/* 裁音魔方 · 页面样式（自 pages/noise-reduction.html 抽取，修改后请同步对应页面） */
        :root {
            --primary: #4CAF50; --primary-dark: #388E3C;
            --primary-light: #66BB6A;
            --info-blue: #5DD1FF;
            --warning-yellow: #FFD54F;
            --error-red: #EF5350;
            --dark-bg: #121212; --darker-bg: #0A0A0A;
            --card-bg: #1E1E1E;
            --card-border: rgba(255,255,255,0.12);
            --card-border-green: rgba(76,175,80,0.15);
            --text-primary: #FFFFFF;
            --text-secondary: #C8C8C8;
            --text-muted: #8E8E8E;
            --gradient: linear-gradient(135deg, #4CAF50, #388E3C);
            --radius: 16px; --radius-sm: 10px;
            --shadow-soft: 0 8px 24px rgba(0,0,0,0.4);
            --shadow-strong: 0 16px 48px rgba(0,0,0,0.6);
        }

        * { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Poppins', 'Segoe UI', sans-serif; }
        body { background-color: var(--darker-bg); color: var(--text-primary); line-height: 1.6; overflow-x: hidden; }
        a { text-decoration: none; color: inherit; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

        .breadcrumb { max-width: 1200px; margin: 0 auto; padding: 100px 20px 0; font-size: 13px; color: var(--text-muted); }
        .breadcrumb a { color: var(--text-secondary); transition: color 0.24s; }
        .breadcrumb a:hover { color: var(--primary-light); }
        .breadcrumb .sep { margin: 0 8px; }
        .breadcrumb .current { color: var(--info-blue); }

        .btn { padding: 10px 24px; border-radius: var(--radius-sm); font-weight: 600; cursor: pointer; transition: all 0.24s; border: none; font-size: 15px; display: inline-flex; align-items: center; gap: 8px; }
        .btn-primary { background: var(--gradient); color: white; }
        .btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
        .btn-secondary { background: transparent; color: var(--text-primary); border: 1px solid var(--card-border); }
        .btn-secondary:disabled { opacity: 0.5; cursor: not-allowed; }
        @media (hover: hover) {
            .btn-primary:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(76,175,80,0.28); }
            .btn-secondary:hover:not(:disabled) { border-color: var(--primary-light); color: var(--primary-light); }
        }

        .hero { padding: 40px 0; background: radial-gradient(circle at 50% 10%, rgba(76,175,80,0.1) 0%, transparent 60%), var(--darker-bg); border-bottom: 1px solid var(--card-border); }
        .hero-content { text-align: center; max-width: 820px; margin: 0 auto; }
        .hero-content .hero-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(93,209,255,0.12); color: var(--info-blue); padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 500; margin-bottom: 20px; }
        .hero-content h1 { font-size: 42px; font-weight: 700; line-height: 1.25; margin-bottom: 16px; }
        .hero-content h1 .highlight { color: var(--primary); }
        .hero-content p { font-size: 16px; color: var(--text-secondary); margin-bottom: 24px; line-height: 1.7; }
        .hero-content .hero-badges { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }
        .hero-content .hero-badges span { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-secondary); background: rgba(255,255,255,0.05); padding: 6px 14px; border-radius: 20px; }
        .hero-content .hero-badges i { color: var(--info-blue); }

        /* 主工具卡片 */
        .main-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 36px 40px;
            margin: 32px auto;
            max-width: 1200px;
            border: 1px solid var(--card-border);
            box-shadow: var(--shadow-strong);
        }

        .tool-header {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 24px;
        }
        .tool-header-icon {
            width: 40px; height: 40px;
            display: flex; align-items: center; justify-content: center;
            color: var(--primary); font-size: 26px; flex-shrink: 0;
        }
        .tool-header h2 { font-weight: 700; font-size: 24px; color: var(--text-primary); }

