/* roulang page: index */
:root{
  --bg:#F6F3EE;
  --surface:#FFFFFF;
  --surface-2:#EFEAE2;
  --ink:#161A18;
  --ink-2:#4A5250;
  --ink-3:#7C857F;
  --line:#E2DCD2;
  --brand:#E1662B;
  --brand-hover:#C4521C;
  --brand-soft:#FBE7D9;
  --accent-2:#1F3A34;
  --accent-2-deep:#162923;
  --accent-2-soft:#E3EBE7;
  --focus:#2E7D6B;
  --r-card:14px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(22,26,24,.06);
  --shadow-2:0 10px 30px -12px rgba(22,26,24,.16);
  --container:1200px;
  --sp-section:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  padding-bottom:76px;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color 180ms ease,background-color 180ms ease,border-color 180ms ease,transform 180ms ease,box-shadow 180ms ease;}
a:hover{color:var(--brand-hover);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:var(--sp-section) 0;}
.section--alt{background:var(--surface-2);}
.section--plain{background:var(--surface);}
.section--deep{background:var(--accent-2);color:#F3F1EC;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-head h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:0;}
.section-head p{color:var(--ink-3);font-size:13px;line-height:1.6;margin-top:8px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--brand);letter-spacing:.08em;margin-bottom:14px;}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--brand);display:block;}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:14px 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;transition:all 180ms ease;text-align:center;}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-hover);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--accent-2);border-color:var(--accent-2);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--accent-2-soft);color:var(--accent-2);}
.btn-light{background:#fff;color:var(--accent-2);}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-hover);transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.textlink{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:600;}
.textlink::after{content:"→";font-size:14px;transition:transform 180ms ease;}
.textlink:hover::after{transform:translateX(3px);}
.textlink:hover{text-decoration:underline;text-underline-offset:4px;}

/* 标签 */
.badge{display:inline-block;padding:5px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:12px;line-height:1.4;font-weight:600;}
.badge--green{background:var(--accent-2-soft);color:var(--accent-2);}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow 180ms ease,height 180ms ease;}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height 180ms ease;}
.site-header.is-scrolled .nav-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:17px;font-weight:700;letter-spacing:.01em;}
.brand:hover{color:var(--ink);}
.brand-dot{width:8px;height:8px;background:var(--brand);display:block;border-radius:2px;}
.nav-menu{display:flex;align-items:center;gap:28px;}
.nav-menu a{position:relative;color:var(--ink-2);font-size:15px;padding:6px 0;white-space:nowrap;}
.nav-menu a::after{content:"";position:absolute;left:0;bottom:0;width:60%;height:2px;background:var(--brand);opacity:0;transition:opacity 180ms ease;}
.nav-menu a:hover{color:var(--ink);}
.nav-menu a:hover::after{opacity:.6;}
.nav-menu a.is-active{color:var(--ink);font-weight:600;}
.nav-menu a.is-active::after{opacity:1;}
.nav-cta{display:inline-flex;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:transparent;position:relative;cursor:pointer;}
.nav-toggle span{position:absolute;left:12px;right:12px;height:1.5px;background:var(--ink);display:block;transition:transform 180ms ease,opacity 180ms ease;}
.nav-toggle span:nth-child(1){top:17px;}
.nav-toggle span:nth-child(2){top:25px;}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(4px) rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){transform:translateY(-4px) rotate(-45deg);}
.nav-mobile{display:none;}

/* Hero */
.hero{background:linear-gradient(135deg,rgba(225,102,43,.10) 0%,rgba(31,58,52,.10) 100%),var(--bg);border-bottom:1px solid var(--line);}
.hero-inner{padding:72px 0 0;}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center;}
.hero h1{font-size:40px;line-height:1.25;font-weight:800;letter-spacing:0;}
.hero-sub{margin-top:18px;font-size:19px;line-height:1.7;color:var(--ink-2);}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;color:var(--ink-3);font-size:13px;line-height:1.6;}
.hero-meta span{display:inline-flex;align-items:center;}
.hero-meta span+span::before{content:"";width:1px;height:12px;background:var(--line);margin-right:12px;display:inline-block;}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap;}
.hero-figure{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-2);}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-figure::after{content:"";position:absolute;inset:0;background:rgba(31,58,52,.12);pointer-events:none;}
.stat-bar{margin-top:56px;background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-cell{padding:26px 24px;border-left:1px solid var(--line);}
.stat-cell:first-child{border-left:none;}
.stat-num{font-size:28px;font-weight:700;color:var(--brand);line-height:1.2;}
.stat-label{margin-top:6px;font-size:13px;color:var(--ink-3);line-height:1.6;}

/* 卖点错位 */
.adv-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;}
.adv-grid h2{font-size:30px;line-height:1.3;font-weight:700;}
.adv-grid .adv-lead{margin-top:14px;color:var(--ink-2);font-size:16px;line-height:1.75;}
.adv-stack{display:grid;gap:0;}
.adv-item{border-top:1px solid var(--line);padding:28px 0 32px;}
.adv-item:nth-child(2){margin-top:32px;}
.adv-item:nth-child(3){margin-top:64px;}
.adv-num{font-size:15px;font-weight:700;color:var(--brand);letter-spacing:.06em;}
.adv-item h3{font-size:19px;line-height:1.45;font-weight:700;margin-top:10px;}
.adv-item p{margin-top:10px;color:var(--ink-2);font-size:16px;line-height:1.75;}
.adv-item .textlink{margin-top:14px;}

/* 场景演示 */
.scene{display:grid;grid-template-columns:repeat(12,1fr);gap:28px;align-items:center;}
.scene+.scene{margin-top:72px;padding-top:72px;border-top:1px solid var(--line);}
.scene-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 300ms ease;}
.scene-media:hover img{transform:scale(1.03);}
.scene-tag{position:absolute;top:16px;left:16px;padding:5px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;}
.scene-body h3{font-size:19px;line-height:1.45;font-weight:700;}
.scene-body p{margin-top:12px;color:var(--ink-2);font-size:16px;line-height:1.75;}
.scene-body .btn{margin-top:22px;}
.scene--a .scene-media{grid-column:span 6;order:2;}
.scene--a .scene-body{grid-column:span 6;order:1;}
.scene--b .scene-media{grid-column:span 5;order:1;}
.scene--b .scene-body{grid-column:span 7;order:2;}
.scene--c .scene-media{grid-column:span 6;order:2;}
.scene--c .scene-body{grid-column:span 6;order:1;}

/* 社会认同 */
.partner-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--surface);}
.partner-cell{padding:28px 20px;text-align:center;font-size:15px;color:var(--ink-2);border-left:1px solid var(--line);}
.partner-cell:first-child{border-left:none;}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:40px;}
.quote-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;}
.quote-card p{color:var(--ink-2);font-size:16px;line-height:1.75;}
.quote-who{margin-top:18px;font-size:13px;color:var(--ink-3);line-height:1.6;}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.news-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform 180ms ease,box-shadow 180ms ease;}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.news-card a{display:block;color:inherit;}
.news-card a:hover{color:inherit;}
.news-media{overflow:hidden;background:var(--surface-2);}
.news-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 300ms ease;}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-body{padding:22px 24px 24px;}
.news-title{margin-top:14px;font-size:19px;line-height:1.45;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color 180ms ease;}
.news-card:hover .news-title{color:var(--brand);}
.news-desc{margin-top:10px;color:var(--ink-2);font-size:15px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-time{margin-top:16px;font-size:13px;color:var(--ink-3);}
.empty-state{background:var(--surface-2);border:1px dashed var(--line);border-radius:var(--r-card);padding:56px 24px;text-align:center;}
.empty-state p{color:var(--ink-2);font-size:16px;}
.empty-state .btn{margin-top:20px;}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;}
.faq-grid h2{font-size:30px;line-height:1.3;font-weight:700;}
.faq-grid .faq-lead{margin-top:14px;color:var(--ink-2);font-size:16px;line-height:1.75;}
.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:16px;padding:22px 0;background:none;border:0;cursor:pointer;text-align:left;font-size:15px;font-weight:600;color:var(--ink);line-height:1.6;transition:color 180ms ease;}
.faq-q:hover{color:var(--brand);}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-sign{position:relative;width:16px;height:16px;flex:0 0 16px;}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--brand);transition:transform 180ms ease,opacity 180ms ease;}
.faq-sign::before{left:0;top:7px;width:16px;height:1.5px;}
.faq-sign::after{left:7px;top:0;width:1.5px;height:16px;}
.faq-item.is-open .faq-sign::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms ease;}
.faq-a-inner{padding:0 0 24px;}
.faq-a-inner p{color:var(--ink-2);font-size:16px;line-height:1.75;}

/* 底部转化 */
.cta-band{background:var(--accent-2);color:#F3F1EC;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;padding:64px 0;flex-wrap:wrap;}
.cta-inner h2{font-size:30px;line-height:1.3;font-weight:700;color:#fff;}
.cta-inner p{margin-top:12px;color:rgba(243,241,236,.78);font-size:16px;line-height:1.75;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{background:var(--accent-2-deep);color:rgba(243,241,236,.72);}
.footer-grid{display:grid;grid-template-columns:2fr 1.2fr 1.4fr 1.4fr;gap:40px;padding:72px 0 48px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;}
.footer-about{margin-top:14px;font-size:14px;line-height:1.8;}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-list li{margin-bottom:12px;font-size:14px;line-height:1.7;}
.footer-list a{color:rgba(243,241,236,.72);}
.footer-list a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(243,241,236,.16);padding:22px 0;font-size:13px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}

