/* ===== Nhịp Công Sở — hệ thiết kế biên tập ===== */
:root {
  --paper: #F4EFE6;
  --paper-2: #EBE4D6;
  --card: #FFFDF8;
  --ink: #131211;
  --ink-2: #4A4640;
  --ink-3: #645E55;
  --k-mix: #000; /* làm đậm màu chủ đề khi đặt trên nền sáng */
  --line: #D9D0BF;
  --accent: #E4572E;
  --accent-ink: #fff;
  --shadow: 0 1px 2px rgb(20 16 10 / .06), 0 8px 24px -12px rgb(20 16 10 / .18);
  --shadow-lg: 0 24px 60px -20px rgb(20 16 10 / .35);
  --radius: 14px;
  --serif: 'Fraunces', 'Times New Roman', Georgia, serif;
  --sans: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --gutter: clamp(16px, 4vw, 40px);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0F0F10; --k-mix: #fff; --paper-2: #18181A; --card: #1B1B1E; --ink: #F3EFE8; --ink-2: #C5BFB4; --ink-3: #8E887E;
    --line: #2E2D2B; --shadow: 0 1px 2px rgb(0 0 0 / .4), 0 8px 24px -12px rgb(0 0 0 / .6); --shadow-lg: 0 24px 60px -20px rgb(0 0 0 / .8);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0F0F10; --k-mix: #fff; --paper-2: #18181A; --card: #1B1B1E; --ink: #F3EFE8; --ink-2: #C5BFB4; --ink-3: #8E887E;
  --line: #2E2D2B; --shadow: 0 1px 2px rgb(0 0 0 / .4), 0 8px 24px -12px rgb(0 0 0 / .6); --shadow-lg: 0 24px 60px -20px rgb(0 0 0 / .8);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0; background: var(--paper); color: var(--ink); font: 400 16px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
.wrap { width: 100%; max-width: 1320px; margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2.5px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

/* thanh tiến trình đọc trang */
.progress { position: fixed; inset: 0 0 auto 0; height: 3px; background: var(--accent); transform-origin: 0 50%; transform: scaleX(0); z-index: 60; }

/* ===== Masthead ===== */
.masthead { border-bottom: 1px solid var(--line); }
.masthead__top { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; padding-bottom: 6px; gap: 12px; }
.masthead__date { font-size: 13px; color: var(--ink-3); letter-spacing: .02em; text-transform: capitalize; }
.masthead__tools { display: flex; gap: 6px; }
.iconbtn {
  position: relative; display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--card); transition: transform .2s var(--ease), background .2s;
}
.iconbtn:hover { transform: translateY(-1px); background: var(--paper-2); }
.iconbtn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.badge { position: absolute; top: -4px; right: -4px; min-width: 18px; height: 18px; padding: 0 5px; border-radius: 9px; background: var(--accent); color: #fff; font-size: 11px; font-weight: 700; display: grid; place-items: center; }
.masthead__brand { padding-top: clamp(8px, 2vw, 20px); padding-bottom: clamp(18px, 3vw, 30px); display: grid; gap: 10px; }
.logo { font: 900 clamp(44px, 9vw, 112px)/.9 var(--serif); letter-spacing: -.035em; margin: 0; font-variation-settings: 'opsz' 144; }
.logo__mark { color: var(--accent); font-size: .42em; vertical-align: .55em; margin-right: .12em; display: inline-block; animation: pulse 2.4s var(--ease) infinite; }
.logo--sm { font-size: 30px; }
.logo--sm .logo__mark { animation: none; }
.tagline { margin: 0; max-width: 62ch; font-size: clamp(15px, 1.6vw, 18px); color: var(--ink-2); }
.tagline em { font-family: var(--serif); font-style: italic; color: var(--ink); }
.live { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-2); }
.live__dot { width: 8px; height: 8px; border-radius: 50%; background: #22C55E; box-shadow: 0 0 0 0 rgb(34 197 94 / .6); animation: ping 2s infinite; }
.live.is-error .live__dot { background: #F59E0B; animation: none; }
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgb(34 197 94 / .55); } 80%, 100% { box-shadow: 0 0 0 10px rgb(34 197 94 / 0); } }
@keyframes pulse { 50% { opacity: .55; transform: scale(.9); } }