        /* 步骤条 */
        .steps-bar {
            display: flex; align-items: center; justify-content: center;
            flex-wrap: wrap; gap: 20px;
            padding: 16px 20px;
            background: rgba(255,255,255,0.03);
            border: 1px solid var(--card-border);
            border-radius: 12px;
            margin-bottom: 24px;
        }
        .steps-bar-item { display: flex; align-items: center; gap: 10px; }
        .steps-bar-num {
            display: inline-flex; align-items: center; justify-content: center;
            width: 26px; height: 26px; border-radius: 50%;
            background: var(--primary); color: white;
            font-weight: 700; font-size: 13px; flex-shrink: 0;
        }
        .steps-bar-text { font-size: 14px; font-weight: 400; color: var(--text-secondary); white-space: nowrap; }
        .steps-bar-arrow { color: var(--text-muted); font-size: 12px; }
        @media (max-width: 640px) {
            .steps-bar { gap: 10px; padding: 14px 12px; }
            .steps-bar-num { width: 22px; height: 22px; font-size: 12px; }
            .steps-bar-text { font-size: 12px; }
        }
        @media (max-width: 480px) { .steps-bar-arrow { display: none; } }

        /* 上传区 */
        .upload-zone {
            background: rgba(255,255,255,0.02);
            border: 2px dashed rgba(255,255,255,0.15);
            border-radius: 12px;
            padding: 56px 32px;
            text-align: center;
            transition: all 0.24s;
        }
        .upload-zone.dragover { border-color: var(--primary); background: rgba(76,175,80,0.06); }
        @media (hover: hover) { .upload-zone:hover { border-color: rgba(76,175,80,0.4); } }
        .upload-zone .icon { font-size: 52px; margin-bottom: 18px; color: var(--primary); }
        .upload-zone h3 { font-weight: 600; font-size: 20px; margin-bottom: 8px; color: var(--text-primary); }
        .upload-zone p { color: var(--text-secondary); margin-bottom: 24px; font-size: 14px; }
        .file-input-wrap { display: inline-block; position: relative; }
        .file-input-wrap input[type="file"] { position: absolute; left: 0; top: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }

        /* 文件列表 */
        .file-list-container { margin-top: 24px; max-height: 50vh; min-height: 100px; overflow-y: auto; border-radius: 12px; border: 1px solid var(--card-border); background: rgba(0,0,0,0.2); }
        .file-list-header { display: flex; justify-content: space-between; align-items: center; padding: 12px 20px; border-bottom: 1px solid var(--card-border); font-size: 14px; color: var(--text-secondary); background: rgba(0,0,0,0.15); position: sticky; top: 0; z-index: 5; backdrop-filter: blur(10px); }
        .file-list-header .count { color: var(--primary); font-weight: 600; }
        .file-list-header .clear-all { color: var(--error-red); cursor: pointer; background: none; border: none; font-size: 13px; display: flex; align-items: center; gap: 4px; padding: 4px 10px; border-radius: 6px; transition: all 0.2s; }
        .file-list-header .clear-all:hover { background: rgba(239,83,80,0.12); }

        .file-editor-row { background: var(--card-bg); margin: 12px; border-radius: 12px; padding: 20px; border: 1px solid var(--card-border); }
        .file-editor-row.disabled { opacity: 0.6; pointer-events: none; }
        .file-info-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; flex-wrap: wrap; gap: 12px; }
        .file-info { display: flex; align-items: center; gap: 14px; flex: 1; min-width: 0; }
        .file-thumb { width: 48px; height: 48px; border-radius: 10px; background: linear-gradient(135deg, #333, #222); display: flex; align-items: center; justify-content: center; color: var(--primary-light); font-size: 20px; flex-shrink: 0; border: 1px solid var(--card-border); }
        .file-meta { min-width: 0; flex: 1; }
        .file-name { font-size: 14px; font-weight: 600; margin-bottom: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
        .file-size { font-size: 13px; color: var(--text-secondary); }
        .file-tools { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
        .btn-reset-default {
            background: transparent; border: none;
            color: var(--text-muted); font-size: 12px;
            cursor: pointer; padding: 4px 8px; border-radius: 6px;
            transition: all 0.2s; display: flex; align-items: center; gap: 4px;
        }
        .btn-reset-default:hover { color: var(--primary-light); background: rgba(76,175,80,0.08); }
        .remove-file { color: var(--text-muted); cursor: pointer; background: none; border: none; font-size: 16px; padding: 6px; border-radius: 8px; transition: 0.24s; }
        .remove-file:hover:not(:disabled) { color: var(--error-red); background: rgba(239,83,80,0.1); }
        .remove-file:disabled { opacity: 0.3; cursor: not-allowed; }
        .remove-file.hidden { display: none; }

