/* roulang page: index */
:root{
  --brand:#12D6A0;
  --brand-soft:rgba(18,214,160,.12);
  --amber:#FFB03A;
  --amber-soft:rgba(255,176,58,.12);
  --magenta:#FF4D7D;
  --magenta-soft:rgba(255,77,125,.12);
  --bg:#0A1310;
  --bg-alt:#0F1D19;
  --bg-card:#122420;
  --light:#F4F8F6;
  --light-text:#101E1B;
  --text:#EAF6F2;
  --text-2:#9DB8B1;
  --text-3:#6E8A83;
  --line:#1E3630;
  --line-active:rgba(18,214,160,.4);
  --r-lg:18px;
  --r-md:16px;
  --r-btn:12px;
  --r-input:10px;
  --r-img:14px;
  --r-badge:6px;
  --shadow-dark:0 0 0 1px rgba(18,214,160,.12),0 12px 32px rgba(0,0,0,.45);
  --shadow-light:0 8px 24px rgba(10,19,16,.08);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-num:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --gap:24px;
  --section-pad:88px;
  --side:240px;
}
*,*::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;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,transform .2s ease}
a:hover{color:var(--amber)}
img{max-width:100%;display:block;border:0}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 28px}

/* ---------- 左侧导航 ---------- */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);
  background:var(--bg);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;
}
.sidenav__brand{
  height:72px;display:flex;align-items:center;gap:12px;
  padding:0 20px;border-bottom:1px solid var(--line);flex:0 0 auto;
}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:10px;
  background:linear-gradient(145deg,rgba(18,214,160,.18),rgba(18,214,160,.04));
  border:1px solid rgba(18,214,160,.35);
  display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:22px;height:22px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-main{font-size:15px;font-weight:700;color:var(--text);letter-spacing:.01em}
.brand-sub{font-size:12px;color:var(--text-3);margin-top:3px}
.sidenav__nav{flex:1 1 auto;overflow-y:auto;padding:18px 12px 12px}
.nav-group{
  font-size:11px;letter-spacing:.12em;color:var(--text-3);
  padding:0 8px;margin:20px 0 8px;text-transform:uppercase;
}
.nav-group:first-child{margin-top:0}
.nav-list li{margin-bottom:4px}
.nav-link{
  display:flex;align-items:center;gap:12px;height:46px;padding:0 10px 0 20px;
  border-radius:10px;color:var(--text-2);font-size:15px;position:relative;
  transition:background .2s ease,color .2s ease;
}
.nav-link i{width:20px;text-align:center;font-size:16px;flex:0 0 20px}
.nav-link:hover{background:rgba(18,214,160,.08);color:var(--brand)}
.nav-link.is-active{color:var(--brand);background:rgba(18,214,160,.07)}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.sidenav__foot{flex:0 0 auto;padding:16px;border-top:1px solid var(--line)}
.sidenav__note{font-size:12px;color:var(--text-3);line-height:1.7;margin-top:10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  text-align:center;line-height:1.2;
}
.btn--primary{background:var(--brand);color:#0A1310;border-radius:999px}
.btn--primary:hover{background:#1FE4AE;color:#0A1310;transform:translateY(-2px);box-shadow:0 10px 24px rgba(18,214,160,.28)}
.btn--primary:active{transform:translateY(0);box-shadow:none}
.btn--ghost{background:transparent;color:var(--text);border:1px solid var(--line);border-radius:999px}
.btn--ghost:hover{color:var(--brand);border-color:var(--line-active);transform:translateY(-2px)}
.btn--block{display:flex;width:100%}
.btn--sm{min-height:40px;padding:10px 20px;font-size:14px}

/* ---------- 顶栏与抽屉（移动端） ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:70;height:60px;
  align-items:center;justify-content:space-between;padding:0 14px;
  background:rgba(10,19,16,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar__btn{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:10px;background:transparent;border:1px solid var(--line);color:var(--text);font-size:17px;
}
.topbar__brand{
  font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis;
}
.topbar__cta{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:999px;background:var(--brand);color:#0A1310;font-size:16px;border:0;
}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:88vw;max-width:360px;z-index:90;
  background:var(--bg);border-right:1px solid var(--line);
  transform:translateX(-102%);transition:transform .28s ease;
  overflow-y:auto;padding:20px 16px 28px;
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer__close{
  width:44px;height:44px;border-radius:10px;background:transparent;
  border:1px solid var(--line);color:var(--text);font-size:17px;
}
.drawer .nav-link{height:52px}
.drawer__foot{margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,9,8,.66);z-index:85;
  opacity:0;visibility:hidden;transition:opacity .28s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
body.is-locked{overflow:hidden}

/* ---------- 页面主体 ---------- */
.page{margin-left:var(--side);min-height:100vh;display:flex;flex-direction:column}
.section{padding:var(--section-pad) 0}
.section--alt{background:var(--bg-alt)}
.section--tight{padding:64px 0}
.section__head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;flex-wrap:wrap;
}
.section__title{font-size:28px;line-height:1.36;font-weight:700;letter-spacing:.01em}
.section__desc{font-size:15px;color:var(--text-2);margin-top:12px;max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;font-weight:700;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand)}
.link-more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.link-more:hover{color:var(--amber)}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:640px;display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,19,16,.94) 0%,rgba(10,19,16,.80) 46%,rgba(10,19,16,.58) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:52px 52px;
}
.hero__inner{position:relative;z-index:2;max-width:640px;padding:96px 0}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  padding:5px 12px;border-radius:var(--r-badge);background:var(--brand-soft);
  color:var(--brand);margin-bottom:20px;letter-spacing:.06em;
}
.hero__title{font-size:40px;line-height:1.1;font-weight:800;letter-spacing:.01em}
.hero__sub{font-size:20px;color:var(--text-2);margin-top:18px;max-width:560px}
.hero__cta{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero__stats{
  display:flex;gap:44px;margin-top:56px;padding-top:26px;
  border-top:1px solid rgba(30,54,48,.9);flex-wrap:wrap;
}
.hero__stat-num{
  font-family:var(--font-num);font-size:28px;font-weight:700;color:var(--brand);line-height:1.2;
}
.hero__stat-label{font-size:12px;color:var(--text-3);letter-spacing:.08em;margin-top:4px}

/* ---------- 功能卡 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap)}
.feature-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:var(--gap);display:flex;flex-direction:column;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.feature-card:hover{transform:translateY(-4px);border-color:var(--line-active);box-shadow:var(--shadow-dark)}
.feature-card--wide{grid-column:span 2;flex-direction:row;padding:0;overflow:hidden;gap:0}
.feature-card__media{flex:0 0 46%;position:relative;overflow:hidden;background:var(--bg-alt)}
.feature-card__media img{width:100%;height:100%;object-fit:cover;min-height:280px;transition:transform .2s ease-out}
.feature-card--wide:hover .feature-card__media img{transform:scale(1.03)}
.feature-card__media--inline{margin:-24px -24px 18px;border-radius:0}
.feature-card__media--inline img{min-height:180px;border-radius:0}
.feature-card__body{padding:32px;display:flex;flex-direction:column;flex:1 1 auto}
.feature-card__icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(18,214,160,.3);background:var(--brand-soft);color:var(--brand);
  font-size:18px;margin-bottom:18px;
}
.feature-card__title{font-size:20px;line-height:1.4;font-weight:600}
.feature-card__text{font-size:15px;color:var(--text-2);margin-top:12px;flex:1 1 auto}
.feature-card__link{
  margin-top:20px;font-size:14px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:8px;
}
.feature-card__link i{transition:transform .2s ease-out}
.feature-card:hover .feature-card__link i{transform:translateX(4px)}

/* ---------- 权益卡 ---------- */
.perk-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.perk-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:var(--gap);display:flex;flex-direction:column;position:relative;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.perk-card:hover{transform:translateY(-4px);border-color:var(--line-active);box-shadow:var(--shadow-dark)}
.badge{
  display:inline-flex;align-items:center;font-size:12px;font-weight:700;
  padding:4px 10px;border-radius:var(--r-badge);line-height:1.5;
}
.badge--brand{background:var(--brand-soft);color:var(--brand)}
.badge--amber{background:var(--amber-soft);color:var(--amber)}
.badge--magenta{background:var(--magenta-soft);color:var(--magenta)}
.perk-card__badge{position:absolute;top:18px;right:18px}
.perk-card__icon{
  width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-2);font-size:17px;margin-bottom:20px;
}
.perk-card__title{font-size:20px;font-weight:600;line-height:1.4;padding-right:60px}
.perk-card__text{font-size:14px;color:var(--text-2);margin-top:10px;flex:1 1 auto}
.progress{margin-top:22px;height:4px;border-radius:2px;background:rgba(255,255,255,.08);overflow:hidden}
.progress__bar{height:100%;background:var(--brand);border-radius:2px}
.progress__meta{display:flex;justify-content:space-between;font-size:12px;color:var(--text-3);margin-top:8px}

/* ---------- 步骤轴 ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);max-width:1000px;margin:0 auto}
.steps::before{
  content:"";position:absolute;left:14px;right:14px;top:14px;height:1px;
  background:var(--line);z-index:0;
}
.step{position:relative;z-index:1;padding-right:12px}
.step__dot{
  width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:2px solid var(--line);background:var(--bg-alt);
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--text-3);
}
.step.is-done .step__dot{background:var(--brand);border-color:var(--brand);color:#0A1310}
.step__title{font-size:20px;font-weight:600;margin-top:18px;line-height:1.4}
.step__text{font-size:14px;color:var(--text-2);margin-top:8px}

