transition:color var(--dur) var(--ease);
  }
  .footer-col a:hover{ color:var(--accent-100); }

  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    padding:20px 0 28px;
    border-top:1px solid rgba(244,241,234,.14);
    font-size:13px;
    color:rgba(244,241,234,.6);
  }
  .footer-bottom a{
    color:rgba(244,241,234,.8);
    border-bottom:1px solid rgba(244,241,234,.28);
    transition:color var(--dur) var(--ease), border-color var(--dur) var(--ease);
  }
  .footer-bottom a:hover{ color:var(--accent-100); border-color:var(--accent-100); }

  /* ---------- 入场动效 ---------- */
  .js .reveal{
    opacity:0;
    transform:translateY(12px);
    transition:opacity 480ms var(--ease), transform 480ms var(--ease);
  }
  .js .reveal.is-visible{ opacity:1; transform:none; }

  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior:auto; }
    *,*::before,*::after{
      animation-duration:.001ms !important;
      transition-duration:.001ms !important;
    }
    .js .reveal{ opacity:1; transform:none; }
    .plan-card:hover,
    .step-row:hover .step-arrow,
    .btn-primary:hover .btn-arrow{ transform:none; }
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    .section{ padding:96px 0; }
  }

  @media (max-width:1023px){
    .main-nav{ display:none; }
    .header-side .link-quiet,
    .header-side .btn{ display:none; }
    .nav-toggle{ display:inline-flex; }
    .page-head{ padding:52px 0 56px; }
    .page-head-grid{ grid-template-columns:1fr; gap:36px; }
    .page-sub{ max-width:none; }
    .plan-grid{ grid-template-columns:1fr; }
    .plan-card.is-featured{ order:-1; }
    .plan-fit{ min-height:0; }
    .compare-head,
    .compare-row{ grid-template-columns:minmax(0,1.4fr) repeat(3, minmax(0,.7fr)); font-size:13.5px; }
    .compare-head > div,
    .compare-row > div{ padding:13px 14px; }
    .cta-inner{ grid-template-columns:1fr; gap:32px; padding:64px 0; }
    .cta-aside{ border-left:none; border-top:1px solid rgba(244,241,234,.18); padding-left:0; padding-top:24px; }
    .footer-grid{ grid-template-columns:minmax(0,1fr) minmax(0,1fr); gap:36px 0; padding:44px 0 36px; }
    .footer-grid > div{ padding:0 24px; }
    .footer-grid > div:nth-child(odd){ padding-left:0; }
    .footer-grid > div:nth-child(even){ padding-right:0; }
    .footer-grid > div:nth-child(3){ border-left:none; padding-left:0; }
  }

  @media (max-width:767px){
    body{ font-size:15.5px; }
    .section{ padding:64px 0; }
    .section-tight{ padding:52px 0; }
    .section-head{ margin-bottom:30px; }
    .top-bar-note{ display:none; }
    .top-bar-right{ gap:14px; }
    .top-bar .container{ min-height:34px; }
    .header-inner{ min-height:64px; }
    .site-header.is-scrolled .header-inner{ min-height:58px; }
    .brand-text{ font-size:15.5px; }
    .brand-mark{ width:30px; height:30px; font-size:13px; }
    .step-row{ grid-template-columns:44px minmax(0,1fr); gap:14px; padding:22px 4px; }
    .step-arrow{ display:none; }
    .compare-head{ display:none; }
    .compare-row{ grid-template-columns:minmax(0,1fr); }
    .compare-row .cell-name{
      font-weight:600;
      color:var(--brand-900);
      background:var(--paper);
      padding-bottom:8px;
    }
    .compare-row .cell-mark{
      border-left:none;
      text-align:left;
      padding-top:6px;
      padding-bottom:6px;
    }
    .compare-row .cell-mark::before{
      content:attr(data-plan) "：";
      color:var(--muted);
      font-weight:500;
      font-size:13px;
      margin-right:6px;
    }
    .faq-q{ font-size:16px; padding:20px 2px; }
    .cta-actions .btn{ width:100%; }
    .footer-grid{ grid-template-columns:1fr; gap:32px; }
    .footer-grid > div{ padding:0 !important; border-left:none !important; }
    .footer-col{ border-top:1px solid rgba(244,241,234,.14); padding-top:22px !important; }
    .footer-bottom{ flex-direction:column; align-items:flex-start; gap:8px; }
  }

