/* roulang page: index */
:root{
  --bg: #0d0b10;
  --bg-2: #141018;
  --bg-3: #1a1520;
  --panel: rgba(18, 14, 20, .86);
  --panel-solid: #17131b;
  --line: rgba(255,255,255,.08);
  --line-strong: rgba(255,255,255,.14);
  --text: #f3ece7;
  --text-2: #d4c8c1;
  --text-3: #a89995;
  --muted: #8f7f7a;
  --accent: #b23b65;
  --accent-2: #df9c3e;
  --accent-soft: rgba(178,59,101,.16);
  --accent-soft-2: rgba(223,156,62,.14);
  --shadow: 0 24px 60px rgba(0,0,0,.36);
  --shadow-soft: 0 14px 28px rgba(0,0,0,.22);
  --radius: 18px;
  --radius-sm: 14px;
  --container: 1280px;
  --gap: 24px;
  --gap-sm: 14px;
  --header-h: 76px;
  --transition: 180ms ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  color:var(--text);
  background:
    radial-gradient(1100px 650px at 15% -10%, rgba(178,59,101,.18), transparent 52%),
    radial-gradient(900px 540px at 92% 0%, rgba(223,156,62,.10), transparent 40%),
    linear-gradient(180deg, #0f0b11 0%, #0b0910 48%, #09070c 100%);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.012) 1px, transparent 1px);
  background-size:72px 72px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.18), transparent 62%);
  opacity:.28;
  z-index:0;
}
a{
  color:inherit;
  text-decoration:none;
  transition:color var(--transition), border-color var(--transition), background var(--transition), transform var(--transition), box-shadow var(--transition), opacity var(--transition);
}
img{
  display:block;
  max-width:100%;
  height:auto;
}
button,input,textarea,select{
  font:inherit;
}
button{
  cursor:pointer;
}
::selection{
  background:rgba(178,59,101,.35);
  color:#fff;
}
.skip-link{
  position:absolute;
  left:-9999px;
  top:10px;
  z-index:999;
  background:var(--accent);
  color:#fff;
  padding:10px 14px;
  border-radius:999px;
}
.skip-link:focus{left:16px}
.container{
  width:min(var(--container), calc(100% - 32px));
  margin:0 auto;
  position:relative;
  z-index:1;
}
.topbar{
  position:relative;
  z-index:8;
  background:rgba(8,6,10,.72);
  border-bottom:1px solid var(--line);
  backdrop-filter: blur(14px);
}
.topbar .container{
  min-height:44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:8px 0;
  font-size:13px;
  color:var(--text-3);
}
.topbar strong{
  color:var(--text);
  font-weight:600;
}
.topbar .chips{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 10px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  font-size:12px;
}
header.site-header{
  position:sticky;
  top:0;
  z-index:10;
  background:rgba(13,11,16,.82);
  backdrop-filter: blur(18px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.navbar{
  min-height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
}
.brand-mark{
  width:42px;
  height:42px;
  border-radius:14px;
  background:
    linear-gradient(145deg, rgba(178,59,101,.96), rgba(223,156,62,.62));
  box-shadow:0 12px 28px rgba(178,59,101,.24);
  display:grid;
  place-items:center;
  color:#fff;
  font-weight:800;
  letter-spacing:.5px;
  flex:0 0 auto;
}
.brand-text{
  min-width:0;
}
.brand-text .name{
  font-weight:800;
  letter-spacing:.2px;
  font-size:16px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.brand-text .sub{
  color:var(--text-3);
  font-size:12px;
  margin-top:2px;
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:8px;
}
.nav-links a{
  padding:10px 14px;
  border-radius:999px;
  color:var(--text-2);
  border:1px solid transparent;
}
.nav-links a:hover,
.nav-links a:focus-visible{
  color:var(--text);
  border-color:var(--line-strong);
  background:rgba(255,255,255,.04);
  outline:none;
}
.nav-links a.active,
.nav-links a[aria-current="page"]{
  color:#fff;
  background:linear-gradient(135deg, rgba(178,59,101,.22), rgba(223,156,62,.12));
  border-color:rgba(178,59,101,.32);
  box-shadow:0 10px 22px rgba(178,59,101,.12);
}
.nav-cta{
  padding:11px 16px;
  border-radius:999px;
  background:linear-gradient(135deg, var(--accent), #8d2749);
  color:#fff;
  font-weight:700;
  border:1px solid rgba(255,255,255,.05);
  box-shadow:0 14px 30px rgba(178,59,101,.18);
}
.nav-cta:hover,
.nav-cta:focus-visible{
  transform:translateY(-1px);
  box-shadow:0 18px 36px rgba(178,59,101,.26);
  outline:none;
}
.hero{
  position:relative;
  padding:28px 0 10px;
}
.hero-panel{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:26px;
  background:
    linear-gradient(135deg, rgba(12,9,15,.92), rgba(17,12,20,.82)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  box-shadow:var(--shadow);
}
.hero-panel::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(800px 420px at 18% 20%, rgba(178,59,101,.26), transparent 58%),
    linear-gradient(90deg, rgba(10,8,12,.72) 0%, rgba(10,8,12,.36) 52%, rgba(10,8,12,.68) 100%);
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:1.18fr .82fr;
  gap:26px;
  align-items:stretch;
  padding:36px;
}
.hero-copy{
  padding:10px 2px 10px 0;
}
.badge-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:16px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  font-size:13px;
}
.badge--accent{
  background:rgba(178,59,101,.16);
  border-color:rgba(178,59,101,.26);
  color:#ffdfe7;
}
.hero h1{
  margin:0;
  font-size:clamp(30px, 4vw, 46px);
  line-height:1.12;
  letter-spacing:-.4px;
  max-width:12em;
}
.hero p{
  margin:18px 0 0;
  max-width:38em;
  color:var(--text-2);
  font-size:16px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:46px;
