/* roulang page: index */
:root{
  --ink:#10231C;
  --ink-deep:#0C1A14;
  --lime:#C8F03C;
  --orange:#FF6A2B;
  --sand:#F6F3EE;
  --card:#FFFFFF;
  --line:#E4E0D8;
  --text:#3A4741;
  --muted:#6B7A73;
  --radius-card:14px;
  --radius-big:20px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(16,35,28,.06),0 8px 24px -12px rgba(16,35,28,.18);
  --shadow-lg:0 24px 48px -20px rgba(16,35,28,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --mono:"DIN Alternate","JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--sand);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:850;letter-spacing:-.02em;line-height:1.15;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1320px;}}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:700;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);display:block;}
.h2{font-size:clamp(26px,3vw,36px);}
.lede{color:var(--muted);font-size:16px;max-width:660px;margin-top:14px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;border:1.5px solid transparent;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  white-space:nowrap;
}
.btn .arrow{transition:transform .22s var(--ease);}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--ink);color:var(--sand);transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-primary:hover .arrow{transform:translateX(4px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--sand);transform:translateY(-2px);}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn-light{background:transparent;color:var(--sand);border-color:rgba(246,243,238,.4);}
.btn-light:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--ink);font-size:15px;border-bottom:1.5px solid transparent;transition:border-color .2s var(--ease),color .2s var(--ease);}
.btn-text:hover{border-color:var(--lime);}
.btn-text:hover .arrow{transform:translateX(4px);}
.btn-text .arrow{transition:transform .22s var(--ease);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;font-weight:700;
  background:var(--sand);color:var(--muted);border:1px solid var(--line);
}
.badge-lime{background:rgba(200,240,60,.28);color:#2E3A16;border-color:rgba(200,240,60,.5);}
.badge-orange{background:rgba(255,106,43,.12);color:#B03F0F;border-color:rgba(255,106,43,.28);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink);
  border-bottom:1px solid rgba(246,243,238,.08);
}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px;}
.logo{display:flex;flex-direction:column;line-height:1;flex:0 0 auto;padding:4px 0;}
.logo-mark{color:var(--sand);font-size:19px;font-weight:900;letter-spacing:-.02em;}
.logo-sub{color:var(--lime);font-size:11px;letter-spacing:.34em;font-weight:700;margin-top:5px;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;padding:10px 14px;color:rgba(246,243,238,.78);
  font-size:15px;font-weight:600;border-radius:8px;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;
  transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--sand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--sand);}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(246,243,238,.24);
  background:transparent;padding:0;place-items:center;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--sand);margin:3px auto;transition:transform .22s var(--ease),opacity .22s var(--ease);}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{
  background:var(--ink);
  color:var(--sand);
  padding:72px 0 88px;
  position:relative;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border-radius:50%;background:radial-gradient(circle,rgba(200,240,60,.16),transparent 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:1;min-height:78vh;}
.hero h1{
  color:var(--sand);
  font-size:clamp(32px,5.4vw,64px);
  font-weight:900;
  letter-spacing:-.02em;
}
.hero h1 em{font-style:normal;color:var(--lime);}
.hero-sub{margin-top:22px;font-size:clamp(16px,1.6vw,20px);color:rgba(246,243,238,.76);max-width:520px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:12px 40px;margin-top:52px;
  padding-top:28px;border-top:1px solid rgba(246,243,238,.14);
}
.stat{min-width:120px;}
.stat-num{
  font-family:var(--mono);font-size:30px;font-weight:800;color:var(--sand);letter-spacing:-.02em;
  display:flex;align-items:center;gap:10px;
}
.stat-num::before{content:"";width:18px;height:3px;background:var(--lime);display:block;border-radius:2px;}
.stat-label{font-size:13px;letter-spacing:.06em;color:rgba(246,243,238,.56);margin-top:6px;}
.hero-visual{position:relative;border-radius:var(--radius-big);overflow:hidden;}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;background:rgba(16,35,28,.3);
}
.hero-float{
  position:absolute;right:18px;bottom:18px;z-index:2;
  background:var(--card);color:var(--ink);
  border-radius:var(--radius-card);padding:16px 20px;min-width:190px;
  box-shadow:var(--shadow-lg);
}
.hero-float .fl-label{font-size:12px;letter-spacing:.08em;color:var(--muted);font-weight:700;}
.hero-float .fl-value{font-family:var(--mono);font-size:26px;font-weight:800;margin-top:4px;}
.hero-float .fl-note{font-size:12px;color:var(--muted);margin-top:4px;}

/* ---------- 价值主张 ---------- */
.value-list{border-top:1px solid var(--line);}
.value-item{
  display:grid;grid-template-columns:120px 1fr;gap:32px;align-items:start;
  padding:34px 0;border-bottom:1px solid var(--line);
}
.value-num{
  font-family:var(--mono);font-size:clamp(40px,5vw,58px);font-weight:900;color:var(--lime);
  line-height:1;letter-spacing:-.04em;
}
.value-body h3{font-size:22px;margin-bottom:8px;}
.value-body p{color:var(--muted);max-width:640px;}
.value-item--wide{grid-column:1 / -1;}

/* ---------- 功能分组 ---------- */
.feature-block{padding:56px 0;border-top:1px solid var(--line);}
.feature-block:first-of-type{border-top:none;padding-top:0;}
.feature-block:nth-of-type(even){background:rgba(228,224,216,.34);border-radius:var(--radius-big);padding:56px 40px;}
.feature-layout{display:grid;grid-template-columns:260px 1fr;gap:48px;align-items:start;}
.feature-aside{position:sticky;top:104px;}
.feature-aside .feature-kicker{font-family:var(--mono);font-size:13px;color:var(--orange);font-weight:700;letter-spacing:.08em;}
.feature-aside h3{font-size:24px;margin:10px 0 12px;}
.feature-aside p{font-size:15px;color:var(--muted);}
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-sm);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(200,240,60,.7);}
.feature-icon{
  width:42px;height:42px;border-radius:12px;background:rgba(200,240,60,.3);
  display:grid;place-items:center;color:#2E3A16;font-weight:900;font-family:var(--mono);
  margin-bottom:16px;font-size:15px;
}
.feature-card h4{font-size:18px;margin-bottom:8px;}
.feature-card p{font-size:15px;color:var(--muted);}

/* ---------- 使用场景流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;position:relative;}
.flow-step{position:relative;}
.flow-step:not(:last-child)::after{
  content:"";position:absolute;top:78px;right:-14px;width:28px;border-top:2px dashed var(--line);
}
.flow-thumb{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:var(--card);}
.flow-thumb img{aspect-ratio:16/10;object-fit:cover;width:100%;}
.flow-index{
  display:inline-flex;align-items:center;gap:8px;margin:18px 0 8px;
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--orange);letter-spacing:.08em;
}
.flow-step h4{font-size:18px;margin-bottom:8px;}
.flow-step p{font-size:15px;color:var(--muted);}

