:root {
  --bg: #FCF4E4;
  --bg-alt: #FFFBF2;
  --surface: #FFFFFF;
  --ink: #2C221E;
  --ink-soft: #5C4E47;
  --ink-muted: #7D6E65;
  --primary: #D96B27;
  --primary-hover: #BF591B;
  --primary-soft: #FFF0E3;
  --green: #2D6A4F;
  --green-soft: #E9F5EE;
  --amber: #E9A820;
  --amber-soft: #FFF7DE;
  --border: #EADBC4;
  --shadow: 0 12px 32px rgba(44, 34, 30, 0.07);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --font-sans: 'Plus Jakarta Sans', 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
body { background: var(--bg); color: var(--ink); overflow-x: hidden; }

/* Orthogonal Region (IP-based, invisible to user) vs UI Language (Pure VI/EN translation) */
html[data-region="vn"] .region-intl { display: none !important; }
html[data-region="intl"] .region-vn { display: none !important; }
html[data-lang="vi"] .lang-en { display: none !important; }
html[data-lang="en"] .lang-vi { display: none !important; }

.container { max-width: 1220px; margin: 0 auto; padding: 0 20px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(252, 244, 228, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 14px;
  flex-wrap: nowrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  flex-shrink: 0;
  white-space: nowrap;
}
.brand-logo {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  border: 2px solid var(--primary);
  object-fit: cover;
  background: #FFF6E6;
  flex-shrink: 0;
}
.brand-title { font-size: 1.32rem; font-weight: 800; letter-spacing: -0.02em; line-height: 1.15; color: var(--ink); display: block; white-space: nowrap; }
.brand-sub { display: block; font-size: 0.75rem; font-weight: 600; color: var(--ink-soft); white-space: nowrap; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: nowrap;
  white-space: nowrap;
}
.nav-links a {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 700;
  font-size: 0.9rem;
  white-space: nowrap;
  flex-shrink: 0;
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--primary); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  flex-wrap: nowrap;
  white-space: nowrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 20px;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.92rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: transform 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #FFFFFF; box-shadow: 0 6px 18px rgba(217, 107, 39, 0.25); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-outline { background: var(--surface); color: var(--ink); border: 1.5px solid var(--border); }
.btn-sm { padding: 8px 14px; font-size: 0.84rem; }

.hero { padding: 36px 0 52px; }
.hero-grid { display: grid; grid-template-columns: 1.02fr 1.18fr; gap: 34px; align-items: start; }
.kebu-welcome {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 26px;
  padding: 12px 22px 12px 12px;
  margin-bottom: 22px;
  box-shadow: 0 10px 26px rgba(44, 34, 30, 0.06);
}
.kebu-avatar { width: 120px; height: 120px; border-radius: 20px; object-fit: cover; flex-shrink: 0; border: 2px solid #F2D8AC; }
.kebu-speech strong { display: block; font-size: 1.06rem; color: var(--primary); margin-bottom: 4px; }
.kebu-speech span { font-size: 0.95rem; color: var(--ink-soft); line-height: 1.45; display: block; }