/* roulang page: index */
:root{
  --ink:#101114;
  --graphite:#1B1D22;
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --lime:#C6F24E;
  --lime-hover:#AEDC36;
  --coral:#FF6A4D;
  --muted:#6B6E76;
  --line:#E3E1DA;
  --line-strong:#C9C6BC;
  --radius-card:20px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(16,17,20,.04);
  --shadow-2:0 12px 32px -8px rgba(16,17,20,.12);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Space Grotesk","Inter",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,monospace;
  --space-section:104px;
}
*,*::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(--ink);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.18;color:var(--ink);}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
.section{padding:var(--space-section) 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(1.75rem,3vw,2.5rem);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:700;margin-bottom:16px;
}
.eyebrow::before{content:"";width:48px;height:2px;background:var(--lime);display:block;}
.section-sub{color:var(--muted);font-size:1rem;max-width:56ch;margin-top:14px;}
.text-link{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.9375rem;color:var(--ink);border-bottom:2px solid transparent;padding-bottom:2px;}
.text-link svg{transition:transform .2s ease;}
.text-link:hover{border-bottom-color:var(--lime);}
.text-link:hover svg{transform:translateX(4px);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 26px;border-radius:var(--radius-btn);
  font-size:.9375rem;font-weight:700;line-height:1;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .2s ease,box-shadow .24s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--lime-hover);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-dark{background:var(--ink);color:#fff;}
.btn-dark:hover{background:#000;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:var(--lime);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-sm{padding:11px 20px;font-size:.875rem;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:.75rem;font-weight:700;letter-spacing:.04em;line-height:1.6;
  border:1px solid var(--line);background:#fff;color:var(--muted);
}
.badge-coral{border-color:var(--coral);color:var(--coral);background:transparent;}
.badge-lime{background:var(--lime);border-color:var(--lime);color:var(--ink);}

/* ---------- header / dock ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;padding:16px 24px 0;pointer-events:none;}
.dock{
  pointer-events:auto;position:relative;
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:20px;
  height:64px;padding:0 10px 0 20px;
  background:rgba(246,245,241,.82);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:999px;
  box-shadow:var(--shadow-1);
  transition:height .28s ease,box-shadow .28s ease,background-color .28s ease;
}
.site-header.is-scrolled .dock{height:56px;box-shadow:var(--shadow-2);background:rgba(246,245,241,.95);}
.dock-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1rem;letter-spacing:-.01em;flex:none;}
.logo-mark{width:26px;height:26px;border-radius:9px;background:var(--ink);position:relative;display:block;flex:none;}
.logo-mark::after{content:"";position:absolute;inset:8px;border-radius:3px;background:var(--lime);}
.logo-text{white-space:nowrap;}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:.9375rem;font-weight:600;color:#3B3E45;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.nav-link:hover{background:rgba(16,17,20,.06);color:var(--ink);}
.nav-link.is-active{background:var(--ink);color:#fff;}
.dock-actions{display:flex;align-items:center;gap:8px;flex:none;}
.icon-btn{
  width:40px;height:40px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  transition:background-color .2s ease,transform .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--lime);border-color:var(--lime);transform:translateY(-1px);}
.menu-btn{display:none;}
.search-pop{
  pointer-events:auto;position:absolute;right:0;top:calc(100% + 12px);
  width:340px;max-width:calc(100vw - 48px);
  background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-2);
  padding:14px;opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.search-pop.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.search-form{display:flex;gap:8px;}
.search-form input{
  flex:1;min-width:0;padding:11px 14px;border:1px solid var(--line);border-radius:12px;
  font-size:.9375rem;background:var(--bg);color:var(--ink);
}
.search-form input:focus{outline:2px solid var(--lime);outline-offset:1px;border-color:var(--lime);}
.dock-panel{
  pointer-events:auto;display:none;
  max-width:1200px;margin:10px auto 0;
  background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-2);
  padding:16px;
}
.dock-panel.is-open{display:block;}
.dock-panel .nav-link{display:block;padding:14px 16px;border-radius:14px;font-size:1rem;}
.dock-panel .nav-link + .nav-link{margin-top:4px;}
.dock-panel .btn{width:100%;margin-top:12px;}

/* ---------- hero ---------- */
.hero{padding:140px 0 72px;position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-160px;right:-180px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,242,78,.32),rgba(198,242,78,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;position:relative;}
.hero h1{
  font-size:clamp(2.5rem,5.2vw,4.25rem);
  line-height:1.08;letter-spacing:-.02em;margin-bottom:22px;
}
.hero-sub{font-size:1.125rem;color:#3B3E45;max-width:34em;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:var(--font-mono);font-size:.8125rem;color:var(--muted);letter-spacing:.02em;}
.hero-meta span.dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong);display:inline-block;}
.hero-visual{position:relative;}
.hero-visual img{width:100%;height:auto;border-radius:24px;border:1px solid var(--line);box-shadow:var(--shadow-2);object-fit:cover;aspect-ratio:16/12;}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:24px;
  background:linear-gradient(200deg,rgba(16,17,20,0) 45%,rgba(16,17,20,.34) 100%);
  pointer-events:none;
}
.hero-tag{
  position:absolute;left:20px;bottom:20px;z-index:2;
  background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:14px;
  padding:10px 16px;font-size:.8125rem;font-weight:700;color:var(--ink);
  display:flex;align-items:center;gap:8px;
}
.hero-tag i{width:8px;height:8px;border-radius:50%;background:var(--lime);display:inline-block;}

/* ---------- stats ---------- */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:40px 0;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:0 28px;border-left:1px solid var(--line);}
.stat:first-child{border-left:0;padding-left:0;}
.stat-num{font-family:var(--font-mono);font-size:2.25rem;font-weight:700;line-height:1.1;letter-spacing:-.02em;}
.stat-num small{font-size:1rem;font-weight:600;margin-left:2px;}
.stat-label{font-size:.8125rem;color:var(--muted);margin-top:6px;}

/* ---------- shots carousel ---------- */
.shots-wrap{position:relative;}
.shots-track{
  display:flex;gap:24px;overflow-x:auto;
  scroll-snap-type:x mandatory;scroll-behavior:smooth;
  padding:8px 4px 22px;
  scrollbar-width:none;
}
.shots-track::-webkit-scrollbar{display:none;}
.shot{
  flex:0 0 72%;scroll-snap-align:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:14px;box-shadow:var(--shadow-1);
  transition:transform .28s ease,box-shadow .28s ease,opacity .28s ease;
  opacity:.72;
}
.shot.is-current{opacity:1;transform:scale(1.012);box-shadow:var(--shadow-2);}
.shot img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);}
.shot-cap{padding:16px 8px 4px;}
.shot-cap h3{font-size:1.0625rem;margin-bottom:6px;}
.shot-cap p{font-size:.875rem;color:var(--muted);margin:0;}
.shots-nav{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:8px;}
.shots-arrows{display:flex;gap:10px;}
.arrow-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color .2s ease,border-color .2s ease,transform .2s ease;
}
.arrow-btn:hover{background:var(--lime);border-color:var(--lime);transform:translateY(-2px);}
.shots-dots{display:flex;gap:8px;}
.shots-dots button{width:8px;height:8px;border-radius:50%;background:var(--line-strong);transition:width .24s ease,background-color .24s ease;}
.shots-dots button.is-active{width:24px;border-radius:999px;background:var(--ink);}

