@import"https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500&display=swap";:root{--bg: #0f0f14;--surface: #1a1a24;--surface-hover: #22223a;--border: #2a2a3a;--primary: #7c6aef;--primary-dim: rgba(124,106,239,.15);--primary-glow: rgba(124,106,239,.3);--accent: #22d3ee;--text: #e8e8f0;--muted: #8888a0;--success: #4ade80;--warning: #fbbf24;--error: #f87171}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:DM Sans,PingFang SC,Microsoft YaHei,sans-serif;background-color:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E")}code,.mono{font-family:JetBrains Mono,monospace}a{color:var(--accent);text-decoration:none;transition:color .2s}a:hover{color:var(--primary)}.nav-bar{position:sticky;top:0;z-index:100;background:#0f0f14d9;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}.nav-container{max-width:1100px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;justify-content:space-between}.nav-brand{font-size:1.2rem;font-weight:600;color:var(--text);display:flex;align-items:center;gap:8px}.nav-brand span{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{display:flex;gap:8px}.nav-link{padding:6px 16px;border-radius:8px;color:var(--muted);font-size:.9rem;font-weight:500;transition:all .2s}.nav-link:hover{color:var(--text);background:var(--primary-dim)}.nav-link.active{color:var(--primary);background:var(--primary-dim)}.container{max-width:1100px;margin:0 auto;padding:32px 24px;flex:1;width:100%}.hero{text-align:center;padding:80px 0 48px}.hero h1{font-size:2.8rem;font-weight:700;margin-bottom:8px;background:linear-gradient(135deg,var(--text) 0%,var(--primary) 50%,var(--accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero .subtitle{font-size:1.1rem;color:var(--muted);margin-bottom:48px}.module-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;margin-top:24px}.module-card{display:block;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:32px;text-decoration:none;color:var(--text);transition:all .3s ease;position:relative;overflow:hidden}.module-card:before{content:"";position:absolute;inset:0;border-radius:16px;border:1px solid transparent;transition:border-color .3s}.module-card:hover{background:var(--surface-hover);transform:translateY(-2px);box-shadow:0 8px 32px var(--primary-glow)}.module-card:hover:before{border-color:var(--primary)}.module-card .card-icon{font-size:2rem;margin-bottom:16px;display:block}.module-card h3{font-size:1.2rem;font-weight:600;margin-bottom:8px}.module-card p{color:var(--muted);font-size:.9rem}.upload-section{margin-bottom:24px}.upload-area{border:2px dashed var(--border);border-radius:16px;padding:48px;text-align:center;cursor:pointer;transition:all .3s;background:var(--surface)}.upload-area:hover,.upload-area.drag-over{border-color:var(--primary);background:var(--primary-dim)}.upload-area .upload-icon{font-size:2.5rem;margin-bottom:12px;display:block;color:var(--muted)}.upload-area .upload-text{color:var(--muted);font-size:.95rem}.upload-area .upload-text strong{color:var(--primary)}.upload-sample{margin-top:8px;font-size:.82rem;color:var(--muted)}.upload-sample a{color:var(--accent)}input[type=file]{display:none}.histogram-section{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:24px;margin-bottom:24px}.histogram-section h2{font-size:1rem;font-weight:600;margin-bottom:16px;color:var(--muted)}#histogramCanvas{width:100%;height:160px;border-radius:8px;background:#0000004d;display:block}.controls{margin-top:20px}.controls-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.slider-group{flex:1;min-width:200px}.slider-label{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;font-size:.85rem;color:var(--muted)}.slider-value{font-family:JetBrains Mono,monospace;color:var(--text);font-weight:500;background:var(--primary-dim);padding:2px 8px;border-radius:4px;font-size:.8rem}input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:3px;background:var(--border);outline:none;cursor:pointer}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary);border:2px