/* roulang page: index */
:root{
  --bg:#161a22;
  --bg-deep:#11141b;
  --bg-deeper:#0d1016;
  --card:#1e2530;
  --elev:#252d3a;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --text:#f1f4f8;
  --muted:#9aa6b5;
  --faint:#6d7786;
  --brand:#c2f51b;
  --brand-ink:#111509;
  --accent:#8b7cff;
  --shadow:0 16px 36px rgba(0,0,0,.35);
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:10px;
  --transition: .22s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg-deep);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
p,h1,h2,h3,h4{margin:0}
ul,ol{list-style:none;padding:0;margin:0}
::selection{background:var(--brand);color:var(--brand-ink)}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:5px}

.wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:88px 0;position:relative}
.section-soft{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:36px}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:1.5px;
  color:var(--brand);margin-bottom:12px;
}
.section-kicker::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:99px}
.section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.3;font-weight:700;letter-spacing:.5px}
.section-desc{color:var(--muted);font-size:16px;line-height:1.8;margin-top:14px}
.section-title-row{
  display:flex;justify-content:space-between;align-items:flex-end;gap:24px;
  margin-bottom:30px;flex-wrap:wrap;
}
.section-title-row h2{font-size:clamp(25px,2.6vw,34px);line-height:1.35;font-weight:700;letter-spacing:.4px}
.section-title-row .text-link{color:var(--brand);font-weight:600;white-space:nowrap}
.text-link{display:inline-flex;gap:6px;align-items:center;color:var(--brand);font-weight:600;transition:color var(--transition)}
.text-link:hover{color:#d8ff5e;gap:10px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:700;letter-spacing:.4px;
  transition:background var(--transition),color var(--transition),border-color var(--transition),transform var(--transition),box-shadow var(--transition);
  white-space:normal;text-align:center;border:1px solid transparent;
}
.btn-primary{background:var(--brand);color:var(--brand-ink);box-shadow:0 12px 28px rgba(194,245,27,.16)}
.btn-primary:hover{background:#d6ff52;transform:translateY(-1px);box-shadow:0 16px 34px rgba(194,245,27,.24)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:rgba(255,255,255,.22);color:var(--text);background:rgba(0,0,0,.12)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn-dark{background:var(--elev);color:var(--text);border-color:var(--line)}
.btn-dark:hover{background:#2d3644;border-color:rgba(255,255,255,.18)}

.brand-logo{display:inline-flex;align-items:center;gap:12px}
.brand-symbol{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;
  background:var(--brand);color:var(--brand-ink);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:900;letter-spacing:-.5px;
  box-shadow:0 8px 20px rgba(194,245,27,.16);
}
.brand-copy{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.brand-copy strong{font-size:var(--brand-size,19px);font-weight:800;letter-spacing:.4px;white-space:nowrap}
.brand-copy small{color:var(--muted);font-size:12px;letter-spacing:.8px;margin-top:2px}

.mobile-topbar{
  display:none;
  position:sticky;top:0;z-index:120;
  background:rgba(15,18,25,.97);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  min-height:64px;align-items:center;
}
.mobile-topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;max-width:1280px;padding:0 20px;margin:0 auto}
.mobile-topbar .brand-logo{--brand-size:16px}
.mobile-menu-btn{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;transition:border-color var(--transition);
}
.mobile-menu-btn:hover{border-color:var(--brand)}

.nav-scrim{
  position:fixed;inset:0;z-index:96;background:rgba(0,0,0,.64);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
body.nav-open .nav-scrim{opacity:1;visibility:visible}

.le-sidebar{
  position:fixed;left:0;top:0;bottom:0;z-index:150;
  width:272px;height:100vh;
  background:#12151c;
  border-right:1px solid var(--line);
  transition:transform .28s ease,box-shadow .28s ease;
}
.sidebar-pad{
  display:flex;flex-direction:column;height:100%;overflow-y:auto;
  padding:30px 18px 24px;
}
.sidebar .brand-logo{padding:0 6px}
.side-nav{display:flex;flex-direction:column;margin-top:40px;gap:6px}
.side-nav a{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  min-height:46px;padding:0 14px;border-radius:10px;font-size:15px;font-weight:600;
  color:rgba(241,244,248,.82);transition:background var(--transition),color var(--transition),padding-left var(--transition);
}
.side-nav a::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  border-radius:99px;background:var(--accent);opacity:0;transition:opacity var(--transition);
}
.side-nav a:hover{background:rgba(255,255,255,.06);color:#fff;padding-left:18px}
.side-nav a:hover::before,
.side-nav a.active::before{opacity:1}
.side-nav a.active{background:rgba(143,124,255,.08);color:var(--brand);padding-left:18px}
.side-nav a .arrow{color:var(--faint);font-size:13px;transition:transform var(--transition)}
.side-nav a:hover .arrow{transform:translateX(2px);color:var(--brand)}
.side-current{
  margin-top:auto;padding:18px 12px 0;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:6px;margin-bottom:22px;
}
.side-current .mini-label{color:var(--faint);font-size:12px;letter-spacing:1px;font-weight:600}
.side-current strong{color:var(--muted);font-size:13px;font-weight:500;line-height:1.5}
.sidebar-foot{padding:0 10px;color:#515b68;font-size:12px;line-height:1.8}
.sidebar-foot .domain{color:#647080}

.main-area{margin-left:272px;min-height:100vh;display:flex;flex-direction:column}
main{flex:1 0 auto}
.site-footer{flex-shrink:0}

.hero{
  position:relative;overflow:hidden;min-height:76vh;
  display:flex;align-items:center;padding:86px 0 80px;
  border-bottom:1px solid var(--line);
}
.hero-back{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.24;
}
.hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(100deg,rgba(16,19,26,.94) 0%,rgba(16,19,26,.88) 40%,rgba(16,21,29,.76) 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;pointer-events:none;
}
.hero .wrap{position:relative;z-index:2;width:100%}
.hero-inner{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:70px;align-items:center}
.hero-copy{max-width:680px}
.hero-copy h1{font-size:clamp(34px,5vw,56px);line-height:1.22;letter-spacing:.5px;font-weight:800;text-wrap:balance}
.hero-copy h1 .hl{color:var(--brand)}
.hero-desc{
  color:#c4ccd8;font-size:17px;line-height:1.85;margin-top:22px;
  max-width:620px;text-wrap:pretty;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;margin-bottom:20px;
  padding:7px 14px;border:1px solid rgba(194,245,27,.26);background:rgba(194,245,27,.08);
  border-radius:999px;color:var(--brand);font-size:13px;font-weight:700;letter-spacing:1px;
}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(194,245,27,.15)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04);
  color:#d5dbe5;font-size:12px;font-weight:600;letter-spacing:.2px;
}
.tag-brand{border-color:rgba(194,245,27,.4);color:var(--brand);background:rgba(194,245,27,.07)}
.tag-accent{border-color:rgba(139,124,255,.36);color:#c5bcff;background:rgba(139,124,255,.08)}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:34px}
.hero-actions .btn{min-width:150px}

.hero-media{position:relative}
.hero-media::before{
  content:"";position:absolute;inset:-16px -14px auto auto;width:120px;height:120px;
  border-radius:16px;background:var(--accent);opacity:.22;transform:rotate(12deg);
  z-index:-1;
}
.hero-media::after{
  content:"";position:absolute;inset:auto auto -18px -16px;width:150px;height:150px;
  border-radius:16px;background:var(--brand);opacity:.14;transform:rotate(-8deg);z-index:3;
}
.hero-shot{
  position:relative;z-index:4;border-radius:20px;overflow:hidden;box-shadow:0 36px 80px rgba(0,0,0,.5);
  border:1px solid rgba(255,255,255,.14);aspect-ratio:4/4.6;
}
.hero-shot img{width:100%;height:100%;object-fit:cover}
.hero-shot-caption{
  position:absolute;left:10px;right:10px;bottom:10px;z-index:5;
  background:rgba(13,16,21,.82);border:1px solid var(--line);
  padding:10px 12px;border-radius:12px;font-size:13px;color:#e4e9f0;
}
.hero-shot-caption span{color:var(--brand);font-weight:700}
.hero-note{
  display:flex;flex-wrap:wrap;gap:22px;margin-top:34px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
}
.hero-note li{font-size:14px;color:var(--muted);display:flex;align-items:center;gap:8px}
.hero-note b{color:#dde3eb;font-weight:700}

