/* roulang page: index */
:root{
  --paper:#F7F7F4;
  --surface:#FFFFFF;
  --ink:#16262C;
  --muted:#5D7076;
  --line:#E2E7E6;
  --brand-50:#EEF5F6;
  --brand-100:#D9E8EA;
  --brand-500:#3C7F95;
  --brand-600:#2A647C;
  --brand-700:#1F5066;
  --brand-900:#12303E;
  --sand-100:#F3E9E1;
  --sand-500:#B5764F;
  --sand-700:#8C5738;
  --danger:#B4433A;
  --ok:#2F7D5B;
  --radius-pill:999px;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 1px 2px rgba(18,48,62,.04), 0 18px 40px -24px rgba(18,48,62,.22);
  --shadow-2:0 2px 4px rgba(18,48,62,.06), 0 24px 56px -24px rgba(18,48,62,.28);
  --serif:"Noto Serif SC","Songti SC",SimSun,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

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

/* ---------- header / nav ---------- */
.site-header{position:fixed;top:18px;left:0;right:0;z-index:60;padding:0 20px}
.nav-shell{
  max-width:1200px;margin:0 auto;height:64px;
  display:flex;align-items:center;gap:14px;
  padding:0 8px 0 18px;
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--radius-pill);
  box-shadow:var(--shadow-1);
  transition:background .15s ease, box-shadow .15s ease;
}
.site-header.scrolled .nav-shell{background:rgba(255,255,255,.94);box-shadow:0 2px 6px rgba(18,48,62,.07), 0 22px 48px -24px rgba(18,48,62,.3)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;min-height:44px}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand-900);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.brand-mark svg{width:20px;height:20px;display:block}
.brand-text{font-family:var(--serif);font-size:19px;font-weight:600;line-height:1.1;letter-spacing:.02em}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.08em;line-height:1.3;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  display:inline-flex;align-items:center;font-size:14px;color:var(--muted);
  padding:9px 14px;border-radius:var(--radius-pill);
  transition:color .2s ease, background .2s ease;white-space:nowrap;
}
.nav-link:hover{color:var(--brand-700);background:var(--brand-50)}
.nav-link.active{background:var(--brand-50);color:var(--brand-700);font-weight:600}
.nav-link.active::before{content:"";width:5px;height:5px;border-radius:999px;background:var(--brand-600);margin-right:7px}
.nav-cta{margin-left:6px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-pill);
  align-items:center;justify-content:center;border:1px solid var(--line);
  background:#fff;margin-left:auto;flex-shrink:0;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);transition:transform .2s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-panel{
  display:none;position:absolute;top:calc(100% + 10px);left:20px;right:20px;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow-2);padding:12px;
}
.nav-panel a{display:flex;align-items:center;min-height:48px;padding:0 16px;border-radius:12px;font-size:15px;color:var(--ink)}
.nav-panel a:hover{background:var(--brand-50);color:var(--brand-700)}
.nav-panel a.active{background:var(--brand-50);color:var(--brand-700);font-weight:600}
.nav-panel .btn{width:100%;margin-top:8px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:500;letter-spacing:.01em;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand-700);color:#fff}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);box-shadow:0 10px 24px -14px rgba(18,48,62,.7)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-50)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none!important;box-shadow:none!important}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand-700);
  border-bottom:1px solid transparent;padding-bottom:2px;transition:border-color .2s ease,color .2s ease;
}
.link-more:hover{border-color:var(--brand-700)}
.link-more .go{transition:transform .2s ease}
.link-more:hover .go{transform:translateX(3px)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:132px 0 64px}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(60,127,149,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(60,127,149,.055) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(125% 95% at 82% 0%,#000 0%,transparent 72%);
  mask-image:radial-gradient(125% 95% at 82% 0%,#000 0%,transparent 72%);
}
.hero::after{
  content:"";position:absolute;top:-170px;right:-90px;width:540px;height:540px;border-radius:50%;
  background:radial-gradient(circle,rgba(217,232,234,.9),rgba(247,247,244,0) 70%);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy{max-width:560px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;
  color:var(--brand-700);background:var(--brand-50);border:1px solid var(--brand-100);
  padding:6px 14px;border-radius:var(--radius-pill);font-weight:600;
}
.dot-red{width:6px;height:6px;border-radius:999px;background:var(--danger);display:inline-block}
.hero h1{
  font-family:var(--serif);font-weight:600;line-height:1.22;letter-spacing:-.01em;
  font-size:clamp(30px,4.2vw,52px);margin-top:18px;
}
.hero-sub{font-size:17px;color:var(--muted);margin-top:18px;max-width:520px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.search-form{
  display:flex;align-items:center;gap:8px;height:52px;max-width:480px;margin-top:26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:5px 5px 5px 18px;box-shadow:var(--shadow-1);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-form:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px var(--brand-100)}
.search-form svg{width:18px;height:18px;color:var(--muted);flex-shrink:0}
.search-form input{flex:1;min-width:0;border:none;outline:none;background:transparent;font-size:15px}
.search-form .btn{height:42px;padding:0 20px;font-size:14px}
.hero-meta{display:flex;flex-wrap:wrap;margin-top:30px;padding-top:18px;border-top:1px solid var(--line)}
.hero-meta div{
  display:flex;align-items:baseline;gap:8px;font-size:13px;color:var(--muted);
  padding-right:20px;margin-right:20px;border-right:1px solid var(--line);
}
.hero-meta div:last-child{border-right:none;margin-right:0;padding-right:0}
.hero-meta strong{font-family:var(--serif);font-size:14px;color:var(--ink);font-weight:600}

/* ---------- cover card ---------- */
.cover-card{
  position:relative;display:block;overflow:hidden;border-radius:var(--radius-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-1);background:#12303E;isolation:isolate;
  transition:transform .2s ease,box-shadow .2s ease;
}
.cover-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform .45s ease}
.cover-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.cover-card:hover img{transform:scale(1.03)}
.cover-badge{
  position:absolute;top:16px;left:16px;z-index:2;
  background:rgba(255,255,255,.94);color:var(--brand-700);
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:var(--radius-pill);
}
.cover-overlay{
  position:absolute;left:0;right:0;bottom:0;z-index:2;padding:22px;color:#fff;
  background:linear-gradient(to top,rgba(9,26,33,.9),rgba(9,26,33,.55) 48%,rgba(9,26,33,0));
}
.cover-title{font-family:var(--serif);font-size:21px;line-height:1.38;color:#fff;font-weight:600}
.cover-meta{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.8)}
.arrow-circle{
  width:38px;height:38px;flex-shrink:0;border-radius:999px;border:1px solid rgba(255,255,255,.45);
  display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.cover-card:hover .arrow-circle{background:#fff;color:var(--brand-900);border-color:#fff;transform:translateX(2px)}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:32px}
.section-kicker{display:block;font-size:12px;letter-spacing:.12em;color:var(--sand-700);font-weight:600;margin-bottom:10px}
.section-title{font-family:var(--serif);font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:600}
.section-desc{font-size:15px;color:var(--muted);margin-top:10px;max-width:620px;line-height:1.85}