/* ---------- 内容列表 ---------- */
.content-list{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap)}
.post-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.post-card:hover{transform:translateY(-4px);border-color:var(--line-active);box-shadow:var(--shadow-dark)}
.post-card__media{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt)}
.post-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.post-card:hover .post-card__media img{transform:scale(1.03)}
.post-card__body{padding:var(--gap);display:flex;flex-direction:column;flex:1 1 auto}
.post-card__title{font-size:20px;font-weight:600;line-height:1.45;margin-top:14px}
.post-card__title a{color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card__title a:hover{color:var(--brand)}
.post-card__text{
  font-size:14px;color:var(--text-2);margin-top:12px;flex:1 1 auto;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
}
.post-card__time{font-size:13px;color:var(--text-3);font-family:var(--font-num)}
.post-card__link{font-size:13px;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.empty-state{
  min-height:220px;border:1px dashed var(--line);border-radius:var(--r-md);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  color:var(--text-2);font-size:15px;background:rgba(255,255,255,.02);text-align:center;padding:32px;
}
.empty-state i{font-size:26px;color:var(--text-3)}

/* ---------- 引用与指标 ---------- */
.proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.proof-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:var(--gap);display:flex;flex-direction:column;
}
.proof-card__num{font-family:var(--font-num);font-size:28px;font-weight:700;color:var(--brand)}
.proof-card__label{font-size:13px;color:var(--text-3);margin-top:4px}
.proof-card__quote{
  font-size:15px;color:var(--text-2);margin-top:18px;padding-left:16px;
  border-left:2px solid var(--line);line-height:1.8;
}
.proof-card__meta{font-size:12px;color:var(--text-3);margin-top:14px}

/* ---------- FAQ ---------- */
.faq{max-width:900px;margin:0 auto}
.faq-item{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:14px;overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{background:rgba(255,255,255,.03)}
.faq-item[open]{border-color:var(--line-active)}
.faq-item summary{
  min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:16px 22px;font-size:16px;font-weight:600;color:var(--text);
  list-style:none;cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:focus-visible{outline:2px solid var(--amber);outline-offset:-2px}
.faq-item__icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
  font-size:12px;transition:transform .25s ease,border-color .25s ease;
}
.faq-item[open] .faq-item__icon{transform:rotate(90deg);border-color:var(--line-active)}
.faq-item__body{padding:0 22px 20px;font-size:15px;color:var(--text-2);line-height:1.8}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;padding:76px 0;text-align:center;overflow:hidden;
  background:linear-gradient(180deg,rgba(18,214,160,.16),rgba(10,19,16,.9)),var(--bg-alt);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;top:50%;width:120px;height:1px;background:linear-gradient(90deg,transparent,var(--brand));
}
.cta-band::before{left:24px}
.cta-band::after{right:24px;transform:scaleX(-1)}
.cta-band__title{font-size:28px;font-weight:700;line-height:1.4}
.cta-band__text{font-size:15px;color:var(--text-2);margin-top:14px}
.cta-band__actions{margin-top:30px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ---------- 数据条 ---------- */
.statbar{background:var(--bg);border-top:1px solid var(--line);padding:48px 0}
.statbar__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);text-align:center}
.statbar__num{font-family:var(--font-num);font-size:28px;font-weight:700;color:var(--text)}
.statbar__label{font-size:13px;color:var(--text-3);margin-top:6px}

/* ---------- 页脚 ---------- */
.footer{background:var(--bg);border-top:1px solid var(--line);padding:56px 0 0}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:var(--gap)}
.footer__logo{font-size:17px;font-weight:700;color:var(--text);margin-bottom:14px}
.footer__desc{font-size:14px;color:var(--text-2);max-width:320px}
.footer__title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.footer__list li{margin-bottom:10px}
.footer__list a{font-size:14px;color:var(--text-2);display:inline-block}
.footer__list a:hover{color:var(--brand);transform:translateX(2px)}
.footer__list span{font-size:14px;color:var(--text-2)}
.footer__bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:20px 0;
}
.footer__bottom-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer__bottom-inner p{font-size:13px}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--brand);color:#0A1310;border:0;font-size:17px;
  display:flex;align-items:center;justify-content:center;z-index:80;
  opacity:0;visibility:hidden;transition:opacity .25s ease,transform .25s ease;
}
.to-top.is-visible{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-3px)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .perk-grid{grid-template-columns:repeat(2,1fr)}
  .proof-grid{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:991px){
  :root{--side:88px;--section-pad:72px}
  .brand-text{display:none}
  .sidenav__brand{justify-content:center;padding:0}
  .nav-link{justify-content:center;padding:0;height:48px}
  .nav-link span{position:absolute;left:96px;white-space:nowrap;background:var(--bg-alt);
    border:1px solid var(--line);padding:4px 10px;border-radius:8px;font-size:13px;
    opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:5}
  .nav-link:hover span{opacity:1;visibility:visible}
  .nav-group{text-align:center;padding:0;font-size:10px}
  .sidenav__foot{padding:12px 10px}
  .sidenav__note{display:none}
  .sidenav__foot .btn{padding:12px 8px;font-size:13px}
  .hero{min-height:520px}
  .feature-card--wide{flex-direction:column}
  .feature-card__media{flex:0 0 auto}
  .feature-card__media img{min-height:220px}
  .feature-card__body{padding:24px}
  .content-list{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  :root{--section-pad:48px;--gap:16px}
  .sidenav{display:none}
  .page{margin-left:0}
  .topbar{display:flex}
  .container{padding:0 18px}
  .hero{min-height:480px}
  .hero__inner{padding:64px 0}
  .hero__title{font-size:28px;line-height:1.28}
  .hero__sub{font-size:16px;margin-top:14px}
  .hero__cta{flex-direction:column;margin-top:26px}
  .hero__cta .btn{width:100%}
  .hero__stats{gap:24px;margin-top:36px}
  .hero__stat-num{font-size:22px}
  .section__title,.cta-band__title{font-size:22px}
  .feature-grid{grid-template-columns:1fr}
  .feature-card--wide{grid-column:span 1}
  .perk-grid,.content-list,.proof-grid,.statbar__grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:20px}
  .steps::before{left:13px;right:auto;top:14px;bottom:14px;width:2px;height:auto;
    background:repeating-linear-gradient(180deg,var(--line) 0 6px,transparent 6px 12px)}
  .step{display:grid;grid-template-columns:28px 1fr;column-gap:16px;padding-right:0}
  .step__dot{grid-row:span 2}
  .step__title{margin-top:0;font-size:17px}
  .step__text{margin-top:6px;grid-column:2}
  .cta-band::before,.cta-band::after{display:none}
  .footer__grid{grid-template-columns:1fr}
  .footer__bottom-inner{flex-direction:column;align-items:flex-start}
  .to-top{right:16px;bottom:16px}
  .post-card__body{padding:16px}
  .feature-card__body{padding:20px}
  .perk-card,.proof-card{padding:18px}
  .faq-item summary{padding:14px 16px;font-size:15px}
  .faq-item__body{padding:0 16px 18px}
}

/* roulang page: article */
:root{
  --brand:#12D6A0;
  --brand-strong:#0F9E7A;
  --amber:#FFB03A;
  --magenta:#FF4D7D;
  --bg:#0A1310;
  --bg-alt:#0F1D19;
  --card:#122420;
  --read-bg:#F4F8F6;
  --read-text:#101E1B;
  --read-muted:#4C615B;
  --text:#EAF6F2;
  --text-2:#9DB8B1;
  --text-3:#6E8A83;
  --line:#1E3630;
  --line-active:rgba(18,214,160,0.4);
  --glow:0 0 0 1px rgba(18,214,160,0.12), 0 12px 32px rgba(0,0,0,0.45);
  --soft-shadow:0 8px 24px rgba(10,19,16,0.08);
  --r-lg:18px;
  --r-md:16px;
  --r-sm:12px;
  --r-xs:10px;
  --r-img:14px;
  --r-badge:6px;
  --sidenav-w:240px;
  --sidenav-w-sm:88px;
  --topbar-h:60px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--amber)}
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible{
  outline:2px solid var(--amber);
  outline-offset:2px;
}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--text)}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
table{border-collapse:collapse;width:100%}
::selection{background:rgba(18,214,160,0.28);color:#fff}

/* ---------- 基础框架 ---------- */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.page{margin-left:var(--sidenav-w);min-height:100vh;display:flex;flex-direction:column}
.main{flex:1 1 auto;padding:28px 0 0}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidenav-w);
  background:var(--bg);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  z-index:60;
}
.sidenav__brand{
  height:72px;
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 18px;
  border-bottom:1px solid var(--line);
  flex:0 0 auto;
}
.brand__mark{
  width:40px;height:40px;flex:0 0 40px;
  border-radius:11px;
  background:linear-gradient(150deg,rgba(18,214,160,0.22),rgba(18,214,160,0.03));
  border:1px solid rgba(18,214,160,0.35);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:17px;
}
.brand__text{min-width:0}
.brand__name{
  font-size:14px;font-weight:700;letter-spacing:.02em;color:var(--text);
  line-height:1.35;display:block;
}
.brand__sub{font-size:12px;color:var(--text-3);line-height:1.4;display:block;margin-top:2px}
.sidenav__inner{
  flex:1 1 auto;
  overflow-y:auto;
  padding:8px 12px 16px;
}
.nav-group{
  font-size:11px;
  letter-spacing:.12em;
  color:var(--text-3);
  margin:20px 0 8px;
  padding-left:8px;
  text-transform:uppercase;
}
.nav-list{display:flex;flex-direction:column;gap:2px}
.nav-link{
  display:flex;align-items:center;gap:12px;
  height:46px;padding:0 12px 0 20px;
  border-radius:10px;
  color:var(--text-2);
  font-size:15px;
  position:relative;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-link i{font-size:16px;width:20px;text-align:center;color:inherit}
.nav-link span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-link:hover{background:rgba(18,214,160,0.08);color:var(--brand)}
.nav-link.is-active{
  background:rgba(18,214,160,0.10);
  color:var(--brand);
  font-weight:600;
}
.nav-link.is-active::before{
  content:"";position:absolute;left:4px;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--brand);
}
.sidenav__foot{
  flex:0 0 auto;
  padding:16px 16px 20px;
  border-top:1px solid var(--line);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:12px 28px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:700;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  border:1px solid transparent;
  line-height:1.2;
  text-align:center;
}
.btn--primary{background:var(--brand);color:#0A1310;border-radius:999px}
.btn--primary:hover{
  background:#1BE3AD;color:#0A1310;
  transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(18,214,160,0.28);
}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn--block{width:100%}
.sidenav__hint{font-size:12px;color:var(--text-3);text-align:center;margin-top:12px;line-height:1.6}

