:root{--bg-color: #fdfcfb;--paper-color: #fcfaf7;--primary-color: #a3734f;--text-main: #3d2b1f;--text-sub: #8c7e74;--accent-gold: #c8970a;--shadow-soft: 0 10px 40px rgba(163, 115, 79, .08);--radius-lg: 28px;--radius-md: 18px}body{margin:0;background-color:var(--bg-color);color:var(--text-main);font-family:-apple-system,PingFang SC,Microsoft YaHei,sans-serif;background-image:url(https://www.transparenttextures.com/patterns/paper-fibers.png);overflow-x:hidden}.app-container{max-width:500px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column;position:relative}.floating-elements{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0}.sparkle{position:absolute;color:var(--primary-color);filter:blur(.5px)}.loading-screen{height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;color:var(--primary-color);background:var(--bg-color)}.loading-book{filter:drop-shadow(0 4px 12px rgba(163,115,79,.2))}.loading-screen p{font-family:"Source Han Serif SC",serif;font-size:16px;letter-spacing:1px}.app-header{padding:24px;display:flex;justify-content:space-between;align-items:center;z-index:10;background:#fdfcfbcc;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);position:sticky;top:0}.header-left{display:flex;align-items:center;gap:14px}.logo-icon{color:var(--primary-color)}.title-group h1{font-family:"Source Han Serif SC","Noto Serif SC",serif;font-size:20px;margin:0;color:var(--text-main)}.cloud-badge{font-size:10px;color:#a8d5ba;display:block;font-weight:600}.streak-badge{display:flex;align-items:center;gap:6px;background:linear-gradient(135deg,var(--primary-color),#bc8a64);color:#fff;padding:6px 14px;border-radius:20px;font-size:12px;box-shadow:0 4px 12px #a3734f33}.content-area{flex:1;padding:16px 16px 100px;z-index:5}.btn-primary.main-add{width:100%;padding:18px;border-radius:var(--radius-lg);border:1px solid rgba(163,115,79,.1);background:#fff;color:var(--primary-color);font-size:16px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:10px;cursor:pointer;box-shadow:var(--shadow-soft);margin-bottom:24px}.kbd{font-size:10px;background:#f0ebe3;padding:2px 6px;border-radius:4px;margin-left:8px;color:var(--text-sub)}.diary-card{background:var(--paper-color);padding:24px;border-radius:var(--radius-md);margin-bottom:20px;box-shadow:var(--shadow-soft);border:1px solid rgba(163,115,79,.05);transition:transform .3s}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.date-tag{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-sub)}.card-actions{display:flex;align-items:center;gap:12px}.btn-icon.delete{background:none;border:none;color:#fca5a5;cursor:pointer;padding:4px;border-radius:50%;transition:background .2s}.btn-icon.delete:hover{background:#fee2e2;color:#ef4444}.entry-text{font-size:16px;line-height:1.8;color:var(--text-main);margin:0 0 16px;white-space:pre-wrap}.ai-reply{background:#c8970a0a;padding:14px;border-radius:14px;display:flex;gap:12px;border-left:3px solid var(--accent-gold)}.ai-avatar{font-size:18px}.ai-reply p{margin:0;font-size:14px;color:var(--text-sub);font-style:italic;line-height:1.6}.empty-state{text-align:center;padding:80px 20px;color:var(--text-sub)}.svg-decor{margin-bottom:24px;opacity:.2;color:var(--primary-color)}.empty-state h3{font-family:"Source Han Serif SC",serif;font-size:20px;margin-bottom:8px}.write-card{background:#fff;padding:28px;border-radius:var(--radius-lg);box-shadow:var(--shadow-soft)}.mood-selector{display:flex;justify-content:space-around;margin:16px 0 24px}.mood-btn{background:none;border:none;cursor:pointer;padding:8px;border-radius:12px;transition:background .2s}.mood-btn.active{background:#fdfcfb;box-shadow:inset 0 2px 4px #0000000d}textarea{width:100%;min-height:300px;border:1px solid #f0ebe3;border-radius:var(--radius-md);padding:20px;font-size:16px;line-height:1.8;resize:none;background:#faf9f7;transition:all .3s}textarea:focus{outline:none;border-color:var(--primary-color);background:#fff;box-shadow:0 0 0 4px #a3734f0d}.btn-save{width:100%;padding:18px;background:var(--primary-color);color:#fff;border:none;border-radius:40px;font-size:16px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:10px;cursor:pointer;box-shadow:0 6px 20px #a3734f4d;margin-top:24px}.kbd-light{font-size:10px;background:#fff3;padding:2px 6px;border-radius:4px}.chart-card{background:#fff;padding:28px;border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);text-align:center}.simple-chart{height:180px;display:flex;align-items:flex-end;justify-content:space-around;margin:40px 0;padding-bottom:20px;border-bottom:2px solid #f0ebe3}.chart-bar-wrap{display:flex;flex-direction:column;align-items:center;gap:8px;flex:1}.chart-bar{width:12px;background:linear-gradient(to top,var(--primary-color),var(--accent-gold));border-radius:6px 6px 0 0}.chart-label{font-size:10px;color:var(--text-sub)}.bottom-nav{position:fixed;bottom:24px;left:50%;transform:translate(-50%);width:90%;max-width:400px;height:68px;background:#3d2b1ff2;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:34px;display:flex;justify-content:space-around;align-items:center;z-index:100;box-shadow:0 12px 30px #00000040}.bottom-nav button{background:none;border:none;display:flex;flex-direction:column;align-items:center;gap:4px;color:#a38d7d;cursor:pointer}.bottom-nav button.active{color:#fdfcfb}.bottom-nav span{font-size:10px;font-weight:600}.toast-message{position:fixed;bottom:110px;left:50%;transform:translate(-50%);background:#3d2b1f;color:#fff;padding:12px 24px;border-radius:30px;display:flex;align-items:center;gap:10px;font-size:14px;box-shadow:0 10px 30px #0003;z-index:1000}