/* Brand layer for de-phong-van-it-ngan-hang (kit/nhan-dien, Direction 2 "Interview Ready").
   One accent (emerald) + small orange highlight. No gradient/shadow (kit toi-gian). Dark mode is emerald-tinted, never black. */
:root {
  --accent: #059669; --accent-dark: #047857; --accent-soft: #ecfdf5;
  --hi: #f97316; --hi-soft: #fff7ed;
  --text: #111827; --muted: #6b7280; --bg: #f6faf8; --card: #ffffff; --line: #d9e7e0; --code: #eef4f1;
  --on-accent: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --accent: #34d399; --accent-dark: #6ee7b7; --accent-soft: #123a2f;
    --hi: #fb923c; --hi-soft: #3a2414;
    --text: #e8f3ee; --muted: #9db5ab; --bg: #0c1f1a; --card: #122b24; --line: #24463b; --code: #1a382f;
    --on-accent: #062018;
  }
}
:root[data-theme="dark"] {
  --accent: #34d399; --accent-dark: #6ee7b7; --accent-soft: #123a2f;
  --hi: #fb923c; --hi-soft: #3a2414;
  --text: #e8f3ee; --muted: #9db5ab; --bg: #0c1f1a; --card: #122b24; --line: #24463b; --code: #1a382f;
  --on-accent: #062018;
}
html, body { background: var(--bg); color: var(--text); }

.brand-bar { display: flex; align-items: center; gap: 10px; padding: 8px 0 12px; border-bottom: 1px solid var(--line); }
.brand-bar .logo { width: 36px; height: 36px; display: block; }
.brand-bar strong { font-size: 16px; }

.hero-intro { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 24px 0 8px; }
.hero-intro h1 { margin: 0; font-size: 28px; line-height: 1.25; }
.hero-intro .mascot { width: 132px; height: 132px; flex: 0 0 auto; }
@media (max-width: 600px) {
  .hero-intro { flex-direction: column-reverse; text-align: center; gap: 8px; }
  .hero-intro .mascot { width: 104px; height: 104px; }
}

.hero { background: var(--card); border: 2px solid var(--accent); border-radius: 16px; padding: 20px; margin: 16px 0 24px; }
.hero h2 { color: var(--accent); font-size: 20px; margin: 0 0 4px; }
.hero .step { border-left: 4px solid var(--hi); background: var(--hi-soft); padding: 8px 12px; border-radius: 4px; margin: 12px 0; }

.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
footer { border-top: 1px solid var(--line); padding-top: 16px; margin-top: 32px; }