  @media (max-width:520px){
    .plan-card{ padding:26px 20px; }
    .head-meta{ gap:12px 20px; }
    .segmented{ width:100%; flex-direction:column; align-items:stretch; }
    .seg-btn{ width:100%; }
  }

/* roulang page: category5 */
:root{
  --brand-900:#0B2822;
  --brand-700:#123A31;
  --brand-500:#1E5A4A;
  --accent-500:#C4693A;
  --accent-100:#F3E5DC;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --ink:#14161A;
  --muted:#6B6F6A;
  --line:#E3DFD7;
  --cream:#F4F1EA;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(20,22,26,.04), 0 14px 34px -18px rgba(20,22,26,.20);
  --shadow-head:0 1px 0 rgba(20,22,26,.04), 0 12px 28px -22px rgba(20,22,26,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:220ms;
}

*,*::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:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
p{margin:0}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),opacity var(--dur) var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
input,select,textarea{font:inherit;color:inherit}
figure{margin:0}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1320px){.container{padding:0 40px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-900);color:rgba(244,241,234,.78);font-size:12.5px;line-height:1.5}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;padding-top:8px;padding-bottom:8px}
.topbar-left{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.topbar-domain{color:var(--cream);letter-spacing:.02em}
.topbar-sep{width:1px;height:12px;background:rgba(244,241,234,.22);display:inline-block}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-right a{color:rgba(244,241,234,.86);border-bottom:1px solid rgba(244,241,234,.28);padding-bottom:1px}
.topbar-right a:hover{color:var(--accent-100);border-color:var(--accent-100)}
.topbar-right a + a{display:none}
@media (min-width:768px){.topbar-right a + a{display:inline-block}}
.topbar-left .tip{display:none}
@media (min-width:768px){.topbar-left .tip{display:inline}}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-head)}
.header-inner{display:flex;align-items:center;gap:20px;height:74px;transition:height var(--dur) var(--ease)}
.site-header.is-scrolled .header-inner{height:62px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:none;
  background:var(--brand-700);color:var(--cream);
  display:grid;place-items:center;
  font-size:14px;font-weight:700;letter-spacing:.04em;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.main-nav{display:none;align-items:center;gap:2px;margin:0 auto}
@media (min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;padding:9px 12px;font-size:15px;color:rgba(20,22,26,.78);
  border-radius:8px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--accent-500);transform:scaleX(0);transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-900);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
@media (min-width:1024px){.header-actions{margin-left:0}}
.link-quiet{display:none;font-size:14px;color:var(--muted)}
.link-quiet:hover{color:var(--accent-500)}
@media (min-width:1024px){.link-quiet{display:inline}}
.nav-toggle{
  width:44px;height:44px;display:grid;place-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:10px;
  color:var(--brand-700);cursor:pointer;transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--brand-500);color:var(--brand-900)}
@media (min-width:1024px){.nav-toggle{display:none}}

/* 移动抽屉 */
.nav-overlay{
  position:fixed;inset:0;background:rgba(11,40,34,.45);
  opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
  z-index:70;
}
.nav-overlay.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(330px,88vw);
  background:var(--surface);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .28s var(--ease);
  z-index:80;display:flex;flex-direction:column;padding:20px;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);color:var(--brand-700);cursor:pointer;display:grid;place-items:center;
}
.drawer-nav{display:flex;flex-direction:column;padding:14px 0}
.drawer-nav a{
  padding:14px 4px;font-size:16px;color:rgba(20,22,26,.82);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-900);font-weight:600}
.drawer-nav a.is-active::before{content:"";display:inline-block;width:14px;height:2px;background:var(--accent-500);vertical-align:middle;margin-right:10px}
.drawer-foot{margin-top:auto;padding-top:18px}
@media (min-width:1024px){.nav-drawer,.nav-overlay{display:none}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn i{font-size:13px;transition:transform var(--dur) var(--ease)}
.btn:hover i.fa-arrow-right{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-card)}
.btn-primary:hover{background:var(--brand-900);color:#fff}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700)}
.btn-accent{background:var(--accent-500);color:#fff}
.btn-accent:hover{background:#AE5A2F;color:#fff}
.btn-outline-light{background:transparent;border-color:rgba(244,241,234,.42);color:var(--cream)}
.btn-outline-light:hover{border-color:var(--accent-100);color:var(--accent-100)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%;padding:14px 22px}

