/* roulang page: index */
:root{
  --ink-900:#0B1A16;
  --brand-700:#123B33;
  --brand-500:#1E5A4C;
  --lime-400:#C7F03C;
  --sand-50:#F7F4EC;
  --sand-100:#EDE8DC;
  --line:#DCD6C6;
  --white:#FFFFFF;
  --text:#16211E;
  --text-muted:#5A6A64;
  --error:#B4341F;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,26,22,.06);
  --sh-2:0 12px 28px -12px rgba(11,26,22,.18);
  --sh-3:0 24px 60px -20px rgba(11,26,22,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--sand-50);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Inter",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.8;
  font-feature-settings:"tnum";
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-500);}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.16;letter-spacing:-.018em;font-weight:900;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
time,.num{font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--sand-100);}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.14em;font-weight:700;
  text-transform:uppercase;color:var(--brand-500);margin-bottom:14px;
}
.eyebrow-light{color:var(--lime-400);}
.h2{font-size:clamp(26px,3.4vw,38px);}
.lead{font-size:17px;color:var(--text-muted);max-width:62ch;line-height:1.85;}
.section-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;margin-bottom:40px;}
.section-head .lead{margin-top:12px;}
.textlink{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--brand-700);
  border-bottom:2px solid var(--brand-700);padding-bottom:2px;transition:border-color .24s var(--ease),color .24s var(--ease);
}
.textlink:hover{border-color:var(--lime-400);color:var(--brand-500);}
.textlink::after{content:"→";font-weight:700;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);font-weight:700;line-height:1;border:1.5px solid transparent;
  padding:0 22px;height:44px;font-size:15px;white-space:nowrap;
  transition:transform .16s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:active{transform:scale(.985);}
.btn-sm{height:36px;font-size:14px;padding:0 16px;}
.btn-md{height:44px;}
.btn-lg{height:52px;font-size:16px;padding:0 28px;}
.btn-primary{background:var(--lime-400);color:var(--ink-900);}
.btn-primary:hover{background:var(--ink-900);color:var(--lime-400);}
.btn-outline{background:transparent;border-color:var(--brand-700);color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-700);color:var(--white);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.7);color:#fff;}
.btn-ghost:hover{background:#fff;color:var(--ink-900);border-color:#fff;}
.btn-ink{background:var(--brand-700);color:#fff;}
.btn-ink:hover{background:var(--brand-500);color:#fff;}
.btn:focus-visible,a:focus-visible,input:focus-visible,button:focus-visible{
  outline:3px solid var(--lime-400);outline-offset:2px;border-radius:var(--r-pill);
}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--sand-100);color:var(--text-muted);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-cat{background:var(--brand-700);color:#fff;}
.badge-lime{background:var(--lime-400);color:var(--ink-900);}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:50;background:var(--white);transition:box-shadow .2s var(--ease);}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.topbar{border-bottom:1px solid var(--line);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand-700);color:var(--lime-400);
  display:inline-flex;align-items:center;justify-content:center;font-weight:900;font-size:14px;letter-spacing:-.04em;
}
.brand-text{font-size:17px;font-weight:900;letter-spacing:-.01em;white-space:nowrap;}
.topbar-actions{display:flex;align-items:center;gap:14px;}
.site-search{display:flex;align-items:center;background:var(--sand-100);border:1px solid var(--line);border-radius:var(--r-pill);padding:0 6px 0 16px;height:40px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);}
.site-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(199,240,60,.55);}
.site-search input{border:0;background:transparent;height:38px;width:210px;outline:none;font-size:14px;color:var(--text);}
.site-search input::placeholder{color:var(--text-muted);}
.site-search button{
  width:30px;height:30px;border:0;border-radius:50%;background:var(--brand-700);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
}
.site-search button:hover{background:var(--brand-500);}
.channelbar{background:var(--white);}
.channelbar-inner{display:flex;align-items:stretch;gap:28px;overflow-x:auto;scrollbar-width:none;}
.channelbar-inner::-webkit-scrollbar{display:none;}
.channel{
  position:relative;display:inline-flex;align-items:center;height:52px;white-space:nowrap;
  font-size:15px;font-weight:500;color:var(--text);padding-top:2px;
}
.channel::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--lime-400);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.channel:hover{color:var(--brand-700);}
.channel:hover::after{transform:scaleX(1);}
.channel.is-active{font-weight:700;color:var(--brand-700);}
.channel.is-active::after{transform:scaleX(1);background:var(--brand-700);}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--ink-900);min-height:82vh;display:flex;align-items:center;padding:100px 0 92px;}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.02);}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,26,22,.94) 0%,rgba(18,59,51,.86) 40%,rgba(18,59,51,.34) 72%,rgba(18,59,51,0) 100%);
}
.hero-inner{position:relative;z-index:2;width:100%;}
.hero-copy{color:#fff;padding-right:24px;}
.hero h1{
  color:#fff;font-size:clamp(32px,4.6vw,58px);font-weight:900;letter-spacing:-.02em;line-height:1.14;max-width:14ch;
}
.hero-sub{color:rgba(255,255,255,.86);font-size:clamp(16px,1.4vw,19px);line-height:1.8;margin-top:22px;max-width:40ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:34px;margin-top:52px;padding-top:26px;border-top:1px solid rgba(255,255,255,.18);}
.hero-stats li{color:#fff;}
.hero-stats .num{display:block;font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.1;color:var(--lime-400);}
.hero-stats .label{display:block;font-size:13px;color:rgba(255,255,255,.7);margin-top:6px;}
.hero-card{
  background:rgba(255,255,255,.97);border-radius:var(--r-lg);padding:26px 24px;box-shadow:var(--sh-3);
  border:1px solid rgba(255,255,255,.6);
}
.hero-card h2{font-size:17px;font-weight:800;margin-bottom:14px;}
.hero-card h2 span{color:var(--brand-500);}
.hero-card-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);}
.hero-card-list li:last-child{border-bottom:0;}
.hero-card-list .k{font-size:12px;font-weight:700;color:var(--brand-500);min-width:52px;padding-top:3px;letter-spacing:.04em;}
.hero-card-list .v{font-size:14px;line-height:1.7;color:var(--text);}
.hero-card-foot{margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;}

/* 卖点 */
.feature-main{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);height:100%;display:flex;flex-direction:column;
}
.feature-main:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.feature-main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.feature-main .body{padding:26px;}
.feature-main h2{font-size:clamp(22px,2.2vw,27px);margin-bottom:12px;}
.numbox{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);padding:26px 22px;height:100%;
  display:flex;flex-direction:column;justify-content:space-between;gap:18px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.numbox:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.numbox .no{
  font-size:46px;font-weight:900;line-height:1;letter-spacing:-.03em;
  color:transparent;-webkit-text-stroke:1.6px var(--brand-500);
}
.numbox h3{font-size:20px;margin:14px 0 10px;}
.numbox p{font-size:15px;color:var(--text-muted);line-height:1.8;}
.numbox .bar{width:38px;height:4px;border-radius:2px;background:var(--lime-400);margin-bottom:14px;}

/* 场景演示 */
.scene{position:relative;}
.scene + .scene{margin-top:96px;}
.scene-media{border-radius:var(--r-md);overflow:hidden;position:relative;}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.scene-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,26,22,0) 55%,rgba(11,26,22,.36) 100%);}
.scene-copy h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:16px;}
.scene-copy p{color:var(--text-muted);font-size:16px;}
.point-list{margin-top:22px;display:grid;gap:12px;}
.point-list li{position:relative;padding-left:20px;font-size:15px;font-weight:600;color:var(--text);}
.point-list li::before{content:"";position:absolute;left:0;top:11px;width:10px;height:2px;background:var(--lime-400);}
.rail{position:relative;padding-left:26px;}
.rail::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;background:repeating-linear-gradient(180deg,var(--brand-500) 0 8px,transparent 8px 16px);}

