:root{--primary: #4CAF50;--primary-dark: #388E3C;--primary-light: #A5D6A7;--primary-bg: #E8F5E9;--danger: #E53935;--danger-bg: #FFEBEE;--warning: #F57C00;--warning-bg: #FFF3E0;--info: #1E88E5;--info-bg: #E3F2FD;--bg: #F8FAFC;--surface: #FFFFFF;--text: #1E293B;--text-secondary: #64748B;--text-muted: #94A3B8;--border: #E2E8F0;--radius-sm: 8px;--radius: 14px;--radius-lg: 20px;--shadow-sm: 0 1px 3px rgba(0,0,0,.06);--shadow: 0 2px 12px rgba(0,0,0,.06);--shadow-md: 0 4px 20px rgba(0,0,0,.08);--shadow-lg: 0 8px 32px rgba(0,0,0,.1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;min-height:100vh;min-height:100dvh;line-height:1.5}.app{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}.navbar{background:#ffffffd9;backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);padding:12px 20px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.navbar-brand{display:flex;align-items:center;gap:8px;font-size:21px;font-weight:700;color:var(--text);text-decoration:none;letter-spacing:-.3px}.navbar-brand span{background:linear-gradient(135deg,var(--primary),#2E7D32);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{display:flex;gap:4px}.nav-link{padding:7px 14px;border-radius:10px;font-size:14px;font-weight:500;color:var(--text-secondary);text-decoration:none;transition:all .2s}.nav-link:hover,.nav-link.active{background:var(--primary-bg);color:var(--primary-dark)}.bottom-nav{position:fixed;bottom:0;left:0;right:0;background:#ffffffe6;backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border-top:1px solid var(--border);display:flex;justify-content:space-around;padding:6px 0 env(safe-area-inset-bottom,16px);z-index:100}.bottom-nav-item{display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 14px;color:var(--text-muted);text-decoration:none;font-size:11px;font-weight:500;transition:all .2s;position:relative}.bottom-nav-item.active{color:var(--primary)}.bottom-nav-item.active:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:24px;height:3px;border-radius:0 0 3px 3px;background:var(--primary)}.bottom-nav-item .icon{font-size:22px;line-height:1}.page{flex:1;padding:20px 20px 90px;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.card{background:var(--surface);border-radius:var(--radius);padding:20px;margin-bottom:14px;box-shadow:var(--shadow);border:1px solid var(--border);transition:box-shadow .2s}.card:hover{box-shadow:var(--shadow-md)}.card-header{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;letter-spacing:-.2px}.score-circle{width:130px;height:130px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;margin:0 auto;font-weight:700;color:#fff;position:relative;box-shadow:0 8px 32px #0003}.score-circle:after{content:"";position:absolute;top:-6px;right:-6px;bottom:-6px;left:-6px;border-radius:50%;border:2px solid rgba(255,255,255,.3)}.score-circle .score-num{font-size:46px;line-height:1;letter-spacing:-2px}.score-circle .score-label{font-size:15px;opacity:.9;font-weight:600}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:11px 22px;border-radius:12px;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:all .2s;text-decoration:none;letter-spacing:-.2px}.btn:active{transform:scale(.97)}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 2px 8px #4caf504d}.btn-primary:hover{background:var(--primary-dark);box-shadow:0 4px 12px #4caf5066}.btn-danger{background:var(--danger);color:#fff}.btn-outline{background:transparent;border:1.5px solid var(--border);color:var(--text)}.btn-outline:hover{background:var(--bg)}.btn-sm{padding:7px 15px;font-size:13px;border-radius:8px}.btn-lg{padding:15px 28px;font-size:17px;border-radius:14px;width:100%}.scan-btn-wrap{text-align:center;margin:36px auto}.scan-btn{width:148px;height:148px;border-radius:50%;background:linear-gradient(135deg,#4caf50,#2e7d32);color:#fff;border:none;font-size:18px;font-weight:700;cursor:pointer;position:relative;box-shadow:0 8px 32px #4caf5059;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px}.scan-btn:before{content:"";position:absolute;top:-10px;right:-10px;bottom:-10px;left:-10px;border-radius:50%;border:2px