/* ---------- 通用排版 ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--accent-500)}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent-500)}
.section{padding:56px 0}
@media (min-width:768px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section--tint{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{font-size:clamp(26px,2.6vw,36px);line-height:1.22;letter-spacing:-.01em;margin-top:14px}
.section-desc{margin-top:14px;font-size:16px;line-height:1.8;color:var(--muted)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--surface);border-bottom:1px solid var(--line);padding-bottom:64px}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:84px 84px;
  -webkit-mask-image:radial-gradient(120% 80% at 75% 0%,#000 0%,transparent 72%);
  mask-image:radial-gradient(120% 80% at 75% 0%,#000 0%,transparent 72%);
}
.hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;padding:22px 0 18px;font-size:13px;color:var(--muted);flex-wrap:wrap}
.breadcrumb a:hover{color:var(--brand-500)}
.breadcrumb .sep{opacity:.55}
.breadcrumb [aria-current]{color:var(--ink)}
.hero-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;padding-top:6px}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.12fr .88fr;gap:56px}}
.hero h1{font-size:clamp(30px,4.2vw,50px);line-height:1.14;letter-spacing:-.02em;margin-top:16px}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--muted);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-figure{
  position:relative;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);aspect-ratio:4/3;background:var(--paper);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::before{
  content:"";position:absolute;left:0;top:28px;width:3px;height:56px;background:var(--accent-500);z-index:3;
}
.fact-list{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0;margin-top:36px;border-top:1px solid var(--line);
}
@media (min-width:768px){.fact-list{grid-template-columns:repeat(4,minmax(0,1fr))}}
.fact{padding:18px 16px 4px 16px;border-left:1px solid var(--line)}
.fact:first-child{border-left:0;padding-left:0}
@media (max-width:767px){
  .fact:nth-child(odd){border-left:0;padding-left:0}
}
.fact-label{display:block;font-size:12.5px;color:var(--muted);letter-spacing:.02em}
.fact-value{display:block;margin-top:6px;font-size:15.5px;font-weight:600;color:var(--brand-700)}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{content:"";position:absolute;left:15px;top:10px;bottom:14px;width:1px;background:var(--line)}
.tl-item{position:relative;padding:0 0 34px 48px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:9px;top:10px;width:13px;height:13px;border-radius:50%;
  background:var(--surface);border:2px solid var(--accent-500);
  box-shadow:0 0 0 4px rgba(243,229,220,.85);
}
.tl-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.tl-num{font-size:22px;font-weight:700;color:var(--accent-500);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.tl-head h3{font-size:20px;line-height:1.35}
.tl-item p{margin-top:10px;font-size:15.5px;line-height:1.85;color:var(--muted);max-width:720px}
@media (min-width:768px){
  .timeline::before{left:19px}
  .tl-item{padding-left:64px;padding-bottom:42px}
  .tl-item::before{left:13px}
}

/* ---------- 保障细卡 ---------- */
.grid-3{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}}
.support-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.support-card:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:0 1px 2px rgba(20,22,26,.05),0 22px 44px -24px rgba(20,22,26,.32)}
.icon-badge{
  width:44px;height:44px;border-radius:12px;background:var(--accent-100);color:var(--brand-700);
  display:grid;place-items:center;font-size:18px;margin-bottom:20px;
}
.support-card h3{font-size:20px;line-height:1.35}
.support-card p{margin-top:12px;font-size:15.5px;line-height:1.8;color:var(--muted)}
.mini-list{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.mini-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--muted)}
.mini-list li::before{
  content:"";position:absolute;left:4px;top:11px;width:8px;height:2px;background:var(--brand-500);
}

/* ---------- 常见问题 ---------- */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--brand-700)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--brand-500);font-size:12px;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--accent-100);border-color:transparent;color:var(--brand-700)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a p{padding:0 0 24px;font-size:15.5px;line-height:1.85;color:var(--muted);max-width:760px}