/* 资讯列表 */
.news-feature{
  display:flex;gap:22px;background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;height:100%;transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.news-feature .thumb{flex:0 0 260px;border-radius:var(--r-sm);overflow:hidden;background:var(--sand-100);}
.news-feature .thumb img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}
.news-feature .txt{display:flex;flex-direction:column;gap:10px;min-width:0;}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-muted);}
.news-feature h3{font-size:clamp(19px,1.9vw,23px);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-feature p{font-size:15px;color:var(--text-muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-more-line{margin-top:auto;font-size:14px;font-weight:700;color:var(--brand-700);}
.news-side{display:grid;gap:20px;height:100%;}
.news-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.news-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-card h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card p{font-size:14px;color:var(--text-muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-lines{margin-top:26px;border-top:1px solid var(--line);}
.news-lines li{border-bottom:1px solid var(--line);}
.news-lines a{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:16px 2px;}
.news-lines a:hover .news-lines-title{color:var(--brand-500);}
.news-lines-title{font-size:16px;font-weight:600;color:var(--text);transition:color .2s var(--ease);}
.news-lines-meta{font-size:13px;color:var(--text-muted);display:inline-flex;align-items:center;gap:8px;}
.news-lines-meta i{font-style:normal;opacity:.5;}
.empty-state{
  background:var(--white);border:1px dashed var(--line);border-radius:var(--r-md);
  padding:48px 28px;text-align:center;color:var(--text-muted);
}
.empty-state svg{margin:0 auto 14px;}
.empty-state p{margin-bottom:16px;font-size:15px;}

/* 社会认同 */
.stat-cell{
  border-radius:var(--r-md);padding:26px 22px;border:1px solid var(--line);background:var(--white);
  display:flex;flex-direction:column;gap:8px;height:100%;
}
.stat-cell.is-dark{background:var(--ink-900);border-color:rgba(199,240,60,.35);color:#fff;}
.stat-cell.is-dark .stat-label{color:rgba(255,255,255,.68);}
.stat-cell .stat-num{font-size:clamp(26px,2.8vw,34px);font-weight:800;line-height:1.1;color:var(--brand-700);}
.stat-cell.is-dark .stat-num{color:var(--lime-400);}
.stat-cell .stat-label{font-size:14px;color:var(--text-muted);line-height:1.7;}
.quote-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);padding:32px 28px;height:100%;
  position:relative;display:flex;flex-direction:column;justify-content:space-between;gap:22px;
}
.quote-card::before{
  content:"“";position:absolute;top:6px;left:22px;font-size:88px;line-height:1;color:var(--sand-100);font-weight:900;
}
.quote-card blockquote{margin:0;position:relative;z-index:1;font-size:17px;line-height:1.9;color:var(--text);}
.quote-card figcaption{font-size:14px;color:var(--text-muted);font-weight:600;}

/* 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;text-align:left;position:relative;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-q:hover{color:var(--brand-700);}
.faq-q .sign{
  position:absolute;right:6px;top:50%;width:20px;height:20px;margin-top:-10px;
  transition:transform .22s var(--ease);
}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;background:var(--brand-700);border-radius:2px;}
.faq-q .sign::before{left:0;right:0;top:9px;height:2px;}
.faq-q .sign::after{top:0;bottom:0;left:9px;width:2px;transition:transform .22s var(--ease);}
.faq-item.is-open .faq-q .sign{transform:rotate(90deg);}
.faq-item.is-open .faq-q .sign::after{transform:scaleY(0);}
.faq-a{display:none;padding:0 0 22px;}
.faq-item.is-open .faq-a{display:block;}
.faq-a .inner{background:var(--sand-100);border-radius:12px;padding:20px;font-size:15px;color:var(--text-muted);line-height:1.85;}

/* 表单小块 */
.mini-form{background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);padding:26px;}
.mini-form label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.mini-form input{
  width:100%;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);padding:0 14px;
  background:var(--sand-100);outline:none;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.mini-form input:focus{border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 3px rgba(199,240,60,.5);}
.mini-form .row{margin-bottom:16px;}
.mini-form .actions{display:flex;justify-content:flex-end;}
.hint{font-size:13px;color:var(--text-muted);margin-top:6px;}

/* 最终 CTA */
.cta-band{
  background:var(--ink-900);color:#fff;padding:88px 0;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.16;
  background-image:repeating-linear-gradient(135deg,rgba(199,240,60,.6) 0 2px,transparent 2px 16px);
}
.cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;}
.cta-inner h2{color:#fff;font-size:clamp(24px,3vw,34px);}
.cta-inner p{color:rgba(255,255,255,.75);margin-top:12px;font-size:16px;max-width:56ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 页脚 */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.78);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--lime-400);}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.7);font-size:13px;}
.to-top:hover{color:var(--lime-400);}

/* 底部固定转化条 */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--white);
  border-top:1px solid var(--line);box-shadow:var(--sh-2);
  transform:translateY(120%);transition:transform .24s var(--ease);
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-cta.is-visible{transform:translateY(0);}
.sticky-cta-inner{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;min-height:56px;padding-top:8px;padding-bottom:8px;}
.sticky-cta p{font-size:15px;font-weight:600;color:var(--text);}
.sticky-cta .cta-actions{gap:10px;}

/* 进场动画 */
.reveal-up{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal-up.is-in{opacity:1;transform:none;}

/* 图片占位纹理 */
.img-fallback{background:var(--sand-100);background-image:repeating-linear-gradient(135deg,rgba(18,59,51,.07) 0 2px,transparent 2px 12px);}

/* 响应式 */
@media (max-width:1199px){
  .site-search input{width:160px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .scene + .scene{margin-top:64px;}
  .hero{min-height:auto;padding:72px 0 64px;}
  .hero-copy{padding-right:0;}
  .hero-card{margin-top:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .sticky-cta{transform:translateY(0);}
  body{padding-bottom:78px;}
  .news-feature{flex-direction:column;}
  .news-feature .thumb{flex:none;width:100%;}
  .news-side{margin-top:20px;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .topbar-inner{min-height:56px;gap:10px;}
  .brand-text{font-size:15px;}
  .site-search{display:none;}
  .channel{gap:20px;}
  .channelbar-inner{gap:20px;}
  .hero-stats{gap:22px;margin-top:36px;}
  .hero-card{padding:20px;}
  .feature-main .body{padding:20px;}
  .quote-card{padding:26px 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:64px 0;}
  .sticky-cta p{font-size:14px;}
  .sticky-cta .btn{height:40px;font-size:14px;padding:0 16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal-up{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --ink-900:#0B1A16;
  --brand-700:#123B33;
  --brand-500:#1E5A4C;
  --lime-400:#C7F03C;
  --sand-50:#F7F4EC;
  --sand-100:#EDE8DC;
  --line:#DCD6C6;
  --white:#FFFFFF;
  --text:#16211E;
  --text-muted:#5A6A64;
  --error:#B4341F;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,26,22,.06);
  --sh-2:0 12px 28px -12px rgba(11,26,22,.18);
  --sh-3:0 24px 60px -20px rgba(11,26,22,.28);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--sand-50);
  padding-bottom:84px;
}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:var(--brand-500);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:800;letter-spacing:-.015em;line-height:1.2;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:3px solid var(--lime-400);outline-offset:2px;border-radius:4px;}
.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-pill);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  text-decoration:none;
  transition:transform .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:active{transform:scale(.985);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-primary{background:var(--lime-400);color:var(--ink-900);}
.btn-primary:hover{background:var(--ink-900);color:var(--lime-400);}
.btn-ghost{background:transparent;border-color:var(--brand-700);color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-700);color:var(--white);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.7);color:var(--white);}
.btn-outline-light:hover{background:var(--white);color:var(--ink-900);border-color:var(--white);}
.link-more{
  font-size:15px;
  font-weight:700;
  color:var(--brand-700);
  border-bottom:2px solid var(--lime-400);
  padding-bottom:2px;
}
.link-more:hover{border-bottom-color:var(--brand-700);}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--sand-100);
  color:var(--text-muted);
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
}
.tag-lime{background:var(--lime-400);color:var(--ink-900);}
.tag-brand{background:var(--brand-700);color:var(--white);}
.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--brand-500);
  margin-bottom:12px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:var(--ink-900);
}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-700);
  color:var(--lime-400);
  border-radius:10px;
  font-family:Inter,system-ui,sans-serif;
  font-size:15px;
  font-weight:800;
  letter-spacing:.02em;
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;}
.topbar-actions{display:flex;align-items:center;gap:14px;}
.site-search{
  display:flex;
  align-items:center;
  background:var(--sand-100);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:3px 4px 3px 14px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.site-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(199,240,60,.55);}
.site-search input{
  border:0;
  background:transparent;
  height:32px;
  width:210px;
  font-size:14px;
  color:var(--text);
  outline:none;
}
.site-search input::placeholder{color:var(--text-muted);}
.site-search button{
  width:32px;height:32px;
  border:0;
  border-radius:var(--r-pill);
  background:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;
}
.site-search button:hover{background:var(--brand-500);}