/* ---------- capabilities ---------- */
.cap{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:48px 0;}
.cap + .cap{border-top:1px solid var(--line);}
.cap.reverse .cap-media{order:2;}
.cap-num{
  font-family:var(--font-mono);font-size:.8125rem;font-weight:700;letter-spacing:.16em;color:var(--muted);
  display:flex;align-items:center;gap:14px;margin-bottom:18px;
}
.cap-num::after{content:"";width:48px;height:2px;background:var(--lime);display:block;}
.cap h3{font-size:clamp(1.375rem,2.2vw,1.75rem);margin-bottom:16px;}
.cap p{color:#3B3E45;}
.cap-list{margin:22px 0 26px;display:grid;gap:12px;}
.cap-list li{display:flex;gap:12px;font-size:.9375rem;color:#3B3E45;align-items:flex-start;}
.cap-list li::before{
  content:"";flex:none;width:18px;height:18px;border-radius:6px;background:var(--lime);margin-top:6px;
}
.cap-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-img);border:1px solid var(--line);box-shadow:var(--shadow-1);}

/* ---------- system requirements ---------- */
.req-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.req-head{display:flex;align-items:center;gap:14px;margin-bottom:20px;}
.req-icon{width:44px;height:44px;border-radius:14px;background:var(--bg);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;flex:none;}
.req-head h3{font-size:1.25rem;}
.req-head span{font-size:.8125rem;color:var(--muted);display:block;font-weight:500;letter-spacing:0;}
.req-rows{display:grid;}
.req-row{display:flex;justify-content:space-between;gap:16px;padding:13px 0;border-top:1px dashed var(--line);font-size:.9375rem;}
.req-row:first-child{border-top:0;}
.req-row dt{color:var(--muted);}
.req-row dd{margin:0;font-weight:600;text-align:right;font-family:var(--font-mono);font-size:.875rem;}
.req-note{margin-top:24px;font-size:.875rem;color:var(--muted);display:flex;align-items:center;gap:10px;}

/* ---------- reviews ---------- */
.reviews{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.review-card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;transition:transform .24s ease,box-shadow .24s ease;
}
.review-card:nth-child(even){transform:translateY(24px);}
.review-card:hover{box-shadow:var(--shadow-2);}
.review-card:nth-child(even):hover{transform:translateY(18px);}
.review-top{display:flex;align-items:center;gap:14px;margin-bottom:16px;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--ink);color:var(--lime);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9375rem;flex:none;
}
.review-name{font-weight:700;font-size:.9375rem;}
.stars{display:flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:.8125rem;color:var(--coral);margin-top:2px;}
.review-text{font-size:.9375rem;color:#3B3E45;margin:0;}
.review-quote{font-family:var(--font-num);font-size:2rem;line-height:1;color:var(--line-strong);margin-bottom:6px;}

/* ---------- download band ---------- */
.download-band{background:var(--graphite);color:#fff;border-radius:28px;padding:56px;position:relative;overflow:hidden;}
.download-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;pointer-events:none;
}
.download-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.download-band h2{color:#fff;font-size:clamp(1.75rem,3vw,2.375rem);margin-bottom:16px;}
.download-band p{color:#B9BCC4;font-size:.9375rem;}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 22px;}
.platform-badges{display:flex;flex-wrap:wrap;gap:10px;}
.pf-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;border:1px solid rgba(255,255,255,.16);
  font-size:.8125rem;color:#DDE0E6;transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.pf-badge:hover{border-color:var(--lime);color:var(--lime);background:rgba(198,242,78,.08);}
.pf-badge svg{flex:none;}
.dl-meta{font-family:var(--font-mono);font-size:.8125rem;color:#8E929B;margin-top:18px;}
.qr-box{
  background:#fff;border-radius:20px;padding:18px;text-align:center;color:var(--ink);
  box-shadow:var(--shadow-2);
}
.qr-box img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:12px;background:var(--bg);}
.qr-cap{font-size:.8125rem;color:var(--muted);margin-top:12px;font-weight:600;}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.news-thumb{overflow:hidden;}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:1.0625rem;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card:hover .news-body h3{text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:3px;text-underline-offset:4px;}
.news-desc{font-size:.875rem;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0;}
.news-foot{margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.news-date{font-family:var(--font-mono);font-size:.75rem;color:var(--muted);}
.news-arrow{width:32px;height:32px;border-radius:50%;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;transition:background-color .2s ease,border-color .2s ease;}
.news-card:hover .news-arrow{background:var(--lime);border-color:var(--lime);}
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  background:#fff;padding:56px 24px;text-align:center;
}
.empty-state strong{display:block;font-size:1.0625rem;margin-bottom:8px;}
.empty-state p{color:var(--muted);font-size:.9375rem;margin-bottom:20px;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:920px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  overflow:hidden;transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow-1);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 60px 22px 26px;font-weight:700;font-size:1.0625rem;
  display:flex;align-items:center;gap:14px;
  transition:background-color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#FBFAF7;}
.faq-item summary::before{
  content:"";width:3px;height:20px;border-radius:2px;background:transparent;flex:none;
  transition:background-color .24s ease;
}
.faq-item[open] summary::before{background:var(--lime);}
.faq-item summary::after{
  content:"";position:absolute;right:26px;top:50%;width:10px;height:10px;
  border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);
  transform:translateY(-70%) rotate(45deg);transition:transform .28s ease;
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg);}
.faq-body{padding:0 26px 24px 43px;color:#3B3E45;font-size:.9375rem;}

/* ---------- cta ---------- */
.cta-band{background:var(--ink);color:#fff;position:relative;overflow:hidden;padding:88px 0;}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;pointer-events:none;
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:clamp(1.75rem,3vw,2.375rem);max-width:22ch;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#B9BCC4;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px;}
.footer-brand .dock-logo{color:#fff;margin-bottom:18px;}
.footer-brand .logo-mark{background:#23262C;}
.footer-brand p{font-size:.875rem;color:#8E929B;max-width:30ch;}
.socials{display:flex;gap:10px;margin-top:20px;}
.social-btn{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.14);
  display:inline-flex;align-items:center;justify-content:center;color:#B9BCC4;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.social-btn:hover{color:var(--ink);background:var(--lime);border-color:var(--lime);}
.footer-col h4{font-size:.8125rem;letter-spacing:.14em;text-transform:uppercase;color:#fff;margin-bottom:18px;font-weight:700;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a,.footer-col li{font-size:.9375rem;color:#B9BCC4;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--lime);text-underline-offset:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:24px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.8125rem;color:#8E929B;
}
.footer-bottom .mono{letter-spacing:.02em;}

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

/* ---------- responsive ---------- */
@media screen and (max-width:1199px){
  :root{--space-section:84px;}
  .hero-grid{gap:44px;}
  .cap{gap:44px;}
  .download-band{padding:44px;}
}
@media screen and (max-width:991px){
  :root{--space-section:72px;}
  .dock-nav{display:none;}
  .menu-btn{display:inline-flex;}
  .hero{padding:128px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{order:2;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .stat{padding:0 20px;}
  .stat:nth-child(3){border-left:0;padding-left:0;}
  .cap{grid-template-columns:1fr;gap:28px;padding:40px 0;}
  .cap.reverse .cap-media{order:0;}
  .req-grid{grid-template-columns:1fr;}
  .review-grid{grid-template-columns:1fr;}
  .review-card:nth-child(even){transform:none;}
  .review-card:nth-child(even):hover{transform:translateY(-4px);}
  .download-inner{grid-template-columns:1fr;gap:32px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .shot{flex:0 0 84%;}
}
@media screen and (max-width:767px){
  :root{--space-section:56px;}
  .site-header{padding:12px 12px 0;}
  .container{padding:0 20px;}
  .dock{height:56px;padding:0 8px 0 14px;gap:10px;}
  .site-header.is-scrolled .dock{height:52px;}
  .logo-text{font-size:.9375rem;}
  .dock-actions .btn{display:none;}
  .hero{padding:110px 0 48px;}
  .hero h1{font-size:clamp(2rem,8vw,2.6rem);}
  .hero-sub{font-size:1rem;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .stat-num{font-size:1.75rem;}
  .shot{flex:0 0 90%;}
  .shots-nav{flex-direction:row;}
  .download-band{padding:32px 24px;border-radius:22px;}
  .dl-actions .btn{width:100%;}
  .news-grid{grid-template-columns:1fr;}
  .section-head{margin-bottom:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
  .faq-body{padding-left:26px;}
  .card{padding:22px;}
}
@media screen and (max-width:519px){
  .search-pop{width:calc(100vw - 24px);right:-8px;}
  .stats-grid{grid-template-columns:1fr;}
  .stat{border-left:0;padding:0;border-top:1px solid var(--line);padding-top:20px;}
  .stat:first-child{border-top:0;padding-top:0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .will-reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#101114;
  --graphite:#1B1D22;
  --bg:#F6F5F1;
  --paper:#FFFFFF;
  --lime:#C6F24E;
  --lime-hover:#AEDC36;
  --coral:#FF6A4D;
  --muted:#6B6E76;
  --line:#E3E1DA;
  --line-strong:#C9C6BC;
  --radius-card:20px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(16,17,20,.04);
  --shadow-2:0 12px 32px -8px rgba(16,17,20,.12);
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-num:"Space Grotesk","Inter","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