/* 移动端固定条 */
.mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;background:var(--surface);border-top:1px solid var(--line);box-shadow:var(--shadow-2);padding:10px 20px;align-items:center;justify-content:space-between;gap:14px;}
.mobile-bar p{font-size:14px;color:var(--ink-2);line-height:1.5;margin:0;}
.mobile-bar .btn{padding:12px 20px;min-height:44px;font-size:14px;}

/* 返回顶部 */
.to-top{position:fixed;right:28px;bottom:32px;width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;pointer-events:none;transition:opacity 180ms ease,transform 180ms ease;z-index:65;}
.to-top.is-visible{opacity:1;pointer-events:auto;}
.to-top:hover{transform:translateY(-2px);color:var(--brand);}

@media (max-width:1023px){
  :root{--sp-section:64px;}
  .container{padding:0 24px;}
  .nav-menu,.nav-cta{display:none;}
  .nav-toggle{display:block;}
  .nav-mobile{display:block;max-height:0;overflow:hidden;transition:max-height 240ms ease;background:var(--surface);}
  body.nav-open .nav-mobile{max-height:520px;border-top:1px solid var(--line);}
  .nav-mobile ul{padding:0 24px;}
  .nav-mobile li{border-bottom:1px solid var(--line);}
  .nav-mobile a{display:block;padding:18px 0;color:var(--ink-2);font-size:16px;}
  .nav-mobile a.is-active{color:var(--brand);font-weight:600;}
  .nav-mobile .mobile-cta{padding:20px 24px;}
  .nav-mobile .mobile-cta .btn{width:100%;}
  .hero-inner{padding:48px 0 0;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:17px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .stat-cell{border-left:none;border-top:1px solid var(--line);}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-top:none;}
  .stat-cell:nth-child(odd){border-right:1px solid var(--line);}
  .adv-grid{grid-template-columns:1fr;gap:24px;}
  .adv-item:nth-child(2),.adv-item:nth-child(3){margin-top:0;}
  .scene{grid-template-columns:1fr;gap:20px;}
  .scene--a .scene-media,.scene--a .scene-body,
  .scene--b .scene-media,.scene--b .scene-body,
  .scene--c .scene-media,.scene--c .scene-body{grid-column:auto;order:0;}
  .scene-media{order:1;}
  .scene-body{order:2;}
  .partner-grid{grid-template-columns:repeat(2,1fr);}
  .partner-cell{border-left:none;border-top:1px solid var(--line);}
  .partner-cell:nth-child(1),.partner-cell:nth-child(2){border-top:none;}
  .partner-cell:nth-child(odd){border-right:1px solid var(--line);}
  .quote-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-grid{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;padding:56px 0 36px;}
  .mobile-bar{display:flex;}
  .to-top{bottom:88px;right:20px;}
}
@media (max-width:639px){
  :root{--sp-section:56px;}
  body{font-size:16.5px;padding-bottom:78px;}
  .container{padding:0 20px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:16.5px;}
  .hero-actions{flex-direction:column;gap:12px;}
  .hero-actions .btn{width:100%;}
  .section-head h2,.adv-grid h2,.faq-grid h2,.cta-inner h2{font-size:22px;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-cell{border-right:none !important;}
  .stat-cell:nth-child(2){border-top:1px solid var(--line);}
  .quote-grid,.news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-inner{padding:48px 0;}
  .cta-actions{flex-direction:column;width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
  .news-card:hover{transform:none;}
  .scene-media:hover img,.news-card:hover .news-media img{transform:none;}
}

/* roulang page: article */
:root{
  --bg:#F6F3EE;
  --surface:#FFFFFF;
  --surface-2:#EFEAE2;
  --ink:#161A18;
  --ink-2:#4A5250;
  --ink-3:#7C857F;
  --line:#E2DCD2;
  --brand:#E1662B;
  --brand-hover:#C4521C;
  --brand-soft:#FBE7D9;
  --accent-2:#1F3A34;
  --accent-2-soft:#E3EBE7;
  --focus:#2E7D6B;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(22,26,24,.06);
  --shadow-2:0 10px 30px -12px rgba(22,26,24,.16);
  --space-section:88px;
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.75;
  padding-bottom:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color 180ms ease,background-color 180ms ease,border-color 180ms ease,box-shadow 180ms ease,transform 180ms ease;}
button,input,textarea{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{font-family:var(--font-cn);font-weight:700;color:var(--ink);letter-spacing:0;}
p{margin-bottom:1.1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;
  padding:10px 18px;border-radius:0 0 var(--radius-btn) 0;z-index:999;
}
.skip-link:focus{left:0;}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow 180ms ease,background-color 180ms ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);background:#fff;}
.header-inner{
  display:flex;align-items:center;gap:32px;
  min-height:72px;
  transition:min-height 180ms ease;
}
.site-header.is-scrolled .header-inner{min-height:60px;}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;color:var(--ink);
  white-space:nowrap;flex:0 0 auto;
}
.brand:hover{color:var(--brand);}
.brand-dot{
  width:8px;height:8px;border-radius:2px;background:var(--brand);
  display:inline-block;flex:0 0 auto;
}
.nav-menu{
  display:flex;align-items:center;gap:26px;margin-left:auto;
}
.nav-menu a{
  position:relative;
  font-size:15px;color:var(--ink-2);
  padding:6px 0;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:0;width:60%;height:2px;
  background:var(--brand);opacity:0;transform:translateY(2px);
  transition:opacity 180ms ease,transform 180ms ease;
}
.nav-menu a:hover{color:var(--ink);}
.nav-menu a:hover::after{opacity:.45;transform:translateY(0);}
.nav-menu a.is-active{color:var(--ink);font-weight:600;}
.nav-menu a.is-active::after{opacity:1;transform:translateY(0);}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:var(--surface);border-radius:var(--radius-btn);
  align-items:center;justify-content:center;flex-direction:column;gap:6px;
  cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:20px;height:1.5px;background:var(--ink);transition:transform 180ms ease,opacity 180ms ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(3.75px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){transform:translateY(-3.75px) rotate(-45deg);}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:block;padding:18px 20px;font-size:16px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.mobile-panel a:hover{background:var(--surface-2);color:var(--ink);}
.mobile-panel a.is-active{color:var(--brand);font-weight:600;}
.mobile-panel .mobile-cta{padding:20px;border-bottom:none;}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;line-height:1.2;border-radius:var(--radius-btn);
  padding:14px 26px;border:1px solid transparent;cursor:pointer;
  transition:background-color 180ms ease,color 180ms ease,border-color 180ms ease,transform 180ms ease,box-shadow 180ms ease;
  min-height:44px;text-align:center;
}
.btn-primary{background:var(--brand);color:#fff;font-weight:600;}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-ghost{background:transparent;color:var(--accent-2);border-color:var(--accent-2);}
.btn-ghost:hover{background:var(--accent-2-soft);color:var(--accent-2);transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14px;min-height:40px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand);font-size:15px;font-weight:600;
}
.link-arrow::after{content:"→";transition:transform 180ms ease;}
.link-arrow:hover{color:var(--brand-hover);text-decoration:underline;text-underline-offset:4px;}
.link-arrow:hover::after{transform:translateX(2px);}

/* ============ badges ============ */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  font-size:12px;line-height:1.6;letter-spacing:.02em;
}
.badge-brand{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.badge-dark{background:var(--accent-2-soft);color:var(--accent-2);}

/* ============ article layout ============ */
.page-top{padding-top:24px;}
.breadcrumb{
  font-size:13px;color:var(--ink-3);line-height:1.6;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink-3);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.article-shell{
  display:grid;
  grid-template-columns:minmax(0,760px) 240px;
  gap:56px;
  justify-content:center;
  padding:40px 0 var(--space-section);
  align-items:start;
}
.article-main{min-width:0;}
.article-head{margin-bottom:32px;}
.article-head h1{
  font-size:34px;line-height:1.3;margin:16px 0 18px;
  word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:var(--ink-3);
}
.article-meta .divider{width:1px;height:12px;background:var(--line);display:inline-block;}

.article-body{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:40px;
  font-size:17px;line-height:1.75;color:var(--ink-2);
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:26px;line-height:1.35;color:var(--ink);
  margin:2em 0 .6em;
}
.article-body h3{
  font-size:19px;line-height:1.45;color:var(--ink);
  margin:1.6em 0 .5em;
}
.article-body p{margin-bottom:1.1em;color:var(--ink-2);}
.article-body strong{color:var(--ink);}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-hover);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:4px;}
.article-body li{
  position:relative;padding-left:20px;margin-bottom:.5em;color:var(--ink-2);
}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:12px;
  width:8px;height:2px;background:var(--brand);
}
.article-body ol{counter-reset:cmsol;}
.article-body ol li{counter-increment:cmsol;}
.article-body ol li::before{
  content:counter(cmsol)".";
  position:absolute;left:0;top:0;color:var(--brand);font-weight:600;
}
.article-body blockquote{
  margin:1.6em 0;padding:18px 24px;
  border-left:3px solid var(--brand);
  background:var(--surface-2);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-card);margin:1.6em 0 12px;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:12px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:12px 16px;text-align:left;
}
.article-body th{background:var(--surface-2);color:var(--ink);font-weight:600;}
.article-body code{
  background:var(--accent-2-soft);color:var(--accent-2);
  padding:2px 8px;border-radius:6px;font-size:15px;
}
.article-body pre{
  background:var(--accent-2-soft);color:var(--accent-2);
  padding:20px;border-radius:var(--radius-card);overflow-x:auto;
  font-size:15px;line-height:1.7;
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2em 0;}

