/* roulang page: index */
:root{
  --bg:#0C1613;
  --bg2:#12201C;
  --bg3:#0A120F;
  --light:#F5F7F4;
  --light-card:#FAFBF9;
  --primary:#17B890;
  --primary-d:#0E8F6E;
  --primary-l:#6FE3C2;
  --accent:#F5A524;
  --text:#EAF2EE;
  --text2:#A9BDB5;
  --text3:#7A8F88;
  --line:#1F2F2A;
  --line-2:#E1E7E3;
  --ink:#141C19;
  --ink2:#55635D;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow:0 6px 24px rgba(0,0,0,.35);
  --sec:96px;
  --container:1200px;
  --ease:.18s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  overflow-x:hidden;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
button{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding-left:1.15em}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:var(--sec) 0;position:relative}
.section--alt{background:var(--bg2)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head--row{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:28px}
.section-title{position:relative;font-size:clamp(24px,2.4vw,30px);font-weight:600;line-height:1.35;padding-left:16px}
.section-title::before{content:"";position:absolute;left:0;top:.34em;width:3px;height:18px;background:var(--primary);border-radius:2px}
.section-lead{margin-top:14px;color:var(--text2);font-size:15px;max-width:62ch}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(12,22,19,.94);
  border-bottom-color:var(--line);
  box-shadow:0 10px 28px rgba(0,0,0,.4);
}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 32px;height:68px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--text);letter-spacing:.01em}
.brand:hover{color:var(--primary-l)}
.brand-mark{width:30px;height:30px;flex:0 0 30px}
.nav-right{display:flex;align-items:center;gap:16px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:9px 14px;border-radius:10px;color:var(--text2);font-size:15px;font-weight:500}
.nav-link:hover{color:var(--primary-l)}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--primary);border-radius:2px}
.nav-cta{display:inline-flex}
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:10px;color:var(--text);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary-l)}
.nav-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:90}
.nav-mask.is-open{opacity:1;visibility:visible}
body.nav-locked{overflow:hidden}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--primary);color:#08201A;box-shadow:0 0 22px rgba(23,184,144,.2)}
.btn--primary:hover{background:#1AC99D;transform:translateY(-2px);box-shadow:0 10px 26px rgba(23,184,144,.3)}
.btn--primary:active{transform:translateY(1px)}
.btn--outline{background:transparent;border-color:var(--primary);color:var(--primary-l)}
.btn--outline:hover{background:rgba(23,184,144,.12);transform:translateY(-2px)}
.btn--outline:active{transform:translateY(1px)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--text2)}
.btn--ghost:hover{border-color:var(--primary);color:var(--text);transform:translateY(-2px)}
.btn--sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn[disabled],.btn.is-disabled{opacity:.4;filter:saturate(.4);cursor:not-allowed;transform:none}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;min-height:620px;display:flex;align-items:center;padding:72px 0 88px}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:.32;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    repeating-linear-gradient(45deg,rgba(23,184,144,.05) 0 1px,transparent 1px 14px),
    linear-gradient(135deg,rgba(12,22,19,.96) 0%,rgba(12,22,19,.9) 52%,rgba(10,18,15,.86) 100%);
}
.hero-grid{
  position:relative;z-index:2;display:grid;grid-template-columns:5.5fr 6.5fr;
  gap:48px;align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--primary-l);background:rgba(23,184,144,.12);
  border:1px solid rgba(23,184,144,.28);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:20px;
}
.hero-title{font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.25;margin-bottom:18px}
.hero-sub{font-size:clamp(15px,1.4vw,17px);color:var(--text2);max-width:34em;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:42px}
.hero-stats{display:flex;align-items:stretch}
.stat{padding:0 26px}
.stat:first-child{padding-left:0}
.stat + .stat{border-left:1px solid var(--line)}
.stat-num{font-size:28px;font-weight:700;color:var(--primary);line-height:1.3;font-variant-numeric:tabular-nums}
.stat-label{font-size:13px;color:var(--text3);line-height:1.5}
.hero-visual{position:relative}
.hero-shot{
  border-radius:20px;overflow:hidden;aspect-ratio:16/10;
  border:1px solid rgba(23,184,144,.35);
  box-shadow:0 26px 60px rgba(0,0,0,.5),0 0 64px rgba(23,184,144,.16);
  background:var(--bg2);
}
.hero-shot img{width:100%;height:100%;object-fit:cover}
.hero-countdown{
  margin-top:20px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  background:rgba(18,32,28,.92);border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px 20px;
}
.cd-label{font-size:14px;color:var(--text2)}
.cd-timer{display:flex;align-items:baseline;gap:14px}
.cd-unit{display:flex;align-items:baseline;gap:4px}
.cd-unit b{font-size:22px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}
.cd-unit i{font-style:normal;font-size:12px;color:var(--text3)}

/* ============ 功能价值卡 ============ */
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.value-card{
  position:relative;background:var(--bg2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.value-card:hover{border-color:rgba(23,184,144,.4);box-shadow:var(--shadow);transform:translateY(-2px)}
.value-card--wide{grid-column:span 2;border-left:3px solid var(--primary)}
.value-icon{
  width:40px;height:40px;border-radius:12px;background:rgba(23,184,144,.12);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--primary);
}
.value-card h3{font-size:19px;font-weight:600;line-height:1.5;margin-bottom:10px}
.value-card p{font-size:15px;color:var(--text2);line-height:1.75}

/* ============ 截图轮播 ============ */
.shot-arrows{display:flex;gap:12px}
.shot-nav{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  background:transparent;color:var(--text2);display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.shot-nav:hover{background:var(--primary);border-color:var(--primary);color:#08201A}
.shot-track{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 0 22px;scrollbar-width:none;-ms-overflow-style:none;
}
.shot-track::-webkit-scrollbar{display:none}
.shot-card{flex:0 0 min(78%,520px);scroll-snap-align:start}
.shot-thumb{
  aspect-ratio:16/10;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  background:var(--bg2);margin-bottom:18px;transition:border-color var(--ease),box-shadow var(--ease);
}
.shot-card:hover .shot-thumb{border-color:rgba(23,184,144,.4);box-shadow:var(--shadow)}
.shot-thumb img{width:100%;height:100%;object-fit:cover}
.shot-card h3{font-size:19px;font-weight:600;margin-bottom:6px}
.shot-card p{font-size:14px;color:var(--text2)}
.shot-dots{display:flex;gap:10px;align-items:center;margin-top:8px}
.shot-dot{
  width:10px;height:10px;border-radius:var(--r-pill);border:0;background:var(--line);
  cursor:pointer;padding:0;transition:width var(--ease),background var(--ease);
}
.shot-dot.is-active{width:24px;background:var(--primary)}