/* ---------- collection directory ---------- */
.coll-top{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.coll-side{display:grid;gap:24px;align-content:stretch}
.mini-card{
  display:flex;gap:16px;align-items:center;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-md);padding:16px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-100)}
.mini-card img{width:104px;height:82px;flex-shrink:0;object-fit:cover;border-radius:var(--radius-sm)}
.mini-card h3{font-size:16px;font-weight:600;line-height:1.45}
.mini-card p{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.7}
.mini-card .num{font-family:var(--serif);font-size:13px;color:var(--sand-500);display:block;margin-bottom:4px;letter-spacing:.06em}
.index-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:24px}
.index-card{
  position:relative;display:flex;flex-direction:column;min-height:200px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:22px 20px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.index-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-100)}
.index-num{font-family:var(--serif);font-size:26px;line-height:1;color:var(--sand-500)}
.index-card h3{font-size:17px;font-weight:600;line-height:1.45;margin-top:14px}
.index-card p{font-size:13.5px;color:var(--muted);line-height:1.7;margin-top:8px}
.index-foot{margin-top:auto;padding-top:16px;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted)}
.index-foot .go{transition:transform .2s ease,color .2s ease}
.index-card:hover .index-foot .go{transform:translateX(3px);color:var(--brand-700)}

/* ---------- dark status band ---------- */
.status-band{
  background:var(--brand-900);border-radius:20px;padding:26px 30px;color:#fff;
  display:flex;flex-wrap:wrap;align-items:center;gap:20px 34px;
}
.status-lead{display:flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.1em;color:var(--brand-100);font-weight:600}
.status-items{display:flex;flex-wrap:wrap;gap:12px 34px;flex:1}
.status-items div{font-size:13.5px;color:rgba(255,255,255,.72)}
.status-items strong{color:#fff;font-weight:600;margin-left:6px}
.status-band .link-more{color:var(--brand-100);font-size:13.5px}
.status-band .link-more:hover{border-color:var(--brand-100)}

/* ---------- featured entries ---------- */
.featured-grid{display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:start}
.entry-list{display:flex;flex-direction:column}
.entry{
  display:grid;grid-template-columns:180px 1fr;gap:20px;padding:20px 16px;
  border-top:1px solid var(--line);border-radius:var(--radius-sm);
  transition:background .2s ease;
}
.entry:last-child{border-bottom:1px solid var(--line)}
.entry:hover{background:rgba(238,245,246,.7)}
.entry img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-sm);border:1px solid var(--line)}
.entry h3{font-size:18px;font-weight:600;line-height:1.5;transition:color .2s ease}
.entry:hover h3{color:var(--brand-700)}
.entry p{
  font-size:14px;color:var(--muted);line-height:1.75;margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:12px;font-size:12.5px;color:var(--muted)}
.tag{display:inline-flex;align-items:center;font-size:12px;padding:3px 10px;border-radius:var(--radius-pill);background:var(--brand-50);color:var(--brand-700);border:1px solid var(--brand-100)}
.tag-sand{background:var(--sand-100);color:var(--sand-700);border-color:#EAD9CB}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:20px}
.side-card + .side-card{margin-top:20px}
.side-card h3{font-size:15px;font-weight:600;margin-bottom:14px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{font-size:12.5px;padding:5px 12px;border-radius:var(--radius-pill);border:1px solid var(--line);color:var(--muted);transition:.2s;min-height:32px;display:inline-flex;align-items:center}
.tag-cloud a:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-50)}
.save-card{background:var(--sand-100);border:1px solid #EAD9CB;border-radius:var(--radius-md);padding:20px}
.save-card h3{font-size:15px;font-weight:600;color:var(--sand-700)}
.save-card p{font-size:13px;color:#7B5B44;line-height:1.75;margin-top:8px}
.save-card .btn{margin-top:14px;width:100%}

/* ---------- latest news ---------- */
.latest-grid{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start}
.latest-aside{position:sticky;top:96px}
.latest-desc{font-size:14.5px;color:var(--muted);line-height:1.85;margin-top:12px;max-width:320px}
.latest-aside .link-more{margin-top:16px}
.news-list{display:grid;gap:16px}
.news-item{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:20px 22px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-100)}
.news-cat{display:inline-flex;font-size:12px;padding:3px 10px;border-radius:var(--radius-pill);background:var(--brand-50);color:var(--brand-700);border:1px solid var(--brand-100);margin-bottom:10px}
.news-item h3{font-size:17px;font-weight:600;line-height:1.55;transition:color .2s ease}
.news-item:hover h3{color:var(--brand-700)}
.news-item p{
  font-size:14px;color:var(--muted);line-height:1.75;margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;justify-content:space-between;align-items:center;margin-top:14px;font-size:12.5px;color:var(--muted)}
.news-meta .go{transition:transform .2s ease;color:var(--brand-600)}
.news-item:hover .news-meta .go{transform:translateX(3px)}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-md);
  padding:48px 24px;text-align:center;color:var(--muted);background:var(--surface);
}
.empty-state svg{width:24px;height:24px;margin:0 auto 14px;color:var(--brand-500)}
.empty-state p{font-size:14px}
.empty-state .link-more{margin-top:12px}

/* ---------- recommendations scroller ---------- */
.scroller{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 2px 14px;scrollbar-width:none;-ms-overflow-style:none;
}
.scroller::-webkit-scrollbar{display:none}
.rel-card{
  flex:0 0 320px;scroll-snap-align:start;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-100)}
.rel-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.rel-body{padding:16px 18px 18px}
.rel-body h3{font-size:16px;font-weight:600;line-height:1.5;margin-top:10px;transition:color .2s ease}
.rel-card:hover .rel-body h3{color:var(--brand-700)}
.rel-date{font-size:12.5px;color:var(--muted);margin-top:12px}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--brand-50);
  border:1px solid var(--brand-100);border-radius:var(--radius-lg);
  padding:40px;display:flex;justify-content:space-between;align-items:center;gap:32px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(60,127,149,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(60,127,149,.07) 1px,transparent 1px);
  background-size:32px 32px;
  -webkit-mask-image:radial-gradient(90% 120% at 100% 0%,#000,transparent 70%);
  mask-image:radial-gradient(90% 120% at 100% 0%,#000,transparent 70%);
}
.cta-copy{position:relative;z-index:1;max-width:520px}
.cta-copy h2{font-family:var(--serif);font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:600}
.cta-copy p{font-size:14.5px;color:var(--brand-700);margin-top:10px;line-height:1.75}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn-ghost{background:#fff}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:920px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;
  min-height:56px;padding:18px 4px;font-size:16px;font-weight:500;text-align:left;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-700)}
.faq-icon{position:relative;width:20px;height:20px;flex-shrink:0;transition:transform .25s ease,color .25s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-icon::before{left:0;top:9px;width:20px;height:1.5px}
.faq-icon::after{left:9px;top:0;width:1.5px;height:20px}
.faq-q[aria-expanded="true"]{color:var(--brand-700)}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-a p{font-size:15px;color:var(--muted);line-height:1.85;max-width:760px;padding:0 4px 20px}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:#fff;margin-top:80px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand-text{color:#fff;font-size:21px}
.footer-brand .brand-sub{color:rgba(255,255,255,.6)}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.footer-desc{font-size:13.5px;color:rgba(255,255,255,.66);line-height:1.85;margin-top:16px;max-width:290px}
.footer-contact{font-size:13px;color:rgba(255,255,255,.72);margin-top:14px;line-height:1.9}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.55);font-weight:600;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.72);line-height:1.6;padding:6px 0;transition:color .2s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:20px 0 28px;font-size:12px;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.45);transition:color .2s ease}
.footer-bottom a:hover{color:rgba(255,255,255,.85)}

