/* roulang page: index */
:root{
  --brand:#0F1B16;
  --brand-soft:#16241D;
  --accent:#C6F24E;
  --accent-2:#FF5B2E;
  --bg:#F6F5F1;
  --surface:#FFFFFF;
  --line:#DCDAD3;
  --ink:#0F1B16;
  --ink-2:#4C534F;
  --ink-inv:#F2F1EC;
  --ink-inv-2:#A9B3AC;
  --radius:4px;
  --shadow-1:0 1px 2px rgba(15,27,22,.04);
  --shadow-2:0 10px 28px rgba(15,27,22,.10);
  --shell-w:248px;
  --shell-w-sm:72px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-en:"Inter","Archivo",-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-cn);font-size:17px;line-height:1.85;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;line-height:1.3}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.num{font-family:var(--font-en);font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* ============ 通用容器 ============ */
.container,.grid-container{width:100%;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:40px;padding-right:40px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{margin-bottom:44px;max-width:760px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.section-head h2::after{content:"";display:block;width:40px;height:4px;background:var(--accent);margin-top:14px;border-radius:2px}
.section-head p{margin-top:16px;color:var(--ink-2);font-size:16px;max-width:680px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--font-en);
  font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2);margin-bottom:18px
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);display:inline-block}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:var(--radius);
  font-size:15px;font-weight:700;border:1px solid transparent;line-height:1;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease
}
.btn i{font-size:13px;transition:transform .2s ease}
.btn-primary{background:var(--accent);color:var(--brand)}
.btn-primary:hover{background:#d2f96b;color:var(--brand);box-shadow:0 8px 20px rgba(198,242,78,.28)}
.btn-primary:hover i{transform:translateX(4px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink-inv);border-color:rgba(242,241,236,.42)}
.btn-ghost:hover{background:var(--ink-inv);color:var(--brand);border-color:var(--ink-inv)}
.btn-ghost:hover i{transform:translateX(4px)}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand);color:var(--ink-inv)}
.btn-outline:hover i{transform:translateX(4px)}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--brand);
  border-bottom:1px solid var(--line);padding-bottom:4px;transition:border-color .2s ease,color .2s ease
}
.link-more i{font-size:12px;transition:transform .2s ease}
.link-more:hover{border-color:var(--accent);color:var(--brand)}
.link-more:hover i{transform:translateX(4px)}

/* ============ 左侧导航 ============ */
.app-shell{
  position:fixed;left:0;top:0;bottom:0;width:var(--shell-w);background:var(--brand);
  display:flex;flex-direction:column;padding:30px 20px 26px;z-index:80;
  overflow-y:auto;overscroll-behavior:contain;
}
.shell-logo{display:flex;align-items:center;gap:11px;margin-bottom:6px}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:6px;background:var(--accent);color:var(--brand);
  display:grid;place-items:center;font-family:var(--font-en);font-weight:800;font-size:15px;letter-spacing:-.04em
}
.logo-text{font-size:17px;font-weight:800;color:var(--ink-inv);letter-spacing:-.01em;white-space:nowrap}
.shell-tag{
  font-family:var(--font-en);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-inv-2);margin:2px 0 30px;padding-left:49px
}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:var(--radius);
  color:var(--ink-inv-2);font-size:15px;font-weight:500;transition:background .12s ease,color .12s ease;min-height:44px
}
.side-nav a i{width:18px;text-align:center;font-size:15px;flex:0 0 18px}
.side-nav a:hover{background:rgba(242,241,236,.07);color:var(--ink-inv)}
.side-nav a.active{color:#fff;background:rgba(198,242,78,.10)}
.side-nav a.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:0 3px 3px 0;background:var(--accent)
}
.nav-text{white-space:nowrap}
.shell-cta{margin-top:auto;padding-top:28px}
.shell-cta .btn{width:100%;justify-content:center;padding:14px 18px}
.shell-note{margin-top:14px;font-size:12px;line-height:1.7;color:var(--ink-inv-2)}

/* 移动顶栏 */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;background:var(--brand);z-index:90;
  align-items:center;justify-content:space-between;padding:0 16px
}
.mobile-bar .logo-text{font-size:16px}
.nav-toggle{
  width:44px;height:44px;display:grid;place-items:center;background:transparent;border:1px solid rgba(242,241,236,.28);
  border-radius:var(--radius);color:var(--ink-inv);font-size:16px
}
.nav-toggle:hover{background:rgba(242,241,236,.08)}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;max-width:86vw;background:var(--brand);z-index:100;
  transform:translateX(-104%);transition:transform .28s cubic-bezier(.22,.61,.36,1);padding:24px 20px;overflow-y:auto
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer .side-nav a{font-size:16px;padding:14px}
.drawer-overlay{
  position:fixed;inset:0;background:rgba(15,27,22,.55);opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;z-index:95
}
.drawer-overlay.open{opacity:1;visibility:visible}
body.locked{overflow:hidden}

/* ============ 主内容 ============ */
.main{margin-left:var(--shell-w);min-height:100vh;display:flex;flex-direction:column}

/* ============ Hero ============ */
.hero{position:relative;background:var(--brand);overflow:hidden}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;opacity:.5;
  transform:scale(1.02)
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,27,22,.90) 0%,rgba(15,27,22,.74) 42%,rgba(15,27,22,.94) 100%)
}
.hero-inner{position:relative;z-index:2;padding-top:112px}
.hero-copy{max-width:780px}
.hero .eyebrow{color:var(--accent)}
.hero .eyebrow::before{background:var(--accent)}
.hero h1{
  font-size:clamp(30px,4.2vw,54px);font-weight:800;line-height:1.18;letter-spacing:-.02em;
  color:var(--ink-inv);margin-bottom:20px
}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{font-size:clamp(16px,1.5vw,19px);line-height:1.7;color:var(--ink-inv-2);max-width:600px;margin-bottom:34px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-stats{position:relative;z-index:2;margin-top:64px;border-top:1px solid rgba(242,241,236,.16)}
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-strip li{padding:28px 26px 34px;border-right:1px solid rgba(242,241,236,.12)}
.stat-strip li:first-child{padding-left:0}
.stat-strip li:last-child{border-right:none}
.stat-v{
  display:block;font-family:var(--font-en);font-size:clamp(28px,3.2vw,40px);font-weight:800;
  color:var(--accent);letter-spacing:-.03em;line-height:1.1
}
.stat-k{display:block;margin-top:10px;font-size:13px;font-weight:500;color:var(--ink-inv-2)}

/* ============ 痛点提问 ============ */
.pain-list{border-top:1px solid var(--line)}
.pain-item{border-bottom:1px solid var(--line)}
.pain-q{
  width:100%;display:flex;align-items:center;gap:16px;background:transparent;border:none;
  padding:26px 8px;text-align:left;font-size:18px;font-weight:700;color:var(--ink);line-height:1.5;
  transition:color .2s ease
}
.pain-q .dot{width:9px;height:9px;border-radius:50%;background:var(--accent-2);flex:0 0 9px;margin-top:7px}
.pain-q .pain-label{flex:1}
.pain-q .caret{
  width:32px;height:32px;flex:0 0 32px;border:1px solid var(--line);border-radius:var(--radius);
  display:grid;place-items:center;font-size:12px;color:var(--ink-2);transition:transform .24s ease,background .2s ease,color .2s ease,border-color .2s ease
}
.pain-q:hover{color:var(--brand)}
.pain-q:hover .caret{border-color:var(--brand)}
.pain-item.open .caret{transform:rotate(180deg);background:var(--brand);color:var(--accent);border-color:var(--brand)}
.pain-a{max-height:0;overflow:hidden;transition:max-height .3s cubic-bezier(.22,.61,.36,1)}
.pain-a-inner{
  padding:0 8px 28px 33px;border-top:1px solid var(--line);margin-top:-1px;padding-top:20px;
  background:linear-gradient(180deg,rgba(255,255,255,.6),rgba(255,255,255,0))
}
.pain-a-inner p{margin:0;color:var(--ink-2);font-size:16px;max-width:820px}
.pain-a-inner strong{color:var(--ink);font-weight:700}

/* ============ 方案卡片（错位） ============ */
.solution-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.sol-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);
  padding:30px;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease
}
.sol-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.sol-a{grid-column:span 7}
.sol-b{grid-column:span 5}
.sol-index{
  font-family:var(--font-en);font-size:34px;font-weight:800;color:var(--accent);
  letter-spacing:-.04em;line-height:1;text-shadow:0 0 0 var(--brand);-webkit-text-stroke:0
}
.sol-card h3{font-size:22px;font-weight:700;margin:16px 0 12px}
.sol-card > p{color:var(--ink-2);font-size:16px;margin-bottom:18px}
.sol-points{margin-bottom:22px}
.sol-points li{
  position:relative;padding-left:20px;font-size:15px;color:var(--ink-2);line-height:1.75;margin-bottom:8px
}
.sol-points li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:2px;background:var(--accent);border-radius:1px
}
.sol-card .link-more{margin-top:auto;align-self:flex-start}
.sol-media{margin-top:24px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.sol-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.sol-wide{grid-column:span 12;display:grid;grid-template-columns:1.05fr 1fr;gap:0;padding:0;overflow:hidden}
.sol-wide-body{padding:34px;display:flex;flex-direction:column}
.sol-wide-media{position:relative;background:var(--brand);min-height:100%}
.sol-wide-media img{width:100%;height:100%;aspect-ratio:auto;object-fit:cover;min-height:280px}
.sol-wide-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,27,22,.10),rgba(15,27,22,.02))}

/* ============ 深色数据区 ============ */
.stats-band{background:var(--brand);color:var(--ink-inv);padding:88px 0}
.stats-band .eyebrow{color:var(--accent)}
.stats-band .eyebrow::before{background:var(--accent)}
.stats-band h2{color:var(--ink-inv);font-size:clamp(24px,2.6vw,34px)}
.stats-band h2::after{content:"";display:block;width:40px;height:4px;background:var(--accent);margin-top:14px;border-radius:2px}
.stats-band .lead{color:var(--ink-inv-2);max-width:660px;margin-top:16px}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:56px;background:rgba(242,241,236,.14)}
.band-cell{background:var(--brand);padding:34px 28px}
.band-cell .band-num{
  display:block;font-family:var(--font-en);font-size:clamp(34px,3.8vw,50px);font-weight:800;
  color:var(--accent);letter-spacing:-.03em;line-height:1
}
.band-cell .band-num small{font-size:.5em;font-weight:700;margin-left:2px}
.band-cell .band-label{display:block;margin-top:14px;font-size:15px;font-weight:700;color:var(--ink-inv)}
.band-cell .band-src{display:block;margin-top:8px;font-size:13px;color:var(--ink-inv-2)}