/* ---------- 成功案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.case-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-big);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
  display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.case-media{position:relative;}
.case-media img{aspect-ratio:16/10;object-fit:cover;width:100%;}
.case-media .badge{position:absolute;top:14px;right:14px;background:rgba(255,255,255,.92);}
.case-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.case-body h3{font-size:20px;}
.case-body p{font-size:15px;color:var(--muted);}
.case-metrics{display:flex;gap:20px;flex-wrap:wrap;padding-top:16px;border-top:1px solid var(--line);margin-top:auto;}
.case-metrics div{min-width:70px;}
.case-metrics strong{display:block;font-family:var(--mono);font-size:20px;color:var(--ink);font-weight:800;}
.case-metrics span{font-size:12px;color:var(--muted);letter-spacing:.04em;}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:start;}
.price-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-big);
  padding:32px;box-shadow:var(--shadow-sm);position:relative;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(200,240,60,.7);}
.price-card--featured{
  border:1.5px solid var(--lime);transform:translateY(-8px);
  box-shadow:0 24px 48px -22px rgba(16,35,28,.3);
}
.price-card--featured:hover{transform:translateY(-12px);}
.price-flag{
  position:absolute;top:-13px;left:32px;background:var(--orange);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.06em;padding:5px 14px;border-radius:999px;
}
.price-name{font-size:19px;font-weight:800;color:var(--ink);}
.price-desc{font-size:14px;color:var(--muted);margin-top:6px;}
.price-amount{display:flex;align-items:baseline;gap:6px;margin:22px 0 4px;}
.price-amount strong{font-family:var(--mono);font-size:44px;font-weight:900;color:var(--ink);letter-spacing:-.03em;}
.price-amount span{font-size:14px;color:var(--muted);}
.price-list{margin:24px 0 28px;display:grid;gap:12px;}
.price-list li{display:flex;gap:10px;font-size:15px;color:var(--text);align-items:flex-start;}
.price-list li::before{
  content:"";flex:0 0 auto;width:18px;height:18px;border-radius:50%;
  background:rgba(200,240,60,.4);margin-top:5px;
  background-image:linear-gradient(45deg,transparent 44%,#2E3A16 44%,#2E3A16 56%,transparent 56%),linear-gradient(-45deg,transparent 44%,#2E3A16 44%,#2E3A16 56%,transparent 56%);
  background-size:100% 100%;
}
.price-card .btn{width:100%;}
.price-note{font-size:13px;color:var(--muted);margin-top:14px;text-align:center;}

/* ---------- 资讯 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(200,240,60,.7);}
.news-thumb{position:relative;overflow:hidden;}
.news-thumb img{aspect-ratio:16/9;object-fit:cover;width:100%;transition:transform .32s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-thumb .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);}
.news-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:18px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{
  font-size:15px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;justify-content:space-between;gap:12px;align-items:center;
  font-size:13px;letter-spacing:.04em;color:var(--muted);font-family:var(--mono);
  padding-top:12px;border-top:1px solid var(--line);margin-top:auto;
}
.news-empty{
  grid-column:1 / -1;min-height:220px;display:grid;place-items:center;text-align:center;
  background:var(--card);border:1px dashed var(--line);border-radius:var(--radius-card);padding:36px;
}
.news-empty .empty-icon{
  width:52px;height:52px;border-radius:50%;background:rgba(200,240,60,.3);
  display:grid;place-items:center;margin:0 auto 14px;color:#2E3A16;font-size:22px;font-weight:900;
}
.news-empty strong{display:block;color:var(--ink);font-size:17px;margin-bottom:6px;}
.news-empty span{font-size:14px;color:var(--muted);}
.skeleton{background:linear-gradient(90deg,#EDE9E2 25%,#F6F3EE 37%,#EDE9E2 63%);background-size:400% 100%;animation:shine 1.4s ease infinite;border-radius:8px;}
@keyframes shine{0%{background-position:100% 50%;}100%{background-position:0 50%;}}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:none;padding:22px 0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:18px;font-weight:700;color:var(--ink);transition:color .2s var(--ease);
}
.faq-q:hover{color:#2E3A16;}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1.5px solid var(--line);
  display:grid;place-items:center;color:var(--ink);font-size:15px;font-weight:800;
  transition:transform .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease);
}
.faq-item.open .faq-icon{background:var(--lime);border-color:var(--lime);transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a p{font-size:15px;color:var(--muted);padding:0 0 24px;max-width:680px;}

/* ---------- 通栏 CTA ---------- */
.cta-band{background:var(--ink-deep);color:var(--sand);padding:72px 0;}
.cta-band .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{color:var(--sand);font-size:clamp(24px,3vw,34px);}
.cta-band p{color:rgba(246,243,238,.7);margin-top:12px;max-width:560px;}
.cta-rule{height:1px;background:var(--lime);opacity:.7;}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start;}
.field{display:block;margin-bottom:18px;}
.field label{display:block;font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.04em;margin-bottom:8px;}
.field input,.field textarea,.field select{
  width:100%;height:48px;padding:0 14px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:var(--card);color:var(--text);font-size:15px;
  font-family:inherit;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(200,240,60,.55);
}
.field.error input,.field.error textarea{border-color:var(--orange);}
.field .err-msg{display:none;font-size:12px;color:var(--orange);margin-top:6px;}
.field.error .err-msg{display:block;}
.form-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-big);padding:32px;box-shadow:var(--shadow-sm);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:rgba(246,243,238,.72);padding:64px 0 32px;font-size:15px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo-mark{font-size:20px;}
.footer-brand p{font-size:14px;color:rgba(246,243,238,.6);margin-top:18px;max-width:320px;}
.footer-col h4{color:var(--sand);font-size:15px;margin-bottom:18px;letter-spacing:.04em;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(246,243,238,.68);font-size:14px;transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(246,243,238,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(246,243,238,.5);
}
.footer-bottom .mono{letter-spacing:.04em;}

/* ---------- 移动底部 Tab ---------- */
.tab-bar{display:none;}
@media (max-width:767px){
  body{padding-bottom:72px;}
  .tab-bar{
    display:grid;grid-template-columns:repeat(4,1fr);
    position:fixed;left:0;right:0;bottom:0;z-index:80;
    background:rgba(12,26,20,.97);backdrop-filter:blur(8px);
    border-top:1px solid rgba(246,243,238,.12);
    padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  }
  .tab-item{
    display:flex;flex-direction:column;align-items:center;gap:4px;
    color:rgba(246,243,238,.6);font-size:11px;padding:6px 2px;position:relative;
    transition:color .2s var(--ease);
  }
  .tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
  .tab-item::before{content:"";position:absolute;top:-7px;left:50%;transform:translateX(-50%) scaleX(0);width:26px;height:2px;background:var(--lime);transition:transform .2s var(--ease);}
  .tab-item.active{color:var(--lime);}
  .tab-item.active::before{transform:translateX(-50%) scaleX(1);}
}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:auto;}
  .hero{padding:48px 0 64px;}
  .hero-visual{order:2;}
  .feature-layout{grid-template-columns:1fr;gap:28px;}
  .feature-aside{position:static;}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .flow-step:not(:last-child)::after{display:none;}
  .case-grid,.price-grid,.news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .price-card--featured{transform:none;}
  .price-card--featured:hover{transform:translateY(-4px);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .form-grid{grid-template-columns:1fr;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;
    background:var(--ink);flex-direction:column;align-items:stretch;gap:0;
    padding:8px 24px 20px;border-bottom:1px solid rgba(246,243,238,.12);
    max-height:0;overflow:hidden;transition:max-height .3s var(--ease),padding .3s var(--ease);
    margin-left:0;
  }
  .main-nav.open{max-height:320px;}
  .nav-link{padding:14px 4px;border-bottom:1px solid rgba(246,243,238,.08);}
  .nav-link::after{display:none;}
  .nav-link.active{color:var(--lime);}
  .menu-toggle{display:grid;}
  .header-inner{justify-content:space-between;}
  .header-actions .btn-primary{display:none;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .feature-block:nth-of-type(even){padding:36px 20px;}
  .feature-grid{grid-template-columns:1fr;}
  .case-grid,.price-grid,.news-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .value-item{grid-template-columns:1fr;gap:12px;}
  .cta-band .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .hero-stats{gap:18px 28px;}
  .stat-num{font-size:26px;}
}
@media (max-width:520px){
  .hero h1{font-size:30px;}
  .hero-float{right:12px;bottom:12px;padding:12px 14px;min-width:150px;}
  .hero-float .fl-value{font-size:22px;}
  .btn{width:100%;}
  .hero-cta{flex-direction:column;}
  .btn-text{width:auto;}
  .case-metrics{gap:14px;}
}

