:root {
  --bg: #0A0D13; --alt: #0E121A; --ink: #EEF2F8; --black: #05070B; --graphite: #141A26; --steel: #1B2434;
  --muted: #9AA4B5; --muted-2: #6F7A8D; --line: #263043; --line-soft: #1C2434;
  --accent: #FF5A1F; --accent-d: #E04711; --accent-soft: rgba(255, 90, 31, .14); --gold: #22D3EE;
  --surface: #121722; --header-bg: rgba(10, 13, 19, .82); --body: #C5CEDB; --on-dark-muted: #9AA4B5; --on-dark-faint: #6F7A8D; --dark-line: #232C3D;
  --warn-border: #4A3B14; --warn-ink: #F2C66D; --ok: #3DDC97; --ok-soft: rgba(61, 220, 151, .13); --warn-soft: #2A2111;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4); --shadow-md: 0 10px 28px rgba(0, 0, 0, .45); --shadow-lg: 0 24px 56px rgba(0, 0, 0, .6);
  --r-md: 6px; --r-lg: 10px; --r-xl: 14px; --r-2xl: 18px;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-serif: "Space Grotesk", "Inter", system-ui, sans-serif;
  --max: 1280px; --gutter: 16px; --header-h: 56px;
}

/* base.css — bố cục chung, mọi màu / phông lấy từ biến trong tokens.css (khai báo theo từng site) */
@media (min-width: 768px) { :root { --gutter: 24px; --header-h: 64px; } }
@media (min-width: 1024px) { :root { --gutter: 32px; --header-h: 80px; } }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 64px); }
body { margin: 0; font-family: var(--font-sans); font-size: 16px; line-height: 1.55; color: var(--ink); background: var(--bg); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img, svg { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-d); }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); color: var(--ink); line-height: 1.15; letter-spacing: -.02em; }
p { margin: 0 0 1em; }
.wrap { width: min(var(--max), 100% - var(--gutter) * 2); margin-inline: auto; }
.narrow { width: min(760px, 100% - var(--gutter) * 2); margin-inline: auto; }
.ico { width: 20px; height: 20px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.ico-lg { width: 24px; height: 24px; }
.muted { color: var(--muted); }
.center { text-align: center; }

/* ---------- Nút ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 40px; padding: 0 18px; border-radius: var(--r-md); border: 1px solid transparent; font: 600 14px/1 var(--font-sans); cursor: pointer; transition: background-color .2s, border-color .2s, color .2s, transform .2s; text-decoration: none; white-space: nowrap; }
.btn:hover { transform: translateY(-1px); }
.btn-lg { height: 48px; padding: 0 26px; font-size: 15px; }
.btn-primary { background: var(--accent); color: #fff; } .btn-primary:hover { background: var(--accent-d); color: #fff; }
.btn-dark { background: var(--ink); color: var(--bg); } .btn-dark:hover { background: var(--black); color: #fff; }
.btn-light { background: #fff; color: var(--black); } .btn-light:hover { background: var(--alt); color: var(--ink); }
.btn-outline { background: transparent; border-color: var(--line); color: var(--ink); } .btn-outline:hover { border-color: var(--ink); color: var(--ink); }
.btn-outline-light { background: transparent; border-color: rgba(255, 255, 255, .4); color: #fff; } .btn-outline-light:hover { border-color: #fff; color: #fff; }
a:focus-visible, .btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Header (kính mờ, phẳng) ---------- */
.hd { position: sticky; top: 0; z-index: 50; background: var(--header-bg); -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px); border-bottom: 1px solid var(--line-soft); transition: box-shadow .2s; }
.hd.scrolled { box-shadow: var(--shadow-sm); }
.hd-in { display: flex; align-items: center; gap: 24px; height: var(--header-h); }
.brand { display: inline-flex; align-items: center; gap: 12px; font: 700 19px/1 var(--font-display); color: var(--ink); letter-spacing: -.03em; }
.brand:hover { color: var(--ink); }
.brand img { height: 26px; width: auto; }
.nav { display: none; align-items: center; gap: 2px; margin-left: auto; }
.nav a, .nav-item > a { white-space: nowrap; display: inline-flex; align-items: center; gap: 4px; padding: 8px 14px; border-radius: var(--r-md); font-size: 15px; font-weight: 500; color: var(--ink); }
.nav a:hover { background: var(--alt); color: var(--ink); }
.nav a.is-active { color: var(--accent); background: var(--accent-soft); }
.nav-item { position: relative; }
.nav-sub { position: absolute; top: calc(100% + 4px); left: 0; min-width: 240px; padding: 8px; background: var(--surface); border: 1px solid var(--line-soft); border-radius: var(--r-lg); box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(6px); transition: opacity .15s, transform .15s, visibility .15s; }
.nav-item:hover .nav-sub, .nav-item:focus-within .nav-sub { opacity: 1; visibility: visible; transform: none; }
.nav-sub a { display: flex; width: 100%; padding: 10px 12px; }
.hd-cta { display: none; }
.menu-btn { margin-left: auto; display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--surface); color: var(--ink); cursor: pointer; }
@media (min-width: 1024px) { .nav { display: flex; } .hd-cta { display: inline-flex; margin-left: 8px; } .menu-btn { display: none; } }
@media (max-width: 1023px) {
  .nav { position: absolute; top: var(--header-h); left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; padding: 8px var(--gutter) 16px; background: var(--surface); border-top: 1px solid var(--line-soft); box-shadow: var(--shadow-lg); max-height: calc(100vh - var(--header-h)); overflow-y: auto; }
  .nav.open { display: flex; }
  .nav-sub { position: static; opacity: 1; visibility: visible; transform: none; border: 0; box-shadow: none; padding: 0 0 4px 16px; min-width: 0; background: transparent; }
  .nav a, .nav-item > a { padding: 12px 8px; }
}