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

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

body{
  margin:0;
  padding-top:96px;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:1rem;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;display:block;border-style:none;}

a{color:inherit;text-decoration:none;transition:color .22s ease,background-color .22s ease,border-color .22s ease;}

a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:2px;
  border-radius:6px;
}

button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}

h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-.01em;font-weight:700;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol,dl{margin:0;padding:0;list-style:none;}

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

.mono{font-family:var(--font-num);letter-spacing:0;}

/* ---------- header / dock ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:200;
  padding:16px 24px;
  pointer-events:none;
}

.dock{
  pointer-events:auto;
  position:relative;
  max-width:var(--container);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:10px;
  height:64px;
  padding:0 12px 0 18px;
  background:rgba(246,245,241,.84);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:var(--shadow-1);
  transition:height .28s ease-out,box-shadow .28s ease-out,background-color .28s ease-out;
}

.site-header.is-scrolled .dock{
  height:56px;
  box-shadow:var(--shadow-2);
  background:rgba(246,245,241,.94);
}

.dock-logo{
  display:flex;
  align-items:center;
  gap:9px;
  font-weight:800;
  font-size:1rem;
  letter-spacing:-.01em;
  white-space:nowrap;
  color:var(--ink);
}

.logo-mark{
  width:20px;height:20px;
  flex:0 0 20px;
  border-radius:6px;
  background:var(--lime);
  position:relative;
  display:inline-block;
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:6px;
  border-radius:2px;
  background:var(--ink);
}

.dock-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin:0 auto;
}

.nav-link{
  display:inline-block;
  padding:8px 15px;
  font-size:.9375rem;
  font-weight:600;
  color:#41444B;
  border-radius:999px;
  white-space:nowrap;
}
.nav-link:hover{background:rgba(16,17,20,.06);color:var(--ink);}
.nav-link.is-active{background:var(--ink);color:#F6F5F1;}
.nav-link.is-active:hover{background:var(--graphite);color:#fff;}
.nav-link:active{transform:translateY(1px);}

.dock-cta{
  display:inline-block;
  padding:10px 18px;
  border-radius:999px;
  background:var(--lime);
  color:var(--ink);
  font-weight:700;
  font-size:.9375rem;
  white-space:nowrap;
  transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.dock-cta:hover{background:var(--lime-hover);transform:translateY(-1px);box-shadow:0 8px 18px -8px rgba(16,17,20,.4);}
.dock-cta:active{transform:translateY(1px);box-shadow:none;}

.nav-toggle{
  display:none;
  margin-left:auto;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--paper);
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  position:relative;
  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;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--radius-btn);
  font-weight:700;
  font-size:.9688rem;
  line-height:1.2;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(1px);box-shadow:none;}

.btn-primary{
  background:var(--lime);
  color:var(--ink);
}
.btn-primary:hover{background:var(--lime-hover);box-shadow:0 12px 24px -10px rgba(16,17,20,.45);}

.btn-ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--ink);
}
.btn-ghost:hover{background:rgba(16,17,20,.05);box-shadow:var(--shadow-2);}

.btn-light{
  background:var(--paper);
  color:var(--ink);
  border-color:var(--line);
}
.btn-light:hover{background:#fff;border-color:var(--line-strong);box-shadow:var(--shadow-2);}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:700;
  font-size:.9375rem;
  color:var(--ink);
  border-bottom:2px solid var(--lime);
  padding-bottom:2px;
}
.text-link:hover{background:var(--lime);border-bottom-color:var(--lime);}

/* ---------- generic section bits ---------- */
.section{padding:80px 0;}
.section-tight{padding:56px 0;}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
  flex-wrap:wrap;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--muted);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:48px;height:3px;
  background:var(--lime);
  border-radius:2px;
}

h2.section-title{
  font-size:clamp(1.6rem,2.6vw,2.2rem);
  font-weight:700;
  letter-spacing:-.015em;
}

.section-desc{
  color:var(--muted);
  font-size:.9688rem;
  max-width:44em;
  margin-top:12px;
}

.num-tag{
  font-family:var(--font-num);
  font-size:.8125rem;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--muted);
}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  padding:28px 0 0;
}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:.8125rem;
  color:var(--muted);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li + li::before{content:"/";color:#B7B4AB;}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .current{color:var(--ink);font-weight:600;}

/* ---------- hero ---------- */
.hero{
  padding:32px 0 56px;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:56px;
  align-items:center;
}

.hero h1{
  font-size:clamp(2rem,3.9vw,3.15rem);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.14;
  margin-bottom:20px;
}

.hero-lead{
  font-size:1.0625rem;
  color:#4A4D55;
  max-width:36em;
  margin-bottom:24px;
}

.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:28px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--paper);
  font-size:.8125rem;
  font-weight:600;
  color:#4A4D55;
}
.chip.is-coral{
  border-color:rgba(255,106,77,.55);
  color:#C8442A;
  background:rgba(255,106,77,.07);
}
.chip.is-lime{
  border-color:transparent;
  background:var(--lime);
  color:var(--ink);
}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-bottom:22px;
}

.hero-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:.8125rem;
  color:var(--muted);
  font-family:var(--font-num);
}
.hero-meta .dot{color:#C2BFB6;}

.hero-figure{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
  background:var(--graphite);
  aspect-ratio:16/11;
}
.hero-figure img{
  width:100%;height:100%;
  object-fit:cover;
  transform:scale(1.01);
}
.hero-figure::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(200deg,rgba(16,17,20,0) 42%,rgba(16,17,20,.62) 100%);
  pointer-events:none;
}
.hero-figure .fig-caption{
  position:absolute;
  left:20px;bottom:18px;
  z-index:2;
  color:#F6F5F1;
  font-size:.8125rem;
  font-weight:600;
  letter-spacing:.02em;
  display:flex;
  align-items:center;
  gap:8px;
}
.hero-figure .fig-caption .mono{
  background:var(--lime);
  color:var(--ink);
  padding:2px 8px;
  border-radius:6px;
  font-size:.75rem;
  font-weight:700;
}

/* ---------- stats ---------- */
.stats{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  padding:26px 0;
}
.stat{
  padding:0 20px;
  border-left:1px solid var(--line);
}
.stat:first-child{border-left:0;padding-left:0;}
.stat-value{
  font-family:var(--font-num);
  font-size:2.25rem;
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.02em;
}
.stat-value span{font-size:1rem;font-weight:600;color:var(--muted);margin-left:2px;}
.stat-label{
  font-size:.8125rem;
  color:var(--muted);
  margin-top:6px;
}