/* ---------- 移动端顶部导航 ---------- */
.topbar{
  display:none;
  position:sticky;top:0;z-index:70;
  height:var(--topbar-h);
  background:rgba(10,19,16,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  align-items:center;
  gap:12px;
  padding:0 16px;
}
.topbar__burger{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  color:var(--text);border:1px solid var(--line);font-size:17px;
}
.topbar__brand{
  flex:1 1 auto;min-width:0;
  font-size:14px;font-weight:700;color:var(--text);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.topbar__cta{
  width:44px;height:44px;border-radius:999px;
  background:var(--brand);color:#0A1310;
  display:flex;align-items:center;justify-content:center;font-size:16px;
}
.drawer{
  position:fixed;inset:0;z-index:90;
  background:var(--bg);
  transform:translateX(-102%);
  transition:transform .28s ease-out;
  display:flex;flex-direction:column;
  width:88vw;max-width:340px;
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{
  height:var(--topbar-h);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;border-bottom:1px solid var(--line);
}
.drawer__name{font-size:14px;font-weight:700}
.drawer__close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--text)}
.drawer__body{flex:1 1 auto;overflow-y:auto;padding:8px 12px 20px}
.drawer .nav-link{height:52px;font-size:16px}
.drawer__foot{padding:16px;border-top:1px solid var(--line)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,10,8,0.6);
  z-index:80;opacity:0;pointer-events:none;transition:opacity .28s ease-out;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#334C45}
.breadcrumb .current{color:var(--text-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头 ---------- */
.article-head{
  position:relative;
  padding:40px 0 34px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-head::after{
  content:"";
  position:absolute;right:-60px;top:-40px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(18,214,160,0.10),transparent 68%);
  pointer-events:none;
}
.article-head__label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.1em;color:var(--text-3);
  text-transform:uppercase;margin-bottom:14px;
}
.article-head__label::before{content:"";width:22px;height:1px;background:var(--brand)}
.article-head h1{
  font-size:32px;line-height:1.35;font-weight:800;letter-spacing:.01em;
  max-width:22ch;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:20px;font-size:13px;color:var(--text-3);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;padding:4px 10px;border-radius:var(--r-badge);
  font-weight:600;line-height:1.6;
}
.badge--brand{background:rgba(18,214,160,0.12);color:var(--brand)}
.badge--amber{background:rgba(255,176,58,0.12);color:var(--amber)}
.badge--magenta{background:rgba(255,77,125,0.12);color:var(--magenta)}
.article-meta time{color:var(--text-2);font-variant-numeric:tabular-nums}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#334C45}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 280px;
  gap:32px;
  align-items:start;
  padding:36px 0 0;
}
.article-body-card{
  background:var(--read-bg);
  color:var(--read-text);
  border-radius:var(--r-lg);
  padding:48px;
  max-width:860px;
  box-shadow:var(--soft-shadow);
}
.article-body-card h2{
  font-size:24px;
  color:var(--read-text);
  margin:40px 0 20px;
  line-height:1.45;
  letter-spacing:.01em;
}
.article-body-card h2:first-child{margin-top:0}
.article-body-card h3{
  font-size:20px;
  color:var(--read-text);
  margin:30px 0 14px;
  font-weight:600;
}
.article-body-card h4{font-size:17px;color:var(--read-text);margin:24px 0 12px}
.article-body-card p{
  font-size:17px;line-height:1.9;color:#22322E;margin:0 0 20px;
}
.article-body-card a{color:var(--brand-strong);text-decoration:underline;text-underline-offset:4px}
.article-body-card a:hover{color:#C9831F}
.article-body-card strong{color:#0B1A16;font-weight:700}
.article-body-card ul,
.article-body-card ol{
  margin:0 0 20px;padding-left:24px;color:#22322E;font-size:17px;line-height:1.9;
}
.article-body-card ul li{list-style:disc;margin-bottom:10px}
.article-body-card ol li{list-style:decimal;margin-bottom:10px}
.article-body-card li::marker{color:var(--brand-strong)}
.article-body-card blockquote{
  margin:24px 0;
  padding:16px 22px;
  border-left:3px solid var(--brand);
  background:rgba(18,214,160,0.06);
  border-radius:0 var(--r-xs) var(--r-xs) 0;
  color:#1D2E2A;
}
.article-body-card blockquote p:last-child{margin-bottom:0}
.article-body-card img{
  border-radius:var(--r-img);
  width:100%;
  margin:24px 0 8px;
}
.article-body-card figure{margin:24px 0}
.article-body-card figcaption{
  font-size:13px;text-align:center;color:var(--read-muted);margin-top:4px;
}
.article-body-card table{
  width:100%;margin:24px 0;font-size:15px;
  border:1px solid #D7E3DF;border-radius:var(--r-xs);overflow:hidden;
}
.article-body-card thead th{
  background:#E7EFEC;color:#0B1A16;font-weight:600;text-align:left;
}
.article-body-card th,
.article-body-card td{
  border-bottom:1px solid #D7E3DF;padding:12px 14px;line-height:1.7;
}
.article-body-card tbody tr:last-child td{border-bottom:0}
.article-body-card code{
  background:#E4EDEA;color:#0F5C49;padding:2px 6px;border-radius:6px;font-size:14px;
}
.article-body-card hr{border:0;border-top:1px solid #D7E3DF;margin:32px 0}

.notice-empty{
  background:var(--read-bg);
  border-radius:var(--r-lg);
  padding:56px 32px;
  text-align:center;
  color:var(--read-text);
  max-width:860px;
  box-shadow:var(--soft-shadow);
}
.notice-empty i{font-size:28px;color:#8AA79F;display:block;margin-bottom:16px}
.notice-empty h2{font-size:20px;color:var(--read-text);margin-bottom:10px}
.notice-empty p{font-size:15px;color:var(--read-muted);margin-bottom:20px}
.notice-empty a{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand-strong);font-weight:600;
  text-decoration:underline;text-underline-offset:4px;
}

/* ---------- 侧栏 ---------- */
.sidebar{position:sticky;top:24px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--read-bg);
  color:var(--read-text);
  border-radius:var(--r-md);
  padding:22px;
  box-shadow:var(--soft-shadow);
}
.side-card__title{
  font-size:14px;font-weight:700;color:#0B1A16;
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
  letter-spacing:.02em;
}
.side-card__title i{color:var(--brand-strong);font-size:14px}
.side-list{display:flex;flex-direction:column;gap:10px}
.side-list a{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:#22322E;line-height:1.65;
}
.side-list a i{color:#7BA79A;font-size:13px;margin-top:4px}
.side-list a:hover{color:var(--brand-strong)}
.side-facts{display:flex;flex-direction:column;gap:14px}
.side-fact{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.side-fact__num{
  font-size:22px;font-weight:800;color:#0B1A16;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.side-fact__label{font-size:12px;color:var(--read-muted);text-align:right;line-height:1.5}

/* ---------- 相关推荐 ---------- */
.section{padding:88px 0 0}
.section--tight{padding-top:64px}
.section__head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:28px;
}
.section__head h2{font-size:28px;line-height:1.35}
.section__head p{font-size:15px;color:var(--text-2);margin-top:10px;max-width:62ch}
.link-more{
  font-size:14px;color:var(--brand);white-space:nowrap;
  text-underline-offset:4px;text-decoration:underline;
}
.link-more:hover{color:var(--amber)}
.related-grid{margin-left:-12px;margin-right:-12px}
.related-grid > .cell{padding:0 12px 24px}
.card-related{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  height:100%;
  display:flex;flex-direction:column;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.card-related:hover{
  transform:translateY(-4px);
  border-color:var(--line-active);
  box-shadow:var(--glow);
}
.card-related__media{
  position:relative;aspect-ratio:16/9;overflow:hidden;background:#0B1A16;
}
.card-related__media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .2s ease-out;
}
.card-related:hover .card-related__media img{transform:scale(1.03)}
.card-related__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-related__body h3{
  font-size:16px;line-height:1.6;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-related__body h3 a{color:var(--text)}
.card-related__body h3 a:hover{color:var(--brand)}
.card-related__meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);padding-top:12px;border-top:1px solid var(--line);
}
.card-related__meta time{font-variant-numeric:tabular-nums}

/* ---------- 返回入口 ---------- */
.back-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:32px 0 0;flex-wrap:wrap;
}
.back-row a{font-size:14px;color:var(--text-2)}
.back-row a:hover{color:var(--brand)}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq__item{
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:background .2s ease-out,border-color .2s ease-out;
}
.faq__item[open]{border-color:rgba(18,214,160,0.3)}
.faq__item summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 22px;
  font-size:16px;font-weight:600;color:var(--text);
  cursor:pointer;
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary:hover{background:rgba(255,255,255,0.03)}
.faq__icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform .25s ease-out,border-color .25s ease-out;
}
.faq__item[open] .faq__icon{transform:rotate(90deg);border-color:var(--line-active)}
.faq__answer{
  padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2);
  border-top:1px solid var(--line);padding-top:16px;margin:0 22px 20px;padding-left:0;padding-right:0;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  margin-top:88px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(60% 120% at 50% 0%,rgba(18,214,160,0.14),transparent 70%),
    var(--bg-alt);
  padding:64px 0;
  text-align:center;
  overflow:hidden;
}
.cta-band::before,
.cta-band::after{
  content:"";position:absolute;top:50%;width:120px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,214,160,0.5),transparent);
}
.cta-band::before{left:6%}
.cta-band::after{right:6%}
.cta-band h2{font-size:28px;line-height:1.4}
.cta-band p{font-size:15px;color:var(--text-2);margin:14px auto 26px;max-width:60ch}
.cta-band__actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  padding:36px 0;border-top:1px solid var(--line);
  margin-top:88px;
}
.stat{text-align:left}
.stat__num{
  font-size:28px;font-weight:800;color:var(--brand);
  font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
  letter-spacing:.02em;line-height:1.2;
}
.stat__label{font-size:12px;color:var(--text-3);margin-top:4px}