/* ---------- Chung ---------- */
.section { padding: 56px 0; }
@media (min-width: 1024px) { .section { padding: 96px 0; } }
.section-alt { background: var(--alt); }
.section-dark { background: var(--black); color: #fff; }
.section-dark h2, .section-dark h3 { color: #fff; }
.sec-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }
.sec-title { font-size: 28px; font-weight: 800; letter-spacing: -.03em; line-height: 1.15; }
@media (min-width: 1024px) { .sec-title { font-size: 40px; } }
.sec-sub { margin: 8px 0 0; color: var(--muted); font-size: 17px; max-width: 620px; }
.section-dark .sec-sub { color: var(--muted-2); }
.link-more { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 15px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--gold); }
.eyebrow::before { content: ""; width: 24px; height: 1px; background: var(--gold); }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; background: var(--ok-soft); color: var(--ok); font-size: 12px; font-weight: 600; }
.badge-dark { background: rgba(255, 255, 255, .12); color: #fff; }
.note { margin-top: 28px; padding: 14px 18px; border-radius: var(--r-lg); background: var(--alt); color: var(--muted); font-size: 14px; }
.crumb { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--muted-2); flex-wrap: wrap; margin-bottom: 18px; }
.crumb a { color: var(--muted-2); } .crumb a:hover { color: var(--ink); }
.ph { overflow: hidden; border-radius: var(--r-xl); background: var(--alt); }
.ph img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s cubic-bezier(.2, .7, .2, 1); }
a:hover .ph img, .zoom:hover img { transform: scale(1.04); }
.r16x10 { aspect-ratio: 8 / 5; } .r4x3 { aspect-ratio: 4 / 3; } .r1x1 { aspect-ratio: 1 / 1; }

/* Hiệu ứng hiện dần khi cuộn */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s cubic-bezier(.2, .7, .2, 1), transform .7s cubic-bezier(.2, .7, .2, 1); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } .btn:hover, a:hover .ph img { transform: none; } }

