/* roulang page: index */
:root{
  --ink:#12312B;
  --accent:#C8F135;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --text:#1B211E;
  --muted:#5A6560;
  --line:#E4E1D8;
  --warn:#E4572E;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-sm:0 1px 2px rgba(18,49,43,.06);
  --shadow-hover:0 12px 28px -12px rgba(18,49,43,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:68px;
}
*,*::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:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;border-radius:var(--radius-img);border:1px solid var(--line);object-fit:cover}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:64px 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
h1{font-size:clamp(34px,5vw,60px);font-weight:800;line-height:1.22;letter-spacing:-.01em}
h2{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.3}
h3{font-size:18px;font-weight:600;line-height:1.5}
.lead{color:var(--muted);font-size:17px;line-height:1.85;max-width:62ch}
.muted{color:var(--muted)}
.small{font-size:13.5px;line-height:1.7}
.mono{font-variant-numeric:tabular-nums;letter-spacing:.02em}
.num-label{font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:var(--radius-btn);font-size:15.5px;font-weight:600;border:1px solid transparent;transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--accent);color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--accent);background:var(--bg)}
.btn-light{background:var(--accent);color:var(--ink)}
.btn-light:hover{background:#fff;color:var(--ink);transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn-outline-light:hover{border-color:var(--accent);color:var(--accent)}
.text-link{position:relative;font-weight:600;color:var(--ink);padding-bottom:3px}
.text-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
.text-link:hover::after{transform:scaleX(1)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease)}
.site-header.is-stuck{box-shadow:0 2px 12px rgba(0,0,0,.05)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.005em;white-space:nowrap}
.logo-mark{width:34px;height:34px;border-radius:9px;background:var(--ink);display:grid;place-items:center;flex:none}
.logo-mark svg{width:19px;height:19px}
.main-nav{display:none;align-items:center;gap:22px;margin-left:12px}
.main-nav a{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:6px 0;transition:color .2s var(--ease)}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.main-nav a.active{font-weight:600;color:var(--ink)}
.nav-right{display:none;align-items:center;gap:14px;margin-left:auto}
.search-form{position:relative}
.search-form input{width:230px;height:42px;padding:0 40px 0 16px;border-radius:999px;background:var(--bg);border:1px solid var(--line);font-size:14.5px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease)}
.search-form input::placeholder{color:var(--muted)}
.search-form input:focus{outline:none;background:#fff;border-color:var(--accent);box-shadow:0 0 0 2px rgba(200,241,53,.85)}
.search-form .search-icon{position:absolute;right:14px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--muted);pointer-events:none}
.nav-toggle{margin-left:auto;width:44px;height:44px;display:grid;place-items:center;border-radius:var(--radius-btn);border:1px solid var(--line);background:var(--surface)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:background .2s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:transform .24s var(--ease)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{position:fixed;inset:0;z-index:80;display:none}
.mobile-drawer.open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(18,49,43,.45)}
.drawer-panel{position:absolute;top:0;right:0;width:min(360px,88vw);height:100%;background:var(--surface);padding:22px;overflow-y:auto;display:flex;flex-direction:column;gap:22px;transform:translateX(12px);animation:drawerIn .26s var(--ease) forwards}
@keyframes drawerIn{to{transform:translateX(0)}}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:40px;height:40px;border-radius:var(--radius-btn);border:1px solid var(--line);display:grid;place-items:center;font-size:20px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-nav a{padding:13px 4px;font-size:16px;font-weight:500;border-bottom:1px solid var(--line)}
.drawer-nav a.active{font-weight:700;color:var(--ink);border-left:3px solid var(--accent);padding-left:12px}
.drawer-actions{display:flex;flex-direction:column;gap:12px}
.drawer-actions .btn{width:100%}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--ink);color:#fff;isolation:isolate}
.hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;transform:scale(1.0);animation:heroZoom 8s var(--ease) forwards;z-index:-2}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(18,49,43,.94) 0%,rgba(18,49,43,.86) 45%,rgba(18,49,43,.62) 100%);z-index:-1}
@keyframes heroZoom{to{transform:scale(1.04)}}
.hero-inner{padding:76px 0 62px;max-width:780px}
.hero h1{color:#fff}
.hero .hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:18px}
.hero-kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}
.hero .sub{margin-top:20px;font-size:17.5px;line-height:1.9;color:rgba(255,255,255,.82);max-width:60ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-strip{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.18)}
.hero-strip li{position:relative;font-size:14px;color:rgba(255,255,255,.78);padding-left:16px}
.hero-strip li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:2px;height:14px;background:var(--accent)}
.anim-line{opacity:0;transform:translateY(12px);animation:riseIn .6s var(--ease) forwards}
.anim-line.d1{animation-delay:.06s}
.anim-line.d2{animation-delay:.18s}
.anim-line.d3{animation-delay:.3s}
.anim-line.d4{animation-delay:.42s}
@keyframes riseIn{to{opacity:1;transform:translateY(0)}}

/* ---------- 痛点 ---------- */
.pain-grid{display:grid;gap:36px}
.pain-list{display:grid;gap:2px}
.pain-item{display:flex;gap:20px;padding:22px 4px;border-bottom:1px solid var(--line);transition:background-color .22s var(--ease),transform .22s var(--ease)}
.pain-item:hover{background:var(--surface);transform:translateX(2px)}
.pain-no{font-size:26px;font-weight:700;line-height:1;color:var(--accent);-webkit-text-stroke:.6px var(--ink);font-variant-numeric:tabular-nums;min-width:52px}
.pain-item h3{margin-bottom:6px}
.pain-item p{color:var(--muted);font-size:15.5px}

/* ---------- 解决方案 ---------- */
.solution{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.solution-grid{display:grid;gap:36px;align-items:center}
.solution-figure{position:relative}
.solution-figure img{width:100%;aspect-ratio:4/3;box-shadow:var(--shadow-sm)}
.solution-tag{position:absolute;left:18px;bottom:18px;background:var(--ink);color:#fff;font-size:12.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;padding:8px 14px;border-radius:999px}
.check-list{display:grid;gap:18px;margin-top:26px}
.check-list li{display:flex;gap:14px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-mark{flex:none;width:26px;height:26px;border-radius:8px;background:var(--accent);color:var(--ink);display:grid;place-items:center;font-size:13px;font-weight:700;margin-top:4px}
.check-list h3{margin-bottom:4px}
.check-list p{color:var(--muted);font-size:15.5px}

/* ---------- 成果 ---------- */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;margin-bottom:44px}
.stat{background:var(--surface);padding:24px 22px}
.stat b{display:block;font-size:clamp(26px,3.4vw,38px);font-weight:700;line-height:1.1;color:var(--ink);font-variant-numeric:tabular-nums}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--muted)}
.timeline{border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--surface)}
.timeline li{display:grid;grid-template-columns:120px 1fr;gap:20px;padding:20px 24px;border-bottom:1px solid var(--line);transition:background-color .22s var(--ease)}
.timeline li:nth-child(odd){background:rgba(246,243,236,.7)}
.timeline li:last-child{border-bottom:0}
.timeline li:hover{background:var(--bg)}
.timeline .t-when{font-size:13px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding-top:4px}
.timeline h3{margin-bottom:6px}
.timeline p{color:var(--muted);font-size:15.5px}

/* ---------- 证言 ---------- */
.quotes{display:grid;gap:24px}
.quote-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-sm);transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease)}
.quote-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(200,241,53,.65)}
.quote-mark{font-size:44px;line-height:1;color:var(--accent);-webkit-text-stroke:.5px var(--ink);font-weight:700;margin-bottom:10px}
.quote-card blockquote{font-size:16.5px;line-height:1.9;color:var(--text)}
.quote-user{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.avatar{width:44px;height:44px;border-radius:50%;flex:none;display:grid;place-items:center;font-weight:700;font-size:15px;background:var(--ink);color:var(--accent);border:0}
.quote-user .u-name{font-weight:600;font-size:15px}
.quote-user .u-role{font-size:13px;color:var(--muted)}

/* ---------- 资讯（CMS） ---------- */
.news{background:var(--surface);border-top:1px solid var(--line)}
.cms-list{display:grid;gap:20px}
.cms-lead{display:grid;gap:22px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;padding:22px;transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease)}
.cms-lead:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(200,241,53,.65)}
.cms-lead img{width:100%;aspect-ratio:16/10}
.cms-lead h3{font-size:clamp(19px,2.2vw,24px);font-weight:700;line-height:1.45;margin:12px 0 10px}
.cms-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-sm);transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);display:flex;flex-direction:column;gap:12px}
.cms-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(200,241,53,.65)}
.cms-item img{width:100%;aspect-ratio:16/10}
.cms-item h3{font-size:17.5px}
.cms-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:rgba(200,241,53,.35);color:var(--ink);font-size:12.5px;font-weight:600;letter-spacing:.04em}
.badge-warn{background:rgba(228,87,46,.12);color:var(--warn)}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-excerpt{color:var(--muted);font-size:15px;line-height:1.8}
.cms-grid{display:grid;gap:20px}
.cms-empty{display:flex;flex-direction:column;align-items:center;gap:14px;padding:38px 24px;background:var(--bg);border:1px dashed var(--line);border-radius:var(--radius-card);text-align:center;color:var(--muted)}
.cms-empty svg{width:34px;height:34px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);margin-bottom:14px;overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
.faq-item[open]{border-color:rgba(200,241,53,.75);box-shadow:var(--shadow-sm)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;font-size:16.5px;font-weight:600;line-height:1.8}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{flex:none;width:24px;height:24px;position:relative;transition:transform .2s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--ink);transform:translate(-50%,-50%)}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item[open] .faq-icon{transform:rotate(90deg)}
.faq-item[open] .faq-icon::after{opacity:0}
.faq-body{padding:0 24px 22px;border-left:2px solid var(--accent);margin-left:24px;padding-left:20px;color:var(--muted);font-size:15.8px;line-height:1.9}