  padding:0 18px;
  border-radius:14px;
  border:1px solid transparent;
  font-weight:700;
  letter-spacing:.2px;
  transition:transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), color var(--transition), opacity var(--transition);
}
.btn:hover,
.btn:focus-visible{
  transform:translateY(-1px);
  outline:none;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg, var(--accent), #8f284a);
  box-shadow:0 16px 32px rgba(178,59,101,.24);
}
.btn-primary:hover,
.btn-primary:focus-visible{
  box-shadow:0 20px 40px rgba(178,59,101,.30);
}
.btn-secondary{
  color:var(--text);
  background:rgba(255,255,255,.04);
  border-color:var(--line);
}
.btn-secondary:hover,
.btn-secondary:focus-visible{
  border-color:rgba(223,156,62,.28);
  background:rgba(223,156,62,.10);
}
.btn-soft{
  color:#f7e8dd;
  background:rgba(223,156,62,.10);
  border-color:rgba(223,156,62,.20);
}
.hero-notes{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:12px;
  margin-top:26px;
}
.note{
  padding:14px 14px 13px;
  border-radius:16px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.note .k{
  display:block;
  color:#fff;
  font-weight:700;
  font-size:14px;
}
.note .v{
  display:block;
  margin-top:6px;
  color:var(--text-3);
  font-size:13px;
  line-height:1.55;
}
.hero-side{
  display:flex;
  align-items:stretch;
}
.feature-card{
  width:100%;
  border-radius:22px;
  overflow:hidden;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:var(--shadow-soft);
  display:flex;
  flex-direction:column;
}
.feature-media{
  position:relative;
  min-height:280px;
  background:
    linear-gradient(180deg, rgba(6,6,8,.08), rgba(6,6,8,.58)),
    url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
}
.feature-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(0,0,0,.08), rgba(0,0,0,.42));
}
.feature-content{
  padding:18px 18px 16px;
  background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.01));
}
.feature-content h2{
  margin:0;
  font-size:20px;
  line-height:1.25;
}
.feature-content p{
  margin:10px 0 0;
  color:var(--text-3);
  font-size:14px;
}
.feature-list{
  margin:14px 0 0;
  padding:0;
  list-style:none;
  display:grid;
  gap:10px;
}
.feature-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  color:var(--text-2);
  font-size:14px;
}
.feature-list li::before{
  content:"";
  width:8px;
  height:8px;
  margin-top:8px;
  border-radius:999px;
  background:linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow:0 0 0 4px rgba(178,59,101,.10);
  flex:0 0 auto;
}
.section{
  padding:26px 0;
  position:relative;
}
.section-head{
  display:flex;
  align-items:end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:16px;
}
.section-title{
  margin:0;
  font-size:24px;
  line-height:1.2;
  letter-spacing:-.2px;
}
.section-desc{
  margin:0;
  color:var(--text-3);
  max-width:56ch;
  font-size:14px;
}
.surface{
  border:1px solid var(--line);
  border-radius:24px;
  background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015));
  box-shadow:var(--shadow-soft);
}
.quick-grid{
  display:grid;
  grid-template-columns:repeat(4, minmax(0,1fr));
  gap:14px;
}
.quick-card{
  padding:18px;
  border-radius:18px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  min-height:150px;
  transition:transform var(--transition), border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.quick-card:hover{
  transform:translateY(-2px);
  border-color:rgba(178,59,101,.22);
  box-shadow:0 18px 38px rgba(0,0,0,.20);
  background:rgba(255,255,255,.045);
}
.quick-icon{
  width:42px;
  height:42px;
  border-radius:14px;
  display:grid;
  place-items:center;
  margin-bottom:14px;
  color:#fff;
  background:linear-gradient(135deg, rgba(178,59,101,.92), rgba(223,156,62,.60));
  box-shadow:0 12px 24px rgba(178,59,101,.18);
  font-size:18px;
}
.quick-card h3{
  margin:0;
  font-size:16px;
}
.quick-card p{
  margin:8px 0 0;
  color:var(--text-3);
  font-size:14px;
  line-height:1.6;
}
.highlight-grid{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:14px;
}
.panel-card{
  overflow:hidden;
  border-radius:24px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  min-height:100%;
}
.panel-card.big{
  background:
    linear-gradient(180deg, rgba(0,0,0,.04), rgba(0,0,0,.36)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  position:relative;
}
.panel-card.big::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg, rgba(8,7,11,.82), rgba(8,7,11,.26) 48%, rgba(8,7,11,.72));
}
.panel-card.big .content{
  position:relative;
  padding:26px;
  min-height:320px;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
}
.panel-card .eyebrow{
  display:inline-flex;
  width:max-content;
  padding:7px 10px;
  border-radius:999px;
  background:rgba(223,156,62,.14);
  border:1px solid rgba(223,156,62,.20);
  color:#ffe4bf;
  font-size:12px;
  margin-bottom:12px;
}
.panel-card h3{
  margin:0;
  font-size:24px;
  line-height:1.18;
}
.panel-card p{
  margin:10px 0 0;
  max-width:34em;
  color:var(--text-2);
  font-size:14px;
}
.panel-card .actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:18px;
}
.side-stack{
  display:grid;
  gap:14px;
}
.mini-card{
  display:grid;
  grid-template-columns:120px 1fr;
  gap:0;
  overflow:hidden;
  border-radius:20px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  transition:transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.mini-card:hover{