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

/* ============ tags ============ */
.tag-row{
  display:flex;flex-wrap:wrap;gap:10px;
  padding:28px 0;margin-top:8px;
  border-top:1px solid var(--line);
}
.tag-row .tag-label{font-size:13px;color:var(--ink-3);align-self:center;}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
  font-size:12px;color:var(--ink-2);line-height:1.6;
  transition:border-color 180ms ease,color 180ms ease,background-color 180ms ease;
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}

/* ============ related ============ */
.related-block{margin-top:40px;}
.related-head{
  display:flex;align-items:baseline;justify-content:space-between;
  gap:20px;margin-bottom:20px;
}
.related-head h2{font-size:22px;}
.related-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;
}
.mini-card{
  display:block;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line);}
.mini-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--surface-2);}
.mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms ease;}
.mini-card:hover .mini-thumb img{transform:scale(1.03);}
.mini-body{padding:18px;}
.mini-body h3{
  font-size:16px;line-height:1.5;margin:10px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-card:hover .mini-body h3{color:var(--brand);}
.mini-time{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;}
.back-row{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;}

/* ============ sidebar ============ */
.article-side{
  position:sticky;top:96px;
  display:flex;flex-direction:column;gap:20px;
}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;
}
.side-title{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;}
.side-list li{border-bottom:1px solid var(--line);}
.side-list li:last-child{border-bottom:none;}
.side-list a{
  display:block;padding:12px 0;font-size:14px;color:var(--ink-2);
}
.side-list a:hover{color:var(--brand);}
.side-cta{background:var(--accent-2);border-color:var(--accent-2);color:#fff;}
.side-cta .side-title{color:#fff;}
.side-cta p{font-size:13px;color:rgba(255,255,255,.78);margin-bottom:16px;line-height:1.7;}
.side-cta .btn-primary{background:var(--brand);width:100%;}

/* ============ bottom cta ============ */
.bottom-cta{
  background:var(--accent-2);color:#fff;
  padding:72px 0;
}
.bottom-cta .cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.bottom-cta h2{color:#fff;font-size:26px;line-height:1.35;margin-bottom:12px;}
.bottom-cta p{color:rgba(255,255,255,.78);font-size:16px;max-width:560px;margin:0;}
.bottom-cta .cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.bottom-cta .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5);}
.bottom-cta .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}

/* ============ footer ============ */
.site-footer{
  background:var(--surface-2);
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;color:var(--ink);margin-bottom:14px;
}
.footer-about{font-size:14px;color:var(--ink-3);line-height:1.7;max-width:280px;margin:0;}
.footer-title{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:16px;}
.footer-list li{margin-bottom:10px;}
.footer-list a,.footer-list span{font-size:14px;color:var(--ink-2);}
.footer-list a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:48px;padding:20px 0;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);
}

/* ============ mobile bar ============ */
.mobile-bar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:var(--surface);border-top:1px solid var(--line);
  box-shadow:var(--shadow-2);
  padding:10px 20px;
  align-items:center;justify-content:space-between;gap:14px;
  min-height:60px;
}
.mobile-bar span{font-size:14px;color:var(--ink-2);}
.mobile-bar .btn{padding:10px 18px;font-size:14px;}

@media (max-width:1199px){
  .article-shell{grid-template-columns:minmax(0,760px);}
  .article-side{display:none;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn-ghost{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  :root{--space-section:64px;}
}
@media (max-width:767px){
  body{font-size:16.5px;}
  .container{padding:0 20px;}
  .article-shell{padding:28px 0 56px;gap:32px;}
  .article-head h1{font-size:28px;}
  .article-body{padding:24px 20px;font-size:16.5px;border-radius:var(--radius-card);}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:17px;}
  .related-grid{grid-template-columns:1fr;}
  .bottom-cta{padding:56px 0;}
  .bottom-cta h2{font-size:22px;}
  .bottom-cta .cta-actions{width:100%;}
  .bottom-cta .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
  .mobile-bar{display:flex;}
  body{padding-bottom:76px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .mini-card:hover{transform:none;}
  .mini-card:hover .mini-thumb img{transform:none;}
  .btn:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --bg:#F6F3EE;
  --surface:#FFFFFF;
  --surface-2:#EFEAE2;
  --ink:#161A18;
  --ink-2:#4A5250;
  --ink-3:#7C857F;
  --line:#E2DCD2;
  --brand:#E1662B;
  --brand-hover:#C4521C;
  --brand-soft:#FBE7D9;
  --accent-2:#1F3A34;
  --accent-2-soft:#E3EBE7;
  --focus:#2E7D6B;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(22,26,24,.06);
  --shadow-2:0 10px 30px -12px rgba(22,26,24,.16);
  --font:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
  --pad-section:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color 180ms ease,background-color 180ms ease,border-color 180ms ease,transform 180ms ease,box-shadow 180ms ease;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:40px;line-height:1.25;letter-spacing:0;font-weight:700;}
h2{font-size:30px;line-height:1.3;font-weight:700;}
h3{font-size:19px;line-height:1.45;font-weight:600;}
p{line-height:1.75;}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

/* 容器 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--pad-section) 0;}
.section--alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--plain{background:var(--bg);border-top:1px solid var(--line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;line-height:1.6;color:var(--ink-3);letter-spacing:.04em;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--brand);display:inline-block;}
.section-head{max-width:660px;margin-bottom:44px;}
.section-head p{color:var(--ink-2);margin-top:12px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:14px;font-weight:600;line-height:1;
  padding:14px 26px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;
  transition:all 180ms ease;min-height:44px;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--accent-2);border-color:var(--accent-2);}
.btn-ghost:hover{background:var(--accent-2-soft);}
.btn-light{background:#fff;color:var(--accent-2);}
.btn-light:hover{background:var(--brand-soft);transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);}
.btn-sm{padding:10px 18px;font-size:13px;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand);font-size:14px;font-weight:600;
}
.text-link .arrow{transition:transform 180ms ease;font-size:15px;line-height:1;}
.text-link:hover .arrow{transform:translateX(2px);}
.text-link:hover{text-decoration:underline;text-underline-offset:4px;}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  font-size:12px;line-height:1.6;font-weight:600;
  background:var(--brand-soft);color:var(--brand);
}
.tag--green{background:var(--accent-2-soft);color:var(--accent-2);}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow 180ms ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:78px;transition:height 180ms ease;}
.site-header.is-scrolled .header-inner{height:62px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand-dot{width:8px;height:8px;background:var(--brand);display:inline-block;flex:0 0 8px;border-radius:1px;}
.nav-menu{display:flex;align-items:center;gap:28px;}
.nav-menu a{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:0;width:60%;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform 180ms ease;
}
.nav-menu a:hover{color:var(--ink);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.is-active{color:var(--ink);font-weight:600;}
.nav-menu a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:6px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform 180ms ease,opacity 180ms ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(3.75px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){transform:translateY(-3.75px) rotate(-45deg);}
.mobile-nav{
  display:none;position:fixed;inset:78px 0 0 0;background:#fff;z-index:55;
  padding:8px 20px 28px;overflow-y:auto;
}
.mobile-nav.is-open{display:block;}
.mobile-nav a{
  display:block;padding:18px 4px;font-size:16px;color:var(--ink-2);border-bottom:1px solid var(--line);
}
.mobile-nav a.is-active{color:var(--brand);font-weight:600;}
.mobile-nav .mobile-cta{margin-top:24px;display:flex;}
.mobile-nav .mobile-cta .btn{width:100%;}

/* 面包屑 */
.breadcrumb{padding:24px 0 0;font-size:13px;line-height:1.6;color:var(--ink-3);}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{margin:0 8px;color:var(--line);}
.breadcrumb .current{color:var(--ink-3);}

/* Hero banner */
.hero-banner{
  position:relative;
  margin-top:24px;
  border-radius:var(--radius-card);
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  min-height:440px;
  display:flex;
  align-items:flex-end;
}
.hero-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(31,58,52,.86),rgba(31,58,52,.58));
}
.hero-banner-inner{position:relative;z-index:2;padding:64px 56px;max-width:820px;}
.hero-banner .tag{background:rgba(255,255,255,.16);color:#fff;}
.hero-banner h1{color:#fff;margin:18px 0 16px;}
.hero-banner .hero-sub{color:rgba(255,255,255,.86);font-size:17px;line-height:1.75;max-width:600px;}
.hero-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap;}

/* 时间轴线 */
.timeline{position:relative;margin-top:8px;}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:132px 1fr;
  gap:32px;
  padding:0 0 44px 40px;
  border-left:1px solid var(--line);
}
.tl-item:last-child{border-left-color:transparent;padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-6px;top:8px;
  width:11px;height:11px;border-radius:50%;
  background:#fff;border:2px solid var(--brand);
}
.tl-item--now::before{background:var(--brand);}
.tl-stage{
  font-size:13px;line-height:1.6;color:var(--brand);font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:.04em;padding-top:4px;
}
.tl-body h3{margin-bottom:10px;}
.tl-body p{color:var(--ink-2);max-width:760px;}
.tl-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tl-points span{
  font-size:12px;color:var(--accent-2);background:var(--accent-2-soft);
  padding:4px 12px;border-radius:999px;
}

