:root {
            --bg-base: #0a0505;
            --text-main: #fef2f2;
            --text-muted: #9ca3af;
            --red-300: #fca5a5;
            --red-400: #f87171;
            --red-500: #ef4444;
            --red-600: #dc2626;
            --red-800: #991b1b;
            --red-900: #7f1d1d;
            --red-950: #450a0a;
            --glass-bg: rgba(0, 0, 0, 0.5);
            --border-glow: 0 0 15px rgba(220, 38, 38, 0.3);
            --font-sans: system-ui, -apple-system, sans-serif;
            --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            font-family: var(--font-sans);
            overflow-x: hidden;
            min-height: 100vh;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        /* 自定义滚动条 */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: rgba(0, 0, 0, 0.3); }
        ::-webkit-scrollbar-thumb { background: rgba(220, 38, 38, 0.3); border-radius: 10px; }
        ::-webkit-scrollbar-thumb:hover { background: rgba(220, 38, 38, 0.5); }

        /* ================= 背景科技光效 ================= */
        .bg-effects {
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 0;
        }
        .glow-orb-1 {
            position: absolute;
            top: -10%; left: -10%;
            width: 50%; height: 50%;
            background: rgba(127, 29, 29, 0.2);
            filter: blur(120px);
            border-radius: 50%;
            mix-blend-mode: screen;
        }
        .glow-orb-2 {
            position: absolute;
            bottom: -10%; right: -10%;
            width: 40%; height: 40%;
            background: rgba(153, 27, 27, 0.1);
            filter: blur(100px);
            border-radius: 50%;
            mix-blend-mode: screen;
        }
        .tech-grid {
            position: absolute;
            inset: 0;
            background-image: 
                linear-gradient(rgba(220, 38, 38, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(220, 38, 38, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, #000 10%, transparent 100%);
        }

        /* ================= 顶部导航栏 ================= */
        .topbar {
            position: sticky;
            top: 0;
            z-index: 40;
            width: 100%;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid rgba(127, 29, 29, 0.5);
            box-shadow: 0 0 20px rgba(220, 38, 38, 0.1);
        }
        .topbar-content {
            margin: 0 auto;
            max-width: 1280px;
            padding: 0 1rem;
            height: 5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo-container {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .logo-icon-box {
            position: relative;
            width: 3rem; height: 3rem;
            background: rgba(69, 10, 10, 0.5);
            border-radius: 0.5rem;
            border: 1px solid rgba(239, 68, 68, 0.3);
            display: flex; align-items: center; justify-content: center;
            overflow: hidden;
        }
        .logo-icon-box svg { color: var(--red-500); width: 1.5rem; height: 1.5rem; z-index: 10; }
        .scan-line {
            position: absolute; left: 0; width: 100%; height: 2px;
            background: var(--red-400); opacity: 0.5;
            box-shadow: 0 0 8px var(--red-400);
            animation: scan 2s ease-in-out infinite;
        }
        .app-title {
            font-size: 1.5rem; font-weight: bold;
            background: linear-gradient(to right, var(--red-400), #fecaca, #ffffff);
            -webkit-background-clip: text; color: transparent;
            letter-spacing: 0.1em;
        }
        .app-subtitle {
            font-size: 0.75rem; color: rgba(239, 68, 68, 0.8);
            text-transform: uppercase; letter-spacing: 0.2em; font-family: var(--font-mono);
            margin-top: 0.125rem;
        }
        
