/* Chốt Xe – kiểu chung cho trang giới thiệu, đăng nhập, chính sách
   Bố cục: một cột nội dung rộng tối đa 1120px, các dải màu chạy hết chiều ngang */
:root{
  --ink:#0d2238; --ink-2:#1c3a5c; --gold:#c9a45c; --gold-2:#e8cf95;
  --bg:#f4f6f9; --surface:#ffffff; --fg:#14202e; --muted:#5b6878; --line:#dde3ea;
  --good:#15803d; --bad:#b42318;
  --display:"Be Vietnam Pro",-apple-system,"Segoe UI",Roboto,sans-serif;
  --body:"Be Vietnam Pro",-apple-system,"Segoe UI",Roboto,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0b1420;--surface:#122031;--fg:#e7edf4;--muted:#9aa9ba;--line:#24364b;--ink:#0a1828;--ink-2:#1c3a5c;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#0b1420;--surface:#122031;--fg:#e7edf4;--muted:#9aa9ba;--line:#24364b;--ink:#0a1828;--ink-2:#1c3a5c;color-scheme:dark}
*{box-sizing:border-box}
:root{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.6 var(--body)}
img{max-width:100%;height:auto}
a{color:inherit}
.wrap{max-width:1120px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--display);line-height:1.18;text-wrap:balance;margin:0}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--gold)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:700 15px/1 var(--body);padding:14px 22px;border-radius:12px;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:transform .15s,box-shadow .15s}
.btn:focus-visible,input:focus-visible,button:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.btn-gold{background:linear-gradient(180deg,var(--gold-2),var(--gold));color:#2a1d05;box-shadow:0 10px 22px -12px rgba(201,164,92,.9)}
.btn-gold:hover{transform:translateY(-1px)}
.btn-line{border-color:rgba(255,255,255,.35);color:#fff;background:transparent}
.btn-ghost{border-color:var(--line);background:var(--surface);color:var(--fg)}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
/* thanh trên */
.top{background:var(--ink);color:#fff}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-block:14px}
.logo{display:flex;align-items:center;gap:10px;font:800 19px/1 var(--display);text-decoration:none;color:#fff}
.logo i{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--gold-2),var(--gold));display:grid;place-items:center;color:#2a1d05;font-style:normal;font-size:15px}
.top nav{display:flex;gap:18px;align-items:center;font-size:14px;font-weight:600}
.top nav a{text-decoration:none;opacity:.85}.top nav a:hover{opacity:1}
@media (max-width:640px){.top nav .hide-s{display:none}}
/* chân trang */
.foot{border-top:1px solid var(--line);color:var(--muted);font-size:13px}
.foot .wrap{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;padding-block:22px}
.foot a{text-decoration:none}.foot a:hover{text-decoration:underline}
/* trang văn bản */
.doc{max-width:760px;margin:0 auto;padding-block:36px 56px}
.doc h1{font-size:28px;margin-bottom:6px}.doc h2{font-size:18px;margin:28px 0 8px}
.doc p,.doc li{color:var(--fg)}.doc .meta{color:var(--muted);font-size:13px}
.doc .draft{background:#fff7e6;color:#7a4b00;border:1px solid #f2d79b;padding:10px 14px;border-radius:10px;font-size:13.5px}