/* 阶段数据条 */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;margin-top:8px;
}
.stat-cell{padding:28px 24px;border-right:1px solid var(--line);}
.stat-cell:last-child{border-right:none;}
.stat-num{font-size:28px;font-weight:700;color:var(--brand);line-height:1.2;}
.stat-label{font-size:13px;color:var(--ink-3);margin-top:6px;line-height:1.6;}

/* 图文分栏 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split-media{position:relative;border-radius:var(--radius-card);overflow:hidden;background:var(--surface-2);aspect-ratio:16/10;}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split-media .media-tag{
  position:absolute;top:16px;left:16px;background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;
}
.split-body h2{margin-bottom:16px;}
.split-body p{color:var(--ink-2);margin-bottom:14px;}

/* 主线列表 */
.line-list{border-top:1px solid var(--line);}
.line-list li{
  display:grid;grid-template-columns:80px 1fr 220px;gap:24px;align-items:baseline;
  padding:24px 8px;border-bottom:1px solid var(--line);transition:background-color 180ms ease;
}
.line-list li:hover{background:var(--surface-2);}
.line-list .idx{font-size:14px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;}
.line-list .li-title{font-size:17px;font-weight:600;color:var(--ink);}
.line-list .li-desc{font-size:14px;color:var(--ink-3);line-height:1.7;}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;}
.faq-side h2{margin-bottom:14px;}
.faq-side p{color:var(--ink-2);font-size:15px;}
.accordion{margin:0;border:none;background:transparent;}
.accordion .accordion-item{border:none;border-bottom:1px solid var(--line);background:transparent;}
.accordion .accordion-item:first-child{border-top:1px solid var(--line);}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 4px;font-size:15px;font-weight:600;color:var(--ink);
  background:transparent;border:none;line-height:1.6;transition:color 180ms ease;
}
.accordion .accordion-title:hover{color:var(--brand);}
.accordion .accordion-title::before{display:none;}
.accordion .accordion-title::after{
  content:"";flex:0 0 12px;width:12px;height:12px;
  background:
    linear-gradient(var(--ink-3),var(--ink-3)) center/12px 1.5px no-repeat,
    linear-gradient(var(--ink-3),var(--ink-3)) center/1.5px 12px no-repeat;
  transition:transform 180ms ease,background 180ms ease;
}
.accordion .accordion-item.is-active .accordion-title{color:var(--brand);}
.accordion .accordion-item.is-active .accordion-title::after{
  background:linear-gradient(var(--brand),var(--brand)) center/12px 1.5px no-repeat;
  transform:rotate(180deg);
}
.accordion .accordion-content{
  display:none;padding:0 4px 22px;border:none;background:transparent;
  color:var(--ink-2);font-size:16px;line-height:1.75;
}
.accordion .accordion-content.is-active{display:block;}

/* CTA 深色区 */
.cta-block{background:var(--accent-2);color:#fff;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;padding:64px 0;}
.cta-inner h2{color:#fff;max-width:620px;}
.cta-inner p{color:rgba(255,255,255,.78);margin-top:12px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{background:var(--accent-2);color:rgba(255,255,255,.78);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;}
.footer-about{font-size:14px;line-height:1.7;margin-top:14px;max-width:320px;color:rgba(255,255,255,.72);}
.footer-title{font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.6);margin-bottom:16px;}
.footer-list li{margin-bottom:10px;font-size:14px;line-height:1.7;}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;font-size:13px;color:rgba(255,255,255,.6);flex-wrap:wrap;
}

/* 移动端固定转化条 */
.mobile-cta-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--line);box-shadow:var(--shadow-2);
  padding:10px 20px;align-items:center;justify-content:space-between;gap:12px;height:62px;
}
.mobile-cta-bar span{font-size:14px;color:var(--ink-2);}
.mobile-cta-bar .btn{padding:12px 20px;font-size:13px;}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:32px;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  display:flex;align-items:center;justify-content:center;font-size:15px;cursor:pointer;
  opacity:0;pointer-events:none;transition:opacity 180ms ease;z-index:65;
}
.to-top.is-show{opacity:1;pointer-events:auto;}
.to-top:hover{color:var(--brand);border-color:var(--brand);}

@media (max-width:1023px){
  :root{--pad-section:64px;}
  h1{font-size:32px;}
  h2{font-size:25px;}
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .split{grid-template-columns:1fr;gap:32px;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .stat-strip{grid-template-columns:1fr 1fr;}
  .stat-cell:nth-child(2){border-right:none;}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--line);}
  .line-list li{grid-template-columns:60px 1fr;gap:16px;}
  .line-list .li-desc{grid-column:2;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:56px 0;}
}
@media (max-width:639px){
  :root{--pad-section:56px;}
  body{font-size:16.5px;padding-bottom:62px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:17px;}
  .container{padding:0 20px;}
  .header-actions .btn-sm{display:none;}
  .mobile-nav{inset:78px 0 0 0;}
  .hero-banner{min-height:380px;margin-top:16px;}
  .hero-banner-inner{padding:40px 24px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .tl-item{grid-template-columns:1fr;gap:8px;padding-left:24px;}
  .tl-stage{padding-top:0;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-cell{border-right:none;border-bottom:1px solid var(--line);}
  .stat-cell:last-child{border-bottom:none;}
  .footer-grid{grid-template-columns:1fr;}
  .mobile-cta-bar{display:flex;}
  .to-top{bottom:78px;right:16px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .btn:hover,.text-link:hover .arrow{transform:none;}
}

/* roulang page: category2 */
:root{
  --bg:#F6F3EE;
  --surface:#FFFFFF;
  --surface-2:#EFEAE2;
  --ink:#161A18;
  --ink-2:#4A5250;
  --ink-3:#7C857F;
  --line:#E2DCD2;
  --brand:#E1662B;
  --brand-hover:#C4521C;
  --brand-soft:#FBE7D9;
  --accent-2:#1F3A34;
  --accent-2-soft:#E3EBE7;
  --focus:#2E7D6B;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(22,26,24,.06);
  --shadow-2:0 10px 30px -12px rgba(22,26,24,.16);
  --pad-section:88px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color 180ms ease,background-color 180ms ease,border-color 180ms ease}
a:hover{color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;letter-spacing:0}
h1{font-size:40px;line-height:1.25}
h2{font-size:30px;line-height:1.3}
h3{font-size:19px;line-height:1.45}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:16px;color:var(--ink)}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:2px}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.01em}

.container{max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--pad-section) 0}
.section--alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .eyebrow{display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:4px 12px;margin-bottom:16px}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:16.5px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:14px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;line-height:1;text-align:center;
  transition:background-color 180ms ease,color 180ms ease,border-color 180ms ease,transform 180ms ease,box-shadow 180ms ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px)}
.btn-secondary{background:transparent;color:var(--accent-2);border:1px solid var(--accent-2)}
.btn-secondary:hover{background:var(--accent-2-soft);color:var(--accent-2)}
.btn-on-dark{background:var(--brand);color:#fff}
.btn-on-dark:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:500;border-bottom:1px solid transparent}
.link-arrow::after{content:"";width:12px;height:1px;background:currentColor;transition:transform 180ms ease}
.link-arrow:hover{border-bottom-color:var(--brand)}
.link-arrow:hover::after{transform:translateX(2px)}

/* 头部与导航 */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow 180ms ease}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--header-h);transition:height 180ms ease}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:600;color:var(--ink);white-space:nowrap}
.brand-dot{width:8px;height:8px;background:var(--brand);border-radius:2px;flex:none}
.nav-menu{display:flex;align-items:center;gap:30px}
.nav-menu a{position:relative;font-size:15px;color:var(--ink-2);padding:6px 0}
.nav-menu a::after{content:"";position:absolute;left:0;bottom:0;width:60%;height:2px;background:var(--brand);opacity:0;transition:opacity 180ms ease}
.nav-menu a:hover{color:var(--ink)}
.nav-menu a:hover::after{opacity:.5}
.nav-menu a.is-active{color:var(--ink);font-weight:500}
.nav-menu a.is-active::after{opacity:1}
.nav-menu-cta{display:none}
.header-actions{display:flex;align-items:center;gap:16px}
.header-cta{min-height:42px;padding:11px 20px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:flex-end;gap:6px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink)}
.nav-toggle span:last-child{width:14px}

/* 面包屑 */
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);padding:24px 0 4px}
.crumbs a{color:var(--ink-3)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:var(--line)}
.crumbs .current{color:var(--ink-3)}

/* Hero */
.page-hero{background:var(--surface);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding:32px 0 64px}
.hero-copy h1{margin-bottom:16px}
.hero-lead{font-size:17px;color:var(--ink-2);max-width:46ch;margin-bottom:26px}
.hero-figure{border-radius:var(--radius-card);overflow:hidden;position:relative;box-shadow:var(--shadow-1)}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-figure::after{content:"";position:absolute;inset:0;background:rgba(31,58,52,.12)}

/* 概览键值行 */
.overview{background:var(--surface-2);border-bottom:1px solid var(--line);padding:36px 0}
.overview-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.overview-item{padding:0 26px;border-left:1px solid var(--line)}
.overview-item:first-child{padding-left:0;border-left:0}
.overview-item:last-child{padding-right:0}
.overview-key{font-size:13px;color:var(--ink-3);margin-bottom:8px}
.overview-val{font-size:15.5px;color:var(--ink);line-height:1.6}