solid rgba(76,175,80,.2);animation:pulse 2.5s ease-out infinite}.scan-btn:after{content:"";position:absolute;top:-20px;right:-20px;bottom:-20px;left:-20px;border-radius:50%;border:1px solid rgba(76,175,80,.1);animation:pulse 2.5s ease-out .5s infinite}.scan-btn:hover{transform:scale(1.04);box-shadow:0 12px 40px #4caf5073}.scan-btn:active{transform:scale(.95)}.scan-btn .scan-icon{font-size:40px;line-height:1}@keyframes pulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.06);opacity:.3}}.barcode-input-group{display:flex;gap:8px;margin-top:16px}.barcode-input{flex:1;padding:13px 18px;border:2px solid var(--border);border-radius:12px;font-size:16px;outline:none;transition:all .2s;background:#f8fafc;letter-spacing:1px}.barcode-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4caf501a;background:#fff}.search-box{display:flex;gap:8px;margin-bottom:16px}.search-input{flex:1;padding:12px 16px;border:2px solid var(--border);border-radius:12px;font-size:15px;outline:none;background:#f8fafc;transition:all .2s}.search-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4caf501a;background:#fff}.cat-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.cat-chip{padding:7px 16px;border-radius:20px;font-size:13px;font-weight:500;border:1.5px solid var(--border);background:var(--surface);cursor:pointer;transition:all .2s;color:var(--text-secondary)}.cat-chip:hover{border-color:var(--primary);color:var(--primary)}.cat-chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}.product-name{font-size:22px;font-weight:700;margin:14px 0 6px;letter-spacing:-.3px}.product-meta{font-size:14px;color:var(--text-secondary)}.breakdown-item{margin-bottom:12px}.breakdown-label{display:flex;justify-content:space-between;font-size:13px;font-weight:500;margin-bottom:6px;color:var(--text-secondary)}.breakdown-bar{height:10px;border-radius:5px;background:#e2e8f0;overflow:hidden}.breakdown-fill{height:100%;border-radius:5px;transition:width .6s cubic-bezier(.4,0,.2,1)}.tag-list{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}.tag{padding:5px 13px;border-radius:20px;font-size:12px;font-weight:600}.tag-red{background:#ffebee;color:#c62828}.tag-orange{background:#fff3e0;color:#e65100}.tag-yellow{background:#fffde7;color:#f9a825}.tag-green{background:var(--primary-bg);color:var(--primary-dark)}.tag-gray{background:#f1f5f9;color:#475569}.alt-card{display:flex;align-items:center;gap:14px;padding:14px;background:var(--surface);border-radius:var(--radius);margin-bottom:10px;border:1px solid var(--border);transition:all .2s;cursor:pointer}.alt-card:hover{border-color:var(--primary-light);box-shadow:var(--shadow-md);transform:translateY(-1px)}.alt-score{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px;color:#fff;flex-shrink:0;box-shadow:0 2px 8px #00000026}.alt-info{flex:1;min-width:0}.alt-name{font-size:15px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.alt-brand{font-size:12px;color:var(--text-secondary);margin-top:2px}.alt-price{font-size:14px;color:var(--danger);font-weight:700}.compare-grid{display:grid;grid-template-columns:100px 1fr 1fr;gap:0;font-size:13px;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.compare-grid>*{padding:12px 14px;border-bottom:1px solid var(--border)}.compare-dim{font-weight:600;background:#f8fafc;color:var(--text-secondary)}.compare-winner{background:var(--primary-bg);color:var(--primary-dark);font-weight:700}.history-item{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--border);cursor:pointer;transition:background .15s}.history-item:hover{background:#f8fafc;margin:0 -20px;padding:14px 20px}.history-score{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;color:#fff;flex-shrink:0;box-shadow:0 2px 6px #0000001f}.history-info{flex:1}.history-name{font-size:15px;font-weight:600}.history-meta{font-size:12px;color:var(--text-secondary);margin-top:2px}.profile-avatar{width:80px;height:80px;border-radius:50%;background:linear-gradient(135deg,#4caf50,#2e7d32);display:flex;align-items:center;justify-content:center;font-size:36px;margin:0 