  transform:translateY(-2px);
  border-color:rgba(223,156,62,.24);
  box-shadow:0 18px 36px rgba(0,0,0,.20);
}
.mini-card .img{
  min-height:150px;
  background-size:cover;
  background-position:center;
  position:relative;
}
.mini-card .body{
  padding:16px 16px 14px;
}
.mini-card h4{
  margin:0;
  font-size:16px;
}
.mini-card p{
  margin:8px 0 0;
  color:var(--text-3);
  font-size:13px;
  line-height:1.6;
}
.mini-meta{
  margin-top:12px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  font-size:12px;
}
.tag.accent{
  border-color:rgba(178,59,101,.22);
  background:rgba(178,59,101,.12);
  color:#ffdce6;
}
.latest-wrap{
  border-radius:24px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  overflow:hidden;
}
.latest-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:0;
}
.post-card{
  display:flex;
  gap:16px;
  padding:18px;
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
  min-height:180px;
  transition:background var(--transition), transform var(--transition), border-color var(--transition);
}
.post-card:nth-child(2n){border-right:none}
.post-card:hover{
  background:rgba(255,255,255,.035);
}
.post-thumb{
  width:138px;
  min-width:138px;
  border-radius:16px;
  overflow:hidden;
  position:relative;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
}
.post-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio: 4 / 5;
}
.post-body{
  min-width:0;
  display:flex;
  flex-direction:column;
}
.post-body h3{
  margin:0;
  font-size:18px;
  line-height:1.35;
}
.post-body p{
  margin:10px 0 0;
  color:var(--text-3);
  font-size:14px;
  line-height:1.65;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-meta{
  margin-top:auto;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
  padding-top:12px;
}
.post-meta .time,
.post-meta .cat{
  font-size:12px;
}
.post-link{
  margin-left:auto;
  color:#ffd6df;
  font-size:13px;
  font-weight:700;
}
.post-link:hover{color:#fff}
.empty-state{
  padding:34px 22px;
  text-align:center;
  color:var(--text-3);
}
.empty-state strong{
  display:block;
  color:var(--text);
  margin-bottom:8px;
  font-size:18px;
}
.reading-grid{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:14px;
}
.read-card{
  padding:20px;
  border-radius:20px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.read-card .num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:12px;
  background:rgba(178,59,101,.16);
  border:1px solid rgba(178,59,101,.24);
  color:#ffdbe4;
  font-weight:800;
  margin-bottom:14px;
}
.read-card h3{
  margin:0;
  font-size:16px;
}
.read-card p{
  margin:8px 0 0;
  color:var(--text-3);
  font-size:14px;
  line-height:1.7;
}
.faq{
  display:grid;
  gap:12px;
}
.faq-item{
  border:1px solid var(--line);
  border-radius:18px;
  background:rgba(255,255,255,.03);
  overflow:hidden;
}
.faq-btn{
  width:100%;
  border:0;
  background:transparent;
  color:var(--text);
  padding:18px 18px;
  text-align:left;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  cursor:pointer;
}
.faq-btn span{
  font-weight:700;
  font-size:16px;
  line-height:1.35;
}
.faq-btn i{
  width:28px;
  height:28px;
  flex:0 0 auto;
  border-radius:999px;
  display:grid;
  place-items:center;
  background:rgba(255,255,255,.05);
  color:var(--text-2);
  transition:transform var(--transition), background var(--transition);
  font-style:normal;
}
.faq-item.open .faq-btn i{
  transform:rotate(45deg);
  background:rgba(178,59,101,.18);
  color:#fff;
}
.faq-panel{
  display:none;
  padding:0 18px 18px;
  color:var(--text-3);
  font-size:14px;
  line-height:1.78;
}
.faq-item.open .faq-panel{display:block}
.cta-box{
  border-radius:26px;
  border:1px solid rgba(178,59,101,.20);
  background:
    radial-gradient(700px 220px at 20% 0%, rgba(178,59,101,.22), transparent 55%),
    linear-gradient(135deg, rgba(23,17,26,.94), rgba(17,13,20,.92));
  box-shadow:var(--shadow-soft);
  overflow:hidden;
}
.cta-inner{
  padding:28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.cta-inner h2{
  margin:0;
  font-size:24px;
}
.cta-inner p{
  margin:8px 0 0;
  color:var(--text-2);
  max-width:52ch;
  font-size:14px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:flex-end;
}
footer.site-footer{
  margin-top:26px;
  padding:30px 0 26px;
  background:linear-gradient(180deg, rgba(10,8,12,.35), rgba(8,6,10,.82));
  border-top:1px solid rgba(255,255,255,.06);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr .8fr .8fr 1fr;
  gap:18px;
  padding:4px 0 18px;
}
.footer-col{
  color:var(--text-3);
}
.footer-col h3{
  margin:0 0 14px;
  color:var(--text);
  font-size:16px;
}
.footer-col p{
  margin:0;
  font-size:14px;
  line-height:1.8;
}
.footer-links{
  display:grid;
  gap:10px;
}
.footer-links a{
  color:var(--text-2);
  font-size:14px;
}
.footer-links a:hover,
.footer-links a:focus-visible{
  color:#fff;
  outline:none;
}
.footer-meta{
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  color:var(--text-3);
  font-size:13px;
}
.footer-meta a{
  color:var(--text-2);
}
.footer-meta a:hover{color:#fff}
.back-top{
  position:fixed;
  right:18px;
  bottom:18px;
  width:46px;
  height:46px;
  border-radius:16px;
  border:1px solid var(--line);
  background:rgba(15,11,18,.8);
  backdrop-filter: blur(12px);
  color:var(--text);
  display:grid;
  place-items:center;
  box-shadow:var(--shadow-soft);