/* 能力双栏 */
.cap-layout{display:grid;grid-template-columns:3fr 9fr;gap:56px;align-items:start}
.anchor-sticky{position:sticky;top:96px}
.anchor-title{font-size:13px;letter-spacing:.06em;color:var(--ink-3);margin-bottom:12px}
.anchor-list a{display:flex;align-items:center;gap:10px;padding:12px 0;font-size:15px;color:var(--ink-2);border-bottom:1px solid var(--line)}
.anchor-list .dot{width:6px;height:6px;border-radius:50%;background:var(--line);flex:none;transition:background-color 180ms ease}
.anchor-list a:hover{color:var(--brand)}
.anchor-list a:hover .dot{background:var(--brand-soft)}
.anchor-list a.is-active{color:var(--brand);font-weight:500}
.anchor-list a.is-active .dot{background:var(--brand)}
.anchor-cta{margin-top:24px;width:100%}

.cap-item{padding:32px 0;border-bottom:1px solid var(--line);scroll-margin-top:100px}
.cap-item:first-child{padding-top:0}
.cap-item:last-child{border-bottom:0;padding-bottom:0}
.cap-head{display:flex;align-items:baseline;gap:14px;margin-bottom:12px}
.cap-num{font-size:15px;color:var(--brand);font-weight:600;font-variant-numeric:tabular-nums}
.cap-item p{font-size:16.5px;color:var(--ink-2);max-width:62ch;margin-bottom:18px}
.cap-points{display:grid;grid-template-columns:1fr 1fr;gap:8px 32px;border-top:1px dashed var(--line);padding-top:16px}
.cap-points li{position:relative;padding-left:18px;font-size:15.5px;color:var(--ink-2)}
.cap-points li::before{content:"";position:absolute;left:0;top:13px;width:9px;height:1px;background:var(--brand)}

/* 流程 */
.process{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:var(--pad-section) 0}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:36px;margin-top:8px}
.process-item{border-left:1px solid var(--line);padding-left:24px}
.process-item .p-num{font-size:24px;color:var(--brand);font-weight:600;font-variant-numeric:tabular-nums;display:block;margin-bottom:10px}
.process-item h3{margin-bottom:8px}
.process-item p{font-size:15.5px;color:var(--ink-2)}

/* 交付清单 */
.deliver-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.deliver-intro p{color:var(--ink-2);font-size:16.5px;margin-top:14px}
.deliver-list li{display:flex;align-items:center;gap:18px;padding:22px 4px;border-bottom:1px solid var(--line);transition:background-color 180ms ease}
.deliver-list li:first-child{border-top:1px solid var(--line)}
.deliver-list li:hover{background:var(--surface-2)}
.deliver-list .idx{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;min-width:26px}
.deliver-list .txt{flex:1;font-size:16px;color:var(--ink)}
.deliver-list .tag{font-size:12px;color:var(--accent-2);background:var(--accent-2-soft);border-radius:999px;padding:4px 12px;white-space:nowrap}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-side p{font-size:16px;color:var(--ink-2);margin-top:14px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;padding:20px 0;font-size:15.5px;font-weight:500;color:var(--ink);transition:color 180ms ease}
.faq-q:hover{color:var(--brand)}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-sign{position:relative;width:14px;height:14px;flex:none}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;left:0;top:6px;width:14px;height:1.5px;background:currentColor;transition:transform 180ms ease,opacity 180ms ease}
.faq-sign::after{transform:rotate(90deg)}
.faq-item.is-open .faq-sign::after{transform:rotate(0deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 180ms ease}
.faq-a-inner{padding:0 0 22px;font-size:16px;color:var(--ink-2);line-height:1.75;max-width:70ch}

/* CTA */
.cta-band{background:var(--accent-2);color:rgba(255,255,255,.86);padding:72px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-inner h2{color:#fff;margin-bottom:12px}
.cta-inner p{max-width:56ch;color:rgba(255,255,255,.78);font-size:16.5px}
.cta-actions{display:flex;gap:14px;flex:none}

/* 页脚 */
.site-footer{background:var(--surface-2);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16.5px;font-weight:600;color:var(--ink);margin-bottom:14px}
.footer-brand .brand-dot{width:8px;height:8px;background:var(--brand);border-radius:2px}
.footer-about{font-size:15px;color:var(--ink-2);max-width:34ch}
.footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:16px}
.footer-list li{font-size:15px;color:var(--ink-2);padding:7px 0}
.footer-list a{color:var(--ink-2)}
.footer-list a:hover{color:var(--brand)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line);padding:22px 0;font-size:13px;color:var(--ink-3)}

/* 移动端固定条 */
.mobile-bar{display:none}
.mobile-bar-copy{font-size:14px;color:var(--ink-2)}
.mobile-bar .btn{min-height:42px;padding:11px 18px;font-size:14px}

@media (max-width:1023px){
  :root{--pad-section:64px}
  h1{font-size:32px}
  h2{font-size:24px}
  .container{padding:0 24px}
  .hero-grid{grid-template-columns:1fr;gap:32px;padding:24px 0 48px}
  .hero-figure img{aspect-ratio:16/10}
  .overview-grid{grid-template-columns:1fr 1fr;gap:24px 0}
  .overview-item:nth-child(odd){border-left:0;padding-left:0}
  .overview-item{padding-right:20px}
  .cap-layout{grid-template-columns:1fr;gap:32px}
  .anchor-sticky{position:static}
  .anchor-list{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}
  .process-grid{grid-template-columns:1fr 1fr;gap:32px}
  .process-item:nth-child(odd){border-left:0;padding-left:0}
  .deliver-layout,.faq-layout{grid-template-columns:1fr;gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-toggle{display:flex}
  .nav-menu{position:fixed;top:64px;left:0;right:0;bottom:0;display:none;flex-direction:column;align-items:stretch;gap:0;background:var(--surface);padding:8px 24px 32px;overflow-y:auto;border-top:1px solid var(--line)}
  .nav-menu.is-open{display:flex}
  .nav-menu a{padding:18px 2px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line)}
  .nav-menu a::after{display:none}
  .nav-menu a.is-active{color:var(--brand)}
  .nav-menu-cta{display:inline-flex;margin-top:26px}
  .header-cta{display:none}
}
@media (max-width:639px){
  :root{--pad-section:56px;--header-h:64px}
  body{font-size:16.5px}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:17px}
  .container{padding:0 20px}
  .section-head{margin-bottom:32px}
  .hero-lead{font-size:16.5px}
  .overview-grid{grid-template-columns:1fr}
  .overview-item{border-left:0;padding:0 0 18px;border-bottom:1px solid var(--line)}
  .overview-item:last-child{border-bottom:0;padding-bottom:0}
  .anchor-list{grid-template-columns:1fr}
  .cap-points{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .process-item{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:20px}
  .process-item:first-child{border-top:0;padding-top:0}
  .deliver-list li{flex-wrap:wrap;gap:8px}
  .deliver-list .tag{margin-left:36px}
  .cta-actions{flex-direction:column;width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .mobile-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;position:fixed;left:0;right:0;bottom:0;z-index:70;background:var(--surface);border-top:1px solid var(--line);box-shadow:var(--shadow-2);padding:8px 16px;min-height:60px}
  body{padding-bottom:72px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .btn:hover,.link-arrow:hover::after{transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#F6F3EE;
  --surface:#FFFFFF;
  --surface-2:#EFEAE2;
  --ink:#161A18;
  --ink-2:#4A5250;
  --ink-3:#7C857F;
  --line:#E2DCD2;
  --brand:#E1662B;
  --brand-hover:#C4521C;
  --brand-soft:#FBE7D9;
  --accent-2:#1F3A34;
  --accent-2-soft:#E3EBE7;
  --focus:#2E7D6B;
  --radius-card:14px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(22,26,24,.06);
  --shadow-2:0 10px 30px -12px rgba(22,26,24,.16);
  --section-pad:88px;
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0 0 72px;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color 180ms ease,background-color 180ms ease,opacity 180ms ease;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--focus);outline-offset:2px;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:0;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:19px;line-height:1.45;}
p{margin:0 0 1.1em;color:var(--ink-2);}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:var(--font-cn);cursor:pointer;border:none;background:none;}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--section-pad) 0;}
.section--alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--line{border-top:1px solid var(--line);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;line-height:1.6;color:var(--ink-3);letter-spacing:.04em;}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--brand);display:inline-block;}
.lead{font-size:17px;color:var(--ink-2);}
.muted{font-size:13px;line-height:1.6;color:var(--ink-3);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:44px;}
.section-head h2{max-width:640px;}
.section-head .head-note{font-size:13px;color:var(--ink-3);line-height:1.6;max-width:340px;}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow 180ms ease,background-color 180ms ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;transition:height 180ms ease;}
.site-header.is-stuck .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand-dot{width:8px;height:8px;background:var(--brand);display:inline-block;flex:none;border-radius:1px;}
.nav-menu{display:flex;align-items:center;gap:28px;}
.nav-menu a{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:40%;bottom:0;height:2px;background:var(--brand);
  opacity:0;transition:opacity 180ms ease;
}
.nav-menu a:hover{color:var(--ink);}
.nav-menu a:hover::after,.nav-menu a.is-active::after{opacity:1;}
.nav-menu a.is-active{color:var(--ink);font-weight:600;}
.header-cta{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--accent-2);border:1px solid var(--accent-2);border-radius:var(--radius-btn);padding:9px 18px;transition:all 180ms ease;}
.header-cta:hover{background:var(--accent-2-soft);}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:6px;}
.nav-toggle span{display:block;width:22px;height:1.5px;background:var(--ink);transition:transform 180ms ease,opacity 180ms ease;}
.nav-toggle.is-open span:first-child{transform:translateY(3.75px) rotate(45deg);}
.nav-toggle.is-open span:last-child{transform:translateY(-3.75px) rotate(-45deg);}
.mobile-menu{display:none;}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14px;border-radius:var(--radius-btn);padding:14px 26px;min-height:46px;transition:all 180ms ease;}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--accent-2);border:1px solid var(--accent-2);}
.btn-ghost:hover{background:var(--accent-2-soft);}
.btn-light{background:#fff;color:var(--accent-2);}
.btn-light:hover{background:var(--accent-2-soft);}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.65);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:14px;font-weight:600;}
.link-arrow .arw{display:inline-block;transition:transform 180ms ease;}
.link-arrow:hover .arw{transform:translateX(2px);}
.link-arrow:hover{text-decoration:underline;}