/* ===== Ticker ===== */
.ticker { display: flex; align-items: stretch; background: var(--ink); color: var(--paper); font-size: 14px; overflow: hidden; }
.ticker__label { flex: none; padding: 10px 16px; background: var(--accent); color: #fff; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; font-size: 12px; display: flex; align-items: center; }
.ticker__viewport { overflow: hidden; flex: 1; mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent); }
.ticker__track { display: inline-flex; gap: 48px; padding: 10px 24px; white-space: nowrap; animation: marquee var(--dur, 60s) linear infinite; }
.ticker:hover .ticker__track { animation-play-state: paused; }
.ticker__track a { opacity: .92; }
.ticker__track a:hover { opacity: 1; text-decoration: underline; text-underline-offset: 3px; }
.ticker__track a::before { content: '◆'; color: var(--accent); margin-right: 12px; font-size: 10px; vertical-align: 2px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ===== Bộ lọc ===== */
.filters { position: sticky; top: 0; z-index: 40; background: color-mix(in oklab, var(--paper) 86%, transparent); backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px); border-bottom: 1px solid var(--line); }
.filters__inner { display: flex; align-items: center; gap: 12px; padding-top: 10px; padding-bottom: 10px; }
.chips { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; flex: 1; scroll-snap-type: x proximity; padding: 2px; }
.chips::-webkit-scrollbar { display: none; }
.chip {
  --c: var(--ink); flex: none; display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--card); font-size: 14px; font-weight: 500; white-space: nowrap; scroll-snap-align: start;
  transition: background .25s var(--ease), color .25s, border-color .25s, transform .2s var(--ease);
}
.chip:hover { transform: translateY(-1px); border-color: var(--c); }
.chip i { width: 8px; height: 8px; border-radius: 50%; background: var(--c); }
.chip span { font-size: 12px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.chip[aria-selected="true"] { --cd: color-mix(in oklab, var(--c) 62%, #000); background: var(--cd); color: #fff; border-color: var(--cd); }
.chip[aria-selected="true"] i { background: #fff; }
.chip[aria-selected="true"] span { color: rgb(255 255 255 / .8); }
.chip[data-topic="all"][aria-selected="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.chip[data-topic="all"][aria-selected="true"] span { color: color-mix(in oklab, var(--paper) 70%, transparent); }
.seg { flex: none; display: inline-flex; padding: 3px; border-radius: 999px; background: var(--paper-2); border: 1px solid var(--line); }
.seg button { border: 0; background: none; padding: 6px 12px; border-radius: 999px; font-size: 13px; font-weight: 600; color: var(--ink-2); transition: background .25s, color .25s; }
.seg button[aria-checked="true"] { background: var(--card); color: var(--ink); box-shadow: var(--shadow); }

/* ===== Thành phần chung ===== */
.kicker { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: color-mix(in oklab, var(--tc, var(--accent)) 62%, var(--k-mix)); }
.kicker::before { content: ''; width: 18px; height: 2px; background: currentColor; }
.meta { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; font-size: 13px; color: var(--ink-3); }
.meta b { color: var(--ink-2); font-weight: 600; }
.meta .dot::before { content: '·'; margin-right: 10px; }
.lang { font-size: 10px; font-weight: 800; letter-spacing: .06em; padding: 2px 6px; border-radius: 4px; border: 1px solid currentColor; color: var(--ink-3); }
.also { font-size: 12px; font-weight: 600; color: var(--accent); }
.card { position: relative; display: block; cursor: pointer; border-radius: var(--radius); }
.card h3, .card h2 { transition: color .2s; }
.card:hover h3, .card:hover h2 { color: var(--accent); }
.media { position: relative; overflow: hidden; border-radius: var(--radius); background: var(--paper-2); aspect-ratio: 16 / 10; isolation: isolate; }
.media img { width: 100%; height: 100%; object-fit: cover; opacity: 0; transform: scale(1.02); transition: opacity .6s var(--ease), transform 1.2s var(--ease); }
.media img.is-loaded { opacity: 1; transform: scale(1); }
.card:hover .media img.is-loaded { transform: scale(1.045); }
/* ảnh bìa dự phòng khi nguồn không có ảnh */
.media--fallback { background: radial-gradient(120% 90% at 0% 0%, color-mix(in oklab, var(--tc) 85%, #fff) 0%, var(--tc) 45%, color-mix(in oklab, var(--tc) 55%, #000) 100%); color: #fff; }
.media--fallback::before { content: ''; position: absolute; inset: 0; background-image: radial-gradient(rgb(255 255 255 / .18) 1px, transparent 1px); background-size: 14px 14px; mask-image: linear-gradient(135deg, transparent 30%, #000); }
.media--fallback .glyph { position: absolute; right: -0.06em; bottom: -0.22em; font: 900 clamp(110px, 16vw, 220px)/1 var(--serif); opacity: .22; letter-spacing: -.06em; }
.media--fallback .fb-label { position: absolute; left: 16px; top: 14px; font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; opacity: .92; }
.rank { font: 900 54px/1 var(--serif); color: transparent; -webkit-text-stroke: 1.5px var(--ink-3); font-variant-numeric: lining-nums; }