  z-index:20;
}
.back-top:hover,
.back-top:focus-visible{
  transform:translateY(-2px);
  border-color:rgba(223,156,62,.24);
  outline:none;
}
.content-section{
  padding-bottom:8px;
}
#latest,
#faq,
#contact,
#reading{
  scroll-margin-top:96px;
}
@media (max-width: 1100px){
  .hero-inner,
  .highlight-grid{
    grid-template-columns:1fr;
  }
  .feature-media{min-height:240px}
  .quick-grid,
  .reading-grid,
  .footer-grid{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }
  .latest-grid{
    grid-template-columns:1fr;
  }
  .post-card:nth-child(2n){
    border-right:1px solid var(--line);
  }
}
@media (max-width: 820px){
  .section-head,
  .cta-inner,
  .navbar{
    align-items:flex-start;
  }
  .nav-toggle{display:inline-flex}
  .nav-actions{gap:10px}
  .nav-links{
    position:absolute;
    left:0;
    right:0;
    top:calc(100% + 10px);
    display:none;
    flex-direction:column;
    align-items:stretch;
    padding:12px;
    border:1px solid var(--line);
    border-radius:20px;
    background:rgba(12,10,15,.96);
    box-shadow:var(--shadow-soft);
  }
  .nav-links.open{display:flex}
  .nav-links a{
    width:100%;
    padding:12px 14px;
    border-radius:14px;
  }
  .hero{
    padding-top:20px;
  }
  .hero-inner{
    padding:22px;
  }
  .hero-notes{
    grid-template-columns:1fr;
  }
  .quick-grid{
    grid-template-columns:1fr 1fr;
  }
  .reading-grid{
    grid-template-columns:1fr;
  }
  .cta-inner{
    flex-direction:column;
    align-items:flex-start;
  }
  .cta-actions{
    justify-content:flex-start;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
  }
}
@media (max-width: 560px){
  .container{
    width:min(calc(100% - 20px), var(--container));
  }
  .topbar .container{
    flex-direction:column;
    align-items:flex-start;
    gap:8px;
  }
  .topbar .chips{
    justify-content:flex-start;
  }
  .hero-panel,
  .cta-box{
    border-radius:22px;
  }
  .hero-inner{
    padding:18px;
    gap:18px;
  }
  .hero h1{
    font-size:clamp(28px, 9vw, 36px);
  }
  .hero p{
    font-size:15px;
  }
  .feature-content,
  .quick-card,
  .read-card,
  .faq-btn,
  .faq-panel,
  .cta-inner,
  .post-card,
  .footer-col{
    padding-left:16px;
    padding-right:16px;
  }
  .quick-grid,
  .footer-grid{
    grid-template-columns:1fr;
  }
  .mini-card{
    grid-template-columns:1fr;
  }
  .mini-card .img{
    min-height:180px;
  }
  .post-card{
    flex-direction:column;
  }
  .post-thumb{
    width:100%;
    min-width:0;
  }
  .section-title{
    font-size:22px;
  }
  .btn{
    width:100%;
  }
  .hero-actions .btn{
    width:auto;
    flex:1 1 160px;
  }
  .nav-cta{
    display:none;
  }
  .footer-meta{
    flex-direction:column;
    align-items:flex-start;
  }
}

/* roulang page: article */
:root{
    --bg:#0d0b10;
    --bg-2:#141018;
    --bg-3:#1a1520;
    --panel:rgba(18,14,20,.86);
    --panel-solid:#17131b;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.14);
    --text:#f3ece7;
    --text-2:#d4c8c1;
    --text-3:#a89995;
    --muted:#8f7f7a;
    --accent:#b23b65;
    --accent-2:#df9c3e;
    --accent-soft:rgba(178,59,101,.16);
    --accent-soft-2:rgba(223,156,62,.14);
    --shadow:0 24px 60px rgba(0,0,0,.36);
    --shadow-soft:0 14px 28px rgba(0,0,0,.22);
    --radius:18px;
    --radius-sm:14px;
    --container:1280px;
    --gap:24px;
    --gap-sm:14px;
    --header-h:76px;
    --transition:180ms ease;
  }
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
    color:var(--text);
    background:
      radial-gradient(1100px 650px at 15% -10%, rgba(178,59,101,.18), transparent 52%),
      radial-gradient(900px 540px at 92% 0%, rgba(223,156,62,.10), transparent 40%),
      linear-gradient(180deg, #0f0b11 0%, #0b0910 48%, #09070c 100%);
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    background-image:
      linear-gradient(rgba(255,255,255,.012) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.012) 1px, transparent 1px);
    background-size:72px 72px;
    mask-image:linear-gradient(180deg, rgba(0,0,0,.18), transparent 62%);
    opacity:.28;
    z-index:0;
  }
  *{box-sizing:border-box}
  a{
    color:inherit;
    text-decoration:none;
    transition:color var(--transition), border-color var(--transition), background var(--transition), transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  }
  a:hover{color:inherit}
  img{
    display:block;
    max-width:100%;
    height:auto;
  }
  button,input,textarea,select{
    font:inherit;
  }
  button{cursor:pointer}
  ::selection{
    background:rgba(178,59,101,.36);
    color:#fff;
  }
  .container{
    width:min(var(--container), calc(100% - 32px));
    margin:0 auto;
    position:relative;
    z-index:1;
  }
  .topbar{
    position:relative;
    z-index:8;
    background:rgba(8,6,10,.72);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(14px);
  }
  .topbar .container{
    min-height:44px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:8px 0;
    font-size:13px;
    color:var(--text-3);
  }
  .topbar strong{
    color:var(--text);
    font-weight:600;
  }
  .topbar .chips{
    display:flex;
    gap:8px;
    flex-wrap:wrap;
    justify-content:flex-end;
  }
  .chip{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:6px 10px;
    border:1px solid var(--line);
    border-radius:999px;
    background:rgba(255,255,255,.03);
    color:var(--text-2);
    font-size:12px;
