:root{--sea: #0d4453;--sea-dark: #093442;--sea-deep: #062631;--sea-soft: #e8f1f2;--gold: #c2a45c;--gold-bright: #ddc084;--gold-soft: #f7f1e1;--gold-ink: #8a6f33;--sunset: #e8927c;--ink: #16262b;--ink-soft: #46585e;--muted: #5e6f74;--line: #e3e1d6;--cream: #faf9f4;--surface: #ffffff;--zalo: #0068ff;--font-sans: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-display: "Tenor Sans", "Be Vietnam Pro", Georgia, serif;--container: 1200px;--radius: 16px;--radius-sm: 10px;--shadow-sm: 0 1px 3px rgba(9, 42, 52, .07), 0 1px 2px rgba(9, 42, 52, .05);--shadow: 0 8px 28px rgba(9, 42, 52, .1);--shadow-lg: 0 22px 60px rgba(9, 42, 52, .16);--header-h: 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