/* ---------- Hero tối ---------- */
.hero { background: var(--black); color: #fff; overflow: hidden; }
.hero-grid { display: grid; gap: 40px; align-items: center; padding: 48px 0 56px; }
@media (min-width: 1024px) { .hero-grid { grid-template-columns: 1.05fr .95fr; padding: 88px 0 96px; gap: 64px; } }
.hero h1 { color: #fff; margin-top: 20px; font-size: clamp(40px, 7vw, 76px); font-weight: 800; letter-spacing: -.045em; line-height: 1.02; }
.hero h1 span { color: var(--muted-2); }
.hero .lead { margin: 24px 0 0; max-width: 520px; font-size: 19px; color: var(--on-dark-muted); }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 36px; }
.hero-photo { position: relative; border-radius: var(--r-2xl); overflow: hidden; border: 1px solid var(--dark-line); }
.hero-photo img { width: 100%; aspect-ratio: 4 / 4.2; object-fit: cover; }
.hero-chip { position: absolute; left: 16px; bottom: 16px; display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: var(--r-lg); background: rgba(0, 0, 0, .72); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); color: #fff; font-size: 14px; }
.hero-chip b { font-family: var(--font-display); }
.kpis-hero { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--dark-line); }
@media (min-width: 768px) { .kpis-hero { grid-template-columns: repeat(4, 1fr); } }
.kpis-hero > div { padding: 28px 0 32px; border-bottom: 1px solid var(--dark-line); }
@media (min-width: 768px) { .kpis-hero > div { border-bottom: 0; padding-right: 24px; } .kpis-hero > div + div { padding-left: 28px; border-left: 1px solid var(--dark-line); } }
.kpis-hero b { display: block; font: 800 clamp(32px, 4vw, 52px)/1 var(--font-display); color: #fff; letter-spacing: -.04em; }
.kpis-hero span { display: block; margin-top: 8px; color: var(--muted-2); font-size: 14px; }

.page-head { background: var(--black); color: #fff; padding: 36px 0 44px; }
@media (min-width: 1024px) { .page-head { padding: 64px 0 72px; } }
.page-head h1 { color: #fff; font-size: clamp(34px, 5vw, 60px); font-weight: 800; letter-spacing: -.04em; line-height: 1.05; }
.page-head .lead { margin: 16px 0 0; max-width: 680px; font-size: 19px; color: var(--on-dark-muted); }
.page-head .crumb, .page-head .crumb a { color: var(--on-dark-faint); } .page-head .crumb a:hover { color: #fff; }
.page-head.light { background: var(--alt); color: var(--ink); } .page-head.light h1 { color: var(--ink); } .page-head.light .lead { color: var(--muted); }
.page-head.light .crumb, .page-head.light .crumb a { color: var(--muted-2); }

/* ---------- Bento ---------- */
.bento { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 768px) { .bento { grid-template-columns: repeat(6, 1fr); } .b-lg { grid-column: span 4; } .b-md { grid-column: span 3; } .b-sm { grid-column: span 2; } }
.tile { position: relative; display: flex; flex-direction: column; border-radius: var(--r-2xl); overflow: hidden; min-height: 320px; background: var(--alt); color: var(--ink); transition: transform .35s cubic-bezier(.2, .7, .2, 1), box-shadow .35s; }
a.tile:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); color: inherit; }
.tile-text { padding: 28px 28px 0; }
.tile h3 { font-size: 24px; font-weight: 800; letter-spacing: -.03em; }
.tile p { margin: 8px 0 0; color: var(--muted); font-size: 15px; }
.tile-img { flex: 1; min-height: 180px; margin-top: 20px; overflow: hidden; }
.tile-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s cubic-bezier(.2, .7, .2, 1); }
a.tile:hover .tile-img img { transform: scale(1.05); }
.tile.t-dark { background: var(--graphite); color: #fff; } .tile.t-dark h3 { color: #fff; } .tile.t-dark p { color: var(--on-dark-muted); }
.tile.t-black { background: var(--black); color: #fff; } .tile.t-black h3 { color: #fff; } .tile.t-black p { color: var(--on-dark-muted); }
.tile.t-stat { justify-content: space-between; padding: 28px; min-height: 240px; }
.tile .big { font: 800 clamp(56px, 7vw, 96px)/.95 var(--font-display); letter-spacing: -.05em; }
.tile .big small { font-size: .38em; letter-spacing: -.02em; margin-left: 4px; color: var(--muted-2); }
.tile .tag { align-self: flex-start; margin-bottom: 14px; }

