/* roulang page: index */
:root{
  --brand:#C8402B;
  --brand-dark:#A6321F;
  --brand-soft:rgba(200,64,43,.08);
  --deep:#14342B;
  --ink:#1C1F1D;
  --lime:#B6FF3C;
  --bg:#FAF8F5;
  --bg-alt:#F2EFEA;
  --white:#FFFFFF;
  --text:#3A3A38;
  --muted:#7A7873;
  --line:#E6E2DB;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:999px;
  --shadow-1:0 1px 2px rgba(28,31,29,.06);
  --shadow-2:0 12px 28px rgba(28,31,29,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"DIN Alternate","Bebas Neue","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:96px 0;}
.section--alt{background:var(--bg-alt);}
.section--tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;letter-spacing:.06em;
  margin-bottom:16px;
}
.eyebrow--light{background:rgba(182,255,60,.16);color:var(--lime);}
h1{
  font-size:clamp(30px,4.2vw,54px);
  font-weight:800;line-height:1.15;letter-spacing:-.02em;color:var(--ink);
}
h2{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--ink);
}
h3{font-size:19px;font-weight:600;line-height:1.4;color:var(--ink);}
.lead{font-size:17px;color:var(--muted);max-width:70ch;}
.section-head p{margin-top:14px;font-size:16px;color:var(--muted);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:1;
  border:1.5px solid transparent;cursor:pointer;
  transition:background-color 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-light{background:#fff;color:var(--deep);}
.btn-light:hover{background:#F1EEE8;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);transform:translateY(-2px);}
.btn-sm{padding:11px 22px;font-size:15px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:15px;position:relative;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;
  background:var(--brand);transition:width 180ms var(--ease);
}
.link-arrow:hover::after{width:100%;}
.link-arrow .arw{transition:transform 220ms var(--ease);}
.link-arrow:hover .arw{transform:translateX(4px);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,248,245,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:height 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease),background-color 240ms var(--ease);
}
.site-header.is-stuck{
  border-bottom-color:var(--line);
  box-shadow:0 4px 18px rgba(28,31,29,.07);
}
.header-inner{
  display:flex;align-items:center;gap:20px;height:76px;
  transition:height 240ms var(--ease);
}
.site-header.is-stuck .header-inner{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:26px;height:26px;border-radius:8px;
  background:linear-gradient(135deg,var(--brand),#E2703F);
  position:relative;flex:0 0 auto;
}
.logo-mark::after{
  content:"";position:absolute;inset:7px;
  border:2px solid #fff;border-radius:50%;border-right-color:transparent;
  transform:rotate(-35deg);
}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--ink);white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--brand);}

.nav-search{
  position:relative;flex:1 1 auto;max-width:440px;min-width:180px;
}
.nav-search svg{
  position:absolute;left:18px;top:50%;transform:translateY(-50%);
  width:17px;height:17px;stroke:var(--muted);fill:none;stroke-width:2;
  pointer-events:none;
}
.nav-search input{
  width:100%;height:44px;border-radius:999px;
  border:1.5px solid var(--line);background:var(--white);
  padding:0 18px 0 44px;font-size:15px;color:var(--text);
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),background-color 200ms var(--ease);
}
.nav-search input::placeholder{color:#9C9A94;}
.nav-search input:hover{border-color:#D6D1C7;}
.nav-search input:focus{
  outline:none;border-color:var(--brand);background:var(--brand-soft);
  box-shadow:0 0 0 4px rgba(200,64,43,.10);
}

.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:var(--text);
  padding:6px 0;transition:color 180ms var(--ease);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand);border-radius:2px;transition:width 200ms var(--ease);
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{width:100%;}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{width:100%;}

.header-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1.5px solid var(--line);background:var(--white);
  align-items:center;justify-content:center;cursor:pointer;flex:0 0 auto;
  transition:border-color 200ms var(--ease),background-color 200ms var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-soft);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform 220ms var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;background:var(--bg);
  padding:20px;display:flex;flex-direction:column;gap:20px;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity 240ms var(--ease),transform 240ms var(--ease),visibility 240ms;
  overflow-y:auto;
}
.mobile-drawer.open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1.5px solid var(--line);
  background:var(--white);font-size:20px;line-height:1;color:var(--ink);cursor:pointer;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.drawer-search{position:relative;}
.drawer-search input{
  width:100%;height:48px;border-radius:999px;border:1.5px solid var(--line);
  background:var(--white);padding:0 18px 0 44px;font-size:15px;
}
.drawer-search svg{
  position:absolute;left:18px;top:50%;transform:translateY(-50%);
  width:17px;height:17px;stroke:var(--muted);fill:none;stroke-width:2;
}
.drawer-nav{display:flex;flex-direction:column;gap:2px;border-top:1px solid var(--line);padding-top:12px;}
.drawer-nav a{
  padding:15px 4px;font-size:17px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;
  transition:color 180ms var(--ease),padding-left 180ms var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--brand);padding-left:8px;}

/* ============ Hero ============ */
.hero{padding:84px 0 96px;position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-140px;right:-160px;width:520px;height:520px;
  border-radius:50%;background:radial-gradient(circle,rgba(200,64,43,.10),transparent 68%);
  pointer-events:none;
}
.hero-grid{
  display:grid;grid-template-columns:55% 45%;gap:48px;align-items:center;
  position:relative;
}
.hero-title{margin-bottom:20px;}
.hero-title .hl{color:var(--brand);}
.hero-sub{
  font-size:18px;line-height:1.7;color:var(--muted);max-width:34ch;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px;}
.hero-stats{
  display:flex;gap:36px;flex-wrap:wrap;
  padding-top:26px;border-top:1px solid var(--line);
}
.hero-stat{min-width:120px;}
.hero-stat b{
  display:block;font-family:var(--font-num);font-size:30px;font-weight:700;
  line-height:1.1;color:var(--ink);letter-spacing:-.01em;
}
.hero-stat span{font-size:13px;color:var(--muted);letter-spacing:.04em;}

.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3.2;object-fit:cover;
  border-radius:var(--radius-card);border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.hero-visual::after{
  content:"";position:absolute;inset:auto -14px -14px auto;width:96px;height:96px;
  border-radius:18px;border:2px dashed rgba(200,64,43,.35);
  z-index:-1;
}
.hero-badge{
  position:absolute;left:-18px;bottom:26px;
  background:var(--white);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-2);padding:14px 18px;display:flex;align-items:center;gap:12px;
}
.hero-badge b{font-family:var(--font-num);font-size:24px;color:var(--brand);line-height:1;}
.hero-badge span{font-size:13px;color:var(--muted);line-height:1.4;}
.hero-stripe{
  position:absolute;top:22px;right:-10px;width:64px;height:10px;border-radius:6px;
  background:repeating-linear-gradient(45deg,var(--lime) 0 8px,transparent 8px 16px);
  opacity:.85;
}

