/* Shared styles for app legal pages (privacy policy, terms…) */
@font-face{font-family:'Clash Display';src:url('/fonts/ClashDisplay-600.woff2') format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:'Clash Display';src:url('/fonts/ClashDisplay-700.woff2') format('woff2');font-weight:700;font-display:swap}
:root{
  --bg:#fffbeb;--bg-alt:#fff3cc;--card:#fffdf5;--ink:#161200;--ink-soft:#4d3e00;--muted:#6e6f78;
  --line:rgba(22,18,0,.12);--red:#ff4f3f;--orange:#faa533;--navy:#001726;--blue:#3ba5ef;
  --font-body:-apple-system,BlinkMacSystemFont,"SF Pro Text","Be Vietnam Pro","Segoe UI",Roboto,sans-serif;
  --font-head:"Be Vietnam Pro",-apple-system,BlinkMacSystemFont,sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){--bg:#14110a;--bg-alt:#1e1a10;--card:#1a160d;--ink:#fbf4dc;--ink-soft:#e2d6ad;--muted:#a9a59a;--line:rgba(251,244,220,.14)}
}
:root[data-theme="dark"]{--bg:#14110a;--bg-alt:#1e1a10;--card:#1a160d;--ink:#fbf4dc;--ink-soft:#e2d6ad;--muted:#a9a59a;--line:rgba(251,244,220,.14)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:90px;-webkit-tap-highlight-color:transparent}
body{font-family:var(--font-body);background:var(--bg);color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--red);text-underline-offset:3px}
:focus-visible{outline:3px solid var(--red);outline-offset:3px;border-radius:8px}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px}

/* header */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.top .logo img{height:38px;width:auto;display:block}
.lang{display:inline-flex;border:2px solid var(--ink);border-radius:999px;padding:3px;gap:2px}
.lang button{border:0;background:none;color:var(--ink);font:700 13px var(--font-body);padding:7px 14px;border-radius:999px;cursor:pointer;transition:background-color .2s,color .2s}
.lang button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}

/* hero */
.hero{padding:56px 0 36px}
.app-badge{display:inline-flex;align-items:center;gap:12px;margin-bottom:22px}
.app-icon{width:56px;height:56px;border-radius:16px;display:grid;place-items:center;font:700 14px 'Clash Display',var(--font-head);letter-spacing:.3px;color:#fff;background:linear-gradient(140deg,var(--orange),var(--red));box-shadow:3px 3px 0 var(--ink)}
.app-badge b{display:block;font-family:var(--font-head);font-size:18px}
.app-badge span{font-size:14px;color:var(--muted)}
.hero h1{font-family:var(--font-head);font-weight:800;font-size:clamp(34px,5vw,58px);line-height:1.08;letter-spacing:-1.5px}
.meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.meta span{font-size:14px;font-weight:600;padding:6px 14px;border-radius:999px;background:var(--bg-alt);border:1px solid var(--line);color:var(--ink-soft)}

/* summary box */
.tldr{background:var(--navy);color:#fffbeb;border-radius:24px;padding:28px 32px;margin-bottom:40px}
.tldr h2{font-family:var(--font-head);font-size:20px;margin-bottom:12px;color:var(--orange)}
.tldr ul{list-style:none;display:grid;gap:8px}
.tldr li{padding-left:28px;position:relative}
.tldr li::before{content:"✓";position:absolute;left:0;color:var(--orange);font-weight:800}

/* layout */
.layout{display:grid;grid-template-columns:240px 1fr;gap:56px;padding-bottom:80px}
.layout>*{min-width:0}
.toc{position:sticky;top:96px;align-self:start;font-size:14px}
.toc b{display:block;font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.toc ol{list-style:none;counter-reset:t;display:grid;gap:2px;border-left:2px solid var(--line)}
.toc a{display:block;padding:6px 0 6px 14px;margin-left:-2px;border-left:2px solid transparent;color:var(--ink-soft);text-decoration:none;transition:color .2s,border-color .2s}
.toc a:hover{color:var(--ink)}
.toc a.active{color:var(--red);border-left-color:var(--red);font-weight:700}
article section{padding:8px 0 28px;border-bottom:1px solid var(--line);margin-bottom:28px}
article section:last-child{border-bottom:0}
article h2{font-family:var(--font-head);font-size:clamp(22px,2.4vw,28px);line-height:1.25;letter-spacing:-.5px;margin-bottom:14px;display:flex;gap:12px;align-items:baseline}
article h2 .n{font:700 .8em 'Clash Display',var(--font-head);color:var(--orange);min-width:1.6em}
article h3{font-family:var(--font-head);font-size:18px;margin:18px 0 8px}
article p,article li{color:var(--ink-soft);font-size:16.5px}
article p+p{margin-top:12px}
article ul{margin:10px 0 0 22px;display:grid;gap:6px}
.table-wrap{overflow-x:auto;margin-top:14px;border:1px solid var(--line);border-radius:16px}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-soft)}
th{background:var(--bg-alt);color:var(--ink);font-weight:700}
tr:last-child td{border-bottom:0}
.contact-card{background:var(--bg-alt);border:2px solid var(--ink);border-radius:20px;padding:22px 24px;margin-top:14px;box-shadow:5px 5px 0 var(--ink)}
.contact-card p{margin:0}

footer{border-top:1px solid var(--line);padding:28px 0 40px;font-size:14px;color:var(--muted)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
footer a{color:inherit}

/* language switching */
html[data-lang="vi"] [lang="en"]:not(html),html[data-lang="en"] [lang="vi"]:not(html){display:none!important}

@media (max-width:860px){
  .layout{grid-template-columns:1fr;gap:0}
  .toc{position:static;margin-bottom:32px;padding:18px 20px;background:var(--bg-alt);border-radius:18px}
  .toc ol{border-left:0}
  .toc a{padding:5px 0;border-left:0}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .tldr{padding:22px 20px;border-radius:20px}
  .top .logo img{height:32px;width:auto}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* site (non-app) badge + inline code */
.app-icon.site{background:var(--card);border:2px solid var(--ink);box-shadow:3px 3px 0 var(--ink);padding:6px}
.app-icon.site img{width:100%;height:auto;display:block}
article code{font:600 .9em ui-monospace,Menlo,Consolas,monospace;background:var(--bg-alt);border:1px solid var(--line);border-radius:6px;padding:1px 6px;color:var(--ink)}
footer .foot-links a{margin:0 2px}
.app-icon.thpt{background:linear-gradient(140deg,var(--blue),#1f5fbf)}