/* Shared styles for /bai-viet/ and /en/articles/ (generated by scripts/articles/build.py). */
:root{
  --ink:#0f1730; --ink-dim:#5b6480; --bg:#f5f6fb; --surface:#ffffff; --surface-2:#eef0f9;
  --border:#e2e5f2; --accent:#2952e3; --accent-soft:#e8edff; --green:#1fa971;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --ink:#eef1fb; --ink-dim:#9aa3c4; --bg:#080b18; --surface:#111830; --surface-2:#161e3b;
    --border:#232c52; --accent:#7c9bff; --accent-soft:#161f45; --green:#39c98d;
  }
}
:root[data-theme="dark"]{
  --ink:#eef1fb; --ink-dim:#9aa3c4; --bg:#080b18; --surface:#111830; --surface-2:#161e3b;
  --border:#232c52; --accent:#7c9bff; --accent-soft:#161f45; --green:#39c98d;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:'Be Vietnam Pro',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;-webkit-font-smoothing:antialiased;line-height:1.7}
h1,h2,h3{font-family:'Sora','Be Vietnam Pro',sans-serif;line-height:1.3}
img{max-width:100%;display:block}
a{color:var(--accent)}
.container{max-width:1100px;margin:0 auto;padding:0 16px}

header.site{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-family:'Sora',sans-serif}
.brand img{width:34px;height:34px;border-radius:9px}
.header-nav{display:flex;gap:16px;align-items:center;font-size:14px;font-weight:600}
.header-nav a{text-decoration:none;color:var(--ink-dim)}
.header-nav a:hover{color:var(--accent)}
.lang-link{border:1px solid var(--border);border-radius:999px;padding:4px 12px}

.article{max-width:760px;padding-top:28px;padding-bottom:40px}
.crumbs{font-size:13.5px;color:var(--ink-dim)}
.crumbs a{color:var(--ink-dim);text-decoration:none}
.article h1{font-size:clamp(28px,5vw,40px);margin:14px 0 6px}
.meta{color:var(--ink-dim);font-size:13.5px;margin:0 0 22px}
.summary{background:var(--accent-soft);border-left:4px solid var(--accent);border-radius:10px;padding:16px 18px;margin-bottom:28px}
.article h2{font-size:clamp(21px,3.4vw,26px);margin:36px 0 10px}
.article h3{font-size:18px;margin:24px 0 6px}
.article p,.article li{font-size:16.5px}
.article li{margin:4px 0}
.article table{width:100%;border-collapse:collapse;margin:16px 0;font-size:15px;display:block;overflow-x:auto}
.article th,.article td{border:1px solid var(--border);padding:9px 12px;text-align:left;vertical-align:top}
.article th{background:var(--surface-2)}
.article blockquote{margin:16px 0;padding:12px 18px;background:var(--surface);border:1px solid var(--border);border-radius:10px;font-style:italic}
.tip{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 18px;margin:18px 0}

.cta{display:flex;gap:18px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:22px;margin:40px 0 10px}
.cta > img{width:64px;height:64px;border-radius:16px;flex:none}
.cta h2{margin:0 0 6px;font-size:20px}
.cta p{margin:0 0 14px;color:var(--ink-dim);font-size:15px}
.stores{display:flex;gap:10px;flex-wrap:wrap}
.stores img{height:46px;width:auto}
@media (max-width:520px){.cta{flex-direction:column}}

.related h2{font-size:20px;margin:32px 0 8px}
.related ul{padding-left:20px}

.index-head{max-width:760px;padding:36px 0 8px}
.index-head h1{font-size:clamp(30px,5vw,44px);margin:0 0 10px}
.index-head p{color:var(--ink-dim);font-size:17px;margin:0}
.cards{list-style:none;padding:0;margin:24px 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.card{display:flex;flex-direction:column;height:100%;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px;text-decoration:none;color:var(--ink);transition:transform .15s,border-color .15s}
.card:hover{transform:translateY(-3px);border-color:var(--accent)}
.card h2{font-size:18px;margin:0 0 8px}
.card p{color:var(--ink-dim);font-size:14.5px;margin:0 0 12px;flex:1;line-height:1.6}
.card span{color:var(--accent);font-weight:700;font-size:14px}

footer{border-top:1px solid var(--border);padding:26px 0;margin-top:30px;font-size:14px;color:var(--ink-dim)}
.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink);font-weight:700}
.footer-brand img{width:24px;height:24px;border-radius:6px}
.footer-links{display:flex;gap:16px;flex-wrap:wrap}
.footer-links a{color:var(--ink-dim);text-decoration:none}
.footer-copy{margin-top:12px;font-size:12.5px}