/* ---------- 页脚 ---------- */
.footer{
  background:var(--bg);
  border-top:1px solid var(--line);
  margin-top:88px;
  padding-top:56px;
}
.footer__grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;
  padding-bottom:40px;
}
.footer__logo{
  font-size:16px;font-weight:800;color:var(--text);margin-bottom:14px;line-height:1.5;
}
.footer__desc{font-size:13px;line-height:1.8;color:var(--text-3);max-width:34ch}
.footer__title{
  font-size:12px;letter-spacing:.12em;color:var(--text-3);
  margin:0 0 16px;text-transform:uppercase;font-weight:600;
}
.footer__list{display:flex;flex-direction:column;gap:10px}
.footer__list a,
.footer__list span{font-size:14px;color:var(--text-2);transition:color .2s ease-out,transform .2s ease-out}
.footer__list a:hover{color:var(--brand);transform:translateX(2px)}
.footer__bottom{border-top:1px solid var(--line);padding:22px 0 28px}
.footer__bottom-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer__bottom-inner p{font-size:13px;color:var(--text-3)}

/* ---------- 回到顶部 ---------- */
.backtop{
  position:fixed;right:24px;bottom:24px;z-index:75;
  width:48px;height:48px;border-radius:50%;
  background:var(--brand);color:#0A1310;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;
  opacity:0;pointer-events:none;
  transition:opacity .25s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
  box-shadow:0 10px 24px rgba(18,214,160,0.24);
}
.backtop.is-visible{opacity:1;pointer-events:auto}
.backtop:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(18,214,160,0.3)}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap;gap:16px}
  .sidebar .side-card{flex:1 1 260px}
  .article-body-card{max-width:none}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media screen and (max-width:991px){
  :root{--sidenav-w:88px}
  .brand__text{display:none}
  .sidenav__brand{justify-content:center;padding:0}
  .nav-group{text-align:center;padding-left:0;font-size:10px;letter-spacing:.06em}
  .nav-link{justify-content:center;padding:0;height:48px}
  .nav-link span{display:none}
  .nav-link.is-active::before{left:0;top:12px;bottom:12px}
  .sidenav__foot{padding:12px 10px 16px}
  .sidenav__foot .btn{padding:10px 12px;font-size:13px}
  .sidenav__hint{display:none}
  .section{padding-top:64px}
  .cta-band{margin-top:64px}
  .stat-strip{margin-top:64px}
  .footer{margin-top:64px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:24px}
}
@media screen and (max-width:767px){
  body{font-size:15px}
  .sidenav{display:none}
  .page{margin-left:0}
  .topbar{display:flex}
  .container{padding:0 16px}
  .main{padding-top:16px}
  .article-head{padding:24px 0 22px}
  .article-head h1{font-size:24px;line-height:1.4;max-width:none}
  .article-meta{gap:10px;margin-top:14px}
  .breadcrumb{font-size:12px;margin-bottom:16px}
  .breadcrumb .current{max-width:100%;white-space:normal}
  .article-layout{padding-top:22px;gap:20px}
  .article-body-card{padding:20px;border-radius:14px}
  .article-body-card p,
  .article-body-card ul,
  .article-body-card ol{font-size:16px;line-height:1.85}
  .article-body-card h2{font-size:20px;margin:30px 0 14px}
  .article-body-card h3{font-size:17px}
  .article-body-card table{display:block;overflow-x:auto;white-space:nowrap}
  .section{padding-top:48px}
  .section__head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:20px}
  .section__head h2{font-size:22px}
  .cta-band{margin-top:48px;padding:44px 0}
  .cta-band h2{font-size:22px}
  .cta-band::before,.cta-band::after{display:none}
  .cta-band__actions .btn{width:100%}
  .stat-strip{grid-template-columns:1fr;gap:18px;padding:26px 0;margin-top:48px}
  .faq__item summary{font-size:15px;padding:14px 16px}
  .faq__answer{margin:0 16px 16px;padding-top:14px}
  .footer{margin-top:48px;padding-top:40px}
  .footer__grid{grid-template-columns:1fr;gap:26px;padding-bottom:28px}
  .footer__desc{max-width:none}
  .footer__bottom-inner{flex-direction:column;align-items:flex-start;gap:8px}
  .backtop{right:16px;bottom:16px}
  .sidebar .side-card{flex:1 1 100%}
}
@media screen and (max-width:520px){
  .related-grid > .cell{padding:0 10px 18px}
  .card-related__body{padding:16px}
  .article-body-card{padding:18px}
  .article-head h1{font-size:22px}
}

/* roulang page: category1 */
:root{
  --brand:#12D6A0;
  --brand-hover:#1FEBb2;
  --amber:#FFB03A;
  --magenta:#FF4D7D;
  --bg:#0A1310;
  --bg-alt:#0F1D19;
  --bg-card:#122420;
  --light:#F4F8F6;
  --light-text:#101E1B;
  --text:#EAF6F2;
  --text-2:#9DB8B1;
  --text-3:#6E8A83;
  --line:#1E3630;
  --line-active:rgba(18,214,160,0.4);
  --radius-lg:18px;
  --radius:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --radius-img:14px;
  --radius-badge:6px;
  --shadow-dark:0 0 0 1px rgba(18,214,160,0.12),0 12px 32px rgba(0,0,0,0.45);
  --shadow-hover:0 0 0 1px rgba(18,214,160,0.34),0 18px 40px rgba(0,0,0,0.5);
  --shadow-light:0 8px 24px rgba(10,19,16,0.08);
  --sidenav-w:240px;
  --t:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-left:var(--sidenav-w);
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t),transform var(--t);}
a:hover{color:var(--amber);}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
::selection{background:rgba(18,214,160,0.3);color:#fff;}
.skip-link{position:absolute;left:-9999px;top:8px;z-index:200;padding:10px 18px;background:var(--brand);color:#0A1310;border-radius:var(--radius-btn);font-weight:700;}
.skip-link:focus{left:16px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 左侧竖向导航 ============ */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidenav-w);
  background:var(--bg);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:80;
}
.sidenav__brand{
  display:flex;align-items:center;gap:12px;height:72px;padding:0 18px;
  border-bottom:1px solid var(--line);color:var(--text);
}
.sidenav__brand:hover{color:var(--text);}
.brand__mark{flex:0 0 40px;width:40px;height:40px;}
.brand__mark svg{width:40px;height:40px;display:block;}
.brand__text{display:flex;flex-direction:column;min-width:0;}
.brand__name{font-size:13px;font-weight:700;line-height:1.35;letter-spacing:.01em;}
.brand__sub{font-size:12px;color:var(--text-3);line-height:1.5;}
.sidenav__scroll{flex:1;overflow-y:auto;padding:8px 0 16px;}
.nav-group{
  font-size:11px;letter-spacing:.12em;color:var(--text-3);
  margin:20px 0 8px;padding:0 20px;text-transform:uppercase;
}
.nav-list{display:flex;flex-direction:column;gap:2px;}
.nav-link{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:46px;padding:0 20px;font-size:15px;color:var(--text-2);
  border-left:3px solid transparent;transition:background var(--t),color var(--t),border-color var(--t);
}
.nav-link i{font-size:17px;width:20px;text-align:center;color:inherit;}
.nav-link:hover{background:rgba(18,214,160,0.08);color:var(--brand);}
.nav-link.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(18,214,160,0.06);}
.sidenav__foot{padding:16px 18px 20px;border-top:1px solid var(--line);}
.sidenav__note{font-size:12px;color:var(--text-3);line-height:1.6;margin-top:12px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 28px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1.2;border:1px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
}
.btn--primary{background:var(--brand);color:#0A1310;border-radius:999px;}
.btn--primary:hover{background:var(--brand-hover);color:#0A1310;transform:translateY(-2px);box-shadow:0 10px 24px rgba(18,214,160,0.28);}
.btn--primary:active{transform:translateY(0);box-shadow:none;}
.btn--ghost{background:transparent;color:var(--text);border:1px solid var(--line);border-radius:999px;}
.btn--ghost:hover{color:var(--brand);border-color:var(--line-active);transform:translateY(-2px);}
.btn--block{width:100%;}
.btn--sm{min-height:40px;padding:9px 20px;font-size:14px;}

/* ============ 顶部移动导航 ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:90;height:60px;
  align-items:center;justify-content:space-between;gap:12px;padding:0 14px;
  background:rgba(10,19,16,0.92);border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.topbar__burger,.topbar__cta{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:var(--radius-input);color:var(--text);font-size:17px;
}
.topbar__burger:hover,.topbar__cta:hover{background:rgba(18,214,160,0.1);color:var(--brand);}
.topbar__brand{font-size:14px;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar__brand:hover{color:var(--brand);}
.drawer-overlay{position:fixed;inset:0;background:rgba(4,9,8,0.6);z-index:95;opacity:0;transition:opacity var(--t);}
.drawer-overlay.is-visible{opacity:1;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:88vw;max-width:360px;z-index:100;
  background:var(--bg);border-right:1px solid var(--line);
  display:flex;flex-direction:column;transform:translateX(-102%);transition:transform 240ms ease-out;
}
.drawer.is-open{transform:translateX(0);}
.drawer .nav-link{min-height:52px;font-size:16px;}
body.is-locked{overflow:hidden;}