        /* 搜索框区 */
        .search-area {
            display: flex; align-items: center; gap: 1rem; width: 33%;
        }
        .search-input-wrapper { position: relative; width: 100%; }
        .search-icon {
            position: absolute; left: 0.75rem; top: 50%; transform: translateY(-50%);
            width: 1rem; height: 1rem; color: rgba(248, 113, 113, 0.7);
        }
        .search-input {
            width: 100%; padding: 0.5rem 2.5rem;
            background: rgba(69, 10, 10, 0.2);
            border: 1px solid rgba(127, 29, 29, 0.5);
            border-radius: 0.375rem; color: #fee2e2;
            font-size: 0.875rem; outline: none; transition: all 0.3s;
            backdrop-filter: blur(4px);
        }
        .search-input:focus {
            background: rgba(127, 29, 29, 0.4);
            border-color: var(--red-500);
            box-shadow: 0 0 0 1px var(--red-500);
        }
        .search-btn {
        min-width: 100px;
            padding: 0.5rem 1rem; white-space: nowrap;
            background: linear-gradient(to right, var(--red-800), var(--red-600));
            color: white; font-size: 0.875rem; font-weight: 500;
            border-radius: 0.25rem; border: 1px solid rgba(239, 68, 68, 0.5);
            box-shadow: 0 0 10px rgba(220, 38, 38, 0.3);
            transition: all 0.3s; position: relative; overflow: hidden;
        }
        .search-btn:hover { background: linear-gradient(to right, var(--red-700), var(--red-500)); }

        /* ================= 主内容区 ================= */
        main {
            max-width: 1280px; margin: 0 auto; padding: 2rem 1rem;
            position: relative; z-index: 10;
        }

        /* 导航 Tabs */
        .nav-container { margin-bottom: 2.5rem; }
        .main-tabs {
            display: flex; gap: 0.5rem;
            border-bottom: 1px solid rgba(127, 29, 29, 0.5);
            margin-bottom: 1.5rem;
        }
        .tab-btn {
            position: relative; padding: 0.75rem 1.5rem;
            font-size: 0.875rem; font-weight: 500; letter-spacing: 0.05em;
            color: rgba(239, 68, 68, 0.6); transition: color 0.3s;
        }
        .tab-btn:hover { color: var(--red-300); }
        .tab-btn.active { color: white; }
        .tab-btn.active::after {
            content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px;
            background: var(--red-500); box-shadow: 0 0 10px var(--red-500);
        }
        .tab-btn.active::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(to top, rgba(239, 68, 68, 0.1), transparent);
        }

        /* 子分类 Tags */
        .sub-tags { display: flex; flex-wrap: wrap; gap: 0.75rem; }
        .tag-btn {
            display: flex; align-items: center; gap: 0.5rem;
            padding: 0.375rem 1rem; border-radius: 9999px;
            font-size: 0.75rem; letter-spacing: 0.05em;
            background: transparent; border: 1px solid rgba(127, 29, 29, 0.5);
            color: rgba(248, 113, 113, 0.7); transition: all 0.3s;
        }
        .tag-btn:hover { border-color: rgba(239, 68, 68, 0.5); color: var(--red-300); }
        .tag-btn.active {
            background: rgba(69, 10, 10, 0.4);
            border-color: rgba(239, 68, 68, 0.8);
            color: white; box-shadow: 0 0 15px rgba(220, 38, 38, 0.2);
        }
        .tag-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--red-400); }

        /* 搜索状态栏 */
        .search-status {
            display: none; margin-bottom: 2rem; padding: 1rem;
            background: rgba(69, 10, 10, 0.3);
            border: 1px solid rgba(239, 68, 68, 0.3);
            border-radius: 0.5rem; backdrop-filter: blur(8px);
            align-items: flex-start; gap: 0.75rem;
        }
        .search-status.active { display: flex; }
        .search-status-text { color: #fecaca; font-size: 0.875rem; font-weight: 500; }
        .clear-search {
            display: block; margin-top: 0.5rem; font-size: 0.75rem;
            color: var(--red-400); text-decoration: underline; text-underline-offset: 4px;
        }

        /* ================= 曲目卡片网格 ================= */
        .grid-container {
            display: grid; gap: 1.5rem;
            grid-template-columns: repeat(1, 1fr);
        }
        @media (min-width: 640px) { .grid-container { grid-template-columns: repeat(2, 1fr); } }
        @media (min-width: 1024px) { .grid-container { grid-template-columns: repeat(3, 1fr); } }
        @media (min-width: 1280px) { .grid-container { grid-template-columns: repeat(4, 1fr); } }