/* roulang page: article */
:root{
  --ink:#10231C;
  --ink-deep:#0C1A14;
  --lime:#C8F03C;
  --lime-soft:rgba(200,240,60,.16);
  --orange:#FF6A2B;
  --bg:#F6F3EE;
  --bg-alt:#F1EDE6;
  --card:#FFFFFF;
  --line:#E4E0D8;
  --text:#3A4741;
  --muted:#6B7A73;
  --cream:#F6F3EE;
  --radius-btn:999px;
  --radius-s:10px;
  --radius-m:14px;
  --radius-l:20px;
  --shadow-1:0 1px 2px rgba(16,35,28,.06), 0 8px 24px -12px rgba(16,35,28,.18);
  --shadow-2:0 24px 48px -20px rgba(16,35,28,.28);
  --container:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono:"DIN Alternate","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,1,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.15}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn .arrow{transition:transform .22s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--ink);color:var(--cream);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border:1.5px solid rgba(16,35,28,.55);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:var(--cream);border-color:var(--ink);transform:translateY(-2px)}
.btn-ghost{color:var(--ink);font-weight:700;padding:0;height:auto}
.btn-ghost .arrow{display:inline-block}
.btn-ghost:hover{color:var(--ink)}
.btn:disabled,.btn[disabled]{opacity:.4;pointer-events:none;transform:none}
.btn-sm{height:40px;padding:0 20px;font-size:14px}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  background:var(--lime-soft);color:#41521A;
}
.tag-warm{background:rgba(255,106,43,.14);color:#A33B0C}
.tag-plain{background:var(--bg-alt);color:var(--muted)}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink);
  border-bottom:1px solid rgba(246,243,238,.1);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
.logo{display:flex;flex-direction:column;line-height:1.05;flex-shrink:0}
.logo-main{color:var(--cream);font-size:18px;font-weight:900;letter-spacing:-.01em}
.logo-sub{color:var(--lime);font-size:10px;font-weight:700;letter-spacing:.26em;margin-top:3px}
.main-nav{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;display:inline-block;
  color:rgba(246,243,238,.78);font-size:15px;font-weight:600;
  padding:6px 0;transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--lime);transition:width .18s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{width:100%}
.nav-link.active{color:#fff}
.nav-link.active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(246,243,238,.22);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--cream);position:relative;transition:.2s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--cream);transition:.2s var(--ease)
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.open span{background:transparent}
.nav-toggle.open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.open span::after{top:0;transform:rotate(-45deg)}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;left:0;right:0;top:76px;z-index:70;
  background:var(--ink);padding:14px 24px 26px;
  border-bottom:1px solid rgba(246,243,238,.12);
  transform:translateY(-10px);opacity:0;visibility:hidden;
  transition:transform .26s var(--ease),opacity .26s var(--ease),visibility .26s;
}
.nav-drawer.open{transform:translateY(0);opacity:1;visibility:visible}
.nav-drawer a{
  display:block;padding:15px 4px;color:rgba(246,243,238,.86);
  font-size:16px;font-weight:600;border-bottom:1px solid rgba(246,243,238,.08);
}
.nav-drawer a:last-child{border-bottom:none}
.nav-drawer a:hover{color:var(--lime)}

/* 面包屑 */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  font-size:13px;letter-spacing:.04em;color:var(--muted);
  padding:30px 0 0;
}
.crumbs a{color:var(--muted);transition:color .18s var(--ease)}
.crumbs a:hover{color:var(--ink)}
.crumbs .sep{opacity:.55}
.crumbs .now{color:var(--ink);font-weight:700;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 文章头部 */
.article-head{padding:22px 0 34px;border-bottom:1px solid var(--line)}
.head-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--muted);
  text-transform:uppercase;margin-bottom:16px;
}
.head-label::before{content:"";width:22px;height:2px;background:var(--lime);display:block}
.article-head h1{
  font-size:clamp(28px,3.6vw,40px);
  line-height:1.24;letter-spacing:-.02em;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:22px;font-size:13px;letter-spacing:.04em;color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.article-meta .mono{color:var(--ink);font-weight:700}

/* 布局 */
.article-wrap{padding:56px 0 0}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 236px;
  gap:56px;justify-content:center;align-items:start;
}
.article-body{font-size:17px;line-height:1.9;color:var(--text);word-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 20px}
.article-body h2{
  position:relative;font-size:26px;font-weight:800;line-height:1.35;
  margin:48px 0 18px;padding-left:18px;color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:3px;background:var(--lime);
}
.article-body h3{font-size:20px;font-weight:800;margin:34px 0 12px;color:var(--ink)}
.article-body h4{font-size:17px;font-weight:800;margin:26px 0 10px;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:24px}
.article-body ul li{list-style:none;position:relative;padding-left:6px}
.article-body ul li::before{
  content:"";position:absolute;left:-18px;top:12px;width:7px;height:7px;border-radius:2px;background:var(--lime);
}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:9px;line-height:1.85}
.article-body strong{color:var(--ink);font-weight:800}
.article-body a{color:var(--ink);font-weight:600;text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:2px;text-underline-offset:3px}
.article-body a:hover{color:#41521A}
.article-body blockquote{
  margin:26px 0;padding:20px 24px;background:var(--bg-alt);
  border-left:4px solid var(--ink);border-radius:0 var(--radius-s) var(--radius-s) 0;
  color:var(--ink);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-m);margin:26px auto;box-shadow:var(--shadow-1)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;letter-spacing:.04em}
.article-body pre{
  background:var(--ink-deep);color:#E7F2D6;padding:20px;border-radius:var(--radius-m);
  overflow-x:auto;font-family:var(--mono);font-size:14px;line-height:1.7;margin:0 0 22px;
}
.article-body code{
  font-family:var(--mono);font-size:.92em;background:var(--bg-alt);
  padding:2px 6px;border-radius:6px;color:#41521A;
}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body table{
  width:100%;border-collapse:collapse;margin:0 0 24px;display:block;overflow-x:auto;
  font-size:15px;
}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.article-body th{background:var(--bg-alt);color:var(--ink);font-weight:800}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0}

/* 目录 */
.toc{
  position:sticky;top:104px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-m);
  padding:22px;box-shadow:var(--shadow-1);
}
.toc h4{font-size:12px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;margin-bottom:14px}
.toc a{
  display:block;font-size:14px;color:var(--muted);padding:7px 0 7px 14px;
  border-left:2px solid var(--line);line-height:1.5;transition:.18s var(--ease);
}
.toc a:hover{color:var(--ink);border-left-color:var(--lime);background:rgba(200,240,60,.08)}
.toc a.is-active{color:var(--ink);font-weight:700;border-left-color:var(--lime)}

/* 文末 */
.article-foot{padding:56px 0 0}
.foot-tags{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding-top:26px;border-top:1px solid var(--line)}
.foot-tags .label{font-size:12px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;margin-right:6px}
.foot-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* 相关推荐 */
.related{padding:72px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:clamp(24px,2.6vw,32px)}
.section-head .more-link{font-size:14px;font-weight:700;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.section-head .more-link:hover{color:#41521A}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-m);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(200,240,60,.7)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card-media img{transform:scale(1.05)}
.card-media::after{content:"";position:absolute;inset:0;background:rgba(16,35,28,.18)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;line-height:1.4;letter-spacing:-.01em}
.card-body p{font-size:15px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.04em;color:var(--muted);margin-top:auto}

/* 空态 */
.article-body .empty-state{
  text-align:center;padding:64px 28px;background:var(--card);
  border:1px dashed var(--line);border-radius:var(--radius-l);
}
.empty-state .icon{
  width:56px;height:56px;border-radius:50%;background:var(--lime-soft);color:#41521A;
  display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:900;margin:0 auto 18px;
}
.empty-state h2{font-size:24px;margin-bottom:12px}
.empty-state p{color:var(--muted);max-width:420px;margin:0 auto 24px}
.article-body .empty-state h2::before{display:none}
.article-body .empty-state h2{padding-left:0}