/* ============ 三步流程 ============ */
.steps{
  display:grid;grid-template-columns:repeat(3,1fr);gap:40px;
  margin-top:52px;
}
.step{position:relative;padding-right:20px;}
.step-num{
  font-family:var(--font-num);font-size:clamp(40px,5vw,56px);font-weight:700;
  line-height:1;color:var(--brand);letter-spacing:-.02em;margin-bottom:14px;
}
.step h3{margin-bottom:8px;}
.step p{font-size:15px;color:var(--muted);max-width:32ch;}
.step:not(:last-child)::after{
  content:"";position:absolute;top:26px;right:-22px;width:38px;
  border-top:2px dashed var(--line);
}
.step-foot{margin-top:44px;}

/* ============ 统计条 ============ */
.stat-band{
  background:var(--deep);border-radius:24px;padding:52px 40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
}
.stat-item{text-align:center;border-right:1px solid rgba(255,255,255,.12);}
.stat-item:last-child{border-right:none;}
.stat-num{
  font-family:var(--font-num);font-size:clamp(34px,4vw,46px);font-weight:700;
  color:var(--lime);line-height:1;letter-spacing:-.01em;
}
.stat-label{display:block;margin-top:12px;font-size:14px;color:rgba(255,255,255,.72);}

/* ============ 案例卡片 ============ */
.case-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px;
}
.case-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-2);border-color:var(--brand);}
.case-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.case-body{padding:22px 22px 24px;}
.case-body h3{margin:12px 0 8px;}
.case-body p{font-size:15px;color:var(--muted);}
.badge{
  display:inline-block;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:var(--brand-soft);color:var(--brand);
}
.badge--lime{background:rgba(182,255,60,.22);color:#3F5B12;}
.badge--deep{background:rgba(20,52,43,.09);color:var(--deep);}

/* ============ 最新信息（CMS） ============ */
.news-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:36px;flex-wrap:wrap;
}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.news-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand);}
.news-card__title{font-size:19px;font-weight:600;line-height:1.45;color:var(--ink);}
.news-card__desc{
  font-size:15px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.news-card__meta .arw{color:var(--brand);font-weight:700;transition:transform 220ms var(--ease);}
.news-card:hover .news-card__meta .arw{transform:translateX(4px);}
.news-grid > .news-card:first-child{
  grid-column:1 / -1;background:var(--deep);border-color:transparent;padding:34px;
}
.news-grid > .news-card:first-child .news-card__title{font-size:24px;color:#fff;}
.news-grid > .news-card:first-child .news-card__desc{color:rgba(255,255,255,.74);-webkit-line-clamp:3;}
.news-grid > .news-card:first-child .news-card__meta{border-top-color:rgba(255,255,255,.16);color:rgba(255,255,255,.7);}
.news-grid > .news-card:first-child .badge{background:rgba(182,255,60,.18);color:var(--lime);}
.news-grid > .news-card:first-child .arw{color:var(--lime);}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--white);
  padding:64px 24px;text-align:center;
}
.news-empty svg{width:38px;height:38px;stroke:var(--brand);fill:none;stroke-width:1.6;margin:0 auto 16px;}
.news-empty p{font-size:16px;color:var(--muted);margin-bottom:18px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{
  background:var(--white);border:1px solid var(--line);border-radius:14px;
  margin-bottom:14px;overflow:hidden;transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.faq-item.open{border-color:var(--brand);box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:none;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--ink);text-align:left;
  border-left:3px solid transparent;
  transition:border-color 220ms var(--ease),color 220ms var(--ease);
}
.faq-item.open .faq-q{border-left-color:var(--brand);color:var(--brand);}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  width:20px;height:20px;flex:0 0 auto;position:relative;
  transition:transform 260ms var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-icon::before{top:9px;left:0;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;transition:opacity 220ms var(--ease);}
.faq-item.open .faq-icon{transform:rotate(180deg);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 260ms var(--ease);
}
.faq-a-inner{
  padding:0 22px 22px 25px;font-size:15px;line-height:1.9;color:var(--muted);
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;border-radius:24px;overflow:hidden;
  background-color:var(--deep);color:#fff;
  padding:64px 48px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.16;mix-blend-mode:luminosity;
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;max-width:20ch;}
.cta-inner p{margin-top:12px;color:rgba(255,255,255,.74);font-size:16px;max-width:44ch;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-guards{
  position:relative;display:flex;gap:32px;flex-wrap:wrap;
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.16);
}
.cta-guards span{font-size:14px;color:rgba(255,255,255,.78);display:inline-flex;align-items:center;gap:8px;}
.cta-guards span::before{
  content:"";width:8px;height:8px;border-radius:50%;background:var(--lime);
}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:#fff;padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.68);max-width:34ch;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{
  font-size:14.5px;color:rgba(255,255,255,.68);
  transition:color 200ms var(--ease),padding-left 200ms var(--ease);
}
.footer-col a:hover{color:var(--lime);padding-left:4px;}
.footer-col p{font-size:14.5px;color:rgba(255,255,255,.68);line-height:1.9;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.in{opacity:1;transform:translateY(0);transition:opacity 320ms var(--ease),transform 320ms var(--ease);}

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

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .header-inner{gap:14px;}
  .nav-search{max-width:300px;}
  .main-nav{gap:18px;}
  .hero{padding:64px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{order:2;}
  .hero-visual img{aspect-ratio:16/10;}
  .hero-sub{max-width:none;}
  .section{padding:72px 0;}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:32px 20px;padding:44px 28px;}
  .stat-item:nth-child(2){border-right:none;}
  .case-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr;gap:0;}
  .step{padding:0 0 28px 34px;border-left:2px dashed var(--line);}
  .step:last-child{border-left-color:transparent;}
  .step:not(:last-child)::after{display:none;}
  .step-num{font-size:38px;margin-bottom:8px;}
  .step::before{
    content:"";position:absolute;left:-7px;top:12px;width:12px;height:12px;
    border-radius:50%;background:var(--brand);border:3px solid var(--bg);
  }
  .section--alt .step::before{border-color:var(--bg-alt);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  .main-nav,.header-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-search{max-width:none;}
  .header-inner{height:66px;}
  .site-header.is-stuck .header-inner{height:60px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .news-grid{grid-template-columns:1fr;}
  .case-grid{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:repeat(2,1fr);padding:36px 20px;border-radius:18px;}
  .stat-item{border-right:none;}
  .cta-band{padding:44px 24px;border-radius:18px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .hero-actions{width:100%;}
  .hero-stats{gap:20px;}
  .hero-stat{flex:1 1 42%;min-width:0;}
  .hero-badge{left:12px;bottom:12px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  h1{font-size:29px;}
  .hero{padding:44px 0 56px;}
  .hero-stat b{font-size:24px;}
  .logo-text{font-size:17px;}
  .stat-num{font-size:30px;}
  .news-grid > .news-card:first-child{padding:24px;}
  .news-grid > .news-card:first-child .news-card__title{font-size:20px;}
}