        .denoise-params { background: rgba(0,0,0,0.25); border-radius: 10px; padding: 18px; border: 1px solid var(--card-border); }
        .params-title { font-size: 13px; font-weight: 700; color: var(--text-primary); margin-bottom: 14px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
        .params-title .left { display: flex; align-items: center; gap: 8px; font-size: 14px; }
        .params-title .left i { color: var(--primary-light); font-size: 16px; }
        .params-title .rate-hint { font-size: 12px; color: var(--text-secondary); font-weight: 400; }
        .params-title .rate-hint strong { color: var(--primary-light); font-weight: 700; }

        .denoise-levels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
        .denoise-level {
            padding: 10px 8px; border: 1px solid var(--card-border); border-radius: 10px;
            text-align: center; cursor: pointer; transition: all 0.24s; background: transparent;
        }
        .denoise-level:hover { border-color: var(--primary-light); }
        .denoise-level:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        .denoise-level.active {
            border-color: var(--primary); background: rgba(76,175,80,0.15);
            box-shadow: inset 0 0 0 1px var(--primary);
        }
        .denoise-level .level-name { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 2px; }
        .denoise-level.active .level-name { color: var(--primary); }
        .denoise-level .level-desc { font-size: 11px; color: var(--text-muted); line-height: 1.5; }

        .extra-toggles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
        .toggle-item {
            display: flex; align-items: center; justify-content: space-between;
            padding: 10px 14px; background: rgba(255,255,255,0.03);
            border-radius: 10px; cursor: pointer; transition: all 0.24s;
            border: 1px solid transparent; position: relative;
        }
        .toggle-item:hover { border-color: rgba(76,175,80,0.3); }
        .toggle-item:focus-within { border-color: var(--primary-light); }
        .toggle-item input[type="checkbox"] { position: absolute; opacity: 0; pointer-events: none; }
        .toggle-item input:focus-visible ~ .toggle-switch { outline: 2px solid var(--primary); outline-offset: 2px; }
        .toggle-item .toggle-label-wrap { flex: 1; }
        .toggle-item .toggle-label { font-size: 13px; color: var(--text-primary); display: flex; align-items: center; gap: 6px; }
        .toggle-item .toggle-label .help-icon {
            font-size: 12px; color: var(--text-muted); cursor: pointer;
            padding: 2px; border-radius: 50%; transition: all 0.2s;
        }
        .toggle-item .toggle-label .help-icon:hover { color: var(--primary-light); background: rgba(76,175,80,0.1); }
        .toggle-item .toggle-desc { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
        .toggle-tooltip {
            position: absolute; bottom: 100%; left: 0; margin-bottom: 8px;
            background: var(--card-bg); border: 1px solid var(--card-border);
            border-radius: 10px; padding: 10px 14px; font-size: 12px;
            color: var(--text-secondary); line-height: 1.6; width: 220px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.5);
            opacity: 0; visibility: hidden; transition: all 0.24s;
            z-index: 100; pointer-events: none;
        }
        .toggle-item.show-tooltip .toggle-tooltip { opacity: 1; visibility: visible; }
        .toggle-switch {
            position: relative; width: 40px; height: 22px;
            background: #333; border-radius: 11px; transition: all 0.24s; flex-shrink: 0;
        }
        .toggle-switch::after {
            content: ''; position: absolute; top: 3px; left: 3px;
            width: 16px; height: 16px; background: white;
            border-radius: 50%; transition: all 0.24s;
            box-shadow: 0 1px 3px rgba(0,0,0,0.3);
        }
        .toggle-item input:checked ~ .toggle-switch { background: var(--primary); }
        .toggle-item input:checked ~ .toggle-switch::after { transform: translateX(18px); }
        .toggle-item:active .toggle-switch { transform: scale(0.95); }

