:root {
  --bg: #faf7f1;
  --bg-alt: #f3ece0;
  --card: #ffffff;
  --ink: #2b1b10;
  --ink-2: #5b4636;
  --muted: #8a7766;
  --line: #e6dccb;
  --line-2: #d8c9b2;
  --brand: #b0763a;
  --brand-2: #8f5a26;
  --brand-ink: #ffffff;
  --brand-soft: #f5e6d1;
  --ok: #2f8a3e;
  --ok-soft: #e3f3e5;
  --warn: #b25d12;
  --danger: #c0392b;
  --info: #2c6fb0;
  --info-soft: #e2edf8;
  --zalo: #0068ff;
  --mock: #3b2a1e;
  --mock-2: #4a3727;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(59,42,30,.06), 0 8px 24px -12px rgba(59,42,30,.18);
  --shadow-lg: 0 30px 60px -24px rgba(59,42,30,.45);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15100b;
    --bg-alt: #1c150f;
    --card: #221912;
    --ink: #f3e9dc;
    --ink-2: #d4c3ae;
    --muted: #a08d78;
    --line: #372a1f;
    --line-2: #4a3a2b;
    --brand: #dba36a;
    --brand-2: #e8b988;
    --brand-ink: #1b120b;
    --brand-soft: #362617;
    --ok: #6ccf7c;
    --ok-soft: #1c3321;
    --warn: #f0a35c;
    --danger: #ef7b6e;
    --info: #7fb4ea;
    --info-soft: #172a3d;
    --mock: #0f0b08;
    --mock-2: #1c150f;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px -12px rgba(0,0,0,.6);
    --shadow-lg: 0 30px 60px -24px rgba(0,0,0,.8);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.65 "Be Vietnam Pro", "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: var(--brand); }
img { max-width: 100%; }
code { font-family: Consolas, ui-monospace, monospace; background: var(--brand-soft); padding: 1px 6px; border-radius: 5px; font-size: .9em; overflow-wrap: anywhere; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- header ---------- */
.top { position: sticky; top: 0; z-index: 30; background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid transparent; transition: border-color .2s, box-shadow .2s; }
.top.scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 20px -16px rgba(0,0,0,.35); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 66px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 21px; color: var(--ink); text-decoration: none; letter-spacing: -.02em; }
.brand small { font-weight: 600; font-size: 11px; color: var(--brand); border: 1px solid var(--line-2); border-radius: 99px; padding: 1px 8px; letter-spacing: .02em; }
.menu { display: flex; align-items: center; gap: 6px; }
.menu a { color: var(--ink-2); text-decoration: none; font-weight: 500; font-size: 15px; padding: 8px 12px; border-radius: 9px; }
.menu a:hover { color: var(--ink); background: var(--brand-soft); }
.menu a.active { color: var(--ink); background: var(--brand-soft); }
.menu .btn { margin-left: 6px; }
.burger { display: none; background: none; border: 1px solid var(--line-2); border-radius: 10px; width: 42px; height: 40px; color: var(--ink); font-size: 20px; cursor: pointer; }

/* ---------- buttons / badges ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; background: var(--brand); color: var(--brand-ink) !important; padding: 12px 22px; border-radius: 11px; font: inherit; font-weight: 600; text-decoration: none; border: 1px solid transparent; cursor: pointer; transition: transform .15s, filter .15s, box-shadow .15s; box-shadow: 0 6px 18px -8px color-mix(in srgb, var(--brand) 70%, transparent); }
.btn:hover { filter: brightness(1.07); transform: translateY(-1px); }
.btn:disabled { opacity: .6; cursor: default; transform: none; }
.btn-sm { padding: 7px 14px; font-size: 14px; border-radius: 9px; }
.btn-xs { padding: 4px 10px; font-size: 13px; border-radius: 8px; box-shadow: none; }
.btn-ghost { background: transparent; color: var(--ink) !important; border-color: var(--line-2); box-shadow: none; }
.btn-ghost:hover { background: var(--brand-soft); }
.btn-zalo { background: var(--zalo); color: #fff !important; box-shadow: 0 6px 18px -8px rgba(0,104,255,.7); }
.btn-danger { background: var(--danger); color: #fff !important; box-shadow: none; }
.badge { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 99px; background: var(--brand-soft); color: var(--brand-2); white-space: nowrap; }
.badge.b-cap-nhat { background: var(--ok-soft); color: var(--ok); }
.badge.b-huong-dan { background: var(--info-soft); color: var(--info); }
.badge.b-thong-bao { background: var(--brand-soft); color: var(--brand-2); }
.badge.b-hoi-dap, .badge.b-gop-y { background: color-mix(in srgb, var(--muted) 16%, transparent); color: var(--ink-2); }
.badge.ver { background: var(--mock); color: #f3e9dc; font-family: Consolas, monospace; font-weight: 500; }
.badge.admin { background: var(--brand); color: var(--brand-ink); }
.badge.warn { background: color-mix(in srgb, var(--warn) 18%, transparent); color: var(--warn); }