/* ============ 资讯列表 ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.news-head .section-head{margin-bottom:0}
.news-grid{margin-left:-12px;margin-right:-12px}
.news-grid > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  height:100%;display:flex;flex-direction:column;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.news-thumb{display:block;background:var(--brand-soft);overflow:hidden}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:24px;display:flex;flex-direction:column;flex:1}
.badge{
  display:inline-block;font-size:12px;font-weight:700;padding:3px 10px;border-radius:2px;
  background:rgba(198,242,78,.35);color:#26330f;border:1px solid rgba(198,242,78,.7);
  margin-bottom:14px;align-self:flex-start;line-height:1.6
}
.news-card h3{font-size:19px;font-weight:700;line-height:1.5;margin-bottom:12px}
.news-card h3 a:hover{color:#3f5210}
.news-card p{font-size:15px;color:var(--ink-2);line-height:1.75;margin-bottom:18px}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-2);font-weight:500;border-top:1px solid var(--line);padding-top:14px
}
.news-meta i{margin-right:6px;font-size:12px}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius);background:var(--surface);
  padding:56px 32px;text-align:center
}
.empty-mark{
  width:72px;height:72px;margin:0 auto 20px;border-radius:var(--radius);background:var(--brand);
  display:grid;place-items:center;color:var(--accent);font-family:var(--font-en);font-size:22px;font-weight:800
}
.empty-state p{color:var(--ink-2);margin-bottom:18px}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);margin-bottom:12px;overflow:hidden;transition:box-shadow .2s ease}
.faq-item:hover{box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;background:transparent;
  border:none;padding:22px 24px;text-align:left;font-size:17px;font-weight:700;color:var(--ink);line-height:1.5
}
.faq-q .faq-icon{
  width:30px;height:30px;flex:0 0 30px;border-radius:50%;background:var(--bg);display:grid;place-items:center;
  font-size:12px;color:var(--ink);border:1px solid var(--line);transition:transform .24s ease,background .2s ease,color .2s ease
}
.faq-item.open .faq-icon{transform:rotate(180deg);background:var(--brand);color:var(--accent);border-color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s cubic-bezier(.22,.61,.36,1)}
.faq-a-inner{padding:0 24px 24px;border-top:1px solid var(--line);padding-top:18px;color:var(--ink-2);font-size:16px}
.faq-a-inner p{margin:0}

/* ============ CTA 区 ============ */
.cta-band{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:56px;display:grid;grid-template-columns:1.35fr .85fr;gap:40px;align-items:center;
  box-shadow:var(--shadow-1)
}
.cta-band h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:16px}
.cta-band p{color:var(--ink-2);margin-bottom:0;max-width:560px}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.cta-actions .btn{width:100%;justify-content:center}
.cta-hint{font-size:13px;color:var(--ink-2);display:flex;align-items:center;gap:8px}
.cta-hint i{color:var(--accent-2);font-size:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand);color:var(--ink-inv-2);padding:72px 0 26px;margin-top:auto}
.footer-cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(242,241,236,.14)}
.footer-brand .shell-logo{margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:280px;margin:0}
.footer-col h3{font-size:14px;font-weight:700;color:var(--ink-inv);margin-bottom:18px;letter-spacing:.02em}
.footer-col li{margin-bottom:11px}
.footer-col a,.footer-col span{font-size:14px;color:var(--ink-inv-2);transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;align-items:center;
  padding-top:24px;font-size:13px;color:var(--ink-inv-2)
}
.footer-bottom a:hover{color:var(--accent)}

/* ============ 弹层 ============ */
.modal{position:fixed;inset:0;z-index:120;display:none}
.modal.open{display:block}
.modal-overlay{position:absolute;inset:0;background:rgba(15,27,22,.55);opacity:0;transition:opacity .24s ease}
.modal.open .modal-overlay{opacity:1}
.modal-panel{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.97);width:calc(100% - 40px);
  max-width:520px;max-height:92vh;overflow-y:auto;background:var(--surface);border-radius:6px;padding:34px 32px 30px;
  box-shadow:0 30px 70px rgba(15,27,22,.35);opacity:0;transition:opacity .24s ease,transform .24s cubic-bezier(.22,.61,.36,1)
}
.modal.open .modal-panel{opacity:1;transform:translate(-50%,-50%) scale(1)}
.modal-close{
  position:absolute;right:12px;top:12px;width:44px;height:44px;border-radius:var(--radius);
  border:1px solid var(--line);background:transparent;color:var(--ink-2);font-size:16px;display:grid;place-items:center;
  transition:background .2s ease,color .2s ease,border-color .2s ease
}
.modal-close:hover{background:var(--brand);color:var(--accent);border-color:var(--brand)}
.modal-panel h3{font-size:21px;margin-bottom:10px}
.modal-sub{font-size:14px;color:var(--ink-2);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}
.field .req{color:var(--accent-2);margin-left:3px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--surface);color:var(--ink);font-size:15px;transition:border-color .2s ease,box-shadow .2s ease
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(76,83,79,.6)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:2px solid var(--accent);outline-offset:2px;border-color:var(--brand)
}
.modal-panel .btn-primary{width:100%;justify-content:center;padding:15px 26px}
.modal-panel .btn-primary[disabled]{opacity:.6;cursor:not-allowed}
.privacy-note{font-size:13px;color:var(--ink-2);margin:16px 0 0;line-height:1.75}
.form-tip{display:none;margin-top:14px;font-size:14px;color:var(--brand);font-weight:700}
.form-tip.show{display:block}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s cubic-bezier(.22,.61,.36,1),transform .24s cubic-bezier(.22,.61,.36,1)}
.reveal.is-in{opacity:1;transform:translateY(0)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container,.grid-container{padding-left:24px;padding-right:24px}
  .section{padding:72px 0}
  .app-shell{width:var(--shell-w-sm);padding:26px 12px 22px;overflow:visible}
  .app-shell .logo-text{display:none}
  .shell-tag{display:none}
  .side-nav a{justify-content:center;padding:12px 8px}
  .side-nav a .nav-text{
    position:absolute;left:60px;top:50%;transform:translateY(-50%);background:var(--brand);
    color:var(--ink-inv);padding:8px 14px;border-radius:var(--radius);font-size:14px;
    white-space:nowrap;opacity:0;visibility:hidden;transition:opacity .15s ease,visibility .15s ease;
    box-shadow:0 10px 24px rgba(0,0,0,.3);z-index:70
  }
  .side-nav a:hover .nav-text,.side-nav a:focus-visible .nav-text{opacity:1;visibility:visible}
  .shell-cta .btn span{display:none}
  .shell-cta .btn{padding:14px 0}
  .shell-cta .btn i{margin:0}
  .shell-note{display:none}
  .main{margin-left:var(--shell-w-sm)}
  .hero-inner{padding-top:88px}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-strip li{padding:22px 20px}
  .stat-strip li:nth-child(2){border-right:none}
  .stat-strip li:nth-child(1),.stat-strip li:nth-child(2){border-bottom:1px solid rgba(242,241,236,.12)}
  .stat-strip li:nth-child(3){padding-left:0}
  .band-grid{grid-template-columns:repeat(2,1fr)}
  .sol-a,.sol-b{grid-column:span 12}
  .sol-wide{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:40px;gap:28px}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container,.grid-container{padding-left:16px;padding-right:16px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .app-shell{display:none}
  .mobile-bar{display:flex}
  .main{margin-left:0;padding-top:64px}
  .hero-inner{padding-top:56px}
  .hero h1{font-size:clamp(28px,7.6vw,36px)}
  .hero-cta{gap:12px}
  .hero-cta .btn{width:100%;justify-content:center}
  .hero-stats{margin-top:44px}
  .stat-strip{grid-template-columns:1fr 1fr}
  .stat-strip li{padding:20px 14px 22px}
  .stat-v{font-size:26px}
  .stat-k{font-size:12px}
  .pain-q{font-size:16px;padding:20px 4px}
  .pain-a-inner{padding-left:16px;padding-right:4px}
  .sol-card,.sol-wide-body{padding:24px}
  .stats-band{padding:56px 0}
  .band-grid{grid-template-columns:1fr;margin-top:36px}
  .band-cell{padding:24px 20px}
  .news-head{flex-direction:column;align-items:flex-start}
  .faq-q{font-size:16px;padding:18px}
  .cta-band{padding:28px 22px}
  .footer-cols{grid-template-columns:1fr;gap:30px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .modal-panel{
    left:0;right:0;bottom:0;top:auto;width:100%;max-width:100%;transform:translateY(14px);
    border-radius:16px 16px 0 0;max-height:88vh;padding:28px 20px calc(24px + env(safe-area-inset-bottom))
  }
  .modal.open .modal-panel{transform:translateY(0)}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --brand:#0F1B16;
  --brand-soft:#1B2A23;
  --accent:#C6F24E;
  --accent-hover:#D3F96A;
  --accent-2:#FF5B2E;
  --bg:#F6F5F1;
  --surface:#FFFFFF;
  --surface-2:#FBFBF8;
  --line:#DCDAD3;
  --ink:#0F1B16;
  --ink-2:#4C534F;
  --ink-inv:#F2F1EC;
  --ink-inv-2:#A9B3AC;
  --radius:4px;
  --radius-lg:6px;
  --shadow-s:0 1px 2px rgba(15,27,22,.04);
  --shadow-m:0 10px 28px rgba(15,27,22,.10);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"Inter","Archivo","Helvetica Neue",Arial,ui-monospace,monospace;
  --nav-w:248px;
  --nav-w-sm:72px;
  --gap-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;font-family:var(--font-cn);color:var(--ink);letter-spacing:-.01em;}
p{margin:0 0 1.1em;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease;}
a:hover{color:#2C3B33;}
img{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{max-width:1200px;margin:0 auto;padding:0 40px;width:100%;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:12.5px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-2);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:inline-block;}
.section-title{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;position:relative;padding-top:18px;}
.section-title::before{content:"";position:absolute;top:0;left:0;width:40px;height:3px;background:var(--accent);border-radius:2px;}
.section-sub{color:var(--ink-2);font-size:16px;margin-top:12px;max-width:720px;}