.channelbar{background:var(--white);border-bottom:1px solid var(--line);}
.channelbar-inner{
  display:flex;
  align-items:stretch;
  gap:28px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channelbar-inner::-webkit-scrollbar{display:none;}
.channel{
  position:relative;
  flex:0 0 auto;
  padding:13px 0 11px;
  font-size:15px;
  font-weight:500;
  color:var(--text-muted);
  white-space:nowrap;
  border-bottom:3px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.channel:hover{color:var(--brand-700);border-bottom-color:var(--brand-500);}
.channel.is-active{color:var(--brand-700);font-weight:700;border-bottom-color:var(--brand-700);}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:64px 0 52px;
  color:var(--white);
  background:
    linear-gradient(100deg,rgba(11,26,22,.94) 0%,rgba(18,59,51,.84) 48%,rgba(30,90,76,.42) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.86);}
.breadcrumb a:hover{color:var(--lime-400);}
.breadcrumb span.sep{opacity:.55;}
.breadcrumb .current{color:rgba(255,255,255,.72);}
.page-hero h1{
  font-size:clamp(32px,5.2vw,52px);
  font-weight:900;
  color:var(--white);
  letter-spacing:-.02em;
  margin-bottom:16px;
}
.page-hero .hero-sub{
  font-size:clamp(15px,1.8vw,18px);
  line-height:1.75;
  color:rgba(255,255,255,.86);
  max-width:620px;
  margin:0;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-tags .tag{background:rgba(255,255,255,.14);color:rgba(255,255,255,.9);font-weight:500;letter-spacing:.04em;}

/* ---------- 导语 + 指标条 ---------- */
.lede{padding:72px 0 0;}
.lede-inner{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px clamp(20px,3vw,40px);
}
.lede p{font-size:17px;line-height:1.9;color:var(--text);max-width:900px;}
.lede p + p{margin-top:.9em;}

.metric-strip{
  margin-top:24px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:var(--brand-700);
  border-radius:var(--r-lg);
  overflow:hidden;
}
.metric{
  padding:24px 22px;
  border-right:1px solid rgba(255,255,255,.14);
}
.metric:last-child{border-right:0;}
.metric .num{
  display:block;
  font-family:Inter,system-ui,sans-serif;
  font-size:clamp(24px,3vw,32px);
  font-weight:800;
  color:var(--lime-400);
  line-height:1.1;
}
.metric .lbl{
  display:block;
  margin-top:6px;
  font-size:13px;
  color:rgba(255,255,255,.78);
  letter-spacing:.04em;
}

/* ---------- 图文交替 ---------- */
.section{padding:88px 0 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(26px,3.6vw,38px);margin-bottom:14px;}
.section-head p{color:var(--text-muted);font-size:16px;margin:0;}

.media-row{align-items:center;margin-bottom:64px;}
.media-row:last-child{margin-bottom:0;}
.media-copy h3{font-size:clamp(20px,2.4vw,24px);margin:12px 0 14px;}
.media-copy p{color:var(--text);font-size:16.5px;line-height:1.85;}
.bullet-list{margin-top:20px;}
.bullet-list li{
  position:relative;
  padding-left:20px;
  margin-bottom:10px;
  font-size:15px;
  color:var(--text-muted);
}
.bullet-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:10px;height:2px;
  background:var(--lime-400);
}
.media-figure{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--sand-100);
}
.media-figure img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.media-figure .fig-note{
  position:absolute;
  left:16px;bottom:16px;
  background:rgba(11,26,22,.86);
  color:var(--white);
  font-size:12px;
  letter-spacing:.04em;
  padding:6px 12px;
  border-radius:var(--r-pill);
}
.rail{
  position:relative;
  padding-left:0;
}
.rail::before{
  content:"";
  position:absolute;
  left:-22px;top:6px;bottom:6px;
  width:1px;
  background:repeating-linear-gradient(to bottom,var(--line) 0 6px,transparent 6px 14px);
}

/* ---------- 样张列表 ---------- */
.sample-wrap{
  background:var(--sand-100);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:88px 0;
  margin-top:88px;
}
.sample-list{display:grid;gap:20px;}
.sample-item{
  display:grid;
  grid-template-columns:160px 1fr;
  gap:24px;
  align-items:stretch;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:20px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.sample-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.sample-thumb{
  border-radius:var(--r-sm);
  overflow:hidden;
  background:var(--sand-100);
  min-height:110px;
}
.sample-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.sample-body{display:flex;flex-direction:column;justify-content:center;gap:8px;}
.sample-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.sample-body h3{
  font-size:19px;
  line-height:1.45;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.sample-body h3 a{color:var(--text);}
.sample-body h3 a:hover{color:var(--brand-700);}
.sample-body p{
  font-size:14.5px;
  color:var(--text-muted);
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.sample-time{
  font-size:13px;
  color:var(--text-muted);
  font-variant-numeric:tabular-nums;
}

/* ---------- FAQ ---------- */
.faq{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
}
.faq-q:hover{color:var(--brand-700);}
.faq-sign{
  flex:0 0 auto;
  width:26px;height:26px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--sand-100);
  color:var(--brand-700);
  font-size:16px;
  font-weight:700;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease);
}
.faq-item.is-open .faq-sign{transform:rotate(90deg);background:var(--lime-400);color:var(--ink-900);}
.faq-a{
  display:none;
  margin:0 0 20px;
  padding:20px;
  background:var(--sand-100);
  border-radius:12px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--text);
}
.faq-item.is-open .faq-a{display:block;}

/* ---------- CTA 带 ---------- */
.cta-band{
  margin-top:88px;
  background:
    repeating-linear-gradient(135deg,rgba(255,255,255,.035) 0 2px,transparent 2px 12px),
    var(--ink-900);
  color:var(--white);
  padding:80px 0;
}
.cta-band h2{color:var(--white);font-size:clamp(26px,3.6vw,36px);margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.76);max-width:620px;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.76);padding:64px 0 28px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text{color:var(--white);}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px;}
.footer-col h4{color:var(--white);font-size:14px;font-weight:700;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:rgba(255,255,255,.7);}
.footer-col ul li a{color:rgba(255,255,255,.7);}
.footer-col ul li a:hover{color:var(--lime-400);}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.to-top{color:rgba(255,255,255,.7);font-weight:600;}
.to-top:hover{color:var(--lime-400);}