/* ============ 系统要求（浅色区块） ============ */
.section--light{background:var(--light);color:var(--ink)}
.section--light .section-title{color:var(--ink)}
.section--light .section-lead{color:var(--ink2)}
.req-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.req-card{
  background:var(--light-card);border:1px solid var(--line-2);border-radius:var(--r-card);padding:26px 24px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.req-card:hover{border-color:var(--primary);box-shadow:0 8px 26px rgba(20,28,25,.1)}
.req-card h3{font-size:19px;font-weight:600;color:var(--ink);margin-bottom:14px}
.req-list{margin:0}
.req-row{display:grid;grid-template-columns:130px 1fr;gap:16px;padding:12px 0;border-top:1px solid var(--line-2)}
.req-row:first-child{border-top:0}
.req-row dt{font-size:14px;color:var(--ink2);line-height:1.6}
.req-row dd{margin:0;font-size:16px;color:var(--ink);line-height:1.6}

/* ============ 评价墙 ============ */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.review-card{
  position:relative;background:var(--bg2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:34px 24px 24px;transition:border-color var(--ease),box-shadow var(--ease);
}
.review-card:hover{border-color:rgba(23,184,144,.4);box-shadow:var(--shadow)}
.review-card:nth-child(2){margin-top:24px}
.review-card:nth-child(3){margin-top:48px}
.review-card::before{
  content:"“";position:absolute;left:16px;top:0;font-size:64px;line-height:1;
  color:rgba(23,184,144,.14);font-weight:700;
}
.review-stars{color:var(--accent);font-size:15px;letter-spacing:3px;margin-bottom:14px}
.review-text{font-size:15px;color:var(--text2);line-height:1.8;margin-bottom:18px}
.review-user{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text3)}
.review-user b{color:var(--text);font-weight:600;font-size:14px}
.tag{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;background:rgba(23,184,144,.14);color:var(--primary-l);border:1px solid rgba(23,184,144,.25);
}

/* ============ 下载区 ============ */
.download-panel{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:20px;
  background-color:var(--bg2);padding:52px 44px;
}
.download-panel::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;opacity:.14;
}
.download-inner{position:relative;z-index:2}
.download-inner h2{font-size:clamp(23px,2.3vw,28px);font-weight:600;margin-bottom:12px}
.download-inner > p{color:var(--text2);font-size:15px;max-width:58ch;margin-bottom:32px}
.download-actions{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:18px}
.dl-btn{
  display:inline-flex;align-items:center;gap:12px;height:56px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.dl-btn:hover{transform:translateY(-2px)}
.dl-btn:active{transform:translateY(1px)}
.dl-btn--main{background:var(--primary);color:#08201A;box-shadow:0 0 26px rgba(23,184,144,.22)}
.dl-btn--main:hover{background:#1AC99D;box-shadow:0 10px 28px rgba(23,184,144,.3)}
.dl-btn--outline{border-color:var(--primary);color:var(--primary-l);background:rgba(23,184,144,.06)}
.dl-btn--outline:hover{background:rgba(23,184,144,.14)}
.dl-btn--ghost{border-color:var(--line);color:var(--text2);background:transparent}
.dl-btn--ghost:hover{border-color:var(--primary);color:var(--text)}
.dl-badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:500;background:rgba(255,255,255,.18);color:inherit;
}
.dl-btn--outline .dl-badge,.dl-btn--ghost .dl-badge{background:rgba(23,184,144,.14);color:var(--primary-l)}
.download-note{font-size:13px;color:var(--text3);line-height:1.7}

/* ============ 最新信息 ============ */
.head-link{font-size:14px;color:var(--primary-l);white-space:nowrap;display:inline-flex;align-items:center;gap:6px}
.head-link:hover{color:var(--primary)}
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.news-card{
  background:var(--bg2);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.news-card:hover{border-color:rgba(23,184,144,.4);box-shadow:var(--shadow);transform:translateY(-3px)}
.news-link{display:block;height:100%}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg3)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-pill{
  position:absolute;top:10px;right:10px;background:rgba(23,184,144,.9);color:#062019;
  font-size:12px;line-height:1;padding:6px 10px;border-radius:var(--r-pill);
}
.news-body{padding:18px}
.news-title{
  font-size:17px;font-weight:600;line-height:1.5;margin-bottom:10px;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-title{color:var(--primary-l)}
.news-sum{
  font-size:14px;color:var(--text2);line-height:1.7;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text3)}
.news-date{display:inline-flex;align-items:center;gap:6px}
.news-arrow{transition:transform var(--ease);color:var(--text3)}
.news-card:hover .news-arrow{transform:translateX(4px);color:var(--primary)}
.empty-state{
  height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--bg2);color:var(--text3);
}
.empty-state svg{color:var(--text3)}
.empty-state p{font-size:14px;line-height:1.7}
.empty-state a{font-size:14px;color:var(--primary-l)}
.empty-state a:hover{color:var(--primary)}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{background:var(--bg2);border:1px solid var(--line);border-radius:var(--r-btn);overflow:hidden;transition:border-color var(--ease)}
.faq-item[open]{border-color:rgba(23,184,144,.4)}
.faq-item summary{
  position:relative;cursor:pointer;list-style:none;padding:18px 54px 18px 22px;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:var(--primary);
  border-radius:0 2px 2px 0;opacity:0;transition:opacity var(--ease);
}
.faq-item[open] summary::before{opacity:1}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:50%;width:12px;height:12px;margin-top:-8px;
  border-right:2px solid var(--text3);border-bottom:2px solid var(--text3);
  transform:rotate(45deg);transition:transform var(--ease),border-color var(--ease);
}
.faq-item[open] summary::after{transform:rotate(225deg);border-color:var(--primary)}
.faq-item summary:hover{color:var(--primary-l)}
.faq-answer{padding:0 22px 20px;font-size:15px;color:var(--text2);line-height:1.8;max-width:70ch}