/* ===== 左侧 App Shell 导航 ===== */
.side-shell{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);
  background:var(--brand);
  display:flex;flex-direction:column;
  padding:26px 18px 24px;
  z-index:60;
  overflow-y:auto;overflow-x:visible;
}
.shell-logo{display:flex;align-items:center;gap:10px;color:var(--ink-inv);margin-bottom:34px;}
.shell-logo:hover{color:var(--accent);}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:var(--radius);
  background:var(--accent);color:var(--brand);
  display:grid;place-items:center;
  font-family:var(--font-num);font-weight:800;font-size:13.5px;letter-spacing:.04em;
}
.logo-text{font-size:16.5px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.side-nav a{
  position:relative;
  display:flex;align-items:center;gap:12px;
  min-height:46px;padding:0 12px 0 14px;
  border-radius:var(--radius);
  color:var(--ink-inv-2);
  font-size:14.5px;font-weight:600;
  transition:background-color .12s ease,color .12s ease;
}
.side-nav a i{width:18px;text-align:center;font-size:15px;flex:0 0 18px;}
.side-nav a:hover{background:rgba(242,241,236,.08);color:var(--ink-inv);}
.side-nav a.active{background:rgba(198,242,78,.10);color:#fff;}
.side-nav a.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  background:var(--accent);border-radius:0 2px 2px 0;
}
.nav-cta{
  margin-top:28px;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent);color:var(--brand);
  padding:13px 18px;border-radius:var(--radius);
  font-size:14.5px;font-weight:800;
  transition:background-color .2s ease,transform .2s ease;
}
.nav-cta:hover{background:var(--accent-hover);color:var(--brand);transform:translateY(-1px);}
.nav-cta i{transition:transform .2s ease;}
.nav-cta:hover i{transform:translateX(4px);}
.side-note{
  margin-top:auto;padding-top:24px;
  color:var(--ink-inv-2);font-size:12.5px;line-height:1.7;
  border-top:1px solid rgba(242,241,236,.12);
}

/* ===== 移动端顶栏 ===== */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;
  background:var(--brand);align-items:center;justify-content:space-between;
  padding:0 16px;z-index:70;
}
.mobile-bar .shell-logo{margin:0;}
.nav-toggle{
  width:44px;height:44px;border:1px solid rgba(242,241,236,.25);border-radius:var(--radius);
  background:transparent;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-inv);}
.nav-scrim{position:fixed;inset:0;background:rgba(15,27,22,.55);z-index:55;}
body.nav-open{overflow:hidden;}
.to-top{
  position:fixed;right:24px;bottom:calc(24px + env(safe-area-inset-bottom,0px));
  width:46px;height:46px;border-radius:var(--radius);
  background:var(--accent);color:var(--brand);border:0;
  display:grid;place-items:center;font-size:16px;
  box-shadow:0 8px 22px rgba(15,27,22,.22);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
  z-index:65;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--accent-hover);}

/* ===== 主内容区 ===== */
.main-area{margin-left:var(--nav-w);min-height:100vh;background:var(--bg);}

/* ===== 面包屑 ===== */
.band-crumb{background:var(--surface);border-bottom:1px solid var(--line);padding:18px 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{
  color:var(--brand);font-weight:600;max-width:46ch;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.crumb-cat{color:var(--ink-2);}

/* ===== 文章卡 ===== */
.article-section{padding:56px 0 0;}
.article-card{
  max-width:760px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-s);
  padding:48px 52px 44px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:18px;}
.badge{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:700;letter-spacing:.02em;
  padding:4px 10px;border-radius:2px;border:1px solid var(--line);
  color:var(--ink-2);background:var(--surface);
}
.badge-cat{background:rgba(198,242,78,.28);border-color:rgba(198,242,78,.9);color:#22301F;}
.meta-time{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:13px;font-weight:500;color:var(--ink-2);
}
.meta-time::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--accent-2);display:inline-block;
}
.article-title{
  font-size:clamp(26px,3vw,40px);
  font-weight:800;line-height:1.22;letter-spacing:-.02em;
  margin-bottom:18px;
}
.article-lead{
  color:var(--ink-2);font-size:16.5px;line-height:1.85;
  padding-left:16px;border-left:3px solid var(--accent);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:28px;
}
.article-divider{height:1px;background:var(--line);margin:0 0 30px;}

/* ===== 正文排版 ===== */
.article-body{font-size:17px;line-height:1.9;color:#16241D;word-break:break-word;overflow-wrap:anywhere;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:clamp(20px,2.1vw,26px);font-weight:700;line-height:1.35;
  position:relative;padding-top:18px;margin:2.1em 0 .85em;
}
.article-body h2::before{content:"";position:absolute;top:0;left:0;width:40px;height:3px;background:var(--accent);border-radius:2px;}
.article-body h3{font-size:19px;font-weight:700;line-height:1.45;margin:1.8em 0 .6em;}
.article-body h4{font-size:17px;font-weight:700;margin:1.5em 0 .5em;color:var(--brand-soft);}
.article-body a{color:var(--brand);font-weight:600;text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{background:rgba(198,242,78,.45);}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.4em;}
.article-body ul li{list-style:disc;margin-bottom:.5em;}
.article-body ol li{list-style:decimal;margin-bottom:.5em;}
.article-body img{border-radius:var(--radius);margin:1.6em 0 .6em;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:8px;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;background:var(--surface-2);
  border-left:3px solid var(--accent);color:var(--ink-2);font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15.5px;
  border:1px solid var(--line);
}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top;}
.article-body th{background:#F0EFEA;font-weight:700;color:var(--brand);}
.article-body tr:nth-child(even) td{background:#FCFCFA;}
.article-body code{
  font-family:var(--font-num);font-size:14.5px;background:#F0EFEA;
  padding:2px 6px;border-radius:3px;word-break:break-all;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

/* 空态 */
.article-empty{padding:8px 0 4px;text-align:left;}
.article-empty h2{font-size:24px;font-weight:700;margin-bottom:12px;}
.article-empty p{color:var(--ink-2);margin-bottom:22px;}

/* ===== 文末操作 ===== */
.article-foot{
  max-width:760px;margin-top:22px;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  padding:20px 24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
}
.foot-links{display:flex;flex-wrap:wrap;gap:20px;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:700;color:var(--brand);
  border-bottom:1px solid rgba(15,27,22,.28);padding-bottom:2px;
}
.text-link:hover{color:var(--brand);border-bottom-color:var(--accent);background:transparent;}
.text-link i{transition:transform .2s ease;}
.text-link:hover i{transform:translateX(4px);}
.foot-stamp{font-family:var(--font-num);font-size:12.5px;color:var(--ink-2);}

/* ===== 服务入口 ===== */
.section{padding:var(--gap-section) 0 0;}
.entry-grid{margin-top:36px;}
.entry-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-s);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);border-color:#C9C6BE;}
.entry-thumb{
  position:relative;aspect-ratio:16/9;background:var(--brand);overflow:hidden;
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;}
.entry-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,27,22,0) 45%,rgba(15,27,22,.42) 100%);
}
.entry-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.entry-index{
  font-family:var(--font-num);font-size:13px;font-weight:800;letter-spacing:.12em;
  color:var(--ink-2);margin-bottom:10px;
}
.entry-body h3{font-size:19px;font-weight:700;line-height:1.4;margin-bottom:10px;}
.entry-body p{color:var(--ink-2);font-size:15px;line-height:1.8;margin-bottom:16px;}
.entry-body .text-link{margin-top:auto;align-self:flex-start;}

/* ===== FAQ ===== */
.faq-wrap{margin-top:34px;max-width:900px;}
.faq-wrap .accordion{background:transparent;border:0;margin:0;}
.faq-wrap .accordion-item{border:0;margin-bottom:12px;background:transparent;}
.faq-wrap .accordion-title{
  display:block;position:relative;
  background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);
  color:var(--brand);font-size:17px;font-weight:700;line-height:1.5;
  padding:18px 58px 18px 22px;
  transition:background-color .18s ease,border-color .18s ease;
}
.faq-wrap .accordion-title:hover{background:var(--surface-2);color:var(--brand);}
.faq-wrap .accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  left:auto;font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--brand);
  transition:transform .25s ease;width:auto;height:auto;
}
.faq-wrap .accordion-item.is-active .accordion-title::before{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-wrap .accordion-item.is-active .accordion-title{
  border-color:var(--line);background:var(--surface-2);border-bottom-left-radius:0;border-bottom-right-radius:0;
}
.faq-wrap .accordion-content{
  background:var(--surface-2);
  border:1px solid var(--line);border-top:0;
  border-bottom-left-radius:var(--radius);border-bottom-right-radius:var(--radius);
  padding:4px 22px 18px;color:var(--ink-2);font-size:15.5px;line-height:1.85;
}
.faq-wrap .accordion-content p{margin-bottom:0;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 26px;border-radius:var(--radius);
  font-size:15px;font-weight:700;line-height:1;border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn i{transition:transform .2s ease;}
.btn-primary{background:var(--accent);color:var(--brand);border-color:var(--accent);}
.btn-primary:hover{background:var(--accent-hover);color:var(--brand);transform:translateY(-1px);}
.btn-primary:hover i{transform:translateX(4px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand);color:var(--ink-inv);}
.btn-ghost:hover i{transform:translateX(4px);}
.btn-on-dark{background:transparent;color:var(--ink-inv);border-color:rgba(242,241,236,.4);}
.btn-on-dark:hover{background:var(--accent);color:var(--brand);border-color:var(--accent);}
.btn-on-dark:hover i{transform:translateX(4px);}

/* ===== CTA 条 ===== */
.cta-band{
  margin-top:var(--gap-section);
  background:var(--brand);color:var(--ink-inv);
  padding:64px 0;
}
.cta-inner{display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;}
.cta-inner h2{color:var(--ink-inv);font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;margin-bottom:10px;}
.cta-inner p{color:var(--ink-inv-2);font-size:15.5px;margin:0;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand);color:var(--ink-inv);padding:64px 0 0;margin-top:0;border-top:1px solid rgba(242,241,236,.10);}
.footer-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .shell-logo{margin-bottom:14px;}
.footer-brand p{color:var(--ink-inv-2);font-size:14.5px;line-height:1.8;max-width:280px;margin:0;}
.footer-col h3{font-size:14px;font-weight:700;color:var(--ink-inv);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--ink-inv-2);line-height:1.7;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  border-top:1px solid rgba(242,241,236,.14);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--ink-inv-2);
  font-family:var(--font-num);
}