/* 通栏 CTA */
.cta-band{
  margin-top:96px;background:var(--ink-deep);
  background-image:linear-gradient(90deg,rgba(12,26,20,.94) 0%,rgba(12,26,20,.72) 60%,rgba(12,26,20,.86) 100%),url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--lime);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:64px 0}
.cta-inner h2{color:var(--cream);font-size:clamp(24px,3vw,34px);max-width:560px}
.cta-inner p{color:rgba(246,243,238,.7);margin-top:12px;font-size:15px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-band .btn-outline{border-color:rgba(246,243,238,.5);color:var(--cream)}
.cta-band .btn-outline:hover{background:var(--cream);color:var(--ink);border-color:var(--cream)}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(246,243,238,.78);padding:72px 0 32px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{font-size:14px;line-height:1.85;margin-top:16px;color:rgba(246,243,238,.62)}
.footer-col h4{color:var(--cream);font-size:14px;letter-spacing:.06em;margin-bottom:18px}
.footer-col ul li{font-size:14px;margin-bottom:11px;color:rgba(246,243,238,.66)}
.footer-col ul li a{transition:color .18s var(--ease)}
.footer-col ul li a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(246,243,238,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;letter-spacing:.04em;color:rgba(246,243,238,.5);
}

/* 移动底部 Tab */
.mobile-tabbar{display:none}
@media (max-width:767px){
  body{padding-bottom:72px}
  .mobile-tabbar{
    display:grid;grid-template-columns:repeat(4,1fr);
    position:fixed;left:0;right:0;bottom:0;z-index:90;
    background:var(--ink);border-top:1px solid rgba(246,243,238,.14);
    padding:8px 6px 10px;
  }
  .mobile-tabbar a{
    display:flex;flex-direction:column;align-items:center;gap:4px;
    font-size:12px;color:rgba(246,243,238,.6);padding:6px 0;position:relative;
  }
  .mobile-tabbar a svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8}
  .mobile-tabbar a.is-active{color:var(--lime)}
  .mobile-tabbar a.is-active::before{
    content:"";position:absolute;top:-9px;left:50%;transform:translateX(-50%);
    width:32px;height:2px;border-radius:2px;background:var(--lime);
  }
}

/* 进场动画 */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.in{opacity:1;transform:none;transition:opacity .32s var(--ease),transform .32s var(--ease)}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* 响应式 */
@media (max-width:1280px){
  .article-layout{grid-template-columns:minmax(0,720px) 220px;gap:40px}
}
@media (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-primary{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;max-width:760px;margin:0 auto}
  .toc{display:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .header-inner{height:66px}
  .nav-drawer{top:66px}
  .crumbs{padding-top:22px}
  .article-wrap{padding:40px 0 0}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:22px;margin-top:38px}
  .article-body h3{font-size:18px}
  .related{padding-top:56px}
  .cta-band{margin-top:64px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:48px 0}
  .site-footer{padding:56px 0 28px}
  .footer-grid{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .foot-actions .btn{width:100%}
}
@media (max-width:520px){
  .article-head h1{font-size:26px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .crumbs .now{max-width:100%}
}

/* roulang page: category2 */
:root{
  --ink:#10231C;
  --ink-deep:#0C1A14;
  --lime:#C8F03C;
  --orange:#FF6A2B;
  --sand:#F6F3EE;
  --white:#FFFFFF;
  --line:#E4E0D8;
  --text:#3A4741;
  --muted:#6B7A73;
  --radius-card:14px;
  --radius-big:20px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(16,35,28,.06),0 8px 24px -12px rgba(16,35,28,.18);
  --shadow-lg:0 24px 48px -20px rgba(16,35,28,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --font-sans:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"DIN Alternate","JetBrains Mono","SFMono-Regular",Consolas,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--sand);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:normal;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:900;letter-spacing:-.02em;line-height:1.15;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input,textarea,select{font-family:inherit;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px;}
::selection{background:var(--lime);color:var(--ink);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink);
  border-bottom:1px solid rgba(246,243,238,.08);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:var(--lime);color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-weight:900;font-size:19px;letter-spacing:-.03em;
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text .line-1{color:#F6F3EE;font-size:17px;font-weight:900;letter-spacing:-.01em;}
.brand-text .line-2{color:var(--lime);font-size:11px;font-weight:700;letter-spacing:.22em;margin-top:3px;}

.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  color:rgba(246,243,238,.78);
  font-size:15px;font-weight:600;
  border-radius:8px;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left center;
  transition:transform .18s var(--ease);
}
.nav-link:hover{color:#F6F3EE;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--lime);}
.nav-link.active::after{transform:scaleX(1);}

.header-cta{
  margin-left:16px;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--lime);color:var(--ink);
  font-weight:800;font-size:14px;
  padding:11px 20px;border-radius:999px;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.header-cta:hover{background:#F6F3EE;color:var(--ink);transform:translateY(-2px);}
.header-cta .arrow{transition:transform .2s var(--ease);}
.header-cta:hover .arrow{transform:translateX(4px);}

.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:10px;
  border:1px solid rgba(246,243,238,.2);
  align-items:center;justify-content:center;
  background:rgba(246,243,238,.04);
  margin-left:auto;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:#F6F3EE;position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#F6F3EE;
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:800;
  padding:14px 26px;border-radius:999px;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  white-space:nowrap;
}
.btn .arrow{transition:transform .22s var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--ink);color:var(--lime);transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--lime);transform:translateY(-2px);}
.btn-light{background:transparent;color:#F6F3EE;border:1.5px solid rgba(246,243,238,.4);}
.btn-light:hover{border-color:var(--lime);color:var(--lime);}
.btn:disabled,.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none !important;box-shadow:none;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--ink);font-weight:800;font-size:15px;
  border-bottom:2px solid var(--lime);padding-bottom:3px;
}
.btn-text:hover{color:var(--muted);}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.04em;color:var(--muted);
  padding:20px 0 0;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:var(--ink);font-weight:700;}
.breadcrumb.light{color:rgba(246,243,238,.7);}
.breadcrumb.light a{color:rgba(246,243,238,.7);}
.breadcrumb.light a:hover{color:var(--lime);}
.breadcrumb.light .current{color:var(--lime);}

/* ============ Hero（浅色砂白） ============ */
.cat-hero{
  position:relative;
  background:
    linear-gradient(180deg,#FFFFFF 0%,var(--sand) 100%);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(16,35,28,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(16,35,28,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0));
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:1;}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding:44px 0 84px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:800;letter-spacing:.04em;
  color:var(--ink);
  background:rgba(200,240,60,.4);
  border:1px solid rgba(16,35,28,.08);
  padding:6px 14px;border-radius:999px;
  margin-bottom:20px;
}
.eyebrow.on-dark{background:rgba(200,240,60,.14);color:var(--lime);border-color:rgba(200,240,60,.28);}
.cat-hero h1{
  font-size:clamp(34px,5vw,58px);
  margin-bottom:18px;
}
.cat-hero h1 em{
  font-style:normal;
  background:linear-gradient(180deg,transparent 62%,rgba(200,240,60,.75) 62%);
  padding:0 2px;
}
.hero-lead{
  font-size:18px;line-height:1.8;color:var(--text);
  max-width:560px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px 44px;
  border-top:1px solid var(--line);padding-top:24px;
}
.hero-stats li{display:flex;flex-direction:column;gap:4px;}
.hero-stats .num{
  font-family:var(--font-mono);font-size:26px;font-weight:800;color:var(--ink);
  display:flex;align-items:center;gap:8px;
}
.hero-stats .num::before{
  content:"";width:18px;height:3px;background:var(--lime);border-radius:2px;flex:0 0 auto;
}
.hero-stats .cap{font-size:13px;color:var(--muted);letter-spacing:.04em;}

