:root{--bg: #f3f4f6;--surface: #ffffff;--surface-alt: #f9fafb;--border: #e5e7eb;--text: #111827;--text-secondary: #6b7280;--text-muted: #9ca3af;--primary: #6366f1;--primary-hover: #4f46e5;--primary-disabled: #a5b4fc;--primary-text: #ffffff}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.input-form{display:flex;flex-direction:column;gap:16px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:stretch}.form-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden;display:flex;flex-direction:column}.card-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 12px;border-bottom:1px solid var(--border);background:var(--surface-alt)}.card-title{display:flex;align-items:center;gap:8px}.card-icon{font-size:16px;line-height:1}.card-title span{font-weight:600;font-size:14px;color:var(--text)}.card-hint{font-size:12px;color:var(--text-muted)}.file-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;background:color-mix(in srgb,var(--primary) 10%,transparent);color:var(--primary);border:1px solid color-mix(in srgb,var(--primary) 25%,transparent);border-radius:20px;font-size:12px;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.clear-btn{background:none;border:none;cursor:pointer;padding:0 2px;font-size:14px;color:var(--text-muted);line-height:1;flex-shrink:0;transition:color .15s}.clear-btn:hover{color:var(--text)}.drop-zone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;min-height:260px;cursor:pointer;transition:background .2s;padding:32px;background:var(--surface)}.drop-zone:hover,.drop-zone.dragging{background:color-mix(in srgb,var(--primary) 5%,var(--surface))}.drop-zone.dragging .drop-icon{transform:scale(1.15)}.drop-icon{font-size:40px;transition:transform .2s}.drop-hint{font-size:14px;font-weight:600;color:var(--text-secondary)}.drop-sub{font-size:12px;color:var(--text-muted)}.drop-upload-btn{margin-top:8px;padding:7px 20px;border:1.5px solid var(--primary);border-radius:6px;background:transparent;color:var(--primary);font-size:13px;font-weight:600;cursor:pointer;transition:background .15s,color .15s}.drop-upload-btn:hover{background:var(--primary);color:var(--primary-text)}.drop-error{font-size:12px;color:#dc2626;margin-top:4px}.form-card textarea{width:100%;flex:1;min-height:260px;padding:14px 16px;border:none;font-size:14px;line-height:1.7;resize:none;font-family:inherit;color:var(--text);background:var(--surface);outline:none}.form-card textarea::placeholder{color:var(--text-muted)}.desensitize-bar{display:flex;align-items:center;flex-wrap:wrap;gap:10px;padding:10px 16px;border-top:1px solid var(--border);background:var(--surface-alt)}.desensitize-label{font-size:12px;color:var(--text-muted);white-space:nowrap}.desensitize-opt{display:flex;align-items:center;gap:4px;font-size:12px;color:var(--text-secondary);cursor:pointer;-webkit-user-select:none;user-select:none}.desensitize-opt input[type=checkbox]{accent-color:var(--primary);cursor:pointer}.desensitize-btn{margin-left:auto;padding:4px 12px;background:transparent;border:1px solid var(--primary);border-radius:6px;color:var(--primary);font-size:12px;font-weight:600;cursor:pointer;transition:background .15s,color .15s;white-space:nowrap}.desensitize-btn:hover{background:var(--primary);color:var(--primary-text)}.desensitize-msg{padding:7px 16px;font-size:12px;color:var(--text-secondary);background:color-mix(in srgb,var(--primary) 6%,var(--surface));border-top:1px solid var(--border)}.code-row{display:flex;justify-content:center}.code-input-wrap{display:flex;flex-direction:column;align-items:center;gap:6px}.code-input{width:280px;padding:10px 16px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:monospace;color:var(--text);background:var(--surface);text-align:center;letter-spacing:1px;outline:none;transition:border-color .2s}.code-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 15%,transparent)}.code-input::placeholder{color:var(--text-muted);letter-spacing:0;font-family:inherit}.free-tip{font-size:12px;color:var(--text-muted)}.free-tip.exhausted{color:#f59e0b}.submit-row{display:flex;justify-content:center;padding:8px 0}.privacy-tip{text-align:center;font-size:12px;color:var(--text-secondary);margin:0}.submit-btn{padding:13px 64px;background:var(--primary);color:var(--primary-text);border:none;border-radius:10px;font-size:16px;font-weight:700;cursor:pointer;transition:background .2s,box-shadow .2s,transform .1s;letter-spacing:.5px}.submit-btn:hover:not(:disabled){background:var(--primary-hover);box-shadow:0 4px 14px color-mix(in srgb,var(--primary) 40%,transparent);transform:translateY(-1px)}.submit-btn:active:not(:disabled){transform:translateY(0)}.submit-btn:disabled{background:var(--primary-disabled);cursor:not-allowed;box-shadow:none}@media (max-width: 768px){.form-row{grid-template-columns:1fr}.drop-zone{min-height:180px}.desensitize-bar{flex-wrap:wrap;gap:8px}.desensitize-btn{margin-left:0;width:100%;padding:7px 0}.submit-btn{width:100%;padding:14px}}.result{margin-top:28px;display:flex;flex-direction:column;gap:16px}.result-header{display:flex;align-items:center;gap:24px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:24px}.copy-btn{flex-shrink:0;padding:7px 16px;border:1px solid var(--border);border-radius:8px;background:var(--surface-alt);color:var(--text-secondary);font-size:13px;font-weight:500;cursor:pointer;transition:background .15s,color .15s;margin-left:auto}.copy-btn:hover{background:var(--border);color:var(--text)}.reset-btn{flex-shrink:0;padding:7px 16px;border:1px solid transparent;border-radius:8px;background:var(--primary);color:var(--primary-text);font-size:13px;font-weight:600;cursor:pointer;transition:background .15s}.reset-btn:hover{background:var(--primary-hover)}.score-ring{flex-shrink:0;width:88px;height:88px;border-radius:50%;border:6px solid;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--surface)}.score-number{font-size:30px;font-weight:800;line-height:1}.score-label{font-size:11px;color:var(--text-muted);margin-top:2px}.score-info{flex:1}.score-title{font-size:13px;font-weight:600;color:var(--text-muted);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}.score-reason{font-size:14px;color:var(--text);line-height:1.75;margin:0}.result-section{background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden}.section-header{display:flex;align-items:center;gap:8px;padding:14px 20px;background:var(--surface-alt);border-bottom:1px solid var(--border)}.section-icon{font-size:16px}.section-header h3{font-size:14px;font-weight:700;color:var(--text);margin:0}.section-hint{margin-left:auto;font-size:11px;color:var(--text-secondary)}.section-body{padding:20px}.keywords{display:flex;flex-wrap:wrap;gap:8px}.keyword-tag{padding:5px 14px;background:color-mix(in srgb,#ef4444 12%,var(--surface));color:#f87171;border-radius:20px;font-size:13px;font-weight:600;border:1px solid color-mix(in srgb,#ef4444 25%,var(--surface))}.expression-item{position:relative;border:1px solid var(--border);border-radius:10px;overflow:hidden;margin-bottom:12px}.expression-item:last-child{margin-bottom:0}.expression-num{position:absolute;top:9px;right:12px;font-size:11px;font-weight:600;color:var(--text-secondary);pointer-events:none}.expression-row{display:flex;align-items:flex-start;gap:10px;padding:10px 14px;font-size:14px;line-height:1.6;color:var(--text);border-bottom:1px solid var(--border)}.expression-row:last-child{border-bottom:none}.expression-row.row-bad{background:color-mix(in srgb,#ef4444 10%,var(--surface));padding-right:36px}.expression-row.row-warn{background:color-mix(in srgb,#f59e0b 10%,var(--surface))}.expression-row.row-good{background:color-mix(in srgb,#22c55e 10%,var(--surface));cursor:pointer;transition:background .15s}.expression-row.row-good:hover,.expression-row.row-good.row-copied{background:color-mix(in srgb,#22c55e 20%,var(--surface))}.badge{flex-shrink:0;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:700;letter-spacing:.3px}.badge.bad{background:color-mix(in srgb,#ef4444 20%,var(--surface));color:#f87171}.badge.warn{background:color-mix(in srgb,#f59e0b 20%,var(--surface));color:#fbbf24}.badge.good{background:color-mix(in srgb,#22c55e 20%,var(--surface));color:#4ade80}.actions-list{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px}.action-item{display:flex;align-items:flex-start;gap:12px;font-size:14px;color:var(--text);line-height:1.65}.action-num{flex-shrink:0;width:22px;height:22px;border-radius:50%;background:var(--primary);color:var(--primary-text);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:1px}@media (max-width: 