/* ===== Hero ===== */
.hero { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: clamp(20px, 3vw, 40px); padding: clamp(22px, 4vw, 44px) 0 clamp(28px, 4vw, 48px); border-bottom: 1px solid var(--line); }
.lead .media { aspect-ratio: 16 / 10; border-radius: calc(var(--radius) + 4px); box-shadow: var(--shadow-lg); }
.lead .media::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgb(0 0 0 / .12) 0%, rgb(0 0 0 / .38) 40%, rgb(0 0 0 / .86) 100%); z-index: 1; }
.lead__over { position: absolute; left: 0; right: 0; bottom: 0; z-index: 2; padding: clamp(18px, 3vw, 34px); color: #fff; }
.lead__over .meta, .lead__over .meta b { color: rgb(255 255 255 / .85); }
.lead h2 { font: 800 clamp(24px, 3.2vw, 46px)/1.06 var(--serif); letter-spacing: -.02em; margin: 10px 0 12px; text-wrap: balance; text-shadow: 0 2px 20px rgb(0 0 0 / .4); display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.lead__over .kicker { color: #fff; }
.card.lead:hover h2 { color: #fff; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 6px; }
.lead__dek { margin: 14px 0 0; color: var(--ink-2); font-size: 17px; max-width: 65ch; }
.side { display: grid; gap: 4px; align-content: start; }
.side__h { font: 700 13px/1 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 10px; display: flex; align-items: center; gap: 10px; }
.side__h::after { content: ''; flex: 1; height: 1px; background: var(--line); }
.toprow { display: grid; grid-template-columns: 46px minmax(0, 1fr) 96px; gap: 14px; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--line); }
.toprow:last-child { border-bottom: 0; }
.toprow h3 { font: 700 17px/1.3 var(--serif); margin: 4px 0 6px; text-wrap: pretty; }
.toprow .media { aspect-ratio: 1; border-radius: 10px; }
.toprow .media--fallback .glyph { font-size: 80px; }
.toprow .media--fallback .fb-label { display: none; }

/* ===== Biểu đồ 48h ===== */
.pulse { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: clamp(20px, 3vw, 40px); align-items: center; padding: 28px 0; border-bottom: 1px solid var(--line); }
.pulse__title { font: 800 clamp(24px, 2.6vw, 32px)/1.1 var(--serif); margin: 6px 0 6px; letter-spacing: -.01em; }
.pulse__sub { color: var(--ink-3); font-size: 14px; margin: 0; }
.bar { display: flex; height: 18px; border-radius: 999px; overflow: hidden; background: var(--paper-2); gap: 2px; }
.bar button { border: 0; padding: 0; background: var(--tc); flex: var(--n) 1 0; transition: flex-grow .6s var(--ease), filter .2s; min-width: 6px; }
.bar button:hover { filter: brightness(1.12); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 14px; font-size: 13px; color: var(--ink-2); }
.legend button { border: 0; background: none; padding: 0; display: inline-flex; gap: 7px; align-items: center; }
.legend i { width: 10px; height: 10px; border-radius: 3px; background: var(--tc); }
.legend b { font-variant-numeric: tabular-nums; }
.spark { display: flex; align-items: flex-end; gap: 3px; height: 54px; margin-top: 18px; }
.spark span { flex: 1; background: color-mix(in oklab, var(--accent) 70%, var(--paper)); border-radius: 3px 3px 0 0; min-height: 2px; height: calc(var(--h) * 1%); transform-origin: bottom; animation: grow .9s var(--ease) both; animation-delay: calc(var(--i) * 18ms); }
.spark__axis { display: flex; justify-content: space-between; font-size: 11px; color: var(--ink-3); margin-top: 6px; }
@keyframes grow { from { transform: scaleY(0); } }