/* ===== 入场动效 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s cubic-bezier(.22,.61,.36,1),transform .24s cubic-bezier(.22,.61,.36,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  :root{--gap-section:72px;}
  .container{padding:0 24px;}
  .main-area{margin-left:var(--nav-w-sm);}
  .side-shell{width:var(--nav-w-sm);padding:22px 10px;align-items:center;}
  .side-shell .shell-logo{justify-content:center;margin-bottom:28px;}
  .side-shell .logo-text{display:none;}
  .side-nav{width:100%;}
  .side-nav a{justify-content:center;padding:0 0 0 2px;min-height:48px;}
  .side-nav a .nav-text{
    position:absolute;left:calc(100% + 14px);top:50%;
    transform:translateY(-50%) translateX(-6px);
    background:var(--brand);color:var(--ink-inv);
    padding:8px 12px;border-radius:var(--radius);white-space:nowrap;
    font-size:13px;font-weight:600;
    box-shadow:0 10px 24px rgba(15,27,22,.28);
    opacity:0;pointer-events:none;transition:opacity .16s ease,transform .16s ease;
  }
  .side-nav a:hover .nav-text,
  .side-nav a:focus-visible .nav-text{opacity:1;transform:translateY(-50%) translateX(0);}
  .side-nav a.active::before{top:12px;bottom:12px;}
  .nav-cta{padding:13px 12px;width:52px;height:52px;overflow:hidden;justify-content:center;font-size:0;}
  .nav-cta i{font-size:16px;}
  .side-note{display:none;}
  .article-card{padding:40px 36px 38px;}
  .footer-cols{grid-template-columns:1.3fr 1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:767px){
  :root{--gap-section:56px;}
  body{font-size:16px;}
  .container{padding:0 16px;}
  .mobile-bar{display:flex;}
  .main-area{margin-left:0;padding-top:64px;}
  .side-shell{
    width:280px;padding:22px 16px;transform:translateX(-100%);
    transition:transform .24s cubic-bezier(.22,.61,.36,1);
    align-items:stretch;
    box-shadow:0 0 40px rgba(15,27,22,.35);
  }
  .side-shell.is-open{transform:translateX(0);}
  .side-shell .shell-logo{justify-content:flex-start;margin-bottom:26px;}
  .side-shell .logo-text{display:inline;}
  .side-nav a{justify-content:flex-start;padding:0 12px 0 14px;}
  .side-nav a .nav-text{position:static;opacity:1;transform:none;background:transparent;box-shadow:none;padding:0;color:inherit;font-size:14.5px;}
  .nav-cta{width:auto;height:auto;padding:13px 18px;font-size:14.5px;gap:8px;}
  .nav-cta i{font-size:14px;}
  .side-note{display:block;}
  .article-section{padding:32px 0 0;}
  .article-card{padding:28px 20px 30px;border-left:0;border-right:0;border-radius:0;max-width:100%;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body table{font-size:14px;}
  .article-body th,.article-body td{padding:9px 10px;}
  .article-foot{flex-direction:column;align-items:flex-start;padding:18px 20px;}
  .article-title{font-size:clamp(23px,6vw,30px);}
  .breadcrumb .current{max-width:24ch;}
  .cta-band{padding:48px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;justify-content:center;}
  .footer-cols{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .to-top{right:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));}
}
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --brand:#0F1B16;
  --brand-soft:#16241D;
  --accent:#C6F24E;
  --accent-2:#FF5B2E;
  --bg:#F6F5F1;
  --surface:#FFFFFF;
  --line:#DCDAD3;
  --ink:#0F1B16;
  --ink-2:#4C534F;
  --ink-inv:#F2F1EC;
  --ink-inv-2:#A9B3AC;
  --radius:4px;
  --radius-lg:6px;
  --shadow-sm:0 1px 2px rgba(15,27,22,.04);
  --shadow-md:0 10px 28px rgba(15,27,22,.10);
  --shell:248px;
  --shell-mini:72px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","Archivo","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius);}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),background-color .12s var(--ease);}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:16px;}
::selection{background:var(--accent);color:var(--brand);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}
h1{font-size:clamp(30px,4.2vw,54px);font-weight:800;letter-spacing:-.02em;line-height:1.18;}
h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;position:relative;padding-bottom:18px;}
h2::after{content:"";position:absolute;left:0;bottom:0;width:40px;height:4px;background:var(--accent);border-radius:2px;}
h3{font-size:20px;font-weight:700;line-height:1.45;}
p{color:var(--ink-2);}
.container{max-width:1200px;margin:0 auto;padding:0 40px;width:100%;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head p{margin-top:14px;font-size:17px;}
.eyebrow{font-family:var(--font-num);font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin-bottom:14px;display:block;}

/* ============ 侧栏 App Shell ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--shell);
  background:var(--brand);color:var(--ink-inv);
  display:flex;flex-direction:column;gap:26px;
  padding:28px 20px;z-index:60;
  border-right:1px solid rgba(255,255,255,.06);
}
.shell-logo{display:flex;align-items:center;gap:12px;padding:0 6px;}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;display:grid;place-items:center;
  background:var(--accent);color:var(--brand);border-radius:var(--radius);
  font-family:var(--font-num);font-weight:800;font-size:15px;letter-spacing:.02em;
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--ink-inv);white-space:nowrap;}
.side-nav{display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto;}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:12px 14px;border-radius:var(--radius);
  color:var(--ink-inv-2);font-size:15px;font-weight:500;
  border-left:3px solid transparent;min-height:44px;
}
.side-nav a i{width:20px;text-align:center;font-size:15px;flex:0 0 20px;}
.side-nav a:hover{color:var(--ink-inv);background:rgba(255,255,255,.06);}
.side-nav a.active{
  color:#fff;background:rgba(255,255,255,.07);
  border-left-color:var(--accent);font-weight:700;
}
.nav-text{white-space:nowrap;}
.side-cta{margin-top:auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius);border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1;letter-spacing:.01em;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),filter .2s var(--ease);
  min-height:44px;
}
.btn i{transition:transform .2s var(--ease);}
.btn:hover i{transform:translateX(4px);}
.btn-primary{background:var(--accent);color:var(--brand);}
.btn-primary:hover{filter:brightness(1.06);color:var(--brand);}
.btn-primary:active{filter:brightness(.96);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand);color:var(--ink-inv);}
.btn-ghost-inv{background:transparent;color:var(--ink-inv);border-color:rgba(242,241,236,.45);}
.btn-ghost-inv:hover{background:var(--ink-inv);color:var(--brand);}
.btn-block{width:100%;}
.link-arrow{font-size:15px;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:6px;border-bottom:2px solid var(--accent);padding-bottom:2px;}
.link-arrow i{transition:transform .2s var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}

.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  background:var(--brand);color:var(--ink-inv);align-items:center;justify-content:space-between;
  padding:0 16px;border-bottom:1px solid rgba(255,255,255,.08);
}
.hamburger{
  width:44px;height:44px;display:grid;place-items:center;
  background:transparent;border:1px solid rgba(255,255,255,.24);border-radius:var(--radius);
  color:var(--ink-inv);font-size:17px;
}
.nav-overlay{display:none;position:fixed;inset:0;background:rgba(15,27,22,.55);z-index:55;}

/* ============ 主区域 ============ */
.main{margin-left:var(--shell);min-height:100vh;display:flex;flex-direction:column;}
.main-inner{flex:1 1 auto;}

/* ============ 顶部横幅 ============ */
.page-banner{
  position:relative;
  background-image:linear-gradient(rgba(15,27,22,.74),rgba(15,27,22,.80)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  color:var(--ink-inv);
  padding:96px 0 84px;
}
.page-banner h1{color:var(--ink-inv);max-width:820px;}
.page-banner .lead{margin-top:20px;font-size:18px;line-height:1.8;color:rgba(242,241,236,.82);max-width:660px;}
.crumbs{font-size:13px;font-weight:500;color:var(--ink-inv-2);margin-bottom:26px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumbs a{color:var(--ink-inv-2);}
.crumbs a:hover{color:var(--accent);}
.crumbs span.sep{color:rgba(169,179,172,.6);}
.crumbs .current{color:var(--ink-inv);}
.banner-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  margin-top:56px;background:rgba(242,241,236,.18);border:1px solid rgba(242,241,236,.18);
  border-radius:var(--radius);overflow:hidden;
}
.banner-stats div{background:rgba(15,27,22,.35);padding:20px 18px;}
.banner-stats .num{font-family:var(--font-num);font-size:28px;font-weight:800;color:var(--accent);letter-spacing:-.02em;}
.banner-stats .lbl{font-size:13px;color:var(--ink-inv-2);margin-top:4px;}

/* ============ 亮点条 ============ */
.highlight-strip{border-bottom:1px solid var(--line);background:var(--surface);}
.highlight-strip .strip-inner{display:flex;flex-wrap:wrap;gap:14px;padding:22px 0;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--line);border-radius:2px;padding:8px 14px;
  font-size:13px;font-weight:600;color:var(--ink-2);background:var(--surface);
}
.chip i{color:var(--brand);font-size:12px;}
.chip.accent{background:rgba(198,242,78,.35);border-color:rgba(15,27,22,.12);color:var(--brand);}

/* ============ 图文交替流 ============ */
.alt-list{display:flex;flex-direction:column;gap:88px;}
.alt-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.alt-row .alt-media{position:relative;}
.alt-row .alt-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line);box-shadow:var(--shadow-sm);}
.alt-row.reverse .alt-media{order:2;}
.alt-row.reverse .alt-body{order:1;}
.alt-index{
  font-family:var(--font-num);font-size:15px;font-weight:800;letter-spacing:.16em;
  color:var(--brand);background:var(--accent);display:inline-block;padding:5px 10px;border-radius:2px;
  margin-bottom:16px;
}
.alt-body h2{font-size:clamp(22px,2.1vw,28px);padding-bottom:14px;}
.alt-body p{margin-top:18px;font-size:16.5px;}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:10px;}
.point-list li{display:flex;gap:10px;font-size:15.5px;color:var(--ink-2);line-height:1.7;}
.point-list li::before{content:"";flex:0 0 8px;height:8px;margin-top:10px;background:var(--accent);border-radius:2px;}
.alt-body .link-arrow{margin-top:24px;}

/* ============ 场景 ============ */
.scene-band{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.scene-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.scene-card .ico{
  width:42px;height:42px;display:grid;place-items:center;border-radius:var(--radius);
  background:var(--brand);color:var(--accent);font-size:17px;margin-bottom:18px;
}
.scene-card h3{font-size:19px;margin-bottom:10px;}
.scene-card p{font-size:15.5px;}