    white-space:nowrap;
  }
  header.site-header{
    position:sticky;
    top:0;
    z-index:10;
    background:rgba(13,11,16,.82);
    backdrop-filter:blur(18px);
    border-bottom:1px solid rgba(255,255,255,.06);
  }
  .navbar{
    min-height:var(--header-h);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:12px;
    min-width:0;
  }
  .brand-mark{
    width:42px;
    height:42px;
    border-radius:14px;
    background:linear-gradient(145deg, rgba(178,59,101,.96), rgba(223,156,62,.62));
    box-shadow:0 12px 28px rgba(178,59,101,.24);
    display:grid;
    place-items:center;
    color:#fff;
    font-weight:800;
    letter-spacing:.5px;
    flex:0 0 auto;
  }
  .brand-text{min-width:0}
  .brand-text .name{
    font-weight:800;
    letter-spacing:.2px;
    font-size:16px;
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
  }
  .brand-text .sub{
    color:var(--text-3);
    font-size:12px;
    margin-top:2px;
  }
  .nav-actions{
    display:flex;
    align-items:center;
    gap:12px;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:8px;
  }
  .nav-links a{
    padding:10px 14px;
    border-radius:999px;
    color:var(--text-2);
    border:1px solid transparent;
  }
  .nav-links a:hover,
  .nav-links a:focus-visible{
    color:var(--text);
    border-color:var(--line-strong);
    background:rgba(255,255,255,.04);
    outline:none;
  }
  .nav-links a.active,
  .nav-links a[aria-current="page"]{
    color:#fff;
    background:linear-gradient(135deg, rgba(178,59,101,.22), rgba(223,156,62,.12));
    border-color:rgba(178,59,101,.32);
    box-shadow:0 10px 22px rgba(178,59,101,.12);
  }
  .nav-cta{
    padding:11px 16px;
    border-radius:999px;
    background:linear-gradient(135deg, var(--accent), #8d2749);
    color:#fff;
    font-weight:700;
    border:1px solid rgba(255,255,255,.05);
    box-shadow:0 14px 30px rgba(178,59,101,.18);
  }
  .nav-cta:hover,
  .nav-cta:focus-visible{
    transform:translateY(-1px);
    box-shadow:0 18px 36px rgba(178,59,101,.26);
    outline:none;
    color:#fff;
  }
  .nav-toggle{
    display:none;
    align-items:center;
    justify-content:center;
    width:44px;
    height:44px;
    border-radius:14px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.03);
    color:var(--text);
    line-height:1;
  }
  main{
    position:relative;
    z-index:1;
  }
  section{
    scroll-margin-top:calc(var(--header-h) + 20px);
  }
  .article-hero{
    padding:24px 0 8px;
  }
  .hero-panel{
    position:relative;
    overflow:hidden;
    border:1px solid var(--line);
    border-radius:26px;
    background:
      linear-gradient(135deg, rgba(12,9,15,.90), rgba(17,12,20,.78)),
      url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    box-shadow:var(--shadow);
  }
  .hero-panel::before{
    content:"";
    position:absolute;
    inset:0;
    background:
      radial-gradient(800px 420px at 18% 20%, rgba(178,59,101,.26), transparent 58%),
      linear-gradient(90deg, rgba(10,8,12,.78) 0%, rgba(10,8,12,.34) 52%, rgba(10,8,12,.70) 100%);
  }
  .hero-inner{
    position:relative;
    display:grid;
    grid-template-columns:1.05fr .95fr;
    gap:24px;
    align-items:stretch;
    padding:34px;
  }
  .hero-copy{
    min-width:0;
    display:flex;
    flex-direction:column;
    justify-content:center;
    gap:18px;
  }
  .badge-row{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
  }
  .badge{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:8px 12px;
    border-radius:999px;
    border:1px solid rgba(255,255,255,.10);
    background:rgba(255,255,255,.04);
    color:var(--text-2);
    font-size:13px;
  }
  .badge--accent{
    background:rgba(178,59,101,.16);
    border-color:rgba(178,59,101,.28);
    color:#ffdfe7;
  }
  .hero h1{
    margin:0;
    font-size:clamp(30px, 4vw, 44px);
    line-height:1.12;
    letter-spacing:-.4px;
    max-width:13em;
  }
  .hero p{
    margin:0;
    max-width:44em;
    color:var(--text-2);
    font-size:16px;
  }
  .hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    align-items:center;
  }
  .btn-solid,
  .btn-ghost{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:46px;
    padding:0 18px;
    border-radius:999px;
    font-weight:700;
    border:1px solid transparent;
    white-space:nowrap;
  }
  .btn-solid{
    background:linear-gradient(135deg, var(--accent), #8d2749);
    color:#fff;
    box-shadow:0 16px 28px rgba(178,59,101,.18);
  }
  .btn-solid:hover,
  .btn-solid:focus-visible{
    transform:translateY(-1px);
    box-shadow:0 20px 34px rgba(178,59,101,.24);
    color:#fff;
    outline:none;
  }
  .btn-ghost{
    color:var(--text);
    background:rgba(255,255,255,.04);
    border-color:var(--line);
  }
  .btn-ghost:hover,
  .btn-ghost:focus-visible{
    background:rgba(255,255,255,.06);
    border-color:var(--line-strong);
    transform:translateY(-1px);
    outline:none;
    color:var(--text);
  }
  .hero-side{
    display:flex;
    flex-direction:column;
    gap:16px;
    min-width:0;
  }
  .hero-cover{
    overflow:hidden;
    border-radius:24px;
    border:1px solid var(--line);
    background:var(--panel-solid);
    box-shadow:var(--shadow-soft);
  }
  .hero-cover .cover-media{
    position:relative;
    aspect-ratio:4/3;
    overflow:hidden;
  }
  .hero-cover .cover-media::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg, transparent 0%, rgba(7,5,8,.14) 48%, rgba(7,5,8,.82) 100%);
