/* Blog dùng chung cho các landing page dự án. Cùng bảng màu với landing page: nền sương, xanh hồ, nút đồng thau */
:root{
  --mist:#F2F5F4; --paper:#FFFFFF; --ink:#13242B; --muted:#55666C; --line:#D5DEDD;
  --lake:#0E4F57; --lake-ink:#EAF4F3; --lake-soft:#16646D; --brass:#B07A2A; --brass-ink:#FFFFFF;
  --display:"Playfair Display", Georgia, "Times New Roman", serif;
  --body:"Be Vietnam Pro", "Segoe UI", Roboto, Arial, sans-serif;
  --r:10px; color-scheme:light;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --mist:#0D171B; --paper:#14232A; --ink:#E6EEEE; --muted:#9DB0B4; --line:#24363D;
  --lake:#0A3A40; --lake-ink:#E3F1F0; --lake-soft:#5FB3BA; --brass:#D29A45; --brass-ink:#1A1206; color-scheme:dark}}
:root[data-theme="dark"]{
  --mist:#0D171B; --paper:#14232A; --ink:#E6EEEE; --muted:#9DB0B4; --line:#24363D;
  --lake:#0A3A40; --lake-ink:#E3F1F0; --lake-soft:#5FB3BA; --brass:#D29A45; --brass-ink:#1A1206; color-scheme:dark}

*{box-sizing:border-box}
html{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{margin:0;background:var(--mist);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.7}
img{max-width:100%;height:auto}
a{color:var(--lake-soft)}
:focus-visible{outline:3px solid var(--brass);outline-offset:2px}
.wrap{max-width:1040px;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:1.25;text-wrap:balance}

.top{position:sticky;top:0;z-index:20;background:var(--paper);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-block:10px}
.brand{display:grid;line-height:1.25;text-decoration:none;color:var(--ink)}
.brand b{font-family:var(--display);font-size:1.05rem}
.brand span{font-size:.75rem;color:var(--muted)}
.top nav{display:flex;align-items:center;gap:16px;font-size:.92rem;font-weight:600}
.top nav a:not(.btn){color:var(--ink);text-decoration:none}

.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:10px 20px;font:600 .92rem var(--body);text-decoration:none;background:var(--brass);color:var(--brass-ink);border:0}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}

.crumbs{font-size:.85rem;color:var(--muted);padding-top:24px}
.crumbs a{color:var(--muted)}

.post{max-width:740px;margin:0 auto;padding-bottom:48px}
.post-head h1{font-size:clamp(1.8rem,4.6vw,2.6rem);margin:12px 0 8px}
.meta{color:var(--muted);font-size:.88rem;margin:0 0 20px}
.cover{margin:0 0 28px}
.cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r);display:block;background:var(--line)}
.cover figcaption{font-size:.78rem;color:var(--muted);margin-top:6px}
.prose h2{font-size:1.5rem;margin:36px 0 10px}
.prose h3{font-size:1.15rem;font-family:var(--body);margin:24px 0 6px}
.prose p,.prose li{max-width:68ch}
.prose ul,.prose ol{padding-left:1.25em}
.prose strong{color:var(--ink)}
.prose .lead{font-size:1.1rem;color:var(--muted)}
.prose figure{margin:24px 0}
.prose figure img{border-radius:var(--r);display:block}
.prose figcaption{font-size:.78rem;color:var(--muted);margin-top:6px}
.table{overflow-x:auto;margin:16px 0}
.table table{width:100%;border-collapse:collapse;background:var(--paper);border-radius:var(--r);overflow:hidden;font-size:.95rem;font-variant-numeric:tabular-nums}
.table th,.table td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.table th{font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.table tr:last-child td{border-bottom:0}
.table table.wide{min-width:600px}
.table table.wide td{white-space:nowrap}
.note{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:14px 18px;font-size:.92rem;color:var(--muted)}

.cta{margin:40px 0 0;background:var(--lake);color:var(--lake-ink);border-radius:14px;padding:24px;display:grid;gap:10px}
.cta b{font-family:var(--display);font-size:1.3rem;line-height:1.3}
.cta p{margin:0;opacity:.85}
.cta .row{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
.cta .btn.ghost{color:var(--lake-ink);border-color:color-mix(in srgb,var(--lake-ink) 40%,transparent)}

.related{margin-top:40px}
.related h2{font-size:1.25rem}
.related ul{padding-left:1.2em}
.related li{margin:6px 0}

.list-head{max-width:740px;padding-block:8px 8px}
.list-head h1{font-size:clamp(1.8rem,4.6vw,2.6rem);margin:12px 0 6px}
.list-head p{color:var(--muted);margin:0}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:28px 0 8px}
.card{display:grid;grid-template-rows:auto 1fr;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;text-decoration:none;color:var(--ink)}
.card:hover{border-color:var(--lake-soft)}
.card img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;background:var(--line)}
.card div{padding:16px 18px;display:grid;gap:6px;align-content:start}
.card h2{font-size:1.15rem;margin:0}
.card p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.55}
.card span{font-size:.88rem;font-weight:600;color:var(--lake-soft)}

footer{border-top:1px solid var(--line);margin-top:48px;padding-block:24px 110px;font-size:.78rem;color:var(--muted)}
footer .wrap{display:grid;gap:6px}
.dock{display:none}
@media (max-width:760px){
  body{font-size:16px}
  .cards{grid-template-columns:1fr}
  .top nav .btn{display:none}
  .dock{display:flex;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:30;background:var(--paper);border-top:1px solid var(--line);
    padding:10px max(16px,env(safe-area-inset-right,0px)) calc(10px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
  .dock .btn{flex:1;padding-block:13px}
}