.directory-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;
}
.dir-card{
  position:relative;display:flex;flex-direction:column;min-height:250px;
  background:var(--card);border:1px solid transparent;
  border-radius:var(--radius-lg);padding:28px;
  transition:background var(--transition),border-color var(--transition),box-shadow var(--transition),transform var(--transition);
  overflow:hidden;
}
.dir-card::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--accent);opacity:0;transition:opacity var(--transition);
}
.dir-card:hover{
  transform:translateY(-4px);background:var(--elev);
  border-color:rgba(194,245,27,.26);
  box-shadow:var(--shadow);
}
.dir-card:hover::after{opacity:1}
.dir-top{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}
.dir-no{
  font-size:42px;line-height:1;font-weight:900;letter-spacing:-2px;
  color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.24);
  display:block;
}
.dir-icon{
  width:48px;height:48px;border-radius:14px;flex:0 0 48px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);border:1px solid rgba(194,245,27,.32);
  background:rgba(194,245,27,.08);font-weight:800;font-size:18px;
}
.dir-card h3{font-size:20px;font-weight:700;margin-top:18px;letter-spacing:.3px}
.dir-card .dir-text{color:var(--muted);font-size:15px;line-height:1.8;margin-top:10px}
.dir-entry-link{
  margin-top:auto;padding-top:24px;color:var(--brand);font-weight:700;
  display:inline-flex;align-items:center;gap:8px;font-size:15px;
}
.dir-entry-link .arrow{transition:transform var(--transition)}
.dir-card:hover .dir-entry-link .arrow{transform:translateX(4px)}
.dir-entry-link:hover{letter-spacing:.5px}

.feed-section{background:var(--bg)}
.feed-area{display:grid;gap:16px}
.feed-card{
  display:flex;gap:0;align-items:stretch;
  background:var(--card);border:1px solid transparent;border-radius:var(--radius-lg);
  overflow:hidden;transition:box-shadow var(--transition),background var(--transition),border-color var(--transition),transform var(--transition);
}
.feed-card:hover{background:var(--elev);border-color:rgba(194,245,27,.2);transform:translateY(-2px);box-shadow:var(--shadow)}
.feed-thumb{width:176px;flex:0 0 176px;min-height:150px;overflow:hidden;background:var(--bg-deep)}
.feed-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.feed-card:hover .feed-thumb img{transform:scale(1.05)}
.feed-body{flex:1;padding:18px 22px;display:flex;flex-direction:column;min-width:0}
.feed-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.feed-time{color:var(--faint);font-size:13px}
.feed-body h3{
  font-size:18px;line-height:1.45;letter-spacing:.2px;margin:12px 0 8px;font-weight:700;
}
.feed-body h3 a{display:inline-block;transition:color var(--transition)}
.feed-body h3 a:hover{color:var(--brand)}
.feed-excerpt{
  color:var(--muted);font-size:14px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.feed-go{
  margin-top:auto;padding-top:14px;color:var(--muted);font-size:13px;
  display:inline-flex;gap:6px;align-items:center;
}
.feed-card:hover .feed-go{color:var(--brand)}
.info-empty{
  background:var(--card);border:1px dashed rgba(255,255,255,.15);
  border-radius:var(--radius-lg);min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:50px;text-align:center;
}
.empty-badge{
  width:52px;height:52px;border-radius:50%;border:1px solid var(--line);
  background:var(--elev);display:inline-flex;align-items:center;justify-content:center;
  color:var(--faint);font-size:26px;font-weight:200;
}
.info-empty p{font-size:16px;font-weight:600;color:#d7dde7}
.info-empty .empty-sub{color:var(--faint);font-size:14px;font-weight:400}

.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.rel-card{
  display:flex;background:var(--card);border:1px solid transparent;border-radius:18px;
  overflow:hidden;transition:background var(--transition),border-color var(--transition),box-shadow var(--transition),transform var(--transition);
}
.rel-card:hover{transform:translateY(-4px);background:var(--elev);border-color:rgba(139,124,255,.28);box-shadow:var(--shadow)}
.rel-thumb{width:180px;flex:0 0 180px;overflow:hidden;background:var(--bg-deep)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.05)}
.rel-content{padding:18px 20px 14px;display:flex;flex-direction:column;min-width:0}
.rel-content .tag{margin-bottom:10px}
.rel-content h3{font-size:17px;line-height:1.5;font-weight:700;letter-spacing:.2px}
.rel-content p{color:var(--muted);font-size:14px;line-height:1.7;margin-top:8px}
.rel-go{color:var(--brand);font-size:13px;margin-top:14px;font-weight:600;display:flex;align-items:center;gap:6px}
.rel-go .arrow{transition:transform var(--transition)}
.rel-card:hover .rel-go .arrow{transform:translateX(4px)}

.path-section{background:var(--bg-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.path-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.path-card{
  background:var(--card);padding:26px 24px;border-radius:var(--radius-lg);
  position:relative;border-top:3px solid var(--line);transition:border-color var(--transition),background var(--transition),transform var(--transition);
}
.path-card:hover{background:var(--elev);border-top-color:var(--brand);transform:translateY(-2px)}
.path-idx{position:absolute;top:20px;right:22px;font-size:34px;font-weight:900;color:rgba(255,255,255,.045)}
.path-card h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:12px}
.path-card p{color:var(--muted);font-size:14px;line-height:1.8}

.faq-section{background:var(--bg)}
.faq-list{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:0 28px;margin:0;overflow:hidden;
}
.faq-list .accordion-item{
  border:0;background:transparent;
  border-bottom:1px solid var(--line);padding:0;margin:0;
}
.faq-list .accordion-item:last-child{border-bottom:0}
.faq-list .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;color:var(--text);border:0;
  padding:22px 4px;font-size:16px;font-weight:600;line-height:1.5;
  transition:color var(--transition);
}
.faq-list .accordion-title:hover{background:transparent;color:var(--brand)}
.faq-list .faq-arrow{
  width:30px;height:30px;flex:0 0 30px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--muted);font-weight:200;
  transition:border-color var(--transition),color var(--transition),transform .3s ease;
}
.faq-list .accordion-item.is-active .accordion-title{color:var(--brand)}
.faq-list .accordion-item.is-active .faq-arrow{transform:rotate(45deg);border-color:var(--brand);color:var(--brand)}
.faq-list .accordion-content{
  padding:0 4px 22px;background:transparent;border-top:0;color:var(--muted);font-size:15px;
  border-bottom:0;
}
.faq-list .accordion-content p{line-height:1.85;color:var(--muted);max-width:860px}
.faq-list .accordion-content a{color:var(--brand);font-weight:600;border-bottom:1px solid rgba(194,245,27,.3)}
.faq-list .accordion-content a:hover{border-color:var(--brand)}

.save-section{padding:80px 0}
.save-card{
  position:relative;background:var(--card);
  border:1px solid rgba(194,245,27,.25);border-radius:var(--radius-lg);
  padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  overflow:hidden;
}
.save-card::before{
  content:"";position:absolute;right:-80px;top:-80px;width:240px;height:240px;border-radius:50%;
  background:rgba(139,124,255,.12);filter:blur(8px);
}
.save-copy{
  position:relative;z-index:2;max-width:600px;display:flex;gap:20px;
}
.save-ico{
  width:54px;height:54px;flex:0 0 54px;border-radius:16px;background:rgba(194,245,27,.12);
  border:1px solid rgba(194,245,27,.3);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:23px;
}
.save-copy h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:800}
.save-copy p{color:var(--muted);margin-top:8px;font-size:15px;line-height:1.8}
.save-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

.site-footer{
  border-top:1px solid var(--line);background:var(--bg-deeper);padding-top:56px;
}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr);gap:44px;padding-bottom:46px}
.footer-brand-logo{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand-logo .brand-symbol{width:42px;height:42px;flex:0 0 42px;font-size:14px}
.footer-brand-text strong{display:block;font-size:18px;letter-spacing:.4px}
.footer-brand-text small{color:var(--faint);font-size:13px}
.footer-brand-copy{color:var(--muted);font-size:14px;line-height:1.9;max-width:360px}
.footer-title{font-size:16px;color:#fff;font-weight:700;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{color:var(--muted);font-size:14px;transition:color var(--transition),padding-left var(--transition)}
.footer-links a:hover{color:var(--brand);padding-left:4px}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 24px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
}
.footer-bottom p{color:#59636f;font-size:12px}
.footer-bottom .legal{color:#4d5764}
.footer-bottom a{color:#5d6976}

@media (max-width:1300px){
  .hero-inner{grid-template-columns:minmax(0,1fr) 320px;gap:48px}
}
@media (max-width:1023px){
  .mobile-topbar{display:flex}
  .le-sidebar{
    width:286px;transform:translateX(-110%);
    box-shadow:none;
  }
  body.nav-open .le-sidebar{transform:translateX(0);box-shadow:0 0 0 100vmax rgba(0,0,0,.45)}
  .main-area{margin-left:0}
  .hero-inner{grid-template-columns:minmax(0,1fr);gap:40px}
  .hero-actions .btn{min-width:140px}
  .hero-media{display:none}
  .directory-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .path-grid{grid-template-columns:1fr 1fr}
  .save-card{padding:36px 30px}
  .save-actions{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:34px}
}
@media (max-width:767px){
  .section{padding:64px 0}
  .hero{padding:58px 0 54px;min-height:auto}
  .hero-copy h1{font-size:clamp(30px,7vw,42px)}
  .hero-desc{font-size:15px;margin-top:16px}
  .hero-tags{flex-wrap:wrap}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%}
  .wrap{padding:0 20px}
  .footer-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .rel-card{flex-direction:column}
  .rel-thumb{width:100%;min-height:200px}
  .path-grid{grid-template-columns:1fr}
  .feed-card{flex-direction:column}
  .feed-thumb{width:100%;min-height:190px}
  .feed-time{font-size:12px}
  .feed-body h3{font-size:17px}
  .save-card{padding:28px 20px}
  .save-copy{flex-direction:column}
  .save-actions .btn{width:100%}
  .footer-bottom{flex-direction:column}
  .mobile-topbar{min-height:58px}
}
@media (max-width:520px){
  .brand-copy small{display:none}
  .mobile-topbar .brand-logo{--brand-size:15px}
  .hero-copy h1{font-size:28px}
  .hero-actions .btn{font-size:14px}
  .dir-card{padding:22px 18px;min-height:auto}
  .section-title-row{flex-direction:column;align-items:flex-start}
  .section-title-row .section-idx{opacity:.4}
}