solid var(--bg);box-shadow:0 0 8px var(--primary-glow);cursor:pointer;transition:transform .15s}input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.2)}input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--primary);border:2px solid var(--bg);box-shadow:0 0 8px var(--primary-glow);cursor:pointer}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;border:none;border-radius:10px;font-family:DM Sans,sans-serif;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:#6b59de;box-shadow:0 4px 16px var(--primary-glow)}.btn-secondary{background:var(--surface-hover);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--border)}.btn-group{display:flex;gap:8px}.preview-section{margin-bottom:24px}#previewCanvas{max-width:100%;height:auto;border-radius:12px;border:1px solid var(--border);display:block;background:repeating-conic-gradient(var(--surface) 0% 25%,var(--bg) 0% 50%) 50% / 16px 16px}.ad-container{margin:24px 0;min-height:90px;border-radius:8px}.footer{border-top:1px solid var(--border);padding:24px;text-align:center;color:var(--muted);font-size:.85rem;margin-top:auto}.footer-links{display:flex;justify-content:center;gap:24px;margin-bottom:12px}.footer-links a{color:var(--muted);transition:color .2s}.footer-links a:hover{color:var(--text)}.page-content{max-width:700px;margin:48px auto}.page-content h1{font-size:2rem;margin-bottom:24px}.page-content h2{font-size:1.3rem;margin-top:32px;margin-bottom:12px}.page-content p{color:var(--muted);margin-bottom:16px;line-height:1.8}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}.compare-grid canvas{width:100%;height:auto;border-radius:12px;border:1px solid var(--border);display:block;background:repeating-conic-gradient(var(--surface) 0% 25%,var(--bg) 0% 50%) 50% / 16px 16px}.detect-status{padding:16px;border-radius:12px;background:var(--surface);border:1px solid var(--border);margin-bottom:16px}.confidence-bar{height:8px;border-radius:4px;background:var(--border);overflow:hidden}.confidence-fill{height:100%;border-radius:4px;background:var(--primary);transition:width .5s ease}.scan-progress{padding:16px;background:var(--surface);border-radius:12px;border:1px solid var(--border);margin-bottom:16px}.scanning{animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.auto-reveal-section{margin-bottom:24px}.detect-status{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px 20px}.detect-status.found{border-color:var(--success)}.detect-status.not-found{border-color:var(--muted)}.detect-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;flex-wrap:wrap;gap:8px}.confidence-label{font-size:.85rem;color:var(--muted)}.confidence-bar{height:6px;border-radius:3px;background:var(--border);overflow:hidden;margin-bottom:10px}.confidence-fill{height:100%;border-radius:3px;background:var(--primary);transition:width .5s ease}.detect-meta{display:flex;gap:24px;font-size:.85rem;color:var(--muted);flex-wrap:wrap}.scan-progress{margin-top:12px}.scan-progress-bar{height:4px;border-radius:2px;background:var(--border);overflow:hidden}.scan-progress-fill{height:100%;background:var(--accent);transition:width .15s}.btn-accent{background:var(--accent);color:var(--bg)}.btn-accent:hover{background:#1bc4d9;box-shadow:0 4px 16px #22d3ee4d}.btn-accent:disabled{opacity:.4;cursor:not-allowed;box-shadow:none}@media(max-width:640px){.hero h1{font-size:1.8rem}.hero{padding:40px 0 24px}.upload-area{padding:32px 16px}.nav-container{padding:0 16px}.container{padding:16px}.compare-grid{grid-template-columns:1fr}.histogram-section{position:sticky;bottom:0;z-index:50;margin:0 -16px;border-radius:16px 16px 0 0;padding:12px 16px;box-shadow:0 -4px 20px #00000080}.histogram-section h2{margin-bottom:6px;font-size:.85rem}#histogramCanvas{height:72px}.controls{margin-top:8px}.controls-row{flex-direction:row;gap:12px}.slider-group{min-width:0}.slider-label{font-size:.78rem;margin-bottom:2px}.btn-group{margin-top:8px!important;gap:6px!important}.btn-group .btn{padding:8px 12px;font-size:.78rem}}