/* ---------- 底部固定条 ---------- */
.sticky-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:80;
  background:var(--white);
  border-top:1px solid var(--line);
  box-shadow:var(--sh-2);
  transform:translateY(110%);
  transition:transform .24s var(--ease);
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-cta.is-visible{transform:translateY(0);}
.sticky-cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:56px;
  padding-top:8px;
  padding-bottom:8px;
}
.sticky-cta p{margin:0;font-size:15px;color:var(--text);}
.sticky-cta-actions{display:flex;gap:10px;flex-shrink:0;}

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

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .media-row-media{order:2;}
  .media-row-text{order:1;}
  .media-row{gap:28px;}
  .metric-strip{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(2){border-right:0;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid rgba(255,255,255,.14);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .sticky-cta{transform:translateY(0);}
}
@media (max-width:767px){
  body{font-size:16px;padding-bottom:96px;}
  .site-search{display:none;}
  .topbar-inner{height:56px;}
  .channelbar-inner{gap:22px;}
  .page-hero{padding:48px 0 40px;}
  .lede{padding-top:48px;}
  .section{padding-top:64px;}
  .sample-wrap{margin-top:64px;padding:64px 0;}
  .cta-band{margin-top:64px;padding:64px 0;}
  .sample-item{grid-template-columns:1fr;gap:16px;}
  .sample-thumb{min-height:180px;}
  .sticky-cta-inner{flex-wrap:wrap;justify-content:center;}
  .sticky-cta p{font-size:14px;text-align:center;width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:519px){
  .container{padding:0 18px;}
  .metric-strip{grid-template-columns:1fr;}
  .metric{border-right:0;border-bottom:1px solid rgba(255,255,255,.14);}
  .metric:last-child{border-bottom:0;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --ink-900:#0B1A16;
  --brand-700:#123B33;
  --brand-500:#1E5A4C;
  --lime-400:#C7F03C;
  --sand-50:#F7F4EC;
  --sand-100:#EDE8DC;
  --line:#DCD6C6;
  --white:#FFFFFF;
  --text:#16211E;
  --text-muted:#5A6A64;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,26,22,.06);
  --sh-2:0 12px 28px -12px rgba(11,26,22,.18);
  --sh-3:0 24px 60px -20px rgba(11,26,22,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-bottom:57px;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--sand-50);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-500);}
button,input{font:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;}
p{margin:0;}
ul,ol{margin:0;padding:0;}
time,.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:3px solid var(--lime-400);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:20px;padding-right:20px;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;
  font-size:15px;font-weight:600;line-height:1;border-radius:var(--r-pill);border:1.5px solid transparent;
  cursor:pointer;white-space:nowrap;transition:all .18s var(--ease);}
.btn:active{transform:scale(.985);}
.btn-primary{background:var(--lime-400);color:var(--ink-900);}
.btn-primary:hover{background:var(--ink-900);color:var(--lime-400);transform:translateY(-2px);}
.btn-ghost{background:transparent;border-color:var(--brand-700);color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);}
.btn-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
.btn-light:hover{background:#fff;color:var(--ink-900);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.06em;}
.badge-cat{background:var(--brand-700);color:#fff;}
.badge-soft{background:var(--sand-100);color:var(--text-muted);}
.badge-lime{background:var(--lime-400);color:var(--ink-900);}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--white);transition:box-shadow .24s var(--ease);}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.topbar{border-bottom:1px solid var(--line);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);}
.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--brand-700);color:var(--lime-400);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;letter-spacing:.02em;}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;}
.brand:hover .brand-text{color:var(--brand-700);}
.topbar-actions{display:flex;align-items:center;gap:14px;}
.site-search{display:flex;align-items:center;gap:6px;height:40px;padding:0 6px 0 16px;
  background:var(--sand-100);border:1px solid var(--line);border-radius:var(--r-pill);}
.site-search input{width:210px;border:0;background:transparent;outline:none;font-size:14px;color:var(--text);}
.site-search input::placeholder{color:var(--text-muted);}
.site-search button{width:30px;height:30px;flex:0 0 auto;border:0;border-radius:50%;background:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:background .18s var(--ease);}
.site-search button:hover{background:var(--brand-500);}
.channelbar{border-bottom:1px solid var(--line);background:var(--white);}
.channelbar-inner{display:flex;align-items:center;gap:28px;overflow-x:auto;scrollbar-width:none;}
.channelbar-inner::-webkit-scrollbar{display:none;}
.channel{position:relative;display:inline-flex;align-items:center;height:52px;
  font-size:15px;font-weight:500;color:var(--text-muted);white-space:nowrap;}
.channel::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--lime-400);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);}
.channel:hover{color:var(--brand-700);}
.channel:hover::after{transform:scaleX(1);}
.channel.is-active{color:var(--brand-700);font-weight:700;}
.channel.is-active::after{transform:scaleX(1);}

/* ---------- 文章页头 ---------- */
.article-hero{position:relative;background:var(--sand-100);border-bottom:1px solid var(--line);overflow:hidden;}
.article-hero::after{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(18,59,51,.045) 0 2px,transparent 2px 13px);}
.article-hero-inner{position:relative;z-index:1;padding:30px 0 40px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);}
.breadcrumb a{color:var(--text-muted);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:#C3BCA8;}
.breadcrumb .current{max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-muted);}
.hero-badge-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;}
.article-title{font-size:clamp(28px,4.2vw,42px);line-height:1.24;font-weight:800;color:var(--ink-900);margin:18px 0 18px;max-width:24ch;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--text-muted);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3BCA8;}

/* ---------- 主布局 ---------- */
.article-section{padding:56px 0 88px;}
.article-layout{margin:0 -12px;}
.article-layout > .cell{margin:0 12px;width:calc(100% - 24px);}
.article-main{min-width:0;}
.article-body{max-width:760px;font-size:17.5px;line-height:1.92;color:var(--text);}
.article-body p{margin:0 0 1.35em;}
.article-body h2{position:relative;font-size:26px;line-height:1.35;font-weight:800;color:var(--ink-900);
  margin:2em 0 .8em;padding-left:18px;}
.article-body h2::before{content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:3px;border-radius:2px;background:var(--lime-400);}
.article-body h3{font-size:20px;line-height:1.45;font-weight:700;color:var(--ink-900);margin:1.75em 0 .6em;}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink-900);margin:1.5em 0 .5em;}
.article-body a{color:var(--brand-700);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-500);}
.article-body ul,.article-body ol{margin:0 0 1.35em;padding-left:1.35em;}
.article-body li{margin-bottom:.5em;line-height:1.85;}
.article-body ul li::marker{color:var(--brand-500);}
.article-body ol li::marker{color:var(--brand-700);font-weight:700;}
.article-body blockquote{margin:1.6em 0;padding:20px 24px;background:var(--sand-100);
  border-left:3px solid var(--brand-700);border-radius:12px;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:1.6em auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--text-muted);text-align:center;margin-top:8px;}
.article-body table{width:100%;min-width:520px;border-collapse:collapse;font-size:15px;margin:0;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top;}
.article-body th{background:var(--sand-100);font-weight:700;color:var(--ink-900);}
.article-body tbody tr:nth-child(even){background:rgba(237,232,220,.4);}
.article-body pre{margin:0;background:var(--ink-900);color:#E6F0EC;padding:18px 20px;border-radius:12px;
  overflow-x:auto;font-size:14px;line-height:1.7;}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}
.article-body p code,.article-body li code{background:var(--sand-100);padding:2px 6px;border-radius:6px;font-size:.9em;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}
.scroll-x{overflow-x:auto;max-width:100%;margin:1.6em 0;border-radius:12px;}
.scroll-x pre{border-radius:12px;}
.empty-state{background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  padding:52px 30px;text-align:center;box-shadow:var(--sh-1);}
.empty-state h2{font-size:22px;font-weight:800;color:var(--ink-900);margin-bottom:12px;}
.empty-state p{font-size:15px;color:var(--text-muted);max-width:44ch;margin:0 auto 24px;line-height:1.85;}