/* roulang page: article */
:root {
  --bg: #161A22;
  --bg-deep: #12151B;
  --card-bg: #1E2530;
  --card-hover: #252D3A;
  --border: rgba(255, 255, 255, 0.09);
  --text: #F1F4F8;
  --text-2: #9AA6B5;
  --brand: #C2F51B;
  --accent: #8B7CFF;
  --radius-lg: 18px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
  --tr: all 0.2s ease;
}
* , *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  letter-spacing: 0.3px;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style-position: inside; }
button { font-family: inherit; }

.site-shell {
  display: flex;
  min-height: 100vh;
}

.le-sidebar {
  width: 272px;
  flex: 0 0 272px;
  background: var(--bg-deep);
  border-right: 1px solid var(--border);
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  z-index: 50;
  overflow-y: auto;
}
.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.main-content {
  flex: 1;
  margin-left: 272px;
  width: calc(100% - 272px);
  position: relative;
}

.wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}
.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 28px 20px 24px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 22px;
}
.brand-symbol {
  width: 40px;
  height: 40px;
  background: var(--brand);
  color: #0B0E13;
  font-weight: 900;
  font-size: 13px;
  letter-spacing: -1px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}
.brand-copy {
  display: flex;
  flex-direction: column;
}
.brand-copy strong {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}
.brand-copy small {
  font-size: 12px;
  color: var(--brand);
  margin-top: 1px;
  letter-spacing: 1px;
}
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 15px;
  font-weight: 500;
  transition: var(--tr);
  border-left: 3px solid transparent;
  position: relative;
}
.nav-item i {
  width: 18px;
  text-align: center;
  font-size: 15px;
  opacity: 0.8;
  transition: var(--tr);
}
.nav-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  padding-left: 18px;
}
.nav-item:hover i { color: var(--brand); }
.nav-item.active {
  background: rgba(139, 124, 255, 0.08);
  border-left-color: var(--accent);
  color: var(--brand);
  font-weight: 600;
}
.nav-item.active i { color: var(--brand); }
.sidebar-location {
  margin-top: 28px;
  padding: 16px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.loc-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: var(--text-2);
  margin-bottom: 6px;
}
.loc-value {
  font-size: 13px;
  color: var(--text);
  line-height: 1.5;
}
.loc-value span { color: var(--brand); }
.sidebar-footer {
  margin-top: auto;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: rgba(154, 166, 181, 0.7);
}
.sidebar-footer p + p { margin-top: 4px; }
.mobile-topbar {
  display: none;
}

.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
}
.mobile-menu-btn svg {
  display: block;
}
.mobile-menu-btn:focus-visible, .button:focus-visible, a:focus-visible, button:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}
body.nav-open-custom::after {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 90;
  display: block;
}

html.no-scroll {
  overflow-y: auto;
}

.mobile-drawer-closed {
  display: flex !important;
}

@media (min-width: 1025px) {
  .mobile-menu-btn { display: none !important; }
}

body:not(.le-sidebar-open) .le-sidebar {
  transform: translateX(0);
}

@media (max-width: 1024px) {
  .le-sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
  }
  body.le-sidebar-open .le-sidebar {
    transform: translateX(0);
    box-shadow: 6px 0 30px rgba(0, 0, 0, 0.5);
  }
  body.le-sidebar-open::after {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 49;
  }
  .main-content {
    margin-left: 0;
    width: 100%;
  }
  .mobile-topbar {
    display: flex;
    position: sticky;
    top: 0;
    z-index: 60;
    background: var(--bg-deep);
    border-bottom: 1px solid var(--border);
    padding: 0 16px;
    min-height: 58px;
    align-items: center;
  }
  .mobile-topbar-inner {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .mobile-topbar .brand-logo {
    border-bottom: none;
    margin-bottom: 0;
    padding: 0;
  }
  .mobile-topbar .brand-copy strong {
    font-size: 14px;
  }
  .mobile-topbar .brand-copy small {
    font-size: 11px;
  }
  .mobile-topbar .brand-symbol {
    width: 32px;
    height: 32px;
    font-size: 11px;
  }
}

@media (max-width: 640px) {
  .mobile-topbar { padding: 0 12px; }
  .mobile-topbar .brand-symbol {
    width: 30px;
    height: 30px;
    font-size: 10px;
  }
  .mobile-topbar .brand-copy strong {
    font-size: 13px;
    letter-spacing: 0.2px;
  }
  .mobile-topbar .brand-copy small {
    font-size: 10px;
  }
}


/* Article-specific styling */
.article-page .main-content {
  background: var(--bg);
}
.article-hero {
  position: relative;
  overflow: hidden;
  padding: 36px 0 8px;
}
.crumb-row {
  font-size: 13px;
  color: var(--text-2);
  max-width: 920px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.crumb-row a {
  transition: var(--tr);
  color: var(--text-2);
}
.crumb-row a:hover { color: var(--brand); }
.crumb-row .sep { opacity: 0.5; }
.crumb-row .current { color: var(--text); }

.article-header-block {
  max-width: 920px;
  margin: 0 auto;
  padding: 28px 24px 0;
}
.article-header-block h1 {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.5px;
  color: var(--text);
  margin-bottom: 16px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 22px;
  font-size: 13px;
  color: var(--text-2);
  border-top: 1px solid var(--border);
  padding-top: 16px;
}
.article-meta .tag {
  background: rgba(139, 124, 255, 0.12);
  border: 1px solid rgba(139, 124, 255, 0.35);
  color: #b6aaff;
  padding: 2px 12px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.3px;
  font-weight: 500;
}
.article-meta i {
  margin-right: 6px;
  opacity: 0.7;
}
.article-hero-cover {
  max-width: 920px;
  margin: 24px auto 0;
  padding: 0 24px;
}
.article-hero-cover .hero-figure {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 400px;
  background-image: url('/assets/images/coverpic/cover-3.webp');
  background-size: cover;
  background-position: center;
  position: relative;
}
.hero-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(22,26,34,0) 25%, rgba(22,26,34,0.55) 100%);
}
.article-wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 32px 24px;
}
.article-prose {
  max-width: 760px;
  margin: 0 auto;
  background: var(--bg);
  font-size: 16px;
  line-height: 1.85;
  color: #D9E1EA;
}
.article-prose p {
  margin-bottom: 1.5em;
}
.article-prose h2 {
  font-size: 24px;
  margin: 2em 0 0.8em;
  color: var(--text);
  font-weight: 700;
}
.article-prose h3 {
  font-size: 20px;
  margin: 1.8em 0 0.6em;
  color: var(--text);
  font-weight: 600;
}
.article-prose ul, .article-prose ol {
  margin-bottom: 1.5em;
  padding-left: 0.5rem;
}
.article-prose li {
  margin-bottom: 0.4em;
}
.article-prose blockquote {
  border-left: 3px solid var(--brand);
  background: rgba(194, 245, 27, 0.04);
  padding: 1rem 1.4rem;
  margin: 1.5em 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-2);
  font-style: normal;
}
.article-prose blockquote p:last-child { margin-bottom: 0; }
.article-prose img {
  border-radius: var(--radius-lg);
  margin: 2rem auto;
}
.article-prose a {
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.article-prose a:hover { text-decoration: none; }
.article-prose code {
  background: var(--card-bg);
  padding: 2px 10px;
  border-radius: 6px;
  font-size: 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  box-shadow: inset 0 0 0 1px var(--border);
}

/* empty state */
.empty-box {
  text-align: center;
  padding: 70px 24px;
}
.empty-box .empty-icon {
  font-size: 46px;
  color: var(--accent);
  opacity: 0.6;
  margin-bottom: 20px;
}
.empty-box h2 {
  font-size: 24px;
  margin-bottom: 10px;
  color: var(--text);
  font-weight: 600;
}
.empty-box p {
  color: var(--text-2);
  font-size: 15px;
  margin-bottom: 24px;
}
.empty-box .button {
  margin-right: 10px;
}