/* ============ 数据深色区 ============ */
.dark-band{background:var(--brand);color:var(--ink-inv);}
.dark-band h2{color:var(--ink-inv);}
.dark-band p{color:var(--ink-inv-2);}
.data-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:44px;}
.data-item{border-left:3px solid var(--accent);padding-left:18px;}
.data-item .num{font-family:var(--font-num);font-size:clamp(30px,3vw,42px);font-weight:800;color:var(--accent);letter-spacing:-.02em;font-variant-numeric:tabular-nums;}
.data-item .unit{font-size:16px;font-weight:700;color:var(--accent);margin-left:2px;}
.data-item .cap{font-size:14px;color:var(--ink-inv-2);margin-top:6px;}
.data-note{margin-top:34px;font-size:13.5px;color:var(--ink-inv-2);}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:transparent;border:0;padding:22px 44px 22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:17px;font-weight:700;color:var(--ink);text-align:left;position:relative;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:22px;height:22px;display:grid;place-items:center;
  font-family:var(--font-num);font-size:18px;font-weight:700;color:var(--brand);
  transition:transform .24s var(--ease);
}
.faq-item.open .faq-icon{transform:translateY(-50%) rotate(180deg);}
.faq-a{display:none;background:rgba(246,245,241,.9);border-top:1px solid var(--line);padding:20px 44px 24px 0;}
.faq-item.open .faq-a{display:block;}
.faq-a p{font-size:15.5px;color:var(--ink-2);}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-soft);color:var(--ink-inv);border-radius:var(--radius-lg);
  padding:56px 48px;display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;
}
.cta-band h2{color:var(--ink-inv);max-width:520px;}
.cta-band h2::after{background:var(--accent);}
.cta-band p{color:var(--ink-inv-2);margin-top:16px;max-width:520px;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 弹层 ============ */
.modal-mask{
  position:fixed;inset:0;background:rgba(15,27,22,.55);z-index:90;
  display:none;align-items:center;justify-content:center;padding:24px;
}
.modal-mask.open{display:flex;}
.modal-panel{
  background:var(--surface);border-radius:var(--radius-lg);max-width:520px;width:100%;
  padding:34px 32px 26px;position:relative;box-shadow:0 24px 60px rgba(15,27,22,.28);
  max-height:90vh;overflow-y:auto;
}
.modal-panel h3{font-size:22px;margin-bottom:8px;}
.modal-panel .modal-sub{font-size:14.5px;color:var(--ink-2);margin-bottom:24px;}
.modal-close{
  position:absolute;top:8px;right:8px;width:44px;height:44px;
  background:transparent;border:0;color:var(--ink-2);font-size:18px;
  display:grid;place-items:center;border-radius:var(--radius);
}
.modal-close:hover{background:var(--bg);color:var(--brand);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:8px;color:var(--ink);}
.field .req{color:var(--accent-2);margin-left:2px;}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius);
  padding:0 14px;height:48px;background:var(--surface);color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:rgba(76,83,79,.6);}
.field input:focus,.field textarea:focus{border-color:var(--brand);outline:2px solid var(--accent);outline-offset:2px;}
.field.error input,.field.error textarea{border-color:var(--accent-2);}
.field .err-msg{display:none;font-size:13px;color:var(--accent-2);margin-top:6px;}
.field.error .err-msg{display:block;}
.form-privacy{font-size:13px;color:var(--ink-2);margin-top:14px;line-height:1.7;}
.form-privacy a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.form-ok{display:none;background:rgba(198,242,78,.28);border:1px solid rgba(15,27,22,.12);border-radius:var(--radius);padding:14px 16px;font-size:14.5px;color:var(--brand);margin-bottom:18px;}
.form-ok.show{display:block;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand);color:var(--ink-inv);padding:64px 0 28px;margin-top:auto;}
.footer-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand p{color:var(--ink-inv-2);font-size:14.5px;margin-top:18px;max-width:260px;}
.footer-col h3{font-size:14px;font-weight:700;color:var(--ink-inv);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--ink-inv-2);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(242,241,236,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-inv-2);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.in{opacity:1;transform:none;transition:opacity .24s var(--ease),transform .24s var(--ease);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .sidebar{width:var(--shell-mini);padding:24px 10px;align-items:center;}
  .sidebar .logo-text{display:none;}
  .side-nav a{justify-content:center;padding:12px 8px;}
  .side-nav a .nav-text{
    position:absolute;left:calc(var(--shell-mini) - 8px);top:50%;transform:translateY(-50%);
    background:var(--brand-soft);color:var(--ink-inv);padding:8px 12px;border-radius:var(--radius);
    font-size:13.5px;white-space:nowrap;opacity:0;pointer-events:none;
    transition:opacity .16s var(--ease);box-shadow:var(--shadow-md);z-index:80;
  }
  .side-nav a:hover .nav-text{opacity:1;}
  .side-cta{width:44px;height:44px;padding:0;font-size:0;}
  .side-cta i{font-size:15px;}
  .main{margin-left:var(--shell-mini);}
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .banner-stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .data-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px;}
  .alt-row{gap:36px;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .topbar{display:flex;}
  .sidebar{
    width:264px;padding:26px 18px;align-items:stretch;
    transform:translateX(-100%);transition:transform .28s var(--ease);
  }
  .sidebar.open{transform:translateX(0);}
  .sidebar .logo-text{display:inline;}
  .side-nav a{justify-content:flex-start;padding:12px 14px;}
  .side-nav a .nav-text{position:static;opacity:1;transform:none;background:transparent;box-shadow:none;padding:0;font-size:15px;}
  .side-cta{width:100%;height:auto;padding:14px 26px;font-size:15px;}
  .side-cta i{font-size:15px;}
  .nav-overlay.open{display:block;}
  .main{margin-left:0;padding-top:64px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .page-banner{padding:64px 0 56px;}
  .banner-stats{grid-template-columns:1fr 1fr;margin-top:36px;}
  .banner-stats .num{font-size:22px;}
  .highlight-strip .strip-inner{padding:18px 0;gap:10px;}
  .alt-list{gap:56px;}
  .alt-row{grid-template-columns:1fr;gap:24px;}
  .alt-row.reverse .alt-media{order:0;}
  .alt-row.reverse .alt-body{order:1;}
  .scene-grid{grid-template-columns:1fr;}
  .data-grid{grid-template-columns:1fr;gap:24px;}
  .cta-band{padding:36px 22px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-cols{grid-template-columns:1fr;gap:28px;}
  .modal-mask{padding:0;align-items:flex-end;}
  .modal-panel{max-width:100%;border-radius:var(--radius-lg) var(--radius-lg) 0 0;padding:28px 20px 22px;}
  .faq-q{font-size:16px;padding-right:38px;}
  .faq-a{padding-right:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --brand:#0F1B16;
  --accent:#C6F24E;
  --accent-2:#FF5B2E;
  --bg:#F6F5F1;
  --surface:#FFFFFF;
  --line:#DCDAD3;
  --ink:#0F1B16;
  --ink-2:#4C534F;
  --ink-inv:#F2F1EC;
  --ink-inv-2:#A9B3AC;
  --radius:4px;
  --shadow-1:0 1px 2px rgba(15,27,22,.04);
  --shadow-2:0 10px 28px rgba(15,27,22,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sidebar:248px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"Inter","Archivo","Helvetica Neue",Arial,sans-serif;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-weight:400;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p,figure{margin:0;}
input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

/* Foundation 默认外观覆盖 */
body,.grid-container,.button,input,select,textarea{font-family:var(--font-cn);}
.grid-container{max-width:1240px;margin:0 auto;padding-left:40px;padding-right:40px;}
.grid-container.full{padding-left:0;padding-right:0;}
a{color:inherit;}
a:hover{color:inherit;}
.button{background:none;border-radius:var(--radius);}
.row{margin:0;}
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:var(--brand);padding:10px 18px;z-index:200;border-radius:0 0 var(--radius) 0;}
.skip:focus{left:0;}

/* ============ 布局骨架 ============ */
.app-shell{min-height:100vh;}
.main-area{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;}
.main-inner{flex:1;}

/* ============ 左侧导航 ============ */
.side-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);
  background:var(--brand);color:var(--ink-inv);
  display:flex;flex-direction:column;gap:26px;
  padding:28px 18px 22px;z-index:80;
  border-right:1px solid rgba(242,241,236,.06);
}
.shell-logo{display:flex;align-items:center;gap:10px;padding:0 6px;color:var(--ink-inv);font-weight:800;}
.logo-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:6px;background:var(--accent);color:var(--brand);
  display:grid;place-items:center;font-family:var(--font-num);font-size:13px;font-weight:800;letter-spacing:.04em;
}
.logo-text{font-size:17px;letter-spacing:-.01em;white-space:nowrap;}
.side-nav{display:flex;flex-direction:column;gap:4px;flex:1;}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:46px;padding:10px 12px 10px 14px;border-radius:var(--radius);
  color:var(--ink-inv-2);font-size:15px;line-height:1.4;
  transition:background .12s ease,color .12s ease;
}
.side-nav a i{width:18px;flex:0 0 18px;text-align:center;font-size:15px;}
.side-nav a:hover{background:rgba(242,241,236,.08);color:var(--ink-inv);}
.side-nav a.active{color:#FFFFFF;background:rgba(198,242,78,.10);}
.side-nav a.active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  background:var(--accent);border-radius:2px;
}
.side-cta{border-top:1px solid rgba(242,241,236,.10);padding-top:18px;display:flex;flex-direction:column;gap:10px;}
.side-cta p{font-size:13px;line-height:1.7;color:var(--ink-inv-2);}
.side-cta .btn{width:100%;justify-content:center;padding:12px 16px;font-size:14px;}

/* 移动端顶栏 */
.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:62px;z-index:90;
  background:var(--brand);color:var(--ink-inv);align-items:center;justify-content:space-between;
  padding:0 16px;border-bottom:1px solid rgba(242,241,236,.08);
}
.mobile-topbar .shell-logo{padding:0;}
.burger{width:44px;height:44px;display:grid;place-items:center;gap:4px;align-content:center;}
.burger span{display:block;width:20px;height:2px;background:var(--ink-inv);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.nav-scrim{position:fixed;inset:0;background:rgba(15,27,22,.55);z-index:70;opacity:0;pointer-events:none;transition:opacity .2s ease;}
.nav-scrim.on{opacity:1;pointer-events:auto;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius);font-size:15px;font-weight:700;
  line-height:1.2;min-height:48px;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
  border:1px solid transparent;white-space:nowrap;
}
.btn i{transition:transform .2s var(--ease);font-size:13px;}
.btn:hover i{transform:translateX(4px);}
.btn-primary{background:var(--accent);color:var(--brand);}
.btn-primary:hover{background:#D3F86B;color:var(--brand);}
.btn-primary:active{background:#B9E445;}
.btn-ghost{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-ghost:hover{background:var(--brand);color:var(--ink-inv);}
.btn-ghost.on-dark{border-color:rgba(242,241,236,.5);color:var(--ink-inv);}
.btn-ghost.on-dark:hover{background:var(--ink-inv);color:var(--brand);border-color:var(--ink-inv);}
.btn-sm{padding:10px 18px;font-size:14px;min-height:42px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;
  border-bottom:1px solid var(--line);padding-bottom:2px;transition:color .2s ease,border-color .2s ease;
}
.link-arrow i{transition:transform .2s var(--ease);font-size:12px;}
.link-arrow:hover{color:var(--brand);border-color:var(--brand);}
.link-arrow:hover i{transform:translateX(4px);}
.link-arrow.on-dark{color:var(--ink-inv);border-color:rgba(242,241,236,.35);}
.link-arrow.on-dark:hover{color:var(--accent);border-color:var(--accent);}