/* ---------- CTA ---------- */
.cta{background:var(--ink);color:#fff;padding:72px 0}
.cta h2{color:#fff;max-width:22ch}
.cta .cta-sub{margin-top:16px;color:rgba(255,255,255,.78);max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 0;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;gap:36px;padding-bottom:44px}
.footer-brand .logo{color:#fff}
.footer-brand .logo-mark{background:var(--accent)}
.footer-brand .logo-mark svg path{fill:var(--ink)}
.footer-desc{margin-top:16px;font-size:15px;line-height:1.9;color:rgba(255,255,255,.68);max-width:38ch}
.footer-col h4{font-size:14px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:#fff;margin-bottom:16px}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:15px;color:rgba(255,255,255,.72);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-contact p{font-size:15px;margin-bottom:11px;color:rgba(255,255,255,.72)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;font-size:13.5px;color:rgba(255,255,255,.6)}
.footer-bottom .back-top{color:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.24);border-radius:999px;padding:8px 16px;transition:border-color .2s var(--ease),color .2s var(--ease)}
.footer-bottom .back-top:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .container{padding:0 28px}
  .cms-grid{grid-template-columns:repeat(2,1fr)}
  .quotes{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(4,1fr)}
  .cms-lead{grid-template-columns:1.1fr 1fr;align-items:center;padding:24px}
  .cms-lead img{aspect-ratio:16/10;height:100%}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:768px){
  .section{padding:80px 0}
  .hero-inner{padding:96px 0 78px}
  .pain-grid{grid-template-columns:minmax(280px,1fr) 1.35fr;gap:52px;align-items:start}
  .solution-grid{grid-template-columns:1fr 1fr;gap:52px}
}
@media (min-width:1024px){
  .container{padding:0 32px}
  .main-nav{display:flex}
  .nav-right{display:flex}
  .nav-toggle{display:none}
  .section{padding:104px 0}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}
  .quotes .quote-card:nth-child(2){transform:translateY(28px)}
  .quotes .quote-card:nth-child(2):hover{transform:translateY(26px)}
}
@media (min-width:1440px){
  .container{max-width:1280px}
}
@media (max-width:1023px){
  .hero-strip{margin-top:34px}
}
@media (max-width:639px){
  body{font-size:16px}
  .section{padding:56px 0}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .timeline li{grid-template-columns:1fr;gap:6px}
  .pain-no{font-size:22px;min-width:42px}
  .quote-card{padding:22px}
  .cms-lead,.cms-item{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .anim-line{opacity:1;transform:none}
  .hero::before{transform:none}
}

/* roulang page: article */
:root{
    --ink:#12312B;
    --accent:#C8F135;
    --bg:#F6F3EC;
    --surface:#FFFFFF;
    --text:#1B211E;
    --muted:#5A6560;
    --line:#E4E1D8;
    --warn:#E4572E;
    --radius-card:16px;
    --radius-btn:10px;
    --radius-img:14px;
    --shadow-sm:0 1px 2px rgba(18,49,43,.06);
    --shadow-hover:0 12px 28px -12px rgba(18,49,43,.28);
    --ease:cubic-bezier(.22,.61,.36,1);
    --font-cn:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  }

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

  .site-body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-cn);
    font-size:17px;
    line-height:1.85;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }

  .site-body img{max-width:100%;display:block;}
  .site-body a{color:inherit;text-decoration:none;}
  .site-body button{font-family:inherit;}

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

  .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;
  }

  /* ---------- Header / Nav ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    transition:box-shadow .24s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:0 2px 12px rgba(0,0,0,.05);}

  .nav-wrap{
    display:flex;
    align-items:center;
    gap:24px;
    min-height:70px;
  }

  .logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-weight:800;
    font-size:18px;
    color:var(--ink);
    letter-spacing:-.01em;
    white-space:nowrap;
  }
  .logo-mark{
    width:34px;height:34px;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--ink);
    border-radius:10px;
    flex:none;
  }
  .logo-mark svg{width:22px;height:22px;}

  .main-nav{
    display:flex;
    align-items:center;
    gap:26px;
    margin-left:8px;
  }
  .main-nav a{
    position:relative;
    font-size:15px;
    font-weight:500;
    color:var(--text);
    padding:6px 0;
    transition:color .2s var(--ease);
  }
  .main-nav a::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:-2px;
    height:2px;
    background:var(--accent);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .24s var(--ease);
  }
  .main-nav a:hover{color:var(--ink);}
  .main-nav a:hover::after,
  .main-nav a.active::after{transform:scaleX(1);}
  .main-nav a.active{font-weight:600;color:var(--ink);}

  .nav-right{
    margin-left:auto;
    display:flex;
    align-items:center;
    gap:14px;
  }

  .search-form{
    position:relative;
    display:flex;
    align-items:center;
  }
  .search-form input{
    width:230px;
    height:42px;
    padding:0 38px 0 16px;
    font-size:14px;
    color:var(--text);
    background:var(--bg);
    border:1px solid var(--line);
    border-radius:999px;
    outline:none;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .search-form input::placeholder{color:var(--muted);}
  .search-form input:focus{
    border-color:var(--accent);
    box-shadow:0 0 0 2px rgba(200,241,53,.55);
  }
  .search-icon{
    position:absolute;right:14px;
    width:16px;height:16px;
    color:var(--muted);
    pointer-events:none;
  }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:0 22px;
    font-size:15px;
    font-weight:600;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    cursor:pointer;
    transition:background-color .22s var(--ease),color .22s var(--ease),
               border-color .22s var(--ease),transform .22s var(--ease),
               box-shadow .22s var(--ease);
  }
  .btn-primary{
    background:var(--ink);
    color:#fff;
    border-color:var(--ink);
  }
  .btn-primary:hover{
    background:var(--accent);
    color:var(--ink);
    border-color:var(--accent);
    transform:translateY(-1px);
    box-shadow:var(--shadow-hover);
  }
  .btn-ghost{
    background:transparent;
    color:var(--ink);
    border-color:var(--line);
  }
  .btn-ghost:hover{
    background:var(--bg);
    border-color:var(--accent);
  }
  .btn:focus-visible,
  .link-more:focus-visible,
  .main-nav a:focus-visible,
  .footer-col a:focus-visible{
    outline:2px solid var(--accent);
    outline-offset:2px;
  }

  .nav-toggle{
    display:none;
    width:44px;height:44px;
    border:1px solid var(--line);
    border-radius:10px;
    background:var(--surface);
    position:relative;
    cursor:pointer;
  }
  .nav-toggle span,
  .nav-toggle span::before,
  .nav-toggle span::after{
    position:absolute;
    left:50%;
    width:18px;height:2px;
    background:var(--ink);
    border-radius:2px;
    transform:translateX(-50%);
    transition:transform .24s var(--ease),opacity .2s var(--ease);
  }
  .nav-toggle span{top:50%;margin-top:-1px;}
  .nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
  .nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
  .nav-toggle.is-open span{background:transparent;}
  .nav-toggle.is-open span::before{transform:rotate(45deg);top:0;}
  .nav-toggle.is-open span::after{transform:rotate(-45deg);top:0;}

  /* ---------- Page head ---------- */
  .page-head{
    position:relative;
    background:var(--ink);
    color:#fff;
    overflow:hidden;
    padding:44px 0 54px;
  }
  .page-head::before{
    content:"";
    position:absolute;inset:0;
    background-image:url("/assets/images/backpic/back-2.webp");
    background-size:cover;
    background-position:center;
    opacity:.24;
  }
  .page-head .container{position:relative;z-index:2;}

  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:rgba(255,255,255,.72);
    margin-bottom:20px;
  }
  .breadcrumb a{color:rgba(255,255,255,.72);transition:color .2s var(--ease);}
  .breadcrumb a:hover{color:var(--accent);}
  .breadcrumb .sep{opacity:.5;}
  .breadcrumb .crumb-current{
    max-width:46ch;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
    color:#fff;
  }

  .page-head .cat-badge{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:28px;
    padding:0 12px;
    border-radius:999px;
    background:rgba(200,241,53,.16);
    border:1px solid rgba(200,241,53,.45);
    color:var(--accent);
    font-size:12px;
    font-weight:600;
    letter-spacing:.12em;
    text-transform:uppercase;
  }

  .article-title{
    margin:18px 0 0;
    font-size:clamp(28px,4vw,44px);
    font-weight:800;
    line-height:1.24;
    letter-spacing:-.01em;
    color:#fff;
    max-width:22ch;
  }

  .article-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:14px 22px;
    margin-top:22px;
    font-size:13px;
    color:rgba(255,255,255,.78);
  }
  .meta-dot{
    display:inline-flex;
    align-items:center;
    gap:7px;
  }
  .meta-dot b{
    font-weight:600;
    color:#fff;
    font-variant-numeric:tabular-nums;
  }
  .meta-chip{
    display:inline-flex;
    align-items:center;
    height:26px;
    padding:0 10px;
    border-radius:999px;
    border:1px solid rgba(255,255,255,.28);
    color:#fff;
    font-size:12px;
    letter-spacing:.06em;
  }

  /* ---------- Layout ---------- */
  .page-main{padding:56px 0 88px;}

  .article-grid{
    display:grid;
    grid-template-columns:minmax(0,1fr);
    gap:48px;
    align-items:start;
  }