        /* 底部操作按钮 */
        .action-bar {
            display: flex; justify-content: center; align-items: center;
            gap: 14px; margin-top: 28px; flex-wrap: wrap;
        }
        .action-bar .btn-primary {
            padding: 14px 44px; font-size: 16px; border-radius: 10px;
            min-width: 240px; justify-content: center;
        }
        .action-bar .btn-secondary { padding: 14px 28px; font-size: 15px; border-radius: 10px; }
        .cost-hint {
            width: 100%; font-size: 13px; color: var(--text-muted);
            margin-top: 8px; text-align: center;
        }
        .cost-hint .discount { color: var(--warning-yellow); font-weight: 600; }
        .cost-hint .info-icon { color: var(--info-blue); cursor: help; margin-left: 4px; }

        /* 结果区 */
        .result-box { margin-top: 32px; border-top: 1px solid var(--card-border); padding-top: 28px; display: none; }
        .result-box.active { display: block; }
        .result-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; flex-wrap: wrap; gap: 12px; }
        .result-header h3 { font-size: 18px; font-weight: 600; }
        .result-header h3 i { color: var(--primary); margin-right: 6px; }
        .result-header .result-stats { font-size: 13px; color: var(--text-secondary); }

        .result-item { background: rgba(255,255,255,0.03); border-radius: 10px; padding: 18px; border: 1px solid var(--card-border); margin-bottom: 14px; }
        .result-item-top { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 14px; flex-wrap: wrap; }
        .result-item-info { display: flex; align-items: center; flex: 1; min-width: 0; gap: 12px; }
        .result-item .result-icon { width: 36px; height: 36px; background: rgba(76,175,80,0.12); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--primary-light); flex-shrink: 0; }
        .result-item .result-meta-wrap { min-width: 0; flex: 1; }
        .result-item .result-name { font-size: 14px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: block; }
        .result-item .result-meta { font-size: 12px; color: var(--text-muted); }

        .btn-download { background: var(--gradient); color: white; border: none; padding: 8px 18px; border-radius: 20px; font-weight: 600; font-size: 13px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; transition: 0.24s; }
        .btn-download:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(76,175,80,0.35); }
        .btn-download:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

        .btn-unlock { background: linear-gradient(135deg, #FFD700, #F4A460); color: #1a1a1a; border: none; padding: 8px 18px; border-radius: 20px; font-weight: 600; font-size: 13px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; transition: 0.24s; }
        .btn-unlock:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(255,215,0,0.35); }
        .btn-unlock:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

        .result-badge { font-size: 11px; padding: 2px 10px; border-radius: 10px; font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
        .result-badge.trial { background: rgba(255,152,0,0.15); color: var(--warning); }
        .result-badge.unlocked { background: rgba(76,175,80,0.15); color: var(--primary-light); }

        .compare-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
        .compare-side { background: rgba(0,0,0,0.35); border-radius: 10px; padding: 14px 16px; border: 1px solid var(--card-border); }
        .compare-label { font-size: 12px; font-weight: 600; margin-bottom: 10px; display: flex; align-items: center; justify-content: space-between; }
        .compare-label.before { color: var(--text-secondary); }
        .compare-label.after { color: var(--primary-light); }
        .compare-label .tag { font-size: 10px; background: rgba(255,255,255,0.08); padding: 2px 8px; border-radius: 10px; color: var(--text-muted); }
        .compare-label.after .tag { background: rgba(76,175,80,0.15); color: var(--primary-light); }