/* ===== Section chủ đề ===== */
.section { padding: clamp(30px, 4vw, 52px) 0; border-bottom: 1px solid var(--line); }
.section__head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.section__title { font: 900 clamp(28px, 3.6vw, 46px)/1 var(--serif); letter-spacing: -.025em; margin: 8px 0 0; }
.section__title small { font: 600 15px var(--sans); color: var(--ink-3); letter-spacing: 0; margin-left: 10px; vertical-align: middle; }
.more { flex: none; display: inline-flex; gap: 6px; align-items: center; font-size: 14px; font-weight: 600; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); transition: background .2s, transform .2s var(--ease); }
.more:hover { background: var(--paper-2); transform: translateX(2px); }
.bento { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: clamp(16px, 2vw, 28px); }
.bento > .feature { grid-column: span 6; grid-row: span 2; }
.bento > .std { grid-column: span 3; }
.bento.flip > .feature { order: 2; }
.feature h3 { font: 800 clamp(22px, 2.4vw, 32px)/1.12 var(--serif); letter-spacing: -.015em; margin: 14px 0 8px; text-wrap: balance; }
.feature .media { aspect-ratio: 4 / 3; }
.feature p, .std p { color: var(--ink-2); margin: 0 0 10px; }
.std h3 { font: 700 18px/1.28 var(--serif); margin: 12px 0 6px; text-wrap: pretty; }
.std p { font-size: 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.std .media { aspect-ratio: 3 / 2; }
.std .media--fallback .glyph { font-size: 120px; }

/* ===== Quốc tế (carousel) ===== */
.intl { --intl-bg: #131211; --intl-ink: #F3EFE8; --k-mix: #fff; background: var(--intl-bg); color: var(--intl-ink); margin: 0 calc(var(--gutter) * -1); padding: clamp(30px, 4vw, 52px) var(--gutter); border-radius: 0; }
@media (min-width: 1320px) { .intl { border-radius: 24px; margin: 30px 0; } }
.intl .section__title, .rail h3 { color: var(--intl-ink); }
:root[data-theme="dark"] .intl, .intl { box-shadow: inset 0 0 0 1px rgb(255 255 255 / .06); }
.intl .kicker { color: #FFB199; }
.intl .more { background: transparent; border-color: rgb(255 255 255 / .25); color: var(--intl-ink); }
.intl .more:hover { background: rgb(255 255 255 / .08); }
.rail { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(270px, 1fr); gap: 22px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 10px; scrollbar-width: thin; scrollbar-color: rgb(255 255 255 / .3) transparent; }
@media (min-width: 1100px) { .rail { grid-auto-columns: calc((100% - 66px) / 4); } }
.rail .card { scroll-snap-align: start; }
.rail h3 { font: 700 19px/1.25 var(--serif); margin: 12px 0 6px; }
.rail .meta, .rail .meta b { color: rgb(255 255 255 / .65); }
.rail .lang { color: rgb(255 255 255 / .7); }
.rail .media { aspect-ratio: 4 / 3; }
.rail-nav { display: flex; gap: 8px; }
.rail-nav { align-items: center; }
.rail-nav button:not(.more) { width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgb(255 255 255 / .25); background: none; color: var(--intl-ink); font-size: 18px; transition: background .2s; }
.rail-nav button:not(.more):hover { background: rgb(255 255 255 / .1); }

