:root{--primary:#ff6b35;--primary-light:#ff8f65;--secondary:#4ecdc4;--bg:#fff8f0;--card-bg:#fff;--text:#2d2d2d;--text-light:#888;--border:#f0e6dc;--shadow:0 2px 12px #ff6b3514;--radius:16px;--radius-sm:10px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans SC,sans-serif}a{color:inherit;text-decoration:none}.navbar{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);z-index:100;background:#fff8f0f2;position:fixed;top:0;left:0;right:0}.navbar-inner{align-items:center;gap:32px;max-width:1100px;height:64px;margin:0 auto;padding:0 24px;display:flex}.navbar-brand{color:var(--primary);white-space:nowrap;font-size:22px;font-weight:700}.navbar-links{gap:24px;display:flex}.navbar-links a{color:var(--text);border-radius:var(--radius-sm);padding:6px 12px;font-size:15px;transition:all .2s}.navbar-links a:hover{background:var(--primary);color:#fff}.navbar-user{align-items:center;gap:16px;margin-left:auto;display:flex}.navbar-user span{color:var(--text-light);font-size:14px}.btn-logout{border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;background:0 0;padding:6px 16px;font-size:13px;transition:all .2s}.btn-logout:hover{border-color:var(--primary);color:var(--primary)}.auth-page{background:linear-gradient(135deg,#fff8f0 0%,#ffe8d6 100%);justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.auth-card{background:var(--card-bg);border-radius:var(--radius);width:100%;max-width:420px;box-shadow:var(--shadow), 0 8px 32px #ff6b351a;padding:40px}.auth-header{text-align:center;margin-bottom:32px}.auth-icon{margin-bottom:8px;font-size:48px;display:block}.auth-header h1{color:var(--primary);font-size:28px}.auth-header p{color:var(--text-light);margin-top:4px}.form-group{margin-bottom:20px}.form-group label{color:var(--text);margin-bottom:6px;font-size:14px;font-weight:600;display:block}.form-group input{border:2px solid var(--border);border-radius:var(--radius-sm);outline:none;width:100%;padding:12px 16px;font-size:15px;transition:border-color .2s}.form-group input:focus{border-color:var(--primary)}.form-error{color:#e44;border-radius:var(--radius-sm);background:#fff0f0;border:1px solid #ffd0d0;margin-bottom:16px;padding:10px 16px;font-size:14px}.btn-primary{background:var(--primary);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;width:100%;padding:14px;font-size:16px;font-weight:600;transition:all .2s}.btn-primary:hover{background:var(--primary-light);transform:translateY(-1px)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.auth-footer{text-align:center;color:var(--text-light);margin-top:24px;font-size:14px}.auth-footer a{color:var(--primary);font-weight:600}.home-page{max-width:800px;margin:0 auto;padding:60px 24px}.hero-section{text-align:center;margin-bottom:48px}.hero-title{color:var(--primary);flex-direction:column;gap:8px;font-size:42px;font-weight:800;display:flex}.hero-subtitle{color:var(--text-light);font-size:16px;font-weight:400}.search-section{margin-bottom:48px}.search-form{margin-bottom:20px}.search-input-wrapper{background:var(--card-bg);box-shadow:var(--shadow);border:2px solid var(--border);border-radius:50px;gap:12px;padding:6px;transition:border-color .2s;display:flex}.search-input-wrapper:focus-within{border-color:var(--primary)}.search-input{background:0 0;border:none;outline:none;flex:1;padding:14px 20px;font-size:15px}.search-btn{background:var(--primary);color:#fff;cursor:pointer;white-space:nowrap;border:none;border-radius:50px;padding:12px 32px;font-size:15px;font-weight:600;transition:all .2s}.search-btn:hover{background:var(--primary-light)}.search-btn:disabled{opacity:.6;cursor:not-allowed}.search-error{color:#e44;text-align:center;margin-top:8px;font-size:14px}.platform-badges{flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:16px;display:flex}.platform-badge{border:1.5px solid;border-radius:50px;padding:6px 14px;font-size:13px;font-weight:500}.examples{flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;display:flex}.examples-label{color:var(--text-light);font-size:13px}.example-link{border:1px dashed var(--border);border-radius:var(--radius-sm);cursor:pointer;color:var(--text-light);background:0 0;padding:6px 14px;font-size:13px;transition:all .2s}.example-link:hover{border-color:var(--primary);color:var(--primary)}.how-it-works{text-align:center}.how-it-works