/* ---------- hero ---------- */
.hero { position: relative; padding: 84px 0 76px; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(var(--line-2) 1px, transparent 1px); background-size: 22px 22px; mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%); opacity: .7; pointer-events: none; }
.hero::after { content: ""; position: absolute; width: 620px; height: 620px; right: -140px; top: -180px; background: radial-gradient(circle, color-mix(in srgb, var(--brand) 32%, transparent), transparent 65%); filter: blur(10px); pointer-events: none; }
.hero .wrap { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.pill { display: inline-flex; align-items: center; gap: 8px; background: var(--card); border: 1px solid var(--line); border-radius: 99px; padding: 5px 14px 5px 6px; font-size: 14px; color: var(--ink-2); text-decoration: none; box-shadow: var(--shadow); margin-bottom: 20px; }
.pill b { background: var(--brand); color: var(--brand-ink); border-radius: 99px; padding: 1px 9px; font-size: 12px; }
h1 { font-size: clamp(36px, 5.4vw, 60px); line-height: 1.08; letter-spacing: -.035em; margin: 0 0 20px; font-weight: 800; }
.hl { background: linear-gradient(100deg, var(--brand), #d9913f 60%, var(--brand-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 18.5px; color: var(--ink-2); margin: 0 0 30px; max-width: 34em; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.trust { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 30px; color: var(--muted); font-size: 14px; }
.trust span::before { content: "✓ "; color: var(--ok); font-weight: 700; }

/* mock window */
.mock { position: relative; background: var(--mock); border-radius: 18px; box-shadow: var(--shadow-lg); overflow: hidden; color: #f3e9dc; font-size: 14px; transform: perspective(1400px) rotateY(-6deg) rotateX(2deg); transition: transform .5s; border: 1px solid rgba(255,255,255,.06); }
.mock:hover { transform: none; }
.mock-bar { display: flex; align-items: center; gap: 7px; padding: 12px 14px; background: var(--mock-2); }
.mock-bar i { width: 11px; height: 11px; border-radius: 50%; background: #6b5543; }
.mock-bar i:nth-child(1) { background: #e0685a; } .mock-bar i:nth-child(2) { background: #e3b34f; } .mock-bar i:nth-child(3) { background: #62c26f; }
.mock-bar span { margin-left: 8px; color: #bfae9a; font-size: 13px; }
.mock-body { padding: 18px; }
.mock-tabs { display: flex; gap: 6px; margin-bottom: 14px; }
.mock-tabs span { padding: 6px 14px; border-radius: 8px 8px 0 0; background: #4a3727; color: #bfae9a; }
.mock-tabs .on { background: #d2b48c; color: #2b1b10; font-weight: 600; }
.mock-status { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 14px; }
.mock-status div { background: #4a3727; border-radius: 8px; padding: 8px 10px; display: flex; flex-direction: column; min-width: 0; }
.mock-status em { font-style: normal; color: #bfae9a; font-size: 12px; }
.mock-status .ok { color: #8fe39b; }
.mock-btns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 14px; }
.mock-btns span { background: #d2b48c; color: #2b1b10; border-radius: 8px; padding: 10px 6px; text-align: center; font-weight: 600; font-size: 13px; transition: background .2s, transform .2s; }
.mock-btns span.hot { background: #f0c98f; transform: translateY(-2px); box-shadow: 0 0 0 2px #f3e9dc55; }
.mock-log { background: #0f0b08; border-radius: 8px; padding: 10px 12px; font-family: Consolas, monospace; font-size: 12.5px; color: #9fd8a6; line-height: 1.7; min-height: 104px; }
.mock-log .dim { color: #7c6c5b; }
.caret { display: inline-block; width: 7px; height: 14px; background: #9fd8a6; vertical-align: -2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- stats band ---------- */
.band { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--card); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); }
.stats div { padding: 26px 20px; text-align: center; border-left: 1px solid var(--line); }
.stats div:first-child { border-left: 0; }
.stats b { display: block; font-size: 30px; letter-spacing: -.02em; line-height: 1.2; }
.stats span { color: var(--muted); font-size: 14px; }