  .card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);
    transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
  }
  .card:hover{
    border-color:rgba(200,241,53,.65);
    box-shadow:var(--shadow-hover);
    transform:translateY(-2px);
  }

  .cover-figure{
    margin:0 0 34px;
    border-radius:var(--radius-img);
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--bg);
  }
  .cover-figure img{
    width:100%;
    aspect-ratio:16/9;
    object-fit:cover;
  }

  .article-body{
    max-width:760px;
    font-size:17px;
    line-height:1.85;
  }

  .cms-article-body > *:first-child{margin-top:0;}
  .cms-article-body p{margin:0 0 1.5em;color:var(--text);}
  .cms-article-body h2{
    font-size:clamp(22px,2.4vw,28px);
    font-weight:700;
    line-height:1.35;
    margin:2.1em 0 .8em;
    color:var(--ink);
    padding-left:14px;
    border-left:3px solid var(--accent);
  }
  .cms-article-body h3{
    font-size:18px;
    font-weight:600;
    line-height:1.55;
    margin:1.8em 0 .6em;
    color:var(--ink);
  }
  .cms-article-body ul,
  .cms-article-body ol{
    margin:0 0 1.6em;
    padding-left:1.35em;
  }
  .cms-article-body li{margin:.5em 0;}
  .cms-article-body a{
    color:var(--ink);
    border-bottom:1px solid rgba(18,49,43,.35);
    transition:border-color .2s var(--ease),color .2s var(--ease);
  }
  .cms-article-body a:hover{border-color:var(--accent);}
  .cms-article-body blockquote{
    margin:1.8em 0;
    padding:18px 22px;
    background:var(--surface);
    border-left:3px solid var(--accent);
    border-radius:0 var(--radius-img) var(--radius-img) 0;
    color:var(--muted);
  }
  .cms-article-body img{
    border-radius:var(--radius-img);
    border:1px solid var(--line);
    margin:1.6em 0;
  }
  .cms-article-body table{
    width:100%;
    border-collapse:collapse;
    margin:1.6em 0;
    font-size:15px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-img);
    overflow:hidden;
  }
  .cms-article-body th,
  .cms-article-body td{
    padding:12px 14px;
    border-bottom:1px solid var(--line);
    text-align:left;
  }
  .cms-article-body th{background:var(--bg);font-weight:600;color:var(--ink);}
  .cms-article-body strong{font-weight:600;}
  .cms-article-body hr{
    border:0;
    border-top:1px solid var(--line);
    margin:2.4em 0;
  }

  .cms-empty{
    max-width:760px;
    padding:40px 28px;
    background:var(--surface);
    border:1px dashed var(--line);
    border-radius:var(--radius-card);
    text-align:center;
  }
  .cms-empty .empty-icon{
    width:52px;height:52px;
    margin:0 auto 16px;
    display:flex;align-items:center;justify-content:center;
    border-radius:14px;
    background:var(--bg);
    color:var(--ink);
  }
  .cms-empty h2{
    margin:0 0 10px;
    font-size:20px;
    font-weight:700;
    color:var(--ink);
  }
  .cms-empty p{margin:0 0 20px;color:var(--muted);font-size:15px;}

  /* tags */
  .tag-row{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
    margin-top:40px;
    padding-top:26px;
    border-top:1px solid var(--line);
  }
  .tag-row .tag-label{
    font-size:12px;
    letter-spacing:.14em;
    text-transform:uppercase;
    color:var(--muted);
    font-weight:600;
    margin-right:4px;
  }
  .tag{
    display:inline-flex;
    align-items:center;
    height:30px;
    padding:0 13px;
    font-size:13px;
    color:var(--ink);
    background:var(--bg);
    border:1px solid var(--line);
    border-radius:999px;
    transition:border-color .2s var(--ease),background-color .2s var(--ease);
  }
  .tag:hover{border-color:var(--accent);background:#fff;}

  .link-more{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:600;
    color:var(--ink);
    position:relative;
    padding-bottom:3px;
  }
  .link-more::after{
    content:"";
    position:absolute;left:0;bottom:0;
    height:1px;width:100%;
    background:var(--ink);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .24s var(--ease);
  }
  .link-more:hover::after{transform:scaleX(1);}

  /* ---------- Sidebar ---------- */
  .sidebar{display:grid;gap:24px;}
  .side-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:22px 22px 24px;
    box-shadow:var(--shadow-sm);
  }
  .side-card h3{
    margin:0 0 14px;
    font-size:16px;
    font-weight:700;
    color:var(--ink);
  }
  .side-card p{font-size:14px;color:var(--muted);line-height:1.8;margin:0 0 14px;}
  .side-list{list-style:none;margin:0;padding:0;}
  .side-list li + li{border-top:1px solid var(--line);}
  .side-list a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
    min-height:52px;
    padding:10px 2px;
    font-size:15px;
    color:var(--text);
    transition:background-color .2s var(--ease),padding-left .2s var(--ease),color .2s var(--ease);
  }
  .side-list a:hover{
    background:var(--bg);
    padding-left:10px;
    color:var(--ink);
  }
  .side-list .num{
    font-size:12px;
    font-weight:600;
    letter-spacing:.12em;
    color:var(--muted);
    font-variant-numeric:tabular-nums;
  }

  /* ---------- Related ---------- */
  .section{margin-top:80px;}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:20px;
    margin-bottom:26px;
  }
  .section-head h2{
    margin:0;
    font-size:clamp(22px,2.6vw,30px);
    font-weight:700;
    color:var(--ink);
    letter-spacing:-.01em;
  }
  .section-head .eyebrow{
    display:block;
    font-size:12px;
    font-weight:600;
    letter-spacing:.16em;
    text-transform:uppercase;
    color:var(--muted);
    margin-bottom:8px;
  }

  .related-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:24px;
  }
  .related-card{
    display:flex;
    flex-direction:column;
    overflow:hidden;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);
    transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
  }
  .related-card:hover{
    border-color:rgba(200,241,53,.65);
    box-shadow:var(--shadow-hover);
    transform:translateY(-2px);
  }
  .related-card .thumb{
    overflow:hidden;
    border-bottom:1px solid var(--line);
  }
  .related-card .thumb img{
    width:100%;
    aspect-ratio:16/10;
    object-fit:cover;
    transition:transform .3s var(--ease);
  }
  .related-card:hover .thumb img{transform:scale(1.03);}
  .related-card .body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .related-card h3{
    margin:0;
    font-size:17px;
    font-weight:600;
    line-height:1.55;
    color:var(--ink);
  }
  .related-card p{
    margin:0;
    font-size:14px;
    color:var(--muted);
    line-height:1.8;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .related-card .meta{
    margin-top:auto;
    font-size:13px;
    color:var(--muted);
    font-variant-numeric:tabular-nums;
  }

  /* ---------- CTA ---------- */
  .cta-band{
    margin-top:80px;
    background:var(--ink);
    color:#fff;
    border-radius:var(--radius-card);
    padding:48px 40px;
    position:relative;
    overflow:hidden;
  }
  .cta-band::after{
    content:"";
    position:absolute;
    right:-80px;top:-80px;
    width:280px;height:280px;
    background:radial-gradient(circle,rgba(200,241,53,.24),transparent 68%);
  }
  .cta-band .cta-inner{position:relative;z-index:2;max-width:720px;}
  .cta-band h2{
    margin:0 0 14px;
    font-size:clamp(24px,3vw,34px);
    font-weight:700;
    line-height:1.3;
  }
  .cta-band p{
    margin:0 0 26px;
    color:rgba(255,255,255,.78);
    font-size:16px;
  }
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
  .btn-accent{
    background:var(--accent);
    color:var(--ink);
    border-color:var(--accent);
  }
  .btn-accent:hover{
    background:#fff;
    border-color:#fff;
    color:var(--ink);
    transform:translateY(-1px);
  }
  .btn-outline-light{
    background:transparent;
    color:#fff;
    border-color:rgba(255,255,255,.32);
  }
  .btn-outline-light:hover{
    border-color:var(--accent);
    color:var(--accent);
    background:rgba(255,255,255,.04);
  }

  /* ---------- Footer ---------- */
  .site-footer{
    background:var(--ink);
    color:rgba(255,255,255,.72);
    padding:64px 0 26px;
    margin-top:96px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:2fr 1fr 1fr 1.4fr;
    gap:40px;
  }
  .footer-brand .logo{color:#fff;font-size:17px;}
  .footer-desc{
    margin:18px 0 0;
    font-size:14px;
    line-height:1.9;
    color:rgba(255,255,255,.66);
    max-width:34ch;
  }
  .footer-col h4{
    margin:0 0 16px;
    font-size:13px;
    font-weight:600;
    letter-spacing:.14em;
    text-transform:uppercase;
    color:var(--accent);
  }
  .footer-col ul{list-style:none;margin:0;padding:0;}
  .footer-col li{margin-bottom:10px;}
  .footer-col a{
    display:inline-block;
    font-size:14px;
    color:rgba(255,255,255,.72);
    transition:color .2s var(--ease),transform .2s var(--ease);
  }
  .footer-col a:hover{color:var(--accent);transform:translateX(2px);}
  .footer-contact p{
    margin:0 0 10px;
    font-size:14px;
    line-height:1.8;
    color:rgba(255,255,255,.66);
  }
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    margin-top:48px;
    padding-top:22px;
    border-top:1px solid rgba(255,255,255,.14);
    font-size:13px;
    color:rgba(255,255,255,.55);
  }
  .footer-bottom .back-top{
    display:inline-flex;
    align-items:center;
    min-height:44px;
    padding:0 4px;
    color:rgba(255,255,255,.72);
    transition:color .2s var(--ease);
  }
  .footer-bottom .back-top:hover{color:var(--accent);}