/* 徽章 */
.badge{display:inline-flex;align-items:center;font-size:12px;line-height:1.6;padding:5px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-weight:600;}
.badge--green{background:var(--accent-2-soft);color:var(--accent-2);}

/* 面包屑 */
.breadcrumb{padding-top:24px;font-size:13px;color:var(--ink-3);display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink-3);}

/* Hero */
.scene-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.scene-hero__bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;}
.scene-hero__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(225,102,43,.86),rgba(31,58,52,.88));}
.scene-hero__inner{position:relative;z-index:2;padding:76px 0 70px;color:#fff;max-width:760px;}
.scene-hero h1{color:#fff;margin-bottom:18px;}
.scene-hero__note{color:rgba(255,255,255,.86);font-size:17px;margin-bottom:26px;}
.scene-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.scene-tags span{font-size:12px;line-height:1.6;padding:6px 13px;border-radius:999px;background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.28);}
.scene-hero__actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 数据条 */
.stat-bar{background:var(--surface-2);border-bottom:1px solid var(--line);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{padding:26px 24px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:none;}
.stat-value{font-size:28px;font-weight:700;color:var(--brand);line-height:1.2;letter-spacing:-.02em;}
.stat-label{font-size:13px;color:var(--ink-3);line-height:1.6;margin-top:4px;}

/* 砖墙 */
.brick-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:28px;}
.brick{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;display:flex;flex-direction:column;transition:transform 180ms ease,box-shadow 180ms ease;}
.brick:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.brick--wide{grid-column:span 8;}
.brick--narrow{grid-column:span 4;}
.brick__media{position:relative;overflow:hidden;background:var(--surface-2);}
.brick--wide .brick__media{aspect-ratio:16 / 9;}
.brick--narrow .brick__media{aspect-ratio:4 / 3;}
.brick__media img{width:100%;height:100%;object-fit:cover;transition:transform 240ms ease;}
.brick:hover .brick__media img{transform:scale(1.03);}
.brick__index{position:absolute;top:14px;left:14px;font-size:12px;font-weight:600;padding:4px 11px;border-radius:999px;background:var(--brand-soft);color:var(--brand);}
.brick__body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.brick__body h3{color:var(--ink);}
.brick__body p{font-size:16px;color:var(--ink-2);margin:0;}
.brick__meta{margin-top:auto;display:flex;flex-wrap:wrap;gap:8px;padding-top:12px;border-top:1px solid var(--line);}
.brick__meta span{font-size:12px;color:var(--ink-3);line-height:1.6;}

/* 流程 */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);}
.flow-item{padding:32px 24px 28px 0;border-right:1px solid var(--line);position:relative;}
.flow-item:last-child{border-right:none;padding-right:0;}
.flow-item:not(:first-child){padding-left:24px;}
.flow-num{font-size:13px;color:var(--brand);font-weight:700;letter-spacing:.06em;margin-bottom:14px;}
.flow-item h3{margin-bottom:10px;}
.flow-item p{font-size:15px;margin:0;}

/* 适配清单 */
.fit-wrap{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;}
.fit-row{display:flex;justify-content:space-between;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);transition:background-color 180ms ease;}
.fit-row:hover{background:var(--surface-2);}
.fit-key{font-size:13px;color:var(--ink-3);line-height:1.6;flex:none;min-width:110px;}
.fit-val{font-size:15px;color:var(--ink);text-align:right;}

/* 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;text-align:left;padding:22px 0;font-size:15px;font-weight:600;color:var(--ink);transition:color 180ms ease;}
.faq-q:hover{color:var(--brand);}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-sign{position:relative;width:16px;height:16px;flex:none;}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:currentColor;}
.faq-sign::before{left:0;right:0;top:7.25px;height:1.5px;}
.faq-sign::after{top:0;bottom:0;left:7.25px;width:1.5px;transition:transform 180ms ease,opacity 180ms ease;}
.faq-item.is-open .faq-sign::after{transform:scaleY(0);opacity:0;}
.faq-a{overflow:hidden;height:0;transition:height 180ms ease;}
.faq-a__inner{padding:0 0 24px;font-size:16px;line-height:1.75;color:var(--ink-2);max-width:760px;}

/* CTA */
.cta-band{background:var(--accent-2);color:#fff;}
.cta-band__inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;padding:64px 0;}
.cta-band h2{color:#fff;max-width:560px;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.78);max-width:560px;margin:0;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 页脚 */
.site-footer{background:var(--surface-2);border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink);margin-bottom:14px;}
.footer-about{font-size:14px;color:var(--ink-2);max-width:300px;margin:0;}
.footer-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:16px;}
.footer-list li{font-size:14px;color:var(--ink-2);padding:7px 0;line-height:1.7;}
.footer-list a{color:var(--ink-2);}
.footer-list a:hover{color:var(--brand);}
.footer-bottom{margin-top:48px;border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:var(--ink-3);}

/* 底部固定转化条 */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  align-items:center;justify-content:space-between;gap:14px;
  background:var(--surface);border-top:1px solid var(--line);box-shadow:var(--shadow-2);
  padding:10px 20px;min-height:60px;
}
.mobile-bar__text{font-size:14px;color:var(--ink-2);line-height:1.4;}
.mobile-bar .btn{padding:11px 18px;min-height:44px;font-size:13px;}

/* 返回顶部 */
.to-top{
  position:fixed;right:28px;bottom:28px;z-index:55;
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--surface);
  color:var(--ink-2);font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-1);opacity:0;visibility:hidden;transition:all 180ms ease;
}
.to-top.is-show{opacity:1;visibility:visible;}
.to-top:hover{color:var(--brand);border-color:var(--brand);}

@media (max-width:1439px){
  .container{padding:0 32px;}
}
@media (max-width:1023px){
  :root{--section-pad:64px;}
  body{font-size:16.5px;}
  h1{font-size:32px;}
  h2{font-size:24px;}
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .header-cta{display:none;}
  .mobile-menu{
    display:block;position:fixed;top:76px;left:0;right:0;bottom:0;background:var(--surface);
    z-index:59;transform:translateY(-8px);opacity:0;visibility:hidden;transition:all 180ms ease;
    overflow-y:auto;padding:0 0 40px;
  }
  .mobile-menu.is-open{transform:translateY(0);opacity:1;visibility:visible;}
  .mobile-menu a{display:block;padding:20px 24px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink-2);}
  .mobile-menu a.is-active{color:var(--brand);font-weight:600;}
  .mobile-menu .menu-cta{padding:24px;border-bottom:none;}
  .mobile-menu .menu-cta .btn{width:100%;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:none;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
  .brick--wide{grid-column:span 12;}
  .brick--narrow{grid-column:span 6;}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .flow-item{border-bottom:1px solid var(--line);}
  .flow-item:nth-child(2){border-right:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .scene-hero__inner{padding:60px 0 56px;}
  .cta-band__inner{padding:56px 0;}
}
@media (max-width:768px){
  .fit-wrap{grid-template-columns:1fr;}
  .flow-grid{grid-template-columns:1fr;}
  .flow-item{border-right:none;padding:26px 0;}
  .flow-item:not(:first-child){padding-left:0;}
  .brick--narrow{grid-column:span 12;}
  .cta-band__actions .btn{width:100%;}
  .hero-actions{width:100%;}
}
@media (max-width:639px){
  :root{--section-pad:56px;}
  .container{padding:0 20px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:17px;}
  .site-header .header-inner{height:62px;}
  .mobile-menu{top:62px;}
  .brand{font-size:15px;}
  .scene-hero__inner{padding:52px 0 48px;}
  .scene-hero__actions .btn{width:100%;}
  .stat-item{padding:20px 18px;}
  .stat-value{font-size:24px;}
  .brick-grid{gap:18px;}
  .section-head{margin-bottom:32px;}
  .footer-grid{grid-template-columns:1fr;}
  .mobile-bar{display:flex;}
  .to-top{right:18px;bottom:82px;}
  .fit-val{text-align:left;}
  .fit-row{flex-direction:column;gap:4px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
  .brick:hover{transform:none;}
  .btn-primary:hover{transform:none;}
}