/* ---------- category layout ---------- */
.cat-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:56px;
  align-items:start;
}

.side-nav{
  position:sticky;
  top:96px;
}
.side-nav .side-title{
  font-size:.75rem;
  letter-spacing:.12em;
  font-weight:700;
  color:var(--muted);
  text-transform:uppercase;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
  margin-bottom:14px;
}
.side-nav ul{display:flex;flex-direction:column;gap:2px;}
.side-nav a{
  display:flex;
  gap:10px;
  padding:9px 10px;
  border-radius:10px;
  font-size:.9063rem;
  font-weight:600;
  color:#4A4D55;
}
.side-nav a .n{
  font-family:var(--font-num);
  font-size:.75rem;
  color:var(--muted);
  padding-top:3px;
}
.side-nav a:hover{background:rgba(16,17,20,.05);color:var(--ink);}
.side-nav a.is-active{background:var(--paper);color:var(--ink);box-shadow:var(--shadow-1);border:1px solid var(--line);}
.side-nav a.is-active .n{color:#3E7A0B;}

.side-card{
  margin-top:22px;
  background:var(--ink);
  color:#F6F5F1;
  border-radius:var(--radius-card);
  padding:22px 20px;
}
.side-card h3{font-size:1rem;font-weight:700;margin-bottom:8px;}
.side-card p{font-size:.8125rem;color:#B9BCC4;line-height:1.7;margin-bottom:14px;}
.side-card .side-btn{
  display:block;
  text-align:center;
  padding:10px 14px;
  border-radius:10px;
  background:var(--lime);
  color:var(--ink);
  font-weight:700;
  font-size:.875rem;
}
.side-card .side-btn:hover{background:var(--lime-hover);}

/* ---------- list cards ---------- */
.block-group + .block-group{margin-top:56px;}

.block-head{
  display:flex;
  align-items:baseline;
  gap:14px;
  margin-bottom:22px;
}
.block-head .num-tag{
  font-size:.9375rem;
  color:var(--ink);
  background:var(--lime);
  padding:3px 9px;
  border-radius:8px;
  font-weight:700;
}
.block-head h2{
  font-size:clamp(1.35rem,2.1vw,1.75rem);
  font-weight:700;
  letter-spacing:-.012em;
}
.block-head .block-note{
  font-size:.8125rem;
  color:var(--muted);
  margin-left:auto;
  display:none;
}

.list-card{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:26px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px;
  box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.list-card + .list-card{margin-top:18px;}
.list-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-2);
}
.list-thumb{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  aspect-ratio:3/2;
  background:#EDEBE4;
}
.list-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease-out;
}
.list-card:hover .list-thumb img{transform:scale(1.04);}

.list-body{display:flex;flex-direction:column;justify-content:center;}
.list-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px;}
.tag{
  display:inline-block;
  padding:3px 10px;
  border-radius:999px;
  font-size:.75rem;
  font-weight:600;
  color:var(--muted);
  background:var(--bg);
  border:1px solid var(--line);
}
.tag.is-coral{color:#C8442A;border-color:rgba(255,106,77,.5);background:rgba(255,106,77,.07);}
.list-body h3{
  font-size:1.1875rem;
  font-weight:700;
  margin-bottom:8px;
  letter-spacing:-.01em;
}
.list-body p{
  font-size:.9375rem;
  color:#54575F;
  line-height:1.78;
  margin-bottom:14px;
}
.list-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:.8125rem;
  color:var(--muted);
}
.list-foot .mono{font-size:.8125rem;}

/* ---------- requirements ---------- */
.req-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.req-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-1);
}
.req-card h3{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.125rem;
  margin-bottom:6px;
}
.plat-dot{
  width:26px;height:26px;
  border-radius:8px;
  background:var(--lime);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--ink);
  flex:0 0 26px;
}
.req-card > p{font-size:.875rem;color:var(--muted);margin-bottom:14px;}
.req-list{display:flex;flex-direction:column;gap:0;}
.req-row{
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding:11px 0;
  border-bottom:1px dashed var(--line);
  font-size:.9063rem;
}
.req-row:last-child{border-bottom:0;padding-bottom:0;}
.req-row dt{color:var(--muted);}
.req-row dd{margin:0;font-weight:600;text-align:right;}
.req-note{
  margin-top:16px;
  padding:16px 20px;
  border-radius:14px;
  background:rgba(198,242,78,.22);
  border:1px solid rgba(198,242,78,.6);
  font-size:.875rem;
  color:#3A420F;
}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px;}
.faq-item{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{
  border-color:var(--line-strong);
  box-shadow:var(--shadow-2);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 22px;
  font-weight:700;
  font-size:1rem;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  width:3px;
  height:20px;
  border-radius:2px;
  background:var(--line);
  flex:0 0 3px;
  transition:background-color .22s ease;
}
.faq-item[open] summary::before{background:var(--lime);}
.faq-item summary .arrow{
  margin-left:auto;
  width:24px;height:24px;
  flex:0 0 24px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:50%;
  transition:transform .26s ease-out,background-color .26s ease;
}
.faq-item[open] summary .arrow{transform:rotate(180deg);background:var(--lime);border-color:var(--lime);}
.faq-answer{
  padding:0 22px 20px 39px;
  color:#54575F;
  font-size:.9375rem;
  line-height:1.82;
}

/* ---------- cta ---------- */
.cta-band{
  position:relative;
  background:var(--ink);
  color:#F6F5F1;
  border-radius:24px;
  padding:48px 48px;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
}
.cta-text{position:relative;z-index:1;max-width:34em;}
.cta-text h2{
  font-size:clamp(1.5rem,2.6vw,2.05rem);
  font-weight:800;
  letter-spacing:-.015em;
  margin-bottom:10px;
}
.cta-text p{color:#B9BCC4;font-size:.9375rem;margin:0;}
.cta-actions{
  position:relative;z-index:1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
}
.cta-actions .btn-primary{box-shadow:0 14px 28px -14px rgba(198,242,78,.8);}
.cta-meta{
  position:relative;
  z-index:1;
  width:100%;
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  padding-top:22px;
  margin-top:6px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:.8125rem;
  color:#8C9099;
  font-family:var(--font-num);
}
.cta-meta .k{color:#D6D8DD;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:88px;
  background:var(--ink);
  color:#B9BCC4;
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .dock-logo{
  color:#F6F5F1;
  margin-bottom:14px;
}
.footer-brand p{
  font-size:.875rem;
  line-height:1.8;
  color:#9A9EA6;
  max-width:24em;
  margin-bottom:18px;
}
.socials{display:flex;gap:10px;}
.social-btn{
  width:36px;height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:11px;
  border:1px solid rgba(255,255,255,.14);
  color:#B9BCC4;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.social-btn:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);transform:translateY(-2px);}

.footer-col h4{
  font-size:.875rem;
  font-weight:700;
  color:#F6F5F1;
  letter-spacing:.02em;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:.875rem;line-height:1.7;color:#9A9EA6;}
.footer-col a{color:#B9BCC4;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  padding-top:22px;
  font-size:.8125rem;
  color:#82868E;
}
.footer-bottom .mono{color:#82868E;}

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

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .cat-layout{grid-template-columns:210px minmax(0,1fr);gap:40px;}
  .hero-grid{gap:40px;}
}