/* ===== Dòng thời gian ===== */
.timeline { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 0 clamp(20px, 4vw, 56px); }
.tl-group { grid-column: 1 / -1; font: 700 13px var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); padding: 18px 0 6px; border-bottom: 2px solid var(--ink); }
.tl { display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.tl time { font: 700 14px var(--sans); font-variant-numeric: tabular-nums; color: var(--ink-2); padding-top: 2px; }
.tl h4 { font: 600 16px/1.35 var(--sans); margin: 0 0 4px; transition: color .2s; }
.tl:hover h4 { color: var(--accent); }
.tl .pill { --tc: var(--ink-3); display: inline-block; font-size: 11px; font-weight: 700; color: color-mix(in oklab, var(--tc) 62%, var(--k-mix)); margin-right: 8px; }
.loadmore { display: block; margin: 26px auto 0; padding: 12px 22px; border-radius: 999px; border: 1px solid var(--ink); background: var(--ink); color: var(--paper); font-weight: 600; transition: transform .2s var(--ease), box-shadow .2s; }
.loadmore:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* ===== Lưới khi lọc ===== */
.grid-view { padding: clamp(24px, 4vw, 44px) 0; }
.grid-view__head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 26px; flex-wrap: wrap; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 290px), 1fr)); gap: clamp(18px, 2vw, 30px); }
.grid .std h3 { font-size: 19px; }
.empty { text-align: center; padding: 80px 20px; color: var(--ink-3); }
.empty b { display: block; font: 800 28px var(--serif); color: var(--ink); margin-bottom: 8px; }

/* ===== Footer ===== */
.footer { padding: 48px 0 calc(48px + env(safe-area-inset-bottom)); background: var(--paper-2); }
.footer__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 40px; }
.footer__note { color: var(--ink-2); font-size: 14px; max-width: 52ch; }
.footer__h { font: 700 13px var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin: 6px 0 14px; }
.sources { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 8px 18px; font-size: 14px; }
.sources li { display: flex; align-items: center; gap: 8px; color: var(--ink-2); }
.sources li::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: #22C55E; flex: none; }
.sources li.off::before { background: #EF4444; }
.sources li small { color: var(--ink-3); margin-left: auto; font-variant-numeric: tabular-nums; }

/* ===== Drawer ===== */
.scrim { position: fixed; inset: 0; background: rgb(10 8 5 / .45); backdrop-filter: blur(3px); z-index: 70; opacity: 0; transition: opacity .3s var(--ease); }
.scrim.is-open { opacity: 1; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(560px, 100%); background: var(--card); z-index: 80; box-shadow: var(--shadow-lg); transform: translateX(104%); transition: transform .45s var(--ease); overflow-y: auto; overscroll-behavior: contain; }
.drawer.is-open { transform: none; }
.drawer__close { position: absolute; top: 14px; right: 14px; z-index: 3; }
.drawer .media { border-radius: 0; aspect-ratio: 16 / 10; }
.drawer__content { padding: 24px clamp(20px, 4vw, 34px) 40px; }
.drawer h2 { font: 800 clamp(24px, 3vw, 32px)/1.15 var(--serif); letter-spacing: -.015em; margin: 12px 0 14px; }
.drawer__sum { font-size: 17px; color: var(--ink-2); margin: 18px 0; }
.drawer__sum::first-letter { font: 900 3.1em/0.8 var(--serif); float: left; margin: 6px 8px 0 0; color: var(--tc, var(--accent)); }
.drawer__also { font-size: 14px; color: var(--ink-2); padding: 12px 14px; border-radius: 10px; background: var(--paper-2); margin: 0 0 18px; }
.drawer__also a { text-decoration: underline; text-underline-offset: 3px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 18px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); font-weight: 600; font-size: 15px; transition: transform .2s var(--ease), background .2s; }
.btn:hover { transform: translateY(-1px); background: var(--paper-2); }
.btn--primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn--primary:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn[aria-pressed="true"] { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.drawer__related { margin-top: 32px; }
.drawer__related h3 { font: 700 13px var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 6px; }
.disclaimer { font-size: 12px; color: var(--ink-3); margin-top: 22px; }