/* ---------- 标签 / 上下篇 / 推荐 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:52px;padding-top:28px;border-top:1px solid var(--line);}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 15px;border-radius:var(--r-pill);
  background:var(--sand-100);color:var(--text-muted);font-size:13px;transition:all .18s var(--ease);}
.tag:hover{background:var(--brand-700);color:#fff;}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px;}
.post-nav-item{display:flex;flex-direction:column;gap:8px;padding:18px 20px;background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-md);transition:all .18s var(--ease);}
.post-nav-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-500);}
.post-nav-item.next{align-items:flex-end;text-align:right;}
.post-nav-label{font-size:12px;letter-spacing:.08em;color:var(--text-muted);}
.post-nav-title{font-size:15px;font-weight:600;color:var(--text);}
.post-nav-item:hover .post-nav-title{color:var(--brand-700);}
.reco-block{margin-top:44px;}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px;}
.block-head h2{font-size:24px;font-weight:800;color:var(--ink-900);}
.block-head .link-more{font-size:14px;font-weight:600;color:var(--brand-700);border-bottom:2px solid var(--lime-400);padding-bottom:2px;}
.reco-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.reco-card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;transition:all .18s var(--ease);}
.reco-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-500);}
.reco-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--sand-100);}
.reco-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;}
.reco-body .reco-title{font-size:15.5px;font-weight:700;line-height:1.5;color:var(--ink-900);}
.reco-card:hover .reco-title{color:var(--brand-700);}
.reco-body .reco-desc{font-size:13.5px;line-height:1.75;color:var(--text-muted);}
.back-cat{margin-top:34px;}

/* ---------- 侧栏 ---------- */
.article-side{align-self:flex-start;min-width:0;}
.side-sticky{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px;}
.toc-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;box-shadow:var(--sh-1);}
.toc-title{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--text-muted);margin-bottom:14px;}
.toc-toggle{display:none;}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:2px;}
.toc-list a{display:block;padding:7px 12px;border-radius:var(--r-sm);font-size:14px;line-height:1.5;
  color:var(--text-muted);border-left:2px solid transparent;transition:all .18s var(--ease);}
.toc-list a:hover{background:var(--sand-50);color:var(--brand-700);}
.toc-list a.is-current{background:var(--sand-50);color:var(--brand-700);font-weight:700;border-left-color:var(--lime-400);}
.toc-list li.toc-h3 a{padding-left:26px;font-size:13.5px;}
.side-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;box-shadow:var(--sh-1);}
.side-card h3{font-size:16px;font-weight:800;color:var(--ink-900);margin-bottom:16px;}
.related-list{list-style:none;display:flex;flex-direction:column;gap:16px;}
.related-list a{display:flex;gap:12px;align-items:flex-start;}
.related-list img{width:64px;height:48px;border-radius:var(--r-sm);object-fit:cover;flex:0 0 auto;background:var(--sand-100);}
.related-list .r-title{font-size:14.5px;line-height:1.55;color:var(--text);font-weight:500;}
.related-list a:hover .r-title{color:var(--brand-700);}
.side-back{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-700);}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;background:var(--ink-900);color:#fff;padding:80px 0;overflow:hidden;}
.cta-band::after{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(199,240,60,.07) 0 2px,transparent 2px 15px);}
.cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-inner h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.3;color:#fff;max-width:20ch;}
.cta-inner p{font-size:15px;color:rgba(255,255,255,.7);margin-top:14px;max-width:48ch;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;padding-bottom:48px;}
.footer-brand .brand-text{color:#fff;font-size:16px;}
.footer-brand .brand-mark{background:var(--lime-400);color:var(--ink-900);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-top:16px;max-width:36ch;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:rgba(255,255,255,.68);line-height:1.7;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--lime-400);}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 26px;font-size:13px;color:rgba(255,255,255,.52);}
.to-top{color:rgba(255,255,255,.72);}
.to-top:hover{color:var(--lime-400);}