/* ---------- sections ---------- */
.section { padding: 88px 0; }
.section.alt { background: var(--bg-alt); }
.kicker { color: var(--brand); font-weight: 700; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; margin: 0 0 10px; }
h2 { font-size: clamp(27px, 3.6vw, 40px); letter-spacing: -.025em; margin: 0 0 12px; line-height: 1.18; }
.sub { color: var(--ink-2); font-size: 17px; margin: 0 0 40px; max-width: 44em; }
.head-row { display: flex; align-items: end; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 36px; }
.head-row .sub { margin-bottom: 0; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); min-width: 0; }
.card h3 { margin: 14px 0 8px; font-size: 18px; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--ink-2); font-size: 15px; }
.feat { transition: transform .2s, border-color .2s; }
.feat:hover { transform: translateY(-3px); border-color: var(--line-2); }
.ic { font-size: 24px; width: 50px; height: 50px; display: grid; place-items: center; background: var(--brand-soft); border-radius: 13px; }
.feat ul { margin: 12px 0 0; padding: 0; list-style: none; font-size: 14px; color: var(--muted); }
.feat li::before { content: "— "; color: var(--brand); }

.two { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.two > * { min-width: 0; }
.steps { list-style: none; counter-reset: s; padding: 0; margin: 0; display: grid; gap: 14px; }
.steps li { counter-increment: s; position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px 18px 72px; display: flex; flex-direction: column; box-shadow: var(--shadow); }
.steps li::before { content: counter(s); position: absolute; left: 20px; top: 18px; width: 36px; height: 36px; border-radius: 50%; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-weight: 700; }
.steps span { color: var(--ink-2); font-size: 15px; }

/* updates on home */
.updates { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.upd { display: flex; flex-direction: column; gap: 10px; text-decoration: none; color: var(--ink); transition: transform .2s, border-color .2s; }
.upd:hover { transform: translateY(-3px); border-color: var(--brand); }
.upd h3 { margin: 0; font-size: 17px; line-height: 1.35; }
.upd p { font-size: 14.5px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.upd .meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.skeleton { background: linear-gradient(90deg, var(--line) 0%, var(--bg-alt) 50%, var(--line) 100%); background-size: 200% 100%; animation: sk 1.3s infinite; border-radius: 8px; }
@keyframes sk { to { background-position: -200% 0; } }

/* license */
.lic { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.lic .n { font-size: 13px; font-weight: 700; color: var(--brand); letter-spacing: .06em; }
.lic h3 { margin-top: 6px; }
.note { color: var(--muted); font-size: 14px; margin: 20px 0 0; }

/* faq */
.faq { max-width: 820px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 10px; box-shadow: var(--shadow); }
.faq summary { cursor: pointer; padding: 16px 20px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--brand); font-size: 22px; line-height: 1; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0; padding: 0 20px 18px; color: var(--ink-2); }

/* contact */
.contact-box { position: relative; overflow: hidden; background: var(--mock); color: #f3e9dc; border-radius: 22px; padding: 52px; display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; box-shadow: var(--shadow-lg); }
.contact-box::after { content: ""; position: absolute; width: 420px; height: 420px; right: -120px; bottom: -200px; background: radial-gradient(circle, rgba(219,163,106,.45), transparent 65%); pointer-events: none; }
.contact-box h2 { color: #fff; }
.contact-box p { color: #d4c3ae; margin: 0; }
.contact-list { display: grid; gap: 12px; position: relative; z-index: 1; }
.cc { display: flex; align-items: center; gap: 14px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); border-radius: 14px; padding: 14px 18px; color: #fff; text-decoration: none; transition: background .2s, transform .2s; min-width: 0; }
.cc:hover { background: rgba(255,255,255,.12); transform: translateX(3px); }
.cc .ci { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; font-weight: 800; flex: none; }
.cc .ci.z { background: var(--zalo); font-size: 13px; }
.cc .ci.e { background: #d2b48c; color: #2b1b10; font-size: 20px; }
.cc em { display: block; font-style: normal; font-size: 13px; color: #bfae9a; }
.cc b { font-size: 17px; overflow-wrap: anywhere; }

/* floating zalo */
.fab { position: fixed; right: 18px; bottom: 18px; z-index: 40; display: flex; align-items: center; gap: 10px; background: var(--zalo); color: #fff; text-decoration: none; font-weight: 700; padding: 10px 16px 10px 10px; border-radius: 99px; box-shadow: 0 10px 28px -8px rgba(0,104,255,.7); transition: transform .2s; }
.fab:hover { transform: translateY(-2px); }
.fab i { width: 34px; height: 34px; background: #fff; color: var(--zalo); border-radius: 50%; display: grid; place-items: center; font-style: normal; font-size: 12px; font-weight: 800; }