  /* ---------- Reveal ---------- */
  .reveal{
    opacity:0;
    transform:translateY(10px);
    transition:opacity .5s var(--ease),transform .5s var(--ease);
  }
  .reveal.is-in{opacity:1;transform:none;}

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

  /* ---------- Breakpoints ---------- */
  @media (min-width:1024px){
    .container{padding:0 32px;}
    .article-grid{grid-template-columns:minmax(0,1fr) 320px;gap:56px;}
    .sidebar{position:sticky;top:96px;}
  }
  @media (min-width:1440px){
    .container{max-width:1280px;}
  }

  @media (max-width:1023px){
    .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:1fr 1fr;}
    .sidebar{position:static;}
  }

  @media (max-width:900px){
    .search-form input{width:170px;}
    .main-nav{gap:18px;}
  }

  @media (max-width:860px){
    .search-form{display:none;}
    .nav-toggle{display:block;margin-left:12px;}
    .nav-right .btn-primary{padding:0 16px;font-size:14px;}
    .main-nav{
      position:fixed;
      top:70px;
      right:0;
      width:min(320px,86vw);
      height:calc(100vh - 70px);
      flex-direction:column;
      align-items:flex-start;
      gap:4px;
      margin:0;
      padding:20px 22px;
      background:var(--surface);
      border-left:1px solid var(--line);
      box-shadow:-8px 0 30px rgba(18,49,43,.12);
      transform:translateX(105%);
      transition:transform .3s var(--ease);
      overflow-y:auto;
    }
    .main-nav.is-open{transform:translateX(0);}
    .main-nav a{
      width:100%;
      padding:14px 0;
      font-size:16px;
      border-bottom:1px solid var(--line);
    }
    .main-nav a::after{display:none;}
    .main-nav a.active{color:var(--ink);}
  }

  @media (max-width:768px){
    .site-body{font-size:16px;}
    .page-head{padding:32px 0 42px;}
    .page-main{padding:40px 0 64px;}
    .section{margin-top:56px;}
    .cta-band{padding:34px 22px;border-radius:var(--radius-card);}
    .cta-actions .btn{width:100%;}
    .breadcrumb .crumb-current{max-width:30ch;}
    .related-grid{grid-template-columns:minmax(0,1fr);}
    .footer-grid{grid-template-columns:1fr;gap:32px;}
    .footer-bottom{margin-top:36px;}
  }

  @media (max-width:520px){
    .container{padding:0 18px;}
    .logo{font-size:16px;}
    .nav-right .btn-primary{display:none;}
    .article-title{font-size:26px;max-width:none;}
    .article-meta{gap:10px 16px;}
    .footer-brand .logo{font-size:16px;}
  }

/* roulang page: category1 */
:root{
  --ink:#12312B;
  --accent:#C8F135;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --text:#1B211E;
  --muted:#5A6560;
  --line:#E4E1D8;
  --warn:#E4572E;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(18,49,43,.06);
  --shadow-2:0 12px 28px -12px rgba(18,49,43,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;font-size:17px;line-height:1.85;letter-spacing:.01em;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}
@media (min-width:1440px){:root{--container:1280px}}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s var(--ease)}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(0,0,0,.05)}
.nav-wrap{display:flex;align-items:center;gap:18px;min-height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.logo-mark{width:30px;height:30px;flex:none;display:grid;place-items:center;background:var(--ink);border-radius:9px}
.logo-mark svg{width:20px;height:20px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 12px;border-radius:9px;font-size:15px;font-weight:500;color:var(--muted);transition:color .2s var(--ease),background .2s var(--ease)}
.main-nav a:hover{color:var(--ink);background:var(--bg)}
.main-nav a.active{color:var(--ink);font-weight:600}
.main-nav a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;background:var(--accent)}
.nav-right{display:flex;align-items:center;gap:12px}
.search-form{position:relative}
.search-form input{width:210px;min-height:44px;padding:0 40px 0 16px;border:1px solid var(--line);background:var(--bg);border-radius:999px;font-size:14.5px;transition:box-shadow .2s var(--ease),border-color .2s var(--ease)}
.search-form input::placeholder{color:var(--muted)}
.search-form input:focus{outline:none;border-color:transparent;box-shadow:0 0 0 2px var(--accent)}
.search-icon{position:absolute;right:13px;top:50%;width:18px;height:18px;transform:translateY(-50%);color:var(--muted);pointer-events:none}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border:1px solid transparent;border-radius:var(--radius-btn);font-size:15px;font-weight:600;cursor:pointer;transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--bg);border-color:rgba(200,241,53,.7)}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{background:#fff;color:var(--ink);transform:translateY(-1px)}
.btn-on-dark{background:transparent;border-color:rgba(255,255,255,.32);color:#fff}
.btn-on-dark:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn-lg{min-height:52px;padding:0 26px;font-size:16px}
.nav-toggle{display:none;width:44px;height:44px;margin-left:auto;place-items:center;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:background .24s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .24s var(--ease),top .24s var(--ease)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-overlay{position:fixed;inset:0;z-index:70;background:rgba(18,49,43,.5);opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease)}
body.nav-open .nav-overlay{opacity:1;visibility:visible}
body.nav-open{overflow:hidden}
body.nav-open .site-header{z-index:90}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}

@media (max-width:1023px){
  .nav-toggle{display:grid}
  .main-nav,.nav-right{display:none}
  .main-nav.is-open{display:flex;flex-direction:column;align-items:stretch;gap:0;position:fixed;top:0;right:0;width:min(88vw,340px);height:100vh;padding:88px 18px 200px;background:#fff;box-shadow:-16px 0 40px rgba(18,49,43,.18);overflow-y:auto;z-index:80}
  .main-nav.is-open a{min-height:auto;padding:15px 10px;border-bottom:1px solid var(--line);border-radius:0;font-size:16px}
  .main-nav.is-open a.active::after{left:10px;right:auto;width:34px;bottom:8px}
  .nav-right.is-open{display:flex;flex-direction:column;align-items:stretch;gap:12px;position:fixed;bottom:0;right:0;width:min(88vw,340px);padding:0 18px 26px;background:#fff;z-index:81}
  .nav-right.is-open .search-form{width:100%}
  .nav-right.is-open .search-form input{width:100%}
  .nav-right.is-open .btn{width:100%}
}

/* ---------- Category hero ---------- */
.cat-hero{position:relative;padding:64px 0 60px;background:var(--ink) url("/assets/images/backpic/back-2.webp") center/cover no-repeat;color:#fff;overflow:hidden}
.cat-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(104deg,rgba(18,49,43,.95) 0%,rgba(18,49,43,.78) 58%,rgba(18,49,43,.6) 100%)}
.cat-hero-inner{position:relative}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72);letter-spacing:.03em}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.5}
.eyebrow{display:inline-block;margin:22px 0 14px;padding:6px 13px;border-radius:999px;background:rgba(200,241,53,.16);color:var(--accent);font-size:12.5px;font-weight:600;letter-spacing:.16em}
.cat-hero h1{color:#fff;font-size:clamp(30px,4.4vw,50px);font-weight:800;line-height:1.22;letter-spacing:-.01em;max-width:19em}
.cat-hero-desc{margin-top:20px;max-width:62ch;color:rgba(255,255,255,.85);font-size:16.5px}
.hero-facts{display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px;margin-top:30px;font-size:13.5px;color:rgba(255,255,255,.78)}
.hero-facts .divider{width:1px;height:14px;background:rgba(255,255,255,.3)}
.hero-facts .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;margin-right:8px}

/* ---------- Section frame ---------- */
.section{padding:60px 0}
@media (min-width:1024px){.section{padding:104px 0}}
.section-tight{padding:56px 0}
@media (min-width:1024px){.section-tight{padding:84px 0}}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,3vw,36px)}
.section-head p{margin-top:14px;color:var(--muted);font-size:16.5px}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- Anchors + longform ---------- */
.anchor-layout{display:grid;gap:32px}
@media (min-width:1024px){.anchor-layout{grid-template-columns:238px minmax(0,1fr);gap:56px}}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-1)}
@media (min-width:1024px){.toc{position:sticky;top:96px}}
.toc-title{font-size:13px;font-weight:600;letter-spacing:.16em;color:var(--muted);margin-bottom:14px}
.toc a{display:block;padding:9px 12px;margin-bottom:4px;border-left:2px solid transparent;border-radius:0 8px 8px 0;font-size:14.5px;color:var(--muted);transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),padding-left .2s var(--ease)}
.toc a:hover{color:var(--ink);background:var(--bg);border-left-color:var(--accent);padding-left:15px}
.toc a.toc-cta{margin-top:12px;border-left:0;background:var(--ink);color:#fff;text-align:center;border-radius:var(--radius-btn);font-weight:600;padding:11px 12px}
.toc a.toc-cta:hover{background:var(--accent);color:var(--ink);padding-left:12px}

.longform{max-width:768px}
.longform .block + .block{margin-top:56px}
.longform h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:18px}
.longform h3{font-size:18px;margin-bottom:10px}
.longform p{color:#26332E;font-size:16.5px}
.longform p + p{margin-top:16px}
.lead{font-size:18px !important;color:var(--ink) !important}
.mono-label{display:inline-block;margin-bottom:10px;font-size:12.5px;font-weight:600;letter-spacing:.18em;color:var(--muted)}