/* ============ 面包屑 ============ */
.crumb{font-size:13px;color:var(--ink-2);display:flex;flex-wrap:wrap;gap:6px;align-items:center;padding:22px 0 0;}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{opacity:.6;}
.crumb .now{color:var(--brand);font-weight:600;}

/* ============ 板块标题 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head h2{
  font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.01em;position:relative;padding-top:16px;
}
.sec-head h2::before{content:"";position:absolute;top:0;left:0;width:40px;height:3px;background:var(--accent);border-radius:2px;}
.sec-head p{margin-top:14px;color:var(--ink-2);font-size:16px;line-height:1.8;max-width:660px;}
.eyebrow{
  display:inline-block;font-family:var(--font-num);font-size:12px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-2);margin-bottom:10px;
}

/* ============ Hero 横幅 ============ */
.page-hero{
  position:relative;overflow:hidden;color:var(--ink-inv);
  background:linear-gradient(rgba(15,27,22,.78),rgba(15,27,22,.78)),url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;right:-80px;top:-60px;width:320px;height:320px;
  border:1px solid rgba(198,242,78,.25);border-radius:50%;pointer-events:none;
}
.page-hero .inner{position:relative;z-index:2;padding:64px 0 56px;}
.page-hero h1{
  font-size:clamp(30px,4.2vw,54px);font-weight:800;line-height:1.18;letter-spacing:-.02em;color:#FFFFFF;
}
.page-hero .lead{margin-top:16px;font-size:17px;line-height:1.8;color:var(--ink-inv-2);max-width:620px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px;}
.hero-tags span{
  font-size:13px;font-weight:600;padding:6px 12px;border-radius:2px;
  border:1px solid rgba(242,241,236,.28);color:var(--ink-inv-2);
}

/* 数据带 */
.stat-band{
  margin-top:44px;display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid rgba(242,241,236,.18);padding-top:26px;
}
.stat-item{padding-right:20px;border-right:1px solid rgba(242,241,236,.12);}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-family:var(--font-num);font-size:clamp(26px,3vw,38px);font-weight:800;
  color:var(--accent);line-height:1.1;letter-spacing:-.02em;
}
.stat-label{font-size:13px;color:var(--ink-inv-2);margin-top:8px;line-height:1.6;}

/* ============ 筛选条 ============ */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);margin-bottom:32px;
}
.filter-label{font-size:13px;font-weight:700;color:var(--ink-2);margin-right:6px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;min-height:38px;padding:8px 16px;
  border:1px solid var(--line);border-radius:2px;font-size:14px;font-weight:600;
  color:var(--ink-2);background:var(--surface);transition:all .18s var(--ease);
}
.chip:hover{border-color:var(--brand);color:var(--brand);}
.chip.is-on{background:var(--accent);border-color:var(--accent);color:var(--brand);}
.chip.is-on:hover{background:#D3F86B;}

/* ============ 卡片 ============ */
.db-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.db-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#C9C6BE;}
.db-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand);}
.db-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.db-card:hover .db-thumb img{transform:scale(1.03);}
.db-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  font-size:12px;font-weight:700;padding:3px 9px;border-radius:2px;
  border:1px solid var(--line);color:var(--ink-2);background:#FAFAF8;
}
.badge.accent{background:rgba(198,242,78,.22);border-color:rgba(198,242,78,.6);color:var(--brand);}
.db-body h3{font-size:19px;font-weight:700;line-height:1.45;letter-spacing:-.01em;}
.db-body p{font-size:15px;line-height:1.8;color:var(--ink-2);}
.db-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-2);font-weight:500;
}
.db-meta .dot{display:inline-flex;align-items:center;gap:7px;}
.db-meta .dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-2);display:inline-block;}
.grid-margin-y{margin-top:-20px;}
.grid-margin-y>.cell{margin-top:20px;}

/* ============ 字段清单列表 ============ */
.field-list{border-top:1px solid var(--line);}
.field-row{
  display:flex;align-items:center;gap:20px;min-height:72px;padding:16px 0;
  border-bottom:1px solid var(--line);transition:background .18s ease,padding .18s ease;
}
.field-row:hover{background:rgba(198,242,78,.10);padding-left:12px;padding-right:12px;}
.field-idx{
  font-family:var(--font-num);font-size:14px;font-weight:800;color:var(--brand);
  background:var(--accent);border-radius:2px;width:34px;height:26px;display:grid;place-items:center;flex:0 0 34px;
}
.field-name{font-size:17px;font-weight:700;flex:1 1 220px;min-width:180px;transition:transform .18s var(--ease);}
.field-row:hover .field-name{transform:translateX(2px);}
.field-desc{font-size:14px;color:var(--ink-2);flex:2 1 320px;line-height:1.7;}
.field-tag{font-size:12px;font-weight:600;color:var(--ink-2);border:1px solid var(--line);border-radius:2px;padding:3px 8px;white-space:nowrap;}

/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.flow-step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.flow-step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.flow-num{
  font-family:var(--font-num);font-size:34px;font-weight:800;color:var(--brand);
  line-height:1;letter-spacing:-.03em;margin-bottom:14px;
}
.flow-step:hover .flow-num{color:#8FB92F;}
.flow-step h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.flow-step p{font-size:15px;color:var(--ink-2);line-height:1.8;}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:700;line-height:1.5;
  color:var(--brand);transition:color .2s ease;
}
.faq-q:hover{color:#3C4A42;}
.faq-icon{
  flex:0 0 30px;width:30px;height:30px;border:1px solid var(--line);border-radius:50%;
  display:grid;place-items:center;font-size:15px;color:var(--brand);
  transition:transform .24s var(--ease),background .2s ease,border-color .2s ease;
}
.faq-item.open .faq-icon{transform:rotate(180deg);background:var(--accent);border-color:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-item.open .faq-a{max-height:320px;}
.faq-a-inner{
  padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--ink-2);
  border-top:1px solid var(--line);padding-top:16px;background:linear-gradient(transparent,transparent);
}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;color:var(--ink-inv);
  background:linear-gradient(rgba(15,27,22,.88),rgba(15,27,22,.88)),url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  border-radius:var(--radius);
}
.cta-band .cta-inner{
  position:relative;z-index:2;padding:56px 48px;display:flex;flex-wrap:wrap;gap:32px;
  align-items:center;justify-content:space-between;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.3;letter-spacing:-.01em;color:#fff;}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-inv-2);max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 深色数据小结 ============ */
.dark-block{background:var(--brand);color:var(--ink-inv);}
.dark-block .dark-inner{padding:72px 0;}
.dark-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:36px;}
.dark-card{border-left:2px solid var(--accent);padding-left:20px;}
.dark-card .num{font-size:32px;font-weight:800;color:var(--accent);line-height:1.1;}
.dark-card h3{font-size:16px;font-weight:700;color:#fff;margin:12px 0 8px;}
.dark-card p{font-size:14px;color:var(--ink-inv-2);line-height:1.8;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand);color:var(--ink-inv-2);padding:64px 0 26px;margin-top:auto;}
.footer-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .shell-logo{padding:0;margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--ink-inv-2);max-width:250px;}
.footer-col h3{font-size:14px;font-weight:700;color:var(--ink-inv);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li a,.footer-col li span{font-size:14px;color:var(--ink-inv-2);transition:color .18s ease;}
.footer-col li a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:42px;padding-top:20px;border-top:1px solid rgba(242,241,236,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;line-height:1.7;color:var(--ink-inv-2);
}

/* ============ 弹层 ============ */
.modal-mask{
  position:fixed;inset:0;background:rgba(15,27,22,.55);z-index:150;
  display:none;align-items:center;justify-content:center;padding:24px;
}
.modal-mask.on{display:flex;}
.modal-panel{
  position:relative;background:var(--surface);border-radius:6px;width:100%;max-width:520px;
  padding:32px;box-shadow:0 24px 60px rgba(15,27,22,.28);max-height:88vh;overflow-y:auto;
}
.modal-close{
  position:absolute;top:10px;right:10px;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;font-size:18px;color:var(--ink-2);transition:background .18s ease,color .18s ease;
}
.modal-close:hover{background:#F1F0EB;color:var(--brand);}
.modal-panel h2{font-size:22px;font-weight:800;letter-spacing:-.01em;}
.modal-sub{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.75;}
.modal-form{margin-top:22px;display:flex;flex-direction:column;gap:16px;}
.form-field{display:flex;flex-direction:column;gap:8px;}
.form-field label{font-size:14px;font-weight:700;color:var(--brand);}
.form-field .req{color:var(--accent-2);margin-left:2px;}
.form-field input,.form-field select,.form-field textarea{
  height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius);
  background:#FCFCFA;font-size:15px;width:100%;transition:border-color .18s ease,box-shadow .18s ease;
}
.form-field textarea{height:auto;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-field input::placeholder,.form-field textarea::placeholder{color:rgba(76,83,79,.6);}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  border-color:var(--brand);outline:2px solid var(--accent);outline-offset:2px;
}
.form-privacy{font-size:13px;color:var(--ink-2);line-height:1.7;}
.form-privacy a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}

/* ============ 动效 ============ */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .24s var(--ease),transform .24s var(--ease);}
.js .reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sidebar:72px;}
  .grid-container{padding-left:24px;padding-right:24px;}
  .side-shell{padding:22px 12px;align-items:center;gap:20px;}
  .side-shell .logo-text{display:none;}
  .side-cta p{display:none;}
  .side-cta .btn{padding:12px 0;font-size:0;gap:0;}
  .side-cta .btn i{font-size:15px;}
  .side-nav{width:100%;}
  .side-nav a{justify-content:center;padding:12px 0;}
  .side-nav a .nav-text{
    position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:var(--brand);color:var(--ink-inv);padding:8px 14px;border-radius:var(--radius);
    white-space:nowrap;font-size:14px;opacity:0;pointer-events:none;
    transition:opacity .12s ease;box-shadow:var(--shadow-2);z-index:100;
  }
  .side-nav a:hover .nav-text{opacity:1;}
  .section{padding:72px 0;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .footer-cols{grid-template-columns:1fr 1fr;gap:30px;}
}