/* roulang page: article */
:root{
  --brand:#C8402B;
  --brand-dark:#A83321;
  --brand-soft:rgba(200,64,43,.08);
  --ink:#14342B;
  --ink-2:#1C1F1D;
  --lime:#B6FF3C;
  --bg:#FAF8F5;
  --bg-alt:#F2EFEA;
  --white:#FFFFFF;
  --border:#E6E2DB;
  --text:#3A3A38;
  --muted:#7A7873;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(28,31,29,.06);
  --shadow-2:0 12px 28px rgba(28,31,29,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
  --brand-darken:#B33724;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);font-weight:600;font-size:15px;
  padding:14px 28px;border:1.5px solid transparent;cursor:pointer;
  transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  line-height:1.2;text-align:center;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  color:var(--brand);font-weight:600;position:relative;display:inline-flex;align-items:center;gap:6px;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--brand);
  transition:width .18s var(--ease);
}
.text-link:hover::after{width:100%;}

/* ============ 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);background:var(--brand-soft);
  border-radius:var(--radius-pill);padding:6px 14px;
}
.badge-solid{background:var(--lime);color:var(--ink);letter-spacing:.04em;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(250,248,245,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background-color .24s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--border);
  box-shadow:0 1px 2px rgba(28,31,29,.06);
}
.header-inner{
  display:flex;align-items:center;gap:18px;
  height:76px;transition:height .24s var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:24px;border-radius:8px;background:var(--brand);
  position:relative;transform:skewX(-12deg);flex-shrink:0;
}
.logo-mark::after{
  content:"";position:absolute;left:7px;right:7px;top:50%;height:3px;
  transform:translateY(-50%);background:var(--lime);border-radius:2px;
}
.logo-text{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:-0.02em;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--brand);}
.nav-search{
  flex:1 1 auto;max-width:460px;min-width:180px;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 18px;
  background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius-pill);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.nav-search svg{width:18px;height:18px;flex:0 0 18px;stroke:var(--muted);fill:none;stroke-width:2;stroke-linecap:round;}
.nav-search input{
  flex:1;border:0;background:transparent;outline:none;
  font-size:14.5px;color:var(--text);min-width:0;
}
.nav-search input::placeholder{color:#A9A6A0;}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);background:#fff;}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;padding:8px 14px;font-size:15px;font-weight:500;color:#40403D;
  border-radius:10px;transition:color .2s var(--ease),background-color .2s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:rgba(200,64,43,.06);}
.nav-link.active{color:var(--ink);font-weight:700;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-cta{flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;flex-shrink:0;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);}
.nav-toggle span{
  position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease),background-color .24s var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}

/* 移动端抽屉 */
.nav-drawer{
  position:fixed;left:0;right:0;top:0;z-index:70;
  background:var(--bg);
  padding:88px 20px 28px;
  transform:translateY(-102%);
  transition:transform .3s var(--ease);
  box-shadow:0 20px 40px rgba(28,31,29,.14);
  max-height:100vh;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateY(0);}
.drawer-search{margin-bottom:18px;max-width:none;height:48px;}
.drawer-link{
  display:block;padding:14px 4px;font-size:17px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--border);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-link:hover{color:var(--brand);padding-left:10px;}
.drawer-link.active{color:var(--brand);}
.drawer-cta{margin-top:22px;width:100%;}

/* ============ 页面主体 ============ */
.page-wrap{padding:28px 0 72px;}
.layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:32px;align-items:start;
}
@media(min-width:1024px){
  .layout{grid-template-columns:minmax(0,1fr) 300px;gap:44px;}
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--muted);margin-bottom:22px;
}
.breadcrumb a{color:var(--muted);transition:color .18s var(--ease);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C4C0B8;}
.breadcrumb .current{
  color:var(--ink);font-weight:600;max-width:340px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
@media(max-width:520px){.breadcrumb .current{max-width:180px;}}

.article-head{margin-bottom:26px;max-width:820px;}
.article-title{
  font-size:clamp(28px,4vw,44px);
  font-weight:800;line-height:1.2;letter-spacing:-0.02em;
  margin:16px 0 18px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13.5px;color:var(--muted);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C4C0B8;}
.share-group{display:flex;align-items:center;gap:8px;margin-left:auto;position:relative;}
.share-btn{
  display:inline-flex;align-items:center;gap:6px;
  border:1px solid var(--border);background:#fff;color:var(--ink);
  border-radius:var(--radius-pill);padding:7px 14px;font-size:13px;font-weight:600;cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.share-btn svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.share-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.share-btn.copied{border-color:var(--brand);background:var(--lime);color:var(--ink);}
.share-tip{
  font-size:12.5px;color:var(--brand);opacity:0;transition:opacity .2s var(--ease);
}
.share-tip.show{opacity:1;}

/* ============ 阅读区 ============ */
.reading-card{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:20px;
  box-shadow:var(--shadow-1);
  padding:20px;
}
@media(min-width:768px){.reading-card{padding:36px 40px;}}
.reading-inner{max-width:780px;margin:0 auto;}
.article-body{font-size:17px;line-height:1.9;color:var(--text);}
.article-body p{margin:0 0 20px;}
.article-body h2{
  font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.35;
  margin:48px 0 16px;scroll-margin-top:104px;
}
.article-body h3{font-size:20px;font-weight:600;line-height:1.45;margin:32px 0 12px;scroll-margin-top:104px;}
.article-body h4{font-size:17.5px;font-weight:600;margin:24px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;
  background:var(--brand);border-radius:2px;
}
.article-body ol{counter-reset:olc;padding-left:0;}
.article-body ol li{position:relative;padding-left:34px;margin-bottom:10px;counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc);
  position:absolute;left:0;top:.28em;width:22px;height:22px;
  display:flex;align-items:center;justify-content:center;
  font-size:12.5px;font-weight:700;color:#fff;background:var(--brand);border-radius:6px;
}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;
  border-left:3px solid var(--brand);
  background:var(--bg-alt);
  border-radius:12px;
  color:#4A4A47;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:14px;margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15.5px;}
.article-body th{background:var(--bg-alt);text-align:left;font-weight:600;color:var(--ink);}
.article-body th,.article-body td{border-bottom:1px solid var(--border);padding:12px 14px;}
.article-body thead th{border-bottom:1px solid #D8D3CA;}
.article-body pre{
  background:#F2EFEA;border:1px solid var(--border);border-radius:12px;
  padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.94em;}
.article-body p code,.article-body li code{background:var(--bg-alt);padding:2px 6px;border-radius:6px;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body a:hover{color:var(--brand-dark);}
.article-body hr{border:0;border-top:1px solid var(--border);margin:36px 0;}
.article-body strong{color:var(--ink);font-weight:700;}