        .player-row { display: flex; align-items: center; gap: 10px; }
        .play-btn-circle { width: 36px; height: 36px; border-radius: 50%; background: var(--gradient); border: none; color: white; font-size: 13px; cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: 0.24s; }
        .play-btn-circle:hover { transform: scale(1.08); }
        .play-btn-circle.playing { background: var(--warning-yellow); color: #121212; }
        .play-btn-circle.before-btn { background: #555; }

        .waveform-canvas { width: 100%; height: 60px; cursor: pointer; border-radius: 6px; }
        .before-side .waveform-canvas { background: rgba(255,255,255,0.03); }
        .after-side .waveform-canvas { background: rgba(76,175,80,0.05); }

        .simple-progress { flex: 1; height: 6px; background: rgba(255,255,255,0.1); border-radius: 3px; overflow: hidden; cursor: pointer; position: relative; }
        .simple-progress-bar { height: 100%; width: 0; background: var(--primary); border-radius: 3px; transition: width 0.1s linear; }
        .before-side .simple-progress-bar { background: #888; }

        .player-time { font-size: 12px; color: var(--text-secondary); font-weight: 500; flex-shrink: 0; min-width: 76px; text-align: right; font-variant-numeric: tabular-nums; }
        .player-time .current { color: var(--primary-light); }
        .before-side .player-time .current { color: #888; }

        .volume-control { display: none; }
        .volume-control i { color: var(--text-muted); font-size: 12px; }
        .volume-slider { flex: 1; height: 3px; background: var(--card-border); border-radius: 2px; outline: none; -webkit-appearance: none; appearance: none; cursor: pointer; }
        .volume-slider::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 12px; height: 12px; background: var(--primary); border-radius: 50%; cursor: pointer; }
        .volume-slider::-moz-range-thumb { width: 12px; height: 12px; background: var(--primary); border-radius: 50%; cursor: pointer; border: none; }

        .result-actions-bar { margin-top: 16px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

        .section { padding: 48px 0; }
        .section-title { text-align: center; margin-bottom: 36px; }
        .section-title h2 { font-size: 28px; font-weight: 700; margin-bottom: 10px; }
        .section-title p { color: var(--text-secondary); max-width: 620px; margin: 0 auto; line-height: 1.7; font-size: 15px; }

        .scenarios-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .scenario-card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 16px; padding: 24px 20px; transition: all 0.24s; box-shadow: var(--shadow-soft); }
        @media (hover: hover) {
            .scenario-card:hover { border-color: var(--primary-light); transform: scale(1.02); box-shadow: 0 12px 28px rgba(76,175,80,0.15); }
        }
        .scenario-card .icon { width: 44px; height: 44px; background: rgba(76,175,80,0.1); border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; font-size: 18px; color: var(--primary-light); }
        .scenario-card h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
        .scenario-card p { color: var(--text-secondary); font-size: 13px; line-height: 1.7; }

        .privacy-block { background: linear-gradient(135deg, rgba(76,175,80,0.06), rgba(93,209,255,0.04)); border: 1px solid var(--card-border-green); border-radius: 16px; padding: 28px 32px; text-align: center; margin-top: 24px; }
        .privacy-block .icon { font-size: 32px; color: var(--primary-light); margin-bottom: 12px; }
        .privacy-block h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
        .privacy-block p { color: var(--text-secondary); font-size: 14px; max-width: 720px; margin: 0 auto; line-height: 1.8; }