/* ---------- 文章底部轻条 ---------- */
.reader-bar{position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;border-top:1px solid var(--line);
  box-shadow:var(--sh-2);padding-bottom:env(safe-area-inset-bottom);transition:transform .24s var(--ease);}
.reader-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:56px;}
.reader-bar-inner > span{font-size:15px;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.reader-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media screen and (min-width:40em){
  .container{padding-left:32px;padding-right:32px;}
}
@media screen and (min-width:64em){
  .container{padding-left:48px;padding-right:48px;}
  .article-layout > .cell.large-8{width:calc(66.6667% - 24px);}
  .article-layout > .cell.large-4{width:calc(33.3333% - 24px);}
  .reader-bar{transform:translateY(130%);}
  .reader-bar.is-visible{transform:translateY(0);}
}
@media screen and (max-width:1023px){
  .site-search input{width:150px;}
  .article-section{padding:44px 0 72px;}
  .article-side{margin-top:40px;}
  .side-sticky{position:static;}
  .toc-panel{padding:16px 18px;}
  .toc-toggle{display:flex;width:100%;align-items:center;justify-content:space-between;
    background:transparent;border:0;padding:0;cursor:pointer;font-size:15px;font-weight:700;color:var(--ink-900);}
  .toc-toggle .toc-icon{font-size:20px;line-height:1;color:var(--brand-700);transition:transform .24s var(--ease);}
  .toc-panel.is-open .toc-toggle .toc-icon{transform:rotate(90deg);}
  .toc-title{display:none;}
  .toc-list{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);margin-top:0;}
  .toc-panel.is-open .toc-list{max-height:520px;overflow-y:auto;margin-top:14px;}
  .reco-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media screen and (max-width:639px){
  body{font-size:16px;}
  .topbar-inner{height:56px;}
  .brand-text{font-size:15px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:13px;}
  .site-search{display:none;}
  .channelbar-inner{gap:22px;}
  .article-hero-inner{padding:24px 0 30px;}
  .article-meta{gap:8px;font-size:13px;}
  .article-body{font-size:16.5px;line-height:1.88;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-item.next{align-items:flex-start;text-align:left;}
  .reco-grid{grid-template-columns:1fr;}
  .cta-band{padding:56px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;}
  .reader-bar-inner{gap:10px;}
  .reader-bar-inner > span{display:none;}
  .reader-actions{width:100%;justify-content:space-between;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0B1A16;
  --brand-700:#123B33;
  --brand-500:#1E5A4C;
  --lime-400:#C7F03C;
  --sand-50:#F7F4EC;
  --sand-100:#EDE8DC;
  --line:#DCD6C6;
  --white:#FFFFFF;
  --text:#16211E;
  --text-muted:#5A6A64;
  --danger:#B4341F;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,26,22,.06);
  --sh-2:0 12px 28px -12px rgba(11,26,22,.18);
  --sh-3:0 24px 60px -20px rgba(11,26,22,.28);
  --sp-64:64px;
  --sp-88:88px;
  --sp-112:112px;
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--sand-50);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.8;
  font-weight:400;
  padding-bottom:56px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-700);text-decoration:none;transition:color .18s cubic-bezier(.2,.7,.3,1);}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:800;letter-spacing:-.015em;line-height:1.2;}
h1{font-size:clamp(32px,4.2vw,48px);font-weight:900;}
h2{font-size:clamp(26px,3vw,36px);font-weight:900;}
h3{font-size:clamp(18px,1.6vw,21px);line-height:1.35;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,button{font-size:inherit;}
:focus-visible{outline:3px solid var(--lime-400);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 布局容器 ---------- */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){
  .container{padding-left:32px;padding-right:32px;}
}
@media (min-width:1024px){
  .container{padding-left:48px;padding-right:48px;}
}
.section{padding-top:var(--sp-64);padding-bottom:var(--sp-64);}
@media (min-width:1024px){
  .section{padding-top:var(--sp-88);padding-bottom:var(--sp-88);}
}
.section--tight{padding-top:48px;padding-bottom:48px;}
.section--alt{background:var(--sand-100);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ---------- 品牌与顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--white);
  box-shadow:0 1px 0 rgba(11,26,22,0);
  transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-1);}
.topbar{
  background:var(--white);
  border-bottom:1px solid var(--line);
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--brand-700);
  font-weight:800;
  letter-spacing:-.01em;
  flex:0 0 auto;
}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:10px;
  background:var(--brand-700);
  color:var(--lime-400);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-num);
  font-size:14px;
  font-weight:800;
  letter-spacing:.02em;
  flex:0 0 auto;
}
.brand-text{font-size:19px;white-space:nowrap;}
.topbar-actions{display:flex;align-items:center;gap:14px;}
.site-search{
  display:flex;
  align-items:center;
  gap:6px;
  height:38px;
  padding:0 5px 0 14px;
  background:var(--sand-100);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.site-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(199,240,60,.35);}
.site-search input[type="search"]{
  width:210px;
  height:34px;
  border:0;
  background:transparent;
  color:var(--text);
  font-size:14px;
  outline:none;
}
.site-search input[type="search"]::placeholder{color:var(--text-muted);}
.site-search button{
  width:28px;
  height:28px;
  border:0;
  border-radius:var(--r-pill);
  background:var(--brand-700);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:background .18s ease,transform .18s ease;
}
.site-search button:hover{background:var(--brand-500);}
.site-search button:active{transform:scale(.96);}
.channelbar{background:var(--white);border-bottom:1px solid var(--line);}
.channelbar-inner{
  display:flex;
  align-items:stretch;
  gap:28px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channelbar-inner::-webkit-scrollbar{display:none;}
.channel{
  position:relative;
  display:inline-block;
  padding:13px 0 11px;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  white-space:nowrap;
  border-bottom:3px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.channel:hover{color:var(--brand-500);border-bottom-color:rgba(30,90,76,.28);}
.channel.is-active{
  color:var(--brand-700);
  font-weight:700;
  border-bottom-color:var(--lime-400);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-pill);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  cursor:pointer;
  transition:background .18s cubic-bezier(.2,.7,.3,1),color .18s cubic-bezier(.2,.7,.3,1),border-color .18s cubic-bezier(.2,.7,.3,1),transform .12s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.985);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-primary{background:var(--lime-400);color:var(--ink-900);}
.btn-primary:hover{background:var(--ink-900);color:var(--lime-400);}
.btn-ghost{background:transparent;border-color:var(--brand-700);color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-700);color:var(--white);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.72);color:var(--white);}
.btn-outline-light:hover{background:var(--white);color:var(--ink-900);border-color:var(--white);}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:700;
  color:var(--brand-700);
  border-bottom:2px solid transparent;
  padding-bottom:2px;
  transition:border-color .2s ease,color .18s ease;
}
.link-arrow:hover{border-bottom-color:var(--lime-400);color:var(--brand-500);}

/* ---------- 通用标签 / 徽章 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-num);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--brand-500);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:3px;
  border-radius:2px;
  background:var(--lime-400);
  display:inline-block;
}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 11px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  background:var(--sand-100);
  color:var(--text-muted);
}
.badge-brand{background:var(--brand-700);color:var(--white);}
.badge-lime{background:var(--lime-400);color:var(--ink-900);}
.badge-outline{background:transparent;border:1px solid var(--line);color:var(--text-muted);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:36px;
}
.section-head p{color:var(--text-muted);max-width:640px;margin-top:12px;font-size:15px;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background-color:var(--brand-700);
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center 30%;
  color:var(--white);
  padding:44px 0 56px;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(11,26,22,.92) 0%,rgba(18,59,51,.82) 42%,rgba(18,59,51,.42) 100%);
}
.page-hero .container{position:relative;z-index:1;}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-bottom:22px;
  flex-wrap:wrap;
}
.crumbs a{color:rgba(255,255,255,.82);}
.crumbs a:hover{color:var(--lime-400);}
.crumbs .sep{opacity:.55;}
.crumbs .current{color:rgba(255,255,255,.62);}
.page-hero h1{color:var(--white);margin-bottom:18px;max-width:820px;}
.page-hero .lede{
  max-width:720px;
  font-size:16px;
  line-height:1.9;
  color:rgba(255,255,255,.86);
  margin:0;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-tags .badge{background:rgba(255,255,255,.12);color:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.18);}

/* ---------- 2×2 要点矩阵 ---------- */
.matrix-layout{align-items:flex-start;}
.sticky-title{
  position:sticky;
  top:104px;
  padding-right:12px;
}
.sticky-title h2{font-size:clamp(24px,2.4vw,30px);margin-bottom:14px;}
.sticky-title p{color:var(--text-muted);font-size:15px;line-height:1.85;}
.sticky-title .sticky-note{
  margin-top:22px;
  padding:18px 20px;
  background:var(--white);
  border:1px solid var(--line);
  border-left:4px solid var(--lime-400);
  border-radius:var(--r-md);
  font-size:14px;
  color:var(--text-muted);
  line-height:1.8;
}
.matrix{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.matrix-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 24px 24px;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease,border-color .18s ease;
}
.matrix-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,90,76,.28);}
.matrix-num{
  font-family:var(--font-num);
  font-size:38px;
  font-weight:800;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1.4px var(--brand-700);
  margin-bottom:14px;
  display:block;
}
.matrix-card h3{margin-bottom:10px;}
.matrix-card p{font-size:15px;color:var(--text-muted);line-height:1.85;}

/* ---------- 参数表 ---------- */
.table-scroll{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--white);
  box-shadow:var(--sh-1);
}
table.spec{
  width:100%;
  min-width:680px;
  border-collapse:collapse;
  font-size:15px;
}
table.spec caption{
  caption-side:top;
  text-align:left;
  padding:16px 20px;
  font-size:13px;
  color:var(--text-muted);
  border-bottom:1px solid var(--line);
}
table.spec th,table.spec td{
  padding:14px 20px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.spec thead th{
  background:var(--sand-100);
  color:var(--brand-700);
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  white-space:nowrap;
}
table.spec tbody tr:nth-child(even){background:rgba(237,232,220,.34);}
table.spec tbody tr:last-child td{border-bottom:0;}
table.spec td:first-child{font-weight:700;color:var(--text);white-space:nowrap;}
table.spec td{color:var(--text-muted);}
.table-foot{
  margin-top:14px;
  font-size:13px;
  color:var(--text-muted);
}

/* ---------- 示例内容列表 ---------- */
.sample-list{display:grid;gap:20px;}
.sample-item{
  display:grid;
  grid-template-columns:200px 1fr;
  gap:24px;
  align-items:center;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:18px;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease,border-color .18s ease;
}
.sample-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,90,76,.28);}
.sample-thumb{
  border-radius:var(--r-sm);
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--sand-100);
}
.sample-thumb img{width:100%;height:100%;object-fit:cover;}
.sample-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px;}
.sample-time{font-family:var(--font-num);font-size:13px;color:var(--text-muted);font-variant-numeric:tabular-nums;}
.sample-item h3{margin-bottom:8px;}
.sample-item h3 a{color:var(--text);}
.sample-item h3 a:hover{color:var(--brand-500);}
.sample-item p{font-size:15px;color:var(--text-muted);line-height:1.8;margin-bottom:12px;}
.sample-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand-700);}
.sample-more:hover{color:var(--brand-500);}