.article-bottom-nav {
  border-top: 1px solid var(--border);
  margin-top: 38px;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}
.article-bottom-nav a {
  color: var(--text-2);
  transition: var(--tr);
}
.article-bottom-nav a:hover { color: var(--brand); }
.article-related {
  border-top: 1px solid var(--border);
  margin-top: 30px;
  padding-top: 24px;
}
.article-related-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
}
.article-related-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.article-related-links a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-2);
  font-size: 14px;
  transition: var(--tr);
}
.article-related-links a::before {
  content: "→";
  color: var(--accent);
  font-weight: 700;
  transition: var(--tr);
}
.article-related-links a:hover { color: var(--brand); }
.article-related-links a:hover::before { transform: translateX(4px); color: var(--brand); }

.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 52px 0 22px;
  margin-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px 28px;
}
.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.footer-brand-logo .brand-symbol {
  width: 34px;
  height: 34px;
  font-size: 12px;
}
.footer-brand-text {
  display: flex;
  flex-direction: column;
}
.footer-brand-text strong {
  font-size: 16px;
  font-weight: 700;
}
.footer-brand-text small {
  font-size: 11px;
  color: var(--text-2);
}
.footer-brand-copy {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.8;
  max-width: 320px;
}
.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-links a {
  color: var(--text-2);
  font-size: 14px;
  transition: var(--tr);
}
.footer-links a:hover {
  color: var(--brand);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  margin-top: 42px;
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: rgba(154,166,181,0.6);
}
.footer-bottom .legal {
  color: rgba(154,166,181,0.5);
}

@media (max-width: 1240px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    row-gap: 28px;
  }
  .footer-grid > div:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid > div:first-child {
    grid-column: 1;
  }
}

/* Button custom */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: var(--tr);
  cursor: pointer;
  min-height: 44px;
  letter-spacing: 0.3px;
}
.button.primary {
  background: var(--brand);
  color: #0B0E13;
}
.button.primary:hover {
  background: #D6FA3C;
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(194,245,27,0.16);
  color: #0B0E13;
}
.button.secondary {
  background: transparent;
  color: var(--text);
  border-color: rgba(255,255,255,0.3);
}
.button.secondary:hover {
  border-color: var(--brand);
  color: var(--brand);
  transform: translateY(-1px);
}
.button i {
  font-size: 14px;
}

/* FAQ placeholders */
.faq-placeholder-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  margin-bottom: 8px;
}
.faq-placeholder-card h4 {
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
}

/* Resource section */
.recommend-section {
  max-width: 920px;
  margin: 0 auto 10px;
  padding: 8px 24px 0;
}
.recommend-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.res-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--tr);
  display: flex;
  flex-direction: column;  
}
.res-card:hover {
  transform: translateY(-4px);
  border-color: rgba(194, 245, 27, 0.25);
  box-shadow: var(--shadow);
}
.res-card-cover {
  height: 120px;
  background-size: cover;
  background-position: center;
  margin: 0;
  border-radius: 0;
}
.res-card-body {
  padding: 14px 14px 16px;
}
.res-card-body h4 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 8px;
  transition: var(--tr);
}
.res-card:hover .res-card-body h4 { color: var(--brand); }
.res-card-body .res-meta{
  color: var(--text-2);
  font-size: 12px;
  margin-top: 3px;
}
@media (max-width: 1000px) {
  .recommend-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 560px) {
  .recommend-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* In-text small */
.article-kicker {
  display: inline-block;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.small-note{
  font-size: 13px;
  color: var(--text-2);
}
body { background: var(--bg); }
::selection { background: var(--brand); color: #0B0E13; }
@media print {
  .le-sidebar, .mobile-topbar, .site-footer { display: none; }
  .main-content { margin-left: 0; width: 100%; }
}

/* roulang page: category2 */
/* ========== design tokens ========== */
:root{
  --bg:#161A22;
  --sidebar-bg:#12151B;
  --panel:#1E2530;
  --panel-2:#252D3A;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --text:#F1F4F8;
  --muted:#9AA6B5;
  --brand:#C2F51B;
  --brand-dark:#9CC40D;
  --violet:#8B7CFF;
  --danger:#FF7A90;
  --radius-xl:18px;
  --radius-md:10px;
  --radius-tag:999px;
  --shadow-lg:0 16px 36px rgba(0,0,0,.35);
  --space-section:96px;
  --font-cn:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Segoe UI",sans-serif;
}
/* ========== reset / base ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:var(--font-cn);
  line-height:1.75;
  background:#141820;
  color:var(--text);
  -webkit-font-smoothing:antialiased;
}
body.nav-lock{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease}
button{font-family:inherit;cursor:pointer}
ul,ol{list-style:none}
.container{max-width:1240px;margin:0 auto;padding:0 24px}
.wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:calc(var(--space-section) - 12px) 0}
.skip-link{
  position:absolute;left:-999px;top:12px;z-index:2000;background:var(--brand);color:#000;
  padding:10px 18px;border-radius:var(--radius-md);
}
.skip-link:focus{left:12px}
::selection{background:rgba(194,245,27,.25)}
:focus-visible{outline:2px solid var(--violet);outline-offset:3px;border-radius:4px}

/* ========== foundation reset overrides ========== */
.button,button,.menu,.menu-item,.accordion-title,.site-footer a,
.mobile-menu-btn,.topbar,.dropdown-pane{font-family:var(--font-cn)!important}
.button{
  border-radius:var(--radius-md);
  font-weight:600;
  letter-spacing:.3px;
  box-shadow:none;
  transition:all .2s ease;
}
.button:hover{transform:none}
.grid-x{margin-left:-12px;margin-right:-12px}
.grid-x > .cell{padding-left:12px;padding-right:12px}

/* ========== mobile topbar ========== */
.mobile-topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;z-index:1100;
  background:var(--sidebar-bg);
  border-bottom:1px solid var(--line);
  box-shadow:0 8px 24px rgba(0,0,0,.3);
}
.mobile-topbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 20px;
}
.brand-logo{display:inline-flex;align-items:center;gap:10px;min-width:0}
.brand-symbol{
  flex:0 0 auto;
  width:38px;height:38px;
  border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);color:#000;
  font-size:13px;font-weight:800;letter-spacing:.8px;
}
.brand-copy{
  display:flex;flex-direction:column;line-height:1.25;
  overflow:hidden;
}
.brand-copy strong{font-size:15px;color:var(--text);font-weight:700;white-space:nowrap}
.brand-copy small{font-size:11px;color:var(--muted);letter-spacing:.5px}
.mobile-menu-btn{
  width:42px;height:42px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--text);
  display:flex;align-items:center;justify-content:center;
  transition:border-color .2s ease,background .2s ease;
}
.mobile-menu-btn:hover,.mobile-menu-btn:focus{
  border-color:var(--brand);
  background:rgba(255,255,255,.07);
}

/* ========== sidebar layout ========== */
.layout-wrapper{display:block}
.le-sidebar{
  position:fixed;
  top:0;left:0;bottom:0;width:272px;
  background:var(--sidebar-bg);
  border-right:1px solid var(--line);
  padding:30px 18px 22px;
  display:flex;flex-direction:column;justify-content:space-between;
  z-index:1200;
  overflow-y:auto;
  transition:transform .3s ease;
}
.top-group .brand-logo{padding:2px 8px 20px}
.top-group .brand-symbol{width:42px;height:42px;font-size:14px}
.side-nav{margin-top:38px;display:flex;flex-direction:column;gap:6px}
.side-nav a{
  position:relative;
  display:flex;align-items:center;
  height:46px;
  padding:0 14px;
  color:rgba(241,244,248,.78);
  font-size:15px;font-weight:500;
  border-radius:10px;
  border-left:3px solid transparent;
  transition:all .2s ease;
}
.side-nav a::after{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:transparent;
  margin-left:auto;
}
.side-nav a:hover{
  background:rgba(255,255,255,.06);
  color:var(--text);
  transform:translateX(2px);
}
.side-nav a.active{
  background:rgba(139,124,255,.1);
  color:var(--brand);
  border-left-color:var(--violet);
}
.side-nav a.active::after{background:var(--brand)}
.current-pos{
  margin-top:28px;
  padding:14px 12px 4px;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--muted);
}
.current-pos span{display:block;color:var(--text);font-weight:600;margin-top:2px;font-size:13px}
.side-foot{
  border-top:1px solid var(--line);
  padding-top:18px;
  font-size:12px;
  color:rgba(154,166,181,.7);
  line-height:1.6;
}
.side-foot .foot-note{display:block;opacity:.65;font-size:11px;margin-top:4px}

/* right content wrapper */
.right-content{
  margin-left:272px;
  min-height:100vh;
  display:flex;flex-direction:column;
  background:
    radial-gradient(rgba(255,255,255,.018) 1px,transparent 1px) 0 0/26px 26px,
    linear-gradient(180deg,#171A22 0%,#131720 100%);
  background-attachment:fixed;
}
main{flex:1}