/* ===== Tìm kiếm ===== */
.search { position: fixed; inset: 0; z-index: 90; background: rgb(10 8 5 / .5); backdrop-filter: blur(6px); padding: min(12vh, 110px) var(--gutter) 20px; opacity: 0; transition: opacity .2s; }
.search.is-open { opacity: 1; }
.search__box { max-width: 680px; margin: 0 auto; display: flex; align-items: center; gap: 12px; background: var(--card); border-radius: 16px; padding: 4px 16px; box-shadow: var(--shadow-lg); }
.search__box svg { width: 20px; height: 20px; fill: none; stroke: var(--ink-3); stroke-width: 2; flex: none; }
.search__box input { flex: 1; border: 0; background: none; font: 500 18px var(--sans); color: var(--ink); padding: 16px 0; outline: none; min-width: 0; }
kbd { font: 600 11px var(--sans); color: var(--ink-3); border: 1px solid var(--line); border-radius: 6px; padding: 3px 6px; }
.search__results { list-style: none; max-width: 680px; margin: 10px auto 0; padding: 6px; background: var(--card); border-radius: 16px; box-shadow: var(--shadow-lg); max-height: 60vh; overflow-y: auto; }
.search__results:empty { display: none; }
.search__results li a { display: block; padding: 12px 14px; border-radius: 10px; }
.search__results li a:hover, .search__results li a.is-active { background: var(--paper-2); }
.search__results h4 { margin: 0 0 4px; font: 600 15px/1.35 var(--sans); }
.search__results mark { background: color-mix(in oklab, var(--accent) 30%, transparent); color: inherit; border-radius: 3px; padding: 0 2px; }

/* ===== Toast ===== */
.toast { position: fixed; left: 50%; bottom: calc(22px + env(safe-area-inset-bottom)); transform: translate(-50%, 30px); opacity: 0; z-index: 95; background: var(--ink); color: var(--paper); padding: 12px 18px; border-radius: 999px; font-size: 14px; font-weight: 600; box-shadow: var(--shadow-lg); transition: opacity .3s, transform .35s var(--ease); display: flex; gap: 12px; align-items: center; }
.toast.is-open { opacity: 1; transform: translate(-50%, 0); }
.toast button { border: 0; background: var(--accent); color: #fff; border-radius: 999px; padding: 6px 12px; font-weight: 700; font-size: 13px; }

/* ===== Hiệu ứng xuất hiện ===== */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ===== Skeleton ===== */
.skeleton-hero { border-bottom: 0; }
.sk { border-radius: var(--radius); background: linear-gradient(100deg, var(--paper-2) 30%, color-mix(in oklab, var(--paper-2) 60%, var(--card)) 50%, var(--paper-2) 70%); background-size: 300% 100%; animation: shimmer 1.4s infinite linear; }
.sk--lead { aspect-ratio: 16 / 10; }
.sk-col { display: grid; gap: 18px; align-content: start; }
.sk--row { height: 110px; }
@keyframes shimmer { from { background-position: 100% 0; } to { background-position: -50% 0; } }

/* ===== View transitions ===== */
::view-transition-old(root), ::view-transition-new(root) { animation-duration: .35s; animation-timing-function: var(--ease); }

/* ===== Responsive ===== */
@media (min-width: 901px) and (max-width: 1320px) { .lead .media { aspect-ratio: 4 / 3; } }
@media (max-width: 1080px) {
  .bento > .feature { grid-column: span 12; grid-row: auto; }
  .bento > .std { grid-column: span 6; }
  .bento.flip > .feature { order: 0; }
  .feature .media { aspect-ratio: 16 / 9; }
}
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .pulse { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .filters__inner { flex-direction: column; align-items: stretch; gap: 8px; }
  .seg { align-self: flex-start; }
  .bento > .std { grid-column: span 12; }
  .std { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 0 14px; align-items: start; }
  .std .media { aspect-ratio: 1; border-radius: 10px; grid-row: span 3; }
  .std h3 { margin-top: 0; font-size: 16px; }
  .std p { display: none; }
  .std .media--fallback .glyph { font-size: 80px; }
  .std .media--fallback .fb-label { display: none; }
  .lead .media { aspect-ratio: 4 / 5; }
  .toprow { grid-template-columns: 34px minmax(0, 1fr) 76px; }
  .rank { font-size: 38px; }
  .masthead__date { font-size: 12px; }
  .lead__dek { font-size: 15px; }
  .section__head { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
  .ticker__track { animation: none; }
}