/* ---------- Thẻ danh mục + sản phẩm ---------- */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }
.card { display: block; background: var(--surface); border-radius: var(--r-xl); overflow: hidden; border: 1px solid var(--line-soft); transition: transform .3s, box-shadow .3s, border-color .3s; color: var(--ink); }
a.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; color: var(--ink); }
.card-body { padding: 20px 22px 24px; }
.card h3 { font-size: 19px; font-weight: 700; letter-spacing: -.02em; line-height: 1.3; }
.card p { margin: 8px 0 0; font-size: 14px; color: var(--muted); }
.card .meta { font-size: 13px; color: var(--muted-2); }
.cat-card .ph { border-radius: 0; }
.cat-card .go { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; font-weight: 600; font-size: 14px; color: var(--accent); }

/* Dòng thời gian cuộn ngang */
.tl { display: flex; gap: 16px; overflow-x: auto; padding-bottom: 12px; scroll-snap-type: x mandatory; scrollbar-width: thin; }
.tl > div { flex: 0 0 min(280px, 78%); scroll-snap-align: start; padding: 22px; border-radius: var(--r-xl); background: var(--steel); }
.tl b { display: block; font: 800 34px/1 var(--font-display); color: #fff; letter-spacing: -.04em; }
.tl span { display: block; margin-top: 12px; font-size: 14px; color: var(--on-dark-muted); }

/* ---------- Trang nhóm sản phẩm ---------- */
.chips { position: sticky; top: var(--header-h); z-index: 20; background: var(--header-bg); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); border-bottom: 1px solid var(--line-soft); }
.chips-in { display: flex; gap: 8px; overflow-x: auto; padding: 12px 0; scrollbar-width: none; }
.chips-in::-webkit-scrollbar { display: none; }
.chips a { flex-shrink: 0; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line); font-size: 14px; font-weight: 500; color: var(--ink); }
.chips a:hover { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.pitem { display: grid; gap: 28px; padding: 40px 0; border-bottom: 1px solid var(--line-soft); }
.pitem:last-of-type { border-bottom: 0; }
@media (min-width: 960px) { .pitem { grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; padding: 64px 0; } .pitem.flip .pitem-img { order: 2; } }
.pitem-img { border-radius: var(--r-2xl); overflow: hidden; background: var(--alt); }
.pitem-img img { width: 100%; aspect-ratio: 8 / 5; object-fit: cover; }
.pitem h2 { font-size: clamp(28px, 3.4vw, 44px); font-weight: 800; letter-spacing: -.04em; margin-top: 14px; }
.pitem .sum { margin: 12px 0 0; font-size: 18px; color: var(--muted); }
.price-big { margin: 18px 0 0; font: 700 20px/1.3 var(--font-display); letter-spacing: -.02em; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin: 28px 0 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.facts > div { padding: 18px 12px 18px 0; } .facts > div + div { padding-left: 16px; border-left: 1px solid var(--line-soft); }
.facts b { display: block; font: 800 clamp(22px, 2.4vw, 32px)/1.05 var(--font-display); letter-spacing: -.04em; }
.facts span { display: block; margin-top: 6px; font-size: 13px; color: var(--muted); }
.specs { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 10px; }
.specs li { display: flex; gap: 10px; font-size: 15px; }
.specs .ico { width: 18px; height: 18px; margin-top: 3px; color: var(--accent); }
.p-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 28px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line-soft); border-radius: var(--r-xl); }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
thead th { background: var(--alt); font: 600 13px var(--font-sans); letter-spacing: .04em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }

/* ---------- Bảng giá ---------- */
.plans { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.plan { position: relative; display: flex; flex-direction: column; padding: 32px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-2xl); }
.plan.is-hot { background: var(--black); color: #fff; border-color: var(--black); }
.plan.is-hot h3, .plan.is-hot .plan-price { color: #fff; }
.plan-tag { align-self: flex-start; margin-bottom: 16px; padding: 4px 12px; border-radius: 999px; background: var(--gold); color: #000; font-size: 12px; font-weight: 700; }
.plan h3 { font-size: 24px; font-weight: 800; letter-spacing: -.03em; }
.plan-desc { margin: 6px 0 0; font-size: 14px; color: var(--muted); } .plan.is-hot .plan-desc { color: var(--on-dark-muted); }
.plan-price { margin: 22px 0; font: 800 34px/1.1 var(--font-display); letter-spacing: -.04em; }
.plan-price small { font: 500 14px var(--font-sans); color: var(--muted-2); letter-spacing: 0; }
.plan-features { list-style: none; margin: 0 0 28px; padding: 22px 0 0; border-top: 1px solid var(--line-soft); display: grid; gap: 12px; flex: 1; font-size: 15px; }
.plan.is-hot .plan-features { border-color: var(--dark-line); }
.plan-features li { display: flex; gap: 10px; }
.plan-features li::before { content: ""; flex-shrink: 0; width: 18px; height: 18px; margin-top: 3px; background: no-repeat center / contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230071E3' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E"); }
.empty { text-align: center; padding: 48px 0; color: var(--muted); }