/* ============ 底部 CTA ============ */
.cta-band{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:56px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(22px,2.2vw,27px);font-weight:600;margin-bottom:10px}
.cta-inner p{color:var(--text2);font-size:15px;max-width:56ch}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg3);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;margin-bottom:16px}
.footer-desc{font-size:14px;color:var(--text2);line-height:1.8;max-width:36ch;margin-bottom:20px}
.footer-social{display:flex;gap:12px}
.footer-social a{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--text2);
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.footer-social a:hover{border-color:var(--primary);color:var(--primary-l);background:rgba(23,184,144,.1)}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text2)}
.footer-col a:hover{color:var(--primary-l)}
.footer-col p{font-size:14px;color:var(--text2);line-height:1.8}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;text-align:center;
  font-size:13px;color:var(--text3);line-height:1.7;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav-links{
    position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);
    background:var(--bg2);border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:88px 24px 32px;gap:6px;transform:translateX(100%);
    transition:transform .3s ease;z-index:95;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{padding:12px 14px;font-size:16px}
  .nav-link.is-active::after{left:14px;right:auto;width:28px;bottom:6px}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero{min-height:auto;padding:56px 0 72px}
  .value-grid{grid-template-columns:repeat(2,1fr)}
  .value-card--wide{grid-column:span 2}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:1fr;gap:20px}
  .review-card:nth-child(2),.review-card:nth-child(3){margin-top:0}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:20px}
  .req-grid{grid-template-columns:1fr}
  .shot-nav{display:none}
  .shot-card{flex:0 0 86%}
  .download-panel{padding:36px 22px}
  .cta-band{padding:44px 0}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:22px}
}
@media (max-width:560px){
  .container{padding:0 18px}
  body{font-size:15px}
  .hero-title{font-size:clamp(26px,7vw,32px)}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-stats{flex-direction:column;gap:16px}
  .stat{padding:0}
  .stat + .stat{border-left:0;border-top:1px solid var(--line);padding-top:16px}
  .value-grid{grid-template-columns:1fr}
  .value-card--wide{grid-column:span 1}
  .news-grid{grid-template-columns:1fr}
  .download-actions{flex-direction:column}
  .dl-btn{width:100%;justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .req-row{grid-template-columns:1fr;gap:4px}
}
@media (max-width:420px){
  .container{padding:0 16px}
}

/* roulang page: article */
:root{
  --bg:#0C1613;
  --bg-soft:#12201C;
  --bg-deep:#0A120F;
  --light:#F5F7F4;
  --primary:#17B890;
  --primary-deep:#0E8F6E;
  --primary-soft:#6FE3C2;
  --accent:#F5A524;
  --danger:#E5484D;
  --text:#EAF2EE;
  --text-2:#A9BDB5;
  --text-3:#7A8F88;
  --text-dark:#141C19;
  --text-dark-2:#55635D;
  --border:#1F2F2A;
  --border-light:#E1E7E3;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --r-img:12px;
  --r-img-lg:20px;
  --shadow-hover:0 6px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 6px rgba(23,184,144,.18);
  --wrap:1200px;
  --t:.18s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
svg{display:block}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding-left:1.25em}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:rgba(23,184,144,.35);color:var(--text)}
.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--tight{padding-top:56px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-title{position:relative;padding-left:14px;font-size:28px;font-weight:600;line-height:1.35;letter-spacing:0}
.section-title::before{content:"";position:absolute;left:0;top:.32em;width:3px;height:18px;border-radius:2px;background:var(--primary)}
.section-lead{margin-top:10px;max-width:640px;font-size:15px;line-height:1.8;color:var(--text-2)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary-soft)}
.text-link:hover{color:var(--primary)}
.text-link svg{transition:transform var(--t)}
.text-link:hover svg{transform:translateX(4px)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;height:48px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;transition:transform var(--t),background var(--t),color var(--t),border-color var(--t),box-shadow var(--t)}
.btn--primary{background:var(--primary);color:#06231B;box-shadow:0 0 0 0 rgba(23,184,144,0)}
.btn--primary:hover{background:#1FCB9E;transform:translateY(-2px);box-shadow:0 10px 26px rgba(23,184,144,.32)}
.btn--primary:active{transform:translateY(0)}
.btn--outline{background:transparent;border-color:rgba(23,184,144,.45);color:var(--primary-soft)}
.btn--outline:hover{background:rgba(23,184,144,.1);border-color:var(--primary);transform:translateY(-2px)}
.btn--outline:active{transform:translateY(0)}
.btn--ghost{background:transparent;border-color:var(--border);color:var(--text-2)}
.btn--ghost:hover{border-color:rgba(169,189,181,.4);color:var(--text);transform:translateY(-2px)}
.btn--ghost:active{transform:translateY(0)}
.btn--sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn--wide{min-width:220px;height:56px}
.btn[disabled],.btn.is-disabled{filter:saturate(40%);cursor:not-allowed;transform:none;box-shadow:none}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-pill);background:rgba(23,184,144,.14);color:var(--primary-soft);font-size:12px;line-height:1;letter-spacing:.02em}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);border:1px solid var(--border);background:var(--bg-soft);color:var(--text-2);font-size:13px;transition:border-color var(--t),color var(--t)}
.tag:hover{border-color:rgba(23,184,144,.45);color:var(--primary-soft)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:80;background:rgba(12,22,19,.55);border-bottom:1px solid transparent;transition:background .25s ease,border-color .25s ease,box-shadow .25s ease}
.site-header.is-scrolled{background:rgba(12,22,19,.92);border-bottom-color:var(--border);box-shadow:0 10px 30px rgba(0,0,0,.34)}
.nav-inner{max-width:var(--wrap);margin:0 auto;padding:0 32px;height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text);letter-spacing:0}
.brand:hover{color:var(--primary-soft)}
.brand-mark{width:30px;height:30px;flex:none}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:10px 12px;border-radius:var(--r-btn);font-size:15px;color:var(--text-2);transition:color var(--t)}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:50% 50%;transition:transform .2s ease}
.nav-link:hover{color:var(--text)}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:var(--bg-soft);color:var(--text-2);cursor:pointer;transition:color var(--t),border-color var(--t)}
.nav-toggle:hover{color:var(--primary-soft);border-color:rgba(23,184,144,.45)}

/* 面包屑 */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:20px 0;font-size:13px;color:var(--text-2)}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary-soft)}
.breadcrumb .sep{color:var(--text-3)}
.breadcrumb .crumb-current{max-width:min(46vw,420px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)}

/* 文章头部 */
.article-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--border);background:linear-gradient(180deg,rgba(12,22,19,.2),rgba(12,22,19,1))}
.article-hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.16}
.article-hero-bg img{width:100%;height:100%;object-fit:cover}
.article-hero::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(115deg,rgba(12,22,19,.94) 0%,rgba(12,22,19,.82) 55%,rgba(18,32,28,.9) 100%)}
.article-hero .container{position:relative;z-index:2}
.article-head{padding:16px 0 44px;max-width:860px}
.article-title{font-size:clamp(30px,4vw,40px);font-weight:700;line-height:1.3;letter-spacing:0;color:var(--text)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:20px;font-size:13px;color:var(--text-2)}
.meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-item svg{color:var(--primary)}
.divider{height:1px;background:var(--border);border:0;margin:0}
.article-hero .divider{margin-top:26px}