/* ========== shared buttons ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--radius-md);
  border:1px solid transparent;
  font-size:15px;font-weight:700;
  letter-spacing:.3px;
  line-height:1;
  transition:all .2s ease;
  background:none;
  color:var(--text);
}
.btn i{font-size:13px}
.btn-primary{
  background:var(--brand);
  color:#0B0E05;
  box-shadow:0 6px 18px rgba(194,245,27,.14);
}
.btn-primary:hover{
  background:#D0FB32;
  transform:translateY(-2px);
  color:#0B0E05;
  box-shadow:0 10px 24px rgba(194,245,27,.2);
}
.btn-ghost{
  border-color:rgba(255,255,255,.3);
  color:var(--text);
  background:transparent;
}
.btn-ghost:hover{
  border-color:var(--brand);
  color:var(--brand);
  transform:translateY(-2px);
}
.btn-violet{
  border-color:var(--violet);
  color:var(--violet);
  background:rgba(139,124,255,.08);
}
.btn-violet:hover{
  background:rgba(139,124,255,.16);
  border-color:var(--violet);
  color:#E6E2FF;
  transform:translateY(-2px);
}

/* ========== category banner ========== */
.category-banner{
  position:relative;
  overflow:hidden;
  padding:68px 0 56px;
  border-bottom:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.category-banner::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(20,23,32,.97) 10%,rgba(20,23,32,.86) 65%,rgba(20,23,32,.6));
}
.category-banner-inner{position:relative;z-index:2}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  margin-bottom:20px;
}
.crumb a:hover{color:var(--brand)}
.crumb .sep{opacity:.5}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;
  border-radius:var(--radius-tag);
  background:rgba(194,245,27,.08);
  border:1px solid rgba(194,245,27,.35);
  color:var(--brand);
  font-size:12px;font-weight:700;
  letter-spacing:1px;
  margin-bottom:16px;
}
.category-banner h1{
  font-size:clamp(30px,4vw,44px);
  font-weight:800;
  line-height:1.25;
  letter-spacing:.5px;
  max-width:760px;
}
.category-banner h1 em{
  font-style:normal;
  color:var(--brand);
}
.banner-lead{
  color:#C5CBD6;
  font-size:17px;
  max-width:680px;
  margin-top:18px;
  line-height:1.8;
}

/* ========== section heading ========== */
.sec-head{margin-bottom:32px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand);
  font-size:13px;font-weight:700;
  letter-spacing:1.6px;
  text-transform:uppercase;
  margin-bottom:10px;
}
.eyebrow::before{
  content:"";width:18px;height:2px;background:var(--brand);border-radius:4px;
}
.sec-head h2{
  font-size:clamp(25px,3vw,32px);
  font-weight:800;
  line-height:1.35;
  letter-spacing:.4px;
}
.sec-head p{
  color:var(--muted);
  margin-top:10px;
  max-width:620px;
  font-size:15px;
  line-height:1.8;
}

/* ========== large feature cover card ========== */
.feature-card{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-xl);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
}
.feature-layer{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
}
.feature-media{
  min-height:360px;
  position:relative;
  background:linear-gradient(120deg,#252D3A,#10141B);
}
.feature-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(260deg,rgba(20,24,32,.25) 0%,rgba(20,24,32,0) 50%,rgba(20,24,32,.72) 100%);
}
.feature-media img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
}
.feature-body{
  padding:44px 40px;
  display:flex;flex-direction:column;justify-content:center;
}
.feature-body .big-tag{
  display:inline-flex;align-self:flex-start;
  padding:8px 14px;
  border-radius:var(--radius-tag);
  background:rgba(139,124,255,.12);
  border:1px solid rgba(139,124,255,.35);
  color:#C7BEFF;
  font-size:12px;font-weight:700;
  letter-spacing:1px;
  margin-bottom:18px;
}
.feature-body h2{
  font-size:clamp(22px,2.2vw,28px);
  font-weight:800;
  line-height:1.4;
  letter-spacing:.4px;
  margin-bottom:16px;
}
.feature-body h2 span{color:var(--brand)}
.feature-lead{color:#B6BECC;font-size:15px;line-height:1.9;margin-bottom:22px}
.feature-points{
  display:flex;flex-direction:column;gap:12px;
  margin-bottom:28px;
}
.feature-points li{
  display:flex;gap:12px;align-items:flex-start;
  color:#DDE3EB;font-size:14px;line-height:1.6;
}
.feature-points i{
  color:var(--brand);
  font-size:13px;
  margin-top:4px;
  flex:0 0 auto;
}
.feature-actions{
  display:flex;gap:12px;flex-wrap:wrap;
}
.feature-actions .btn{height:44px}

/* ========== guide themes cards ========== */
.theme-grid .cell{margin-bottom:24px}
.theme-card{
  display:flex;
  height:100%;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-xl);
  overflow:hidden;
  box-shadow:0 6px 18px rgba(0,0,0,.18);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.theme-card:hover{
  transform:translateY(-4px);
  border-color:rgba(194,245,27,.28);
  box-shadow:0 18px 42px rgba(0,0,0,.4);
}
.theme-media{
  flex:0 0 142px;
  position:relative;
  overflow:hidden;
  min-height:150px;
}
.theme-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.theme-card:hover .theme-media img{transform:scale(1.05)}
.theme-info{
  display:flex;
  flex-direction:column;
  padding:20px 20px 18px;
  width:100%;
}
.theme-info .info-meta{
  display:flex;gap:8px;align-items:center;
  flex-wrap:wrap;
  margin-bottom:10px;
}
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;
  padding:3px 10px;
  border-radius:var(--radius-tag);
  border:1px solid rgba(139,124,255,.35);
  background:rgba(139,124,255,.08);
  color:#C2B9FF;
  line-height:1.5;
}
.tag.brand-tag{
  border-color:rgba(194,245,27,.3);
  background:rgba(194,245,27,.08);
  color:var(--brand);
}
.theme-info h3{
  font-size:18px;font-weight:750;
  line-height:1.45;
  color:var(--text);
  margin-bottom:8px;
  letter-spacing:.2px;
}
.theme-info p{
  color:var(--muted);
  font-size:13.5px;
  line-height:1.7;
  flex:1;
}
.theme-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:14px;
  color:var(--brand);
  font-size:13px;
  font-weight:700;
}
.theme-link i{transition:transform .2s ease}
.theme-card:hover .theme-link i{transform:translateX(4px)}

/* ========== reading path ========== */
.path-section{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(30,37,48,.4),rgba(18,21,27,.5));
}
.path-grid .cell{margin-bottom:20px}
.path-item{
  position:relative;
  height:100%;
  background:rgba(255,255,255,.02);
  border:1px solid var(--line);
  border-radius:var(--radius-xl);
  padding:28px 22px 24px;
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.path-item:hover{border-color:rgba(194,245,27,.3)}
.path-item::before{
  position:absolute;
  right:12px;top:-14px;
  font-size:82px;
  font-weight:900;
  line-height:1;
  letter-spacing:-4px;
  color:rgba(255,255,255,.03);
  font-family:inherit;
}
.path-item:nth-child(1)::before{content:"01"}
.path-item:nth-child(2)::before{content:"02"}
.path-item:nth-child(3)::before{content:"03"}
.path-item:nth-child(4)::before{content:"04"}
.path-no{
  display:inline-flex;
  align-items:center;justify-content:center;
  width:34px;height:34px;
  border-radius:10px;
  background:rgba(194,245,27,.1);
  border:1px solid rgba(194,245,27,.25);
  color:var(--brand);
  font-size:13px;font-weight:800;
  margin-bottom:18px;
}
.path-item h3{font-size:17px;font-weight:750;margin-bottom:10px;letter-spacing:.2px}
.path-item p{color:var(--muted);font-size:14px;line-height:1.75}
.path-item a{color:var(--brand);font-weight:700;font-size:13px}
.path-item a:hover{color:#D0FB32}

/* ========== quality / process ========== */
.quality-box{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-xl);
  padding:34px 36px;
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  align-items:center;
  box-shadow:0 12px 34px rgba(0,0,0,.25);
}
.quality-copy{flex:1 1 330px}
.quality-copy .callout{
  display:flex;align-items:center;gap:10px;
  color:#B6BECC;
  font-size:14.5px;
  background:rgba(139,124,255,.08);
  border-left:3px solid var(--violet);
  padding:12px 14px;
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  margin-bottom:20px;
}
.quality-copy h2{font-size:22px;font-weight:800;letter-spacing:.3px;margin-bottom:14px}
.quality-copy p{color:var(--muted);font-size:14px;line-height:1.85}
.stat-row{
  flex:1 1 360px;
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:28px;
}
.stat-cell strong{
  display:block;
  font-size:28px;
  line-height:1.2;
  font-weight:900;
  letter-spacing:.5px;
  color:var(--brand);
}
.stat-cell strong.violet{color:var(--violet)}
.stat-cell span{color:#A6AFBD;font-size:14px;margin-top:4px;display:block}