/* ---------- toast ---------- */
.toast{
  position:fixed;left:50%;bottom:32px;z-index:120;
  transform:translate(-50%,16px);opacity:0;pointer-events:none;
  background:var(--brand-900);color:#fff;font-size:14px;
  padding:12px 22px;border-radius:var(--radius-pill);
  box-shadow:0 18px 40px -18px rgba(18,48,62,.6);
  transition:opacity .25s ease,transform .25s ease;
}
.toast.show{opacity:1;transform:translate(-50%,0)}

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

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .featured-grid{grid-template-columns:7fr 5fr;gap:24px}
}
@media (max-width:1023px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .nav-panel{display:block;opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity .2s ease,transform .2s ease,visibility .2s}
  .nav-panel.open{opacity:1;visibility:visible;transform:none}
  .hero{padding:120px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-copy{max-width:none}
  .cover-card img{aspect-ratio:16/9}
  .section{padding:72px 0}
  .coll-top{grid-template-columns:1fr}
  .coll-side{grid-template-columns:1fr 1fr}
  .index-grid{grid-template-columns:repeat(2,1fr)}
  .featured-grid{grid-template-columns:1fr}
  .latest-grid{grid-template-columns:1fr;gap:24px}
  .latest-aside{position:static}
  .latest-desc{max-width:none}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .site-header{top:12px;padding:0 14px}
  .nav-panel{left:0;right:0}
  .brand-sub{display:none}
  .hero{padding:108px 0 40px}
  .hero-sub{font-size:16px}
  .hero-meta div{font-size:12.5px;padding-right:14px;margin-right:14px}
  .section{padding:52px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px}
  .coll-side{grid-template-columns:1fr}
  .index-grid{grid-template-columns:1fr;gap:16px}
  .index-card{min-height:0}
  .entry{grid-template-columns:96px 1fr;gap:14px;padding:16px 12px}
  .entry img{aspect-ratio:4/3}
  .entry h3{font-size:16px}
  .entry p{font-size:13px}
  .rel-card{flex:0 0 78vw}
  .status-band{padding:22px;gap:14px}
  .status-items{flex-direction:column;gap:8px}
  .cta-band{padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;gap:8px}
  .entry-list .entry:first-child{border-top:1px solid var(--line)}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%}
  .search-form{height:48px;padding-left:14px}
  .search-form .btn{padding:0 14px;font-size:13px}
  .cover-title{font-size:18px}
  .cover-overlay{padding:16px}
  .mini-card img{width:84px;height:66px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --paper:#F7F7F4;
  --surface:#FFFFFF;
  --ink:#16262C;
  --muted:#5D7076;
  --line:#E2E7E6;
  --brand-50:#EEF5F6;
  --brand-100:#D9E8EA;
  --brand-500:#3C7F95;
  --brand-600:#2A647C;
  --brand-700:#1F5066;
  --brand-900:#12303E;
  --sand-100:#F3E9E1;
  --sand-500:#B5764F;
  --sand-700:#8C5738;
  --danger:#B4433A;
  --ok:#2F7D5B;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --shadow-sm:0 1px 2px rgba(18,48,62,.04),0 18px 40px -24px rgba(18,48,62,.22);
  --shadow-md:0 2px 4px rgba(18,48,62,.06),0 24px 56px -24px rgba(18,48,62,.28);
  --serif:"Noto Serif SC","Songti SC",SimSun,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  background-image:
    radial-gradient(320px 320px at 88% -40px, rgba(217,232,234,.55), transparent 70%),
    linear-gradient(rgba(226,231,230,.42) 1px, transparent 1px),
    linear-gradient(90deg, rgba(226,231,230,.42) 1px, transparent 1px);
  background-size:auto, 64px 64px, 64px 64px;
  background-repeat:no-repeat, repeat, repeat;
}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease,text-decoration-color .2s ease}
a:hover{text-decoration:underline;text-underline-offset:4px}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;letter-spacing:.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
main{display:block;padding-top:112px}

/* ---------- header ---------- */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:80;padding:0 24px}
.nav-shell{
  max-width:1200px;margin:0 auto;height:64px;display:flex;align-items:center;gap:14px;
  padding:0 10px 0 18px;border-radius:999px;
  background:rgba(255,255,255,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:background .15s ease,box-shadow .15s ease;
}
.site-header.is-scrolled .nav-shell{background:rgba(255,255,255,.94);box-shadow:var(--shadow-md)}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;flex-shrink:0}
.brand:hover{text-decoration:none}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:var(--brand-700);flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:block;font-family:var(--serif);font-size:17px;font-weight:600;line-height:1.2;letter-spacing:.02em}
.brand-sub{display:block;font-size:11px;color:var(--muted);line-height:1.4;letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;
  font-size:14px;color:var(--ink);text-decoration:none;transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--brand-50);color:var(--brand-700);text-decoration:none}
.nav-link.active{background:var(--brand-50);color:var(--brand-700);font-weight:600}
.nav-link.active::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--sand-500);margin-right:6px}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);position:relative;margin-left:auto;flex-shrink:0;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:1.6px;background:var(--brand-700);transform:translateX(-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-.8px}
.nav-toggle span::before{content:"";top:-6px}
.nav-toggle span::after{content:"";top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) rotate(45deg);top:0}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) rotate(-45deg);top:0}
.nav-panel{
  display:none;max-width:1200px;margin:10px auto 0;padding:12px;
  background:rgba(255,255,255,.97);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-md);
}
.nav-panel a{display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:12px;font-size:15px;color:var(--ink);text-decoration:none}
.nav-panel a:hover,.nav-panel a.active{background:var(--brand-50);color:var(--brand-700);text-decoration:none}
.nav-panel .btn{justify-content:center;margin-top:8px;min-height:48px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  border-radius:999px;font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;
  border:1px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--brand-600);color:#fff}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-50)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled]{opacity:.45;pointer-events:none}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:16px 0 4px;font-size:13px;color:var(--muted)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb [aria-current]{color:var(--ink)}

/* ---------- page head ---------- */
.page-hero{padding:20px 0 0}
.page-hero .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--sand-700);
  background:var(--sand-100);border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.page-hero h1{font-size:clamp(30px,4.2vw,52px);line-height:1.22;max-width:16em}
.page-hero .lead{margin-top:16px;max-width:720px;color:var(--muted);font-size:16px}
.page-hero .head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.meta-strip{display:flex;flex-wrap:wrap;gap:0;margin-top:28px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.meta-strip div{padding:14px 28px 14px 0;margin-right:28px;border-right:1px solid var(--line);font-size:13px;color:var(--muted)}
.meta-strip div:last-child{border-right:0;margin-right:0}
.meta-strip strong{display:block;font-family:var(--serif);font-size:20px;color:var(--ink);font-weight:600}

