*{box-sizing:border-box;margin:0;padding:0}:root{--primary:#667eea;--primary-dark:#764ba2;--text:#333;--text-light:#666;--bg:#f8f9fa;--border:#e0e0e0;--success:#51cf66;--warning:#ffa94d;--danger:#ff6b6b;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px}[data-theme=dark]{--bg:#1a1a1a;--text:#f0f0f0;--text-light:#aaa;--border:#333}body{background:linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);justify-content:center;align-items:center;min-height:100vh;padding:20px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex}.app{justify-content:center;width:100%;display:flex}.phone-frame{background:var(--bg);border:12px solid #000;border-radius:40px;flex-direction:column;width:390px;height:844px;display:flex;overflow:hidden;box-shadow:0 20px 60px #0000004d}.status-bar{background:linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);color:#fff;justify-content:space-between;align-items:center;height:44px;padding:0 16px;font-size:12px;font-weight:600;display:flex}.content-area{background:var(--bg);scroll-behavior:smooth;flex:1;overflow-y:auto}.screen{flex-direction:column;min-height:100%;padding:16px;animation:.3s ease-in fadeIn;display:flex}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.header{background:linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);color:#fff;border-radius:var(--radius-lg);margin:-16px -16px 20px;padding:24px 16px}.header-title{margin-bottom:4px;font-size:28px;font-weight:700}.header-desc{opacity:.95;font-size:13px}.card{background:var(--bg);border-radius:var(--radius-lg);border:2px solid var(--border);cursor:pointer;margin-bottom:12px;padding:16px;transition:all .3s}.card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 4px 12px 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