/* 正文 */
.article-main{padding:56px 0 8px}
.article-body{max-width:780px;margin:0 auto;font-size:17px;line-height:1.85;color:var(--text)}
.article-body > *{max-width:100%}
.article-body > * + *{margin-top:1.1em}
.article-body h2{position:relative;padding-left:14px;margin-top:2em;font-size:26px;font-weight:600;line-height:1.4;color:var(--text)}
.article-body h2::before{content:"";position:absolute;left:0;top:.34em;width:3px;height:18px;border-radius:2px;background:var(--primary)}
.article-body h3{margin-top:1.7em;font-size:20px;font-weight:600;line-height:1.5;color:var(--text)}
.article-body h4{margin-top:1.5em;font-size:17px;font-weight:600;color:var(--text)}
.article-body p{color:var(--text-2)}
.article-body strong{color:var(--text)}
.article-body a{color:var(--primary-soft);border-bottom:1px solid rgba(111,227,194,.35)}
.article-body a:hover{color:var(--primary);border-bottom-color:var(--primary)}
.article-body ul,.article-body ol{padding-left:1.3em;color:var(--text-2)}
.article-body li{line-height:1.75}
.article-body li + li{margin-top:.4em}
.article-body li::marker{color:var(--primary)}
.article-body blockquote{margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--primary);border-radius:0 var(--r-img) var(--r-img) 0;background:var(--bg-soft);color:var(--text-2)}
.article-body blockquote p{color:var(--text-2);margin:0}
.article-body img{border-radius:var(--r-img);margin:1.6em auto;height:auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--text-3)}
.article-body code{padding:2px 6px;border-radius:6px;background:var(--bg-deep);border:1px solid var(--border);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;font-size:14px;color:var(--primary-soft)}
.article-body pre{margin:1.6em 0;padding:18px 20px;border-radius:var(--r-img);background:var(--bg-deep);border:1px solid var(--border);overflow-x:auto}
.article-body pre code{padding:0;border:0;background:none;color:var(--text-2);font-size:14px;line-height:1.7}
.article-body table{width:100%;margin:1.6em 0;border-collapse:collapse;border:1px solid var(--border);border-radius:var(--r-img);overflow:hidden;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--border);text-align:left;color:var(--text-2)}
.article-body th{background:var(--bg-soft);color:var(--text);font-weight:600}
.article-body tr:last-child td{border-bottom:0}
.article-body hr{height:1px;border:0;background:var(--border);margin:2em 0}

/* 空态 */
.empty-state{max-width:780px;margin:0 auto;min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:36px 24px;border:1px dashed var(--border);border-radius:var(--r-card);background:var(--bg-soft);text-align:center}
.empty-state svg{color:var(--text-3)}
.empty-state p{font-size:14px;color:var(--text-2)}

/* 文章尾部 */
.article-foot{max-width:780px;margin:0 auto;padding:34px 0 0}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;padding-bottom:28px;border-bottom:1px solid var(--border)}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:34px}
.post-nav-card{display:flex;flex-direction:column;gap:8px;padding:22px;border:1px solid var(--border);border-radius:var(--r-card);background:var(--bg-soft);transition:border-color var(--t),box-shadow var(--t),transform var(--t)}
.post-nav-card:hover{border-color:rgba(23,184,144,.4);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.post-nav-card--next{text-align:right;align-items:flex-end}
.post-nav-label{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2)}
.post-nav-card--next .post-nav-label svg{order:2}
.post-nav-card strong{font-size:16px;font-weight:600;line-height:1.5;color:var(--text)}
.post-nav-card:hover strong{color:var(--primary-soft)}
.post-nav-desc{font-size:13px;line-height:1.7;color:var(--text-3)}
.back-entry{margin-top:26px;font-size:14px;color:var(--text-2)}
.back-entry a{color:var(--primary-soft)}
.back-entry a:hover{color:var(--primary)}

/* 卡片 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{display:flex;flex-direction:column;border:1px solid var(--border);border-radius:var(--r-card);background:var(--bg-soft);overflow:hidden;transition:border-color var(--t),box-shadow var(--t),transform var(--t)}
.post-card:hover{border-color:rgba(23,184,144,.4);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-deep)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.post-card:hover .post-thumb img{transform:scale(1.05)}
.post-pill{position:absolute;top:12px;right:12px;display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:rgba(23,184,144,.9);color:#06231B;font-size:12px;line-height:1}
.post-body{display:flex;flex-direction:column;flex:1;padding:20px 22px 22px}
.post-body h3{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:17px;font-weight:600;line-height:1.5;color:var(--text);transition:color var(--t)}
.post-card:hover .post-body h3{color:var(--primary-soft)}
.post-excerpt{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:10px;font-size:14px;line-height:1.75;color:var(--text-2)}
.post-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:16px;font-size:13px;color:var(--text-3)}
.post-meta .date{display:inline-flex;align-items:center;gap:6px}
.post-meta .arrow{color:var(--primary);transition:transform var(--t)}
.post-card:hover .post-meta .arrow{transform:translateX(4px)}

/* CTA */
.cta-band{position:relative;overflow:hidden;margin-top:8px;border-top:1px solid var(--border);background:var(--bg-soft)}
.cta-band-bg{position:absolute;inset:0;opacity:.14;pointer-events:none}
.cta-band-bg img{width:100%;height:100%;object-fit:cover}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,18,15,.95) 0%,rgba(18,32,28,.86) 60%,rgba(10,18,15,.94) 100%)}
.cta-band-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:56px 32px}
.cta-band h2{font-size:26px;font-weight:600;line-height:1.4;color:var(--text)}
.cta-band p{margin-top:10px;max-width:560px;font-size:15px;line-height:1.8;color:var(--text-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* 页脚 */
.site-footer{margin-top:0;background:var(--bg-deep);border-top:1px solid var(--border)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 44px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text)}
.footer-desc{margin-top:16px;max-width:420px;font-size:14px;line-height:1.8;color:var(--text-2)}
.footer-social{display:flex;gap:12px;margin-top:20px}
.footer-social a{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;border:1px solid var(--border);color:var(--text-2);transition:color var(--t),border-color var(--t),transform var(--t)}
.footer-social a:hover{color:var(--primary-soft);border-color:rgba(23,184,144,.45);transform:translateY(-2px)}
.footer-col h3{margin-bottom:16px;font-size:15px;font-weight:600;color:var(--text)}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li + li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary-soft)}
.footer-bottom{padding:22px 0;border-top:1px solid var(--border);text-align:center;font-size:13px;line-height:1.8;color:var(--text-3)}