/* ---------- section ---------- */
.section{padding:72px 0 0}
.section:last-of-type{padding-bottom:72px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.eyebrow{display:block;font-size:12px;letter-spacing:.14em;color:var(--brand-600);margin-bottom:10px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3}
.section-head p{color:var(--muted);font-size:14px;max-width:620px;margin-top:8px}
.text-link{font-size:14px;font-weight:600;color:var(--brand-700);display:inline-flex;align-items:center;gap:6px}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- cover wall ---------- */
.cover-wall{display:grid;grid-template-columns:1.55fr 1fr;gap:16px}
.cover-main,.cover-sm{position:relative;display:block;overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--shadow-sm);text-decoration:none;background:var(--brand-900)}
.cover-main{aspect-ratio:21/9}
.cover-side{display:grid;grid-template-rows:1fr 1fr;gap:16px;min-height:0}
.cover-sm{min-height:150px}
.cover-main img,.cover-sm img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.cover-main:hover img,.cover-sm:hover img{transform:scale(1.03)}
.cover-main:hover,.cover-sm:hover{box-shadow:var(--shadow-md)}
.cover-fig{position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,48,62,.05) 0%,rgba(18,48,62,.55) 62%,rgba(18,48,62,.86) 100%)}
.cover-cap{position:absolute;left:22px;right:22px;bottom:20px;color:#fff}
.cover-cap .tag{
  display:inline-block;font-size:12px;letter-spacing:.1em;color:#fff;background:rgba(181,118,79,.9);
  border-radius:999px;padding:3px 12px;margin-bottom:10px;
}
.cover-cap h3{font-size:20px;line-height:1.35;color:#fff}
.cover-sm .cover-cap{left:18px;right:18px;bottom:16px}
.cover-sm .cover-cap h3{font-size:16px}
.cover-cap .sub{display:block;margin-top:6px;font-size:12px;color:rgba(255,255,255,.82)}

/* ---------- index list ---------- */
.index-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 32px;border-top:1px solid var(--line)}
.index-row{
  display:grid;grid-template-columns:56px 1fr 92px 26px;align-items:center;gap:12px;
  padding:20px 8px;border-bottom:1px solid var(--line);text-decoration:none;color:inherit;
  border-radius:0;transition:background .2s ease,transform .2s ease;
}
.index-row:hover{background:rgba(238,245,246,.6);text-decoration:none;transform:translateX(2px)}
.index-row .num{font-family:var(--serif);font-size:18px;color:var(--sand-500);letter-spacing:.04em}
.index-row h3{font-size:17px;line-height:1.4;font-family:var(--sans);font-weight:600}
.index-row .desc{display:block;font-size:13px;color:var(--muted);margin-top:4px;line-height:1.6}
.index-row .count{font-size:12px;color:var(--muted);text-align:right;line-height:1.5}
.index-row .count b{display:block;font-family:var(--serif);font-size:15px;color:var(--ink);font-weight:600}
.index-row .arrow{color:var(--brand-600);font-size:16px;transition:transform .2s ease;text-align:right}
.index-row:hover .arrow{transform:translateX(3px)}

/* ---------- entry cards ---------- */
.entry-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.entry-card{
  display:grid;grid-template-columns:132px 1fr;gap:16px;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px;text-decoration:none;color:inherit;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-100);text-decoration:none}
.entry-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-sm);border:1px solid var(--line)}
.entry-card .badge{
  display:inline-block;font-size:12px;color:var(--brand-700);background:var(--brand-50);
  border-radius:999px;padding:2px 10px;margin-bottom:8px;
}
.entry-card h3{font-size:17px;line-height:1.45;font-family:var(--sans);font-weight:600;color:var(--ink)}
.entry-card:hover h3{color:var(--brand-700)}
.entry-card p{font-size:13px;color:var(--muted);line-height:1.7;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.entry-card .meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px;font-size:12px;color:var(--muted)}

/* ---------- related links ---------- */
.link-group{display:flex;flex-wrap:wrap;gap:10px}
.chip-link{
  display:inline-flex;align-items:center;min-height:44px;padding:0 18px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);font-size:14px;color:var(--ink);
  text-decoration:none;transition:border-color .2s ease,background .2s ease,color .2s ease;
}
.chip-link:hover{border-color:var(--brand-500);background:var(--brand-50);color:var(--brand-700);text-decoration:none}

/* ---------- share band ---------- */
.share-band{
  margin-top:72px;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;
  background:
    linear-gradient(rgba(226,231,230,.55) 1px,transparent 1px) 0 0/32px 32px,
    linear-gradient(90deg,rgba(226,231,230,.55) 1px,transparent 1px) 0 0/32px 32px,
    var(--brand-50);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.share-band h2{font-size:clamp(22px,2.6vw,28px)}
.share-band p{margin-top:8px;font-size:14px;color:var(--muted);max-width:520px}
.share-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- faq ---------- */
.faq-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-sm)}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);min-height:48px;
  transition:background .2s ease,color .2s ease;
}
.faq-q:hover{background:var(--brand-50);color:var(--brand-700)}
.faq-icon{position:relative;width:20px;height:20px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);transform:translate(-50%,-50%);border-radius:2px}
.faq-icon::before{width:14px;height:1.6px}
.faq-icon::after{width:1.6px;height:14px;transition:transform .25s ease,opacity .25s ease}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--muted);max-width:760px}

/* ---------- footer ---------- */
.site-footer{margin-top:96px;background:var(--brand-900);color:rgba(255,255,255,.72);padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.site-footer .brand-text{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.6)}
.site-footer .brand-mark{background:rgba(255,255,255,.12)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:300px}
.footer-contact{margin-top:14px;font-size:13px;line-height:1.9;color:rgba(255,255,255,.55)}
.footer-col h4{font-family:var(--sans);font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;letter-spacing:.04em}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.7);text-decoration:none;transition:color .2s ease}
.footer-col a:hover{color:#fff;text-decoration:none}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:12px;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}

/* ---------- toast ---------- */
.toast{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,20px);
  background:rgba(18,48,62,.95);color:#fff;font-size:14px;padding:10px 22px;border-radius:999px;
  opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;z-index:200;
}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:block}
  main{padding-top:104px}
  .cover-wall{grid-template-columns:1fr}
  .cover-main{aspect-ratio:16/9}
  .cover-side{grid-template-rows:none;grid-template-columns:1fr 1fr}
  .cover-sm{min-height:170px;aspect-ratio:16/10}
  .index-grid{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding-top:48px}
  .section:last-of-type{padding-bottom:48px}
  .entry-grid{grid-template-columns:1fr}
  .entry-card{grid-template-columns:104px 1fr;gap:14px;padding:14px}
  .cover-side{grid-template-columns:1fr}
  .cover-sm{aspect-ratio:16/9;min-height:0}
  .share-band{padding:24px;margin-top:48px}
  .share-actions{width:100%}
  .share-actions .btn{flex:1 1 auto}
  .site-footer{margin-top:64px;padding:48px 0 28px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .meta-strip div{padding-right:18px;margin-right:18px}
}
@media (max-width:520px){
  .site-header{padding:0 14px;top:12px}
  .nav-shell{padding:0 8px 0 14px;height:60px}
  .brand-text{font-size:16px}
  .brand-sub{font-size:10px}
  main{padding-top:96px}
  .page-hero h1{font-size:28px}
  .index-row{grid-template-columns:40px 1fr 20px;gap:10px}
  .index-row .count{display:none}
  .entry-card{grid-template-columns:88px 1fr}
  .faq-q{font-size:15px;padding:16px}
  .faq-a p{padding:0 16px 18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --paper:#F7F7F4;
  --surface:#FFFFFF;
  --ink:#16262C;
  --ink-soft:#1B2C33;
  --muted:#5D7076;
  --line:#E2E7E6;
  --brand-50:#EEF5F6;
  --brand-100:#D9E8EA;
  --brand-500:#3C7F95;
  --brand-600:#2A647C;
  --brand-700:#1F5066;
  --brand-900:#12303E;
  --sand-100:#F3E9E1;
  --sand-500:#B5764F;
  --sand-700:#8C5738;
  --danger:#B4433A;
  --success:#2F7D5B;
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:12px;
  --shadow-card:0 1px 2px rgba(18,48,62,.04), 0 18px 40px -24px rgba(18,48,62,.22);
  --shadow-hover:0 2px 4px rgba(18,48,62,.06), 0 24px 56px -24px rgba(18,48,62,.28);
  --container:1200px;
  --font-serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:600}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}