@media (max-width:991px){
  body{padding-top:88px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-figure{aspect-ratio:16/9;}
  .cat-layout{grid-template-columns:1fr;gap:32px;}
  .side-nav{position:static;}
  .side-nav ul{
    flex-direction:row;
    flex-wrap:wrap;
    gap:8px;
  }
  .side-nav a{
    padding:7px 14px;
    border:1px solid var(--line);
    border-radius:999px;
    background:var(--paper);
    font-size:.8438rem;
  }
  .side-nav a .n{display:none;}
  .side-nav a.is-active{border-color:var(--ink);background:var(--ink);color:#F6F5F1;box-shadow:none;}
  .side-card{margin-top:18px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px 0;padding:24px 0;}
  .stat:nth-child(3){border-left:0;padding-left:0;}
  .req-grid{grid-template-columns:1fr;}
  .list-card{grid-template-columns:200px minmax(0,1fr);gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:36px 32px;}
}

@media (max-width:767px){
  body{padding-top:84px;font-size:.9688rem;}
  .site-header{padding:12px 16px;}
  .dock{height:56px;padding:0 10px 0 14px;border-radius:22px;}
  .site-header.is-scrolled .dock{height:52px;}
  .dock-logo{font-size:.9375rem;}
  .logo-mark{width:18px;height:18px;flex-basis:18px;}
  .nav-toggle{display:inline-flex;}
  .dock-cta{display:none;}
  .dock-nav{
    display:none;
    position:absolute;
    top:calc(100% + 10px);
    left:0;right:0;
    margin:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:10px;
    background:rgba(255,255,255,.98);
    border:1px solid var(--line);
    border-radius:20px;
    box-shadow:var(--shadow-2);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
  }
  .dock.is-open .dock-nav{display:flex;}
  .nav-link{padding:12px 14px;border-radius:12px;font-size:.9375rem;}
  .nav-link.is-active{background:var(--lime);color:var(--ink);}

  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section-tight{padding:40px 0;}
  .hero{padding:20px 0 40px;}
  .hero h1{font-size:clamp(1.75rem,7vw,2.25rem);}
  .hero-lead{font-size:1rem;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .breadcrumb{padding-top:20px;}

  .stats-grid{grid-template-columns:1fr 1fr;}
  .stat{padding:0 14px;}
  .stat-value{font-size:1.75rem;}

  .list-card{grid-template-columns:1fr;gap:16px;padding:16px;}
  .list-thumb{aspect-ratio:16/9;}
  .list-body h3{font-size:1.0625rem;}
  .list-body p{font-size:.9063rem;}

  .block-group + .block-group{margin-top:40px;}
  .block-head .block-note{display:none;}

  .cta-band{padding:28px 22px;border-radius:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .cta-meta{gap:12px;font-size:.75rem;}

  .faq-item summary{padding:16px 18px;font-size:.9688rem;}
  .faq-answer{padding:0 18px 18px 35px;}

  .site-footer{padding:48px 0 22px;margin-top:56px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{font-size:.75rem;}
}

@media (max-width:519px){
  .hero-meta{font-size:.75rem;}
  .chip{font-size:.75rem;padding:5px 11px;}
  .stats-grid{grid-template-columns:1fr;gap:0;}
  .stat{border-left:0;padding:14px 0;border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:0;}
  .stat:first-child{padding-top:0;}
}

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

/* roulang page: article */
:root{
  --ink:#101114;
  --ink-2:#1B1D22;
  --bg:#F6F5F1;
  --paper:#FFFFFF;
  --lime:#C6F24E;
  --lime-dark:#AEDC36;
  --coral:#FF6A4D;
  --muted:#6B6E76;
  --line:#E3E1DA;
  --line-dark:rgba(255,255,255,.10);
  --r-card:20px;
  --r-btn:12px;
  --r-img:16px;
  --shadow-sm:0 1px 2px rgba(16,17,20,.04);
  --shadow-md:0 12px 32px -8px rgba(16,17,20,.12);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--ink);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0;}
ul,ol{padding-left:0;list-style:none;}
.mono{font-family:var(--font-mono);letter-spacing:-.01em;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:768px){.container{padding:0 32px;}}
@media (min-width:1200px){.container{padding:0 40px;}}

/* ---------- Dock 导航 ---------- */
.dock-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  display:flex;
  justify-content:center;
  padding:16px 24px;
  pointer-events:none;
  transition:padding .3s ease;
}
.dock-header.is-scrolled{padding-top:12px;}
.dock-bar{
  pointer-events:auto;
  position:relative;
  width:100%;
  max-width:1080px;
  height:64px;
  display:flex;
  align-items:center;
  gap:24px;
  padding:0 10px 0 22px;
  background:rgba(246,245,241,.82);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:var(--shadow-sm);
  transition:height .3s ease,box-shadow .3s ease;
}
.dock-header.is-scrolled .dock-bar{height:56px;box-shadow:var(--shadow-md);}
.dock-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  font-size:1.0625rem;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.logo-mark{
  width:22px;height:22px;
  border-radius:8px;
  background:var(--lime);
  box-shadow:inset 0 0 0 3px var(--ink);
  flex:0 0 auto;
}
.logo-text{color:var(--ink);}
.dock-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:.9375rem;
  color:var(--muted);
  border-radius:999px;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--ink);background:rgba(16,17,20,.05);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:3px;border-radius:2px;
  background:var(--lime);
}
.dock-actions{display:flex;align-items:center;gap:8px;margin-left:8px;}
.search-btn{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  background:var(--paper);
  border-radius:999px;
  color:var(--ink);
  cursor:pointer;
  transition:border-color .2s ease,transform .2s ease;
}
.search-btn:hover{border-color:#C9C6BC;transform:translateY(-1px);}
.menu-toggle{
  display:none;
  width:38px;height:38px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  background:var(--paper);
  border-radius:999px;
  color:var(--ink);
  cursor:pointer;
}
.search-panel{
  position:absolute;
  top:76px;left:0;right:0;
  display:none;
  padding:14px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--shadow-md);
  pointer-events:auto;
}
.search-panel.is-open{display:block;}
.search-form{display:flex;gap:10px;}
.search-form input{
  flex:1 1 auto;
  min-width:0;
  height:44px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:var(--bg);
  font-size:.9375rem;
  color:var(--ink);
  outline:none;
}
.search-form input:focus{border-color:var(--lime-dark);box-shadow:0 0 0 3px rgba(198,242,78,.35);}
.mobile-panel{
  position:absolute;
  top:78px;left:16px;right:16px;
  display:none;
  flex-direction:column;
  gap:4px;
  padding:12px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--shadow-md);
  pointer-events:auto;
}
.mobile-panel.is-open{display:flex;}
.mobile-panel .nav-link{display:block;padding:12px 14px;font-size:1rem;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--r-btn);
  font-size:.9375rem;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn:active{transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.btn:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime);}
.btn-primary:hover{background:var(--lime-dark);border-color:var(--lime-dark);color:var(--ink);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-sm{padding:10px 18px;font-size:.875rem;}
.btn-block{width:100%;}
.btn-light{background:var(--paper);color:var(--ink);border-color:var(--line);}
.btn-light:hover{background:var(--lime);border-color:var(--lime);}

/* ---------- 页面骨架 ---------- */
.page-shell{padding-top:118px;padding-bottom:96px;}
.crumb{margin-bottom:28px;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.8125rem;color:var(--muted);}
.crumb li{display:flex;align-items:center;gap:8px;min-width:0;}
.crumb li+li::before{content:"/";color:#C2BFB6;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.crumb li[aria-current="page"]{
  max-width:280px;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
  color:var(--ink);
  font-weight:600;
}