.point-list{margin-top:26px;border-top:1px solid var(--line)}
.point-list li{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.point-num{flex:none;min-width:46px;font-size:22px;font-weight:700;color:var(--ink);line-height:1.4;border-bottom:3px solid var(--accent);height:34px}
.point-body h3{font-size:17.5px}
.point-body p{margin-top:6px;color:var(--muted);font-size:15.5px}

.numbered-steps{margin-top:24px}
.numbered-steps li{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)}
.numbered-steps .idx{flex:none;width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:var(--ink);color:#fff;font-size:13px;font-weight:600}
.numbered-steps strong{display:block;font-size:16.5px;color:var(--ink);font-weight:600}
.numbered-steps span{display:block;margin-top:4px;color:var(--muted);font-size:15px}

.pull-quote{margin:28px 0 0;padding:22px 26px;background:var(--surface);border-left:3px solid var(--accent);border-radius:0 var(--radius-card) var(--radius-card) 0;box-shadow:var(--shadow-1);font-size:17px;color:var(--ink)}
.pull-quote cite{display:block;margin-top:10px;font-style:normal;font-size:13.5px;color:var(--muted);letter-spacing:.04em}

.figure{margin:28px 0 4px}
.figure img{width:100%;border:1px solid var(--line);border-radius:var(--radius-img);object-fit:cover;box-shadow:var(--shadow-1)}
.figcap{margin-top:12px;font-size:13.5px;color:var(--muted)}

.two-col{display:grid;gap:20px;margin-top:26px}
@media (min-width:768px){.two-col{grid-template-columns:1fr 1.15fr}}
.info-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(200,241,53,.55)}
.info-card p{margin-top:10px;color:var(--muted);font-size:15.5px}
.tag{display:inline-block;padding:4px 11px;border-radius:999px;background:rgba(200,241,53,.24);color:var(--ink);font-size:12.5px;font-weight:600;letter-spacing:.06em}
.mini-list{margin-top:14px}
.mini-list li{position:relative;padding-left:18px;margin-bottom:8px;font-size:15.5px;color:#2c3833}
.mini-list li::before{content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:2px;background:var(--accent)}

.zebra-list{margin-top:26px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}
.zebra-list li{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:baseline;justify-content:space-between;min-height:56px;padding:18px 24px;border-bottom:1px solid var(--line);transition:background .22s var(--ease),transform .22s var(--ease)}
.zebra-list li:nth-child(odd){background:#FBFAF6}
.zebra-list li:last-child{border-bottom:0}
.zebra-list li:hover{background:var(--bg);transform:translateX(2px)}
.zebra-list .zq{font-weight:600;color:var(--ink);font-size:16px}
.zebra-list .za{color:var(--muted);font-size:15px}

.note{display:flex;gap:14px;margin-top:24px;padding:18px 22px;border:1px solid rgba(228,87,46,.22);border-radius:var(--radius-card);background:rgba(228,87,46,.07);font-size:15.5px;color:#7B3524}
.note strong{color:var(--warn);flex:none}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);margin-bottom:14px;overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
.faq-item[open]{border-color:rgba(200,241,53,.6);box-shadow:var(--shadow-1)}
.faq-item summary{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:20px 24px;font-size:17px;font-weight:600;line-height:1.8;color:var(--ink);cursor:pointer;list-style:none;box-shadow:inset 2px 0 0 transparent}
.faq-item[open] summary{box-shadow:inset 2px 0 0 var(--accent)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";flex:none;font-size:22px;font-weight:500;line-height:1;color:var(--muted);transition:transform .2s var(--ease),color .2s var(--ease)}
.faq-item[open] summary::after{content:"+";transform:rotate(45deg);color:var(--ink)}
.faq-item .faq-a{padding:0 24px 22px;color:#2c3833;font-size:15.8px}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:#fff;padding:64px 0}
@media (min-width:1024px){.cta-band{padding:96px 0}}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);max-width:22em}
.cta-band p{margin-top:16px;max-width:56ch;color:rgba(255,255,255,.78);font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
@media (max-width:639px){.cta-actions{flex-direction:column}.cta-actions .btn{width:100%}}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 0;font-size:15px}
.footer-grid{display:grid;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr}}
.footer-brand .logo{color:#fff}
.footer-desc{margin-top:18px;max-width:40ch;line-height:1.85;font-size:14.5px}
.footer-col h4{margin-bottom:16px;font-size:15px;font-weight:600;color:#fff;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col a{display:inline-block;color:rgba(255,255,255,.72);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-contact p{margin-bottom:10px;font-size:14.5px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;margin-top:52px;padding:20px 0;border-top:1px solid rgba(255,255,255,.14);font-size:13.5px}
.back-top{color:rgba(255,255,255,.72)}
.back-top:hover{color:var(--accent)}

/* ---------- Reveal ---------- */
html.js .reveal{opacity:0;transform:translateY(10px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
html.js .reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html.js .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#12312B;
  --ink-2:#1B3A33;
  --accent:#C8F135;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --text:#1B211E;
  --muted:#5A6560;
  --line:#E4E1D8;
  --warn:#E4572E;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-sm:0 1px 2px rgba(18,49,43,.06);
  --shadow-hover:0 12px 28px -12px rgba(18,49,43,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:68px;
}
*,*::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:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3}
h1{font-size:clamp(30px,4.4vw,50px);font-weight:800;line-height:1.22;letter-spacing:-.01em}
h2{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.3;letter-spacing:-.005em}
h3{font-size:19px;font-weight:600;line-height:1.45}
::selection{background:var(--accent);color:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(0,0,0,.05)}
.nav-wrap{display:flex;align-items:center;gap:18px;min-height:var(--nav-h)}
.logo{
  display:inline-flex;align-items:center;gap:9px;font-weight:800;font-size:17px;
  color:var(--ink);letter-spacing:-.01em;white-space:nowrap;
}
.logo-mark{display:inline-flex;width:28px;height:28px;flex:0 0 28px}
.logo-mark svg{width:100%;height:100%;display:block}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px}
.main-nav a{
  position:relative;padding:8px 12px;font-size:15px;font-weight:500;color:#2C3A35;
  border-radius:8px;transition:color .2s var(--ease),background .2s var(--ease);white-space:nowrap;
}
.main-nav a:hover{color:var(--ink);background:var(--bg)}
.main-nav a.active{color:var(--ink);font-weight:700}
.main-nav a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-form{position:relative;display:flex;align-items:center}
.search-form input{
  width:210px;height:40px;border:1px solid transparent;background:var(--bg);
  border-radius:999px;padding:0 42px 0 16px;font-size:14px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search-form input::placeholder{color:#8A938E}
.search-form input:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 2px rgba(200,241,53,.55)}
.search-icon{position:absolute;right:14px;width:18px;height:18px;color:var(--muted);pointer-events:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--accent);color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--bg);border-color:var(--accent)}
.btn-on-dark{background:var(--accent);color:var(--ink)}
.btn-on-dark:hover{background:#fff;color:var(--ink);transform:translateY(-1px)}
.btn-ghost-dark{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}
.btn-ghost-dark:hover{border-color:var(--accent);color:var(--accent)}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;border:1px solid var(--line);
  border-radius:10px;background:#fff;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--accent);background:var(--bg)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
@media (max-width:1023px){
  .main-nav,.nav-right{display:none}
  .nav-toggle{display:inline-flex}
}

/* ---------- 移动端抽屉 ---------- */
.nav-drawer{
  position:fixed;top:0;right:0;width:min(86vw,340px);height:100%;background:#fff;z-index:90;
  transform:translateX(102%);transition:transform .28s var(--ease);
  padding:20px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
  box-shadow:-8px 0 30px -18px rgba(18,49,43,.5);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,49,43,.45);opacity:0;visibility:hidden;z-index:85;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
  cursor:pointer;font-size:18px;line-height:1;color:var(--ink);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.drawer-close:hover{border-color:var(--accent);background:var(--bg)}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{
  padding:12px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--text);
  border:1px solid transparent;transition:background .2s var(--ease),border-color .2s var(--ease);
}
.drawer-nav a:hover{background:var(--bg)}
.drawer-nav a.active{background:var(--bg);border-color:var(--accent);font-weight:700;color:var(--ink)}
.drawer-search input{
  width:100%;height:44px;border-radius:10px;border:1px solid var(--line);background:var(--bg);
  padding:0 14px;font-size:14px;outline:none;
}
.drawer-search input:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 2px rgba(200,241,53,.55)}
.drawer-note{font-size:13px;color:var(--muted);line-height:1.8}
@media (min-width:1024px){.nav-drawer,.drawer-mask{display:none}}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:76px 0}}
@media (min-width:1024px){.section{padding:100px 0}}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px}
@media (min-width:1024px){.section-head{margin-bottom:52px}}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink);background:rgba(200,241,53,.35);border-radius:999px;padding:4px 12px;margin-bottom:16px;
}
.lead{color:var(--muted);font-size:16.5px}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:4px}
.breadcrumb .sep{color:#C3C8C2}
.breadcrumb .current{color:var(--ink);font-weight:600;max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- Hero ---------- */
.hero{position:relative;background:#fff;border-bottom:1px solid var(--line);overflow:hidden}
.hero-bg{
  position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;opacity:.14;
}
.hero-inner{position:relative;padding:36px 0 52px}
@media (min-width:1024px){.hero-inner{padding:48px 0 76px}}
.hero-grid{display:grid;gap:36px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.1fr .9fr;gap:64px}}
.hero h1{margin:20px 0 18px;max-width:16em}
.hero-sub{color:var(--muted);font-size:17px;max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
@media (max-width:639px){
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
}
.hero-figure img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-img);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;font-size:13.5px;color:var(--muted)}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}