        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 10px; margin-bottom: 10px; overflow: hidden; }
        .faq-q { width: 100%; text-align: left; background: none; border: none; color: var(--text-primary); font-size: 15px; font-weight: 500; padding: 16px 20px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; transition: 0.24s; }
        .faq-q:hover { color: var(--primary-light); }
        .faq-q i { transition: transform 0.24s; flex-shrink: 0; color: var(--primary); }
        .faq-item.active .faq-q i { transform: rotate(180deg); }
        .faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 20px; }
        .faq-item.active .faq-a { max-height: 500px; padding-bottom: 18px; }
        .faq-a p { color: var(--text-secondary); font-size: 14px; line-height: 1.8; }

        .cta-section { padding: 56px 0; text-align: center; background: linear-gradient(180deg, var(--darker-bg), rgba(18,18,18,0.9)); border-top: 1px solid var(--card-border); }
        .cta-section h2 { font-size: 28px; font-weight: 700; margin-bottom: 12px; }
        .cta-section p { color: var(--text-secondary); max-width: 540px; margin: 0 auto 28px; line-height: 1.7; }
        .cta-section .cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        .progress-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.85); display: none; justify-content: center; align-items: center; z-index: 2000; backdrop-filter: blur(5px); padding: 16px; }
        .progress-overlay.active { display: flex; }
        .progress-modal { background-color: var(--card-bg); border-radius: 16px; padding: 28px; text-align: center; max-width: 400px; min-width: 280px; width: 90%; border: 1px solid var(--card-border); max-height: 90vh; overflow-y: auto; }
        .modal-header h3 { font-size: 19px; font-weight: 700; color: var(--primary-light); margin-bottom: 10px; }
        .modal-sub { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; }
        .progress-ring-wrap { display: flex; justify-content: center; position: relative; width: 100px; height: 100px; margin: 0 auto 20px; }
        .progress-ring-mini svg { transform: rotate(-90deg); width: 100px; height: 100px; }
        .progress-ring-mini .bg { fill: none; stroke: var(--card-border); stroke-width: 8; }
        .progress-ring-mini .progress { fill: none; stroke: url(#gradientStroke); stroke-width: 8; stroke-linecap: round; transition: stroke-dashoffset 0.3s; }
        .percent-text { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 20px; font-weight: 700; color: var(--primary-light); }
        .progress-status { font-size: 13px; color: var(--text-muted); margin-bottom: 18px; }
        .processing-steps { text-align: left; padding-top: 16px; border-top: 1px solid var(--card-border); }
        .processing-step { display: flex; align-items: center; gap: 10px; padding: 5px 0; color: var(--text-muted); font-size: 14px; transition: color 0.3s; }
        .processing-step .status-icon { width: 20px; text-align: center; }
        .processing-step.active { color: var(--primary-light); }
        .processing-step.done { color: var(--primary); }
        .cancel-btn { background: transparent; color: var(--text-muted); border: 1px solid var(--card-border); padding: 8px 20px; border-radius: 10px; cursor: pointer; transition: all 0.24s; font-size: 14px; }
        .cancel-btn:disabled { opacity: 0.4; cursor: not-allowed; }
        .cancel-btn:hover:not(:disabled) { color: var(--error-red); border-color: var(--error-red); }

        .toast-container { position: fixed; bottom: 30px; right: 30px; z-index: 999; display: flex; flex-direction: column; gap: 10px; align-items: flex-end; }
        .toast { background: var(--card-bg); border: 1px solid var(--primary); border-radius: 10px; padding: 12px 20px; color: white; font-weight: 500; font-size: 14px; display: flex; align-items: center; gap: 10px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); max-width: 400px; transform: translateX(120%); opacity: 0; transition: all 0.3s ease; }
        .toast.show { transform: translateX(0); opacity: 1; }
        .toast.error { border-color: var(--error-red); color: var(--error-red); }
        .toast.warning { border-color: var(--warning-yellow); color: var(--warning-yellow); }