  }
  .hero-cover img{
    width:100%;
    height:100%;
    object-fit:cover;
  }
  .hero-cover .cover-copy{
    padding:16px 18px 18px;
  }
  .hero-cover h2{
    margin:0 0 8px;
    font-size:18px;
  }
  .hero-cover p{
    margin:0;
    color:var(--text-3);
    font-size:14px;
  }
  .quick-stats{
    display:grid;
    grid-template-columns:repeat(2, minmax(0, 1fr));
    gap:12px;
  }
  .stat-card{
    padding:16px;
    border-radius:18px;
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
  }
  .stat-card .num{
    font-size:22px;
    font-weight:800;
    letter-spacing:.2px;
    color:#fff;
    line-height:1.1;
  }
  .stat-card .label{
    margin-top:6px;
    font-size:13px;
    color:var(--text-3);
  }
  .article-meta-band{
    margin-top:18px;
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    align-items:center;
  }
  .meta-pill{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:8px 12px;
    border-radius:999px;
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
    color:var(--text-2);
    font-size:13px;
  }
  .meta-pill strong{
    color:#fff;
    font-weight:700;
  }
  .section{
    padding:24px 0;
  }
  .section-tight{
    padding-top:8px;
  }
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:16px;
    margin-bottom:16px;
  }
  .section-head h2{
    margin:0;
    font-size:clamp(22px, 2.4vw, 30px);
    letter-spacing:-.2px;
    line-height:1.2;
  }
  .section-head p{
    margin:0;
    color:var(--text-3);
    max-width:60ch;
    font-size:14px;
  }
  .surface{
    border:1px solid var(--line);
    border-radius:24px;
    background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
    box-shadow:var(--shadow-soft);
  }
  .article-layout{
    display:grid;
    grid-template-columns:minmax(0, 1.55fr) minmax(300px, .85fr);
    gap:var(--gap);
    align-items:start;
  }
  .article-card{
    padding:24px;
  }
  .breadcrumb-wrap{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:10px;
    margin-bottom:14px;
  }
  .crumbs{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    color:var(--text-3);
    font-size:13px;
    align-items:center;
  }
  .crumbs a{
    color:var(--text-2);
  }
  .crumbs a:hover,
  .crumbs a:focus-visible{
    color:#fff;
    outline:none;
  }
  .slash{
    color:rgba(255,255,255,.20);
  }
  .article-head h2{
    margin:0;
    font-size:clamp(26px, 3vw, 38px);
    line-height:1.18;
    letter-spacing:-.3px;
  }
  .article-head .summary{
    margin:14px 0 0;
    color:var(--text-2);
    font-size:16px;
    max-width:68ch;
  }
  .article-info{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-top:16px;
  }
  .info-chip{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:8px 12px;
    border-radius:999px;
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
    color:var(--text-2);
    font-size:13px;
  }
  .article-content-wrap{
    margin-top:20px;
    display:grid;
    grid-template-columns:minmax(0, 1fr);
    gap:20px;
  }
  .content-surface{
    padding:26px;
    border-radius:22px;
    background:rgba(14,11,17,.76);
    border:1px solid var(--line);
  }
  .article-content{
    max-width:76ch;
    color:var(--text-2);
    font-size:16px;
    line-height:1.95;
  }
  .article-content > *:first-child{margin-top:0}
  .article-content h1,
  .article-content h2,
  .article-content h3,
  .article-content h4{
    color:var(--text);
    line-height:1.3;
    margin:1.6em 0 .7em;
  }
  .article-content h2{
    font-size:24px;
    padding-left:14px;
    border-left:3px solid rgba(223,156,62,.75);
  }
  .article-content h3{
    font-size:20px;
  }
  .article-content p{
    margin:1em 0;
  }
  .article-content a{
    color:#ffd6e2;
    border-bottom:1px solid rgba(178,59,101,.36);
  }
  .article-content a:hover,
  .article-content a:focus-visible{
    color:#fff;
    border-bottom-color:rgba(223,156,62,.52);
    outline:none;
  }
  .article-content ul,
  .article-content ol{
    margin:1em 0;
    padding-left:1.2em;
  }
  .article-content li{
    margin:.5em 0;
  }
  .article-content blockquote{
    margin:1.3em 0;
    padding:16px 18px;
    border-radius:18px;
    border:1px solid rgba(178,59,101,.18);
    background:linear-gradient(180deg, rgba(178,59,101,.10), rgba(255,255,255,.03));
    color:var(--text);
  }
  .article-content hr{
    border:0;
    height:1px;
    background:var(--line);
    margin:1.5em 0;
  }
  .article-content img{
    margin:1.3em 0;
    border-radius:18px;
    border:1px solid var(--line);
    box-shadow:var(--shadow-soft);
  }
  .article-content table{
    width:100%;
    border-collapse:collapse;
    margin:1.2em 0;
    overflow:hidden;
    border-radius:16px;
  }
  .article-content th,
  .article-content td{
    border:1px solid var(--line);
    padding:12px 14px;
    text-align:left;
    vertical-align:top;
  }
  .article-content th{
    background:rgba(255,255,255,.04);
    color:var(--text);
  }
  .article-content code{
    padding:.16rem .42rem;
    border-radius:8px;
    background:rgba(255,255,255,.06);
    color:#ffe5ee;
  }
  .article-content pre{
    overflow:auto;
    padding:18px;
    border-radius:18px;
    background:#0b0910;
    border:1px solid var(--line);
  }
  .article-content pre code{
    padding:0;
    background:transparent;
  }
  .empty-state{
    padding:34px 20px;
    text-align:center;