.empty-state{text-align:center;padding:56px 24px;}
.empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:18px;
  background:var(--bg-alt);display:flex;align-items:center;justify-content:center;
}
.empty-icon svg{width:26px;height:26px;stroke:var(--brand);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.empty-title{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.empty-desc{font-size:15px;color:var(--muted);max-width:420px;margin:0 auto 24px;}

/* ============ 正文尾部 ============ */
.article-foot{margin-top:44px;padding-top:28px;border-top:1px solid var(--border);}
.tag-group{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:28px;}
.tag-group .tag-label{font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.06em;}
.tag{
  display:inline-flex;align-items:center;
  font-size:13px;color:var(--ink);background:var(--bg-alt);
  border:1px solid var(--border);border-radius:var(--radius-pill);padding:6px 14px;
  transition:border-color .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}

.post-nav{display:grid;grid-template-columns:1fr;gap:16px;}
@media(min-width:640px){.post-nav{grid-template-columns:1fr 1fr;}}
.post-nav-card{
  display:block;background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius);padding:18px 20px;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.post-nav-card:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow-2);}
.pn-label{display:block;font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--brand);margin-bottom:8px;}
.pn-title{display:block;font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.5;}
.back-row{margin-top:26px;}

/* ============ 侧栏 ============ */
.layout-side{display:none;}
@media(min-width:1024px){
  .layout-side{display:block;position:sticky;top:96px;}
}
.side-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;margin-bottom:20px;box-shadow:var(--shadow-1);
}
.side-title{
  font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-title::before{content:"";width:4px;height:15px;background:var(--brand);border-radius:2px;}
.toc{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  display:block;font-size:14px;color:#5A5A56;line-height:1.6;
  padding:7px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-link:hover{color:var(--brand);border-left-color:var(--brand);background:var(--brand-soft);}
.toc-empty{font-size:13.5px;color:var(--muted);}
.hot-list li{border-bottom:1px solid var(--border);}
.hot-list li:last-child{border-bottom:0;}
.hot-list a{
  display:flex;gap:10px;align-items:flex-start;
  padding:11px 0;font-size:14.5px;color:#45453F;line-height:1.6;
  transition:color .18s var(--ease);
}
.hot-list a:hover{color:var(--brand);}
.hot-num{
  flex:0 0 20px;height:20px;border-radius:6px;background:var(--bg-alt);
  color:var(--muted);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.hot-list li:nth-child(1) .hot-num,
.hot-list li:nth-child(2) .hot-num,
.hot-list li:nth-child(3) .hot-num{background:var(--brand);color:#fff;}
.side-cta{
  background:var(--ink);border-radius:var(--radius);padding:24px 20px;color:#fff;
}
.side-cta h3{color:#fff;font-size:18px;font-weight:700;margin-bottom:10px;}
.side-cta p{font-size:14px;color:rgba(255,255,255,.72);line-height:1.75;margin-bottom:18px;}
.side-cta .btn-primary{background:var(--brand);}
.side-cta .btn-primary:hover{background:var(--brand-dark);}

/* 移动端 CTA 条 */
.mobile-cta{
  display:block;background:var(--ink);border-radius:var(--radius);
  padding:22px 20px;margin-top:28px;color:#fff;
}
@media(min-width:1024px){.mobile-cta{display:none;}}
.mobile-cta h3{color:#fff;font-size:17px;margin-bottom:8px;}
.mobile-cta p{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:16px;line-height:1.7;}

/* ============ 相关推荐 ============ */
.section{padding:72px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;}
.section-head p{font-size:15px;color:var(--muted);margin-top:10px;max-width:660px;}
.reco-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:768px){.reco-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.reco-grid{grid-template-columns:repeat(3,1fr);}}
.reco-card{
  display:flex;flex-direction:column;background:var(--white);
  border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.reco-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand);}
.reco-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt);}
.reco-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.reco-card:hover .reco-thumb img{transform:scale(1.05);}
.reco-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.reco-body h3{font-size:17.5px;font-weight:600;line-height:1.45;}
.reco-body p{font-size:14.5px;color:var(--muted);line-height:1.75;}
.reco-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);}
.reco-arrow{color:var(--brand);font-weight:700;transition:transform .22s var(--ease);}
.reco-card:hover .reco-arrow{transform:translateX(4px);}

/* ============ 联系 CTA ============ */
.contact-band{background:var(--ink);color:#fff;padding:64px 0;}
.contact-inner{display:grid;gap:28px;grid-template-columns:1fr;}
@media(min-width:1024px){.contact-inner{grid-template-columns:1.3fr 1fr;align-items:center;gap:48px;}}
.contact-band h2{color:#fff;font-size:clamp(24px,2.8vw,32px);line-height:1.3;margin-bottom:14px;}
.contact-band p{color:rgba(255,255,255,.74);font-size:15.5px;line-height:1.85;max-width:560px;}
.contact-actions{display:flex;flex-wrap:wrap;gap:14px;}
.contact-actions .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;}
.contact-actions .btn-ghost:hover{background:rgba(255,255,255,.1);border-color:#fff;}
.contact-list{
  margin-top:26px;display:grid;gap:0;grid-template-columns:1fr;
  border-top:1px solid rgba(255,255,255,.12);
}
@media(min-width:640px){.contact-list{grid-template-columns:repeat(3,1fr);}}
.contact-list div{
  padding:16px 0;font-size:14px;color:rgba(255,255,255,.72);
  border-bottom:1px solid rgba(255,255,255,.12);
}
@media(min-width:640px){
  .contact-list div{border-bottom:0;padding:18px 18px 0 0;}
}
.contact-list strong{display:block;color:#fff;font-size:15px;margin-bottom:4px;font-weight:600;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;}}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;font-size:19px;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.7);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--lime);}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:60;
  width:48px;height:48px;border-radius:50%;border:0;
  background:var(--brand);color:#fff;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),background-color .24s var(--ease),visibility .24s;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-dark);transform:translateY(-3px);}
.to-top svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 响应式收尾 ============ */
@media(max-width:1023px){
  .main-nav{display:none;}
  .header-cta{display:none;}
  .nav-search{max-width:340px;}
  .nav-toggle{display:flex;}
}
@media(max-width:767px){
  .nav-search{display:none;}
  .header-inner{justify-content:space-between;height:64px;}
  .site-header.is-scrolled .header-inner{height:58px;}
  .section{padding:56px 0;}
  .page-wrap{padding:18px 0 56px;}
  .contact-band{padding:52px 0;}
}
@media(max-width:520px){
  .container{padding:0 16px;}
  .reading-card{padding:18px 16px;}
  .share-group{width:100%;margin-left:0;margin-top:4px;}
  .footer-bottom{flex-direction:column;}
}