/* ============ Header / Nav ============ */
.site-header{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:80;
  padding:0 16px;
}
.nav-shell{
  max-width:var(--container);
  margin:0 auto;
  min-height:64px;
  display:flex;
  align-items:center;
  gap:18px;
  padding:8px 10px 8px 18px;
  background:rgba(255,255,255,.78);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:0 10px 34px -22px rgba(18,48,62,.5);
  transition:background .18s ease, box-shadow .18s ease;
}
.site-header.scrolled .nav-shell{
  background:rgba(255,255,255,.94);
  box-shadow:0 14px 40px -22px rgba(18,48,62,.55);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:36px;height:36px;flex:none;
  display:grid;place-items:center;
  border-radius:50%;
  background:var(--brand-700);
  box-shadow:inset 0 0 0 1px rgba(217,232,234,.28);
}
.brand-mark svg{width:21px;height:21px;display:block}
.brand-text{
  display:block;
  font-family:var(--font-serif);
  font-size:17px;
  font-weight:600;
  line-height:1.2;
  letter-spacing:.05em;
  color:var(--brand-900);
}
.brand-sub{
  display:block;
  font-size:10.5px;
  line-height:1.5;
  letter-spacing:.1em;
  color:var(--muted);
}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 14px;
  font-size:14px;
  line-height:1.4;
  color:var(--muted);
  border-radius:999px;
  transition:color .18s ease, background-color .18s ease;
}
.nav-link:hover{color:var(--brand-700);background:var(--brand-50)}
.nav-link.active{color:var(--brand-700);background:var(--brand-50);font-weight:600}
.nav-link.active::after{
  content:"";
  width:5px;height:5px;border-radius:50%;
  background:var(--sand-500);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  font-size:14px;
  font-weight:600;
  line-height:1.4;
  border-radius:999px;
  border:1px solid transparent;
  transition:background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease, box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-700);color:#fff;min-height:48px}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-ghost{
  background:var(--surface);
  border-color:var(--line);
  color:var(--ink);
}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-50)}
.btn-ghost:active{transform:none}
.btn-sm{min-height:40px;padding:0 18px;font-size:13px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.nav-cta{flex:none}
.btn.is-saved{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-700)}
.nav-toggle{
  display:none;
  width:44px;height:44px;flex:none;
  margin-left:auto;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--surface);
  position:relative;
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  display:block;
  width:16px;height:2px;
  border-radius:2px;
  background:var(--ink);
  box-shadow:0 -5px 0 var(--ink), 0 5px 0 var(--ink);
  transition:transform .2s ease, box-shadow .2s ease;
}
.nav-toggle.is-open span{transform:rotate(45deg);box-shadow:none;background:var(--brand-700)}
.nav-panel{display:none}

/* ============ Page shell ============ */
.page-main{padding-top:124px;padding-bottom:0}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  padding:0 0 22px;
}
.breadcrumb a{color:var(--brand-700)}
.breadcrumb a:hover{text-decoration:underline;text-underline-offset:4px}
.breadcrumb .sep{color:#B9C6C9}
.breadcrumb .current{color:var(--muted)}

/* ============ Article header ============ */
.article-header{max-width:860px}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1.6;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--muted);
}
.badge-brand{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700)}
.article-title{
  font-family:var(--font-serif);
  font-size:clamp(28px,4vw,44px);
  line-height:1.28;
  font-weight:600;
  letter-spacing:.01em;
  margin:18px 0 0;
  color:var(--brand-900);
  word-break:break-word;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:20px;
  font-size:13px;
  color:var(--muted);
}
.meta-row .dot{color:#BFCBCE}
.meta-row span{display:inline-flex;align-items:center;gap:6px}
.article-actions{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.article-cover{
  margin:32px 0 0;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow-card);
}
.article-cover img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.article-cover figcaption{
  padding:12px 20px 14px;
  font-size:13px;
  color:var(--muted);
  border-top:1px solid var(--line);
  background:var(--surface);
}

/* ============ Article layout ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:56px;
  padding-top:44px;
  padding-bottom:8px;
  align-items:start;
}
.article-body{
  max-width:720px;
  width:100%;
  font-size:18px;
  line-height:1.9;
  color:var(--ink-soft);
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-family:var(--font-serif);
  font-size:clamp(22px,2.4vw,27px);
  line-height:1.4;
  font-weight:600;
  color:var(--brand-900);
  margin:2.1em 0 .65em;
  padding-left:14px;
  border-left:3px solid var(--brand-500);
  scroll-margin-top:104px;
}
.article-body h3{
  font-size:19px;
  line-height:1.5;
  font-weight:600;
  color:var(--ink);
  margin:1.8em 0 .55em;
  scroll-margin-top:104px;
}
.article-body h4{
  font-size:17px;
  margin:1.5em 0 .5em;
  color:var(--ink);
}
.article-body p{margin:0 0 1.2em}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.42em 0}
.article-body li::marker{color:var(--brand-500)}
.article-body a{
  color:var(--brand-700);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
}
.article-body a:hover{background:var(--brand-50)}
.article-body strong{color:var(--brand-900);font-weight:600}
.article-body blockquote{
  margin:1.6em 0;
  padding:16px 22px;
  border-left:3px solid var(--sand-500);
  background:var(--sand-100);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:#3A4A50;
  font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:1.5em 0;width:100%;height:auto}
.article-body figure{margin:1.6em 0}
.article-body figure img{margin:0}
.article-body figcaption{
  font-size:13px;
  color:var(--muted);
  text-align:center;
  margin-top:10px;
  line-height:1.7;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  display:block;
  overflow-x:auto;
  font-size:15px;
  line-height:1.7;
  margin:1.5em 0;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
  min-width:110px;
}
.article-body th{background:var(--brand-50);color:var(--brand-700);font-weight:600}
.article-body code{
  background:var(--brand-50);
  color:var(--brand-700);
  padding:2px 6px;
  border-radius:6px;
  font-size:.9em;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