/* roulang page: category4 */
:root{
  --bg:#F6F3EE;
  --surface:#FFFFFF;
  --surface-2:#EFEAE2;
  --ink:#161A18;
  --ink-2:#4A5250;
  --ink-3:#7C857F;
  --line:#E2DCD2;
  --brand:#E1662B;
  --brand-hover:#C4521C;
  --brand-soft:#FBE7D9;
  --accent-2:#1F3A34;
  --accent-2-soft:#E3EBE7;
  --focus:#2E7D6B;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(22,26,24,.06);
  --shadow-2:0 10px 30px -12px rgba(22,26,24,.16);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:17px;
  line-height:1.75;
  padding-bottom:72px;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color 180ms ease,background-color 180ms ease,border-color 180ms ease,transform 180ms ease,box-shadow 180ms ease;}
button,input{font:inherit;color:inherit;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--ink);}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:46px;padding:14px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;line-height:1.2;border:1px solid transparent;
  cursor:pointer;text-align:center;transition:all 180ms ease;
}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand);}
.btn-primary:hover{background:var(--brand-hover);border-color:var(--brand-hover);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--accent-2);border-color:var(--accent-2);}
.btn-ghost:hover{background:var(--accent-2-soft);transform:translateY(-1px);}
.btn-sm{min-height:40px;padding:10px 20px;font-size:14px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand);
  font-size:15px;font-weight:500;border-bottom:1px solid transparent;
}
.link-arrow::after{content:"→";font-size:14px;transition:transform 180ms ease;}
.link-arrow:hover{border-bottom-color:var(--brand);}
.link-arrow:hover::after{transform:translateX(2px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-block;padding:4px 12px;border-radius:999px;
  font-size:12px;line-height:1.6;font-weight:500;
}
.badge-brand{background:var(--brand-soft);color:var(--brand);}
.badge-soft{background:var(--accent-2-soft);color:var(--accent-2);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--surface);
  border-bottom:1px solid var(--line);transition:box-shadow 180ms ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:76px;transition:min-height 180ms ease;
}
.site-header.is-scrolled .header-inner{min-height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:600;color:var(--ink);}
.brand-dot{width:8px;height:8px;background:var(--brand);display:inline-block;flex:0 0 auto;}
.brand:hover{color:var(--brand);}
.nav-menu{display:flex;align-items:center;gap:28px;}
.nav-menu a{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--brand);transition:width 180ms ease;
}
.nav-menu a:hover{color:var(--ink);}
.nav-menu a:hover::after{width:60%;}
.nav-menu a.is-active{color:var(--ink);font-weight:500;}
.nav-menu a.is-active::after{width:60%;}
.header-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:transparent;
  border-radius:var(--radius-btn);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:6px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);transition:transform 180ms ease;}
.mobile-nav{display:none;border-top:1px solid var(--line);background:var(--surface);}
.mobile-nav a{
  display:block;padding:16px 32px;font-size:15px;color:var(--ink-2);border-bottom:1px solid var(--line);
}
.mobile-nav a.is-active{color:var(--brand);font-weight:500;}
.mobile-nav a:hover{background:var(--surface-2);}
.mobile-nav .mobile-cta{padding:20px 32px 24px;border-bottom:none;}
.mobile-nav .mobile-cta .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);padding:24px 0 0;
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .current{color:var(--ink-3);}

/* ---------- Hero ---------- */
.page-hero{padding:28px 0 0;}
.hero-panel{
  display:grid;grid-template-columns:1.15fr 1fr;gap:56px;align-items:center;
  padding:48px 0 64px;
}
.page-hero h1{
  font-size:40px;line-height:1.25;margin:18px 0 16px;
}
.hero-lead{font-size:17px;color:var(--ink-2);max-width:32em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-media{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-2);}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;background:rgba(31,58,52,.12);
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:0;margin-top:28px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.hero-meta div{
  flex:1 1 0;min-width:150px;padding:16px 20px;border-right:1px solid var(--line);
}
.hero-meta div:last-child{border-right:none;}
.hero-meta .k{font-size:13px;color:var(--ink-3);display:block;}
.hero-meta .v{font-size:15px;color:var(--ink);font-weight:500;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:30px;line-height:1.3;margin-bottom:14px;}
.section-head p{color:var(--ink-2);font-size:17px;}
.eyebrow{font-size:13px;color:var(--ink-3);letter-spacing:.08em;display:block;margin-bottom:10px;}

/* ---------- 案例条目 ---------- */
.case-item{padding:56px 0;border-bottom:1px solid var(--line);}
.case-item:last-child{border-bottom:none;padding-bottom:0;}
.case-item:first-child{padding-top:0;}
.case-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.case-media{position:relative;border-radius:var(--radius-card);overflow:hidden;background:var(--surface-2);}
.case-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 240ms ease;}
.case-item:hover .case-media img{transform:scale(1.02);}
.case-index{
  position:absolute;top:16px;left:16px;background:rgba(255,255,255,.92);
  color:var(--brand);font-size:13px;font-weight:600;padding:5px 12px;border-radius:999px;
  font-variant-numeric:tabular-nums;
}
.case-body h3{font-size:22px;line-height:1.45;margin:14px 0 12px;}
.case-body p{color:var(--ink-2);font-size:16.5px;}
.case-item.is-reverse .case-grid .case-media{order:2;}
.case-item.is-reverse .case-grid .case-body{order:1;}
.stat-row{display:flex;flex-wrap:wrap;gap:32px;margin:24px 0;padding-top:20px;border-top:1px solid var(--line);}
.stat-row li{min-width:110px;}
.stat-num{display:block;font-size:28px;font-weight:600;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2;}
.stat-label{display:block;font-size:13px;color:var(--ink-3);margin-top:4px;}

/* ---------- 数据留痕列表 ---------- */
.trace-list{border-top:1px solid var(--line);}
.trace-list li{
  display:grid;grid-template-columns:180px 1fr 160px;gap:24px;align-items:center;
  padding:24px 16px;border-bottom:1px solid var(--line);transition:background-color 180ms ease,padding 180ms ease;
}
.trace-list li:hover{background:var(--surface);padding-left:24px;}
.trace-list .trace-name{font-size:16px;font-weight:500;}
.trace-list .trace-desc{font-size:15px;color:var(--ink-2);}
.trace-list .trace-tag{justify-self:end;}

/* ---------- 四步流程 ---------- */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);}
.step{padding:32px 28px 8px;border-right:1px solid var(--line);}
.step:last-child{border-right:none;}
.step .step-no{font-size:13px;color:var(--brand);font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:.06em;}
.step h3{font-size:18px;margin:12px 0 10px;}
.step p{font-size:15px;color:var(--ink-2);}

/* ---------- 继续查看 ---------- */
.entry-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.entry{
  display:block;padding:26px 24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.entry:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-soft);}
.entry .entry-title{font-size:18px;font-weight:600;margin:12px 0 8px;transition:color 180ms ease;}
.entry:hover .entry-title{color:var(--brand);}
.entry p{font-size:15px;color:var(--ink-2);}

/* ---------- 底部转化 ---------- */
.cta-band{background:var(--accent-2);color:#fff;padding:72px 0;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;}
.cta-band h2{color:#fff;font-size:28px;line-height:1.35;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.78);max-width:36em;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5);background:transparent;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--surface-2);border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:600;margin-bottom:14px;}
.footer-about{font-size:14px;color:var(--ink-2);max-width:26em;}
.footer-title{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-list li{margin-bottom:10px;}
.footer-list a,.footer-list li{font-size:14px;color:var(--ink-2);}
.footer-list a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-3);
}

/* ---------- 移动固定转化条 ---------- */
.fixed-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  align-items:center;justify-content:space-between;gap:14px;
  padding:10px 20px;background:var(--surface);border-top:1px solid var(--line);box-shadow:var(--shadow-2);
}
.fixed-bar .bar-text{font-size:14px;color:var(--ink-2);}
.fixed-bar .btn{min-height:44px;padding:10px 18px;font-size:14px;}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:40px;height:40px;z-index:65;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface);border:1px solid var(--line);border-radius:50%;
  font-size:15px;color:var(--ink-2);opacity:0;pointer-events:none;transition:opacity 180ms ease,color 180ms ease,border-color 180ms ease;
}
.to-top.is-visible{opacity:1;pointer-events:auto;}
.to-top:hover{color:var(--brand);border-color:var(--brand);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn{display:none;}
  .mobile-nav.is-open{display:block;}
  .page-hero h1{font-size:32px;}
  .hero-panel{grid-template-columns:1fr;gap:36px;padding:36px 0 48px;}
  .case-grid{grid-template-columns:1fr;gap:28px;}
  .case-item.is-reverse .case-grid .case-media{order:1;}
  .case-item.is-reverse .case-grid .case-body{order:2;}
  .step-grid{grid-template-columns:repeat(2,1fr);}
  .step:nth-child(2){border-right:none;}
  .step{border-bottom:1px solid var(--line);}
  .entry-list{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
  .section-head h2{font-size:24px;}
  .cta-band h2{font-size:23px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  body{font-size:16.5px;}
  .page-hero h1{font-size:28px;}
  .hero-meta div{flex:1 1 50%;border-right:none;border-bottom:1px solid var(--line);}
  .hero-meta div:nth-child(odd){border-right:1px solid var(--line);}
  .hero-meta div:last-child{border-bottom:none;}
  .trace-list li{grid-template-columns:1fr;gap:8px;padding:20px 8px;}
  .trace-list .trace-tag{justify-self:start;}
  .step-grid{grid-template-columns:1fr;}
  .step{border-right:none;padding:26px 8px;}
  .entry-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .section{padding:56px 0;}
  .case-item{padding:40px 0;}
  .fixed-bar{display:flex;}
  .to-top{bottom:80px;right:16px;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:519px){
  .hero-actions .btn{width:100%;}
  .stat-row{gap:20px;}
  .stat-row li{min-width:90px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .case-item:hover .case-media img{transform:none;}
  .entry:hover{transform:none;}
}