@media (prefers-reduced-motion: reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --brand:#C8402B;
  --brand-dark:#A63122;
  --brand-soft:rgba(200,64,43,.08);
  --ink:#14342B;
  --ink-2:#1C1F1D;
  --lime:#B6FF3C;
  --bg:#FAF8F5;
  --bg-alt:#F2EFEA;
  --white:#ffffff;
  --text:#3A3A38;
  --muted:#7A7873;
  --border:#E6E2DB;
  --r-lg:16px;
  --r-md:12px;
  --r-xl:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(28,31,29,.06);
  --sh-2:0 12px 28px rgba(28,31,29,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body.site-body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,248,245,.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--border);box-shadow:0 4px 18px rgba(28,31,29,.06);background:rgba(255,255,255,.96)}
.header-inner{display:flex;align-items:center;gap:20px;height:76px;transition:height .26s var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{position:relative;width:28px;height:28px;border-radius:9px;background:var(--brand);overflow:hidden;flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;left:-4px;right:-4px;bottom:6px;height:5px;background:var(--lime);transform:skewX(-20deg)}
.logo-text{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:.01em;line-height:1}
.logo-text em{font-style:normal;color:var(--brand)}

.nav-search{
  position:relative;display:flex;align-items:center;
  flex:1 1 auto;max-width:420px;min-width:160px;height:42px;
  padding:0 16px;background:#fff;border:1px solid var(--border);border-radius:var(--r-pill);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft)}
.nav-search svg{width:18px;height:18px;flex:0 0 auto;fill:none;stroke:var(--muted);stroke-width:2;stroke-linecap:round}
.nav-search input{border:0;outline:0;background:transparent;width:100%;padding-left:10px;font-size:14px;color:var(--text);font-family:inherit}
.nav-search input::placeholder{color:#A9A6A0}

.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{position:relative;padding:9px 13px;font-size:15px;color:var(--text);border-radius:var(--r-pill);transition:color .2s var(--ease),background .2s var(--ease)}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--brand)}
.header-cta{flex:0 0 auto}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--border);background:#fff;border-radius:12px;align-items:center;justify-content:center;cursor:pointer;flex:0 0 auto}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 移动抽屉 */
.mobile-drawer{position:fixed;inset:0;z-index:90;background:var(--bg);padding:22px 20px 40px;display:none;flex-direction:column;gap:18px;overflow-y:auto}
.mobile-drawer.open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:42px;height:42px;border-radius:12px;border:1px solid var(--border);background:#fff;font-size:22px;line-height:1;color:var(--ink);cursor:pointer}
.drawer-search{max-width:none;width:100%}
.drawer-nav{display:flex;flex-direction:column;gap:10px}
.drawer-link{padding:15px 18px;border:1px solid var(--border);border-radius:14px;background:#fff;font-size:16px;font-weight:600;color:var(--ink);transition:border-color .2s var(--ease),color .2s var(--ease)}
.drawer-link:hover{border-color:var(--brand);color:var(--brand)}
.drawer-link.active{color:var(--brand);border-color:var(--brand);background:var(--brand-soft)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;font-size:15px;font-weight:600;line-height:1.2;
  border-radius:var(--r-pill);border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(200,64,43,.25)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(200,64,43,.24)}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 6px 14px rgba(200,64,43,.2)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(0,0,0,.16)}
.btn:focus-visible,.nav-link:focus-visible,.drawer-link:focus-visible,.faq-q:focus-visible,a:focus-visible,input:focus-visible,button:focus-visible{outline:2px solid var(--lime);outline-offset:2px}

/* ============ 通用 ============ */
.section{padding:var(--sec) 0}
.section-alt{background:var(--bg-alt)}
.section-white{background:#fff}
.eyebrow{display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:600;letter-spacing:.08em}
.eyebrow.on-dark{background:rgba(182,255,60,.14);color:var(--lime)}
.section-head{max-width:780px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--ink);margin:16px 0 12px}
.section-head p{margin:0;font-size:15.5px;color:var(--muted)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:600;letter-spacing:.02em}
.badge.solid{background:var(--ink);color:#fff}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14.5px;font-weight:600;position:relative}
.link-arrow::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--brand);transition:width .18s var(--ease)}
.link-arrow:hover::after{width:100%}
.link-arrow svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease)}
.link-arrow:hover svg{transform:translateX(3px)}

.fact-chip{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#fff;font-size:13.5px}
.fact-chip strong{font-family:"DIN Alternate","Bebas Neue",sans-serif;font-size:17px;color:var(--lime);font-weight:700;letter-spacing:.02em}

/* ============ 页头 ============ */
.page-hero{
  position:relative;color:#fff;padding:42px 0 56px;
  background-color:var(--ink);
  background-image:linear-gradient(180deg,rgba(20,52,43,.86),rgba(20,52,43,.95)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:rgba(255,255,255,.68);margin-bottom:24px}
.breadcrumb a{color:rgba(255,255,255,.86);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb .sep{opacity:.5}
.page-hero h1{font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin:18px 0 18px;color:#fff;max-width:22ch}
.page-hero .lede{max-width:72ch;margin:0;font-size:16px;line-height:1.9;color:rgba(255,255,255,.82)}
.hero-strip{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* ============ 横排赛程卡 ============ */
.sched-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.sched-card{display:flex;gap:18px;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:18px;box-shadow:var(--sh-1);transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.sched-card:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--sh-2)}
.sched-thumb{flex:0 0 156px;width:156px;border-radius:var(--r-md);overflow:hidden;background:var(--bg-alt);position:relative}
.sched-thumb img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.sched-index{position:absolute;left:8px;top:8px;padding:2px 9px;border-radius:var(--r-pill);background:rgba(20,52,43,.82);color:#fff;font-family:"DIN Alternate","Bebas Neue",sans-serif;font-size:13px;letter-spacing:.06em}
.sched-body{min-width:0;flex:1 1 auto;display:flex;flex-direction:column}
.sched-body h3{margin:12px 0 8px;font-size:19px;font-weight:600;line-height:1.4;color:var(--ink)}
.sched-body p.sum{margin:0 0 12px;font-size:14.5px;line-height:1.75;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.point-list{list-style:none;padding:0;margin:0 0 14px;display:grid;gap:6px}
.point-list li{position:relative;padding-left:16px;font-size:14px;line-height:1.7;color:var(--muted)}
.point-list li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:2px;background:var(--brand)}
.sched-body .link-arrow{margin-top:auto}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding-left:30px;max-width:820px}
.timeline::before{content:"";position:absolute;left:10px;top:8px;bottom:8px;width:2px;background:var(--border)}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-30px;top:6px;width:20px;height:20px;border-radius:50%;background:#fff;border:2px solid var(--brand)}
.tl-item h3{margin:0 0 8px;font-size:18px;font-weight:600;color:var(--ink);line-height:1.45}
.tl-item p{margin:0;font-size:15px;line-height:1.85;color:var(--text)}
.tl-time{display:inline-block;font-family:"DIN Alternate","Bebas Neue",sans-serif;font-size:13px;letter-spacing:.06em;color:var(--brand);margin-right:8px}