auto 14px;box-shadow:0 4px 16px #4caf504d;color:#fff}.member-card{display:flex;align-items:center;gap:14px;padding:14px;background:var(--bg);border-radius:var(--radius);margin-bottom:8px;border:1px solid var(--border);transition:all .2s}.member-avatar{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;flex-shrink:0}.member-info{flex:1}.member-name{font-size:15px;font-weight:600}.member-detail{font-size:12px;color:var(--text-secondary);margin-top:2px}.alert{padding:13px 16px;border-radius:12px;margin-bottom:14px;font-size:14px;font-weight:500;display:flex;align-items:center;gap:8px}.alert-danger{background:var(--danger-bg);color:var(--danger)}.alert-warning{background:var(--warning-bg);color:var(--warning)}.alert-info{background:var(--info-bg);color:var(--info)}.alert-success{background:var(--primary-bg);color:var(--primary-dark)}.tabs{display:flex;gap:4px;margin-bottom:18px;background:#f1f5f9;border-radius:14px;padding:5px}.tab{flex:1;padding:10px 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#4caf501a}.health-tip-icon{font-size:30px}.health-tip-text{font-size:14px;color:var(--primary-dark);line-height:1.6;flex:1;font-weight:500}.scanner-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000f5;z-index:200;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px}.scanner-close{position:absolute;top:20px;right:20px;color:#fff;font-size:28px;background:none;border:none;cursor:pointer;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#ffffff1a}.scanner-text{color:#ffffffb3;margin-top:16px;font-size:14px}.nutrient-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.nutrient-item{background:#f8fafc;border-radius:12px;padding:14px;text-align:center;border:1px solid var(--border)}.nutrient-value{font-size:22px;font-weight:700;color:var(--text)}.nutrient-label{font-size:12px;color:var(--text-secondary);margin-top:4px}.additive-item{border-bottom:1px solid 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translateY(0)}}.modal-title{font-size:19px;font-weight:700;margin-bottom:20px;letter-spacing:-.3px}.form-group{margin-bottom:16px}.form-label{font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:6px;display:block}.form-input,.form-select{width:100%;padding:12px 15px;border:1.5px solid var(--border);border-radius:12px;font-size:15px;outline:none;background:#f8fafc;transition:all .2s}.form-input:focus,.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4caf5014;background:#fff}.modal-actions{display:flex;gap:10px;margin-top:24px;justify-content:flex-end}.loading{text-align:center;padding:60px;color:var(--text-secondary)}.spinner{width:44px;height:44px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;margin:0 auto 16px}@keyframes spin{to{transform:rotate(360deg)}}.result-header{text-align:center;padding:24px 0 16px}@media (min-width: 1024px){.app{flex-direction:row}.navbar{display:none}.page{padding:28px 40px 32px;max-width:900px;margin:0 auto}.bottom-nav{position:fixed;left:0;top:0;bottom:0;width:210px;height:100vh;flex-direction:column;justify-content:flex-start;padding:80px 0 0;border-right:1px solid var(--border);border-top:none}.bottom-nav-item{flex-direction:row;gap:12px;padding:13px 24px;font-size:15px;width:100%}.bottom-nav-item .icon{font-size:22px}.bottom-nav-item.active:before{display:none}.bottom-nav-item.active:after{content:"";position:absolute;right:0;top:6px;bottom:6px;width:3px;border-radius:3px 0 0 3px;background:var(--primary)}.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.compare-grid{grid-template-columns:150px 1fr 1fr 1fr}.nutrient-grid{grid-template-columns:repeat(4,1fr)}}@media (min-width: 768px) and (max-width: 1023px){.page{max-width:720px;margin:0 auto;padding:24px 24px 90px}.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.nutrient-grid{grid-template-columns:repeat(4,1fr)}}@media (min-width: 768px){.barcode-input-group{max-width:500px;margin-left:auto;margin-right:auto}}