/* ---------- Báo điện tử ---------- */
.kicker { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.serif { font-family: var(--font-serif); letter-spacing: -.01em; }
.masthead { display: flex; align-items: end; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 28px 0 14px; border-bottom: 3px solid var(--ink); }
.masthead h1 { font: 800 clamp(34px, 5vw, 56px)/1 var(--font-display); letter-spacing: -.04em; }
.masthead time { font-size: 14px; color: var(--muted); }
.rule { height: 1px; background: var(--line); margin: 0; border: 0; }
.news-top { display: grid; gap: 28px; padding: 28px 0 40px; border-bottom: 1px solid var(--line); }
@media (min-width: 960px) { .news-top { grid-template-columns: 1.7fr 1fr; gap: 40px; } }
.lead-story .ph { border-radius: var(--r-lg); }
.lead-story h2 { margin-top: 16px; font: 700 clamp(28px, 3.6vw, 44px)/1.12 var(--font-serif); letter-spacing: -.02em; }
.lead-story h2 a { color: var(--ink); } .lead-story h2 a:hover { color: var(--accent); }
.lead-story p { margin: 14px 0 0; font-size: 18px; color: var(--muted); max-width: 680px; }
.byline { display: flex; align-items: center; gap: 8px; margin-top: 14px; font-size: 13px; color: var(--muted-2); flex-wrap: wrap; }
.byline .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--muted-2); }
.side-stories { display: grid; gap: 0; align-content: start; }
.side-story { display: grid; grid-template-columns: 1fr 112px; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line-soft); }
.side-story:first-child { padding-top: 0; } .side-story:last-child { border-bottom: 0; }
.side-story h3 { margin-top: 6px; font: 700 19px/1.3 var(--font-serif); letter-spacing: -.01em; } .side-story h3 a { color: var(--ink); } .side-story h3 a:hover { color: var(--accent); }
.side-story .ph { border-radius: var(--r-md); aspect-ratio: 1 / 1; }
.news-body { display: grid; gap: 40px; padding: 36px 0 64px; }
@media (min-width: 960px) { .news-body { grid-template-columns: 1fr 320px; gap: 56px; } }
.row-story { display: grid; grid-template-columns: 112px 1fr; gap: 16px; padding: 24px 0; border-bottom: 1px solid var(--line-soft); }
@media (min-width: 640px) { .row-story { grid-template-columns: 240px 1fr; gap: 24px; } }
.row-story .ph { border-radius: var(--r-md); aspect-ratio: 4 / 3; align-self: start; }
.row-story h3 { margin-top: 6px; font: 700 clamp(18px, 2vw, 24px)/1.28 var(--font-serif); letter-spacing: -.01em; } .row-story h3 a { color: var(--ink); } .row-story h3 a:hover { color: var(--accent); }
.row-story p { margin: 8px 0 0; color: var(--muted); font-size: 15px; display: none; } @media (min-width: 640px) { .row-story p { display: block; } }
.aside-box { padding: 24px; border: 1px solid var(--line-soft); border-radius: var(--r-xl); position: sticky; top: calc(var(--header-h) + 24px); }
.aside-box h4 { font-size: 15px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; padding-bottom: 14px; border-bottom: 2px solid var(--ink); }
.top-list { list-style: none; margin: 0; padding: 0; counter-reset: n; }
.top-list li { counter-increment: n; display: grid; grid-template-columns: 32px 1fr; gap: 8px; padding: 16px 0; border-bottom: 1px solid var(--line-soft); }
.top-list li:last-child { border-bottom: 0; }
.top-list li::before { content: counter(n); font: 800 26px/1 var(--font-display); color: var(--line); letter-spacing: -.04em; }
.top-list a { color: var(--ink); font: 600 16px/1.4 var(--font-serif); } .top-list a:hover { color: var(--accent); }
.pager { display: flex; justify-content: center; gap: 6px; flex-wrap: wrap; margin-top: 32px; }
.pager a { min-width: 40px; height: 40px; padding: 0 14px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: var(--r-md); font-weight: 600; color: var(--ink); }
.pager a:hover { border-color: var(--ink); }
.pager a.is-current { background: var(--ink); border-color: var(--ink); color: var(--bg); }