/* ============ 对比清单 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.compare-col{padding:34px 34px 34px 0}
.compare-col + .compare-col{border-left:1px solid var(--border);padding-left:34px;padding-right:0}
.compare-col h3{margin:0 0 6px;font-size:19px;font-weight:600;color:var(--ink)}
.compare-col .sub{margin:0 0 20px;font-size:13.5px;color:var(--muted)}
.compare-list{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.compare-list li{display:flex;gap:11px;font-size:15px;line-height:1.8;color:var(--text)}
.check{flex:0 0 auto;width:20px;height:20px;margin-top:5px;border-radius:6px;background:var(--brand-soft);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.compare-col.neutral .check{background:#EFEDE8;color:var(--muted)}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);margin-bottom:14px;overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
.faq-item:hover{box-shadow:var(--sh-1)}
.faq-item.open{border-color:var(--brand)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 22px;background:none;border:0;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);cursor:pointer;line-height:1.6}
.faq-q .chev{width:20px;height:20px;flex:0 0 auto;fill:none;stroke:var(--brand);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .26s var(--ease)}
.faq-item.open .faq-q .chev{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a-inner{padding:0 22px 22px;margin-left:0;border-left:3px solid transparent;font-size:15px;line-height:1.9;color:var(--muted)}
.faq-item.open .faq-a-inner{border-left-color:var(--brand);padding-left:19px}

/* ============ CTA ============ */
.cta-band{background:var(--bg-alt);padding:64px 0}
.cta-inner{background:#fff;border:1px solid var(--border);border-radius:var(--r-xl);padding:40px;box-shadow:var(--sh-1);display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-inner h2{margin:0 0 10px;font-size:clamp(22px,2.4vw,30px);font-weight:700;color:var(--ink);line-height:1.35}
.cta-inner p{margin:0;font-size:15px;color:var(--muted);max-width:56ch}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;flex-wrap:wrap}
.cta-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;padding-top:22px;border-top:1px solid var(--border);font-size:13.5px;color:var(--muted)}
.cta-points span{display:inline-flex;align-items:center;gap:7px}
.cta-points i{width:7px;height:7px;border-radius:50%;background:var(--lime);display:inline-block}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{margin:16px 0 0;font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:36ch}
.footer-col h4{margin:0 0 16px;font-size:15px;font-weight:700;color:#fff;letter-spacing:.02em}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s var(--ease)}
.footer-col ul a:hover{color:var(--lime)}
.footer-col p{margin:0;font-size:14px;line-height:1.95;color:rgba(255,255,255,.66)}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55)}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sec:72px}
  .header-inner{height:68px;gap:14px}
  .main-nav .nav-link{padding:8px 10px;font-size:14.5px}
  .nav-search{max-width:300px}
  .sched-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:900px){
  .main-nav{display:none}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .nav-search{flex:1 1 auto;max-width:none}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:32px}
  .compare{grid-template-columns:1fr;border-bottom:0}
  .compare-col{padding:26px 0}
  .compare-col + .compare-col{border-left:0;border-top:1px solid var(--border);padding-left:0;padding-top:26px}
}
@media (max-width:640px){
  :root{--sec:56px}
  .container{padding:0 16px}
  .logo-text{font-size:17px}
  .page-hero{padding:28px 0 44px}
  .page-hero h1{max-width:none;margin:14px 0 14px}
  .sched-card{flex-direction:column;padding:16px}
  .sched-thumb{flex:none;width:100%}
  .sched-thumb img{aspect-ratio:16/9}
  .faq-q{font-size:15.5px;padding:17px 18px}
  .faq-a-inner{padding:0 18px 18px}
  .cta-band{padding:48px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1!important;transform:none!important}
}

/* roulang page: category2 */
:root{
    --brand:#C8402B;
    --brand-dark:#A8321F;
    --brand-soft:rgba(200,64,43,.08);
    --ink:#14342B;
    --ink-2:#1C1F1D;
    --lime:#B6FF3C;
    --bg:#FAF8F5;
    --surface:#FFFFFF;
    --surface-2:#F2EFEA;
    --text:#3A3A38;
    --muted:#7A7873;
    --border:#E6E2DB;
    --radius-card:16px;
    --radius-img:14px;
    --radius-btn:999px;
    --shadow-1:0 1px 2px rgba(28,31,29,.06);
    --shadow-2:0 12px 28px rgba(28,31,29,.12);
    --ease:cubic-bezier(.22,.61,.36,1);
    --nav-h:76px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;scroll-padding-top:96px}
  html body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none}
  button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
  input{font:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (max-width:640px){.container{padding:0 16px}}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(250,248,245,.94);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom:1px solid transparent;
    transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
  }
  .site-header.is-scrolled{border-bottom-color:var(--border);box-shadow:0 6px 18px rgba(28,31,29,.06)}
  .header-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h);transition:height .24s var(--ease)}
  .site-header.is-scrolled .header-inner{height:64px}

  .logo{display:inline-flex;align-items:center;gap:10px;flex:none}
  .logo-mark{
    position:relative;width:30px;height:30px;border-radius:9px;flex:none;
    background:linear-gradient(135deg,var(--brand),#E4694F);
    box-shadow:0 4px 10px rgba(200,64,43,.24);
  }
  .logo-mark::after{
    content:"";position:absolute;top:8px;bottom:8px;left:7px;right:7px;
    border-left:3px solid #fff;border-right:3px solid rgba(255,255,255,.55);border-radius:2px;
  }
  .logo-text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
  .logo-text em{font-style:normal;color:var(--brand)}