/* ========== compliance note ========== */
.note-strip{
  display:flex;
  gap:16px;
  background:rgba(255,255,255,.03);
  border:1px dashed var(--line-strong);
  border-radius:var(--radius-xl);
  padding:24px 26px;
  color:#AEB6C2;
  font-size:14px;
  line-height:1.8;
  align-items:center;
}
.note-strip i{color:var(--brand);width:20px;text-align:center;font-size:18px;flex:0 0 auto}
.note-strip strong{color:#E7EBF2;font-weight:700}

/* ========== faq accordion ========== */
.faq-wrap{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-xl);
  padding:8px 28px;
  box-shadow:var(--shadow-lg);
}
.accordion{border:none;background:transparent}
.accordion-item{
  background:transparent;
  border:none;
  border-bottom:1px solid var(--line);
  margin:0;
}
.accordion-item:last-child{border-bottom:none}
.accordion-title{
  display:flex;
  align-items:center;
  justify-content:space-between;
  border:none;
  border-radius:0;
  background:transparent;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  padding:18px 0;
  transition:color .2s ease;
}
.accordion-title:hover,.accordion-title:focus{
  background:transparent;
  color:var(--brand);
}
.accordion-title::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:13px;
  color:var(--brand);
  order:2;
  flex:0 0 auto;
  transition:transform .3s ease;
}
.accordion-title[aria-expanded="true"]::after{transform:rotate(180deg)}
.accordion-title:hover,.accordion-title:focus{color:var(--brand)}
.accordion-content{
  background:transparent;
  border:none;
  color:#B4BDC9;
  font-size:14.5px;
  line-height:1.85;
  padding:0 28px 22px 0;
}
.accordion-content a{color:var(--brand);font-weight:600}

/* ========== bottom cta ========== */
.loc-cta{
  background:var(--panel-2);
  border:1px solid var(--line);
  border-radius:var(--radius-xl);
  padding:40px 38px;
  box-shadow:var(--shadow-lg);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  position:relative;
  overflow:hidden;
}
.loc-cta::before{
  content:"AYX";
  position:absolute;
  right:-14px;bottom:-32px;
  font-size:112px;
  font-weight:900;
  letter-spacing:-6px;
  color:rgba(194,245,27,.04);
  line-height:1;
}
.loc-cta h2{font-size:24px;font-weight:850;letter-spacing:.3px}
.loc-cta p{color:var(--muted);font-size:14px;margin-top:6px;max-width:520px;line-height:1.7}
.loc-cta .cta-btns{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1}

/* ========== footer ========== */
.site-footer{
  background:#101319;
  border-top:1px solid var(--line);
  margin-top:34px;
}
.site-footer .wrap{padding-top:58px;padding-bottom:38px}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr .8fr 1fr;
  gap:48px;
  padding-bottom:38px;
  border-bottom:1px solid var(--line);
}
.footer-brand-logo{
  display:inline-flex;
  align-items:center;
  gap:12px;
  margin-bottom:16px;
}
.footer-brand-logo .brand-symbol{
  width:38px;height:38px;
  font-size:12px;
  border-radius:9px;
}
.footer-brand-text{
  display:flex;
  flex-direction:column;line-height:1.3;
}
.footer-brand-text strong{font-size:17px}
.footer-brand-text small{color:var(--muted);font-size:12px}
.footer-brand-copy{
  color:var(--muted);
  font-size:14px;
  max-width:430px;
  line-height:1.8;
  margin-bottom:0;
}
.footer-title{
  color:var(--text);
  font-size:15px;
  font-weight:750;
  letter-spacing:.4px;
  margin:2px 0 18px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  color:var(--muted);
  font-size:14px;
  width:max-content;
  position:relative;
}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:8px;
  padding-top:24px;
  color:rgba(154,166,181,.75);
  font-size:13px;
}
.footer-bottom .legal{opacity:.62;font-size:12px}

/* ========== nav mask ========== */
.page-mask{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.6);
  z-index:1150;
  opacity:0;
  pointer-events:none;
  transition:opacity .3s ease;
}
.page-mask.show{opacity:1;pointer-events:auto}

/* ========== responsive ========== */
@media (max-width:1240px){
  .theme-media{flex:0 0 120px}
  .feature-body{padding:32px 26px}
}

@media (max-width:1024px){
  .mobile-topbar{display:block}
  .le-sidebar{
    transform:translateX(-105%);
    width:284px;
    box-shadow:0 0 50px rgba(0,0,0,.5);
  }
  body.nav-open .le-sidebar{transform:translateX(0)}
  .right-content{
    margin-left:0;
    padding-top:70px;
  }
  .section{--space-section:72px}
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:36px;
  }
}

@media (max-width:768px){
  .wrap,.container{padding:0 20px}
  .category-banner{padding:48px 0}
  .category-banner h1{font-size:30px}
  .banner-lead{font-size:15px}
  .feature-layer{grid-template-columns:1fr}
  .feature-media{min-height:220px;order:1}
  .feature-media img{position:relative;height:auto;min-height:220px}
  .feature-media::after{display:none}
  .feature-body{order:2;padding:30px 22px}
  .theme-media{flex-basis:104px;min-height:130px}
  .theme-info{padding:16px 14px}
  .quality-box{padding:26px 18px}
  .stat-row{grid-template-columns:1fr 1fr;gap:20px}
  .stat-cell strong{font-size:25px}
  .faq-wrap{padding:6px 18px}
  .loc-cta{padding:30px 22px}
}

@media (max-width:640px){
  .grid-padding-x{margin-left:-6px;margin-right:-6px}
  .grid-x > .cell{padding-left:10px;padding-right:10px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .theme-card{flex-direction:column}
  .theme-media{width:100%;flex-basis:auto;min-height:158px}
  .theme-media img{height:158px}
  .feature-actions .btn,.loc-cta .cta-btns .btn{width:100%}
  .category-banner h1{font-size:27px}
  .sec-head h2{font-size:24px}
  .path-item{padding:22px 18px}
}
@media (max-width:520px){
  body{font-size:15px}
  .mobile-topbar-inner{padding:10px 16px}
  .brand-symbol{width:34px;height:34px}
  .stage-stat,.stat-row{grid-template-columns:1fr}
  .feature-media{min-height:190px}
  .left-side-title{font-size:25px}
  .btn{height:46px}
}

/* roulang page: category1 */
:root {
      --bg: #161A22;
      --bg-deep: #12151B;
      --card: #1E2530;
      --elev: #252D3A;
      --line: rgba(255, 255, 255, .09);
      --text: #F1F4F8;
      --muted: #9AA6B5;
      --brand: #C2F51B;
      --brand-strong: #D7F748;
      --accent: #8B7CFF;
      --radius-big: 18px;
      --radius-card: 18px;
      --radius-btn: 10px;
      --radius-pill: 999px;
      --shadow: 0 16px 36px rgba(0, 0, 0, .35);
      --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }

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

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

    body {
      margin: 0;
      background-color: var(--bg);
      color: var(--text);
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.75;
      letter-spacing: .3px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    body.nav-open {
      overflow: hidden;
    }

    h1, h2, h3, h4, p, figure, ul, ol, dl, blockquote {
      margin: 0;
      padding: 0;
    }

    h1, h2, h3, h4 {
      line-height: 1.4;
      color: var(--text);
      font-weight: 700;
    }

    ul, ol {
      list-style: none;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    a {
      color: var(--brand);
      text-decoration: none;
      transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
    }

    button, input, select, textarea {
      font-family: inherit;
      color: inherit;
    }

    button {
      cursor: pointer;
    }

    [hidden] {
      display: none !important;
    }

    a:focus-visible, button:focus-visible {
      outline: 3px solid rgba(194, 245, 27, .72);
      outline-offset: 2px;
      border-radius: 8px;
    }

    ::selection {
      background: rgba(194, 245, 27, .22);
      color: #fff;
    }

    .wrap {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .main-canvas {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .skip-link {
      position: fixed;
      top: -60px;
      left: 20px;
      z-index: 200;
      background: var(--brand);
      color: #0a0d11;
      padding: 8px 16px;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 600;
      transition: top .2s ease;
    }

    .skip-link:focus {
      top: 12px;
    }

    /* 页面骨架：桌面左侧导航 + 右侧内容区 */
    .page-main {
      position: relative;
      margin-left: 272px;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    .main-content {
      flex: 1 0 auto;
    }

    .site-sidebar {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      z-index: 80;
      width: 272px;
      background: var(--bg-deep);
      border-right: 1px solid var(--line);
      transform: translateX(-100%);
      transition: transform .24s ease;
    }

    .sidebar-inner {
      display: flex;
      flex-direction: column;
      height: 100%;
      padding: 34px 22px 26px;
      overflow-y: auto;
    }

    .sidebar-logo {
      margin-bottom: 42px;
      padding: 0 4px;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      color: var(--text);
      line-height: 1.2;
    }

    .brand-logo:hover {
      color: var(--text);
    }

    .brand-symbol {
      flex: 0 0 auto;
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: var(--brand);
      color: #0B0E13;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      font-weight: 900;
      letter-spacing: .4px;
    }