.hero-visual{position:relative;}
.hero-visual .frame{
  position:relative;border-radius:var(--radius-big);overflow:hidden;
  box-shadow:var(--shadow-lg);
  border:1px solid var(--line);
}
.hero-visual .frame img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-visual .frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,35,28,.28),rgba(16,35,28,.42));
}
.visual-card{
  position:absolute;right:-12px;bottom:-18px;
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:18px 20px;box-shadow:var(--shadow-sm);
  min-width:196px;
}
.visual-card .t{font-size:12px;letter-spacing:.04em;color:var(--muted);margin-bottom:8px;}
.visual-card .v{font-family:var(--font-mono);font-size:24px;font-weight:800;color:var(--ink);}
.visual-card .bar{
  height:6px;border-radius:999px;background:var(--line);margin-top:10px;overflow:hidden;
}
.visual-card .bar i{display:block;height:100%;width:78%;background:var(--lime);border-radius:999px;}

/* ============ 通用板块 ============ */
.section{padding:104px 0;}
.section.tight{padding:72px 0;}
.section.alt{background:#FBF9F6;}
.section.dark{background:var(--ink-deep);color:rgba(246,243,238,.82);}
.section.dark h2,.section.dark h3{color:#F6F3EE;}
.section-head{max-width:720px;margin-bottom:52px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-label{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:.14em;
  color:var(--muted);text-transform:uppercase;margin-bottom:14px;
}
.section.dark .section-label{color:var(--lime);}
.section h2{font-size:clamp(26px,3.4vw,38px);margin-bottom:16px;}
.section-lead{font-size:17px;color:var(--muted);line-height:1.8;}
.section.dark .section-lead{color:rgba(246,243,238,.72);}

/* ============ 介绍 + 图文混排 ============ */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.split.reverse .split-media{order:2;}
.split-media{
  border-radius:var(--radius-big);overflow:hidden;
  box-shadow:var(--shadow-sm);border:1px solid var(--line);
  background:var(--white);
}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.split-media figcaption{
  font-size:13px;color:var(--muted);padding:14px 18px;
  border-top:1px solid var(--line);letter-spacing:.04em;
}
.split-body h3{font-size:clamp(22px,2.6vw,28px);margin-bottom:16px;}
.split-body p{color:var(--text);}
.check-list{margin-top:24px;display:grid;gap:12px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text);
}
.check-list li::before{
  content:"";flex:0 0 auto;width:18px;height:18px;margin-top:5px;
  border-radius:6px;background:var(--lime);
  background-image:linear-gradient(135deg,rgba(16,35,28,.16),transparent);
  box-shadow:inset 0 0 0 1px rgba(16,35,28,.1);
}
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px;
}
.stat-strip div{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:16px 18px;
}
.stat-strip .n{font-family:var(--font-mono);font-size:22px;font-weight:800;color:var(--ink);}
.stat-strip .c{font-size:13px;color:var(--muted);letter-spacing:.04em;}

/* ============ 要点卡网格 ============ */
.card-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.feature-card{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:30px 28px;
  box-shadow:var(--shadow-sm);
  transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease);
  display:flex;flex-direction:column;gap:12px;
}
.feature-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(200,240,60,.7);
}
.feature-icon{
  width:46px;height:46px;border-radius:12px;
  background:rgba(200,240,60,.35);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-weight:800;color:var(--ink);font-size:15px;
  margin-bottom:6px;
}
.feature-card h3{font-size:19px;}
.feature-card p{font-size:15px;color:var(--muted);margin:0;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:8px;}
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;letter-spacing:.04em;font-weight:700;
  padding:5px 12px;border-radius:999px;
  background:var(--sand);color:var(--muted);border:1px solid var(--line);
}
.tag.lime{background:rgba(200,240,60,.38);color:var(--ink);border-color:rgba(16,35,28,.08);}
.tag.orange{background:rgba(255,106,43,.12);color:#B4410F;border-color:rgba(255,106,43,.28);}

/* ============ 流程 / 时间线 ============ */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;
}
.flow-step{
  position:relative;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform .32s var(--ease),box-shadow .32s var(--ease);
}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.flow-step::after{
  content:"";position:absolute;top:50%;right:-22px;width:22px;
  border-top:2px dashed rgba(16,35,28,.22);
}
.flow-step:last-child::after{display:none;}
.flow-step .step-n{
  font-family:var(--font-mono);font-size:13px;font-weight:800;color:var(--ink);
  background:var(--lime);border-radius:999px;padding:4px 12px;display:inline-block;
  margin-bottom:14px;
}
.flow-step h3{font-size:18px;margin-bottom:8px;}
.flow-step p{font-size:15px;color:var(--muted);margin:0;}

/* ============ FAQ ============ */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--white);margin-bottom:14px;overflow:hidden;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item:hover{border-color:rgba(16,35,28,.22);}
.faq-item[open]{box-shadow:var(--shadow-sm);border-color:rgba(200,240,60,.85);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:18px;font-weight:800;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .mark{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  background:var(--sand);color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;transition:transform .24s var(--ease),background .24s var(--ease);
}
.faq-item[open] summary .mark{background:var(--lime);transform:rotate(45deg);}
.faq-body{padding:0 24px 22px;font-size:15px;color:var(--text);line-height:1.85;}

/* ============ CTA ============ */
.cta-band{
  background:var(--ink-deep);
  border-bottom:1px solid var(--lime);
  padding:72px 0;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-inner h2{color:#F6F3EE;font-size:clamp(24px,3vw,34px);margin-bottom:10px;}
.cta-inner p{color:rgba(246,243,238,.72);font-size:16px;margin:0;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);color:rgba(246,243,238,.72);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(246,243,238,.1);
}
.footer-brand p{font-size:14px;line-height:1.85;margin-top:14px;color:rgba(246,243,238,.62);}
.footer-col h4{color:#F6F3EE;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14px;color:rgba(246,243,238,.62);}
.footer-col a{font-size:14px;color:rgba(246,243,238,.72);}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:24px;font-size:13px;color:rgba(246,243,238,.5);letter-spacing:.04em;
  flex-wrap:wrap;
}

/* ============ 移动底部 Tab ============ */
.tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:rgba(12,26,20,.98);
  border-top:1px solid rgba(246,243,238,.12);
  backdrop-filter:blur(8px);
  padding:6px 8px calc(6px + env(safe-area-inset-bottom,0px));
}
.tabbar ul{display:grid;grid-template-columns:repeat(4,1fr);}
.tabbar a{
  position:relative;
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:8px 4px 6px;font-size:11px;font-weight:700;
  color:rgba(246,243,238,.6);letter-spacing:.02em;
}
.tabbar a::before{
  content:"";position:absolute;top:-6px;left:50%;transform:translateX(-50%) scaleX(0);
  width:26px;height:2px;background:var(--lime);transition:transform .2s var(--ease);
}
.tabbar a .ico{width:20px;height:20px;display:block;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.tabbar a.active{color:var(--lime);}
.tabbar a.active::before{transform:translateX(-50%) scaleX(1);}