/* ---------- 文章头 ---------- */
.article-hero{
  position:relative;
  overflow:hidden;
  padding:44px;
  border:1px solid var(--line);
  border-radius:28px;
  background-image:linear-gradient(180deg,rgba(246,245,241,.90),rgba(246,245,241,.98)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-sm);
}
.badge-cat{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border:1px solid var(--coral);
  border-radius:999px;
  font-size:.75rem;
  letter-spacing:.06em;
  color:#D2452A;
  background:rgba(255,106,77,.08);
  transition:background-color .2s ease;
}
.badge-cat:hover{background:rgba(255,106,77,.16);color:#D2452A;}
.article-title{
  margin-top:20px;
  font-size:clamp(1.75rem,4vw,2.5rem);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.02em;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 14px;
  margin-top:22px;
  padding-top:22px;
  border-top:1px dashed var(--line);
  font-size:.875rem;
  color:var(--muted);
}
.meta-row .sep{width:4px;height:4px;border-radius:50%;background:#C2BFB6;}
.meta-date{color:var(--ink);font-size:.875rem;}
.share-group{display:flex;align-items:center;gap:8px;margin-left:auto;}
.share-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:38px;
  padding:0 14px;
  border:1px solid var(--line);
  background:var(--paper);
  border-radius:var(--r-btn);
  color:var(--ink);
  font-size:.8125rem;
  cursor:pointer;
  transition:border-color .2s ease,background-color .2s ease,transform .2s ease;
}
.share-btn:hover{border-color:#C9C6BC;background:#FCFCF9;transform:translateY(-1px);}
.share-btn:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}

/* ---------- 文章主体 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:64px;
  align-items:start;
  margin-top:56px;
}
.article-main{max-width:740px;min-width:0;}
.article-body{
  font-size:1rem;
  line-height:1.9;
  color:#22242A;
  word-wrap:break-word;
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body > p:first-of-type{font-size:1.0625rem;color:var(--ink);}
.article-body p{margin:1.15em 0;}
.article-body h2{
  position:relative;
  margin:2em 0 .75em;
  padding-left:16px;
  font-size:clamp(1.3rem,2.4vw,1.7rem);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
  color:var(--ink);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.32em;
  width:4px;height:1.02em;
  border-radius:2px;
  background:var(--lime);
}
.article-body h3{
  margin:1.7em 0 .6em;
  font-size:1.1875rem;
  font-weight:600;
  color:var(--ink);
}
.article-body h4{margin:1.4em 0 .5em;font-size:1.0625rem;font-weight:600;}
.article-body ul,.article-body ol{margin:1em 0;padding-left:1.35em;line-height:1.85;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.4em 0;}
.article-body a{
  color:var(--ink);
  text-decoration:underline;
  text-decoration-color:var(--lime-dark);
  text-decoration-thickness:2px;
  text-underline-offset:3px;
  transition:background-color .2s ease;
}
.article-body a:hover{background:var(--lime);text-decoration-color:var(--ink);}
.article-body img{
  max-width:100%;
  height:auto;
  margin:1.6em auto;
  border-radius:var(--r-img);
  box-shadow:var(--shadow-sm);
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  margin-top:10px;
  text-align:center;
  font-size:.8125rem;
  color:var(--muted);
}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  border-left:3px solid var(--lime);
  background:#FBFBF6;
  border-radius:0 12px 12px 0;
  color:#3A3D45;
}
.article-body blockquote p{margin:.4em 0;}
.article-body code{
  padding:2px 6px;
  background:rgba(16,17,20,.06);
  border-radius:6px;
  font-family:var(--font-mono);
  font-size:.875em;
}
.article-body pre{
  margin:1.4em 0;
  padding:18px;
  overflow-x:auto;
  background:var(--ink-2);
  color:#E8E9EC;
  border-radius:var(--r-img);
  font-size:.875rem;
  line-height:1.7;
}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.2em 0;}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:.9375rem;}
.article-body th,.article-body td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;}
.article-body th{background:#FBFBF6;font-weight:600;}

.article-empty{
  padding:56px 32px;
  text-align:center;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);
}
.empty-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:52px;height:52px;
  border-radius:50%;
  background:var(--lime);
  color:var(--ink);
  font-weight:800;
  font-size:1.25rem;
  font-family:var(--font-mono);
  margin-bottom:18px;
}
.article-empty h2{font-size:1.5rem;font-weight:700;margin-bottom:10px;}
.article-empty p{color:var(--muted);font-size:.9375rem;max-width:420px;margin:0 auto 24px;}

/* ---------- 文末 ---------- */
.article-foot{margin-top:56px;padding-top:36px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:6px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--paper);
  font-size:.75rem;
  letter-spacing:.04em;
  color:var(--muted);
  transition:border-color .2s ease,color .2s ease;
}
.tag:hover{border-color:#C9C6BC;color:var(--ink);}
.next-links{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:28px;}
.next-card{
  display:block;
  padding:22px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.next-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#C9C6BC;}
.next-card .next-label{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.08em;
  color:var(--muted);
  margin-bottom:10px;
}
.next-card h3{font-size:1.0625rem;font-weight:600;line-height:1.5;}
.next-card h3::after{content:" →";color:var(--lime-dark);font-weight:700;}

/* ---------- 侧栏 ---------- */
.article-side{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  padding:22px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);
}
.side-card h3{
  font-size:.75rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:700;
  margin-bottom:14px;
}
.side-links li+li{margin-top:2px;}
.side-links a{
  display:block;
  padding:9px 10px;
  border-radius:10px;
  font-size:.9375rem;
  color:#33363E;
  transition:background-color .2s ease,color .2s ease,padding-left .2s ease;
}
.side-links a:hover{background:rgba(198,242,78,.35);color:var(--ink);padding-left:14px;}
.side-posts li+li{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);}
.side-posts a{display:flex;gap:12px;align-items:center;}
.side-posts img{
  width:72px;height:54px;
  object-fit:cover;
  border-radius:10px;
  flex:0 0 auto;
  transition:transform .25s ease;
}
.side-posts a:hover img{transform:scale(1.04);}
.side-posts span{font-size:.875rem;line-height:1.55;color:#33363E;}
.side-posts a:hover span{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.side-download{background:var(--ink);border-color:var(--ink-2);color:#E8E9EC;}
.side-download h3{color:#9CA0A9;}
.side-download .tag-lime{
  display:inline-block;
  padding:4px 12px;
  border-radius:999px;
  background:rgba(198,242,78,.16);
  color:var(--lime);
  font-family:var(--font-mono);
  font-size:.75rem;
  margin-bottom:12px;
}
.side-download p{font-size:.875rem;color:#B9BCC4;margin:10px 0 18px;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0 0;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.125rem);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.25;
}
.section-head p{color:var(--muted);font-size:.9375rem;margin-top:10px;max-width:560px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.14em;
  color:var(--muted);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:48px;height:3px;background:var(--lime);border-radius:2px;}

