:root {
  --blue: #2f6bea;
  --blue-dark: #1f55c8;
  --blue-soft: #e8efff;
  --navy: #1b1d3a;
  --navy-deep: #15162e;
  --ink: #1c1d2b;
  --muted: #676b80;
  --line: #e6e8f0;
  --bg-alt: #f4f5f8;
  --radius: 14px;
  --shadow: 0 6px 20px rgba(24, 32, 70, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Nunito", "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1000px, 100% - 32px); margin-inline: auto; }
.center { text-align: center; margin-top: 28px; }

/* Top bar */
.topbar { background: var(--blue); color: #fff; font-size: .78rem; }
.topbar__inner { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; }
.topbar__contact { white-space: nowrap; }
.sep { display: inline-block; width: 1px; height: 10px; background: rgba(255,255,255,.5); margin: 0 12px; }

/* Header */
.header { position: sticky; top: 0; z-index: 50; background: #fff; border-bottom: 1px solid var(--line); }
.header__inner { display: flex; align-items: center; gap: 24px; height: 60px; }
.logo { font-weight: 800; font-size: 1.3rem; color: var(--blue); display: flex; align-items: center; gap: 8px; }
.logo img { height: 36px; width: auto; }
.logo--light { color: #fff; }
.nav { display: flex; gap: 4px; margin-inline: auto; }
.nav a { padding: 8px 12px; font-size: .92rem; color: #3b3e52; border-radius: 8px; }
.nav a:hover { color: var(--blue); background: var(--blue-soft); }
.nav .hot::after { content: " 💰"; }
.nav-toggle { display: none; border: 0; background: none; font-size: 1.5rem; cursor: pointer; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; border-radius: 8px; padding: 9px 16px; font-weight: 700; font-size: .9rem; cursor: pointer; border: 1px solid transparent; }
.btn--sm { padding: 6px 12px; font-size: .85rem; white-space: nowrap; }
.btn--primary { background: var(--blue); color: #fff; }
.btn--primary:hover { background: var(--blue-dark); }
.btn--ghost { color: #fff; border-color: rgba(255,255,255,.6); background: rgba(0,0,0,.15); }
.btn--ghost:hover { background: rgba(255,255,255,.15); }
.btn--outline { background: #fff; border-color: var(--line); color: var(--ink); box-shadow: 0 2px 6px rgba(0,0,0,.04); }
.btn--outline:hover { border-color: var(--blue); color: var(--blue); }

.badge { display: inline-block; font-size: .72rem; font-weight: 700; padding: 2px 10px; border-radius: 999px; background: #fff; color: var(--ink); }
.badge--hot { background: #ff4d4f; color: #fff; }

/* Hero */
.hero { position: relative; overflow: hidden; background: #222; }
.hero__track { display: flex; transition: transform .6s ease; }
.slide {
  min-width: 100%; height: clamp(320px, 36vw, 500px);
  display: flex; align-items: center; color: #fff;
  background-size: cover; background-position: center;
}
.slide__body { width: min(1000px, 100% - 32px); margin-inline: auto; }
.slide__title { font-size: clamp(2rem, 4.2vw, 3rem); margin: 12px 0 8px; line-height: 1.1; text-shadow: 0 2px 16px rgba(0,0,0,.4); }
.slide__text { margin: 0 0 22px; max-width: 520px; text-shadow: 0 1px 8px rgba(0,0,0,.5); }
.slide__actions { display: flex; gap: 10px; flex-wrap: wrap; }
.hero__dots { position: absolute; bottom: 14px; left: 0; right: 0; display: flex; justify-content: center; gap: 6px; }
.hero__dots button { width: 8px; height: 8px; border-radius: 999px; border: 0; background: rgba(255,255,255,.55); cursor: pointer; padding: 0; }
.hero__dots button.is-active { width: 24px; background: var(--blue); }

/* Sections */
.section { padding: 60px 0; }
.section--alt { background: var(--bg-alt); }
.section__head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 26px; }
.eyebrow { display: inline-block; font-size: .72rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; color: var(--blue); background: var(--blue-soft); padding: 2px 8px; border-radius: 6px; }
.section__title { margin: 6px 0 4px; font-size: clamp(1.5rem, 2.6vw, 2rem); }
.section__sub { margin: 0; color: var(--muted); }
.section__bar { display: block; width: 38px; height: 3px; background: var(--blue); border-radius: 3px; margin-top: 14px; }
.see-all { color: var(--blue); font-weight: 700; font-size: .9rem; white-space: nowrap; }

/* Chips + search */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.chip { border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 6px 14px; font-weight: 700; font-size: .82rem; color: #3b3e52; cursor: pointer; }
.chip.is-active { background: var(--blue); border-color: var(--blue); color: #fff; }
.search { display: flex; align-items: center; gap: 8px; max-width: 360px; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; color: var(--muted); margin-bottom: 20px; }
.search input { border: 0; outline: 0; flex: 1; font: inherit; background: transparent; }

/* Game cards */
.game-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 12px; }
.game { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform .2s; }
.game:hover { transform: translateY(-4px); }
.game__media { position: relative; aspect-ratio: 4 / 3; background: #8a8a8a center / cover no-repeat; }
.game__media .badge { position: absolute; top: 10px; left: 10px; }
.game__platforms { position: absolute; right: 8px; bottom: 8px; display: flex; gap: 4px; }
.game__platforms span { background: rgba(0,0,0,.65); color: #fff; font-size: .72rem; border-radius: 5px; padding: 2px 5px; }
.game__body { padding: 10px 12px 12px; }
.game__name { margin: 0 0 6px; font-weight: 800; font-size: .92rem; }
.tags { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 8px; }
.tag { background: var(--blue-soft); color: var(--blue); font-size: .68rem; font-weight: 700; padding: 1px 6px; border-radius: 4px; }
.game__meta { display: flex; justify-content: space-between; font-size: .75rem; color: var(--muted); }
.stars { color: #f5b301; letter-spacing: 1px; }
.empty { grid-column: 1 / -1; color: var(--muted); text-align: center; }