@media (max-width:767px){
  body{font-size:16px;}
  .mobile-topbar{display:flex;}
  .app-shell{padding-top:62px;}
  .main-area{margin-left:0;}
  .side-shell{
    width:min(84vw,300px);padding:26px 18px;transform:translateX(-102%);
    transition:transform .24s var(--ease);align-items:stretch;gap:24px;
  }
  .side-shell.open{transform:none;box-shadow:0 0 40px rgba(0,0,0,.4);}
  .side-shell .logo-text{display:inline;}
  .side-cta p{display:block;}
  .side-cta .btn{padding:13px 16px;font-size:14px;gap:8px;}
  .side-cta .btn i{font-size:13px;}
  .side-nav a{justify-content:flex-start;padding:12px 14px;}
  .side-nav a .nav-text{position:static;transform:none;opacity:1;background:none;padding:0;box-shadow:none;color:inherit;pointer-events:auto;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .page-hero .inner{padding:44px 0 40px;}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:22px 0;}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-top:1px solid rgba(242,241,236,.12);padding-top:20px;}
  .stat-item:nth-child(4){border-right:0;}
  .flow{grid-template-columns:1fr;}
  .dark-grid{grid-template-columns:1fr;gap:22px;}
  .cta-band .cta-inner{padding:38px 24px;}
  .modal-mask{align-items:flex-end;padding:0;}
  .modal-panel{max-width:100%;border-radius:6px 6px 0 0;padding:26px 20px 30px;max-height:92vh;}
  .field-row{flex-direction:column;align-items:flex-start;gap:8px;min-height:0;padding:18px 0;}
  .field-desc,.field-name{flex:0 0 auto;min-width:0;}
  .footer-cols{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:10px;}
  .btn{padding:13px 22px;}
}

@media (max-width:519px){
  .filter-bar{padding:16px;}
  .chip{padding:7px 12px;font-size:13px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;justify-content:center;}
}

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

/* roulang page: category3 */
:root{
    --brand:#0F1B16;
    --brand-soft:#18261F;
    --accent:#C6F24E;
    --accent-2:#FF5B2E;
    --bg:#F6F5F1;
    --surface:#FFFFFF;
    --line:#DCDAD3;
    --ink:#0F1B16;
    --ink-2:#4C534F;
    --ink-inv:#F2F1EC;
    --ink-inv-2:#A9B3AC;
    --radius:4px;
    --radius-lg:6px;
    --shadow-1:0 1px 2px rgba(15,27,22,.04);
    --shadow-2:0 10px 28px rgba(15,27,22,.10);
    --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    --font-num:"Inter","Archivo","SFMono-Regular",Menlo,Consolas,monospace;
    --shell-w:248px;
    --sec:96px;
  }

  *,*::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:17px;
    line-height:1.85;
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;height:auto;display:block;border-radius:var(--radius)}
  a{color:var(--ink);text-decoration:none;transition:color .18s ease}
  a:hover{color:var(--brand)}
  p{margin:0 0 1.1em}
  h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:-.01em}
  ul,ol{margin:0;padding:0;list-style:none}
  button{font-family:inherit}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
  .skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:var(--brand);padding:10px 18px;z-index:999;border-radius:0 0 var(--radius) 0}
  .skip-link:focus{left:0}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}

  /* ============ App Shell 侧边导航 ============ */
  .app-shell{
    position:fixed;top:0;left:0;width:var(--shell-w);height:100vh;
    background:var(--brand);
    display:flex;flex-direction:column;
    padding:28px 0 24px;
    z-index:120;
    overflow-y:auto;
    overflow-x:hidden;
  }
  .shell-logo{
    display:flex;align-items:center;gap:10px;
    padding:0 20px 26px;
    color:var(--ink-inv);
    font-weight:800;font-size:16px;letter-spacing:-.01em;
  }
  .shell-logo:hover{color:var(--accent)}
  .logo-mark{
    width:34px;height:34px;flex:0 0 34px;
    display:flex;align-items:center;justify-content:center;
    background:var(--accent);color:var(--brand);
    border-radius:var(--radius);
    font-family:var(--font-num);font-size:14px;font-weight:800;letter-spacing:.02em;
  }
  .logo-text{white-space:nowrap}

  .side-nav{display:flex;flex-direction:column;gap:4px;padding:0 12px}
  .side-nav a{
    position:relative;display:flex;align-items:center;gap:12px;
    min-height:44px;padding:10px 12px 10px 16px;
    border-radius:var(--radius);
    color:var(--ink-inv-2);
    font-size:14px;font-weight:500;line-height:1.4;
    transition:background .12s ease,color .12s ease;
  }
  .side-nav a i{width:18px;text-align:center;font-size:15px;flex:0 0 18px}
  .side-nav a:hover{background:rgba(255,255,255,.06);color:var(--ink-inv)}
  .side-nav a.active{background:rgba(198,242,78,.10);color:#fff;font-weight:700}
  .side-nav a.active::before{
    content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
    border-radius:2px;background:var(--accent);
  }
  .shell-cta{padding:26px 20px 0;margin-top:auto}
  .shell-meta{padding:18px 20px 0;font-size:12px;line-height:1.7;color:var(--ink-inv-2);border-top:1px solid rgba(242,241,236,.12);margin-top:20px}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:13px 26px;
    border-radius:var(--radius);
    border:1px solid transparent;
    font-size:15px;font-weight:700;line-height:1;letter-spacing:.01em;
    cursor:pointer;background:none;
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
  }
  .btn i{transition:transform .2s ease}
  .btn:hover i{transform:translateX(4px)}
  .btn-accent{background:var(--accent);color:var(--brand)}
  .btn-accent:hover{background:#d5fa6a;color:var(--brand)}
  .btn-accent:active{background:#b9e33f}
  .btn-ghost{border-color:rgba(242,241,236,.45);color:var(--ink-inv);background:transparent}
  .btn-ghost:hover{background:var(--ink-inv);color:var(--brand);border-color:var(--ink-inv)}
  .btn-dark{border-color:var(--brand);color:var(--brand);background:transparent}
  .btn-dark:hover{background:var(--brand);color:var(--ink-inv)}
  .btn-block{width:100%}

  /* ============ 移动端顶栏与抽屉 ============ */
  .mobile-bar{
    display:none;position:fixed;top:0;left:0;right:0;height:64px;
    background:var(--brand);z-index:150;
    align-items:center;justify-content:space-between;
    padding:0 16px;
  }
  .mobile-bar .shell-logo{padding:0;font-size:15px}
  .menu-toggle{
    width:44px;height:44px;display:flex;align-items:center;justify-content:center;
    background:transparent;border:1px solid rgba(242,241,236,.3);
    border-radius:var(--radius);color:var(--ink-inv);font-size:17px;cursor:pointer;
  }
  .menu-toggle:hover{background:rgba(255,255,255,.08)}
  .drawer-mask{
    display:none;position:fixed;inset:0;background:rgba(15,27,22,.55);
    z-index:180;opacity:0;transition:opacity .2s ease;
  }
  .drawer-mask.open{display:block;opacity:1}
  .mobile-drawer{
    position:fixed;top:0;left:0;bottom:0;width:280px;max-width:86vw;
    background:var(--brand);z-index:200;
    transform:translateX(-100%);transition:transform .24s cubic-bezier(.22,.61,.36,1);
    padding:24px 0;overflow-y:auto;
  }
  .mobile-drawer.open{transform:translateX(0)}
  .mobile-drawer .shell-logo{padding:0 20px 20px}

  /* ============ 主内容区 ============ */
  .main-content{margin-left:var(--shell-w);min-height:60vh}
  .site-footer{margin-left:var(--shell-w)}

  .section{padding:var(--sec) 0}
  .section--tight{padding:64px 0}
  .section-head{max-width:720px;margin-bottom:44px}
  .section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;position:relative;padding-bottom:16px}
  .section-head h2::after{content:"";position:absolute;left:0;bottom:0;width:40px;height:3px;background:var(--accent);border-radius:2px}
  .section-head p{margin:18px 0 0;color:var(--ink-2);font-size:16px}

  /* ============ 顶部横幅 ============ */
  .page-hero{
    position:relative;color:var(--ink-inv);
    padding:104px 0 88px;
    background-image:linear-gradient(102deg,rgba(15,27,22,.94) 0%,rgba(15,27,22,.82) 52%,rgba(15,27,22,.64) 100%),url(/assets/images/backpic/back-2.png);
    background-size:cover;background-position:center;
  }
  .breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:500;color:var(--ink-inv-2);margin-bottom:22px;flex-wrap:wrap}
  .breadcrumb a{color:var(--ink-inv-2)}
  .breadcrumb a:hover{color:var(--accent)}
  .breadcrumb .sep{opacity:.55}
  .breadcrumb .current{color:var(--ink-inv)}
  .page-hero h1{font-size:clamp(30px,4.2vw,54px);font-weight:800;letter-spacing:-.02em;line-height:1.18;color:#fff;max-width:15em}
  .hero-lead{margin:20px 0 0;font-size:17px;color:var(--ink-inv-2);max-width:640px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

  /* ============ 数据带 ============ */
  .stats-strip{margin-top:-46px;position:relative;z-index:5}
  .stats-grid{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-2);padding:8px 8px}
  .stat{padding:26px 20px;border-right:1px solid var(--line)}
  .stats-grid .cell:last-child .stat{border-right:0}
  .stat-num{display:inline-block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(28px,3vw,38px);font-weight:800;color:var(--ink);letter-spacing:-.02em;line-height:1.1}
  .stat-unit{font-family:var(--font-num);font-size:16px;font-weight:700;color:var(--accent-2);margin-left:2px}
  .stat-label{display:block;margin-top:8px;font-size:13px;font-weight:500;color:var(--ink-2);line-height:1.6}