    border:1px dashed rgba(255,255,255,.16);
    border-radius:18px;
    background:rgba(255,255,255,.03);
  }
  .empty-state h3{
    margin:0 0 10px;
    color:var(--text);
  }
  .empty-state p{
    margin:0 0 18px;
    color:var(--text-3);
  }
  .sidebar{
    display:flex;
    flex-direction:column;
    gap:16px;
  }
  .side-card{
    padding:20px;
    border-radius:22px;
    border:1px solid var(--line);
    background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.025));
    box-shadow:var(--shadow-soft);
  }
  .side-card h3{
    margin:0 0 12px;
    font-size:18px;
  }
  .side-note{
    color:var(--text-3);
    font-size:14px;
    margin:0;
  }
  .side-list{
    display:grid;
    gap:10px;
    margin-top:14px;
  }
  .side-link{
    display:flex;
    justify-content:space-between;
    gap:10px;
    padding:14px 15px;
    border-radius:16px;
    background:rgba(255,255,255,.03);
    border:1px solid var(--line);
  }
  .side-link:hover,
  .side-link:focus-visible{
    transform:translateY(-1px);
    background:rgba(255,255,255,.05);
    border-color:var(--line-strong);
    outline:none;
  }
  .side-link strong{
    display:block;
    color:var(--text);
    font-weight:700;
    margin-bottom:4px;
  }
  .side-link span{
    display:block;
    color:var(--text-3);
    font-size:13px;
    line-height:1.55;
  }
  .side-link em{
    color:#ffd6e2;
    font-style:normal;
    align-self:center;
    white-space:nowrap;
    font-size:13px;
  }
  .side-media{
    overflow:hidden;
    padding:0;
  }
  .side-media .media-wrap{
    position:relative;
    aspect-ratio:5/4;
    overflow:hidden;
    border-bottom:1px solid var(--line);
  }
  .side-media .media-wrap::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg, transparent 30%, rgba(0,0,0,.62) 100%);
  }
  .side-media img{
    width:100%;
    height:100%;
    object-fit:cover;
  }
  .side-media .caption{
    padding:16px 18px 18px;
  }
  .caption .mini{
    color:var(--text-3);
    font-size:13px;
    margin:0 0 6px;
  }
  .caption .big{
    margin:0;
    color:var(--text);
    font-weight:700;
    line-height:1.45;
  }
  .related-grid{
    display:grid;
    grid-template-columns:repeat(3, minmax(0, 1fr));
    gap:16px;
  }
  .article-card-mini{
    overflow:hidden;
    border-radius:20px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.03);
    box-shadow:var(--shadow-soft);
    display:flex;
    flex-direction:column;
    min-width:0;
  }
  .article-card-mini .thumb{
    position:relative;
    aspect-ratio:16/10;
    overflow:hidden;
  }
  .article-card-mini .thumb::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg, transparent 42%, rgba(5,4,7,.84) 100%);
  }
  .article-card-mini .thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
  }
  .article-card-mini .body{
    padding:15px 16px 16px;
  }
  .article-card-mini .tagline{
    display:inline-flex;
    padding:6px 10px;
    border-radius:999px;
    background:rgba(178,59,101,.14);
    border:1px solid rgba(178,59,101,.24);
    color:#ffdbe5;
    font-size:12px;
    margin-bottom:10px;
  }
  .article-card-mini h3{
    margin:0 0 8px;
    font-size:16px;
    line-height:1.35;
  }
  .article-card-mini p{
    margin:0;
    color:var(--text-3);
    font-size:13px;
    line-height:1.7;
  }
  .article-card-mini:hover,
  .article-card-mini:focus-within{
    transform:translateY(-2px);
    border-color:var(--line-strong);
    box-shadow:0 18px 34px rgba(0,0,0,.30);
  }
  .faq-grid{
    display:grid;
    gap:12px;
  }
  details.faq-item{
    border-radius:18px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.03);
    overflow:hidden;
    box-shadow:var(--shadow-soft);
  }
  details.faq-item[open]{
    border-color:rgba(178,59,101,.28);
    background:rgba(255,255,255,.045);
  }
  details.faq-item summary{
    list-style:none;
    cursor:pointer;
    padding:18px 20px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    color:var(--text);
    font-weight:700;
    outline:none;
  }
  details.faq-item summary::-webkit-details-marker{display:none}
  details.faq-item summary::after{
    content:"+";
    width:28px;
    height:28px;
    border-radius:999px;
    display:grid;
    place-items:center;
    background:rgba(255,255,255,.05);
    border:1px solid var(--line);
    color:var(--text);
    flex:0 0 auto;
  }
  details.faq-item[open] summary::after{
    content:"–";
    background:rgba(178,59,101,.14);
    border-color:rgba(178,59,101,.24);
  }
  .faq-item .faq-body{
    padding:0 20px 18px;
    color:var(--text-2);
    font-size:14px;
  }
  .cta-panel{
    padding:26px;
    border-radius:24px;
    border:1px solid rgba(178,59,101,.18);
    background:
      linear-gradient(135deg, rgba(178,59,101,.12), rgba(223,156,62,.06)),
      rgba(255,255,255,.03);
    box-shadow:var(--shadow-soft);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    flex-wrap:wrap;
  }
  .cta-panel h2{
    margin:0 0 8px;
    font-size:24px;
    line-height:1.2;
  }
  .cta-panel p{
    margin:0;
    color:var(--text-2);
    max-width:64ch;
  }
  .cta-actions{
    display:flex;
    gap:12px;
    flex-wrap:wrap;
  }
  .site-footer{
    margin-top:28px;
    padding:26px 0 20px;
    background:linear-gradient(180deg, rgba(9,7,12,.28), rgba(7,5,8,.72));
    border-top:1px solid rgba(255,255,255,.06);
    position:relative;