/* ---------- FAQ ---------- */
.faq{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:8px 26px;box-shadow:var(--sh-1);}
.faq details{border-bottom:1px solid var(--line);}
.faq details:last-child{border-bottom:0;}
.faq summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:color .18s ease;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--brand-500);}
.faq .toggle{
  flex:0 0 auto;
  width:26px;
  height:26px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-num);
  font-size:15px;
  font-weight:700;
  color:var(--brand-700);
  transition:transform .22s cubic-bezier(.2,.7,.3,1),background .18s ease;
}
.faq details[open] .toggle{transform:rotate(90deg);background:var(--lime-400);border-color:var(--lime-400);color:var(--ink-900);}
.faq .answer{
  background:var(--sand-100);
  border-radius:12px;
  padding:20px 22px;
  margin:0 0 22px;
  font-size:15px;
  line-height:1.9;
  color:var(--text-muted);
}

/* ---------- 深色 CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  color:var(--white);
  padding:72px 0;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(199,240,60,.06) 0 2px,transparent 2px 14px);
  pointer-events:none;
}
.cta-band .container{position:relative;z-index:1;}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{color:var(--white);margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.72);max-width:560px;font-size:16px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
@media (min-width:1024px){
  .cta-band{padding:96px 0;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:48px;
}
.footer-brand .brand{color:var(--white);margin-bottom:16px;}
.footer-brand .brand:hover{color:var(--white);}
.footer-brand p{color:rgba(255,255,255,.6);line-height:1.85;font-size:14px;max-width:320px;}
.footer-col h4{
  color:var(--white);
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{color:rgba(255,255,255,.6);}
.footer-col a{color:rgba(255,255,255,.6);}
.footer-col a:hover{color:var(--lime-400);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.52);
}
.to-top{color:rgba(255,255,255,.66);}
.to-top:hover{color:var(--lime-400);}

/* ---------- 底部固定转化条 ---------- */
.convert-bar{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:90;
  background:var(--white);
  border-top:1px solid var(--line);
  box-shadow:var(--sh-2);
  height:56px;
  padding-bottom:env(safe-area-inset-bottom);
  transform:translateY(0);
  transition:transform .24s cubic-bezier(.2,.7,.3,1);
}
.convert-inner{
  height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.convert-text{font-size:15px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.convert-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
@media (min-width:1024px){
  .convert-bar{transform:translateY(110%);}
  .convert-bar.is-visible{transform:translateY(0);}
}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.2,.7,.3,1),transform .5s cubic-bezier(.2,.7,.3,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .sticky-title{position:static;padding-right:0;margin-bottom:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{padding:64px 0;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .site-search input[type="search"]{width:130px;}
  .matrix{grid-template-columns:1fr;}
  .sample-item{grid-template-columns:1fr;gap:16px;}
  .sample-thumb{aspect-ratio:16/9;}
  .faq{padding:4px 18px;}
  .hero-tags{gap:8px;}
}
@media (max-width:639px){
  .topbar-inner{height:56px;}
  .brand-text{font-size:16px;}
  .site-search{display:none;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .convert-text{font-size:14px;}
  .btn-lg{height:48px;padding:0 20px;font-size:15px;}
  .page-hero{padding:32px 0 44px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
  .convert-bar{transform:translateY(0);}
}

/* roulang page: category3 */
:root{
  --ink-900:#0B1A16;
  --brand-700:#123B33;
  --brand-500:#1E5A4C;
  --lime-400:#C7F03C;
  --sand-50:#F7F4EC;
  --sand-100:#EDE8DC;
  --line:#DCD6C6;
  --white:#FFFFFF;
  --text:#16211E;
  --text-muted:#5A6A64;
  --danger:#B4341F;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,26,22,.06);
  --sh-2:0 12px 28px -12px rgba(11,26,22,.18);
  --sh-3:0 24px 60px -20px rgba(11,26,22,.28);
  --sp-1:20px;
  --sp-2:28px;
  --sp-3:48px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--sand-50);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease);}
a:hover,a:focus{color:var(--brand-500);}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.015em;line-height:1.18;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid var(--lime-400);outline-offset:2px;border-radius:4px;}
body,input,button{font-variant-numeric:tabular-nums;}

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

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--white);border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease);}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.topbar{border-bottom:1px solid var(--line);}
.topbar-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--brand-700);text-decoration:none;}
.brand:hover{color:var(--brand-700);}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand-700);color:var(--lime-400);display:grid;place-items:center;font-size:14px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.topbar-actions{display:flex;align-items:center;gap:14px;}
.site-search{display:flex;align-items:center;background:var(--sand-100);border:1px solid var(--line);border-radius:var(--r-pill);padding:0 6px 0 16px;height:40px;min-width:250px;}
.site-search input[type="search"]{flex:1;border:0;background:transparent;height:38px;font-size:14px;color:var(--text);outline:none;}
.site-search input[type="search"]::placeholder{color:var(--text-muted);}
.site-search button{width:30px;height:30px;border:0;border-radius:50%;background:var(--brand-700);display:grid;place-items:center;cursor:pointer;transition:background .2s var(--ease);}
.site-search button:hover{background:var(--brand-500);}
.channelbar{border-top:0;}
.channelbar-inner{display:flex;align-items:center;gap:28px;height:50px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.channelbar-inner::-webkit-scrollbar{display:none;}
.channel{position:relative;flex:0 0 auto;font-size:15px;font-weight:500;color:var(--text);padding:0 0 2px;line-height:50px;white-space:nowrap;}
.channel::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--lime-400);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);}
.channel:hover{color:var(--brand-700);}
.channel:hover::after{transform:scaleX(1);}
.channel.is-active{font-weight:700;color:var(--brand-700);}
.channel.is-active::after{transform:scaleX(1);background:var(--brand-700);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);font-weight:700;font-size:15px;line-height:1;padding:0 22px;height:44px;border:1.5px solid transparent;cursor:pointer;transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);}
.btn:active{transform:scale(.985);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-primary{background:var(--lime-400);color:var(--ink-900);}
.btn-primary:hover{background:var(--ink-900);color:var(--lime-400);}
.btn-outline{background:transparent;border-color:var(--brand-700);color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-700);color:var(--white);}
.btn-light{background:var(--white);color:var(--brand-700);}
.btn-light:hover{background:var(--lime-400);color:var(--ink-900);}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.7);color:var(--white);}
.btn-ghost-light:hover{background:var(--white);color:var(--brand-700);border-color:var(--white);}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;color:var(--brand-700);border-bottom:2px solid var(--line);padding-bottom:3px;transition:border-color .24s var(--ease);}
.link-more:hover{border-color:var(--lime-400);}

