:root {
  --bg: #0c0e14;
  --bg-alt: #12151d;
  --card: #181c27;
  --border: #262b3a;
  --gold: #e8b84b;
  --gold-soft: #f5d894;
  --text: #e8e9ee;
  --text-dim: #9198ab;
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.55;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  transition: transform .15s ease, opacity .15s ease;
}
.btn:hover { transform: translateY(-1px); opacity: .92; }
.btn-primary {
  background: linear-gradient(135deg, var(--gold-soft), var(--gold));
  color: #211a06;
}
.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-block { display: block; text-align: center; width: 100%; }

.zalo-btn {
  background: var(--card);
  border: 1px solid var(--gold);
  color: var(--gold-soft);
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
}

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(12, 14, 20, .9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}
.brand {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .01em;
  white-space: nowrap;
}
.brand span { color: var(--gold); margin: 0 4px; }
.main-nav {
  display: flex;
  gap: 28px;
  flex: 1;
  justify-content: center;
}
.main-nav a {
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 600;
}
.main-nav a:hover { color: var(--gold-soft); }

/* ---- Hero ---- */
.hero {
  padding: 90px 0 70px;
  background:
    radial-gradient(ellipse at top, rgba(232,184,75,.10), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}
.hero-inner { text-align: center; }
.hero h1 {
  font-size: 40px;
  line-height: 1.25;
  font-weight: 800;
}
.hero h1 span { color: var(--gold-soft); font-size: 24px; display: inline-block; margin-top: 10px; font-weight: 700; }
.hero-sub {
  max-width: 620px;
  margin: 24px auto 0;
  color: var(--text-dim);
  font-size: 16px;
}
.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 32px;
  flex-wrap: wrap;
}
.hero-phone {
  margin-top: 22px;
  color: var(--text-dim);
  font-size: 14px;
}
.hero-phone strong { color: var(--gold-soft); font-size: 16px; }

/* ---- Sections ---- */
.section { padding: 76px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-title {
  font-size: 28px;
  font-weight: 800;
  text-align: center;
}
.section-sub {
  text-align: center;
  color: var(--text-dim);
  margin-top: 10px;
  font-size: 14px;
}
.table-cta { margin-top: 34px; }

/* ---- Tool cards ---- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 42px;
}
.tool-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
}
.tool-card h3 {
  font-size: 17px;
  color: var(--gold-soft);
  margin-bottom: 10px;
}
.tool-desc {
  color: var(--text-dim);
  font-size: 13.5px;
  flex: 1;
  margin-bottom: 18px;
}
.tool-price {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
}
.tool-price > div {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 8px;
  text-align: center;
}
.price-label {
  display: block;
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 4px;
}
.price-value { display: block; font-weight: 700; font-size: 15px; }
.price-highlight { color: var(--gold-soft); }

/* ---- VPS table ---- */
.table-scroll { overflow-x: auto; margin-top: 40px; }
.price-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  min-width: 640px;
}
.price-table th, .price-table td {
  padding: 14px 16px;
  text-align: center;
  font-size: 13.5px;
  white-space: nowrap;
}
.price-table th {
  background: #1e2333;
  color: var(--gold-soft);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 11.5px;
  letter-spacing: .03em;
}
.price-table td { border-top: 1px solid var(--border); color: var(--text); }
.price-table tbody tr:nth-child(even) { background: rgba(255,255,255,.02); }

/* ---- Policy ---- */
.policy-list {
  max-width: 700px;
  margin: 34px auto 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.policy-list li {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 14px;
  color: var(--text-dim);
}
.policy-list strong { color: var(--text); }

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 30px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---- Responsive ---- */
@media (max-width: 720px) {
  .main-nav { display: none; }
  .hero { padding: 60px 0 46px; }
  .hero h1 { font-size: 30px; }
  .hero h1 span { font-size: 19px; }
  .section { padding: 54px 0; }
}