@media (max-width:1280px){
  .container{padding:0 28px}
  .nav-inner{padding:0 28px}
  .cta-band-inner{padding:52px 28px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .container{padding:0 24px}
  .nav-inner{padding:0 24px}
  .nav-toggle{display:inline-flex}
  .nav-links{position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);display:flex;flex-direction:column;align-items:stretch;gap:0;padding:84px 22px 32px;background:#0C1613;border-left:1px solid var(--border);transform:translateX(102%);transition:transform .28s ease;z-index:90;overflow-y:auto}
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{padding:14px 2px;font-size:16px;color:var(--text);border-bottom:1px solid var(--border);border-radius:0}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--primary)}
  .nav-toggle{position:relative;z-index:100}
  .site-header.is-open::after{content:"";position:fixed;top:68px;left:0;right:0;bottom:0;background:rgba(0,0,0,.6);z-index:85}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px}
  .cta-band-inner{flex-direction:column;align-items:flex-start;padding:48px 24px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .section-title{font-size:24px}
  .article-main{padding:40px 0 0}
  .article-body{font-size:16px}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .post-nav{grid-template-columns:1fr}
  .post-nav-card--next{text-align:left;align-items:flex-start}
  .post-nav-card--next .post-nav-label svg{order:0}
  .article-head{padding:10px 0 34px}
  .meta-row{gap:8px 18px}
  .cta-band h2{font-size:22px}
}
@media (max-width:560px){
  .container{padding:0 18px}
  .nav-inner{padding:0 18px;gap:10px}
  .brand{font-size:15px;gap:8px}
  .brand-mark{width:26px;height:26px}
  .nav-cta{height:34px;padding:0 12px;font-size:13px}
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .btn--wide{width:100%;min-width:0}
  .breadcrumb .crumb-current{max-width:100%}
}
@media (max-width:420px){
  .container{padding:0 16px}
  .nav-inner{padding:0 16px}
  .brand{font-size:14px}
  .article-title{font-size:26px}
}

/* roulang page: category1 */
:root{
  --bg:#0C1613;
  --bg-2:#12201C;
  --bg-deep:#0A120F;
  --bg-light:#F5F7F4;
  --primary:#17B890;
  --primary-dark:#0E8F6E;
  --primary-light:#6FE3C2;
  --accent:#F5A524;
  --text:#EAF2EE;
  --text-2:#A9BDB5;
  --text-3:#7A8F88;
  --border:#1F2F2A;
  --border-light:#E1E7E3;
  --danger:#E5484D;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-pill:999px;
  --shadow-card:0 6px 24px rgba(0,0,0,.35);
  --container:1200px;
  --pad:32px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",Inter,"Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;height:auto;}
a{color:var(--primary-light);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-light);}
button{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:52px;
  padding:0 24px;
  border-radius:var(--radius-md);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn svg{flex:none;}
.btn--primary{
  background:var(--primary);
  color:#06231B;
  box-shadow:0 0 0 4px rgba(23,184,144,.18);
}
.btn--primary:hover{
  color:#06231B;
  transform:translateY(-2px);
  filter:brightness(1.08);
  box-shadow:0 6px 24px rgba(0,0,0,.35),0 0 0 4px rgba(23,184,144,.24);
}
.btn--primary:active{transform:translateY(-1px);}
.btn--outline{
  border-color:rgba(23,184,144,.55);
  color:var(--primary-light);
  background:transparent;
}
.btn--outline:hover{
  color:var(--primary-light);
  transform:translateY(-2px);
  border-color:var(--primary);
  background:rgba(23,184,144,.1);
}
.btn--ghost{
  border-color:var(--border);
  color:var(--text-2);
  background:transparent;
}
.btn--ghost:hover{
  color:var(--text);
  transform:translateY(-2px);
  border-color:rgba(23,184,144,.4);
}
.btn--sm{height:40px;padding:0 16px;font-size:14px;}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(12,22,19,.62);
  border-bottom:1px solid transparent;
  transition:background-color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{
  background:rgba(12,22,19,.94);
  border-bottom-color:var(--border);
  box-shadow:0 6px 24px rgba(0,0,0,.35);
}
.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--pad);
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--text);
  letter-spacing:0;
  white-space:nowrap;
}
.brand:hover{color:var(--text);}
.brand-mark{width:30px;height:30px;flex:none;}
.nav-right{display:flex;align-items:center;gap:22px;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;
  padding:22px 0;
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
}
.nav-link:hover{color:var(--primary-light);}
.nav-link.is-active{color:var(--primary);}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:14px;
  height:2px;
  background:var(--primary);
  border-radius:var(--radius-pill);
}
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  align-items:center;
  justify-content:center;
  border-radius:var(--radius-md);
  border:1px solid var(--border);
  background:var(--bg-2);
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:rgba(23,184,144,.5);color:var(--primary-light);}
.nav-backdrop{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.6);
  opacity:0;
  visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;
  z-index:65;
}
.nav-backdrop.is-open{opacity:1;visibility:visible;}
body.nav-locked{overflow:hidden;}

/* ---------- 页面头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:64px 0 64px;
  border-bottom:1px solid var(--border);
  background-color:#0A1411;
  background-image:
    linear-gradient(115deg,rgba(12,22,19,.95) 0%,rgba(12,22,19,.9) 45%,rgba(12,22,19,.86) 100%),
    url(/assets/images/backpic/back-2.png);
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(45deg,rgba(111,227,194,.05) 1px,transparent 1px),
    linear-gradient(-45deg,rgba(111,227,194,.05) 1px,transparent 1px);
  background-size:34px 34px;
  opacity:.55;
  pointer-events:none;
}
.page-hero-inner{position:relative;z-index:1;max-width:860px;}

.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin:0 0 24px;
}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--primary-light);}
.crumbs .crumb-current{color:var(--text);}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 14px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(23,184,144,.35);
  background:rgba(23,184,144,.12);
  color:var(--primary-light);
  font-size:13px;
  line-height:1.5;
  margin-bottom:20px;
}

.page-hero h1{
  font-size:clamp(30px,4vw,44px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:0;
}
.page-hero-sub{
  margin-top:18px;
  max-width:640px;
  font-size:17px;
  line-height:1.8;
  color:var(--text-2);
}
.page-hero .btn-row{margin-top:30px;}

.hero-stats{
  display:flex;
  flex-wrap:wrap;
  list-style:none;
  margin:38px 0 0;
  padding:0;
}
.hero-stats li{
  padding:0 30px;
  border-left:1px solid var(--border);
}
.hero-stats li:first-child{padding-left:0;border-left:0;}
.stat-num{
  display:block;
  font-size:28px;
  font-weight:700;
  line-height:1.3;
  color:var(--text);
  font-variant-numeric:tabular-nums;
}
.stat-label{
  display:block;
  font-size:13px;
  line-height:1.5;
  color:var(--text-3);
}

/* ---------- 板块 ---------- */
.section{padding:96px 0;}
.section--tight{padding-top:0;}
.section-head{margin-bottom:36px;}
.section-title{
  position:relative;
  padding-left:16px;
  font-size:26px;
  font-weight:600;
  line-height:1.35;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:3px;
  height:18px;
  background:var(--primary);
  border-radius:var(--radius-pill);
}
.section-lead{
  margin:14px 0 0;
  max-width:660px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}

