:root{--bg: #f8fafc;--card: #ffffff;--text: #1e293b;--text-muted: #64748b;--border: #e2e8f0;--primary: #10b981;--primary-dark: #059669;--danger: #ef4444;--warning: #f59e0b;--shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);--shadow-lg: 0 10px 25px rgba(0,0,0,.08), 0 4px 10px rgba(0,0,0,.04);--radius: 14px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Roboto,sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;line-height:1.5}.app{max-width:480px;margin:0 auto;min-height:100vh;padding:20px 16px 80px;display:flex;flex-direction:column}.header{text-align:center;padding:20px 0 24px}.logo{font-size:44px;margin-bottom:8px}.header h1{font-size:26px;font-weight:700;background:linear-gradient(135deg,var(--primary),#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.subtitle{color:var(--text-muted);font-size:13px;margin-top:6px}.home{display:flex;flex-direction:column;gap:24px}.hero-card{background:var(--card);border-radius:var(--radius);padding:28px 22px;text-align:center;box-shadow:var(--shadow)}.hero-icon{font-size:48px;margin-bottom:12px}.hero-card h2{font-size:18px;margin-bottom:10px}.hero-card p{color:var(--text-muted);font-size:14px;line-height:1.6}.actions{display:flex;flex-direction:column;gap:12px}.btn{border:none;border-radius:12px;padding:14px 20px;font-size:15px;font-weight:600;cursor:pointer;transition:all .15s;display:inline-flex;align-items:center;justify-content:center;gap:6px}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-secondary{background:var(--card);color:var(--text);border:1.5px solid var(--border)}.btn-secondary:hover{border-color:var(--primary);color:var(--primary)}.btn-ghost{background:transparent;color:var(--text-muted);padding:8px 12px}.btn-ghost:hover{color:var(--text)}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.feature{background:var(--card);border-radius:12px;padding:16px 8px;text-align:center;box-shadow:var(--shadow)}.feature span{font-size:24px;display:block;margin-bottom:6px}.feature p{font-size:11px;color:var(--text-muted)}.camera-view{display:flex;flex-direction:column;gap:16px}.camera-frame{position:relative;background:#000;border-radius:var(--radius);overflow:hidden;aspect-ratio:3 / 4;display:flex;align-items:center;justify-content:center}.camera-frame video{width:100%;height:100%;object-fit:cover}.scan-guide{position:absolute;bottom:12px;left:50%;transform:translate(-50%);color:#fff;font-size:12px;background:#00000080;padding:6px 12px;border-radius:20px}.cam-error{color:#fff;text-align:center;padding:20px}.cam-error .hint{font-size:12px;opacity:.7;margin-top:8px}.camera-actions{display:flex;justify-content:space-between;align-items:center;padding:0 20px}.capture-btn{width:72px;height:72px;border-radius:50%;font-size:28px;padding:0;border:4px solid white;box-shadow:0 0 0 2px var(--primary)}.loading{text-align:center;padding:60px 20px;color:var(--text-muted)}.loading p{margin-top:16px;font-size:15px}.loading .hint{font-size:12px;margin-top:6px}.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;margin:0 auto;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.result{display:flex;flex-direction:column;gap:18px}.result-header{display:flex;justify-content:flex-start}.score-card{background:var(--card);border-radius:var(--radius);padding:24px;display:flex;align-items:center;justify-content:center;position:relative;box-shadow:var(--shadow);border-top:4px solid}.score-ring{display:block}.score-text{position:absolute;text-align:center}.score-number{font-size:38px;font-weight:800;line-height:1}.score-level{font-size:14px;font-weight:600;margin-top:4px}.product-name{background:var(--card);padding:12px 16px;border-radius:10px;font-weight:600;box-shadow:var(--shadow)}.summary{background:var(--card);padding:16px;border-radius:10px;font-size:14px;color:var(--text);box-shadow:var(--shadow)}.section h3{font-size:15px;margin-bottom:10px;padding-left:4px}.warnings{display:flex;flex-direction:column;gap:10px}.warning-item{background:var(--card);border-radius:10px;padding:14px;border-left:4px solid;box-shadow:var(--shadow)}.warning-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.warning-name{font-weight:600;font-size:15px}.warning-tag{color:#fff;font-size:11px;padding:3px 8px;border-radius:10px;font-weight:600}.warning-effect{font-size:13px;color:var(--text);margin-bottom:4px}.warning-suggestion{font-size:12px;color:var(--text-muted)}.ingredients{display:flex;flex-direction:column;gap:8px}.ingredient-item{background:var(--card);border:none;border-radius:10px;padding:12px 14px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;box-shadow:var(--shadow);transition:transform .1s;width:100%;text-align:left}.ingredient-item:hover{transform:translate(2px)}.ing-left{display:flex;align-items:center;gap:10px}.ing-dot{width:10px;height:10px;border-radius:50%}.ing-name{font-size:14px;font-weight:600}.ing-category{font-size:11px;color:var(--text-muted)}.ing-right{display:flex;align-items:center;gap:6px}.ing-safety{font-size:12px;font-weight:600}.ing-arrow{color:var(--text-muted);font-size:18px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:100;display:flex;align-items:flex-end;justify-content:center;animation:fade-in .2s}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.modal{background:var(--card);width:100%;max-width:480px;max-height:88vh;border-radius:20px 20px 0 0;display:flex;flex-direction:column;animation:slide-up .25s}@keyframes slide-up{0%{transform:translateY(100%)}to{transform:translateY(0)}}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border)}.modal-header h3{font-size:17px}.modal-close{background:var(--bg);border:none;width:32px;height:32px;border-radius:50%;cursor:pointer;font-size:14px}.modal-body{padding:16px 20px;overflow-y:auto}.modal-loading{text-align:center;padding:30px;color:var(--text-muted)}.modal-loading p{margin-top:12px;font-size:14px}.field{padding:12px 0;border-bottom:1px solid var(--border)}.field:last-child{border-bottom:none}.field-label{font-size:12px;color:var(--text-muted);margin-bottom:4px}.field-value{font-size:14px;line-height:1.5}.field-highlight .field-value{color:var(--danger);font-weight:500}.error{background:#fef2f2;color:var(--danger);padding:12px 14px;border-radius:10px;font-size:13px;margin-bottom:12px;border:1px solid #fecaca}.footer{margin-top:auto;padding-top:32px;text-align:center;font-size:11px;color:var(--text-muted);display:flex;flex-direction:column;gap:4px}.footer a{color:var(--primary);text-decoration:none}.footer .disclaimer{opacity:.7}@media (min-width: 600px){.app{padding:30px 20px 80px}}