  .nav-search{
    display:flex;align-items:center;gap:8px;
    flex:0 1 40%;min-width:200px;height:44px;
    padding:0 16px;background:#fff;
    border:1px solid var(--border);border-radius:999px;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .nav-search svg{width:18px;height:18px;flex:none;fill:none;stroke:var(--muted);stroke-width:2;stroke-linecap:round}
  .nav-search input{border:0;outline:0;background:transparent;width:100%;font-size:14.5px;color:var(--text)}
  .nav-search input::placeholder{color:#A8A5A0}
  .nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft)}

  .main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
  .nav-link{
    position:relative;padding:8px 14px;border-radius:999px;
    font-size:15px;font-weight:600;color:#4A4844;
    transition:color .18s var(--ease),background .18s var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
    background:var(--brand);transform:scaleX(0);transform-origin:left;
    transition:transform .22s var(--ease);
  }
  .nav-link:hover{color:var(--brand);background:var(--brand-soft)}
  .nav-link.active{color:var(--brand)}
  .nav-link.active::after{transform:scaleX(1)}

  .nav-toggle{
    display:none;width:42px;height:42px;flex:none;align-items:center;justify-content:center;
    background:#fff;border:1px solid var(--border);border-radius:12px;
    transition:border-color .2s var(--ease);
  }
  .nav-toggle:hover{border-color:var(--brand)}
  .nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
  .nav-toggle span::before,.nav-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
    transition:transform .22s var(--ease),top .22s var(--ease),background .22s var(--ease);
  }
  .nav-toggle span::before{top:-6px}
  .nav-toggle span::after{top:6px}
  .site-header.nav-open .nav-toggle span{background:transparent}
  .site-header.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
  .site-header.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:14px 28px;border:1.5px solid transparent;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;white-space:nowrap;
    transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(200,64,43,.22)}
  .btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(200,64,43,.28)}
  .btn-primary:active{transform:translateY(-1px)}
  .btn-outline{border-color:var(--brand);color:var(--brand);background:transparent}
  .btn-outline:hover{background:var(--brand-soft);transform:translateY(-2px)}
  .btn-outline:active{transform:translateY(-1px)}
  .btn-lime{background:var(--lime);color:var(--ink)}
  .btn-lime:hover{background:#a7ef2f;transform:translateY(-2px);box-shadow:0 12px 24px rgba(182,255,60,.28)}
  .btn-lime:active{transform:translateY(-1px)}
  .btn-ghost{border-color:rgba(255,255,255,.4);color:#fff;background:transparent}
  .btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
  .btn-sm{padding:10px 20px;font-size:14px}
  .btn-lg{padding:16px 34px;font-size:16px}

  .link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px}
  .link-arrow span{position:relative}
  .link-arrow span::after{
    content:"";position:absolute;left:0;right:0;bottom:-3px;height:1.5px;background:var(--brand);
    transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease);
  }
  .link-arrow:hover span::after{transform:scaleX(1)}
  .link-arrow:hover svg{transform:translateX(3px)}
  .link-arrow svg{width:16px;height:16px;fill:none;stroke:var(--brand);stroke-width:2;stroke-linecap:round;transition:transform .18s var(--ease)}

  /* ---------- 深色页头 ---------- */
  .page-hero{position:relative;overflow:hidden;padding:56px 0 64px;background:var(--ink);color:#fff}
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background-image:url(/assets/images/backpic/back-1.png);
    background-size:cover;background-position:center;opacity:.22;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(115deg,rgba(20,52,43,.97) 0%,rgba(20,52,43,.86) 48%,rgba(28,31,29,.72) 100%);
  }
  .page-hero .container{position:relative;z-index:2}

  .breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:18px;font-size:13px;color:rgba(255,255,255,.62)}
  .breadcrumb a{color:rgba(255,255,255,.82);transition:color .18s var(--ease)}
  .breadcrumb a:hover{color:var(--lime)}
  .breadcrumb .sep{opacity:.5}

  .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:44px;align-items:center}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:7px 16px;border-radius:999px;
    background:rgba(182,255,60,.16);color:var(--lime);
    font-size:12.5px;font-weight:600;letter-spacing:.08em;
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime)}
  .hero-title{
    margin-top:18px;
    font-size:clamp(30px,4.2vw,50px);
    font-weight:800;line-height:1.15;letter-spacing:-.02em;color:#fff;
    max-width:22ch;
  }
  .hero-title mark{background:none;color:var(--lime)}
  .hero-sub{margin-top:18px;font-size:16.5px;line-height:1.9;color:rgba(255,255,255,.78);max-width:60ch}
  .hero-facts{display:flex;flex-wrap:wrap;gap:14px 36px;margin-top:30px;padding-top:24px;border-top:1px solid rgba(255,255,255,.16)}
  .hero-facts div{min-width:120px}
  .hero-facts strong{
    display:block;font-size:20px;font-weight:800;color:var(--lime);
    font-family:"DIN Alternate","Bebas Neue",Impact,sans-serif;letter-spacing:.01em;
  }
  .hero-facts span{font-size:13.5px;color:rgba(255,255,255,.72)}
  .hero-figure{
    border:1px solid rgba(255,255,255,.16);border-radius:var(--radius-card);overflow:hidden;
    box-shadow:0 20px 44px rgba(0,0,0,.3);
  }
  .hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}

  /* ---------- 主体布局 ---------- */
  .cat-layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:48px;padding:72px 0 24px;align-items:start}

  .toc{
    position:sticky;top:104px;
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-1);
  }
  .toc-title{font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--muted);margin-bottom:12px}
  .toc ul{display:flex;flex-direction:column;gap:2px}
  .toc a{
    display:block;padding:9px 12px;border-radius:10px;border-left:2px solid transparent;
    font-size:14.5px;color:#4A4844;
    transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  }
  .toc a:hover{background:var(--surface-2);color:var(--brand)}
  .toc a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;border-left-color:var(--brand)}
  .toc-cta{width:100%;margin-top:16px}

  .doc-section{padding-bottom:52px;margin-bottom:52px;border-bottom:1px solid var(--border);scroll-margin-top:96px}
  .doc-section:last-of-type{border-bottom:0;margin-bottom:0}
  .sec-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:16px}
  .sec-num{
    flex:none;padding-top:2px;color:var(--brand);
    font-family:"DIN Alternate","Bebas Neue",Impact,sans-serif;
    font-size:34px;font-weight:800;line-height:1;letter-spacing:-.02em;
  }
  .sec-title{font-size:clamp(21px,2.2vw,27px);font-weight:700;line-height:1.35;color:var(--ink)}
  .sec-kicker{display:block;margin-top:6px;font-size:13px;font-weight:500;color:var(--muted)}
  .lead{font-size:16.5px;line-height:1.9;color:var(--text);max-width:74ch}