/* ---------- 相关推荐卡片 ---------- */
.relate-grid{margin-bottom:-24px;}
.relate-grid > .cell{padding:0 12px;margin-bottom:24px;}
.relate-grid{margin-left:-12px;margin-right:-12px;}
.post-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#C9C6BC;}
.post-thumb{position:relative;overflow:hidden;aspect-ratio:16/10;background:#EAE8E1;}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.post-badge{
  align-self:flex-start;
  padding:4px 12px;
  border:1px solid var(--coral);
  border-radius:999px;
  color:#D2452A;
  font-size:.75rem;
  letter-spacing:.04em;
}
.post-title{font-size:1.0625rem;font-weight:600;line-height:1.5;}
.post-desc{
  font-size:.875rem;
  color:var(--muted);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:auto;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:.8125rem;
  color:var(--muted);
}
.post-arrow{
  width:32px;height:32px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--ink);
  transition:background-color .2s ease,border-color .2s ease,transform .2s ease;
}
.post-card:hover .post-arrow{background:var(--lime);border-color:var(--lime);transform:translateX(2px);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px;}
.faq-item{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:border-color .2s ease;
}
.faq-item:hover{border-color:#C9C6BC;}
.faq-q{
  position:relative;
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 22px;
  background:none;
  border:none;
  text-align:left;
  font-size:1rem;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  line-height:1.6;
}
.faq-q .faq-bar{
  width:3px;
  height:1.1em;
  border-radius:2px;
  background:transparent;
  flex:0 0 auto;
  transition:background-color .25s ease;
}
.faq-item.is-open .faq-q .faq-bar{background:var(--lime);}
.faq-icon{
  margin-left:auto;
  flex:0 0 auto;
  width:20px;height:20px;
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform .28s ease;
  color:var(--muted);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 22px 22px 41px;
  font-size:.9375rem;
  color:var(--muted);
  line-height:1.85;
}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:88px;
  border-radius:28px;
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:36px 36px,36px 36px;
  padding:52px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  color:#fff;
}
.cta-band h2{
  font-size:clamp(1.5rem,2.8vw,2.125rem);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.3;
  color:#fff;
}
.cta-band p{color:#B9BCC4;font-size:.9375rem;margin-top:10px;max-width:460px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.35);}
.cta-actions .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  padding:72px 0 28px;
  background:var(--ink);
  color:#B9BCC4;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand .dock-logo{margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:.875rem;line-height:1.75;color:#B9BCC4;max-width:300px;}
.socials{display:flex;gap:10px;margin-top:20px;}
.social-btn{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line-dark);
  color:#B9BCC4;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.social-btn:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);}
.footer-col h4{font-size:.875rem;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:.875rem;line-height:1.7;}
.footer-col a{color:#B9BCC4;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  align-items:center;
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid var(--line-dark);
  font-size:.8125rem;
  color:#8B8F98;
}
.footer-bottom .mono{font-size:.75rem;letter-spacing:.02em;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease;}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-side{display:none;}
  .article-main{max-width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:991px){
  .dock-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .search-btn{display:none;}
  .dock-actions{margin-left:auto;}
  .dock-bar{gap:12px;padding:0 10px 0 18px;}
  .article-hero{padding:34px;}
  .page-shell{padding-top:104px;padding-bottom:72px;}
  .section{padding:64px 0 0;}
  .cta-band{margin-top:64px;padding:36px;}
  .next-links{grid-template-columns:1fr;}
}
@media (max-width:767px){
  .dock-header{padding:12px 14px;}
  .dock-bar{height:58px;padding:0 8px 0 14px;}
  .dock-logo{font-size:.9375rem;gap:8px;}
  .logo-mark{width:19px;height:19px;border-radius:7px;}
  .dock-actions .btn-sm{padding:9px 14px;font-size:.8125rem;}
  .page-shell{padding-top:96px;padding-bottom:56px;}
  .article-hero{padding:24px;border-radius:22px;}
  .article-title{-webkit-line-clamp:4;}
  .meta-row{gap:8px 10px;font-size:.8125rem;}
  .share-group{margin-left:0;width:100%;}
  .next-links{gap:12px;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:28px 22px;border-radius:22px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .relate-grid{margin-left:-8px;margin-right:-8px;}
  .relate-grid > .cell{padding:0 8px;}
  .faq-q{padding:16px 18px;font-size:.9375rem;}
  .faq-a p{padding:0 18px 18px 37px;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .article-hero{padding:20px;}
  .share-btn span{display:none;}
  .share-btn{width:38px;padding:0;justify-content:center;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .btn:hover,.post-card:hover,.next-card:hover{transform:none;}
  .dock-bar{transition:none;}
}

/* roulang page: category2 */
:root{
  --ink:#101114;
  --graphite:#1B1D22;
  --warm:#F6F5F1;
  --paper:#FFFFFF;
  --lime:#C6F24E;
  --lime-dark:#AEDC36;
  --coral:#FF6A4D;
  --muted:#6B6E76;
  --line:#E3E1DA;
  --line-strong:#C9C6BC;
  --r-card:20px;
  --r-btn:12px;
  --shadow-1:0 1px 2px rgba(16,17,20,.04);
  --shadow-2:0 12px 32px -8px rgba(16,17,20,.12);
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-top:96px;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--warm);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em;}
p{margin:0;}
ul,ol,dl{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px;}}
@media(min-width:1200px){.container{padding-left:40px;padding-right:40px;}}

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

/* ---------- Dock 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  padding:16px 20px 0;
}
.dock{
  max-width:1200px;margin:0 auto;
  height:64px;display:flex;align-items:center;gap:16px;
  padding:0 12px 0 18px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(246,245,241,.84);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);
  transition:height .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled .dock{height:56px;box-shadow:var(--shadow-2);}
.dock-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:26px;height:26px;border-radius:8px;background:var(--ink);position:relative;flex:0 0 auto;
}
.logo-mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;background:var(--lime);
}
.logo-text{font-size:1.0625rem;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.dock-nav{display:flex;align-items:center;gap:4px;margin:0 auto;}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 15px;
  border-radius:999px;font-size:.9375rem;font-weight:500;color:#3A3D45;
  transition:background-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.nav-link:hover{background:rgba(16,17,20,.07);color:var(--ink);}
.nav-link:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.nav-link.is-active{background:var(--ink);color:#fff;}
.dock-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:999px;background:var(--paper);color:var(--ink);
  transition:background-color .2s ease,border-color .2s ease,transform .2s ease;
}
.icon-btn:hover{background:#fff;border-color:var(--line-strong);transform:translateY(-1px);}
.icon-btn:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.menu-toggle{display:none;}

/* 移动端面板 */
.dock-mobile{
  display:none;
  max-width:1200px;margin:10px auto 0;
  background:rgba(255,255,255,.97);
  border:1px solid var(--line);
  border-radius:22px;
  padding:14px;
  box-shadow:var(--shadow-2);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.dock-mobile.is-open{display:block;}
.dock-mobile .nav-link{display:flex;height:46px;border-radius:14px;padding:0 16px;font-size:1rem;}
.dock-mobile .nav-link + .nav-link{margin-top:4px;}
.dock-mobile .btn{width:100%;margin-top:10px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:.9375rem;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.btn-lime{background:var(--lime);color:var(--ink);border-color:var(--lime);}
.btn-lime:hover{background:var(--lime-dark);color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-lime:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-ghost:active{transform:translateY(0);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 16px;font-size:.875rem;}

/* ---------- 说明条与徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;border:1px solid var(--coral);
  background:rgba(255,106,77,.08);color:#C93F26;
  font-size:.75rem;font-weight:600;letter-spacing:.04em;
}
.badge-soft{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;border:1px solid var(--line);background:var(--warm);
  color:#54575E;font-size:.75rem;font-weight:600;letter-spacing:.04em;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:.75rem;font-weight:700;letter-spacing:.14em;color:var(--muted);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:48px;height:2px;background:var(--lime);display:block;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:44px 0 64px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center right;
  opacity:.20;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,245,241,.97) 0%,rgba(246,245,241,.88) 52%,rgba(246,245,241,.55) 100%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{margin-bottom:26px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.8125rem;color:var(--muted);}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li + li::before{content:"/";color:#B3B1A8;}
.breadcrumb a{color:var(--muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.hero-grid{row-gap:36px;}
.page-hero h1{
  font-size:clamp(2.1rem,4.4vw,3.5rem);
  line-height:1.14;font-weight:800;letter-spacing:-.02em;
  margin:18px 0 18px;max-width:15em;
}
.hero-lede{
  font-size:1.0625rem;line-height:1.85;color:#43464D;max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-panel{
  background:var(--graphite);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-card);
  padding:26px 26px 22px;
  color:#D5D7DC;
  box-shadow:var(--shadow-2);
}
.hero-num{
  display:block;font-size:3.5rem;line-height:1;font-weight:700;color:var(--lime);letter-spacing:-.04em;
}
.hero-panel-text{
  margin-top:12px;font-size:.9375rem;line-height:1.7;color:#B9BCC4;
}
.hero-mini{margin-top:18px;border-top:1px dashed rgba(255,255,255,.16);padding-top:6px;}
.hero-mini li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.10);
  font-size:.875rem;
}
.hero-mini li:last-child{border-bottom:0;}
.hero-mini .mono{color:var(--lime);font-size:.8125rem;}