/* ---------- 联系表单 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:start}
@media (min-width:1024px){.contact-grid{grid-template-columns:1.3fr .7fr;gap:40px}}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-card);
}
@media (min-width:768px){.form-card{padding:34px}}
.form-row{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:640px){.form-row{grid-template-columns:repeat(2,minmax(0,1fr))}}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;letter-spacing:.01em}
.field .req{color:var(--accent-500);margin-left:4px}
.field input,.field select,.field textarea{
  width:100%;min-height:46px;padding:12px 14px;
  border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface);
  font-size:15px;line-height:1.5;color:var(--ink);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.field textarea{min-height:118px;resize:vertical;padding-top:12px}
.field input::placeholder,.field textarea::placeholder{color:#9B9E98}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(30,90,74,.12);
}
.field select{
  appearance:none;-webkit-appearance:none;padding-right:42px;cursor:pointer;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 8'%3E%3Cpath d='M1 1l6 6 6-6' fill='none' stroke='%236B6F6A' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 15px center;background-size:12px;
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(196,105,58,.12)}
.field-error{display:none;margin-top:6px;font-size:13px;color:var(--accent-500)}
.field.has-error .field-error{display:block}
.check-line{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--muted);line-height:1.7;margin:4px 0 22px}
.check-line input{width:18px;height:18px;margin-top:5px;flex:none;accent-color:var(--brand-700)}
.check-line a{color:var(--brand-500);border-bottom:1px solid rgba(30,90,74,.35)}
.form-note{
  display:none;margin-top:16px;padding:12px 16px;border-radius:var(--radius-btn);
  background:var(--accent-100);color:var(--brand-700);font-size:14.5px;
}
.form-note.is-show{display:block}

.info-card{
  background:var(--brand-900);color:var(--cream);border-radius:var(--radius-card);
  padding:30px;border:1px solid rgba(244,241,234,.14);
}
.info-card h3{color:var(--cream);font-size:19px;line-height:1.4}
.info-card p{margin-top:12px;font-size:14.5px;line-height:1.8;color:rgba(244,241,234,.74)}
.info-list{margin-top:22px;display:flex;flex-direction:column}
.info-list li{
  padding:14px 0;border-top:1px solid rgba(244,241,234,.14);
  font-size:14.5px;color:rgba(244,241,234,.78);
}
.info-list li:first-child{border-top:0;padding-top:0}
.info-list strong{display:block;color:var(--cream);font-weight:600;font-size:15px;margin-bottom:4px}
.info-card a{color:var(--accent-100);border-bottom:1px solid rgba(243,229,220,.36)}
.info-card a:hover{color:#fff;border-color:#fff}

/* ---------- 窄 CTA ---------- */
.cta-band{
  position:relative;color:var(--cream);
  background-image:linear-gradient(rgba(11,40,34,.88),rgba(11,40,34,.88)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cta-inner{
  display:flex;flex-direction:column;gap:26px;align-items:flex-start;
  padding-top:56px;padding-bottom:56px;
}
@media (min-width:1024px){
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px;padding-top:68px;padding-bottom:68px}
}
.cta-band h2{color:var(--cream);font-size:clamp(24px,2.4vw,32px);line-height:1.25;letter-spacing:-.01em}
.cta-band p{margin-top:12px;font-size:15.5px;line-height:1.8;color:rgba(244,241,234,.78);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:var(--cream);padding:52px 0 26px;margin-top:0}
.footer-top{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding-bottom:24px;border-bottom:1px solid rgba(244,241,234,.14);
  font-size:13.5px;color:rgba(244,241,234,.72);
}
.footer-top a{color:var(--accent-100);border-bottom:1px solid rgba(243,229,220,.34);padding-bottom:1px}
.footer-top a:hover{color:#fff;border-color:#fff}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:38px 0}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand .brand-text{color:var(--cream)}
.site-footer .brand-mark{background:rgba(244,241,234,.10);border:1px solid rgba(244,241,234,.18);color:var(--cream)}
.footer-brand p{margin-top:16px;font-size:14.5px;line-height:1.85;color:rgba(244,241,234,.72);max-width:360px}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.05em;color:var(--cream);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px;font-size:14.5px;color:rgba(244,241,234,.72);line-height:1.7}
.footer-col ul li a:hover{color:var(--accent-100)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  padding-top:22px;border-top:1px solid rgba(244,241,234,.14);
  font-size:13px;color:rgba(244,241,234,.6);
}
.footer-bottom a{color:rgba(244,241,234,.78);border-bottom:1px solid rgba(244,241,234,.26)}
.footer-bottom a:hover{color:var(--accent-100);border-color:var(--accent-100)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-visible{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}
}