/* Khung dùng chung cho trang phụ — hệ thiết kế timmachbenbi.com */
:root{
  --red:#C41E2F;--red-d:#A01825;--navy:#0B2545;
  --ground:#ECEDEF;--page:#FFF;--surface:#FFF;--surface-2:#EEF2F8;
  --ink:#1B2430;--ink-2:#3F4855;--ink-3:#8A93A0;
  --rule:#E3E6EA;--rule-strong:#CBD2DB;
  --amber:#C41E2F;--amber-soft:#FCEEEF;--on-amber:#FFF;
  --shadow:0 2px 10px rgba(11,37,69,.06)
}
*{box-sizing:border-box}
body{margin:0;background:var(--ground);color:var(--ink);padding-inline:12px;
  font-family:Inter,"Segoe UI",system-ui,sans-serif;font-size:17.5px;line-height:1.75;
  -webkit-font-smoothing:antialiased}
.topbar{background:var(--navy);color:#fff;padding:12px 20px;margin-inline:-12px}
.topbar div{max-width:680px;margin:0 auto;font-family:'Playfair Display',Georgia,serif;
  font-weight:700;font-size:17px}
.wrap{max-width:680px;margin:18px auto;background:var(--page);padding:26px 22px 30px;
  border:1px solid #DDE0E4;border-radius:8px;box-shadow:var(--shadow)}
p{margin:0 0 14px;color:var(--ink-2)}
a{color:var(--red);text-underline-offset:3px}
a:focus-visible{outline:3px solid var(--navy);outline-offset:2px;border-radius:3px}
.ve{display:inline-block;margin:30px 0 0;font-size:16px;font-weight:600;text-decoration:none}
header.top{padding:0 0 4px;margin-bottom:20px}
h1,h2,h3{font-family:'Playfair Display',Georgia,serif;font-weight:700;text-wrap:balance;margin:0}
h1{font-size:30px;line-height:1.3;margin:0 0 14px}
h2{font-size:24px;line-height:1.35;margin:40px 0 16px}
h3{font-size:19px;line-height:1.4;margin:22px 0 10px}
.dan{font-size:18px;line-height:1.65;color:var(--ink);font-style:italic;margin:0 0 16px}
.luu{background:var(--amber-soft);border-left:4px solid var(--red);border-radius:0 8px 8px 0;
  padding:18px 18px;margin:0 0 22px;font-size:17px;color:var(--ink-2)}
.luu b{color:var(--ink)}
footer.bottom{margin-top:40px;padding-top:24px;border-top:1px solid var(--rule);
  font-size:13px;color:var(--ink-3);line-height:1.6}
footer.bottom p{margin-bottom:8px}
@media(max-width:480px){.wrap{padding:20px 16px 24px;margin:12px auto}
  h1{font-size:25px}h2{font-size:22px}h3{font-size:18px}}