/* ============ 页头横幅与面包屑 ============ */
.page-banner{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  padding:44px 0 56px;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,19,16,0.94) 0%,rgba(10,19,16,0.78) 48%,rgba(10,19,16,0.6) 100%);
}
.page-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.07;
  background-image:linear-gradient(rgba(18,214,160,0.6) 1px,transparent 1px),linear-gradient(90deg,rgba(18,214,160,0.6) 1px,transparent 1px);
  background-size:48px 48px;
}
.page-banner .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:var(--line);}
.breadcrumb .current{color:var(--text-2);}
.page-banner__tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:var(--radius-badge);
  background:rgba(18,214,160,0.12);color:var(--brand);margin-bottom:16px;
}
.page-banner h1{font-size:40px;line-height:1.25;font-weight:800;letter-spacing:.01em;max-width:760px;}
.page-banner__lead{margin-top:14px;font-size:15px;color:var(--text-2);max-width:720px;}
.page-banner__meta{display:flex;flex-wrap:wrap;gap:20px;margin-top:22px;font-size:13px;color:var(--text-3);}
.page-banner__meta i{color:var(--brand);margin-right:6px;}

/* ============ 板块通用 ============ */
.section{padding:88px 0;}
.section--alt{background:var(--bg-alt);}
.section--light{background:var(--light);color:var(--light-text);}
.section--light a{color:#0F9E7A;}
.section--light a:hover{color:var(--amber);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-head__title{font-size:28px;line-height:1.35;font-weight:700;}
.section-head__sub{margin-top:10px;font-size:15px;color:var(--text-2);max-width:680px;}
.section--light .section-head__sub{color:#3E5A53;}
.eyebrow{font-size:12px;letter-spacing:.14em;color:var(--brand);font-weight:700;margin-bottom:10px;}

/* ============ 栅格 ============ */
.grid{display:grid;gap:24px;}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr));}
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:32px;align-items:center;}

/* ============ 卡片 ============ */
.card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;display:flex;flex-direction:column;gap:12px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-active);box-shadow:var(--shadow-hover);}
.card__icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(18,214,160,0.1);color:var(--brand);font-size:18px;
}
.card__title{font-size:20px;font-weight:600;line-height:1.4;}
.card__text{font-size:15px;color:var(--text-2);}
.card__link{margin-top:auto;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.card__link i{transition:transform var(--t);}
.card__link:hover i{transform:translateX(4px);}
.badge{display:inline-flex;align-items:center;font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--radius-badge);line-height:1.4;}
.badge--brand{background:rgba(18,214,160,0.12);color:var(--brand);}
.badge--amber{background:rgba(255,176,58,0.12);color:var(--amber);}
.badge--magenta{background:rgba(255,77,125,0.12);color:var(--magenta);}
.card__head{display:flex;align-items:center;justify-content:space-between;gap:12px;}

.figure{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);background:var(--bg-card);}
.figure img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-img);transition:transform var(--t);}
.figure:hover img{transform:scale(1.03);}
.figure--r169{aspect-ratio:16/9;}

/* ============ 时间轴 ============ */
.timeline{position:relative;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:24px;}
.timeline::before{
  content:"";position:absolute;top:13px;left:14px;right:14px;height:2px;
  background:linear-gradient(90deg,var(--brand),rgba(18,214,160,0.18));
}
.tl-step{position:relative;padding-top:52px;}
.tl-dot{
  position:absolute;top:0;left:0;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  background:var(--brand);color:#0A1310;box-shadow:0 0 0 4px rgba(18,214,160,0.14);
}
.tl-step--pending .tl-dot{background:transparent;color:var(--text-2);border:1px solid var(--line);box-shadow:none;}
.tl-title{font-size:20px;font-weight:600;line-height:1.4;}
.tl-text{margin-top:8px;font-size:15px;color:var(--text-2);}
.tl-num{font-size:12px;letter-spacing:.1em;color:var(--text-3);font-weight:700;margin-bottom:6px;}

/* ============ 图文并排 ============ */
.split__body h3{font-size:20px;font-weight:600;margin-bottom:12px;}
.split__body p{font-size:16px;color:var(--text-2);}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);}
.check-list i{color:var(--brand);margin-top:5px;font-size:13px;}

/* 浅色阅读面板 */
.light-panel{background:#fff;border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow-light);}
.light-panel__title{font-size:28px;font-weight:700;line-height:1.35;color:var(--light-text);}
.light-panel__lead{margin-top:12px;font-size:17px;line-height:1.9;color:#3E5A53;}
.light-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;margin-top:32px;}
.light-list{display:flex;flex-direction:column;gap:18px;}
.light-list li{display:flex;gap:14px;font-size:16px;line-height:1.85;color:#22352F;}
.light-list .num{
  flex:0 0 28px;width:28px;height:28px;border-radius:8px;background:rgba(18,214,160,0.16);
  color:#0F9E7A;font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center;
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;margin-top:4px;
}
.light-note{background:#EDF5F1;border-radius:var(--radius);padding:24px;}
.light-note h3{font-size:18px;font-weight:600;color:var(--light-text);margin-bottom:10px;}
.light-note p{font-size:15px;line-height:1.85;color:#3E5A53;}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:12px;max-width:920px;}
.faq-item{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:border-color var(--t),background var(--t);
}
.faq-item:hover{background:rgba(255,255,255,0.03);border-color:var(--line-active);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 24px;cursor:pointer;font-size:16px;font-weight:600;
  list-style:none;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:400;color:var(--brand);line-height:1;
  transition:transform var(--t);
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-item[open] summary{border-bottom:1px solid var(--line);}
.faq-item__body{padding:16px 24px 22px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,rgba(18,214,160,0.14),rgba(18,214,160,0.03) 70%,transparent),var(--bg);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:80px 0;text-align:center;
}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;top:50%;width:180px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,214,160,0.55));
}
.cta-band::before{left:0;}
.cta-band::after{right:0;background:linear-gradient(270deg,transparent,rgba(18,214,160,0.55));}
.cta-band__inner{position:relative;z-index:2;max-width:680px;margin:0 auto;padding:0 24px;}
.cta-band h2{font-size:28px;font-weight:700;line-height:1.4;}
.cta-band p{margin:14px 0 28px;font-size:15px;color:var(--text-2);}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--brand);color:#0A1310;display:flex;align-items:center;justify-content:center;
  font-size:18px;z-index:120;opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t),transform var(--t),box-shadow var(--t);
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(18,214,160,0.3);color:#0A1310;}

/* ============ 页脚 ============ */
.footer{background:var(--bg);border-top:1px solid var(--line);padding:64px 0 0;}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:48px;}
.footer__logo{font-size:17px;font-weight:700;color:var(--text);margin-bottom:14px;}
.footer__desc{font-size:14px;color:var(--text-3);line-height:1.85;max-width:320px;}
.footer__title{font-size:13px;font-weight:700;color:var(--text);letter-spacing:.06em;margin-bottom:16px;}
.footer__list{display:flex;flex-direction:column;gap:12px;}
.footer__list a,.footer__list span{font-size:14px;color:var(--text-2);}
.footer__list a:hover{color:var(--brand);transform:translateX(2px);display:inline-block;}
.footer__bottom{border-top:1px solid var(--line);padding:22px 0;}
.footer__bottom-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;}
.footer__bottom p{font-size:13px;color:var(--text-3);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .grid--4{grid-template-columns:repeat(3,minmax(0,1fr));}
  .timeline{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:36px;}
  .timeline::before{display:none;}
}
@media (max-width:991px){
  body{padding-left:88px;}
  .sidenav{width:88px;}
  .brand__text{display:none;}
  .sidenav__brand{justify-content:center;padding:0;}
  .nav-group{text-align:center;padding:0;letter-spacing:.04em;}
  .nav-link{justify-content:center;padding:0;gap:0;font-size:0;}
  .nav-link i{font-size:20px;}
  .sidenav__foot .btn{padding:12px 0;font-size:0;}
  .sidenav__foot .btn i{font-size:16px;}
  .sidenav__note{display:none;}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:1fr;}
  .light-grid{grid-template-columns:1fr;}
  .page-banner h1{font-size:34px;}
  .section{padding:72px 0;}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  body{padding-left:0;}
  .sidenav{display:none;}
  .topbar{display:flex;}
  .section{padding:48px 0;}
  .container{padding:0 16px;}
  .page-banner{padding:28px 0 40px;background-position:center top;}
  .page-banner h1{font-size:28px;line-height:1.35;}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr;}
  .card{padding:16px;}
  .timeline{grid-template-columns:1fr;row-gap:0;}
  .timeline::before{display:block;top:14px;bottom:26px;left:13px;right:auto;width:2px;height:auto;
    background:repeating-linear-gradient(180deg,rgba(18,214,160,0.55) 0 6px,transparent 6px 12px);}
  .tl-step{padding:0 0 26px 48px;}
  .tl-dot{top:2px;}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:28px;}
  .section-head__title{font-size:22px;}
  .light-panel{padding:22px;}
  .light-panel__title{font-size:22px;}
  .cta-band{padding:56px 0;}
  .cta-band h2{font-size:22px;}
  .cta-band .btn{width:100%;}
  .footer__grid{grid-template-columns:1fr;padding-bottom:32px;}
  .footer__bottom-inner{flex-direction:column;align-items:flex-start;}
  .faq-item summary{padding:14px 16px;font-size:15px;}
  .faq-item__body{padding:14px 16px 18px;}
  .to-top{right:16px;bottom:16px;}
}

