/* Chinesia article page styles — shared by all /articles/<lang>/*.html
   Generated from the legacy inline <style>; edit here, not in the pages. */
.site-header{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.96);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);max-width:1200px;margin:0 auto;padding:0 24px;gap:8px;}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.03em;color:var(--ink);flex-shrink:0;}
.nav-logo img{width:36px;height:36px;border-radius:10px;}
.nav-logo:hover{color:var(--ink);}
.lang-drop{position:relative;display:inline-flex;align-items:center;}
.lang-drop-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 11px;border:1px solid var(--border-2);border-radius:var(--radius-sm);font:inherit;font-size:13px;font-weight:500;color:var(--ink-2);background:var(--surface);cursor:pointer;transition:border-color .15s,color .15s;white-space:nowrap;}
.lang-drop-btn:hover{border-color:var(--red);color:var(--red);}
.lang-drop-btn svg{width:13px;height:13px;transition:transform .2s;opacity:.6;}
.lang-drop.open .lang-drop-btn svg{transform:rotate(180deg);}
.lang-drop-menu{display:none;position:absolute;top:calc(100% + 8px);right:0;min-width:180px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:0 12px 40px rgba(15,23,42,.12);padding:6px;z-index:300;}
.lang-drop.open .lang-drop-menu{display:block;}
.lang-opt{display:flex;align-items:center;justify-content:space-between;padding:9px 12px;border-radius:var(--radius-sm);cursor:pointer;font-size:14px;color:var(--ink-2);transition:background .1s;}
.lang-opt:hover{background:var(--surface-2);}
.lang-opt.active{color:var(--red);font-weight:600;}
.lang-opt .lang-opt-native{font-size:12px;color:var(--ink-4);}
.art-hero{background:linear-gradient(135deg,#0f172a 0%,#1e1b4b 55%,#3b0764 100%);padding:80px 24px 64px;color:#fff;}
.art-hero-inner{max-width:760px;margin:0 auto;}
.art-cat-label{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;background:rgba(229,41,74,.2);border:1px solid rgba(229,41,74,.3);font-size:12px;font-weight:600;color:#fca5a5;margin-bottom:20px;}
.art-hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;letter-spacing:-.04em;line-height:1.18;color:#fff;margin:0 0 20px;word-break:break-word;}
.art-meta-bar{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:rgba(255,255,255,.55);}
.art-meta-bar span{display:inline-flex;align-items:center;gap:5px;}
.art-cover-wrap{max-width:760px;margin:-32px auto 0;padding:0 24px;}
.art-cover-wrap img{width:100%;height:auto;border-radius:var(--radius-lg);display:block;box-shadow:0 32px 80px rgba(0,0,0,.2);}
.art-content{max-width:760px;margin:0 auto;padding:48px 24px 80px;}
.art-content h2{font-size:clamp(1.2rem,2.5vw,1.6rem);font-weight:700;letter-spacing:-.03em;margin:40px 0 16px;color:var(--ink);}
.art-content h3{font-size:1.05rem;font-weight:600;margin:28px 0 10px;color:var(--ink);}
.art-content p{font-size:16px;line-height:1.9;color:var(--ink-2);margin:0 0 18px;}
.art-content ul,.art-content ol{padding-left:24px;margin:0 0 18px;}
.art-content li{font-size:16px;line-height:1.8;color:var(--ink-2);margin-bottom:6px;}
.art-content blockquote{border-left:3px solid var(--red);padding:14px 20px;margin:24px 0;background:var(--surface-2);border-radius:0 var(--radius-sm) var(--radius-sm) 0;}
.art-content blockquote p{margin:0;font-style:italic;color:var(--ink-2);}
.art-tip-box{background:linear-gradient(135deg,#fff1f4 0%,#fff5ee 100%);border:1px solid rgba(229,41,74,.18);border-radius:var(--radius-lg);padding:24px 28px;margin:28px 0;}
.art-tip-box .tip-label{font-size:12px;font-weight:700;color:var(--red);letter-spacing:.06em;text-transform:uppercase;margin-bottom:8px;}
.art-tip-box p{margin:0;font-size:15px;color:var(--ink-2);}
.art-cta{background:var(--red);border-radius:var(--radius-lg);padding:36px 32px;text-align:center;margin-top:12px;}
.art-cta h3{color:#fff;font-size:1.3rem;font-weight:700;margin:0 0 10px;}
.art-cta p{color:rgba(255,255,255,.85);font-size:14px;margin:0 0 20px;}
