*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #4a90d9;--primary-light: #e8f0fe;--accent: #f5a623;--bg: #fdfcf9;--card-bg: #ffffff;--text: #2c3e50;--text-secondary: #5a6c7d;--border: #e8e3dc;--shadow: 0 2px 12px rgba(0, 0, 0, .06);--radius: 10px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);line-height:1.8;min-height:100vh}.app{display:flex;flex-direction:column;min-height:100vh}.navbar{background:var(--card-bg);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:0 1px 4px #0000000a}.nav-inner{max-width:1100px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:56px}.nav-brand{font-size:1.1rem;font-weight:700;color:var(--primary);text-decoration:none;white-space:nowrap}.nav-links{display:flex;gap:4px;flex-wrap:wrap;justify-content:flex-end}.nav-link{text-decoration:none;color:var(--text-secondary);font-size:.85rem;padding:6px 12px;border-radius:6px;transition:all .2s;white-space:nowrap}.nav-link:hover{background:var(--primary-light);color:var(--primary)}.nav-link.active{background:var(--primary);color:#fff}.main-content{max-width:900px;width:100%;margin:0 auto;padding:32px 24px 60px;flex:1}.footer{text-align:center;padding:24px;color:var(--text-secondary);font-size:.85rem;border-top:1px solid var(--border)}.page-header{text-align:center;margin-bottom:36px;padding-top:12px}.page-header h1{font-size:1.8rem;color:var(--primary);margin-bottom:8px}.page-header .subtitle{color:var(--text-secondary);font-size:.95rem}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);padding:28px 32px;margin-bottom:20px;box-shadow:var(--shadow)}.card h2{font-size:1.25rem;color:var(--primary);margin-bottom:12px;padding-bottom:8px;border-bottom:2px solid var(--primary-light)}.card h3{font-size:1.05rem;color:var(--text);margin:16px 0 8px}.card p{margin-bottom:12px;color:var(--text)}.card ul{padding-left:24px;margin-bottom:12px}.card li{margin-bottom:6px}.highlight-box{background:var(--primary-light);border-left:4px solid var(--accent);padding:16px 20px;border-radius:0 var(--radius) var(--radius) 0;margin:20px 0}.highlight-box p{margin:0;font-weight:500}.home-hero{text-align:center;padding:48px 0 36px}.home-hero .hero-icon{font-size:4rem;margin-bottom:16px}.home-hero h1{font-size:2rem;color:var(--primary);margin-bottom:12px}.home-hero p{color:var(--text-secondary);font-size:1.05rem;max-width:600px;margin:0 auto}.home-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:12px}.home-card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-decoration:none;color:var(--text);transition:all .2s;box-shadow:var(--shadow)}.home-card:hover{transform:translateY(-2px);box-shadow:0 4px 20px #0000001a;border-color:var(--primary)}.home-card .card-icon{font-size:2rem;margin-bottom:10px}.home-card h3{font-size:1rem;color:var(--primary);margin-bottom:6px}.home-card p{font-size:.85rem;color:var(--text-secondary)}.diary-header-actions{display:flex;justify-content:flex-end;margin-bottom:20px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 20px;border:none;border-radius:6px;font-size:.9rem;cursor:pointer;transition:all .2s;font-family:inherit}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:#3a7bc8}.btn-secondary{background:var(--border);color:var(--text)}.btn-secondary:hover{background:#d5cfc6}.btn-danger{background:#e74c3c;color:#fff}.btn-danger:hover{background:#c0392b}.btn-sm{padding:4px 12px;font-size:.8rem}.diary-list{display:flex;flex-direction:column;gap:12px}.diary-item{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow);cursor:pointer;transition:all .2s}.diary-item:hover{border-color:var(--primary);box-shadow:0 4px 16px #00000014}.diary-item-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.diary-item-title{font-size:1.05rem;font-weight:600;color:var(--text)}.diary-item-date{font-size:.8rem;color:var(--text-secondary)}.diary-item-preview{font-size:.9rem;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.diary-item-mood{display:inline-block;font-size:.8rem;color:var(--accent);margin-top:6px}.empty-state{text-align:center;padding:60px 20px;color:var(--text-secondary)}.empty-state .empty-icon{font-size:3rem;margin-bottom:12px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:200;padding:24px}.modal{background:var(--card-bg);border-radius:var(--radius);width:100%;max-width:650px;max-height:85vh;overflow-y:auto;padding:32px;box-shadow:0 8px 40px #0003}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.modal-header h2{font-size:1.3rem;color:var(--primary)}.modal-close{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-secondary);padding:4px 8px;border-radius:4px}.modal-close:hover{background:var(--border)}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:.9rem;font-weight:600;margin-bottom:6px;color:var(--text)}.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:6px;font-size:.9rem;font-family:inherit;color:var(--text);background:#fafaf8;transition:border-color .2s}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);background:#fff}.form-group textarea{resize:vertical;min-height:200px}.form-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}.diary-detail-meta{display:flex;gap:16px;color:var(--text-secondary);font-size:.85rem;margin-bottom:16px}.diary-detail-content{line-height:2;white-space:pre-wrap}.diary-detail-actions{display:flex;gap:10px;margin-top:24px;padding-top:16px;border-top:1px solid var(--border)}@media (max-width: 768px){.nav-inner{flex-direction:column;height:auto;padding:12px 16px;gap:8px}.nav-links{justify-content:center}.nav-link{font-size:.75rem;padding:4px 8px}.main-content{padding:20px 16px 40px}.home-hero h1{font-size:1.5rem}.page-header h1{font-size:1.4rem}.card{padding:20px}.home-grid{grid-template-columns:1fr}.modal{padding:20px}}