/* roulang page: category2 */
:root{
  --brand:#12D6A0;
  --brand-dark:#0F9E7A;
  --amber:#FFB03A;
  --magenta:#FF4D7D;
  --bg:#0A1310;
  --bg-alt:#0F1D19;
  --bg-card:#122420;
  --line:#1E3630;
  --text:#EAF6F2;
  --text-2:#9DB8B1;
  --text-3:#6E8A83;
  --light:#F4F8F6;
  --light-text:#101E1B;
  --r-lg:18px;
  --r-md:16px;
  --r-sm:14px;
  --r-btn:12px;
  --r-input:10px;
  --r-badge:6px;
  --shadow-dark:0 0 0 1px rgba(18,214,160,.12), 0 12px 32px rgba(0,0,0,.45);
  --shadow-light:0 8px 24px rgba(10,19,16,.08);
  --mono:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --nav-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,transform .2s ease;}
a:hover{color:var(--amber);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3{line-height:1.3;font-weight:700;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
::selection{background:rgba(18,214,160,.3);color:#fff;}

/* ============ 布局骨架 ============ */
.layout{margin-left:var(--nav-w);min-height:100vh;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--alt{background:var(--bg-alt);}
.section--deep{background:var(--bg-card);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-head__text{max-width:720px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--brand);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);display:inline-block;}
.section-title{font-size:28px;font-weight:700;letter-spacing:.01em;}
.section-sub{margin-top:12px;color:var(--text-2);font-size:15px;}

/* ============ 左侧竖导航 ============ */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--bg);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:70;
}
.sidenav__brand{
  display:flex;align-items:center;gap:12px;
  height:72px;padding:0 18px;border-bottom:1px solid var(--line);
  flex:0 0 auto;
}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(150deg,rgba(18,214,160,.22),rgba(18,214,160,0));
  border:1px solid rgba(18,214,160,.4);
  display:flex;align-items:center;justify-content:center;
}
.brand-mark span{display:block;width:16px;height:2px;background:var(--brand);border-radius:2px;box-shadow:0 -5px 0 var(--brand),0 5px 0 rgba(18,214,160,.5);}
.brand-text{min-width:0;}
.brand-text__main{font-size:14px;font-weight:700;line-height:1.35;color:var(--text);}
.brand-text__sub{font-size:12px;color:var(--text-3);line-height:1.4;}
.sidenav__body{flex:1 1 auto;overflow-y:auto;padding:10px 0 20px;}
.nav-group{
  font-size:11px;letter-spacing:.12em;color:var(--text-3);
  padding:20px 20px 8px;text-transform:uppercase;margin:0;
}
.nav-list{margin:0;padding:0;list-style:none;}
.nav-link{
  position:relative;display:flex;align-items:center;gap:12px;
  height:46px;padding:0 20px;font-size:15px;color:var(--text-2);
  border-left:3px solid transparent;
}
.nav-link i{font-size:16px;width:20px;text-align:center;color:inherit;}
.nav-link:hover{background:rgba(18,214,160,.08);color:var(--brand);}
.nav-link.is-active{
  color:var(--brand);border-left-color:var(--brand);
  background:rgba(18,214,160,.06);
}
.sidenav__foot{flex:0 0 auto;padding:16px;border-top:1px solid var(--line);}
.sidenav__foot .btn{width:100%;justify-content:center;}
.sidenav__note{margin-top:10px;font-size:12px;color:var(--text-3);line-height:1.6;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 28px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn--primary{background:var(--brand);color:#0A1310;}
.btn--primary:hover{background:#22E1AE;color:#0A1310;transform:translateY(-2px);box-shadow:0 10px 24px rgba(18,214,160,.28);}
.btn--primary:active{transform:translateY(0);box-shadow:none;}
.btn--ghost{background:transparent;color:var(--text);border-color:var(--line);}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn--ghost:active{transform:translateY(0);}
.btn--sm{min-height:38px;padding:8px 18px;font-size:14px;border-radius:var(--r-btn);}
.btn--block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand);}
.link-arrow i{transition:transform .2s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 顶部移动导航 ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:80;
  height:60px;align-items:center;justify-content:space-between;
  padding:0 16px;background:rgba(10,19,16,.92);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.topbar__brand{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:700;color:var(--text);}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:transparent;color:var(--text);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);}
.drawer{
  position:fixed;inset:0;z-index:120;background:var(--bg);
  padding:20px 0 28px;display:flex;flex-direction:column;
  transform:translateX(-100%);transition:transform .28s ease;
  width:88vw;max-width:360px;border-right:1px solid var(--line);
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 16px;border-bottom:1px solid var(--line);}
.drawer__title{font-size:14px;font-weight:700;}
.drawer__body{flex:1;overflow-y:auto;padding-top:8px;}
.drawer .nav-link{height:52px;font-size:16px;}
.drawer__foot{padding:16px 20px 0;border-top:1px solid var(--line);}
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:110;opacity:0;visibility:hidden;transition:opacity .28s ease;}
.overlay.is-open{opacity:1;visibility:visible;}
body.no-scroll{overflow:hidden;}

/* ============ 面包屑 ============ */
.crumbs{padding:24px 0 0;font-size:13px;color:var(--text-3);}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li + li::before{content:"/";color:var(--line);}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--brand);}
.crumbs [aria-current="page"]{color:var(--text-3);}

/* ============ 分类页头 + 横幅 ============ */
.page-head{padding:28px 0 0;}
.page-head__inner{max-width:860px;}
.page-head h1{font-size:40px;font-weight:800;letter-spacing:.01em;}
.page-head__lead{margin-top:16px;font-size:15px;color:var(--text-2);max-width:720px;}
.page-head__meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.page-banner{
  margin-top:36px;height:240px;border-radius:var(--r-lg);
  background-image:linear-gradient(90deg,rgba(10,19,16,.86),rgba(10,19,16,.5)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border:1px solid var(--line);
  display:flex;align-items:center;
  position:relative;overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:36px 36px;pointer-events:none;
}
.page-banner__box{position:relative;z-index:2;padding:0 40px;max-width:620px;}
.page-banner__box p{font-size:15px;color:var(--text-2);margin-top:10px;}
.page-banner__tag{
  display:inline-block;font-size:12px;color:var(--brand);
  background:rgba(18,214,160,.12);border-radius:var(--r-badge);
  padding:4px 10px;margin-bottom:12px;
}

/* ============ 标签 / 徽章 ============ */
.tag{display:inline-block;font-size:12px;padding:4px 10px;border-radius:var(--r-badge);line-height:1.6;}
.tag--brand{color:var(--brand);background:rgba(18,214,160,.12);}
.tag--amber{color:var(--amber);background:rgba(255,176,58,.12);}
.tag--magenta{color:var(--magenta);background:rgba(255,77,125,.12);}

/* ============ 双栏图文交替 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split + .split{margin-top:72px;}
.split__media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-dark);
}
.split__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease;}
.split__media:hover img{transform:scale(1.03);}
.split__body h2{font-size:26px;margin-bottom:16px;}
.split__body p{color:var(--text-2);font-size:16px;}
.split__body p + p{margin-top:14px;}
.split--reverse .split__media{order:2;}
.split--reverse .split__body{order:1;}
.split__points{margin-top:22px;display:grid;gap:12px;}
.split__points li{display:flex;gap:12px;font-size:15px;color:var(--text-2);}
.split__points i{color:var(--brand);margin-top:7px;font-size:14px;}

/* ============ 卡片网格 ============ */
.grid{display:grid;gap:24px;}
.grid--3{grid-template-columns:repeat(3,1fr);}
.grid--2{grid-template-columns:repeat(2,1fr);}
.card{
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--r-md);padding:24px;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.card:hover{transform:translateY(-4px);border-color:rgba(18,214,160,.4);box-shadow:var(--shadow-dark);}
.card__icon{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(18,214,160,.3);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
  background:rgba(18,214,160,.07);margin-bottom:18px;font-size:18px;
}
.card h3{font-size:20px;margin-bottom:10px;}
.card p{color:var(--text-2);font-size:15px;}
.card__foot{margin-top:18px;}

/* ============ 对照表 ============ */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-md);background:var(--bg-card);}
table.compare{width:100%;border-collapse:collapse;min-width:640px;}
table.compare th,table.compare td{padding:16px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--line);}
table.compare thead th{font-size:13px;letter-spacing:.08em;color:var(--text-3);background:rgba(255,255,255,.02);font-weight:600;}
table.compare tbody tr:last-child td{border-bottom:none;}
table.compare tbody tr:hover{background:rgba(18,214,160,.05);}
table.compare td:first-child{color:var(--text);font-weight:600;}
table.compare td{color:var(--text-2);}

/* ============ 清单 ============ */
.checklist{display:grid;gap:14px;}
.checklist li{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--r-sm);padding:16px 18px;font-size:15px;color:var(--text-2);
}
.checklist i{color:var(--brand);margin-top:6px;}
.checklist strong{color:var(--text);font-weight:600;}

/* ============ 表单 ============ */
.form-card{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--shadow-dark);
}
.form-card h3{font-size:20px;margin-bottom:8px;}
.form-card > p{color:var(--text-2);font-size:14px;margin-bottom:24px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;
  background:var(--bg-alt);background:rgba(255,255,255,.02);
  border:1px solid var(--line);border-radius:var(--r-input);color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:112px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,214,160,.15);
}
.field--error input,.field--error textarea{border-color:var(--magenta);}
.field__err{display:flex;align-items:center;gap:6px;margin-top:8px;font-size:13px;color:var(--magenta);}
.form-hint{font-size:13px;color:var(--text-3);margin-top:14px;line-height:1.7;}