/* ---------- 攻略地图 ---------- */
.map-grid{display:grid;gap:28px}
@media (min-width:1024px){
  .map-grid{grid-template-columns:.82fr 1.18fr;gap:64px;align-items:start}
  .map-aside{position:sticky;top:96px}
}
.map-aside h2{margin-bottom:14px}
.map-aside p{color:var(--muted)}
.map-list{border-top:1px solid var(--line)}
.map-item{
  display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line);
  transition:padding-left .22s var(--ease),background .22s var(--ease);
}
.map-item:hover{padding-left:8px}
.map-num{
  flex:0 0 auto;font-size:24px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;
  letter-spacing:.02em;line-height:1.3;
}
.map-num i{display:block;width:26px;height:3px;background:var(--accent);border-radius:2px;margin-top:6px;font-style:normal}
.map-item h3{margin-bottom:6px}
.map-item p{color:var(--muted);font-size:15.5px}

/* ---------- 两列图文交替 ---------- */
.media-rows{display:flex;flex-direction:column;gap:56px}
@media (min-width:1024px){.media-rows{gap:88px}}
.media-row{display:grid;gap:24px;align-items:center}
@media (min-width:1024px){
  .media-row{grid-template-columns:1fr 1fr;gap:60px}
  .media-row.reverse .media-figure{order:2}
}
.media-figure{overflow:hidden;border-radius:var(--radius-img)}
.media-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);transition:transform .3s var(--ease);
}
.media-row:hover .media-figure img{transform:scale(1.03)}
.media-body{max-width:560px}
.media-body h3{margin-bottom:12px;font-size:clamp(20px,2.2vw,24px)}
.media-body>p{color:var(--muted);font-size:16px}
.plain-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.plain-list li{
  position:relative;padding-left:22px;font-size:15.5px;color:var(--text);
}
.plain-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:10px;height:2px;background:var(--accent);border-radius:2px;
}

/* ---------- 评分条 ---------- */
.rate-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-sm);
}
@media (min-width:768px){.rate-panel{padding:34px}}
.rate-grid{display:grid;gap:24px 44px}
@media (min-width:768px){.rate-grid{grid-template-columns:1fr 1fr}}
.rating-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:9px}
.rating-head span:first-child{font-size:15px;font-weight:600;color:var(--ink)}
.rating-val{font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--muted);font-variant-numeric:tabular-nums}
.rating-track{height:8px;border-radius:999px;background:var(--bg);overflow:hidden;border:1px solid var(--line)}
.rating-fill{display:block;height:100%;background:var(--accent);border-radius:999px}

/* ---------- 引用 ---------- */
.quote-grid{display:grid;gap:22px}
@media (min-width:768px){
  .quote-grid{grid-template-columns:1fr 1fr;gap:30px}
  .quote-card:nth-child(2){transform:translateY(26px)}
}
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-sm);position:relative;
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.quote-card:hover{border-color:rgba(200,241,53,.7);box-shadow:var(--shadow-hover)}
.quote-mark{font-size:44px;line-height:1;color:var(--accent);font-weight:700;display:block;margin-bottom:6px}
.quote-card blockquote{margin:0;font-size:16.5px;color:var(--text)}
.quote-card figcaption{
  display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;
  border-top:1px solid var(--line);font-size:13.5px;color:var(--muted);
}
.avatar{
  width:44px;height:44px;flex:0 0 44px;border-radius:50%;background:var(--ink);color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item:hover{border-color:rgba(200,241,53,.7)}
.faq-item[open]{border-color:rgba(200,241,53,.9);box-shadow:var(--shadow-sm)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16.5px;font-weight:600;line-height:1.8;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:600;line-height:1;color:var(--ink);
  transition:transform .2s var(--ease);flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{
  margin:0 22px 22px;padding-left:16px;border-left:2px solid var(--accent);
  color:var(--muted);font-size:15.5px;
}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--ink);color:#fff;padding:56px 0;position:relative;overflow:hidden}
@media (min-width:1024px){.cta-band{padding:84px 0}}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:rgba(200,241,53,.14);pointer-events:none;
}
.cta-inner{position:relative;display:grid;gap:26px}
@media (min-width:1024px){.cta-inner{grid-template-columns:1.3fr .7fr;align-items:center;gap:48px}}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.72);font-size:16px;max-width:44em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:639px){.cta-actions{flex-direction:column}.cta-actions .btn{width:100%}}
.cta-note{font-size:13.5px;color:rgba(255,255,255,.55)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:60px 0 26px;margin-top:0}
@media (min-width:1024px){.site-footer{padding:76px 0 30px}}
.footer-grid{display:grid;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px}}
.footer-brand .logo{color:#fff;font-size:17px}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:360px}
.footer-col h4{font-size:13px;font-weight:600;letter-spacing:.12em;color:#fff;margin-bottom:14px}
.footer-col ul li+li{margin-top:10px}
.footer-col a{
  display:inline-block;font-size:14px;color:rgba(255,255,255,.72);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-contact p{font-size:14px;line-height:1.9;margin-bottom:8px;color:rgba(255,255,255,.66)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.55);
}
.back-top{transition:color .2s var(--ease)}
.back-top:hover{color:var(--accent)}

/* ---------- 入场动效 ---------- */
.js-enabled .reveal{opacity:0;transform:translateY(10px)}
.js-enabled .reveal.is-visible{
  opacity:1;transform:none;transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.hero-title-line{display:block}
.js-enabled .hero-title-line{animation:riseIn .6s var(--ease) both}
.js-enabled .hero-title-line:nth-child(2){animation-delay:.12s}
@keyframes riseIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .js-enabled .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --ink:#12312B;
  --accent:#C8F135;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --text:#1B211E;
  --muted:#5A6560;
  --line:#E4E1D8;
  --warn:#E4572E;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-soft:0 1px 2px rgba(18,49,43,.06);
  --shadow-hover:0 12px 28px -12px rgba(18,49,43,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  background:var(--bg);
  color:var(--text);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit}
p{margin:0 0 1.1em}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .26s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(0,0,0,.05)}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  font-size:17px;
  color:var(--ink);
  letter-spacing:-.01em;
  white-space:nowrap;
}
.logo-mark{
  display:inline-flex;
  width:34px;height:34px;
  border-radius:10px;
  background:var(--ink);
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
}
.logo-mark svg{width:22px;height:22px}
.main-nav{
  display:none;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.main-nav a{
  display:inline-block;
  position:relative;
  padding:8px 10px;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  border-radius:8px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a:hover{color:var(--ink);background:var(--bg)}
.main-nav a.active{color:var(--ink);font-weight:600}
.main-nav a.active::after{
  content:"";
  position:absolute;
  left:10px;right:10px;bottom:0;
  height:2px;
  background:var(--accent);
  border-radius:2px;
}
.nav-right{display:none;align-items:center;gap:12px;margin-left:auto}
.search-form{
  position:relative;
  display:flex;
  align-items:center;
}
.search-form input{
  width:210px;
  height:42px;
  padding:0 38px 0 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--bg);
  color:var(--ink);
  font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search-form input::placeholder{color:var(--muted)}
.search-form input:focus{
  outline:none;
  background:var(--surface);
  border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(200,241,53,.55);
}
.search-icon{
  position:absolute;
  right:13px;
  width:17px;height:17px;
  color:var(--muted);
  pointer-events:none;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:var(--ink);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--bg);border-color:var(--accent)}
.btn-on-dark{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.btn-on-dark:hover{background:#fff;color:var(--ink);border-color:#fff;transform:translateY(-1px)}
.btn-block{width:100%}
.nav-toggle{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:5px;
  width:44px;height:44px;
  margin-left:auto;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle span{position:relative}
.nav-toggle span::before,
.nav-toggle span::after{content:"";position:absolute;left:0}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

.mobile-panel{
  position:fixed;
  top:0;right:0;
  z-index:70;
  width:min(88vw,360px);
  height:100%;
  padding:88px 24px 32px;
  background:var(--surface);
  border-left:1px solid var(--line);
  box-shadow:-18px 0 40px -24px rgba(18,49,43,.4);
  transform:translateX(102%);
  transition:transform .3s var(--ease);
  overflow-y:auto;
}
.mobile-panel.open{transform:translateX(0)}
.mobile-panel a{
  display:block;
  padding:13px 12px;
  border-radius:10px;
  font-size:16px;
  font-weight:500;
  color:var(--muted);
  border-bottom:1px solid var(--line);
}
.mobile-panel a:hover{background:var(--bg);color:var(--ink)}
.mobile-panel a.active{color:var(--ink);font-weight:700;box-shadow:inset 3px 0 0 var(--accent)}
.mobile-panel .mobile-search{margin:18px 0}
.mobile-panel .mobile-search input{
  width:100%;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--bg);color:var(--ink);
}
.mobile-panel .mobile-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(200,241,53,.5)}
.nav-scrim{
  position:fixed;inset:0;z-index:60;
  background:rgba(18,49,43,.42);
  opacity:0;visibility:hidden;
  transition:opacity .26s var(--ease),visibility .26s var(--ease);
}
.nav-scrim.open{opacity:1;visibility:visible}
@media (min-width:1024px){
  .main-nav{display:flex}
  .nav-right{display:flex}
  .nav-toggle{display:none}
  .mobile-panel,.nav-scrim{display:none}
}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(102deg,rgba(18,49,43,.94) 0%,rgba(18,49,43,.86) 46%,rgba(18,49,43,.62) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:60px 0 64px;
}
.page-hero .breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:rgba(255,255,255,.72);
  margin-bottom:18px;
}
.page-hero .breadcrumb a{color:rgba(255,255,255,.82)}
.page-hero .breadcrumb a:hover{color:var(--accent)}
.page-hero .breadcrumb span.sep{opacity:.5}
.page-hero h1{
  color:#fff;
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.24;
  font-weight:800;
  max-width:16em;
}
.page-hero .hero-desc{
  margin-top:18px;
  max-width:60ch;
  color:rgba(255,255,255,.84);
  font-size:16.5px;
  line-height:1.9;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-tags .tag{
  display:inline-flex;align-items:center;
  height:32px;padding:0 13px;
  border-radius:999px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);
  font-size:13.5px;
  color:#fff;
}
.hero-tags .tag.hot{background:rgba(200,241,53,.16);border-color:rgba(200,241,53,.45);color:#EAFBB8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px 30px;
  margin-top:34px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.18);
}
.hero-stats li{display:flex;align-items:baseline;gap:9px;font-size:14px;color:rgba(255,255,255,.78)}
.hero-stats b{font-size:22px;font-weight:700;color:var(--accent);letter-spacing:.02em}
@media (min-width:768px){
  .page-hero{padding:76px 0 84px}
}