/* Toc */
.article-aside{position:relative}
.toc-card{
  position:sticky;
  top:104px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px 18px;
  box-shadow:var(--shadow-card);
}
.toc-label{
  display:block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--muted);
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
  margin-bottom:10px;
}
.toc-nav{display:flex;flex-direction:column;gap:1px;max-height:60vh;overflow:auto}
.toc-nav a{
  display:block;
  font-size:13px;
  line-height:1.6;
  color:var(--muted);
  padding:7px 0 7px 12px;
  border-left:2px solid transparent;
  transition:color .16s ease, border-color .16s ease;
  word-break:break-word;
}
.toc-nav a:hover{color:var(--brand-700)}
.toc-nav a.is-sub{padding-left:24px;font-size:12.5px}
.toc-nav a.active{border-left-color:var(--brand-600);color:var(--brand-700);font-weight:600}
.toc-empty{font-size:13px;color:var(--muted);padding:4px 0}

/* Empty state */
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--radius);
  padding:56px 24px;
  text-align:center;
  background:var(--surface);
}
.empty-state svg{width:32px;height:32px;margin:0 auto 14px;color:var(--brand-500)}
.empty-state h2{font-family:var(--font-serif);font-size:22px;color:var(--brand-900);margin-bottom:8px}
.empty-state p{font-size:14px;color:var(--muted);margin-bottom:18px}
.empty-state a{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
  border-bottom:1px solid var(--brand-500);
  padding-bottom:2px;
}

/* ============ Sections ============ */
.section{padding:72px 0 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:26px;
}
.section-title{
  font-family:var(--font-serif);
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.32;
  color:var(--brand-900);
}
.section-title .num{
  font-family:var(--font-serif);
  font-size:14px;
  color:var(--sand-500);
  letter-spacing:.14em;
  margin-right:10px;
  vertical-align:2px;
}
.section-link{
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
  white-space:nowrap;
}
.section-link:hover{text-decoration:underline;text-underline-offset:5px}

/* Related */
.related-scroll{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 2px 10px;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.related-scroll::-webkit-scrollbar{display:none}
.related-card{
  flex:0 0 320px;
  scroll-snap-align:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  display:flex;
  flex-direction:column;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.related-card .thumb{overflow:hidden}
.related-card img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .3s ease;
}
.related-card:hover img{transform:scale(1.03)}
.related-card .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.related-card .cat{
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--sand-700);
}
.related-card h3{
  font-size:16.5px;
  line-height:1.55;
  font-weight:600;
  color:var(--ink);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card:hover h3{color:var(--brand-700)}
.related-card .date{font-size:12px;color:var(--muted);margin-top:auto}

/* Prev / next */
.pager-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.pager-card{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:22px 24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.pager-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.pager-card .label{font-size:12px;letter-spacing:.12em;color:var(--muted)}
.pager-card .title{font-size:17px;font-weight:600;line-height:1.55;color:var(--brand-900)}
.pager-card .arrow{font-size:13px;color:var(--brand-700);font-weight:600}
.back-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:22px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
}
.back-link:hover{text-decoration:underline;text-underline-offset:5px}

/* CTA band */
.cta-band{
  margin-top:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:36px 40px;
  border-radius:var(--radius-lg);
  border:1px solid var(--brand-100);
  background-color:var(--brand-50);
  background-image:linear-gradient(to right, rgba(31,80,102,.055) 1px, transparent 1px),
                   linear-gradient(to bottom, rgba(31,80,102,.055) 1px, transparent 1px);
  background-size:28px 28px;
}
.cta-band h2{
  font-family:var(--font-serif);
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.35;
  color:var(--brand-900);
}
.cta-band p{
  margin-top:8px;
  font-size:14px;
  color:var(--muted);
  max-width:460px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:10px;flex:none}

/* toast */
.toast{
  position:fixed;
  left:50%;
  bottom:32px;
  transform:translate(-50%,16px);
  background:var(--brand-900);
  color:#fff;
  font-size:14px;
  padding:11px 22px;
  border-radius:999px;
  box-shadow:0 16px 40px -18px rgba(18,48,62,.7);
  opacity:0;
  pointer-events:none;
  transition:opacity .2s ease, transform .2s ease;
  z-index:120;
  max-width:88vw;
}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* mobile sticky actions */
.mobile-actions{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:90;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  gap:10px;
}
.mobile-actions .btn{flex:1;min-height:44px}

/* ============ Footer ============ */
.site-footer{
  margin-top:88px;
  background:var(--brand-900);
  color:#fff;
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.55)}
.footer-brand .brand-mark{background:rgba(217,232,234,.14);box-shadow:inset 0 0 0 1px rgba(217,232,234,.3)}
.footer-desc{
  margin-top:18px;
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.7);
  max-width:330px;
}
.footer-contact{
  margin-top:14px;
  font-size:13px;
  line-height:1.9;
  color:rgba(255,255,255,.5);
}
.footer-col h4{
  font-size:13px;
  letter-spacing:.14em;
  color:rgba(255,255,255,.55);
  margin-bottom:16px;
  font-weight:600;
}
.footer-col a{
  display:block;
  font-size:14px;
  line-height:2.05;
  color:rgba(255,255,255,.72);
  transition:color .18s ease;
}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:12px;
  color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}