/* ============ FAQ ============ */
.faq{display:grid;gap:12px;max-width:900px;}
.faq details{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-md);
  transition:border-color .2s ease,background .2s ease;
}
.faq details[open]{border-color:rgba(18,214,160,.4);}
.faq details:hover{background:rgba(255,255,255,.03);}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 22px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .faq-icon{
  width:28px;height:28px;flex:0 0 28px;border-radius:8px;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:12px;transition:transform .2s ease;
}
.faq details[open] summary .faq-icon{transform:rotate(180deg);}
.faq__body{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;
  padding:72px 0;text-align:center;
  background:linear-gradient(120deg,rgba(18,214,160,.14),rgba(10,19,16,.2) 55%,rgba(255,176,58,.08)),var(--bg-alt);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;top:50%;width:26%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,214,160,.6),transparent);
}
.cta-band::before{left:0;}
.cta-band::after{right:0;}
.cta-band h2{font-size:28px;}
.cta-band p{margin:14px auto 28px;max-width:620px;color:var(--text-2);font-size:15px;}

/* ============ 数据条 ============ */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;text-align:center;}
.stats__item{padding:8px 0;}
.stats__num{font-family:var(--mono);font-size:28px;font-weight:700;color:var(--brand);letter-spacing:.02em;}
.stats__label{font-size:13px;color:var(--text-3);margin-top:6px;}

/* ============ 页脚 ============ */
.footer{background:var(--bg);border-top:1px solid var(--line);padding:64px 0 0;}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
.footer__logo{font-size:17px;font-weight:700;color:var(--text);margin-bottom:14px;}
.footer__desc{font-size:14px;color:var(--text-3);line-height:1.8;}
.footer__title{font-size:13px;color:var(--text-3);letter-spacing:.08em;margin-bottom:16px;}
.footer__list li{margin-bottom:10px;}
.footer__list a,.footer__list span{font-size:14px;color:var(--text-2);}
.footer__list a{display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer__list a:hover{color:var(--brand);transform:translateX(2px);}
.footer__bottom{margin-top:48px;border-top:1px solid var(--line);padding:22px 0;}
.footer__bottom-inner{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--text-3);}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--brand);color:#0A1310;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:16px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;z-index:90;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(18,214,160,.3);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .grid--3{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  :root{--nav-w:88px;}
  .brand-text{display:none;}
  .sidenav__brand{justify-content:center;padding:0;}
  .nav-group{text-align:center;padding:20px 8px 8px;font-size:10px;}
  .nav-link{justify-content:center;padding:0;}
  .nav-link span{display:none;}
  .nav-link i{font-size:18px;}
  .sidenav__foot{padding:12px 10px;}
  .sidenav__foot .btn span{display:none;}
  .sidenav__note{display:none;}
  .split{gap:36px;}
  .section{padding:72px 0;}
}
@media (max-width:767px){
  .sidenav{display:none;}
  .layout{margin-left:0;}
  .topbar{display:flex;}
  .section{padding:48px 0;}
  .container{padding:0 16px;}
  .page-head h1{font-size:28px;}
  .section-title{font-size:22px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .split{grid-template-columns:1fr;gap:24px;}
  .split + .split{margin-top:44px;}
  .split--reverse .split__media{order:0;}
  .split--reverse .split__body{order:0;}
  .split__body h2{font-size:22px;}
  .grid--3,.grid--2{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;gap:16px;}
  .card{padding:16px;}
  .page-banner{height:200px;margin-top:24px;}
  .page-banner__box{padding:0 20px;}
  .form-card{padding:20px;}
  .cta-band{padding:52px 0;}
  .cta-band h2{font-size:22px;}
  .footer__grid{grid-template-columns:1fr;gap:28px;}
  .btn{width:100%;}
  .btn--sm{width:auto;}
  .footer__bottom-inner{flex-direction:column;}
}
@media (max-width:520px){
  .page-head h1{font-size:26px;line-height:1.35;}
  .faq summary{font-size:15px;padding:14px 16px;}
  .faq__body{padding:0 16px 18px;}
}

/* roulang page: category3 */
:root{
  --bg:#0A1310;
  --bg-2:#0F1D19;
  --bg-3:#122420;
  --light:#F4F8F6;
  --ink:#101E1B;
  --text:#EAF6F2;
  --text-2:#9DB8B1;
  --text-3:#6E8A83;
  --line:#1E3630;
  --line-soft:rgba(30,54,48,.6);
  --brand:#12D6A0;
  --brand-dim:rgba(18,214,160,.12);
  --brand-line:rgba(18,214,160,.4);
  --amber:#FFB03A;
  --amber-dim:rgba(255,176,58,.12);
  --magenta:#FF4D7D;
  --magenta-dim:rgba(255,77,125,.12);
  --r-xl:18px;
  --r-md:16px;
  --r-btn:12px;
  --r-sm:10px;
  --r-badge:6px;
  --shadow-deep:0 0 0 1px rgba(18,214,160,.12), 0 12px 32px rgba(0,0,0,.45);
  --shadow-light:0 8px 24px rgba(10,19,16,.08);
  --ease:200ms ease-out;
  --nav-w:240px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::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;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border-radius:14px;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease);}
a:hover{color:var(--amber);}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
table{border-collapse:collapse;width:100%;}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--brand);color:#0A1310;padding:10px 18px;border-radius:0 0 12px 0;font-weight:700;
}
.skip-link:focus{left:0;}

/* ============ 左侧竖向导航 ============ */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--bg);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  z-index:80;
  overflow-y:auto;
  overscroll-behavior:contain;
}
.brand{
  display:flex;align-items:center;gap:12px;
  min-height:72px;padding:16px 20px;
  border-bottom:1px solid var(--line);
  color:var(--text);
  flex:0 0 auto;
}
.brand:hover{color:var(--text);}
.brand__mark{
  width:40px;height:40px;flex:0 0 40px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(160deg,rgba(18,214,160,.16),rgba(18,214,160,.02));
  border:1px solid var(--brand-line);
}
.brand__mark svg{width:26px;height:26px;display:block;}
.brand__txt{display:flex;flex-direction:column;line-height:1.35;min-width:0;}
.brand__txt strong{font-size:15px;font-weight:700;letter-spacing:.01em;color:var(--text);}
.brand__txt em{font-size:12px;font-style:normal;color:var(--text-3);margin-top:2px;}

.nav-group{
  font-size:11px;letter-spacing:.12em;color:var(--text-3);
  margin:20px 20px 8px;text-transform:uppercase;
}
.nav-list{display:flex;flex-direction:column;gap:2px;padding:0 12px;}
.nav-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  min-height:46px;padding:0 14px 0 20px;
  border-radius:10px;
  color:var(--text-2);
  font-size:15px;
  transition:background-color var(--ease),color var(--ease);
}
.nav-link i{width:20px;font-size:16px;text-align:center;color:inherit;}
.nav-link span{display:block;line-height:1.4;}
.nav-link:hover{background:rgba(18,214,160,.08);color:var(--brand);}
.nav-link:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
.nav-link.is-active{color:var(--brand);background:rgba(18,214,160,.08);font-weight:600;}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:2px;background:var(--brand);
}
.sidenav__foot{
  margin-top:auto;padding:20px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:12px;flex:0 0 auto;
}
.sidenav__cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;border-radius:999px;
  background:var(--brand);color:#0A1310;font-weight:700;font-size:15px;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.sidenav__cta:hover{color:#0A1310;background:#22e0ac;transform:translateY(-2px);box-shadow:0 10px 24px rgba(18,214,160,.28);}
.sidenav__note{font-size:12px;color:var(--text-3);line-height:1.6;}

/* ============ 移动端顶部导航 ============ */
.topbar{
  display:none;
  position:sticky;top:0;z-index:90;
  height:60px;align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(10,19,16,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar__burger{
  width:44px;height:44px;border-radius:10px;
  display:grid;place-items:center;font-size:18px;color:var(--text);
}
.topbar__burger:hover{background:rgba(18,214,160,.1);color:var(--brand);}
.topbar__brand{
  display:flex;align-items:center;gap:8px;color:var(--text);font-size:15px;font-weight:700;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:56vw;
}
.topbar__brand:hover{color:var(--text);}
.topbar__brand .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(18,214,160,.9);flex:0 0 8px;}
.topbar__cta{
  width:44px;height:44px;border-radius:999px;
  display:grid;place-items:center;
  background:var(--brand);color:#0A1310;font-size:16px;
}
.topbar__cta:hover{color:#0A1310;background:#22e0ac;}

.drawer{
  position:fixed;inset:0;z-index:120;
  background:var(--bg);
  width:92vw;max-width:420px;
  transform:translateX(-102%);
  transition:transform 260ms ease-out;
  display:flex;flex-direction:column;
  border-right:1px solid var(--line);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{
  display:flex;align-items:center;justify-content:space-between;
  min-height:60px;padding:0 16px;border-bottom:1px solid var(--line);
}
.drawer__title{font-size:15px;font-weight:700;color:var(--text);}
.drawer__close{width:44px;height:44px;border-radius:10px;display:grid;place-items:center;font-size:18px;color:var(--text-2);}
.drawer__close:hover{background:rgba(18,214,160,.1);color:var(--brand);}
.drawer .nav-list{padding:12px;}
.drawer .nav-link{min-height:52px;}
.drawer__foot{margin-top:auto;padding:20px;border-top:1px solid var(--line);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(5,10,8,.6);z-index:110;
  opacity:0;visibility:hidden;transition:opacity 220ms ease-out,visibility 220ms;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 主体 ============ */
.shell{margin-left:var(--nav-w);}

.crumb-bar{border-bottom:1px solid var(--line);background:var(--bg);}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
  padding:16px 0;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb__sep{color:var(--text-3);}
.crumb [aria-current="page"]{color:var(--text-3);}