/* ---------- sections ---------- */
.section{padding:58px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
@media (min-width:768px){.section{padding:78px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section-head{max-width:64ch;margin-bottom:34px}
.eyebrow{
  display:inline-block;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:12px;
}
.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.3}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px}
.lead-md{font-size:17px;color:var(--muted)}

/* ---------- timeline steps ---------- */
.steps{position:relative;max-width:920px}
.steps::before{
  content:"";
  position:absolute;
  left:26px;top:14px;bottom:44px;
  width:2px;
  background:linear-gradient(180deg,var(--line),rgba(200,241,53,.75),var(--line));
}
.step{
  position:relative;
  display:grid;
  grid-template-columns:56px 1fr;
  gap:18px;
  padding-bottom:30px;
}
.step:last-child{padding-bottom:0}
.step-num{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:center;
  width:54px;height:54px;
  border-radius:50%;
  background:var(--accent);
  color:var(--ink);
  font-weight:800;
  font-size:18px;
  letter-spacing:.02em;
  border:4px solid var(--bg);
  box-shadow:var(--shadow-soft);
}
.section-alt .step-num{border-color:var(--surface)}
.step-body{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 22px 20px;
  box-shadow:var(--shadow-soft);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.step:hover .step-body{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(200,241,53,.85)}
.section-alt .step-body{background:var(--bg)}
.step-meta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:8px;
}
.step-body h3{font-size:19px;line-height:1.5}
.step-body p{margin:10px 0 0;color:var(--muted);font-size:15.5px}
.step-list{margin-top:14px;border-top:1px dashed var(--line);padding-top:14px}
.step-list li{
  position:relative;
  padding-left:22px;
  margin-bottom:9px;
  font-size:15px;
  color:var(--text);
}
.step-list li:last-child{margin-bottom:0}
.step-list li::before{
  content:"";
  position:absolute;
  left:2px;top:.72em;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--accent);
}
.step-note{
  margin-top:14px;
  display:flex;
  gap:10px;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(228,87,46,.07);
  border:1px solid rgba(228,87,46,.22);
  font-size:14.5px;
  color:#7A3520;
}
.step-note b{color:var(--warn);font-weight:700;white-space:nowrap}

/* ---------- scenario ---------- */
.split{
  display:grid;
  grid-template-columns:1fr;
  gap:30px;
  align-items:center;
}
@media (min-width:1024px){
  .split{grid-template-columns:1.05fr .95fr;gap:56px}
  .split.reverse .split-media{order:2}
}
.split-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
}
.scenario-list{display:grid;gap:14px}
.scenario-item{
  display:flex;
  gap:16px;
  padding:18px 20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.scenario-item:hover{border-color:rgba(200,241,53,.9);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.scenario-item .idx{
  flex:0 0 auto;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--muted);
  padding-top:3px;
}
.scenario-item h3{font-size:17.5px}
.scenario-item p{margin:6px 0 0;font-size:15px;color:var(--muted)}

/* ---------- dark safety band ---------- */
.band{
  background:var(--ink);
  color:#fff;
  padding:58px 0;
}
@media (min-width:1024px){.band{padding:84px 0}}
.band h2{color:#fff;font-size:clamp(23px,2.8vw,34px);line-height:1.32}
.band .eyebrow{color:rgba(200,241,53,.9)}
.band-grid{display:grid;grid-template-columns:1fr;gap:26px;margin-top:30px}
@media (min-width:768px){.band-grid{grid-template-columns:repeat(2,1fr);gap:26px 36px}}
.band-item{
  padding:20px 22px;
  border-radius:var(--radius-card);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.04);
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.band-item:hover{border-color:rgba(200,241,53,.7);background:rgba(255,255,255,.07)}
.band-item strong{
  display:block;
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--accent);
  font-weight:600;
}
.band-item h3{color:#fff;font-size:18px;margin-top:9px}
.band-item p{margin:8px 0 0;font-size:15px;color:rgba(255,255,255,.76)}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:12px;
  box-shadow:var(--shadow-soft);
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item:hover{border-color:rgba(200,241,53,.85)}
.faq-item[open]{
  box-shadow:inset 2px 0 0 0 var(--accent),var(--shadow-soft);
  border-color:rgba(200,241,53,.85);
}
.faq-item summary{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  padding:18px 22px;
  cursor:pointer;
  list-style:none;
  font-weight:600;
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:-4px;border-radius:14px}
.faq-icon{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:26px;height:26px;
  margin-top:3px;
  border-radius:50%;
  background:var(--bg);
  border:1px solid var(--line);
  color:var(--ink);
  font-size:15px;
  line-height:1;
  transition:transform .2s var(--ease),background .2s var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(90deg);background:var(--accent);border-color:var(--accent)}
.faq-answer{padding:0 22px 20px;color:var(--muted);font-size:15.5px}
.faq-answer p{margin:0 0 .8em}
.faq-answer p:last-child{margin-bottom:0}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink);
  color:#fff;
  padding:56px 0;
}
@media (min-width:1024px){.cta-band{padding:80px 0}}
.cta-inner{
  display:grid;
  gap:26px;
  align-items:center;
}
@media (min-width:1024px){
  .cta-inner{grid-template-columns:1.5fr 1fr;gap:48px}
}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,36px);line-height:1.3}
.cta-band p{color:rgba(255,255,255,.76);margin-top:14px;max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:1023px){.cta-actions .btn{width:100%}}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:34px 40px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}}
.footer-brand .logo{color:#fff}
.footer-desc{margin-top:16px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:38ch}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:14px;
  letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:10px}
.footer-col a{
  font-size:14.5px;
  color:rgba(255,255,255,.72);
  display:inline-block;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-contact p{font-size:14.5px;margin:0 0 10px;color:rgba(255,255,255,.72)}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  justify-content:space-between;
}
.footer-bottom p{margin:0;font-size:13.5px;color:rgba(255,255,255,.6)}
.back-top{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.24);
  font-size:13.5px;
  color:rgba(255,255,255,.8);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.back-top:hover{background:var(--accent);border-color:var(--accent);color:var(--ink)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
    --ink:#12312B;
    --accent:#C8F135;
    --bg:#F6F3EC;
    --surface:#FFFFFF;
    --text:#1B211E;
    --muted:#5A6560;
    --line:#E4E1D8;
    --warn:#E4572E;
    --radius-card:16px;
    --radius-btn:10px;
    --radius-img:14px;
    --shadow-soft:0 1px 2px rgba(18,49,43,.06);
    --shadow-hover:0 12px 28px -12px rgba(18,49,43,.28);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::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:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:17px;
    line-height:1.85;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media (min-width:768px){.container{padding-left:24px;padding-right:24px;}}
  @media (min-width:1280px){.container{max-width:1280px;padding-left:32px;padding-right:32px;}}

  /* ---------- Header / Nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:#fff;
    border-bottom:1px solid var(--line);
    transition:box-shadow .24s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:0 2px 12px rgba(0,0,0,.05);}
  .nav-wrap{display:flex;align-items:center;gap:24px;height:72px;position:relative;}
  .logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--ink);flex:0 0 auto;}
  .logo-mark{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;background:var(--ink);border-radius:9px;flex:0 0 auto;}
  .logo-mark svg{width:22px;height:22px;}
  .main-nav{display:none;}
  .main-nav a{
    position:relative;
    font-size:15px;font-weight:500;color:var(--text);
    padding:6px 2px;
    transition:color .2s var(--ease);
  }
  .main-nav a::after{
    content:"";position:absolute;left:0;right:100%;bottom:-4px;height:2px;background:var(--accent);
    transition:right .24s var(--ease);
  }
  .main-nav a:hover{color:var(--ink);}
  .main-nav a:hover::after{right:0;}
  .main-nav a.active{font-weight:600;color:var(--ink);}
  .main-nav a.active::after{right:0;}
  .nav-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
  .search-form{position:relative;display:none;}
  .search-form input{
    width:210px;height:42px;border-radius:999px;
    border:1px solid var(--line);background:var(--bg);
    padding:0 40px 0 16px;font-size:14px;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  }
  .search-form input::placeholder{color:var(--muted);}
  .search-form input:focus{outline:none;background:#fff;border-color:var(--accent);box-shadow:0 0 0 2px rgba(200,241,53,.55);}
  .search-icon{position:absolute;right:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--muted);pointer-events:none;}
  .nav-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
    background:#fff;cursor:pointer;
  }
  .nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;}
  .nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .24s var(--ease),top .24s var(--ease);}
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}
  .nav-toggle[aria-expanded="true"] span{background:transparent;}
  .nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
  .nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}