/* footer */
.foot { border-top: 1px solid var(--line); padding: 40px 0 90px; color: var(--muted); font-size: 14px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; }
.foot h4 { color: var(--ink); margin: 0 0 10px; font-size: 14px; }
.foot a { color: var(--ink-2); text-decoration: none; display: block; padding: 3px 0; }
.foot a:hover { color: var(--brand); }
.foot .copy { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line); }

/* reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } .mock { transform: none; } html { scroll-behavior: auto; } }

/* ---------- forum ---------- */
.page-head { padding: 48px 0 28px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, var(--bg-alt), var(--bg)); }
.page-head h1 { font-size: clamp(30px, 4vw, 42px); margin-bottom: 8px; }
.page-head p { margin: 0; color: var(--ink-2); }
.crumbs { font-size: 14px; color: var(--muted); margin-bottom: 12px; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--brand); }
.forum { display: grid; grid-template-columns: 250px 1fr; gap: 28px; padding: 32px 0 70px; }
.forum > * { min-width: 0; }
.side { position: sticky; top: 86px; align-self: start; display: grid; gap: 16px; }
.cats { display: grid; gap: 2px; }
.cats a { display: flex; justify-content: space-between; align-items: center; padding: 9px 12px; border-radius: 10px; color: var(--ink-2); text-decoration: none; font-weight: 500; }
.cats a:hover { background: var(--brand-soft); color: var(--ink); }
.cats a.on { background: var(--brand); color: var(--brand-ink); }
.cats a small { font-size: 11px; opacity: .75; }
.side .card { padding: 16px; }
.side h4 { margin: 0 0 8px; font-size: 14px; }
.toolbar { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.search { flex: 1; min-width: 200px; position: relative; }
.search input[type=search] { width: 100%; padding-left: 38px; }
.search::before { content: "⌕"; position: absolute; left: 13px; top: 50%; transform: translateY(-52%); color: var(--muted); font-size: 20px; }
.topics { display: grid; gap: 10px; }
.topic { display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: center; padding: 16px 20px; text-decoration: none; color: var(--ink); transition: border-color .2s, transform .15s; }
.topic:hover { border-color: var(--brand); }
.topic h3 { margin: 6px 0 4px; font-size: 17px; line-height: 1.4; overflow-wrap: anywhere; }
.topic .ex { color: var(--muted); font-size: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; overflow-wrap: anywhere; }
.topic .meta { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; font-size: 13px; color: var(--muted); }
.topic .nums { display: flex; gap: 16px; text-align: center; color: var(--muted); font-size: 12px; }
.topic .nums b { display: block; color: var(--ink); font-size: 17px; }
.topic.pinned { border-color: color-mix(in srgb, var(--brand) 45%, var(--line)); background: color-mix(in srgb, var(--brand-soft) 45%, var(--card)); }
.empty { text-align: center; padding: 50px 20px; color: var(--muted); }
.pager { display: flex; gap: 8px; justify-content: center; margin-top: 22px; }

/* topic page */
.post { padding: 30px 34px; }
.post-head { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.post h1 { font-size: clamp(26px, 3.4vw, 36px); margin-bottom: 14px; overflow-wrap: anywhere; }
.author { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--muted); padding-bottom: 18px; margin-bottom: 22px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.av { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; color: #fff; flex: none; font-size: 15px; }
.author b { color: var(--ink); }
.prose { font-size: 16.5px; line-height: 1.75; overflow-wrap: anywhere; }
.prose h2 { font-size: 24px; margin: 30px 0 10px; }
.prose h3 { font-size: 19px; margin: 24px 0 8px; }
.prose p { margin: 0 0 14px; }
.prose ul, .prose ol { padding-left: 24px; margin: 0 0 14px; }
.prose li { margin: 4px 0; }
.prose img { border-radius: 10px; border: 1px solid var(--line); }
.prose pre { background: var(--mock); color: #f3e9dc; padding: 14px 16px; border-radius: 10px; overflow-x: auto; font-size: 14px; }
.prose pre code { background: none; padding: 0; color: inherit; }
.prose blockquote { margin: 0 0 14px; padding: 10px 16px; border-left: 4px solid var(--brand); background: var(--brand-soft); border-radius: 0 10px 10px 0; }
.prose table { border-collapse: collapse; width: 100%; margin: 0 0 14px; font-size: 15px; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--line); padding: 7px 10px; text-align: left; }
.prose th { background: var(--bg-alt); }
.plain { white-space: pre-wrap; }
.comments { margin-top: 26px; }
.comments h2 { font-size: 22px; }
.cmt { display: grid; grid-template-columns: 38px 1fr; gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.cmt:last-child { border-bottom: 0; }
.cmt .who { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 14px; color: var(--muted); margin-bottom: 4px; }
.cmt .who b { color: var(--ink); }
.cmt .txt { white-space: pre-wrap; overflow-wrap: anywhere; color: var(--ink-2); }
.cmt.admin .txt { color: var(--ink); }
.cmt.hid { opacity: .5; }