/* ============ 进场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.in{
  opacity:1;transform:none;
  transition:opacity .32s var(--ease),transform .32s var(--ease);
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal,.reveal.in{opacity:1;transform:none;transition:none;}
  .btn:hover,.feature-card:hover,.flow-step:hover,.header-cta:hover{transform:none;}
  .btn:hover .arrow,.header-cta:hover .arrow{transform:none;}
}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .container{max-width:1320px;}
}
@media (max-width:1024px){
  .main-nav,.header-cta{display:none;}
  .nav-toggle{display:flex;}
  .site-header.open .main-nav{
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    position:absolute;left:0;right:0;top:100%;
    background:var(--ink);
    padding:14px 20px 22px;
    border-bottom:1px solid rgba(246,243,238,.12);
    box-shadow:0 24px 40px -20px rgba(0,0,0,.6);
  }
  .site-header.open .nav-link{padding:14px 12px;font-size:16px;}
  .nav-toggle{margin-left:auto;}
  .header-inner{position:relative;}
  .hero-grid{grid-template-columns:1fr;gap:44px;padding:32px 0 68px;}
  .hero-visual{max-width:640px;}
  .visual-card{right:8px;bottom:-14px;}
  .split{grid-template-columns:1fr;gap:36px;}
  .split.reverse .split-media{order:0;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:repeat(2,1fr);gap:20px;}
  .flow-step::after{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:84px 0;}
}
@media (max-width:768px){
  body{padding-bottom:72px;}
  .tabbar{display:block;}
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .section.tight{padding:52px 0;}
  .section-head{margin-bottom:36px;}
  .card-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;gap:12px;}
  .hero-stats{gap:16px 28px;}
  .hero-stats .num{font-size:22px;}
  .cta-inner{flex-direction:column;align-items:flex-start;text-align:left;gap:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .hero-visual .frame img{aspect-ratio:16/11;}
  .visual-card{position:static;margin-top:16px;right:auto;bottom:auto;min-width:0;}
  .split-media img{aspect-ratio:16/10;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:32px;}
  .hero-lead{font-size:16px;}
  .btn{width:100%;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .cta-actions{width:100%;flex-direction:column;}
  .faq-item summary{font-size:16px;padding:18px 18px;}
  .faq-body{padding:0 18px 20px;}
  .feature-card{padding:24px 22px;}
  .flow-step{padding:22px 20px;}
  .brand-text .line-1{font-size:15px;}
}

/* roulang page: category1 */
:root{
  --ink:#10231C;
  --ink-deep:#0C1A14;
  --lime:#C8F03C;
  --lime-soft:rgba(200,240,60,.14);
  --orange:#FF6A2B;
  --sand:#F6F3EE;
  --white:#FFFFFF;
  --line:#E4E0D8;
  --text:#3A4741;
  --muted:#6B7A73;
  --radius-card:14px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,35,28,.06), 0 8px 24px -12px rgba(16,35,28,.18);
  --shadow-2:0 24px 48px -20px rgba(16,35,28,.28);
  --sans:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono","DIN Alternate","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:2px;
  border-radius:4px;
}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;font-weight:900;letter-spacing:-.02em;line-height:1.18;color:var(--ink);}
h1{font-size:clamp(32px,6vw,54px);}
h2{font-size:clamp(26px,3.4vw,36px);}
h3{font-size:clamp(18px,2vw,22px);}
h4{font-size:16px;letter-spacing:0;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--mono);letter-spacing:.02em;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1320px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink);
  border-bottom:1px solid rgba(246,243,238,.10);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:68px;
}
.logo{display:flex;flex-direction:column;line-height:1.1;flex:0 0 auto;}
.logo .logo-top{font-size:17px;font-weight:900;color:var(--sand);letter-spacing:.02em;}
.logo .logo-bottom{font-size:11px;color:var(--lime);letter-spacing:.22em;font-weight:700;margin-top:3px;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  font-weight:600;
  color:rgba(246,243,238,.78);
  border-radius:8px;
  transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left center;
  transition:transform .18s cubic-bezier(.22,1,.36,1);
}
.nav-link:hover{color:var(--sand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--sand);}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid rgba(246,243,238,.24);
  align-items:center;justify-content:center;
  flex:0 0 auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--sand);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--sand);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;
  font-size:15px;font-weight:700;
  border-radius:var(--radius-btn);
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn .arrow{transition:transform .22s cubic-bezier(.22,1,.36,1);}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:0 8px 20px -12px rgba(16,35,28,.6);}
.btn-primary:hover{background:var(--ink);color:var(--sand);}
.btn-primary:hover .arrow{transform:translateX(4px);}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--sand);}
.btn-ghost-light{background:transparent;color:var(--sand);border:1.5px solid rgba(246,243,238,.4);}
.btn-ghost-light:hover{background:var(--sand);color:var(--ink);border-color:var(--sand);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn:disabled,.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--ink);font-weight:700;font-size:15px;
}
.btn-text .arrow{transition:transform .22s cubic-bezier(.22,1,.36,1);}
.btn-text:hover{color:var(--orange);}
.btn-text:hover .arrow{transform:translateX(4px);}

/* ============ 通用区块 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--white);}
.section-dark{background:var(--ink-deep);color:var(--sand);}
.section-dark h2,.section-dark h3{color:var(--sand);}
.section-head{max-width:760px;margin-bottom:48px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);display:block;}
.section-dark .eyebrow{color:rgba(246,243,238,.6);}
.lead{font-size:17px;color:var(--text);line-height:1.85;}
.section-dark .lead{color:rgba(246,243,238,.76);}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ============ 分类页 Hero ============ */
.cat-hero{
  position:relative;
  background:var(--ink);
  color:var(--sand);
  padding:64px 0 72px;
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.28;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(12,26,20,.94) 0%,rgba(12,26,20,.74) 52%,rgba(12,26,20,.5) 100%);
}
.cat-hero .container{position:relative;z-index:1;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.04em;color:rgba(246,243,238,.62);
  margin-bottom:28px;
}
.breadcrumb a{color:rgba(246,243,238,.62);}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--sand);font-weight:700;}
.cat-hero h1{color:var(--sand);max-width:760px;}
.cat-hero .cat-lead{
  max-width:620px;margin:20px 0 0;
  font-size:17px;line-height:1.8;color:rgba(246,243,238,.78);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;margin-top:48px;padding-top:28px;
  border-top:1px solid rgba(246,243,238,.14);
  max-width:760px;
}
.stat-num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--lime);letter-spacing:-.01em;}
.stat-label{font-size:13px;color:rgba(246,243,238,.62);letter-spacing:.04em;margin-top:6px;}

/* ============ 图文混排 ============ */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.split.reverse .split-media{order:2;}
.split-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s cubic-bezier(.22,1,.36,1);}
.split-media:hover img{transform:scale(1.03);}
.split-media .media-tag{
  position:absolute;left:16px;top:16px;
  background:var(--lime);color:var(--ink);
  font-size:12px;font-weight:800;letter-spacing:.06em;
  padding:6px 12px;border-radius:999px;
}
.split-body h3{margin-bottom:14px;}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform .28s cubic-bezier(.22,1,.36,1),box-shadow .28s ease,border-color .28s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(16,35,28,.16);}
.card-icon{
  width:44px;height:44px;border-radius:12px;
  background:var(--lime-soft);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-weight:700;color:var(--ink);
  margin-bottom:18px;font-size:15px;
}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{font-size:15px;color:var(--muted);margin:0;}
.card-meta{margin-top:18px;font-size:13px;letter-spacing:.04em;color:var(--muted);}

/* ============ 标签 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.tag{
  display:inline-flex;align-items:center;
  padding:7px 14px;border-radius:999px;
  background:var(--sand);border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--ink);
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.tag:hover{background:var(--lime-soft);border-color:rgba(16,35,28,.2);}
.tag-lime{background:var(--lime-soft);border-color:rgba(16,35,28,.14);}

/* ============ 数据列表 ============ */
.data-list{border-top:1px solid var(--line);}
.data-row{
  display:grid;grid-template-columns:120px 1fr auto;
  gap:20px;align-items:center;
  padding:22px 4px;
  border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.data-row:hover{background:rgba(200,240,60,.08);}
.data-time{font-family:var(--mono);font-size:14px;color:var(--muted);letter-spacing:.02em;}
.data-title{font-size:16px;font-weight:700;color:var(--ink);}
.data-note{font-size:13px;color:var(--muted);margin-top:4px;}
.data-state{
  font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:5px 12px;border-radius:999px;
  background:var(--sand);color:var(--muted);white-space:nowrap;
}
.data-state.live{background:rgba(255,106,43,.14);color:#C64A12;}
.data-state.done{background:var(--lime-soft);color:var(--ink);}