  @media (min-width:1024px){
    .main-nav{display:flex;align-items:center;gap:26px;}
    .search-form{display:block;}
    .nav-toggle{display:none;}
  }
  @media (max-width:1023px){
    .main-nav{
      position:fixed;top:72px;right:0;bottom:0;width:84%;max-width:320px;
      background:#fff;flex-direction:column;align-items:flex-start;gap:4px;
      padding:20px 24px 32px;
      transform:translateX(102%);
      transition:transform .28s var(--ease);
      box-shadow:-16px 0 36px -20px rgba(18,49,43,.45);
      overflow-y:auto;display:flex;
    }
    .main-nav a{width:100%;padding:14px 0;border-bottom:1px solid var(--line);font-size:16px;}
    .main-nav a::after{display:none;}
    .main-nav a.active{color:var(--ink);font-weight:700;}
    .main-nav a.active::before{content:"";display:inline-block;width:8px;height:8px;background:var(--accent);border-radius:50%;margin-right:10px;vertical-align:middle;}
    .site-header.nav-open .main-nav{transform:translateX(0);}
    .nav-right .search-form{display:none;}
    .nav-right .btn{padding:0 16px;font-size:14px;}
  }

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  }
  .btn-primary{background:var(--ink);color:#fff;}
  .btn-primary:hover{background:var(--accent);color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-hover);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);}
  .btn-ghost:hover{border-color:var(--accent);background:var(--bg);transform:translateY(-1px);}
  .btn-block{width:100%;}
  @media (max-width:639px){.btn-block-mobile{width:100%;}}

  .link-underline{position:relative;display:inline-block;font-weight:600;color:var(--ink);}
  .link-underline::after{content:"";position:absolute;left:0;bottom:-3px;width:100%;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);}
  .link-underline:hover::after{transform:scaleX(1);}

  /* ---------- Hero ---------- */
  .hero{position:relative;padding:56px 0 52px;background:var(--bg);overflow:hidden;}
  .hero-grid{display:grid;gap:32px;}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;}
  .breadcrumb a{color:var(--muted);transition:color .2s var(--ease);}
  .breadcrumb a:hover{color:var(--ink);}
  .breadcrumb span.sep{color:var(--line);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
    color:var(--ink);background:rgba(200,241,53,.55);
    border-radius:999px;padding:6px 14px;margin-bottom:18px;
  }
  .hero h1{
    font-size:clamp(30px,4.4vw,48px);
    line-height:1.22;letter-spacing:-.01em;font-weight:800;
    max-width:18em;
  }
  .hero-lead{margin-top:18px;font-size:17px;line-height:1.85;color:var(--muted);max-width:640px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:26px;font-size:13px;color:var(--muted);}
  .hero-meta li{position:relative;padding-left:16px;}
  .hero-meta li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;background:var(--accent);border-radius:50%;}
  .hero-visual{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-soft);background:#fff;}
  .hero-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}
  @media (min-width:1024px){
    .hero{padding:76px 0 72px;}
    .hero-grid{grid-template-columns:1.05fr .95fr;align-items:center;gap:56px;}
  }

  /* ---------- Section base ---------- */
  .section{padding:56px 0;}
  @media (min-width:768px){.section{padding:72px 0;}}
  @media (min-width:1024px){.section{padding:96px 0;}}
  .section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .section-head{max-width:760px;margin-bottom:32px;}
  .section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;letter-spacing:-.005em;}
  .section-head p{margin-top:14px;color:var(--muted);font-size:16px;}
  .num-label{font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:12px;}

  /* ---------- Comparison table ---------- */
  .table-scroll{overflow-x:auto;border-radius:var(--radius-card);box-shadow:var(--shadow-soft);}
  .cmp-table{width:100%;min-width:760px;border-collapse:separate;border-spacing:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;}
  .cmp-table th,.cmp-table td{padding:16px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7;}
  .cmp-table thead th{background:var(--bg);font-weight:600;font-size:14px;color:var(--ink);letter-spacing:.02em;}
  .cmp-table tbody tr:last-child td{border-bottom:none;}
  .cmp-table tbody tr{transition:background .2s var(--ease);}
  .cmp-table tbody tr:hover{background:var(--bg);}
  .cmp-table td:first-child,.cmp-table th:first-child{font-weight:600;color:var(--ink);width:148px;}
  .cmp-table td .tag-recommend{display:inline-block;margin-top:6px;font-size:12px;font-weight:600;color:var(--ink);background:rgba(200,241,53,.6);border-radius:999px;padding:2px 10px;}
  .table-note{margin-top:14px;font-size:13px;color:var(--muted);}

  /* ---------- FAQ ---------- */
  .faq-group + .faq-group{margin-top:40px;}
  .faq-group-title{display:flex;align-items:center;gap:12px;font-size:19px;margin-bottom:18px;}
  .faq-group-title i{display:inline-block;width:26px;height:26px;border-radius:8px;background:var(--ink);color:var(--accent);font-style:normal;font-size:13px;font-weight:700;line-height:26px;text-align:center;flex:0 0 auto;}
  .faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);margin-bottom:14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
  .faq-item:hover{border-color:rgba(200,241,53,.9);}
  .faq-item[open]{border-color:rgba(200,241,53,.9);box-shadow:var(--shadow-hover);}
  .faq-q{
    display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
    padding:20px 24px;cursor:pointer;font-size:17px;font-weight:600;line-height:1.8;color:var(--ink);
    list-style:none;
  }
  .faq-q::-webkit-details-marker{display:none;}
  .faq-icon{position:relative;width:20px;height:20px;flex:0 0 auto;margin-top:6px;}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--ink);transform:translate(-50%,-50%);transition:transform .2s var(--ease);}
  .faq-icon::before{width:14px;height:2px;}
  .faq-icon::after{width:2px;height:14px;}
  .faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);}
  .faq-a{position:relative;margin:0 24px 0 24px;padding:2px 0 22px 18px;font-size:16px;color:var(--muted);line-height:1.85;border-left:2px solid var(--accent);}
  .faq-a p + p{margin-top:12px;}
  .faq-a strong{color:var(--ink);}

  /* ---------- Checklist ---------- */
  .check-grid{display:grid;gap:32px;align-items:center;}
  .check-visual{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-soft);}
  .check-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;}
  .check-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);}
  .check-list li:last-child{border-bottom:none;}
  .check-list .tick{width:26px;height:26px;border-radius:8px;background:rgba(200,241,53,.7);color:var(--ink);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:0 0 auto;margin-top:4px;}
  .check-list h3{font-size:17px;margin-bottom:4px;}
  .check-list p{font-size:15px;color:var(--muted);}
  @media (min-width:1024px){.check-grid{grid-template-columns:1fr 1fr;gap:64px;}}

  /* ---------- Form ---------- */
  .form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-soft);max-width:640px;}
  .field{margin-bottom:18px;}
  .field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;font-weight:600;letter-spacing:.02em;}
  .field input,.field select,.field textarea{
    width:100%;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-btn);
    padding:12px 14px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  }
  .field textarea{min-height:118px;resize:vertical;line-height:1.75;}
  .field input:focus,.field select:focus,.field textarea:focus{outline:none;background:#fff;border-color:var(--accent);box-shadow:0 0 0 2px rgba(200,241,53,.5);}
  .field-error input,.field-error textarea{border-color:var(--warn);}
  .error-text{display:none;margin-top:6px;font-size:13px;color:var(--warn);}
  .field-error .error-text{display:block;}
  .form-hint{font-size:13px;color:var(--muted);margin-top:14px;}

  /* ---------- CTA ---------- */
  .cta-band{position:relative;background:var(--ink);color:#fff;overflow:hidden;}
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;
    opacity:.22;
  }
  .cta-inner{position:relative;padding:64px 0;}
  .cta-inner h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.3;}
  .cta-inner p{color:rgba(255,255,255,.75);margin-top:14px;max-width:620px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
  .cta-band .btn-primary{background:var(--accent);color:var(--ink);}
  .cta-band .btn-primary:hover{background:#fff;color:var(--ink);}
  .cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.35);}
  .cta-band .btn-ghost:hover{background:rgba(255,255,255,.1);border-color:var(--accent);}
  @media (min-width:1024px){.cta-inner{padding:88px 0;}}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 0;font-size:15px;}
  .footer-grid{display:grid;gap:36px;}
  .footer-brand .logo{color:#fff;}
  .footer-desc{margin-top:16px;max-width:320px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);}
  .footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
  .footer-col ul li{margin-bottom:10px;}
  .footer-col a{color:rgba(255,255,255,.72);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block;}
  .footer-col a:hover{color:var(--accent);transform:translateX(2px);}
  .footer-contact p{margin-bottom:10px;font-size:14px;color:rgba(255,255,255,.68);}
  .footer-bottom{
    margin-top:48px;border-top:1px solid rgba(255,255,255,.14);
    padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.6);
  }
  .back-top{color:rgba(255,255,255,.75);border:1px solid rgba(255,255,255,.24);border-radius:999px;padding:8px 16px;font-size:13px;transition:color .2s var(--ease),border-color .2s var(--ease);}
  .back-top:hover{color:var(--accent);border-color:var(--accent);}
  @media (min-width:768px){
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;}
  }
  @media (min-width:1024px){.site-footer{padding-top:80px;}}

  /* ---------- Motion ---------- */
  .reveal{opacity:0;transform:translateY(10px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
  .reveal.is-in{opacity:1;transform:none;}
  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;}
  }