.page-hero{
  position:relative;overflow:hidden;
  display:flex;align-items:flex-end;
  min-height:250px;
  border-bottom:1px solid var(--line);
}
.page-hero__bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
}
.page-hero__bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(10,19,16,.95) 0%,rgba(10,19,16,.82) 42%,rgba(10,19,16,.58) 100%),
    repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 64px);
}
.page-hero__inner{position:relative;z-index:2;padding:56px 0 44px;max-width:760px;}
.page-hero h1{
  font-size:40px;line-height:1.1;font-weight:800;letter-spacing:-.01em;
  margin:14px 0 12px;
}
.page-hero__sub{font-size:15px;color:var(--text-2);line-height:1.8;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:6px 10px;border-radius:var(--r-badge);
  font-weight:600;letter-spacing:.02em;
}
.badge--brand{background:var(--brand-dim);color:var(--brand);}
.badge--amber{background:var(--amber-dim);color:var(--amber);}
.badge--magenta{background:var(--magenta-dim);color:var(--magenta);}

.section{padding:88px 0;}
.section--alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--panel{background:var(--bg-3);}
.section__head{max-width:760px;margin-bottom:40px;}
.section__title{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.005em;}
.section__sub{margin-top:14px;font-size:15px;color:var(--text-2);}
.section__head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand);
  text-underline-offset:4px;
}
.link-arrow i{font-size:12px;transition:transform var(--ease);}
.link-arrow:hover{color:var(--amber);}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 28px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease);
  text-align:center;
}
.btn--primary{background:var(--brand);color:#0A1310;border-radius:999px;}
.btn--primary:hover{background:#22e0ac;color:#0A1310;transform:translateY(-2px);box-shadow:0 10px 24px rgba(18,214,160,.28);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;color:var(--text);border-color:var(--line);border-radius:999px;}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(18,214,160,.06);}
.btn:focus-visible{outline:2px solid var(--amber);outline-offset:3px;}

/* ============ 数据表 ============ */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--bg-3);
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
.data-table{min-width:720px;font-size:15px;}
.data-table thead th{
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  font-size:13px;font-weight:600;letter-spacing:.04em;
  text-align:left;
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.data-table tbody td{
  padding:18px 20px;
  border-bottom:1px solid var(--line-soft);
  color:var(--text-2);
  vertical-align:top;
  line-height:1.75;
}
.data-table tbody tr:last-child td{border-bottom:0;}
.data-table tbody tr:hover td{background:rgba(18,214,160,.04);}
.data-table td:first-child{color:var(--text);font-weight:600;}
.data-table td:last-child{color:var(--text);}
.table-hint{margin-top:14px;font-size:13px;color:var(--text-3);}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.dev-card{
  background:var(--bg-3);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.dev-card:hover{transform:translateY(-4px);border-color:var(--brand-line);box-shadow:var(--shadow-deep);}
.dev-card__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0C1A16;}
.dev-card__media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--ease);}
.dev-card:hover .dev-card__media img{transform:scale(1.03);}
.dev-card__body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.dev-card__title{font-size:20px;line-height:1.4;font-weight:600;}
.dev-card__text{font-size:15px;color:var(--text-2);line-height:1.8;}
.dev-card__list{display:flex;flex-direction:column;gap:8px;margin-top:auto;padding-top:6px;}
.dev-card__list li{
  position:relative;padding-left:18px;font-size:14px;color:var(--text-2);
}
.dev-card__list li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;background:var(--brand);
}

/* ============ 时间轴 ============ */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.timeline__item{
  position:relative;
  background:var(--bg-3);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:38px 22px 24px;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.timeline__item:hover{transform:translateY(-4px);border-color:var(--brand-line);box-shadow:var(--shadow-deep);}
.timeline__dot{
  position:absolute;top:-14px;left:22px;
  width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;
  font-family:var(--mono);font-size:13px;font-weight:700;
  background:var(--brand);color:#0A1310;
  box-shadow:0 0 0 4px rgba(18,214,160,.14);
}
.timeline__item:nth-child(2) .timeline__dot{background:rgba(18,214,160,.18);color:var(--brand);box-shadow:none;border:1px solid var(--brand-line);}
.timeline__item:nth-child(3) .timeline__dot{background:rgba(18,214,160,.12);color:var(--brand);box-shadow:none;border:1px solid var(--brand-line);}
.timeline__item:nth-child(4) .timeline__dot{background:rgba(255,176,58,.14);color:var(--amber);box-shadow:none;border:1px solid rgba(255,176,58,.4);}
.timeline__title{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:10px;}
.timeline__text{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ============ 数据条 ============ */
.statbar{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0;}
.statbar__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;text-align:center;}
.stat{display:flex;flex-direction:column;gap:6px;align-items:center;}
.stat__num{font-family:var(--mono);font-size:28px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1;}
.stat__label{font-size:13px;color:var(--text-3);}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:var(--bg-3);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:border-color var(--ease),background-color var(--ease);
}
.faq-item:hover{background:rgba(255,255,255,.03);}
.faq-item[open]{border-color:var(--brand-line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  min-height:56px;
  display:flex;align-items:center;
  padding:18px 60px 18px 24px;
  font-size:16px;font-weight:600;line-height:1.5;
  position:relative;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;
  font-size:18px;font-weight:400;line-height:1;
  color:var(--brand);background:var(--brand-dim);
  transition:transform var(--ease),background-color var(--ease),color var(--ease);
}
.faq-item[open] summary::after{content:"–";transform:translateY(-50%) rotate(180deg);background:rgba(18,214,160,.2);}
.faq-item summary:focus-visible{outline:2px solid var(--amber);outline-offset:-3px;border-radius:var(--r-md);}
.faq-item__body{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-2);}
.faq-item__body p + p{margin-top:12px;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;
  padding:76px 0;
  background:
    radial-gradient(120% 160% at 50% 0%,rgba(18,214,160,.16) 0%,rgba(18,214,160,.04) 42%,rgba(10,19,16,0) 72%),
    var(--bg-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-band__inner{position:relative;z-index:2;text-align:center;display:flex;flex-direction:column;align-items:center;gap:18px;max-width:720px;margin:0 auto;}
.cta-band h2{font-size:28px;line-height:1.3;font-weight:700;}
.cta-band p{font-size:15px;color:var(--text-2);}
.signal{
  position:absolute;top:50%;height:1px;width:180px;
  background:linear-gradient(90deg,rgba(18,214,160,0),rgba(18,214,160,.6));
}
.signal--l{left:0;transform:translateY(-50%);}
.signal--r{right:0;transform:translateY(-50%) rotate(180deg);}

/* ============ 页脚 ============ */
.footer{background:var(--bg);border-top:1px solid var(--line);padding:64px 0 0;}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer__logo{font-size:17px;font-weight:700;color:var(--text);line-height:1.5;}
.footer__desc{margin-top:14px;font-size:14px;color:var(--text-3);line-height:1.8;max-width:320px;}
.footer__title{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--text-2);margin-bottom:16px;}
.footer__list{display:flex;flex-direction:column;gap:12px;}
.footer__list a,.footer__list span{font-size:14px;color:var(--text-3);}
.footer__list a:hover{color:var(--brand);transform:translateX(2px);display:inline-block;}
.footer__bottom{margin-top:56px;border-top:1px solid var(--line);padding:22px 0;}
.footer__bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.footer__bottom-inner p{font-size:13px;color:var(--text-3);}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:100;
  width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--brand);color:#0A1310;font-size:16px;
  box-shadow:0 10px 24px rgba(18,214,160,.3);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:#22e0ac;color:#0A1310;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .timeline{grid-template-columns:repeat(2,1fr);gap:32px 24px;}
  .footer__grid{grid-template-columns:1.6fr 1fr 1fr;gap:28px;}
}

@media (max-width:991px){
  :root{--nav-w:88px;}
  .brand{justify-content:center;padding:16px 0;}
  .brand__txt{display:none;}
  .nav-group{display:none;}
  .nav-list{padding:0 16px;}
  .nav-link{justify-content:center;padding:0;gap:0;}
  .nav-link span{display:none;}
  .nav-link.is-active::before{left:-16px;}
  .sidenav__foot{padding:16px;}
  .sidenav__cta span,.sidenav__note{display:none;}
  .sidenav__cta{min-height:48px;padding:0;}
  .page-hero{min-height:220px;}
  .page-hero h1{font-size:34px;}
  .section{padding:64px 0;}
  .footer__grid{grid-template-columns:1fr 1fr;}
}

@media (max-width:767px){
  .sidenav{display:none;}
  .topbar{display:flex;}
  .shell{margin-left:0;}
  .section{padding:48px 0;}
  .container{padding:0 16px;}
  .page-hero{min-height:200px;}
  .page-hero__inner{padding:36px 0 30px;}
  .page-hero h1{font-size:28px;line-height:1.25;}
  .section__title{font-size:22px;}
  .section__head{margin-bottom:28px;}
  .section__head--row{flex-direction:column;align-items:flex-start;gap:12px;}
  .card-grid{grid-template-columns:1fr;}
  .dev-card__body{padding:16px;}
  .timeline{grid-template-columns:1fr;gap:28px;}
  .timeline__dot{position:static;margin-bottom:14px;box-shadow:none;}
  .timeline__item{padding:22px 16px;}
  .statbar__grid{grid-template-columns:1fr;gap:28px;}
  .faq-item summary{font-size:15px;padding:16px 56px 16px 16px;}
  .faq-item__body{padding:0 16px 18px;}
  .cta-band{padding:52px 0;}
  .cta-band h2{font-size:22px;}
  .signal{display:none;}
  .btn{width:100%;}
  .footer{padding:44px 0 0;}
  .footer__grid{grid-template-columns:1fr;gap:28px;}
  .footer__bottom{margin-top:32px;}
  .footer__bottom-inner{flex-direction:column;align-items:flex-start;}
  .footer__bottom-inner p{font-size:12px;}
  .to-top{right:16px;bottom:16px;width:44px;height:44px;}
}

@media (max-width:520px){
  .page-hero h1{font-size:26px;}
  .stat__num{font-size:24px;}
}