  /* ============ 步骤时间轴 ============ */
  .timeline-wrap{display:grid;grid-template-columns:minmax(0,1fr);gap:0}
  .timeline{position:relative;max-width:920px}
  .step{position:relative;display:grid;grid-template-columns:88px minmax(0,1fr);gap:28px;padding-bottom:44px}
  .step:last-child{padding-bottom:0}
  .step::after{content:"";position:absolute;left:44px;top:72px;bottom:10px;width:1px;background:var(--line)}
  .step:last-child::after{display:none}
  .step-no{
    width:88px;height:64px;display:flex;align-items:center;justify-content:center;
    background:var(--accent);color:var(--brand);border-radius:var(--radius);
    font-family:var(--font-num);font-size:26px;font-weight:800;letter-spacing:.02em;
  }
  .step-body{padding-top:6px;max-width:680px}
  .step-body h3{font-size:20px;margin-bottom:8px}
  .step-body p{margin:0;color:var(--ink-2);font-size:16px}
  .step-tag{
    display:inline-block;margin-top:12px;padding:3px 10px;
    font-size:12px;font-weight:600;color:var(--ink);
    background:rgba(198,242,78,.28);border:1px solid rgba(15,27,22,.12);border-radius:2px;
  }

  /* ============ 图文分栏 ============ */
  .grid-x.gx-gap{margin-left:-12px;margin-right:-12px}
  .grid-x.gx-gap>.cell{padding-left:12px;padding-right:12px}
  .media-figure{margin:0}
  .media-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line);box-shadow:var(--shadow-1)}
  .media-caption{font-size:13px;color:var(--ink-2);margin-top:10px}
  .check-list{margin-top:6px}
  .check-list li{position:relative;padding-left:30px;margin-bottom:14px;font-size:16px;color:var(--ink-2);line-height:1.7}
  .check-list li i{
    position:absolute;left:0;top:7px;width:18px;height:18px;
    display:flex;align-items:center;justify-content:center;
    background:var(--accent);color:var(--brand);border-radius:2px;font-size:10px;
  }
  .check-list li strong{color:var(--ink)}

  /* ============ 列表行 ============ */
  .row-list{border-top:1px solid var(--line);margin-top:8px}
  .row-list li{
    display:grid;grid-template-columns:56px minmax(0,1fr) auto;gap:24px;align-items:center;
    padding:22px 4px;border-bottom:1px solid var(--line);
    transition:background .2s ease;
  }
  .row-list li:hover{background:rgba(15,27,22,.025)}
  .row-icon{
    width:56px;height:56px;display:flex;align-items:center;justify-content:center;
    background:rgba(198,242,78,.22);color:var(--brand);border-radius:var(--radius);font-size:18px;
  }
  .row-body h3{font-size:18px;margin-bottom:4px}
  .row-body p{margin:0;font-size:15px;color:var(--ink-2)}
  .row-meta{font-size:13px;font-weight:500;color:var(--ink-2);white-space:nowrap;font-family:var(--font-num)}
  .badge{
    display:inline-block;padding:3px 10px;font-size:12px;font-weight:600;
    border:1px solid var(--line);border-radius:2px;color:var(--ink-2);background:var(--surface);
  }
  .badge-accent{background:rgba(198,242,78,.28);border-color:rgba(15,27,22,.12);color:var(--ink)}

  /* ============ 深色数据板块 ============ */
  .dark-section{background:var(--brand);color:var(--ink-inv);padding:88px 0}
  .dark-section h2{color:#fff;font-size:clamp(24px,2.6vw,34px);position:relative;padding-bottom:16px;max-width:640px}
  .dark-section h2::after{content:"";position:absolute;left:0;bottom:0;width:40px;height:3px;background:var(--accent);border-radius:2px}
  .dark-section .lead{color:var(--ink-inv-2);margin-top:18px;max-width:620px;font-size:16px}
  .metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin-top:56px;border-top:1px solid rgba(242,241,236,.16)}
  .metric{padding:30px 24px 6px 0;border-right:1px solid rgba(242,241,236,.16);padding-left:24px}
  .metrics .metric:first-child{padding-left:0}
  .metrics .metric:last-child{border-right:0}
  .metric-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(30px,3.4vw,44px);font-weight:800;color:var(--accent);line-height:1.1;letter-spacing:-.02em}
  .metric-unit{font-family:var(--font-num);font-size:16px;font-weight:700;color:var(--ink-inv);margin-left:3px}
  .metric-label{display:block;margin-top:10px;font-size:14px;color:var(--ink-inv-2);line-height:1.7}
  .metric-note{margin-top:28px;font-size:13px;color:var(--ink-inv-2)}

  /* ============ CTA ============ */
  .cta-panel{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:48px;display:grid;grid-template-columns:1.25fr .75fr;gap:44px;align-items:center;
    box-shadow:var(--shadow-1);
  }
  .cta-panel h2{font-size:clamp(22px,2.2vw,30px);line-height:1.32}
  .cta-panel p{margin:16px 0 0;color:var(--ink-2);font-size:16px}
  .cta-actions{display:flex;flex-direction:column;gap:14px}
  .cta-note{font-size:13px;color:var(--ink-2);line-height:1.7;margin:0}
  .req-star{color:var(--accent-2);font-weight:700}

  /* ============ 弹层 ============ */
  .reveal{
    border-radius:var(--radius-lg);border:0;box-shadow:0 24px 60px rgba(15,27,22,.28);
    padding:36px;max-width:520px;
  }
  .reveal h2{font-size:22px;margin-bottom:8px}
  .reveal .modal-desc{font-size:14px;color:var(--ink-2);margin:0 0 22px}
  .modal-close{
    position:absolute;top:8px;right:8px;width:44px;height:44px;
    display:flex;align-items:center;justify-content:center;
    background:transparent;border:0;color:var(--ink-2);font-size:17px;cursor:pointer;border-radius:var(--radius);
  }
  .modal-close:hover{background:rgba(15,27,22,.06);color:var(--ink)}
  .field{margin-bottom:18px}
  .field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
  .field input,.field select{
    width:100%;height:48px;padding:0 14px;
    font-family:inherit;font-size:15px;color:var(--ink);
    background:var(--surface);
    border:1px solid var(--line);border-radius:var(--radius);
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  .field input::placeholder{color:rgba(76,83,79,.6)}
  .field input:focus,.field select:focus{border-color:var(--brand);outline:2px solid var(--accent);outline-offset:1px}
  .field .error-text{display:none;margin-top:6px;font-size:13px;color:var(--accent-2)}
  .field.has-error input,.field.has-error select{border-color:var(--accent-2)}
  .field.has-error .error-text{display:block}
  .privacy-note{font-size:13px;color:var(--ink-2);margin:14px 0 0;line-height:1.7}
  .privacy-note a{text-decoration:underline;text-underline-offset:3px}
  .form-success{display:none;margin-top:14px;padding:12px 14px;background:rgba(198,242,78,.24);border:1px solid rgba(15,27,22,.12);border-radius:var(--radius);font-size:14px}
  .form-success.show{display:block}
  .btn.is-loading{opacity:.6;pointer-events:none}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--brand);color:var(--ink-inv-2);padding:64px 0 28px;margin-top:0}
  .footer-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
  .footer-brand .shell-logo{padding:0 0 16px;font-size:16px}
  .footer-brand p{font-size:14px;line-height:1.7;margin:0;color:var(--ink-inv-2);max-width:260px}
  .footer-col h3{font-size:14px;color:var(--ink-inv);margin-bottom:16px;font-weight:700}
  .footer-col ul li{margin-bottom:10px;font-size:14px;line-height:1.6}
  .footer-col a{color:var(--ink-inv-2)}
  .footer-col a:hover{color:var(--accent)}
  .footer-col span{color:var(--ink-inv-2)}
  .footer-bottom{
    border-top:1px solid rgba(242,241,236,.14);padding-top:22px;
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:var(--ink-inv-2);
  }

  /* ============ 动效 ============ */
  .fade-in{opacity:0;transform:translateY(12px);transition:opacity .24s cubic-bezier(.22,.61,.36,1),transform .24s cubic-bezier(.22,.61,.36,1)}
  .fade-in.visible{opacity:1;transform:none}

  @media (prefers-reduced-motion: reduce){
    .fade-in{opacity:1;transform:none;transition:none}
    html{scroll-behavior:auto}
    .btn:hover i{transform:none}
  }

  /* ============ 响应式 ============ */
  @media (max-width:1199px){
    :root{--shell-w:72px;--sec:72px}
    .container{padding:0 24px}
    .logo-text{display:none}
    .shell-logo{justify-content:center;padding:0 8px 22px}
    .side-nav{padding:0 10px}
    .side-nav a{justify-content:center;padding:12px 8px}
    .side-nav a .nav-text{
      position:absolute;left:calc(100% + 10px);top:50%;transform:translateY(-50%);
      background:var(--brand-soft);color:var(--ink-inv);
      padding:8px 12px;border-radius:var(--radius);white-space:nowrap;
      font-size:13px;font-weight:600;box-shadow:var(--shadow-2);
      opacity:0;pointer-events:none;transition:opacity .12s ease;z-index:60;
    }
    .side-nav a:hover .nav-text{opacity:1}
    .shell-cta{padding:22px 10px 0}
    .shell-cta .btn{padding:12px;font-size:0}
    .shell-cta .btn i{font-size:16px}
    .shell-meta{display:none}
    .cta-panel{grid-template-columns:1fr;gap:28px;padding:36px}
    .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
    .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
    .metric{padding:26px 20px 6px 20px}
    .metrics .metric:nth-child(2n){border-right:0}
  }

  @media (max-width:767px){
    :root{--sec:56px}
    body{font-size:16px;line-height:1.8}
    .app-shell{display:none}
    .mobile-bar{display:flex}
    .main-content,.site-footer{margin-left:0}
    .main-content{padding-top:64px}
    .container{padding:0 16px}
    .page-hero{padding:64px 0 56px}
    .hero-actions .btn{width:100%}
    .stats-strip{margin-top:0;padding-top:0}
    .stats-grid{box-shadow:none;padding:0;border-radius:var(--radius);border:1px solid var(--line);margin-top:24px}
    .stat{border-right:0;border-bottom:1px solid var(--line);padding:20px 18px}
    .stats-grid .cell:last-child .stat{border-bottom:0}
    .step{grid-template-columns:64px minmax(0,1fr);gap:16px;padding-bottom:34px}
    .step-no{width:64px;height:56px;font-size:22px}
    .step::after{left:32px;top:64px}
    .row-list li{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:18px 2px}
    .row-icon{width:44px;height:44px;font-size:15px}
    .row-meta{grid-column:2;margin-top:6px}
    .metrics{grid-template-columns:1fr;border-top:0;margin-top:36px}
    .metric{border-right:0;border-top:1px solid rgba(242,241,236,.16);padding:22px 0 6px}
    .metrics .metric:first-child{border-top:0;padding-top:0}
    .cta-panel{padding:28px 20px}
    .footer-cols{grid-template-columns:1fr;gap:28px}
    .footer-bottom{flex-direction:column;gap:8px}
    .reveal{padding:26px 20px;margin:0}
  }