640px){.result-header{flex-wrap:wrap;gap:12px;padding:16px}.score-ring{width:72px;height:72px}.score-number{font-size:24px}.score-info{flex:1;min-width:0}.copy-btn{margin-left:0;width:100%}.reset-btn{width:100%}}.app{min-height:100vh;display:flex;flex-direction:column}.header{background:var(--surface);border-bottom:1px solid var(--border);height:60px;display:flex;align-items:center;position:sticky;top:0;z-index:20;box-shadow:0 1px 3px #0000000f}.header-content{max-width:1100px;width:100%;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:baseline;gap:10px}.logo-name{font-size:20px;font-weight:800;color:var(--primary);letter-spacing:-.5px}.logo-tagline{font-size:13px;color:var(--text-muted);font-weight:400}.theme-toggle{display:flex;align-items:center;gap:6px;padding:6px 14px;background:var(--surface-alt);border:1px solid var(--border);border-radius:20px;cursor:pointer;transition:background .2s,border-color .2s;color:var(--text-secondary);font-size:13px;font-weight:500}.theme-toggle:hover{background:var(--border);color:var(--text)}.theme-toggle-icon{font-size:15px;line-height:1}.theme-toggle-label{font-size:13px}.main{flex:1;max-width:1100px;width:100%;margin:0 auto;padding:32px 24px 48px}.intro-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;background:linear-gradient(135deg,color-mix(in srgb,var(--primary) 8%,transparent),color-mix(in srgb,var(--primary) 3%,transparent));border:1px solid color-mix(in srgb,var(--primary) 20%,transparent);border-radius:12px;padding:16px 20px;margin-bottom:24px}.intro-step{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);white-space:nowrap}.intro-step-num{width:22px;height:22px;border-radius:50%;background:var(--primary);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}.intro-arrow{color:var(--text-muted);font-size:16px}@media (max-width: 640px){.header{height:52px}.logo-tagline{display:none}.intro-bar{flex-wrap:wrap;gap:12px}.intro-arrow{display:none}.main{padding:16px 12px 32px}}.footer{border-top:1px solid var(--border);background:var(--surface);padding:16px 24px}.footer-content{max-width:1100px;margin:0 auto;display:flex;align-items:center;justify-content:center;gap:10px;font-size:13px;color:var(--text-muted)}.footer-divider{opacity:.4}.footer-wechat{display:flex;align-items:center;gap:4px}.wechat-trigger{position:relative;color:var(--primary);font-weight:600;cursor:pointer;padding:2px 6px;border-radius:6px;transition:background .15s}.wechat-trigger:hover{background:color-mix(in srgb,var(--primary) 12%,transparent)}.wechat-qr-popup{display:none;position:absolute;bottom:calc(100% + 12px);left:50%;transform:translate(-50%);background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px;box-shadow:0 8px 32px #00000026;flex-direction:column;align-items:center;gap:8px;z-index:100;white-space:nowrap}.wechat-qr-popup:after{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);border:6px solid transparent;border-top-color:var(--border)}.wechat-trigger:hover .wechat-qr-popup{display:flex}.wechat-qr-popup img{width:160px;height:160px;border-radius:8px;display:block}.wechat-qr-tip{font-size:12px;color:var(--text-muted);font-weight:400}@media (max-width: 640px){.footer-content{flex-direction:column;gap:4px;text-align:center}.footer-divider{display:none}}.toast{position:fixed;top:72px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:10px;padding:12px 18px;border-radius:10px;font-size:14px;font-weight:500;box-shadow:0 4px 20px #0000002e;z-index:999;animation:toast-in .25s ease;max-width:calc(100vw - 48px)}.toast-error{background:var(--surface);color:var(--text);border:1px solid color-mix(in srgb,#ef4444 40%,var(--border));box-shadow:0 4px 20px color-mix(in srgb,#ef4444 15%,transparent)}.toast-success{background:var(--surface);color:var(--text);border:1px solid color-mix(in srgb,#22c55e 40%,var(--border));box-shadow:0 4px 20px color-mix(in srgb,#22c55e 15%,transparent)}.toast-icon{font-size:16px;flex-shrink:0}.toast-msg{flex:1;word-break:break-word}.toast-close{background:none;border:none;cursor:pointer;font-size:18px;line-height:1;padding:0 2px;color:inherit;opacity:.6;flex-shrink:0}.toast-close:hover{opacity:1}@keyframes toast-in{0%{opacity:0;transform:translate(-50%) translateY(-12px)}to{opacity:1;transform:translate(-50%) translateY(0)}}