/* News */
.news { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
.news-main { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--line); }
.news-main__media { position: relative; aspect-ratio: 16 / 10; background: #7d7d7d center / cover no-repeat; display: flex; align-items: flex-end; }
.news-main__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,.7), transparent 55%); }
.news-main__cap { position: relative; z-index: 1; padding: 12px 14px; color: #fff; }
.news-main__cap h3 { margin: 6px 0 0; font-size: 1.1rem; }
.news-main__body { padding: 12px 14px 14px; }
.news-main__body p { margin: 0 0 12px; color: var(--muted); font-size: .9rem; }
.news-main__foot { display: flex; justify-content: space-between; font-size: .8rem; color: var(--muted); }
.news-main__foot a { color: var(--blue); font-weight: 700; }
.pill { display: inline-block; background: var(--blue); color: #fff; font-size: .7rem; font-weight: 700; padding: 1px 8px; border-radius: 999px; }
.pill--soft { background: var(--blue-soft); color: var(--blue); }
.news-list { display: grid; gap: 14px; }
.news-item { display: flex; gap: 12px; align-items: flex-start; padding: 8px; border-radius: 10px; }
.news-item:hover { background: var(--bg-alt); }
.news-item__thumb { width: 64px; height: 64px; flex: none; border-radius: 10px; background: #8a8a8a center / cover no-repeat; }
.news-item__meta { font-size: .7rem; color: var(--muted); display: flex; gap: 8px; align-items: center; }
.news-item h4 { margin: 4px 0 0; font-size: .9rem; }

/* Footer */
.footer { background: var(--navy); color: #b7b9d3; margin-top: 0; }
.footer__grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 36px; padding: 40px 0 28px; }
.footer__logos { display: flex; align-items: center; gap: 20px; margin-bottom: 14px; }
.warn18 { width: 150px; border-radius: 4px; background: #fff; }
.footer__brand strong { color: #fff; display: block; margin-bottom: 10px; }
.footer__brand p { margin: 0 0 8px; font-size: .88rem; }
.footer__legal { font-size: .78rem !important; opacity: .8; }
.footer__title { color: #fff; font-size: .9rem; text-transform: uppercase; letter-spacing: .04em; margin: 4px 0 14px; }
.footer__links { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; font-size: .88rem; }
.footer__links a:hover { color: #fff; }
.footer__contact { display: flex; flex-wrap: wrap; gap: 10px 26px; align-items: center; font-size: .8rem; border-top: 1px solid rgba(255,255,255,.1); padding: 18px 0; }
.socials { margin-left: auto; display: flex; gap: 8px; }
.socials a { width: 30px; height: 30px; border-radius: 50%; border: 1px solid rgba(255,255,255,.3); display: grid; place-items: center; font-size: .75rem; font-weight: 800; }
.socials a:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
.footer__bottom { background: var(--navy-deep); font-size: .78rem; }
.footer__bottom-inner { display: flex; justify-content: space-between; padding: 12px 0; }
.footer__bottom-links { display: flex; gap: 18px; }

@media (max-width: 860px) {
  .topbar__inner { flex-direction: column; gap: 2px; }
  .nav { display: none; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; background: #fff; padding: 10px 16px; border-bottom: 1px solid var(--line); }
  .nav.is-open { display: flex; }
  .nav-toggle { display: block; }
  .account { margin-left: auto; }
  .section__head { flex-direction: column; align-items: flex-start; }
  .news, .footer__grid { grid-template-columns: 1fr; }
  .socials { margin-left: 0; }
  .footer__bottom-inner { flex-direction: column; gap: 6px; }
}

/* Trang văn bản (chính sách, điều khoản, khiếu nại, câu hỏi thường gặp) */
.doc { padding: 40px 0 56px; background: var(--bg-alt, #f4f6fb); }
.doc__card { max-width: 860px; margin: 0 auto; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 36px 40px; line-height: 1.7; }
.doc__crumb { font-size: .85rem; color: var(--muted); margin-bottom: 10px; }
.doc__crumb a { color: var(--blue); }
.doc h1 { font-size: 1.7rem; margin: 0 0 6px; }
.doc__meta { color: var(--muted); font-size: .88rem; margin: 0 0 22px; }
.doc h2 { font-size: 1.15rem; margin: 28px 0 8px; padding-top: 6px; border-top: 1px solid var(--line); }
.doc h2:first-of-type { border-top: 0; }
.doc ul, .doc ol { padding-left: 22px; }
.doc li { margin: 4px 0; }
.doc a { color: var(--blue); }
.doc table { width: 100%; border-collapse: collapse; margin: 10px 0; font-size: .95rem; }
.doc th, .doc td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; vertical-align: top; }
.doc th { background: var(--bg-alt, #f4f6fb); width: 34%; }
.doc .note { background: #fff8e6; border: 1px solid #f3d27a; border-radius: 10px; padding: 12px 16px; }
.doc details { border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin: 10px 0; }
.doc details[open] { background: var(--bg-alt, #f4f6fb); }
.doc summary { cursor: pointer; font-weight: 600; }
.doc details p { margin: 10px 0 2px; }
@media (max-width: 860px) { .doc__card { padding: 24px 18px; border-radius: 0; border-left: 0; border-right: 0; } }