/* forms */
.form { display: grid; gap: 14px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
label.f { display: grid; gap: 6px; font-size: 14px; font-weight: 600; color: var(--ink-2); }
input[type=text], input[type=search], input[type=password], select, textarea {
  font: inherit; font-size: 15px; color: var(--ink); background: var(--card); border: 1px solid var(--line-2); border-radius: 10px; padding: 10px 12px; width: 100%; outline: none; transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--brand); box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 22%, transparent); }
textarea { min-height: 140px; resize: vertical; line-height: 1.6; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.msg { font-size: 14px; padding: 10px 14px; border-radius: 10px; display: none; }
.msg.err { display: block; background: color-mix(in srgb, var(--danger) 12%, transparent); color: var(--danger); }
.msg.ok { display: block; background: var(--ok-soft); color: var(--ok); }
.hint { font-size: 13px; color: var(--muted); font-weight: 400; }

/* modal */
.modal { position: fixed; inset: 0; z-index: 60; background: rgba(20,12,6,.55); display: none; align-items: flex-start; justify-content: center; padding: 60px 16px; overflow-y: auto; backdrop-filter: blur(3px); }
.modal.open { display: flex; }
.modal .card { width: 100%; max-width: 680px; padding: 28px; }
.modal h2 { font-size: 24px; }
.x { float: right; background: none; border: 0; font-size: 26px; line-height: 1; color: var(--muted); cursor: pointer; }

/* admin */
.tabs { display: flex; gap: 6px; border-bottom: 1px solid var(--line); margin-bottom: 20px; flex-wrap: wrap; }
.tabs button { background: none; border: 0; border-bottom: 2px solid transparent; padding: 10px 14px; font: inherit; font-weight: 600; color: var(--muted); cursor: pointer; }
.tabs button.on { color: var(--ink); border-bottom-color: var(--brand); }
.atable { width: 100%; border-collapse: collapse; font-size: 14px; }
.atable th, .atable td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.atable th { color: var(--muted); font-weight: 600; font-size: 13px; }
.atable td .acts { display: flex; gap: 6px; flex-wrap: wrap; }
.scroll-x { overflow-x: auto; }
.editor { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.editor > * { min-width: 0; }
.editor textarea { min-height: 420px; font-family: Consolas, ui-monospace, monospace; font-size: 14px; }
.preview { border: 1px dashed var(--line-2); border-radius: 10px; padding: 16px 18px; min-height: 420px; max-height: 640px; overflow: auto; background: var(--card); }
.checks { display: flex; gap: 18px; flex-wrap: wrap; font-size: 14px; }
.checks label { display: flex; gap: 6px; align-items: center; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero-grid, .two, .contact-box { grid-template-columns: 1fr; }
  .grid, .updates, .lic { grid-template-columns: 1fr 1fr; }
  .forum { grid-template-columns: 1fr; }
  .side { position: static; }
  .cats { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .editor { grid-template-columns: 1fr; }
  .mock { transform: none; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .burger { display: block; }
  .menu { position: absolute; top: 66px; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; padding: 10px 16px 16px; display: none; box-shadow: 0 16px 30px -18px rgba(0,0,0,.4); }
  .menu.open { display: flex; }
  .menu .btn { margin: 6px 0 0; justify-content: center; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stats div:nth-child(3) { border-left: 0; }
  .stats div:nth-child(n+3) { border-top: 1px solid var(--line); }
}
@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  .grid, .updates, .lic, .row2, .foot-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .hero { padding: 48px 0 56px; }
  .mock-btns, .mock-status { grid-template-columns: 1fr 1fr; }
  .mock-status div:last-child { grid-column: span 2; }
  .contact-box { padding: 30px 22px; }
  .topic { grid-template-columns: 1fr; }
  .topic .nums { justify-content: flex-start; text-align: left; }
  .post { padding: 22px 18px; }
  .fab span { display: none; }
  .fab { padding: 10px; }
}