/* roulang page: category5 */
:root{
  --bg:#F6F3EE;
  --surface:#FFFFFF;
  --surface-2:#EFEAE2;
  --ink:#161A18;
  --ink-2:#4A5250;
  --ink-3:#7C857F;
  --line:#E2DCD2;
  --brand:#E1662B;
  --brand-hover:#C4521C;
  --brand-soft:#FBE7D9;
  --accent-2:#1F3A34;
  --accent-2-soft:#E3EBE7;
  --focus:#2E7D6B;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(22,26,24,.06);
  --shadow-2:0 10px 30px -12px rgba(22,26,24,.16);
  --font:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,opacity .18s ease,transform .18s ease;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:19px;line-height:1.45;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:13px 26px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;line-height:1;cursor:pointer;border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--accent-2);border-color:var(--accent-2);}
.btn-ghost:hover{background:var(--accent-2-soft);}
.btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-light:hover{background:rgba(255,255,255,.14);border-color:#fff;}
.btn-sm{min-height:40px;padding:10px 18px;font-size:13.5px;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:14.5px;font-weight:600;}
.link-arrow::after{content:"→";font-size:12px;transition:transform .18s ease;}
.link-arrow:hover{color:var(--brand-hover);}
.link-arrow:hover::after{transform:translateX(2px);}

/* 徽章与标签 */
.tag{
  display:inline-flex;align-items:center;
  padding:5px 13px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;line-height:1.4;
}
.tag-plain{background:var(--accent-2-soft);color:var(--accent-2);}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;gap:28px;height:76px;transition:height .18s ease;}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--brand);display:inline-block;}
.brand-name{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:0;}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-menu a{position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:0;width:60%;height:2px;
  background:var(--brand);transform:translateX(-50%) scaleX(0);transform-origin:center;
  transition:transform .18s ease;
}
.nav-menu a:hover::after{transform:translateX(-50%) scaleX(.6);}
.nav-menu a.is-active{color:var(--ink);}
.nav-menu a.is-active::after{transform:translateX(-50%) scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;background:transparent;border:1px solid var(--line);
  border-radius:var(--radius-btn);cursor:pointer;padding:0;position:relative;
}
.nav-toggle span{position:absolute;left:12px;width:20px;height:1.5px;background:var(--ink);transition:transform .18s ease,opacity .18s ease;}
.nav-toggle span:nth-child(1){top:19px;}
.nav-toggle span:nth-child(2){top:25px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(3px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){transform:translateY(-3px) rotate(-45deg);}
.mobile-nav{display:none;background:var(--surface);border-top:1px solid var(--line);}
.mobile-nav.is-open{display:block;}
.mobile-nav a{display:block;padding:18px 20px;font-size:16px;color:var(--ink-2);border-bottom:1px solid var(--line);}
.mobile-nav a.is-active{color:var(--brand);}
.mobile-nav .mobile-nav-cta{padding:18px 20px 24px;}
.mobile-nav .mobile-nav-cta .btn{width:100%;}

/* 首屏 */
.hero-support{
  position:relative;
  background-image:linear-gradient(135deg,rgba(225,102,43,.86),rgba(31,58,52,.9)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  color:#fff;
  padding:96px 0 88px;
}
.hero-support h1{color:#fff;max-width:820px;}
.hero-support .hero-sub{margin-top:18px;font-size:18px;color:rgba(255,255,255,.9);max-width:640px;}
.hero-support .hero-actions{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap;}
.breadcrumb{display:flex;gap:10px;align-items:center;font-size:13px;color:rgba(255,255,255,.75);margin-bottom:22px;}
.breadcrumb a{color:rgba(255,255,255,.85);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb span.sep{opacity:.6;}

/* 板块 */
.section{padding:88px 0;}
.section-alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-white{background:var(--surface);border-top:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{margin-bottom:14px;}
.section-head .lead{color:var(--ink-2);font-size:17px;}
.eyebrow{display:inline-block;font-size:13px;color:var(--ink-3);letter-spacing:.06em;margin-bottom:12px;}

/* 介绍图文 */
.intro-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.intro-copy h2{margin-bottom:16px;}
.intro-copy p{color:var(--ink-2);}
.intro-points{margin-top:26px;border-top:1px solid var(--line);}
.intro-points li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink-2);}
.intro-points li::before{content:"";width:20px;height:1px;background:var(--brand);margin-top:14px;flex:0 0 auto;}
.intro-media{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-2);}
.intro-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}

/* 规格表 */
.spec-table{border-top:1px solid var(--line);}
.spec-row{display:grid;grid-template-columns:280px 1fr;gap:28px;padding:24px 4px;border-bottom:1px solid var(--line);transition:background-color .18s ease;}
.spec-row:hover{background:var(--surface-2);}
.spec-key{color:var(--ink-3);font-size:15px;}
.spec-val{color:var(--ink);font-size:16.5px;}
.spec-val strong{color:var(--brand);font-weight:600;}

/* 流程 */
.flow-list{border-top:1px solid var(--line);}
.flow-item{display:grid;grid-template-columns:96px 1fr;gap:28px;padding:26px 4px;border-bottom:1px solid var(--line);transition:background-color .18s ease;}
.flow-item:hover{background:var(--surface);}
.flow-num{font-size:28px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.2;}
.flow-item h3{margin-bottom:8px;}
.flow-item p{color:var(--ink-2);font-size:16px;margin-bottom:0;}

/* FAQ + 表单 */
.support-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start;}
.faq-accordion.accordion{background:transparent;border:0;margin:0;}
.faq-accordion .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;}
.faq-accordion .accordion-title{
  display:block;position:relative;border:0;background:transparent;
  padding:22px 48px 22px 0;font-size:15.5px;font-weight:600;color:var(--ink);
  transition:color .18s ease;
}
.faq-accordion .accordion-title:hover,.faq-accordion .accordion-title:focus{background:transparent;color:var(--brand);}
.faq-accordion .accordion-title::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--ink-3);transition:transform .18s ease,color .18s ease;
}
.faq-accordion .accordion-item.is-active .accordion-title{color:var(--brand);}
.faq-accordion .accordion-item.is-active .accordion-title::after{content:"−";color:var(--brand);transform:translateY(-50%) rotate(180deg);}
.faq-accordion .accordion-content{
  border:0;background:transparent;padding:0 48px 24px 0;
  font-size:16px;color:var(--ink-2);line-height:1.75;
}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);position:sticky;top:100px;
}
.form-card h3{margin-bottom:8px;}
.form-card .form-note{font-size:14px;color:var(--ink-3);margin-bottom:22px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;min-height:46px;padding:12px 14px;
  border:1px solid var(--line);border-radius:10px;background:var(--surface);
  color:var(--ink);font-size:15.5px;line-height:1.5;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{min-height:120px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3);}
.field input:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(46,125,107,.25);outline:none;}
.form-card .btn{width:100%;}
.form-msg{margin-top:16px;font-size:13px;line-height:1.6;}
.form-msg.warn{color:var(--brand);}
.form-msg.ok{color:var(--accent-2);}

/* 深色 CTA */
.cta-block{background:var(--accent-2);color:#fff;padding:72px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-block h2{color:#fff;font-size:28px;margin-bottom:12px;}
.cta-block p{color:rgba(255,255,255,.82);max-width:560px;margin-bottom:0;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{background:var(--accent-2);color:rgba(255,255,255,.82);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:14px;}
.footer-about{font-size:14px;color:rgba(255,255,255,.7);max-width:280px;margin:0;}
.footer-title{color:#fff;font-size:14.5px;font-weight:600;margin-bottom:16px;}
.footer-list li{margin-bottom:10px;font-size:14px;color:rgba(255,255,255,.72);}
.footer-list a{color:rgba(255,255,255,.72);}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.16);padding:22px 0 26px;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:28px;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-2);
  display:none;align-items:center;justify-content:center;font-size:15px;cursor:pointer;
  box-shadow:var(--shadow-1);z-index:70;
}
.to-top.is-visible{display:flex;}
.to-top:hover{color:var(--brand);border-color:var(--brand);}

/* 移动端底部转化条 */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:var(--surface);border-top:1px solid var(--line);box-shadow:var(--shadow-2);
  padding:10px 16px;align-items:center;justify-content:space-between;gap:12px;min-height:60px;
}
.mobile-bar span{font-size:14px;color:var(--ink-2);}

@media (max-width:1023px){
  h1{font-size:32px;}
  h2{font-size:26px;}
  .intro-grid,.support-grid{grid-template-columns:1fr;gap:40px;}
  .form-card{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .spec-row{grid-template-columns:220px 1fr;}
}
@media (max-width:900px){
  .nav-menu{display:none;}
  .nav-toggle{display:block;}
  .header-actions .btn-ghost{display:none;}
}
@media (max-width:767px){
  body{font-size:16.5px;padding-bottom:76px;}
  .container{padding:0 20px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:17px;}
  .section{padding:56px 0;}
  .hero-support{padding:64px 0 60px;}
  .hero-support .hero-sub{font-size:16.5px;}
  .hero-support .hero-actions .btn{width:100%;}
  .brand-name{font-size:15px;}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:20px 4px;}
  .flow-item{grid-template-columns:64px 1fr;gap:18px;padding:22px 4px;}
  .flow-num{font-size:24px;}
  .faq-accordion .accordion-content{padding-right:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .mobile-bar{display:flex;}
  .to-top{bottom:80px;right:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .btn:hover{transform:none;}
  .link-arrow:hover::after{transform:none;}
}