    .brand-copy {
      display: flex;
      flex-direction: column;
      min-width: 0;
    }

    .brand-copy strong {
      font-size: 17px;
      font-weight: 800;
      letter-spacing: .3px;
      white-space: nowrap;
    }

    .brand-copy small {
      margin-top: 3px;
      font-size: 11px;
      color: var(--muted);
      letter-spacing: .4px;
    }

    .sidebar-nav {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .sidebar-nav .nav-link {
      position: relative;
      display: flex;
      align-items: center;
      min-height: 48px;
      padding: 0 14px;
      border-radius: 10px;
      color: #D3DAE3;
      font-weight: 500;
      box-shadow: inset 0 0 0 var(--accent);
      transition: color .2s ease, background .2s ease, transform .2s ease, box-shadow .2s ease;
    }

    .sidebar-nav .nav-link:hover {
      background: rgba(255, 255, 255, .08);
      color: var(--text);
      transform: translateX(3px);
    }

    .sidebar-nav .nav-link.is-active {
      color: var(--brand);
      background: rgba(194, 245, 27, .07);
      box-shadow: inset 3px 0 0 var(--accent);
    }

    .sidebar-nav .nav-index {
      margin-right: 14px;
      font-size: 12px;
      letter-spacing: 1.2px;
      color: var(--muted);
    }

    .sidebar-nav .nav-link.is-active .nav-index {
      color: var(--accent);
    }

    .sidebar-foot {
      margin-top: auto;
      padding-top: 26px;
      border-top: 1px solid var(--line);
    }

    .sidebar-position {
      font-size: 13px;
      color: var(--muted);
      line-height: 1.7;
    }

    .sidebar-position strong {
      display: block;
      font-size: 15px;
      font-weight: 700;
      color: var(--text);
    }

    .sidebar-copyright {
      margin-top: 14px;
      font-size: 12px;
      color: #68717E;
    }

    .mobile-topbar {
      display: none;
    }

    .mobile-backdrop {
      position: fixed;
      inset: 0;
      z-index: 59;
      background: rgba(4, 6, 10, .65);
      opacity: 0;
      pointer-events: none;
      transition: opacity .2s ease;
    }

    body.nav-open .mobile-backdrop {
      opacity: 1;
      pointer-events: auto;
    }

    @@media (min-width: 1025px) {
      .site-sidebar {
        transform: none;
      }
      .mobile-backdrop {
        display: none !important;
      }
    }

    @@media (max-width: 1024.98px) {
      .page-main {
        margin-left: 0;
        padding-top: 64px;
      }

      .mobile-topbar {
        position: fixed;
        top: 0;
        right: 0;
        left: 0;
        z-index: 100;
        height: 64px;
        display: block;
        background: rgba(18, 21, 27, .94);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--line);
      }

      .mobile-topbar-inner {
        max-width: 1240px;
        height: 64px;
        margin: 0 auto;
        padding: 0 20px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
      }

      .mobile-topbar .brand-logo .brand-symbol {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        font-size: 14px;
      }

      .mobile-topbar .brand-copy strong {
        font-size: 15px;
      }

      .mobile-menu-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 42px;
        height: 42px;
        border-radius: 10px;
        border: 1px solid var(--line);
        background: transparent;
        color: var(--text);
        transition: border-color .2s ease, color .2s ease, background .2s ease;
      }

      .mobile-menu-btn:hover {
        border-color: var(--brand);
        color: var(--brand);
        background: rgba(194, 245, 27, .06);
      }

      .site-sidebar {
        top: 64px;
        bottom: 0;
        z-index: 90;
        width: min(82vw, 330px);
        transform: translateX(-100%);
        box-shadow: none;
      }

      .sidebar-inner {
        padding: 24px 18px 26px;
      }

      .sidebar-logo {
        display: none;
      }

      body.nav-open .site-sidebar {
        transform: translateX(0);
        box-shadow: 20px 0 60px rgba(0, 0, 0, .46);
      }
    }

    /* 按钮 */
    .site-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 48px;
      padding: 0 22px;
      border: 1px solid transparent;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      background: transparent;
      line-height: 1;
      text-align: center;
      transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
    }

    .site-btn.primary {
      background: var(--brand);
      color: #0A0E13;
      border-color: var(--brand);
    }

    .site-btn.primary:hover {
      background: var(--brand-strong);
      border-color: var(--brand-strong);
      color: #0A0E13;
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(194, 245, 27, .16);
    }

    .site-btn.ghost {
      border-color: rgba(255, 255, 255, .24);
      color: var(--text);
    }

    .site-btn.ghost:hover {
      border-color: var(--accent);
      color: var(--accent);
      transform: translateY(-2px);
    }

    /* 顶部分类横带题图 */
    .cat-hero {
      position: relative;
      border-bottom: 1px solid var(--line);
      background-color: #131720;
      background-image:
        linear-gradient(105deg, rgba(13, 16, 22, .97) 0%, rgba(18, 22, 29, .88) 52%, rgba(22, 26, 34, .66) 100%),
        url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center 36%;
    }

    .cat-hero-inner {
      position: relative;
      max-width: 1240px;
      margin: 0 auto;
      padding: 86px 24px 78px;
    }

    .crumbs {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 9px;
      font-size: 13px;
      color: var(--muted);
      margin-bottom: 24px;
    }

    .crumbs a {
      color: #B7C1CE;
    }

    .crumbs a:hover {
      color: var(--brand);
    }

    .crumbs span {
      opacity: .7;
    }

    .cat-hero h1 {
      max-width: 880px;
      margin: 0 0 18px;
      font-size: clamp(34px, 5vw, 50px);
      line-height: 1.3;
      letter-spacing: .8px;
    }

    .cat-hero-lead {
      max-width: 800px;
      margin: 0 0 26px;
      font-size: clamp(16px, 1.6vw, 19px);
      color: #C7CFDA;
      line-height: 1.8;
    }

    .hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 30px;
    }

    .meta-pill {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 6px 14px;
      background: rgba(37, 45, 58, .58);
      border: 1px solid var(--line);
      border-radius: var(--radius-pill);
      font-size: 13px;
      color: #C7CFDA;
    }

    .meta-pill b {
      color: var(--muted);
      font-weight: 500;
    }

    .theme-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    /* 双栏主体 */
    .cat1-split-wrap {
      padding-top: 56px;
      padding-bottom: 72px;
    }

    .cat1-layout {
      align-items: flex-start;
    }

    .cat1-main {
      min-width: 0;
    }

    .cat-block {
      margin-bottom: 18px;
    }

    .cat-block + .cat-block {
      margin-top: 40px;
    }

    .section-heading {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 16px;
    }

    .sec-index {
      flex: 0 0 auto;
      margin-top: 7px;
      padding: 3px 13px;
      border: 1px solid rgba(139, 124, 255, .38);
      border-radius: var(--radius-pill);
      color: var(--accent);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .6px;
    }

    .sec-kicker {
      margin-bottom: 5px;
      color: var(--brand);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 1.8px;
    }

    .section-heading h2 {
      margin: 0;
      font-size: clamp(22px, 2.4vw, 30px);
      letter-spacing: .2px;
    }

    .body-copy {
      max-width: 72ch;
      margin: 18px 0 10px;
      color: #C8D0DC;
      font-size: 16px;
    }

    .body-copy + .topic-list,
    .cat-block .topic-list {
      margin-top: 24px;
    }

    /* 评测方向主题列表 */
    .topic-list {
      display: flex;
      flex-direction: column;
      border-bottom: 1px solid var(--line);
    }

    .topic-item {
      display: grid;
      grid-template-columns: 60px minmax(0, 1fr);
      gap: 18px 24px;
      padding: 20px 8px;
      border-top: 1px solid var(--line);
      border-radius: 14px;
      transition: background .2s ease, padding-left .2s ease, border-color .2s ease;
    }

    .topic-item:hover {
      background: rgba(255, 255, 255, .035);
      padding-left: 16px;
      border-color: rgba(139, 124, 255, .2);
    }

    .topic-no {
      padding-top: 2px;
      color: var(--accent);
      font-size: 15px;
      font-weight: 800;
      letter-spacing: .8px;
    }

    .topic-text h3 {
      margin: 0 0 7px;
      font-size: 20px;
      letter-spacing: .2px;
    }

    .topic-text p {
      max-width: 58ch;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.8;
    }

    /* 专题阅读路径 */
    .route-note {
      margin-top: 22px;
      padding: 24px;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow);
    }

    .route-note h3 {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 8px;
      font-size: 18px;
    }

    .route-note h3 .dot {
      display: inline-flex;
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--brand);
      box-shadow: 0 0 0 5px rgba(194, 245, 27, .14);
    }

    .route-note p {
      max-width: 76ch;
      color: var(--muted);
      font-size: 15px;
    }

    .route-note p + p {
      margin-top: 12px;
    }

    /* 整理方式 */
    .method-grid {
      margin-top: 8px;
    }

    .method-grid .cell {
      margin-bottom: 18px;
    }

    .method-card {
      height: 100%;
      padding: 24px 24px 26px;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-card);
      box-shadow: 0 12px 24px rgba(0, 0, 0, .24);
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }

    .method-card:hover {
      transform: translateY(-4px);
      border-color: rgba(139, 124, 255, .34);
      box-shadow: 0 18px 40px rgba(0, 0, 0, .36);
    }

    .method-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      margin-bottom: 16px;
      border-radius: 12px;
      color: var(--accent);
      background: rgba(139, 124, 255, .12);
      border: 1px solid rgba(139, 124, 255, .3);
    }

    .method-card.light .method-icon {
      color: var(--brand);
      background: rgba(194, 245, 27, .1);
      border-color: rgba(194, 245, 27, .3);
    }

    .method-card h3 {
      margin: 0 0 8px;
      font-size: 18px;
      line-height: 1.5;
    }

    .method-card p {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
    }

    .method-card strong {
      color: var(--text);
      font-weight: 600;
    }

    /* 右侧窄边栏 */
    .cat1-side {
      align-self: flex-start;
    }

    .side-card {
      margin-bottom: 22px;
      padding: 24px;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow);
    }

    .side-card h2 {
      margin-bottom: 12px;
      font-size: 19px;
      letter-spacing: .2px;
    }

    .side-card p {
      color: var(--muted);
      font-size: 15px;
      line-height: 1.85;
    }

    .side-card p + p {
      margin-top: 12px;
    }

    .side-card .side-icon-title {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .side-card .side-icon-title .brand-symbol {
      width: 34px;
      height: 34px;
      border-radius: 9px;
      font-size: 12px;
    }

    .side-card .side-icon-title h2 {
      margin-bottom: 0;
    }

    .detail-list {
      display: flex;
      flex-direction: column;
      margin-top: 14px;
    }

    .detail-list li {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      padding: 11px 0;
      border-bottom: 1px dashed var(--line);
      font-size: 14px;
      color: var(--muted);
    }

    .detail-list li:last-child {
      border-bottom: 0;
    }

    .detail-list b {
      text-align: right;
      color: var(--text);
      font-weight: 600;
    }

    .side-link-list {
      display: flex;
      flex-direction: column;
      margin-top: 8px;
    }

    .side-link-list a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 13px 0;
      border-bottom: 1px dashed var(--line);
      color: var(--muted);
      font-size: 15px;
    }

    .side-link-list a:last-child {
      border-bottom: 0;
    }

    .side-link-list a:hover {
      color: var(--brand);
      padding-left: 4px;
    }

    .side-link-list a .arrow {
      color: var(--muted);
      transition: color .2s ease, transform .2s ease;
    }

    .side-link-list a:hover .arrow {
      color: var(--brand);
      transform: translateX(3px);
    }

    .side-image {
      margin-top: 16px;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: 14px;
    }

    .side-image figcaption {
      padding: 12px 14px;
      background: var(--bg-deep);
      border-top: 1px solid var(--line);
      color: var(--muted);
      font-size: 13px;
      line-height: 1.7;
    }

    /* FAQ 问答 */
    .faq-section {
      padding: 76px 0 78px;
      background: #181E27;
      border-top: 1px solid var(--line);
    }

    .faq-inner {
      max-width: 1060px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .faq-inner .section-heading {
      margin-bottom: 28px;
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 14px;
      overflow: hidden;
      transition: border-color .2s ease, background .2s ease;
    }

    .faq-item.is-open,
    .faq-item:hover {
      border-color: rgba(194, 245, 27, .28);
    }

    .faq-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      width: 100%;
      padding: 20px 22px;
      border: 0;
      background: transparent;
      text-align: left;
      font-size: 18px;
      font-weight: 600;
      color: var(--text);
      letter-spacing: .2px;
      transition: color .2s ease, background .2s ease;
    }

    .faq-title:hover {
      background: rgba(255, 255, 255, .03);
      color: var(--brand);
    }

    .faq-icon {
      flex: 0 0 auto;
      color: var(--muted);
      transition: transform .22s ease, color .22s ease;
    }

    .faq-item.is-open .faq-icon {
      transform: rotate(180deg);
      color: var(--brand);
    }

    .faq-content {
      display: none;
      padding: 0 22px 22px;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.85;
      max-width: 90ch;
    }

    .faq-content p + p {
      margin-top: 10px;
    }

    .faq-item.is-open .faq-content {
      display: block;
    }

    /* 收藏与复制 */
    .save-cta {
      padding: 76px 0 84px;
    }

    .cta-card {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      padding: 38px 42px;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: 22px;
      box-shadow: var(--shadow);
    }

    .cta-card h2 {
      margin-bottom: 8px;
      font-size: clamp(23px, 2.6vw, 30px);
    }

    .cta-card-copy p {
      max-width: 64ch;
      color: var(--muted);
      font-size: 15px;
    }

    .cta-card-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      flex: 0 0 auto;
    }

    /* 统一页脚 */
    .site-footer {
      margin-top: auto;
      padding: 54px 0 24px;
      background: var(--bg-deep);
      border-top: 1px solid var(--line);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr .8fr 1fr;
      gap: 52px;
      padding-bottom: 38px;
    }

    .footer-brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--text);
      line-height: 1.2;
    }

    .footer-brand-logo:hover {
      color: var(--text);
    }

    .footer-brand-logo .brand-symbol {
      width: 38px;
      height: 38px;
      border-radius: 11px;
      font-size: 13px;
    }

    .footer-brand-logo {
      margin-bottom: 12px;
    }

    .footer-brand-text {
      display: flex;
      flex-direction: column;
    }

    .footer-brand-text strong {
      font-size: 16px;
      font-weight: 800;
    }

    .footer-brand-text small {
      margin-top: 2px;
      font-size: 11px;
      color: var(--muted);
    }

    .footer-brand-copy {
      max-width: 36em;
      margin-top: 12px;
      color: #8B94A1;
      font-size: 14px;
      line-height: 1.8;
    }

    .footer-title {
      margin-bottom: 14px;
      font-size: 15px;
      font-weight: 700;
      color: var(--text);
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 11px;
    }

    .footer-links a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #8894A2;
      font-size: 14px;
      width: fit-content;
    }

    .footer-links a::before {
      content: "";
      display: inline-block;
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: var(--accent);
      opacity: .6;
    }

    .footer-links a:hover {
      color: var(--brand);
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      padding-top: 22px;
      border-top: 1px solid var(--line);
      font-size: 12px;
      color: #6F7885;
    }

    .footer-bottom .legal {
      color: #525B66;
    }

    /* 移动端细节 */
    @@media (max-width: 1024.98px) {
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }

      .cat1-layout {
        row-gap: 40px;
      }

      .cat1-side {
        position: static;
      }

      .cta-card {
        flex-direction: column;
        align-items: flex-start;
        padding: 30px;
      }

      .cta-card-actions {
        width: 100%;
      }
    }

    @@media (max-width: 767.98px) {
      .cat-hero-inner {
        padding: 58px 20px 52px;
      }

      .cat-hero h1 {
        font-size: 32px;
        line-height: 1.32;
      }

      .cat-hero-lead {
        font-size: 16px;
      }

      .hero-meta {
        gap: 8px;
      }

      .meta-pill {
        padding: 5px 11px;
        font-size: 12px;
      }

      .theme-actions {
        width: 100%;
      }

      .theme-actions .site-btn {
        width: 100%;
      }

      .cat1-split-wrap {
        padding-top: 38px;
        padding-bottom: 48px;
      }

      .cat-block + .cat-block {
        margin-top: 30px;
      }

      .topic-item {
        grid-template-columns: 1fr;
        gap: 6px 0;
        padding: 20px 4px;
      }

      .topic-item:hover {
        padding-left: 8px;
      }

      .topic-no {
        font-size: 13px;
      }

      .method-grid .cell {
        margin-bottom: 12px;
      }

      .section-heading {
        flex-direction: column;
        gap: 10px;
      }

      .sec-index {
        align-self: flex-start;
        margin-top: 0;
      }

      .faq-section {
        padding: 52px 0;
      }

      .faq-title {
        padding: 17px 17px;
        font-size: 16px;
      }

      .faq-content {
        padding: 0 17px 19px;
        font-size: 14px;
      }

      .save-cta {
        padding: 40px 0 46px;
      }

      .cta-card {
        padding: 24px 20px;
        border-radius: 18px;
      }

      .cta-card-actions .site-btn {
        width: 100%;
        justify-content: center;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @@media (max-width: 520px) {
      .cat-hero h1 {
        font-size: 29px;
        letter-spacing: .4px;
      }

      .cat1-split-wrap,
      .faq-inner,
      .cat-hero-inner {
        padding-left: 20px;
        padding-right: 20px;
      }

      .footer-brand-copy {
        font-size: 13px;
      }

      .footer-grid {
        gap: 24px;
      }
    }

    @@media (prefers-reduced-motion: reduce) {
      * {
        transition: none !important;
        scroll-behavior: auto !important;
      }
    }

.faq-content { display: block !important; }