        /* ===== 导航栏（与全站 index.css 保持一致） ===== */
        .navbar {
            position: fixed; top: 0; width: 100%;
            background-color: rgba(10, 10, 10, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000; padding: 20px 0;
            border-bottom: 1px solid rgba(76, 175, 80, 0.1);
            transition: all 0.3s ease;
        }
        .navbar.scrolled { padding: 15px 0; background-color: rgba(10, 10, 10, 0.98); }
        .nav-container { display: flex; justify-content: space-between; align-items: center; }
        .logo { display: flex; align-items: center; gap: 10px; font-size: 24px; font-weight: 700; color: var(--primary); text-decoration: none; }
        .logo i { font-size: 28px; }
        .logo span { color: white; }
        .logo::after { display: none; }
        .nav-links { display: flex; gap: 30px; }
        .nav-links a { font-weight: 500; font-size: 16px; transition: color 0.3s; text-decoration: none; color: var(--text-primary); position: relative; }
        .nav-links a::after { content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 2px; background-color: var(--primary); transition: width 0.3s; }
        .nav-links a:hover { color: var(--primary); }
        .nav-links a:hover::after { width: 100%; }
        .nav-buttons { display: flex; gap: 15px; align-items: center; }
        .nav-buttons .btn { padding: 12px 28px; font-size: 16px; }
        .mobile-menu-btn { display: none; background: none; border: none; color: white; font-size: 24px; cursor: pointer; }

        /* ===== 页脚 ===== */
        .footer { background: var(--dark-bg); padding: 40px 0 20px; margin-top: 60px; border-top: 1px solid var(--card-border); }
        .footer-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(150px,1fr)); gap: 25px; margin-bottom: 30px; }
        .footer-column h3 { font-size: 16px; margin-bottom: 14px; color: var(--primary); }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 6px; }
        .footer-links a { color: var(--text-secondary); font-size: 14px; transition: color 0.3s; text-decoration: none; }
        .footer-links a:hover { color: var(--primary); }
        .copyright { text-align: center; padding-top: 20px; border-top: 1px solid var(--card-border); color: var(--text-secondary); font-size: 13px; }
        .beian-link { color: var(--text-secondary); text-decoration: none; margin-left: 8px; }
        .beian-link:hover { color: var(--primary); }

        /* ===== 移动菜单 ===== */
        .mobile-menu {
            position: fixed; top: 62px; left: 0; width: 100%;
            background: var(--darker-bg); padding: 20px;
            border-top: 1px solid var(--card-border);
            transform: translateY(-120%); opacity: 0; visibility: hidden;
            transition: all 0.3s; z-index: 999;
        }
        .mobile-menu.active { transform: translateY(0); opacity: 1; visibility: visible; }
        .mobile-nav-links { display: flex; flex-direction: column; gap: 12px; margin-bottom: 18px; }
        .mobile-nav-links a { font-size: 17px; padding: 8px 0; border-bottom: 1px solid var(--card-border); text-decoration: none; color: var(--text-secondary); }
        .mobile-buttons { display: flex; flex-direction: column; gap: 10px; }

        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
        }

        @media (max-width: 1024px) {
            .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
            .extra-toggles { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .nav-links, .nav-buttons { display: none; }
            .mobile-menu-btn { display: block; }
            .hero-content h1 { font-size: 32px; }
            .hero-content p { font-size: 15px; }
            .main-card { padding: 22px 18px; }
            .section-title h2 { font-size: 24px; }
            .scenarios-grid { grid-template-columns: 1fr; }
            .action-bar .btn-primary { width: 100%; min-width: auto; }
            .action-bar .btn-secondary { width: 100%; }
            .compare-wrapper { grid-template-columns: 1fr; gap: 12px; }
            .result-item-top { flex-direction: column; align-items: flex-start; }
            .upload-zone { padding: 40px 20px; }
            .upload-zone .icon { font-size: 44px; }
        }
        @media (max-width: 480px) {
            .hero-content h1 { font-size: 28px; line-height: 1.3; }
            .file-info-row { flex-direction: column; align-items: flex-start; }
            .denoise-levels { grid-template-columns: 1fr; }
        }