/* ---------- 确认清单 ---------- */
.check-list{
  background:var(--bg-2);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:8px 24px;
}
.check-row{
  display:grid;
  grid-template-columns:200px 1fr;
  gap:24px;
  padding:22px 0;
  border-top:1px solid var(--border);
}
.check-row:first-child{border-top:0;}
.check-key{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  line-height:1.6;
  color:var(--text-3);
}
.check-key svg{flex:none;color:var(--primary);}
.check-val{
  font-size:16px;
  line-height:1.8;
  color:var(--text);
}

/* ---------- 卡片网格 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.card{
  display:flex;
  flex-direction:column;
  background:var(--bg-2);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  color:inherit;
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.card:hover{
  color:inherit;
  border-color:rgba(23,184,144,.4);
  box-shadow:var(--shadow-card);
  transform:translateY(-2px);
}
.card-cover{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#0A120F;
}
.card-cover img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .3s ease;
}
.card:hover .card-cover img{transform:scale(1.03);}
.card-pill{
  position:absolute;
  top:12px;
  right:12px;
  padding:4px 10px;
  border-radius:var(--radius-pill);
  background:rgba(23,184,144,.9);
  color:#06231B;
  font-size:12px;
  font-weight:600;
  line-height:1.5;
}
.card-body{
  flex:1;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:24px;
}
.card-title{
  font-size:19px;
  font-weight:600;
  line-height:1.5;
  color:var(--text);
  transition:color .18s ease;
}
.card:hover .card-title{color:var(--primary);}
.card-text{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--border);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}
.card-foot .card-arrow{
  color:var(--primary);
  transition:transform .18s ease;
}
.card:hover .card-arrow{transform:translateX(4px);}

/* ---------- 步骤 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  list-style:none;
}
.step{
  background:var(--bg-2);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:24px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.step:hover{
  border-color:rgba(23,184,144,.4);
  box-shadow:var(--shadow-card);
}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  margin-bottom:16px;
  border-radius:var(--radius-md);
  background:rgba(23,184,144,.12);
  color:var(--primary);
  font-size:16px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.step h3{
  font-size:19px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:8px;
}
.step p{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
}

/* ---------- FAQ ---------- */
.faq{max-width:900px;}
.faq-item{
  position:relative;
  background:var(--bg-2);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s ease;
}
.faq-item[open]{border-color:rgba(23,184,144,.35);}
.faq-item[open]::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:var(--primary);
}
.faq-item summary{
  position:relative;
  cursor:pointer;
  list-style:none;
  padding:18px 56px 18px 22px;
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  color:var(--text);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";
  position:absolute;
  right:21px;
  top:50%;
  width:12px;
  height:2px;
  background:var(--primary);
  transform:translateY(-50%);
}
.faq-item summary::before{
  content:"";
  position:absolute;
  right:26px;
  top:50%;
  width:2px;
  height:12px;
  background:var(--primary);
  transform:translateY(-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.faq-item[open] summary::before{transform:translateY(-50%) rotate(90deg);opacity:0;}
.faq-item summary:hover{color:var(--primary-light);}
.faq-answer{
  padding:12px 22px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}

/* ---------- CTA 与交叉链接 ---------- */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  padding:36px;
  background:var(--bg-2);
  border:1px solid rgba(23,184,144,.28);
  border-radius:var(--radius-lg);
}
.cta-band h2{
  font-size:26px;
  font-weight:600;
  line-height:1.35;
  margin-bottom:10px;
}
.cta-band p{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  max-width:520px;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

.cross-links{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 20px;
  margin-top:28px;
  font-size:14px;
  color:var(--text-3);
}
.cross-links a{color:var(--text-2);}
.cross-links a:hover{color:var(--primary-light);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--border);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding:64px 0 44px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--text);
}
.footer-desc{
  margin:16px 0 20px;
  max-width:340px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
}
.footer-social{display:flex;gap:12px;}
.footer-social a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:var(--radius-md);
  border:1px solid var(--border);
  color:var(--text-2);
  transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.footer-social a:hover{
  color:var(--primary-light);
  border-color:rgba(23,184,144,.45);
  transform:translateY(-2px);
}
.footer-col h3{
  font-size:15px;
  font-weight:600;
  line-height:1.5;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul{list-style:none;display:grid;gap:10px;}
.footer-col a{
  font-size:14px;
  line-height:1.7;
  color:var(--text-2);
}
.footer-col a:hover{color:var(--primary-light);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  padding:20px 0;
  border-top:1px solid var(--border);
  font-size:13px;
  line-height:1.6;
  color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:fixed;
    top:0;
    right:0;
    z-index:70;
    width:290px;
    height:100%;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:92px 24px 32px;
    background:#0C1613;
    border-left:1px solid var(--border);
    transform:translateX(100%);
    transition:transform .25s ease;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-link{
    width:100%;
    padding:15px 0;
    font-size:16px;
    border-bottom:1px solid var(--border);
  }
  .nav-link.is-active::after{
    left:0;
    right:auto;
    bottom:10px;
    width:100%;
  }
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}

@media (max-width:768px){
  :root{--pad:24px;}
  .section{padding:72px 0;}
  .page-hero{padding:48px 0 52px;}
  .page-hero h1{font-size:clamp(26px,5.2vw,32px);}
  .page-hero-sub{font-size:16px;}
  .section-title{font-size:23px;}
  .hero-stats{margin-top:30px;}
  .hero-stats li{padding:0 20px;margin-bottom:12px;}
  .stat-num{font-size:24px;}
  .check-list{padding:4px 18px;}
  .check-row{grid-template-columns:1fr;gap:8px;padding:18px 0;}
  .cta-band{padding:26px;}
  .cta-band h2{font-size:22px;}
}

@media (max-width:560px){
  :root{--pad:18px;}
  .section{padding:56px 0;}
  .nav-cta{display:none;}
  .brand{font-size:16px;}
  .card-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .btn-row{flex-direction:column;align-items:stretch;}
  .btn-row .btn{width:100%;}
  .hero-stats li{padding:0 16px;}
  .hero-stats li:first-child{padding-left:0;}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 32px;}
  .footer-bottom{justify-content:flex-start;}
  .faq-item summary{font-size:15px;padding:16px 52px 16px 18px;}
  .faq-answer{padding:12px 18px 18px;font-size:14px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
}

@media (max-width:420px){
  :root{--pad:16px;}
  .card-body{padding:18px;}
  .step{padding:20px;}
}