/* ============ FAQ ============ */
.faq{max-width:800px;margin:0 auto;}
.faq-item{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:rgba(16,35,28,.18);}
.faq-item.open{box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 26px;text-align:left;
  font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-.01em;
}
.faq-mark{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--sand);color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
  transition:transform .26s cubic-bezier(.22,1,.36,1),background .26s ease;
}
.faq-item.open .faq-mark{background:var(--lime);transform:rotate(135deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s cubic-bezier(.22,1,.36,1);
}
.faq-a-inner{padding:0 26px 24px;font-size:15px;color:var(--text);line-height:1.85;}

/* ============ 表单 ============ */
.form-panel{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:36px;
  box-shadow:var(--shadow-1);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--muted);}
.field input,.field select{
  height:48px;padding:0 14px;
  font-family:inherit;font-size:15px;color:var(--ink);
  background:var(--sand);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  width:100%;
}
.field input:focus,.field select:focus{
  outline:none;background:var(--white);
  border-color:var(--ink);
  box-shadow:0 0 0 2px rgba(200,240,60,.9);
}
.field.error input{border-color:var(--orange);}
.field .err-msg{font-size:13px;color:var(--orange);display:none;}
.field.error .err-msg{display:block;}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:26px;}
.form-hint{font-size:13px;color:var(--muted);}

/* ============ CTA ============ */
.cta-band{
  background:var(--ink-deep);
  color:var(--sand);
  padding:80px 0;
  border-bottom:1px solid var(--lime);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;}
.cta-inner h2{color:var(--sand);max-width:620px;}
.cta-inner p{color:rgba(246,243,238,.72);margin-top:12px;max-width:560px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:var(--sand);padding:72px 0 32px;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(246,243,238,.14);
}
.footer-brand .logo-mark{display:block;margin-bottom:16px;}
.footer-brand p{font-size:14px;color:rgba(246,243,238,.68);line-height:1.8;max-width:340px;}
.footer-col h4{color:var(--sand);font-size:14px;letter-spacing:.08em;margin-bottom:18px;font-weight:800;}
.footer-col ul li{font-size:14px;color:rgba(246,243,238,.68);margin-bottom:11px;}
.footer-col ul li a{color:rgba(246,243,238,.68);}
.footer-col ul li a:hover{color:var(--lime);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:24px;font-size:13px;color:rgba(246,243,238,.52);letter-spacing:.04em;
}

/* ============ 移动底部 Tab ============ */
.tab-bar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:var(--ink);
  border-top:1px solid rgba(246,243,238,.14);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-bar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  padding:10px 4px 12px;font-size:11px;
  color:rgba(246,243,238,.6);position:relative;
  transition:color .2s ease;
}
.tab-bar a svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;}
.tab-bar a.active{color:var(--lime);}
.tab-bar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:2px;background:var(--lime);border-radius:0 0 2px 2px;
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s cubic-bezier(.22,1,.36,1),transform .42s cubic-bezier(.22,1,.36,1);}
.reveal.visible{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .main-nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:var(--ink);
    padding:14px 20px 22px;
    border-top:1px solid rgba(246,243,238,.12);
    display:none;
    margin-left:0;
  }
  .main-nav.open{display:flex;}
  .nav-link{padding:13px 8px;font-size:16px;}
  .nav-link::after{display:none;}
  .nav-link.active{color:var(--lime);}
  .nav-toggle{display:inline-flex;}
  .header-actions{margin-left:auto;}
  .header-inner{gap:14px;}
  .split{gap:36px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{padding-bottom:72px;}
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .cat-hero{padding:44px 0 56px;}
  .hero-stats{grid-template-columns:1fr 1fr;gap:18px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split.reverse .split-media{order:0;}
  .card-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;text-align:left;}
  .data-row{grid-template-columns:1fr;gap:8px;padding:18px 2px;}
  .btn{width:100%;}
  .hero-actions .btn{width:auto;flex:1 1 46%;}
  .form-panel{padding:26px 20px;}
  .form-grid{grid-template-columns:1fr;}
  .faq-q{padding:18px 20px;font-size:16px;}
  .faq-a-inner{padding:0 20px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .tab-bar{display:flex;}
  .header-actions .btn{display:none;}
}
@media (max-width:479px){
  .hero-actions .btn{flex:1 1 100%;}
  .hero-stats{grid-template-columns:1fr;}
  .stat-num{font-size:22px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --ink:#10231C;
  --ink-soft:#1B3229;
  --lime:#C8F03C;
  --orange:#FF6A2B;
  --bg:#F6F3EE;
  --card:#FFFFFF;
  --dark:#0C1A14;
  --line:#E4E0D8;
  --text:#3A4741;
  --muted:#6B7A73;
  --white:#F6F3EE;
  --radius-card:14px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(16,35,28,.06), 0 8px 24px -12px rgba(16,35,28,.18);
  --shadow-hover:0 24px 48px -20px rgba(16,35,28,.28);
  --mono:"DIN Alternate","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:900;letter-spacing:-.02em;line-height:1.15;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){ .container{max-width:1320px;} }

.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:#FFFDFA;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--dark{background:var(--dark);color:var(--white);}
.section--dark h2,.section--dark h3{color:var(--white);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:700;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);display:inline-block;}
.section--dark .eyebrow{color:rgba(246,243,238,.7);}

.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:clamp(26px,3.4vw,36px);margin-bottom:16px;}
.section-head p{color:var(--muted);font-size:16px;}
.section--dark .section-head p{color:rgba(246,243,238,.72);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:800;letter-spacing:.01em;
  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);
  white-space:nowrap;
}
.btn--primary{background:var(--lime);color:var(--ink);}
.btn--primary:hover{background:var(--ink);color:var(--lime);transform:translateX(2px);box-shadow:var(--shadow-hover);}
.btn--ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn--ghost:hover{background:var(--ink);color:var(--lime);}
.btn--ghost-light{background:transparent;border-color:rgba(246,243,238,.45);color:var(--white);}
.btn--ghost-light:hover{background:var(--white);color:var(--ink);border-color:var(--white);}
.btn--sm{min-height:42px;padding:0 18px;font-size:14px;}
.btn .arrow{transition:transform .22s var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;
}

.textlink{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:800;color:var(--ink);border-bottom:2px solid var(--lime);
  padding-bottom:2px;transition:gap .22s var(--ease),color .22s var(--ease);
}
.textlink:hover{gap:14px;color:var(--ink-soft);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink);
  border-bottom:1px solid rgba(246,243,238,.10);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:72px;
}
.logo{
  display:flex;align-items:baseline;gap:8px;flex-shrink:0;
}
.logo-line1{
  font-size:19px;font-weight:900;letter-spacing:-.01em;color:var(--white);
}
.logo-line2{
  font-size:11px;letter-spacing:.18em;color:var(--lime);font-weight:700;
}
.main-nav{
  display:flex;align-items:center;gap:6px;margin-left:auto;
}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;font-size:15px;font-weight:700;
  color:rgba(246,243,238,.82);border-radius:8px;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left center;
  transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--white);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--white);}
.nav-link.active::after{transform:scaleX(1);}
.header-cta{margin-left:8px;}