.wrap-art { width: min(1120px, 100% - var(--gutter) * 2); margin-inline: auto; }
.article-head { padding: 40px 0 8px; }
.article-head h1, .standfirst, .author { max-width: 820px; }
.article-head h1 { margin-top: 14px; font: 700 clamp(32px, 5vw, 56px)/1.1 var(--font-serif); letter-spacing: -.02em; }
.standfirst { margin: 18px 0 0; font: 400 clamp(19px, 2vw, 23px)/1.5 var(--font-serif); color: var(--muted); }
.author { display: flex; align-items: center; gap: 12px; margin-top: 24px; padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: 14px; }
.author .av { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--ink); }
.author .av img { width: 18px; height: auto; }
.author b { display: block; color: var(--ink); } .author span { color: var(--muted-2); }
.fig { margin: 28px auto 0; width: min(1120px, 100% - var(--gutter) * 2); }
.fig img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: var(--r-xl); }
.fig figcaption { margin-top: 10px; font-size: 13px; color: var(--muted-2); text-align: center; }
.article-grid { display: grid; gap: 48px; padding: 36px 0 72px; }
@media (min-width: 1100px) { .article-grid { grid-template-columns: minmax(0, 1fr) 320px; } }
.rich { font-size: 18px; line-height: 1.8; color: var(--body); }
.rich h2 { margin: 1.8em 0 .6em; font-size: 28px; letter-spacing: -.03em; } .rich h3 { margin: 1.6em 0 .5em; font-size: 22px; }
.rich ul, .rich ol { padding-left: 1.3em; } .rich li { margin: .4em 0; }
.rich img { border-radius: var(--r-lg); margin: 1.2em 0; }
.rich a { text-decoration: underline; text-underline-offset: 3px; }
.rich blockquote { margin: 1.4em 0; padding: .6em 1.2em; border-left: 3px solid var(--gold); color: var(--muted); font-family: var(--font-serif); font-size: 1.1em; }
.rich { overflow-x: auto; }
.rich table { font-size: 15px; margin: 1.4em 0; min-width: 480px; }
.rich .src { margin-top: 2em; padding-top: 1em; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted-2); }
.rich strong { color: var(--ink); }