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

/* roulang page: category2 */
:root{
  --bg:#0C1613;
  --bg-2:#12201C;
  --bg-deep:#0A120F;
  --primary:#17B890;
  --primary-dark:#0E8F6E;
  --primary-light:#6FE3C2;
  --amber:#F5A524;
  --text:#EAF2EE;
  --text-2:#A9BDB5;
  --text-3:#7A8F88;
  --border:#1F2F2A;
  --on-primary:#06231B;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow-card:0 6px 24px rgba(0,0,0,.35);
  --container:1200px;
  --ease:.18s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(23,184,144,.35)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--tight{padding:64px 0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;border-radius:var(--r-btn);
  border:1px solid transparent;padding:0 22px;height:48px;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease),filter var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--primary);color:var(--on-primary);box-shadow:0 0 0 6px rgba(23,184,144,.10),0 8px 20px rgba(23,184,144,.18)}
.btn--primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 6px rgba(23,184,144,.14),0 14px 30px rgba(23,184,144,.30)}
.btn--primary:active{transform:translateY(-1px)}
.btn--outline{border-color:rgba(23,184,144,.55);color:var(--primary-light)}
.btn--outline:hover{background:rgba(23,184,144,.12);transform:translateY(-2px);border-color:var(--primary)}
.btn--outline:active{transform:translateY(-1px)}
.btn--ghost{border-color:var(--border);color:var(--text-2)}
.btn--ghost:hover{border-color:rgba(23,184,144,.5);color:var(--primary-light);transform:translateY(-2px)}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--lg{height:56px;padding:0 28px;font-size:16px}
.btn[disabled],.btn.is-disabled{filter:saturate(.4);opacity:.6;cursor:not-allowed;transform:none}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;height:68px;
  background:rgba(12,22,19,.72);border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(12,22,19,.96);
  border-bottom-color:var(--border);
  box-shadow:0 10px 28px rgba(0,0,0,.42);
}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 32px;height:68px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text);flex:none}
.brand:hover{color:var(--primary-light)}
.brand-mark{width:32px;height:32px;flex:none}
.nav-right{display:flex;align-items:center;gap:18px;min-width:0}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;
  font-size:15px;color:var(--text-2);border-radius:8px;
}
.nav-link:hover{color:var(--primary-light)}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-cta{flex:none}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--border);border-radius:10px;
  align-items:center;justify-content:center;color:var(--text);flex:none;
}
.nav-toggle:hover{border-color:rgba(23,184,144,.5);color:var(--primary-light)}
.drawer-cta{display:none}
.nav-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.nav-mask.is-open{opacity:1;visibility:visible}
body.nav-locked{overflow:hidden}

/* ---------- 通用区块头 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-title{position:relative;font-size:clamp(22px,2.4vw,28px);font-weight:600;line-height:1.35;padding-left:16px}
.section-title::before{
  content:"";position:absolute;left:0;top:.3em;width:3px;height:18px;
  background:var(--primary);border-radius:2px;
}
.section-lead{margin-top:10px;color:var(--text-2);font-size:15px;max-width:660px;padding-left:16px}
.more-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.more-link svg{transition:transform var(--ease)}
.more-link:hover{color:var(--primary-light)}
.more-link:hover svg{transform:translateX(4px)}

/* ---------- 页面头 ---------- */
.page-hero{position:relative;overflow:hidden;padding:84px 0 76px}
.page-hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.3;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,22,19,.78) 0%,rgba(12,22,19,.93) 58%,var(--bg) 100%);
}
.page-hero-inner{position:relative;z-index:2;max-width:840px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.breadcrumb .current{color:var(--text)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--primary-light);background:rgba(23,184,144,.12);
  border:1px solid rgba(23,184,144,.3);padding:5px 13px;border-radius:var(--r-pill);
  margin-bottom:20px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--amber);flex:none}
.page-hero h1{font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.25;letter-spacing:0}
.page-hero-sub{margin-top:16px;font-size:17px;color:var(--text-2);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-facts{
  display:flex;flex-wrap:wrap;margin-top:38px;padding-top:24px;
  border-top:1px solid var(--border);
}
.hero-fact{padding-right:34px;margin-right:34px;border-right:1px solid var(--border)}
.hero-fact:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-fact strong{
  display:block;font-size:26px;font-weight:700;line-height:1.25;color:var(--text);
  font-variant-numeric:tabular-nums;
}
.hero-fact span{font-size:13px;color:var(--text-3)}

/* ---------- 横向滚动卡组 ---------- */
.scroll-wrap{position:relative}
.scroll-row{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:10px;scrollbar-width:none;-ms-overflow-style:none;
}
.scroll-row::-webkit-scrollbar{display:none}
.scroll-card{
  flex:0 0 330px;scroll-snap-align:start;
  background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px;transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.scroll-card:hover{border-color:rgba(23,184,144,.4);box-shadow:var(--shadow-card);transform:translateY(-3px)}
.icon-box{
  width:40px;height:40px;border-radius:12px;background:rgba(23,184,144,.12);
  display:grid;place-items:center;color:var(--primary);margin-bottom:18px;
}
.scroll-card h3{font-size:19px;font-weight:600;line-height:1.5;margin-bottom:10px}
.scroll-card p{font-size:14.5px;color:var(--text-2);line-height:1.75}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag{
  font-size:12px;color:var(--primary-light);background:rgba(23,184,144,.1);
  border:1px solid rgba(23,184,144,.24);border-radius:var(--r-pill);padding:4px 10px;
}
.tag--amber{color:var(--amber);background:rgba(245,165,36,.1);border-color:rgba(245,165,36,.28)}
.scroll-nav{display:flex;gap:10px;margin-top:26px}
.scroll-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--border);
  display:grid;place-items:center;color:var(--text-2);
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.scroll-btn:hover{background:var(--primary);border-color:var(--primary);color:var(--on-primary);transform:translateY(-2px)}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{
  background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px;transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.scene-card:hover{border-color:rgba(23,184,144,.4);box-shadow:var(--shadow-card);transform:translateY(-3px)}
.scene-card .num{
  font-size:13px;font-weight:700;color:var(--amber);letter-spacing:.08em;
  font-variant-numeric:tabular-nums;display:block;margin-bottom:12px;
}
.scene-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.scene-card p{font-size:14.5px;color:var(--text-2)}

/* ---------- 内容卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--bg-2);
  border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.card:hover{border-color:rgba(23,184,144,.4);box-shadow:var(--shadow-card);transform:translateY(-3px)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-deep)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.05)}
.card-pill{
  position:absolute;top:12px;right:12px;font-size:12px;font-weight:600;
  background:rgba(23,184,144,.92);color:var(--on-primary);
  padding:4px 11px;border-radius:var(--r-pill);
}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{
  font-size:19px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--ease);
}
.card:hover .card-body h3{color:var(--primary-light)}
.card-desc{
  font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.card-foot .date{display:inline-flex;align-items:center;gap:6px}
.card-foot .arrow{color:var(--text-3);transition:transform var(--ease),color var(--ease)}
.card:hover .card-foot .arrow{transform:translateX(4px);color:var(--primary)}