h2{color:var(--text);margin-bottom:32px;font-size:24px}.steps{flex-wrap:wrap;justify-content:center;align-items:flex-start;gap:16px;display:flex}.step{flex:1;min-width:180px;max-width:220px}.step-icon{margin-bottom:12px;font-size:36px}.step h3{margin-bottom:6px;font-size:16px}.step p{color:var(--text-light);font-size:13px;line-height:1.6}.step-arrow{color:var(--primary);padding-top:32px;font-size:28px}.result-page{max-width:800px;margin:0 auto;padding:24px}.back-link{color:var(--text-light);margin-bottom:16px;font-size:14px;transition:color .2s;display:inline-block}.back-link:hover{color:var(--primary)}.result-title{margin-bottom:8px;font-size:20px;font-weight:600;line-height:1.5}.result-image{object-fit:contain;border-radius:var(--radius-sm);background:#f9f9f9;width:100%;max-height:300px;margin-bottom:24px}.price-summary{grid-template-columns:1fr 1fr 1fr;gap:16px;margin-bottom:24px;display:grid}.price-summary>div{background:var(--card-bg);border-radius:var(--radius-sm);text-align:center;box-shadow:var(--shadow);padding:20px}.price-label{color:var(--text-light);margin-bottom:4px;font-size:12px;display:block}.price-value{color:var(--text);font-size:28px;font-weight:700;display:block}.price-value.save{color:#22c55e}.price-platform{color:var(--text-light);margin-top:2px;font-size:12px;display:block}.comparison-list{flex-direction:column;gap:12px;margin-bottom:32px;display:flex}.comparison-card{background:var(--card-bg);border-radius:var(--radius-sm);box-shadow:var(--shadow);align-items:center;gap:16px;padding:16px 20px;transition:transform .2s;display:flex}.comparison-card:hover{transform:translate(4px)}.comparison-card.lowest{border:2px solid var(--primary);background:linear-gradient(135deg,#fff8f0 0%,#fff0e6 100%)}.card-rank{text-align:center;min-width:36px;font-size:20px}.card-platform{min-width:80px;font-weight:600}.platform-icon{margin-right:4px}.card-price{flex:1}.price-current{font-size:22px;font-weight:700}.price-original{color:var(--text-light);margin-left:8px;font-size:13px;text-decoration:line-through}.price-tag{border-radius:50px;margin-left:8px;padding:2px 8px;font-size:12px;display:inline-block}.lowest-tag{color:var(--primary);background:#ffeee6;font-weight:600}.card-meta{flex-direction:column;gap:2px;min-width:90px;display:flex}.meta-item{color:var(--text-light);font-size:12px}.btn-jump{color:#fff;text-align:center;border-radius:50px;min-width:100px;padding:8px 20px;font-size:13px;font-weight:600;transition:opacity .2s;display:inline-block}.btn-jump:hover{opacity:.85}.price-chart-section{margin-bottom:32px}.price-chart-section h2{margin-bottom:16px;font-size:18px}.chart-container{background:var(--card-bg);border-radius:var(--radius-sm);box-shadow:var(--shadow);padding:16px}.history-page{max-width:800px;margin:0 auto;padding:24px}.history-page h1{margin-bottom:24px;font-size:24px}.history-list{flex-direction:column;gap:12px;display:flex}.history-item{background:var(--card-bg);border-radius:var(--radius-sm);box-shadow:var(--shadow);align-items:center;gap:16px;padding:14px 20px;display:flex}.history-platform{min-width:70px;font-size:14px;font-weight:600}.history-url{color:var(--text-light);text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:13px;overflow:hidden}.history-time{color:var(--text-light);text-align:right;min-width:140px;font-size:13px}.loading-page,.error-page,.empty-state{text-align:center;padding:80px 24px}.loading-spinner{margin-bottom:16px;font-size:48px;animation:1s infinite bounce}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-16px)}}.loading-hint{color:var(--text-light);margin-top:8px;font-size:13px}.error-icon{margin-bottom:16px;font-size:48px}.error-page h2{color:var(--text-light);margin-bottom:24px;font-size:18px}.empty-icon{margin-bottom:16px;font-size:48px}.empty-state h3{margin-bottom:8px;font-size:18px}.empty-state p{color:var(--text-light);margin-bottom:24px;font-size:14px}@media (width<=640px){.hero-title{font-size:28px}.search-input-wrapper{border-radius:var(--radius-sm);flex-direction:column;padding:12px}.search-btn{border-radius:var(--radius-sm);width:100%}.steps{flex-direction:column;align-items:center}.step-arrow{padding:0;transform:rotate(90deg)}.price-summary{grid-template-columns:1fr}.comparison-card{text-align:center;flex-direction:column;gap:8px}.card-meta{flex-direction:row;gap:12px}.history-item{text-align:center;flex-direction:column}.history-time{min-width:auto}}