.art-cta .btn-w{display:inline-flex;align-items:center;gap:6px;padding:13px 28px;background:#fff;color:var(--red);border-radius:var(--radius-sm);font-weight:600;font-size:15px;transition:transform .15s,box-shadow .2s;}
.art-cta .btn-w:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(0,0,0,.15);color:var(--red);}
.back-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:rgba(255,255,255,.6);padding:8px 0;margin-bottom:16px;transition:color .15s;}
.back-link:hover{color:#fff;}

/* ── Full Nav (articles) ── */
.nav-links{display:flex;align-items:center;gap:2px;}
@media(max-width:959px){.nav-links{display:none!important;}.nav-toggle{display:flex!important;}}
.nav-link{padding:8px 13px;font-size:14px;font-weight:500;color:var(--ink-2);border-radius:var(--radius-sm);}
.nav-link:hover{background:var(--surface-2);color:var(--ink);}
.nav-link.active{color:var(--red);font-weight:600;}
.nav-drop{position:relative;}
.nav-drop-btn{display:flex;align-items:center;gap:5px;padding:8px 13px;font-size:14px;font-weight:500;color:var(--ink-2);border-radius:var(--radius-sm);cursor:pointer;background:none;border:none;font-family:inherit;}
.nav-drop-btn:hover{background:var(--surface-2);color:var(--ink);}
.drop-arrow{width:14px;height:14px;transition:transform .2s;opacity:.6;}
.nav-drop:hover .drop-arrow,.nav-drop:focus-within .drop-arrow{transform:rotate(180deg);}
.nav-drop-menu{display:none;position:absolute;top:100%;left:50%;transform:translateX(-50%);background:var(--surface);border-radius:var(--radius-md);padding:8px;min-width:max-content;box-shadow:0 12px 40px rgba(15,23,42,.12);border:1px solid var(--border);}
.nav-drop-menu::before{content:'';position:absolute;top:-8px;left:0;right:0;height:8px;}
.nav-drop:hover .nav-drop-menu,.nav-drop:focus-within .nav-drop-menu{display:block;}
.drop-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);transition:background .12s;}
.drop-item:hover{background:var(--surface-2);}
.drop-icon{font-size:18px;line-height:1;flex-shrink:0;}
.drop-label{font-size:14px;font-weight:500;color:var(--ink);white-space:nowrap;}
.nav-cta{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;font-size:14px;font-weight:600;color:#fff;background:var(--red);border-radius:var(--radius-sm);box-shadow:0 2px 6px rgba(229,41,74,.3);flex-shrink:0;}
.nav-cta:hover{opacity:.92;color:#fff;}
.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;border:none;background:transparent;cursor:pointer;border-radius:var(--radius-sm);}
.nav-toggle:hover{background:var(--surface-2);}
.nav-toggle svg{width:24px;height:24px;fill:#000;}
.nav-drawer{display:none;position:absolute;top:100%;left:0;right:0;height:calc(100dvh - var(--nav-h));background:var(--surface);z-index:199;padding:20px 24px;overflow-y:auto;border-top:1px solid var(--border);}
.nav-drawer.open{display:block;}
@media(min-width:960px){.nav-drawer{display:none!important;}}
.drawer-link{display:block;padding:13px 14px;font-size:16px;font-weight:500;border-bottom:1px solid var(--border);color:var(--ink-2);border-left:3px solid transparent;transition:border-color .15s,color .15s;}
.drawer-link:hover,.drawer-link:active{border-left-color:var(--red);color:var(--red);}
.drawer-link.active{border-left-color:var(--red);color:var(--red);font-weight:600;}
.drawer-sub-group{padding:4px 0 8px;}
.drawer-sub-label{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);padding:14px 0 8px;display:flex;align-items:center;gap:6px;}
.drawer-sub{display:flex;align-items:center;gap:10px;padding:13px 14px;font-size:15px;font-weight:500;color:var(--ink);border-bottom:1px solid var(--border);border-left:3px solid transparent;transition:border-color .15s,color .15s;}
.drawer-sub:hover,.drawer-sub:active{border-left-color:var(--red);color:var(--red);}
.drawer-sub.active{border-left-color:var(--red);color:var(--red);font-weight:600;}
.drawer-sub svg{flex-shrink:0;opacity:.55;}
.drawer-cta{display:block;margin-top:16px;text-align:center;padding:14px;background:var(--red);color:#fff;border-radius:var(--radius-sm);font-weight:600;font-size:16px;}