/* ---------- 两栏：目录 + 内容 ---------- */
.two-col{display:grid;grid-template-columns:210px 1fr;gap:52px;align-items:start}
.toc{position:sticky;top:96px}
.toc-title{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.1em;margin-bottom:14px}
.toc ul{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--border)}
.toc a{
  display:block;padding:9px 0 9px 16px;margin-left:-1px;
  font-size:14px;color:var(--text-2);border-left:2px solid transparent;
}
.toc a:hover{color:var(--primary-light);border-left-color:var(--primary)}
.prose-block{
  background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-card);
  padding:30px;margin-bottom:20px;transition:border-color var(--ease);
}
.prose-block:hover{border-color:rgba(23,184,144,.32)}
.prose-block h3{font-size:20px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.prose-block h3 .badge{
  font-size:12px;font-weight:600;color:var(--amber);
  background:rgba(245,165,36,.12);border:1px solid rgba(245,165,36,.3);
  border-radius:var(--r-pill);padding:2px 10px;
}
.prose-block p{color:var(--text-2);font-size:15.5px}
.prose-block p+p{margin-top:12px}
.check-list{display:grid;gap:10px;margin-top:16px}
.check-list li{position:relative;padding-left:26px;color:var(--text-2);font-size:15px;line-height:1.75}
.check-list li::before{
  content:"";position:absolute;left:2px;top:.62em;width:11px;height:6px;
  border-left:2px solid var(--primary);border-bottom:2px solid var(--primary);
  transform:rotate(-45deg);
}
.update-list{display:grid;gap:14px;margin-top:16px}
.update-item{
  display:grid;grid-template-columns:84px 1fr;gap:16px;align-items:start;
  padding-bottom:14px;border-bottom:1px dashed var(--border);
}
.update-item:last-child{border-bottom:0;padding-bottom:0}
.update-item .ver{
  font-size:13px;font-weight:700;color:var(--primary-light);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.update-item p{font-size:14.5px;color:var(--text-2);margin:0}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:880px;margin:0 auto}
.faq-item{
  background:var(--bg-2);border:1px solid var(--border);border-radius:12px;
  overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;cursor:pointer;list-style:none;
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary-light)}
.faq-icon{
  flex:none;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--border);display:grid;place-items:center;color:var(--text-2);
  transition:transform .25s ease,background var(--ease),border-color var(--ease),color var(--ease);
}
.faq-item[open]{border-color:rgba(23,184,144,.42);box-shadow:inset 3px 0 0 var(--primary)}
.faq-item[open] summary{color:var(--primary-light)}
.faq-item[open] .faq-icon{
  transform:rotate(45deg);background:rgba(23,184,144,.15);
  border-color:rgba(23,184,144,.5);color:var(--primary-light);
}
.faq-body{padding:0 20px 20px;font-size:15px;color:var(--text-2);line-height:1.8}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--border);border-radius:24px;
  background:linear-gradient(135deg,rgba(23,184,144,.16) 0%,rgba(12,22,19,.6) 55%,rgba(245,165,36,.08) 100%);
  padding:52px;display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;line-height:1.4;margin-bottom:12px}
.cta-band p{color:var(--text-2);font-size:15.5px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cross{
  margin-top:26px;padding-top:22px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
}
.cross-label{font-size:13px;color:var(--text-3);margin-right:4px}
.cross-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);
  border:1px solid var(--border);border-radius:var(--r-pill);padding:8px 16px;
}
.cross-link:hover{color:var(--primary-light);border-color:rgba(23,184,144,.5);background:rgba(23,184,144,.08)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--border);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding-bottom:46px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:16px}
.footer-desc{color:var(--text-3);font-size:14px;line-height:1.8;max-width:360px}
.footer-social{display:flex;gap:12px;margin-top:22px}
.footer-social a{
  width:36px;height:36px;border:1px solid var(--border);border-radius:10px;
  display:grid;place-items:center;color:var(--text-2);
  transition:color var(--ease),border-color var(--ease),transform var(--ease);
}
.footer-social a:hover{color:var(--primary);border-color:rgba(23,184,144,.5);transform:translateY(-2px)}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-3)}
.footer-col a:hover{color:var(--primary-light)}
.footer-bottom{
  border-top:1px solid var(--border);padding:20px 0;text-align:center;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 24px}
  .nav-inner{padding:0 24px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .section--tight{padding:52px 0}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .two-col{grid-template-columns:1fr;gap:28px}
  .toc{position:static}
  .toc ul{flex-direction:row;flex-wrap:wrap;border-left:0;gap:8px}
  .toc a{border-left:0;border:1px solid var(--border);border-radius:var(--r-pill);padding:7px 14px}
  .toc a:hover{border-color:rgba(23,184,144,.5)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .nav-links{
    position:fixed;top:0;right:0;height:100dvh;width:min(320px,84vw);
    background:var(--bg);border-left:1px solid var(--border);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:92px 24px 28px;z-index:80;
    transform:translateX(105%);transition:transform .3s ease;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{padding:12px 8px;font-size:16px;border-radius:10px}
  .nav-link.is-active::after{left:8px;right:auto;width:22px;bottom:6px}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .drawer-cta{display:inline-flex;margin-top:18px;width:100%}
  .page-hero{padding:64px 0 60px}
}
@media (max-width:768px){
  body{font-size:15px}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .page-hero{padding:52px 0 48px}
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
  .page-hero-sub{font-size:16px}
  .hero-facts{gap:0}
  .hero-fact{padding-right:22px;margin-right:22px;margin-bottom:14px}
  .hero-fact strong{font-size:22px}
  .scroll-card{flex:0 0 82%}
  .card-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 24px;border-radius:20px}
  .prose-block{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:34px}
  .footer-desc{max-width:none}
}
@media (max-width:560px){
  .container{padding:0 18px}
  .nav-inner{padding:0 18px}
  .brand{font-size:16px}
  .brand-mark{width:28px;height:28px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cta-actions{flex-direction:column;align-items:stretch;width:100%}
  .cta-actions .btn{width:100%}
  .hero-fact{padding-right:18px;margin-right:18px}
  .update-item{grid-template-columns:1fr;gap:6px}
  .scroll-card{flex:0 0 88%;padding:22px}
  .faq-item summary{padding:16px;font-size:15px}
  .faq-body{padding:0 16px 18px;font-size:14.5px}
}
@media (max-width:420px){
  .container{padding:0 16px}
  .nav-inner{padding:0 16px}
  .page-hero h1{font-size:26px}
  .section-title{font-size:21px}
  .hero-fact{padding-right:14px;margin-right:14px}
  .hero-fact strong{font-size:20px}
  .cross-link{width:100%;justify-content:center}
}