  .point-list{display:grid;gap:12px;margin-top:20px;max-width:76ch}
  .point-list li{position:relative;padding-left:26px;font-size:15.5px;line-height:1.85;color:#4A4844}
  .point-list li::before{
    content:"";position:absolute;left:0;top:.62em;width:9px;height:9px;border-radius:2px;
    background:var(--brand);transform:rotate(45deg);
  }
  .point-list li strong{color:var(--ink);font-weight:700}

  .split{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center;margin-top:24px}
  .split-figure{margin:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:box-shadow .24s var(--ease),border-color .24s var(--ease)}
  .split-figure:hover{box-shadow:var(--shadow-2);border-color:#D8D2C8}
  .split-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
  .split-figure figcaption{padding:12px 16px;font-size:13px;color:var(--muted);line-height:1.7}

  .spec-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:24px}
  .spec{
    background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .spec:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--brand)}
  .spec strong{
    display:block;font-size:19px;font-weight:800;color:var(--brand);
    font-family:"DIN Alternate","Bebas Neue",Impact,sans-serif;
  }
  .spec span{display:block;margin-top:6px;font-size:13.5px;line-height:1.75;color:var(--muted)}

  .note-strip{
    display:flex;gap:14px;align-items:flex-start;margin-top:22px;padding:16px 20px;
    background:var(--surface-2);border-left:3px solid var(--brand);border-radius:12px;
    font-size:15px;line-height:1.85;color:#4A4844;max-width:76ch;
  }
  .note-strip strong{color:var(--ink)}

  .summary-card{background:var(--surface-2);border-left:4px solid var(--brand);border-radius:14px;padding:26px 28px;margin-top:8px}
  .summary-card h3{font-size:19px;font-weight:700;color:var(--ink);margin-bottom:12px}
  .summary-card p{font-size:15.5px;line-height:1.9;color:#4A4844;max-width:74ch}

  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
  .tag{
    display:inline-flex;align-items:center;gap:8px;
    padding:9px 18px;background:var(--surface);border:1px solid var(--border);border-radius:999px;
    font-size:14px;color:#4A4844;
    transition:transform .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
  }
  .tag:hover{transform:translateY(-2px);border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
  .tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);opacity:.7}

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:12px;margin-top:22px;max-width:820px}
  .faq-item{background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
  .faq-item:hover{border-color:#D8D2C8}
  .faq-item.open{border-color:var(--brand);box-shadow:var(--shadow-1)}
  .faq-q{
    position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;
    width:100%;padding:18px 20px;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);
  }
  .faq-q::before{
    content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
    background:var(--brand);transform:scaleY(0);transform-origin:top;transition:transform .24s var(--ease);
  }
  .faq-item.open .faq-q::before{transform:scaleY(1)}
  .faq-arrow{width:20px;height:20px;flex:none;fill:none;stroke:var(--brand);stroke-width:2;stroke-linecap:round;transition:transform .26s var(--ease)}
  .faq-item.open .faq-arrow{transform:rotate(180deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
  .faq-a p{padding:0 20px 20px 20px;font-size:15px;line-height:1.9;color:#4A4844;max-width:70ch}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    margin-top:72px;padding:42px 38px;
    background:var(--ink);border-radius:20px;color:#fff;
  }
  .cta-band::after{
    content:"";position:absolute;right:-60px;top:-70px;width:240px;height:240px;border-radius:50%;
    border:28px solid rgba(182,255,60,.12);
  }
  .cta-band h2{position:relative;font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.35;margin-bottom:8px}
  .cta-band p{position:relative;font-size:15px;line-height:1.85;color:rgba(255,255,255,.76);max-width:54ch}
  .cta-actions{position:relative;display:flex;gap:12px;flex:none}

  /* ---------- 页脚 ---------- */
  .site-footer{margin-top:80px;padding-top:64px;background:var(--ink);color:rgba(255,255,255,.74)}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
  .footer-brand .logo-text{color:#fff}
  .footer-brand p{margin-top:16px;font-size:14.5px;line-height:1.9;max-width:40ch}
  .footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px}
  .footer-col ul{display:grid;gap:10px}
  .footer-col a{font-size:14.5px;color:rgba(255,255,255,.74);transition:color .18s var(--ease)}
  .footer-col a:hover{color:var(--lime)}
  .footer-col p{font-size:14.5px;line-height:1.9}
  .footer-bottom{
    display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
    margin-top:44px;padding:20px 0 24px;
    border-top:1px solid rgba(255,255,255,.12);
    font-size:13px;color:rgba(255,255,255,.55);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .cat-layout{grid-template-columns:1fr;gap:32px;padding:48px 0 16px}
    .toc{position:static}
    .toc ul{flex-direction:row;flex-wrap:wrap;gap:8px}
    .toc a{padding:8px 14px;background:var(--surface-2);border-radius:999px;border-left:0}
    .toc a.is-active{background:var(--brand-soft);border-left:0}
    .toc-cta{display:none}
    .hero-grid{grid-template-columns:1fr;gap:28px}
    .hero-figure img{aspect-ratio:16/10}
    .split{grid-template-columns:1fr}
    .cta-band{flex-direction:column;align-items:flex-start;padding:34px 24px;margin-top:56px}
    .cta-actions{width:100%;flex-direction:column}
    .cta-actions .btn{width:100%}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}

    /* 移动导航 */
    .nav-toggle{display:flex;margin-left:auto}
    .header-cta{display:none}
    .header-inner{height:auto;flex-wrap:wrap;padding:12px 0;gap:12px}
    .site-header.is-scrolled .header-inner{height:auto}
    .main-nav{
      order:5;display:none;width:100%;flex-direction:column;align-items:stretch;gap:4px;
      margin-left:0;padding-top:10px;border-top:1px solid var(--border);
    }
    .nav-search{order:4;display:none;flex:1 1 100%;width:100%;min-width:0}
    .site-header.nav-open .main-nav,
    .site-header.nav-open .nav-search{display:flex}
    .nav-link{padding:12px 12px;border-radius:10px}
    .nav-link::after{display:none}
    .nav-link.active{background:var(--brand-soft)}
  }
  @media (max-width:900px){
    .spec-row{grid-template-columns:1fr 1fr}
  }
  @media (max-width:640px){
    .page-hero{padding:40px 0 48px}
    .hero-title{max-width:none}
    .hero-facts{gap:14px 24px}
    .spec-row{grid-template-columns:1fr}
    .doc-section{padding-bottom:40px;margin-bottom:40px}
    .sec-num{font-size:28px}
    .summary-card{padding:22px 20px}
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *,*::before,*::after{transition-duration:.001ms!important;animation-duration:.001ms!important}
    .btn:hover,.spec:hover,.tag:hover,.split-figure:hover{transform:none}
  }