/* ============ Responsive ============ */
@media (max-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .article-aside{display:none}
  .article-body{max-width:760px;margin:0 auto}
}
@media (max-width:1024px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .nav-shell{padding:8px 10px 8px 16px}
  .nav-panel{
    position:absolute;
    left:16px;right:16px;
    top:76px;
    display:none;
    flex-direction:column;
    gap:2px;
    padding:12px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:22px;
    box-shadow:0 24px 60px -28px rgba(18,48,62,.5);
  }
  .nav-panel.open{display:flex}
  .nav-panel a{
    display:flex;
    align-items:center;
    min-height:48px;
    padding:0 16px;
    border-radius:14px;
    font-size:15px;
    color:var(--ink);
  }
  .nav-panel a:hover{background:var(--brand-50);color:var(--brand-700)}
  .nav-panel a.active{background:var(--brand-50);color:var(--brand-700);font-weight:600}
  .nav-panel .btn{margin-top:6px;justify-content:center;min-height:46px;color:#fff;background:var(--brand-700)}
  .nav-panel .btn:hover{background:var(--brand-600);color:#fff}
  .page-main{padding-top:114px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  .container{padding-left:20px;padding-right:20px}
  .page-main{padding-top:106px}
  .article-title{font-size:clamp(25px,6.2vw,32px)}
  .article-cover{margin-top:24px;border-radius:var(--radius)}
  .article-layout{padding-top:32px}
  .article-body{font-size:17px;line-height:1.85}
  .article-body h2{font-size:21px;padding-left:12px}
  .article-body blockquote{font-size:15.5px;padding:14px 18px}
  .section{padding-top:52px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:20px}
  .related-card{flex:0 0 260px}
  .pager-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px;gap:18px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .mobile-actions{display:flex}
  .site-footer{margin-top:64px;padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;gap:8px;padding-bottom:32px}
  body.has-mobile-bar{padding-bottom:76px}
}
@media (max-width:520px){
  .brand-sub{display:none}
  .brand-text{font-size:16px}
  .article-actions{width:100%}
  .article-actions .btn{flex:1}
  .related-card{flex:0 0 240px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --paper:#F7F7F4;
  --surface:#FFFFFF;
  --ink:#16262C;
  --muted:#5D7076;
  --line:#E2E7E6;
  --brand-50:#EEF5F6;
  --brand-100:#D9E8EA;
  --brand-500:#3C7F95;
  --brand-600:#2A647C;
  --brand-700:#1F5066;
  --brand-900:#12303E;
  --sand-100:#F3E9E1;
  --sand-500:#B5764F;
  --sand-700:#8C5738;
  --danger:#B4433A;
  --ok:#2F7D5B;
  --radius-card:16px;
  --radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(18,48,62,.04), 0 18px 40px -24px rgba(18,48,62,.22);
  --shadow-hover:0 2px 4px rgba(18,48,62,.06), 0 24px 56px -24px rgba(18,48,62,.28);
  --font-serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;top:18px;left:0;right:0;z-index:80;
  padding:0 24px;
}
.nav-shell{
  max-width:1200px;margin:0 auto;height:64px;
  display:flex;align-items:center;gap:14px;
  padding:0 16px 0 18px;
  background:rgba(255,255,255,.78);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:var(--shadow-sm);
  transition:background .15s var(--ease),box-shadow .15s var(--ease);
}
.site-header.scrolled .nav-shell{
  background:rgba(255,255,255,.94);
  box-shadow:0 2px 4px rgba(18,48,62,.06),0 20px 44px -26px rgba(18,48,62,.3);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:50%;
  background:var(--brand-900);
  display:grid;place-items:center;flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;display:block;}
.brand-text{
  display:block;font-family:var(--font-serif);
  font-size:17px;font-weight:600;line-height:1.1;letter-spacing:.02em;
}
.brand-sub{
  display:block;font-size:11px;color:var(--muted);
  letter-spacing:.1em;margin-top:3px;line-height:1;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  font-size:14px;color:var(--ink);
  padding:9px 14px;border-radius:999px;
  transition:background .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{background:var(--brand-50);color:var(--brand-700);}
.nav-link.active{background:var(--brand-50);color:var(--brand-700);font-weight:600;}
.nav-link.active::before{
  content:"";display:inline-block;width:5px;height:5px;border-radius:50%;
  background:var(--brand-600);margin-right:7px;vertical-align:middle;
}
.nav-cta{margin-left:6px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  border-radius:50%;border:1px solid var(--line);background:#fff;
  position:relative;align-items:center;justify-content:center;
}
.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;
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-panel{display:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--brand-700);color:#fff;}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.btn-primary:active{transform:none;}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-50);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn[disabled],[aria-disabled="true"]{opacity:.45;pointer-events:none;}

/* ---------- 主区域 ---------- */
.page-main{padding-top:108px;}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);padding:16px 0 22px;
}
.crumbs a{color:var(--muted);transition:color .2s var(--ease);}
.crumbs a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:4px;}
.crumbs .sep{color:#C2CCCC;}
.crumbs .current{color:#8A9A9E;}

.page-head{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:40px;
  background-image:
    linear-gradient(100deg,rgba(247,247,244,.98) 0%,rgba(247,247,244,.94) 52%,rgba(247,247,244,.72) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
  box-shadow:var(--shadow-sm);
}
.eyebrow{
  font-size:12px;letter-spacing:.14em;color:var(--sand-700);
  font-weight:600;margin-bottom:14px;
}
.page-title{
  font-family:var(--font-serif);
  font-size:clamp(30px,4.2vw,44px);
  line-height:1.22;font-weight:600;letter-spacing:.01em;
  max-width:820px;
}
.lede{
  margin-top:16px;max-width:720px;
  font-size:16.5px;line-height:1.85;color:var(--muted);
}
.head-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;align-items:center;}
.meta-pill{
  display:inline-flex;align-items:center;gap:6px;
  height:32px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.meta-pill strong{color:var(--brand-700);font-weight:600;}
.head-share{margin-left:auto;display:flex;gap:8px;flex-wrap:wrap;}

/* ---------- 筛选栏 ---------- */
.filter-bar{
  position:sticky;top:96px;z-index:50;
  margin:32px 0 36px;
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  padding:14px 16px;
  background:rgba(247,247,244,.93);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow-sm);
}
.search-box{position:relative;flex:1 1 240px;min-width:200px;}
.search-box svg{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;color:var(--muted);pointer-events:none;
}
.search-box input{
  width:100%;height:48px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  padding:0 18px 0 44px;font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input::placeholder{color:#9AA9AC;}
.search-box input:focus{
  outline:none;border-color:var(--brand-500);
  box-shadow:0 0 0 3px var(--brand-100);
}
.chips{display:flex;gap:8px;flex-wrap:wrap;}
.chip{
  height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  font-size:14px;color:var(--ink);white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{border-color:var(--brand-500);color:var(--brand-700);}
.chip.is-active{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}
.sort-wrap{position:relative;flex:0 0 auto;margin-left:auto;}
.sort-wrap select{
  appearance:none;-webkit-appearance:none;
  height:38px;padding:0 38px 0 16px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  font-size:14px;cursor:pointer;
  transition:border-color .2s var(--ease);
}
.sort-wrap select:hover{border-color:var(--brand-500);}
.sort-wrap svg{
  position:absolute;right:14px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;color:var(--muted);pointer-events:none;
}

/* ---------- 3/9 分栏 ---------- */
.list-layout{display:grid;grid-template-columns:3fr 9fr;gap:32px;align-items:start;}
.aside-sticky{position:sticky;top:180px;display:flex;flex-direction:column;gap:16px;}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-sm);
}
.side-card h2,.side-card h3{
  font-size:14px;font-weight:600;letter-spacing:.06em;
  color:var(--ink);margin-bottom:12px;display:flex;align-items:center;gap:8px;
}
.side-num{
  font-family:var(--font-serif);font-size:12px;color:var(--sand-500);
  border:1px solid var(--sand-100);background:var(--sand-100);
  border-radius:999px;padding:1px 8px;
}
.side-card p{font-size:13.5px;line-height:1.85;color:var(--muted);}
.rule-list li{
  display:flex;gap:10px;font-size:13.5px;line-height:1.8;color:var(--muted);
  padding:10px 0;border-top:1px dashed var(--line);
}
.rule-list li:first-child{border-top:0;padding-top:0;}
.rule-list .rn{
  flex:0 0 auto;font-family:var(--font-serif);font-size:12px;color:var(--sand-700);
  padding-top:2px;
}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  font-size:12.5px;color:var(--brand-700);
  background:var(--brand-50);border:1px solid var(--brand-100);
  border-radius:999px;padding:4px 12px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.tag:hover{background:var(--brand-100);}