/* ---------- Hỗ trợ ---------- */
.hub { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.hub-card { display: flex; flex-direction: column; gap: 10px; padding: 28px; border-radius: var(--r-2xl); background: var(--alt); color: var(--ink); transition: transform .3s, box-shadow .3s, background .3s; }
.hub-card:hover { transform: translateY(-4px); background: var(--surface); box-shadow: var(--shadow-md); color: var(--ink); }
.hub-card .ic { display: grid; place-items: center; width: 48px; height: 48px; border-radius: var(--r-lg); background: var(--ink); color: var(--bg); margin-bottom: 8px; }
.hub-card h3 { font-size: 20px; font-weight: 800; letter-spacing: -.03em; }
.hub-card p { margin: 0; color: var(--muted); font-size: 15px; }
.hub-card .go { margin-top: auto; padding-top: 12px; display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 14px; color: var(--accent); }
.sp-layout { display: grid; gap: 40px; padding: 40px 0 80px; }
.sp-layout > * { min-width: 0; }
@media (min-width: 960px) { .sp-layout { grid-template-columns: 260px minmax(0, 1fr); gap: 64px; } }
.sp-nav { position: sticky; top: calc(var(--header-h) + 24px); align-self: start; }
.sp-nav h4 { padding: 0 12px 10px; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-2); font-weight: 700; }
.sp-nav a { display: flex; align-items: center; gap: 10px; padding: 11px 12px; border-radius: var(--r-md); font-size: 15px; font-weight: 500; color: var(--ink); }
.sp-nav a:hover { background: var(--alt); color: var(--ink); }
.sp-nav a.is-active { background: var(--ink); color: var(--bg); }
.sp-nav .help { margin-top: 20px; padding: 20px; border-radius: var(--r-xl); background: var(--alt); }
.sp-nav .help b { display: block; margin-bottom: 6px; font-family: var(--font-display); }
.sp-nav .help p { font-size: 14px; color: var(--muted); }
.sp-nav .help a { padding: 0; font-weight: 700; color: var(--accent); }
@media (max-width: 959px) { .sp-nav { position: static; } .sp-nav .links { display: flex; gap: 8px; overflow-x: auto; } .sp-nav .links a { flex-shrink: 0; border: 1px solid var(--line); } .sp-nav .help { display: none; } }
.sp-content .rich { font-size: 17px; line-height: 1.75; }
.sp-content h1 { font-size: clamp(30px, 4vw, 44px); font-weight: 800; letter-spacing: -.04em; margin-bottom: 8px; }
.callout { display: flex; gap: 12px; margin: 0 0 28px; padding: 16px 18px; border-radius: var(--r-lg); background: var(--warn-soft); border: 1px solid var(--warn-border); color: var(--warn-ink); font-size: 14px; line-height: 1.55; }
.steps { list-style: none; margin: 1.4em 0; padding: 0; counter-reset: s; }
.steps li { counter-increment: s; position: relative; margin: 0; padding: 0 0 28px 64px; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: 0; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--ink); color: var(--bg); font: 700 17px var(--font-display); }
.steps li::after { content: ""; position: absolute; left: 21.5px; top: 52px; bottom: 6px; width: 1px; background: var(--line); }
.steps li:last-child { padding-bottom: 0; } .steps li:last-child::after { display: none; }
.steps h3 { font-size: 19px; margin: 8px 0 6px; } .steps p { margin: 0; color: var(--muted); font-size: 16px; }
.kpis { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); margin: 1.2em 0; }
.kpis > div { padding: 22px; border-radius: var(--r-xl); background: var(--alt); }
.kpis b { display: block; font: 800 34px/1 var(--font-display); letter-spacing: -.04em; } .kpis span { display: block; margin-top: 8px; font-size: 14px; color: var(--muted); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0; cursor: pointer; list-style: none; font: 600 18px/1.4 var(--font-display); letter-spacing: -.02em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 28px/1 var(--font-sans); color: var(--muted-2); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0 0 20px; color: var(--muted); }

/* ---------- Liên hệ ---------- */
.ct-grid { display: grid; gap: 0; border-radius: var(--r-2xl); overflow: hidden; border: 1px solid var(--line-soft); }
@media (min-width: 900px) { .ct-grid { grid-template-columns: 5fr 7fr; } }
.ct-panel { padding: 36px; background: var(--black); color: #fff; }
@media (min-width: 900px) { .ct-panel { padding: 48px; } }
.ct-panel h2 { color: #fff; font-size: 30px; font-weight: 800; letter-spacing: -.03em; }
.ct-panel p { color: var(--on-dark-muted); margin-top: 12px; }
.info-list { list-style: none; margin: 28px 0 0; padding: 0; display: grid; gap: 18px; }
.info-list li { display: flex; gap: 14px; align-items: flex-start; }
.info-list .ic { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--dark-line); color: #fff; flex-shrink: 0; }
.info-list a { color: #fff; font-weight: 600; } .info-list small { display: block; color: var(--on-dark-faint); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.ct-form { padding: 32px; background: var(--surface); }
@media (min-width: 900px) { .ct-form { padding: 48px; } }
.form { display: grid; gap: 18px; }
.form label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; }
.form input, .form select, .form textarea { height: 48px; padding: 0 14px; border: 1px solid var(--line); border-radius: var(--r-md); font: 400 16px var(--font-sans); color: var(--ink); background: var(--surface); transition: border-color .2s; }
.form textarea { height: auto; padding: 12px 14px; }
.form input:focus, .form select:focus, .form textarea:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 4px rgba(0, 113, 227, .15); }
.form-row { display: grid; gap: 16px; } @media (min-width: 640px) { .form-row { grid-template-columns: 1fr 1fr; } }
.req { color: #D70015; }
.notice { padding: 14px 16px; border-radius: var(--r-lg); margin-bottom: 16px; font-size: 15px; }
.notice ul { margin: 0; padding-left: 18px; }
.notice-ok { background: var(--ok-soft); color: var(--ok); } .notice-error { background: #FFECEE; color: #B0000F; }