.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:10px;border:1px solid rgba(246,243,238,.25);
  background:transparent;cursor:pointer;position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;background:var(--white);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle span:nth-child(1){top:15px;}
.nav-toggle span:nth-child(2){top:21px;}
.nav-toggle span:nth-child(3){top:27px;}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.04em;color:rgba(246,243,238,.62);
  margin-bottom:20px;
}
.crumbs a{color:rgba(246,243,238,.82);}
.crumbs a:hover{color:var(--lime);}
.crumbs .sep{opacity:.5;}
.crumbs .current{color:var(--lime);}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--dark);
  color:var(--white);
  padding:80px 0 88px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.20;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,var(--lime),rgba(200,240,60,0));
}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{
  font-size:clamp(32px,5vw,58px);
  color:var(--white);
  max-width:900px;
  margin-bottom:20px;
}
.page-hero .lede{
  max-width:640px;font-size:17px;line-height:1.8;
  color:rgba(246,243,238,.78);
  margin-bottom:32px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;font-weight:700;
  background:rgba(246,243,238,.10);
  color:rgba(246,243,238,.9);
  border:1px solid rgba(246,243,238,.16);
}
.tag--lime{background:rgba(200,240,60,.14);color:var(--lime);border-color:rgba(200,240,60,.34);}
.tag--sand{background:#F1EDE5;color:var(--ink);border-color:var(--line);}
.tag--orange{background:rgba(255,106,43,.12);color:var(--orange);border-color:rgba(255,106,43,.3);}

/* ---------- 概览区：正文 + 摘要边栏 ---------- */
.overview-grid{
  display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);
  gap:56px;align-items:start;
}
.overview-body h2{font-size:clamp(24px,3vw,32px);margin-bottom:20px;}
.overview-body p{font-size:16px;color:var(--text);}
.overview-body p + p{margin-top:16px;}

.aside-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-sm);
  position:sticky;top:100px;
}
.aside-card h3{font-size:19px;margin-bottom:18px;}
.aside-list li{
  display:flex;gap:12px;padding:14px 0;
  border-bottom:1px dashed var(--line);
  font-size:15px;
}
.aside-list li:last-child{border-bottom:0;padding-bottom:0;}
.aside-list .idx{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--ink);
  background:var(--lime);border-radius:999px;
  width:26px;height:26px;flex:0 0 26px;
  display:inline-flex;align-items:center;justify-content:center;
}

/* ---------- 图文混排 ---------- */
.split{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;align-items:center;
}
.split--reverse .split-media{order:2;}
.split--reverse .split-text{order:1;}
.split-text h2{font-size:clamp(24px,3vw,32px);margin-bottom:18px;}
.split-text p{font-size:16px;}
.split-media{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  position:relative;
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.media-caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;
  background:linear-gradient(180deg,rgba(12,26,20,0),rgba(12,26,20,.86));
  color:var(--white);font-size:13px;letter-spacing:.04em;
}
.check-list{margin-top:22px;}
.check-list li{
  position:relative;padding-left:30px;margin-bottom:14px;font-size:15px;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:14px;height:8px;border-left:2px solid var(--ink);border-bottom:2px solid var(--ink);
  transform:rotate(-45deg);
}

/* ---------- 步骤流程 ---------- */
.steps{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;margin-top:8px;
}
.step{
  position:relative;padding:0 26px;
  border-left:1px dashed var(--line);
}
.step:first-child{border-left:0;padding-left:0;}
.step:last-child{padding-right:0;}
.step-num{
  font-family:var(--mono);font-size:34px;font-weight:800;color:var(--ink);
  line-height:1;margin-bottom:14px;display:block;
}
.step-num::after{
  content:"";display:block;width:34px;height:3px;background:var(--lime);margin-top:10px;
}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{font-size:15px;color:var(--muted);}

/* ---------- 要点卡网格 ---------- */
.card-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px;
  box-shadow:var(--shadow-sm);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D6D0C4;}
.card-icon{
  width:44px;height:44px;border-radius:12px;
  background:rgba(200,240,60,.28);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;
}
.card-icon svg{width:22px;height:22px;stroke:var(--ink);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{font-size:15px;color:var(--muted);}
.card .meta{
  margin-top:16px;font-size:12px;letter-spacing:.08em;color:var(--muted);
  font-family:var(--mono);
}

/* ---------- 数据条 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;margin-top:8px;
}
.metric{
  border-top:2px solid var(--ink);
  padding-top:18px;
}
.metric .value{
  font-family:var(--mono);font-size:34px;font-weight:800;color:var(--ink);
  line-height:1.1;display:block;
}
.metric .label{font-size:14px;color:var(--muted);margin-top:8px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item[open]{border-color:#CFC8BB;box-shadow:var(--shadow-sm);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:18px;font-weight:800;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  position:relative;width:22px;height:22px;flex:0 0 22px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-icon::before{left:0;right:0;top:10px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-body{padding:0 24px 22px;font-size:15px;color:var(--text);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--dark);
  color:var(--white);
  padding:72px 0;
  border-bottom:1px solid var(--lime);
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-inner h2{font-size:clamp(24px,3vw,34px);color:var(--white);margin-bottom:10px;}
.cta-inner p{color:rgba(246,243,238,.75);font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(246,243,238,.78);
  padding:72px 0 32px;
  font-size:15px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(246,243,238,.12);
}
.footer-brand .logo-mark{display:block;margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(246,243,238,.62);max-width:340px;}
.footer-col h4{
  color:var(--white);font-size:14px;letter-spacing:.08em;margin-bottom:18px;font-weight:800;
}
.footer-col ul li{margin-bottom:12px;font-size:14px;color:rgba(246,243,238,.66);}
.footer-col a{color:rgba(246,243,238,.72);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:24px;font-size:13px;color:rgba(246,243,238,.5);
  flex-wrap:wrap;
}

/* ---------- 移动底部 Tab ---------- */
.tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:var(--ink);
  border-top:1px solid rgba(246,243,238,.12);
  padding:6px 0 8px;
}
.tabbar ul{display:grid;grid-template-columns:repeat(4,1fr);}
.tabbar a{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:6px 0 4px;font-size:11px;color:rgba(246,243,238,.6);
  transition:color .2s var(--ease);
}
.tabbar svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.tabbar a.active{color:var(--lime);}
.tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:2px;background:var(--lime);
}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;inset:72px 0 0 0;z-index:70;
  background:var(--ink);
  padding:24px;
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.drawer.open{opacity:1;transform:translateY(0);pointer-events:auto;}
.drawer a{
  display:block;padding:16px 4px;font-size:17px;font-weight:700;
  color:rgba(246,243,238,.86);border-bottom:1px solid rgba(246,243,238,.1);
}
.drawer a.active{color:var(--lime);}
.drawer .btn{margin-top:24px;width:100%;}

/* ---------- 动画 ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.in{opacity:1;transform:none;transition:opacity .32s var(--ease),transform .32s var(--ease);}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .overview-grid{gap:40px;}
}
@media (max-width:1024px){
  .site-header .main-nav,.header-cta{display:none;}
  .nav-toggle{display:block;}
  .overview-grid{grid-template-columns:1fr;gap:32px;}
  .aside-card{position:static;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split--reverse .split-media{order:0;}
  .split--reverse .split-text{order:0;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 0;}
  .step:nth-child(3){border-left:0;padding-left:0;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  body{padding-bottom:72px;}
  .tabbar{display:block;}
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .section--tight{padding:56px 0;}
  .page-hero{padding:56px 0 64px;}
  .page-hero h1{font-size:32px;}
  .page-hero .lede{font-size:16px;}
  .card-grid{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr;gap:20px;}
  .cta-inner{flex-direction:column;align-items:flex-start;text-align:left;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .drawer{inset:64px 0 0 0;}
}
@media (max-width:520px){
  .steps{grid-template-columns:1fr;gap:28px;}
  .step{border-left:0;padding-left:0;border-top:1px dashed var(--line);padding-top:24px;}
  .step:first-child{border-top:0;padding-top:0;}
  .header-inner{min-height:64px;}
  .logo-line1{font-size:17px;}
  .logo-line2{font-size:10px;}
  .faq-item summary{font-size:16px;padding:18px;}
  .faq-body{padding:0 18px 18px;}
}

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