    z-index:1;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.25fr .85fr .85fr 1fr;
    gap:20px;
    padding:10px 0 22px;
  }
  .footer-col h3{
    margin:0 0 12px;
    font-size:16px;
    color:#fff;
  }
  .footer-col p{
    margin:0;
    color:var(--text-3);
    font-size:14px;
    line-height:1.75;
  }
  .footer-links{
    display:grid;
    gap:10px;
  }
  .footer-links a{
    color:var(--text-2);
    width:max-content;
  }
  .footer-links a:hover,
  .footer-links a:focus-visible{
    color:#fff;
    outline:none;
  }
  .footer-meta{
    padding-top:18px;
    border-top:1px solid var(--line);
    display:flex;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    color:var(--text-3);
    font-size:13px;
  }
  .footer-meta a{
    color:var(--text-2);
  }
  .footer-meta a:hover,
  .footer-meta a:focus-visible{
    color:#fff;
    outline:none;
  }
  .scroll-top{
    position:fixed;
    right:18px;
    bottom:18px;
    width:46px;
    height:46px;
    display:grid;
    place-items:center;
    border-radius:16px;
    background:rgba(17,12,20,.86);
    border:1px solid var(--line);
    color:#fff;
    box-shadow:var(--shadow-soft);
    z-index:12;
    opacity:0;
    visibility:hidden;
    transform:translateY(8px);
  }
  .scroll-top.is-visible{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }
  .scroll-top:hover,
  .scroll-top:focus-visible{
    background:rgba(178,59,101,.18);
    border-color:rgba(178,59,101,.32);
    outline:none;
    color:#fff;
  }
  .lead-line{
    width:72px;
    height:3px;
    border-radius:999px;
    background:linear-gradient(90deg, var(--accent), var(--accent-2));
  }
  .note-grid{
    display:grid;
    grid-template-columns:repeat(4, minmax(0, 1fr));
    gap:14px;
  }
  .note-card{
    padding:18px;
    border-radius:18px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.03);
  }
  .note-card .k{
    display:inline-flex;
    margin-bottom:10px;
    color:#ffdce7;
    background:rgba(178,59,101,.14);
    border:1px solid rgba(178,59,101,.22);
    border-radius:999px;
    padding:6px 10px;
    font-size:12px;
  }
  .note-card h3{
    margin:0 0 8px;
    font-size:16px;
  }
  .note-card p{
    margin:0;
    font-size:14px;
    color:var(--text-3);
  }
  .stack{
    display:grid;
    gap:16px;
  }
  .card-link{
    color:inherit;
  }
  .card-link:hover,
  .card-link:focus-visible{
    color:inherit;
    outline:none;
  }
  .btn-solid:focus-visible,
  .btn-ghost:focus-visible,
  .nav-links a:focus-visible,
  .nav-toggle:focus-visible,
  .footer-links a:focus-visible,
  .crumbs a:focus-visible,
  .side-link:focus-visible,
  .card-link:focus-visible{
    box-shadow:0 0 0 3px rgba(178,59,101,.22);
  }
  @media (max-width: 1199px){
    .hero-inner{grid-template-columns:1fr .9fr}
    .article-layout{grid-template-columns:1fr}
    .sidebar{grid-template-columns:repeat(2, minmax(0, 1fr)); display:grid}
    .related-grid{grid-template-columns:repeat(2, minmax(0, 1fr))}
    .footer-grid{grid-template-columns:1.1fr 1fr}
    .note-grid{grid-template-columns:repeat(2, minmax(0, 1fr))}
  }
  @media (max-width: 991px){
    .nav-links{
      position:absolute;
      top:calc(var(--header-h) - 6px);
      right:16px;
      left:16px;
      display:none;
      flex-direction:column;
      align-items:stretch;
      gap:6px;
      padding:12px;
      border-radius:18px;
      background:rgba(12,9,15,.96);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .nav-links.is-open{display:flex}
    .nav-links a{
      width:100%;
      justify-content:center;
      text-align:center;
    }
    .nav-toggle{display:inline-flex}
    .nav-cta{display:none}
    .hero-inner{
      grid-template-columns:1fr;
      padding:24px;
    }
    .hero h1{max-width:none}
    .quick-stats{grid-template-columns:repeat(4, minmax(0,1fr))}
    .sidebar{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:repeat(2, minmax(0, 1fr))}
  }
  @media (max-width: 767px){
    .container{width:min(var(--container), calc(100% - 24px))}
    .topbar .container{
      flex-direction:column;
      align-items:flex-start;
      gap:8px;
    }
    .hero-panel{border-radius:22px}
    .hero-inner{padding:20px}
    .hero h1{font-size:clamp(28px, 8vw, 36px)}
    .hero p{font-size:15px}
    .section-head{
      flex-direction:column;
      align-items:flex-start;
    }
    .article-card,
    .content-surface,
    .side-card,
    .cta-panel{padding:20px}
    .quick-stats{grid-template-columns:repeat(2, minmax(0,1fr))}
    .related-grid{grid-template-columns:1fr}
    .note-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .footer-meta{flex-direction:column}
    .cta-panel h2{font-size:22px}
  }
  @media (max-width: 520px){
    .brand-mark{width:38px;height:38px;border-radius:12px}
    .brand-text .name{font-size:15px}
    .brand-text .sub{font-size:11px}
    .hero-actions,
    .cta-actions{width:100%}
    .btn-solid,
    .btn-ghost{
      width:100%;
      min-height:44px;
    }
    .article-head h2{font-size:clamp(24px, 8vw, 32px)}
    .article-content{font-size:15px}
    .quick-stats{grid-template-columns:1fr}
    .stat-card .num{font-size:20px}
    .hero-cover .cover-copy{padding:14px 15px 16px}
    .scroll-top{right:14px; bottom:14px}
    details.faq-item summary{padding:16px}
    .faq-item .faq-body{padding:0 16px 16px}
  }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}