:root{--navy: #0f1b35;--navy-mid: #1a2d52;--navy-light: #243660;--gold: #c9a84c;--gold-light: #e8c97a;--cream: #f5f0e8;--cream-dark: #ede5d4;--red: #c0392b;--text-dark: #1a1a2e;--text-mid: #4a5568;--text-light: #718096;--white: #ffffff;--shadow: 0 4px 24px rgba(15,27,53,.15);--radius: 10px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:DM Sans,sans-serif;background:var(--cream);color:var(--text-dark);min-height:100vh}header{background:var(--navy);color:var(--white);padding:0;position:sticky;top:0;z-index:100;box-shadow:0 2px 20px #0000004d}.header-top{display:flex;align-items:center;gap:12px;padding:10px 20px;border-bottom:1px solid rgba(201,168,76,.3)}.header-stats{display:flex;gap:20px;font-size:.72rem;color:#ffffff80;text-align:right}.header-stats span{display:flex;flex-direction:column;align-items:flex-end}.header-stats strong{font-size:1.1rem;color:var(--gold);font-weight:600}.header-search{flex:1;position:relative;min-width:0}.header-search 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rgba(0,0,0,.08)}.letter-card-greeting{font-weight:600;font-size:.95rem;color:var(--navy);margin:12px 0 8px}.letter-card-para{font-size:.9rem;line-height:1.6;color:#333;margin:0 0 10px}