/* ---------- 标签 / 徽章 ---------- */
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);font-size:12px;font-weight:700;letter-spacing:.06em;background:var(--sand-100);color:var(--text-muted);}
.badge-main{background:var(--brand-700);color:var(--white);}
.badge-lime{background:var(--lime-400);color:var(--ink-900);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 页头 ---------- */
.page-hero{position:relative;color:var(--white);padding:64px 0 56px;background:var(--brand-700);}
.page-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.42;}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,26,22,.9) 0%,rgba(18,59,51,.72) 48%,rgba(18,59,51,.35) 100%);}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:22px;}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:var(--lime-400);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:var(--lime-400);font-weight:600;}
.eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--lime-400);margin-bottom:14px;}
.page-hero h1{font-size:clamp(32px,4.4vw,56px);color:var(--white);max-width:15em;}
.page-hero .hero-lead{margin-top:18px;max-width:640px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.86);}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-meta .badge{background:rgba(255,255,255,.12);color:var(--white);border:1px solid rgba(255,255,255,.22);}
.hero-meta .badge-accent{background:var(--lime-400);color:var(--ink-900);border-color:var(--lime-400);}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--sand-100);}
.section-head{margin-bottom:40px;}
.section-head h2{font-size:clamp(26px,3vw,38px);margin-top:10px;}
.section-head p{margin-top:14px;max-width:660px;color:var(--text-muted);font-size:16px;}
.section-head .head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- 编号时间轴 ---------- */
.timeline{position:relative;padding-left:8px;}
.timeline::before{content:"";position:absolute;left:27px;top:12px;bottom:12px;width:2px;background:linear-gradient(180deg,var(--brand-700),rgba(18,59,51,.12));}
.step{position:relative;display:grid;grid-template-columns:56px 1fr;gap:20px;padding:0 0 32px;}
.step:last-child{padding-bottom:0;}
.step-num{width:56px;height:56px;border-radius:var(--r-pill);background:var(--white);border:1.5px solid var(--brand-700);color:var(--brand-700);display:grid;place-items:center;font-size:17px;font-weight:800;position:relative;z-index:2;}
.step.is-key .step-num{background:var(--brand-700);color:var(--lime-400);border-color:var(--brand-700);}
.step-body{background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);padding:22px 24px;transition:transform .18s var(--ease),box-shadow .18s var(--ease);}
.step-body:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.step-body h3{font-size:20px;margin-bottom:8px;}
.step-body p{color:var(--text-muted);font-size:15.5px;}
.step-note{margin-top:12px;padding-left:16px;position:relative;font-size:14.5px;color:var(--brand-700);font-weight:600;}
.step-note::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:2px;background:var(--lime-400);}

/* ---------- 概述卡 ---------- */
.aside-sticky{position:sticky;top:132px;}
.overview-card{background:var(--ink-900);color:var(--white);border-radius:var(--r-lg);padding:28px;border:1px solid rgba(199,240,60,.28);box-shadow:var(--sh-2);}
.overview-card h3{color:var(--white);font-size:21px;margin-bottom:6px;}
.overview-card .ov-sub{color:rgba(255,255,255,.68);font-size:14px;margin-bottom:20px;}
.ov-list li{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.12);font-size:14.5px;}
.ov-list li:last-child{border-bottom:0;}
.ov-list .k{color:rgba(255,255,255,.6);flex:0 0 auto;}
.ov-list .v{text-align:right;font-weight:600;color:var(--white);}
.overview-card .btn{width:100%;margin-top:20px;}
.overview-card .ov-foot{margin-top:14px;font-size:13px;color:rgba(255,255,255,.6);text-align:center;}

/* ---------- FAQ 手风琴 ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;background:transparent;border:0;font-size:17px;font-weight:600;color:var(--text);text-align:left;cursor:pointer;transition:color .2s var(--ease);}
.faq-q:hover{color:var(--brand-700);}
.faq-icon{position:relative;width:22px;height:22px;flex:0 0 22px;transition:transform .24s var(--ease);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-700);border-radius:2px;}
.faq-icon::before{left:0;right:0;top:50%;height:2px;transform:translateY(-50%);}
.faq-icon::after{top:0;bottom:0;left:50%;width:2px;transform:translateX(-50%);transition:opacity .24s var(--ease);}
.faq-item.is-open .faq-icon{transform:rotate(90deg);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{display:none;background:var(--sand-100);border-radius:12px;padding:20px;margin:0 0 22px;color:var(--text-muted);font-size:15.5px;line-height:1.85;}
.faq-item.is-open .faq-a{display:block;}

/* ---------- 场景卡 ---------- */
.scene-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);padding:26px;}
.scene-card h3{font-size:19px;margin-bottom:14px;}
.scene-card li{display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--text-muted);}
.scene-card li:last-child{border-bottom:0;}
.scene-card li strong{color:var(--text);font-weight:700;flex:0 0 auto;}
.dot{width:8px;height:8px;border-radius:50%;background:var(--lime-400);flex:0 0 8px;margin-top:.62em;}

/* ---------- 示例列表 ---------- */
.example-list{display:grid;gap:20px;}
.example-card{display:grid;grid-template-columns:220px 1fr;gap:24px;background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:transform .18s var(--ease),box-shadow .18s var(--ease);}
.example-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.example-media{position:relative;background:var(--brand-700);min-height:170px;}
.example-media img{width:100%;height:100%;object-fit:cover;}
.example-body{padding:24px 26px 24px 0;}
.example-body h3{font-size:21px;margin:10px 0 10px;}
.example-body h3 a{color:var(--text);}
.example-body h3 a:hover{color:var(--brand-700);}
.example-body p{color:var(--text-muted);font-size:15.5px;}
.example-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:16px;font-size:13.5px;color:var(--text-muted);}
.example-meta .arrow{color:var(--brand-700);font-weight:700;}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink-900);color:var(--white);padding:80px 0;position:relative;overflow:hidden;}
.cta-band::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.045) 0 2px,transparent 2px 14px);}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{color:var(--white);font-size:clamp(26px,3vw,38px);max-width:16em;}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.74);max-width:560px;font-size:16px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.78);padding:64px 0 40px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;}
.site-footer .brand{color:var(--white);margin-bottom:16px;}
.site-footer .brand-mark{background:var(--lime-400);color:var(--ink-900);}
.site-footer .brand-text{color:var(--white);}
.footer-brand p{color:rgba(255,255,255,.6);line-height:1.85;max-width:34em;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--white);margin-bottom:16px;letter-spacing:.02em;}
.footer-col li{margin-bottom:10px;color:rgba(255,255,255,.62);}
.footer-col a{color:rgba(255,255,255,.78);}
.footer-col a:hover{color:var(--lime-400);}
.footer-bottom{margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);}
.to-top{color:rgba(255,255,255,.75);}
.to-top:hover{color:var(--lime-400);}

/* ---------- 底部转化条 ---------- */
.convert-bar{position:fixed;left:0;right:0;bottom:0;z-index:70;background:var(--white);border-top:1px solid var(--line);box-shadow:var(--sh-2);transform:translateY(110%);transition:transform .24s var(--ease);padding-bottom:env(safe-area-inset-bottom);}
.convert-bar.is-visible{transform:translateY(0);}
.convert-inner{min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:8px;padding-bottom:8px;}
.convert-text{font-size:15px;color:var(--text);font-weight:600;}
.convert-actions{display:flex;gap:10px;align-items:center;}

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

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

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  body{padding-bottom:64px;}
  .site-search{min-width:180px;}
  .aside-sticky{position:static;margin-top:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:64px 0;}
  .page-hero{padding:48px 0 44px;}
}
@media (max-width:767px){
  .topbar-inner{height:56px;}
  .brand-text{font-size:15px;}
  .site-search{display:none;}
  .channelbar-inner{height:46px;gap:20px;}
  .channel{line-height:46px;font-size:14px;}
  .example-card{grid-template-columns:1fr;}
  .example-media{min-height:190px;}
  .example-body{padding:20px 22px 24px;}
  .step{grid-template-columns:44px 1fr;gap:14px;}
  .step-num{width:44px;height:44px;font-size:15px;}
  .timeline::before{left:21px;}
  .section{padding:56px 0;}
  .cta-band{padding:56px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:519px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-q{font-size:16px;padding:18px 0;}
  .convert-inner{flex-direction:column;align-items:stretch;gap:10px;padding-top:12px;padding-bottom:10px;text-align:center;}
  .convert-actions{justify-content:center;flex-wrap:wrap;}
  .btn{padding:0 18px;}
  .section{padding:48px 0;}
}