/* ---------- 板块 ---------- */
.section{padding:72px 0;}
@media(min-width:768px){.section{padding:88px 0;}}
@media(min-width:1200px){.section{padding:104px 0;}}
.section-tight{padding:56px 0;}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:18px;margin-bottom:38px;
}
.section-head h2{
  font-size:clamp(1.6rem,2.9vw,2.35rem);line-height:1.25;max-width:18em;margin-top:12px;
}
.sec-num{
  display:inline-flex;align-items:center;gap:12px;
  font-family:var(--mono);font-size:.8125rem;letter-spacing:.16em;color:var(--muted);
}
.sec-num::after{content:"";width:48px;height:2px;background:var(--lime);display:block;}
.sec-sub{color:var(--muted);font-size:.9375rem;max-width:32em;line-height:1.8;}

/* ---------- 要点条 ---------- */
.highlights{
  display:grid;grid-template-columns:1fr;gap:16px;
}
@media(min-width:768px){.highlights{grid-template-columns:repeat(3,1fr);gap:20px;}}
.hl-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.hl-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.hl-icon{
  width:44px;height:44px;flex:0 0 auto;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(198,242,78,.28);color:#3C4A16;
}
.hl-item h3{font-size:1.0625rem;margin-bottom:6px;font-weight:700;}
.hl-item p{font-size:.875rem;color:var(--muted);line-height:1.75;}

/* ---------- 图文网格 ---------- */
.tiles{row-gap:20px;}
@media(min-width:992px){
  .tiles > .cell:nth-child(even){margin-top:34px;}
}
.tile{
  display:flex;flex-direction:column;height:100%;min-height:340px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.tile:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.tile:focus-within{border-color:var(--line-strong);}
.tile-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#EDEBE4;}
.tile-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.tile:hover .tile-media img{transform:scale(1.04);}
.tile-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.tile-body h3{font-size:1.125rem;line-height:1.45;}
.tile-body p{
  color:var(--muted);font-size:.9375rem;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.tile-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:.875rem;font-weight:600;color:var(--ink);
}
.tile-link::after{content:"→";transition:transform .24s ease;}
.tile:hover .tile-link::after{transform:translateX(4px);}
.tile-link:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px;}

/* ---------- 流程 ---------- */
.section-alt{background:#EFEEE8;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.steps{display:grid;grid-template-columns:1fr;gap:18px;}
@media(min-width:768px){.steps{grid-template-columns:repeat(3,1fr);gap:24px;}}
.step{
  position:relative;padding:26px 24px 24px;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);
}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:44px;height:32px;padding:0 10px;border-radius:999px;
  background:var(--ink);color:var(--lime);
  font-family:var(--mono);font-size:.8125rem;letter-spacing:.1em;
}
.step h3{font-size:1.0625rem;margin:16px 0 8px;}
.step p{font-size:.9375rem;color:var(--muted);line-height:1.78;}

/* ---------- 相关内容 ---------- */
.relate-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.relate-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.relate-media{aspect-ratio:4/3;overflow:hidden;background:#EDEBE4;}
.relate-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.relate-card:hover .relate-media img{transform:scale(1.04);}
.relate-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.relate-body h3{font-size:1.0625rem;line-height:1.45;}
.relate-body p{
  font-size:.875rem;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.relate-date{font-family:var(--mono);font-size:.75rem;color:#8B8E96;letter-spacing:.06em;margin-top:auto;padding-top:6px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion{background:transparent;border:0;margin:0;max-width:none;}
.accordion-item{
  background:var(--paper);border:1px solid var(--line);border-radius:16px;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-1);
  transition:border-color .24s ease,box-shadow .24s ease;
}
.accordion-item:hover{border-color:var(--line-strong);}
.accordion-item.is-active{border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.accordion-title{
  position:relative;display:block;
  background:transparent;border:0;
  padding:20px 56px 20px 24px;
  font-size:1.0625rem;font-weight:600;color:var(--ink);line-height:1.5;
  transition:background-color .2s ease,color .2s ease;
}
.accordion-title:hover,.accordion-title:focus{background:#FBFBF7;color:var(--ink);}
.accordion-title:focus-visible{outline:2px solid var(--lime);outline-offset:-4px;}
.accordion-title::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  border-radius:0 3px 3px 0;background:transparent;transition:background-color .24s ease;
}
.accordion-item.is-active .accordion-title::before{background:var(--lime);}
.accordion-title::after{
  content:"";position:absolute;right:26px;top:50%;
  width:8px;height:8px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:translateY(-70%) rotate(45deg);transition:transform .28s ease;
}
.accordion-item.is-active .accordion-title::after{transform:translateY(-25%) rotate(-135deg);}
.accordion-content{
  background:transparent;border:0;padding:0 24px 22px;color:#54575E;
  font-size:.9375rem;line-height:1.85;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink);color:#E7E8EA;
  padding:64px 0;margin-top:8px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-inner h2{font-size:clamp(1.5rem,2.7vw,2.15rem);color:#fff;max-width:20em;}
.cta-inner p{margin-top:10px;color:#A9ACB4;font-size:.9375rem;max-width:34em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#B9BCC4;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:32px;}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;}}
.site-footer .dock-logo{margin-bottom:16px;}
.site-footer .logo-text{color:#fff;}
.site-footer .logo-mark{background:#2A2D33;}
.footer-brand p{font-size:.875rem;line-height:1.8;max-width:22em;}
.socials{display:flex;gap:10px;margin-top:18px;}
.social-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;border:1px solid rgba(255,255,255,.14);color:#C8CAD0;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.social-btn:hover{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.34);transform:translateY(-2px);}
.social-btn:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.footer-col h4{font-size:.8125rem;letter-spacing:.12em;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-col ul li{font-size:.875rem;line-height:1.9;margin-bottom:8px;}
.footer-col ul li a{transition:color .2s ease;}
.footer-col ul li a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  margin-top:56px;padding:22px 0 30px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:.8125rem;color:#8F9299;
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media(max-width:991px){
  .dock-nav{display:none;}
  .menu-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
    background:var(--paper);color:var(--ink);cursor:pointer;
    transition:background-color .2s ease,border-color .2s ease;
  }
  .menu-toggle:hover{background:#fff;border-color:var(--line-strong);}
  .menu-toggle:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
  .dock-actions .icon-btn{display:none;}
}
@media(max-width:767px){
  body{padding-top:88px;}
  .site-header{padding:12px 14px 0;}
  .dock{height:58px;gap:10px;padding:0 10px 0 14px;}
  .logo-text{font-size:.9375rem;}
  .dock-actions .btn{display:none;}
  .page-hero{padding:30px 0 46px;}
  .page-hero h1{font-size:clamp(1.7rem,7.2vw,2.4rem);margin:14px 0 14px;}
  .hero-lede{font-size:1rem;}
  .hero-actions .btn{width:100%;}
  .hero-num{font-size:2.75rem;}
  .section-head{margin-bottom:28px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media(max-width:519px){
  .container{padding-left:18px;padding-right:18px;}
  .tile{min-height:0;}
  .hl-item{padding:18px;}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}