/* ---------- 条目清单 ---------- */
.list-head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;
  gap:12px;margin-bottom:6px;
}
.list-head h2{
  font-family:var(--font-serif);font-size:clamp(22px,2.4vw,28px);
  font-weight:600;line-height:1.3;
}
.list-count{font-size:13px;color:var(--muted);}
.list-count strong{color:var(--brand-700);font-weight:600;}
.entry-list{display:flex;flex-direction:column;}
.entry{
  display:grid;grid-template-columns:200px 1fr 40px;gap:22px;
  align-items:start;
  padding:22px 12px;margin:0 -12px;
  border-bottom:1px solid var(--line);
  border-radius:12px;
  transition:background .2s var(--ease);
}
.entry:first-child{border-top:1px solid var(--line);}
.entry:hover{background:rgba(238,245,246,.55);}
.entry-thumb{
  display:block;aspect-ratio:4/3;border-radius:12px;overflow:hidden;
  background:var(--brand-50);
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.entry:hover .entry-thumb img{transform:scale(1.03);}
.badge-cat{
  display:inline-block;font-size:12px;line-height:1;
  padding:5px 11px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-700);
  border:1px solid var(--brand-100);margin-bottom:10px;
}
.entry-title{
  font-size:19px;font-weight:600;line-height:1.5;margin-bottom:8px;
  font-family:var(--font-sans);
}
.entry-title a{transition:color .2s var(--ease);}
.entry-title a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:4px;}
.entry-sum{
  font-size:14.5px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:12px;
}
.entry-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:12.5px;color:#8A9A9E;
}
.dot{width:3px;height:3px;border-radius:50%;background:#C2CCCC;display:inline-block;}
.entry-arrow{
  width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--brand-700);
  align-self:center;flex:0 0 auto;
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.entry:hover .entry-arrow{transform:translateX(3px);border-color:var(--brand-500);background:var(--brand-50);}
.empty-state{
  display:none;border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:48px 24px;text-align:center;color:var(--muted);
}
.empty-state.is-visible{display:block;}
.empty-state svg{width:26px;height:26px;margin:0 auto 12px;color:var(--brand-500);}
.empty-state p{font-size:14px;line-height:1.8;}
.empty-state a{color:var(--brand-700);text-decoration:underline;text-underline-offset:4px;}

/* ---------- 板块通用 ---------- */
.block{margin-top:80px;}
.block-head{margin-bottom:24px;}
.block-head h2{
  font-family:var(--font-serif);font-size:clamp(24px,3vw,32px);
  font-weight:600;line-height:1.3;
}
.block-head p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--muted);max-width:680px;}

/* ---------- 推荐条目表单 ---------- */
.form-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px;box-shadow:var(--shadow-sm);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px;}
.field{display:flex;flex-direction:column;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;font-weight:600;margin-bottom:8px;color:var(--ink);}
.field label span{color:var(--danger);}
.field input,.field select,.field textarea{
  width:100%;height:48px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  padding:0 14px;font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100);
}
.field select{appearance:none;-webkit-appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235D7076' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:40px;
}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.7;}
.check-row input[type="checkbox"]{width:18px;height:18px;accent-color:var(--brand-700);margin-top:3px;flex:0 0 auto;}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:24px;}
.form-note{font-size:12.5px;color:#8A9A9E;}

/* ---------- FAQ ---------- */
.faq{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;
  font-size:16px;font-weight:500;color:var(--ink);line-height:1.6;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.faq-q:hover{color:var(--brand-700);background:rgba(238,245,246,.5);}
.faq-icon{
  flex:0 0 auto;width:20px;height:20px;position:relative;
  transition:transform .25s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-700);border-radius:2px;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s var(--ease);}
.faq-item.open .faq-a{max-height:360px;}
.faq-a p{
  padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--muted);max-width:780px;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand-50);
  border:1px solid var(--brand-100);
  border-radius:var(--radius-lg);
  padding:36px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(60,127,149,.09) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(60,127,149,.09) 1px,transparent 1px);
  background-size:36px 36px;
  pointer-events:none;
}
.cta-band > *{position:relative;}
.cta-band h2{font-family:var(--font-serif);font-size:clamp(22px,2.6vw,28px);font-weight:600;line-height:1.3;}
.cta-band p{margin-top:8px;font-size:14.5px;color:var(--muted);}
.cta-actions{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;background:var(--brand-900);color:#fff;
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-sub{color:rgba(255,255,255,.6);}
.site-footer .brand-mark{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);}
.footer-desc{
  margin:18px 0 12px;max-width:330px;
  font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);
}
.footer-contact{font-size:13px;line-height:1.9;color:rgba(255,255,255,.55);}
.footer-col h4{font-size:14px;font-weight:600;letter-spacing:.06em;margin:0 0 14px;color:#fff;}
.footer-col a{
  display:block;font-size:14px;color:rgba(255,255,255,.7);
  padding:6px 0;transition:color .2s var(--ease);
}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  margin-top:40px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:12px;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.45);transition:color .2s var(--ease);}
.footer-bottom a:hover{color:rgba(255,255,255,.8);}

/* ---------- Toast ---------- */
.toast{
  position:fixed;left:50%;bottom:32px;z-index:200;
  transform:translate(-50%,16px);
  background:rgba(18,48,62,.95);color:#fff;
  padding:12px 24px;border-radius:999px;font-size:14px;
  opacity:0;pointer-events:none;
  transition:opacity .25s var(--ease),transform .25s var(--ease);
  box-shadow:0 18px 40px -20px rgba(18,48,62,.6);
}
.toast.show{opacity:1;transform:translate(-50%,0);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-panel{
    display:none;flex-direction:column;gap:4px;
    position:absolute;left:24px;right:24px;top:74px;
    background:#fff;border:1px solid var(--line);
    border-radius:20px;padding:12px;
    box-shadow:var(--shadow-hover);
  }
  .nav-panel.open{display:flex;}
  .nav-panel a{
    padding:13px 16px;border-radius:12px;font-size:15px;color:var(--ink);
    min-height:48px;display:flex;align-items:center;
  }
  .nav-panel a.active{background:var(--brand-50);color:var(--brand-700);font-weight:600;}
  .nav-panel .btn{justify-content:center;margin-top:6px;height:48px;}
  .list-layout{grid-template-columns:1fr;gap:28px;}
  .aside-sticky{position:static;flex-direction:row;flex-wrap:wrap;}
  .aside-sticky .side-card{flex:1 1 260px;}
  .filter-bar{position:static;}
  .sort-wrap{margin-left:0;}
  .page-head{padding:32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .site-header{padding:0 16px;top:14px;}
  .nav-panel{left:16px;right:16px;top:70px;}
  .page-main{padding-top:94px;}
  .page-head{padding:26px 22px;border-radius:20px;background-image:linear-gradient(160deg,rgba(247,247,244,.98),rgba(247,247,244,.9)),url('/assets/images/backpic/back-2.webp');}
  .head-share{margin-left:0;width:100%;}
  .filter-bar{padding:12px;border-radius:16px;}
  .chip{height:36px;padding:0 14px;font-size:13.5px;}
  .chips{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;width:100%;-webkit-overflow-scrolling:touch;}
  .chips::-webkit-scrollbar{display:none;}
  .sort-wrap{width:100%;}
  .sort-wrap select{width:100%;}
  .entry{grid-template-columns:96px 1fr;gap:14px;padding:20px 8px;margin:0 -8px;}
  .entry-arrow{display:none;}
  .entry-title{font-size:17px;}
  .entry-sum{font-size:14px;}
  .form-panel{padding:24px 20px;border-radius:20px;}
  .form-grid{grid-template-columns:1fr;}
  .block{margin-top:56px;}
  .cta-band{padding:26px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
  .site-footer{padding:48px 0 24px;margin-top:64px;}
  .faq-a p{font-size:14.5px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .meta-pill{font-size:12px;padding:0 12px;}
  .entry-thumb{border-radius:10px;}
  .entry-title{font-size:16.5px;}
  .head-share .btn{flex:1 1 auto;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}