/* ---------- CTA + footer ---------- */
.cta { background: var(--black); color: #fff; border-radius: var(--r-2xl); padding: 40px 28px; display: grid; gap: 24px; align-items: center; }
@media (min-width: 900px) { .cta { grid-template-columns: 1fr auto; padding: 64px; } }
.cta h2 { color: #fff; font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; letter-spacing: -.04em; }
.cta p { margin: 12px 0 0; color: var(--on-dark-muted); font-size: 17px; }
.ft { background: var(--alt); color: var(--muted); border-top: 1px solid var(--line-soft); }
.ft-in { display: grid; gap: 32px; padding: 56px 0 32px; }
@media (min-width: 768px) { .ft-in { grid-template-columns: 1.6fr 1fr 1fr 1fr; } }
.ft h4 { color: var(--ink); font-size: 13px; margin-bottom: 14px; letter-spacing: .08em; text-transform: uppercase; }
.ft a { color: var(--muted); } .ft a:hover { color: var(--ink); }
.ft ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; font-size: 14px; }
.ft-brand { display: flex; align-items: center; gap: 12px; margin: 0 0 14px; font: 700 20px var(--font-display); color: var(--ink); letter-spacing: -.03em; }
.ft-brand img { height: 28px; width: auto; }
.ft p { font-size: 14px; margin: 0 0 10px; }
.ft-bottom { border-top: 1px solid var(--line); padding: 20px 0 28px; font-size: 12px; color: var(--muted-2); }
.big-404 { font: 800 120px/1 var(--font-display); letter-spacing: -.06em; color: var(--ink); margin: 0 0 8px; }

/* Hero kiểu sáng (cho site nền sáng, vd xe hơi) */
.hero.light { background: var(--alt); color: var(--ink); }
.hero.light h1 { color: var(--ink); } .hero.light h1 span { color: var(--accent); } .hero.light .lead { color: var(--muted); }
.hero.light .hero-photo { border-color: var(--line); }
.hero.light .kpis-hero, .hero.light .kpis-hero > div, .hero.light .kpis-hero > div + div { border-color: var(--line); }
.hero.light .kpis-hero b { color: var(--ink); } .hero.light .kpis-hero span { color: var(--muted); }
.hero.light .eyebrow { color: var(--accent); } .hero.light .eyebrow::before { background: var(--accent); }

/* Bổ sung */
.brand-mark { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; background: var(--accent); color: #fff; }
.author .av .ico { color: var(--bg); }
.table-wrap { background: var(--surface); }
.colors { margin: 18px 0 0; font-size: 14px; color: var(--muted); } .colors span { font-weight: 600; color: var(--ink); }

/* Điểm nhấn riêng cho site gaming (nền tối) */
.plan.is-hot { background: var(--surface); border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), var(--shadow-lg); }
.plan.is-hot h3, .plan.is-hot .plan-price { color: var(--ink); }
.plan.is-hot .plan-desc { color: var(--muted); } .plan.is-hot .plan-features { border-color: var(--line-soft); }
.plan-tag { color: #fff; background: var(--accent); }
.hero h1 span { color: var(--accent); }
.btn-primary:hover { box-shadow: 0 0 0 4px rgba(255, 90, 31, .25); }
.tile.t-stat .big { color: var(--accent); }
.kpis-hero b { color: var(--ink); }
.eyebrow { color: var(--gold); } .eyebrow::before { background: var(--gold); }
.badge { background: var(--accent-soft); color: var(--accent); }
.badge-dark { background: rgba(255, 255, 255, .08); color: #fff; }
.hd { border-bottom-color: var(--line-soft); }
.rich, .sp-content .rich { color: var(--body); }
.rich table, th, td { border-color: var(--line-soft); }