@media (max-width: 959px) {
  #langDropLabel { display: none; }
  .lang-drop-btn { padding: 6px 8px; }
  .nav-cta { padding: 6px 12px; font-size: 13px; }
}

/* ── Nav layout fix: prevent toggle overflow on small screens ── */
@media(max-width:959px){
  .nav-inner{overflow:visible;padding:0 12px;}
  .nav-logo{flex-shrink:0;font-size:16px;}
  .nav-logo img{width:32px;height:32px;}
  .nav-logo svg{display:none;}  /* hide "Chinesia" text on very small screens, keep logo */
  .lang-drop{flex-shrink:0;}
  .nav-cta{flex-shrink:0;padding:7px 10px;font-size:13px;}
  .nav-toggle{flex-shrink:0;width:40px;height:40px;margin-left:0;}
}
@media(max-width:360px){
  .nav-inner{padding:0 8px;gap:2px;}
  .nav-cta{padding:6px 8px;font-size:12px;}
}
/* ── Mobile nav: compact lang switcher ── */
@media(max-width:959px){
  /* nav-inner: logo | [lang-drop] | [cta] | [toggle] — three items after logo */
  .nav-inner{gap:4px;}
  /* shrink the lang drop button on mobile */
  .lang-drop-btn{padding:6px 8px;font-size:12px;gap:4px;min-width:0;}
  .lang-drop-btn .lang-full-name{display:none;}
  .lang-drop-btn .lang-short-name{display:inline;}
  /* shrink download CTA on mobile */
  .nav-cta{padding:8px 12px;font-size:13px;white-space:nowrap;}
  /* ensure toggle always visible */
  .nav-toggle{display:flex!important;flex-shrink:0;}
}
@media(min-width:960px){
  .lang-drop-btn .lang-short-name{display:none;}
  .lang-drop-btn .lang-full-name{display:inline;}
}

/* ── GEO article additions ── */
.art-content h2:first-child{margin-top:0;}
.art-content strong{color:var(--ink);font-weight:600;}
.art-key-list{list-style:none;padding-left:0;margin:0 0 18px;}
.art-key-list li{position:relative;padding-left:26px;font-size:16px;line-height:1.8;color:var(--ink-2);margin-bottom:8px;}
.art-key-list li::before{content:'';position:absolute;left:6px;top:13px;width:6px;height:6px;border-radius:50%;background:var(--red);}
.art-flow{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:24px 0;padding:20px;background:var(--surface-2);border-radius:var(--radius-lg);}
.art-flow span{display:inline-flex;align-items:center;padding:7px 14px;background:var(--surface);border:1px solid var(--border);border-radius:999px;font-size:14px;font-weight:600;color:var(--ink);}
.art-flow em{font-style:normal;color:var(--red);font-weight:700;}
.art-example{border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px 24px;margin:24px 0;background:var(--surface);}
.art-example .zh{font-size:20px;font-weight:600;color:var(--ink);line-height:1.6;margin:0 0 4px;}
.art-example .en{font-size:14px;color:var(--ink-3);margin:0 0 14px;}
.art-example > div:last-child .en{margin-bottom:0;}
.art-faq{margin:28px 0;}
.art-faq details{border-bottom:1px solid var(--border);padding:16px 0;}
.art-faq summary{cursor:pointer;font-size:16px;font-weight:600;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:12px;}
.art-faq summary::-webkit-details-marker{display:none;}
.art-faq summary::after{content:'+';color:var(--red);font-weight:700;flex-shrink:0;}
.art-faq details[open] summary::after{content:'\2212';}
.art-faq p{margin:12px 0 0;font-size:15px;line-height:1.85;color:var(--ink-2);}
.art-related{max-width:760px;margin:0 auto;padding:0 24px 80px;}
.art-related h2{font-size:clamp(1.2rem,2.5vw,1.6rem);font-weight:700;letter-spacing:-.03em;color:var(--ink);margin:0 0 20px;}
.art-related-grid{display:grid;gap:14px;}
@media(min-width:640px){.art-related-grid{grid-template-columns:repeat(3,1fr);}}
.art-related-item{display:block;padding:18px;border:1px solid var(--border);border-radius:var(--radius-md);transition:border-color .15s,transform .15s;}
.art-related-item:hover{border-color:var(--red);transform:translateY(-2px);}
.art-related-item span{display:block;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--red);margin-bottom:7px;}
.art-related-item p{margin:0;font-size:14px;font-weight:600;line-height:1.55;color:var(--ink);}