        .card {
            position: relative; border-radius: 0.75rem; overflow: hidden;
            cursor: pointer; transition: all 0.3s ease; border: 1px solid;
        }
        /* 四角修饰 */
        .card::before, .card::after { content: ''; position: absolute; width: 12px; height: 12px; opacity: 0; transition: opacity 0.3s; z-index: 10; pointer-events: none;}
        .card::before { top: 0; left: 0; border-top: 2px solid rgba(239, 68, 68, 0.3); border-left: 2px solid rgba(239, 68, 68, 0.3); }
        .card::after { bottom: 0; right: 0; border-bottom: 2px solid rgba(239, 68, 68, 0.3); border-right: 2px solid rgba(239, 68, 68, 0.3); }
        .card-inner-deco::before, .card-inner-deco::after { content: ''; position: absolute; width: 12px; height: 12px; opacity: 0; transition: opacity 0.3s; z-index: 10; pointer-events: none;}
        .card-inner-deco::before { top: 0; right: 0; border-top: 2px solid rgba(239, 68, 68, 0.3); border-right: 2px solid rgba(239, 68, 68, 0.3); }
        .card-inner-deco::after { bottom: 0; left: 0; border-bottom: 2px solid rgba(239, 68, 68, 0.3); border-left: 2px solid rgba(239, 68, 68, 0.3); }
        .card:hover::before, .card:hover::after, .card:hover .card-inner-deco::before, .card:hover .card-inner-deco::after { opacity: 1; }

        /* 详细卡片样式 (红色重点) */
        .card.detailed {
            border-color: rgba(153, 27, 27, 0.5); background: rgba(0, 0, 0, 0.4);
        }
        .card.detailed:hover {
            border-color: rgba(239, 68, 68, 0.8); background: rgba(69, 10, 10, 0.2);
            box-shadow: 0 0 25px rgba(220, 38, 38, 0.15);
        }
        .card-cover-wrapper { position: relative; height: 10rem; overflow: hidden; }
        .card-cover-wrapper img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s ease-out; }
        .card:hover .card-cover-wrapper img { transform: scale(1.05); }
        .card-cover-gradient { position: absolute; inset: 0; background: linear-gradient(to top, #000, rgba(0,0,0,0.2), transparent); z-index: 1; }
        .badge-detailed {
            position: absolute; top: 0.5rem; right: 0.5rem; z-index: 2;
            background: rgba(220, 38, 38, 0.9); color: white; font-size: 10px; font-family: var(--font-mono);
            padding: 2px 6px; border-radius: 4px; letter-spacing: 0.1em; border: 1px solid rgba(248, 113, 113, 0.5);
            backdrop-filter: blur(4px);
        }
        .play-btn-float {
            position: absolute; bottom: 0.75rem; left: 0.75rem; z-index: 2;
            width: 2rem; height: 2rem; border-radius: 50%;
            background: rgba(220, 38, 38, 0.8); border: 1px solid rgba(255, 255, 255, 0.2);
            display: flex; align-items: center; justify-content: center;
            backdrop-filter: blur(4px); transition: transform 0.3s;
        }
        .card:hover .play-btn-float { transform: scale(1.1); }
        .play-btn-float svg { width: 1rem; height: 1rem; color: white; margin-left: 2px; }

        /* 简略卡片样式 (黑色列表) */
        .card.simple {
            border-color: rgba(31, 41, 55, 0.5); background: rgba(0, 0, 0, 0.2); opacity: 0.8;
        }
        .card.simple:hover { opacity: 1; border-color: rgba(127, 29, 29, 0.8); }
        .simple-dot { position: absolute; top: 1.25rem; right: 1.25rem; width: 6px; height: 6px; border-radius: 50%; background: #4b5563; }

        .card-content { padding: 1.25rem; position: relative; }
        .type-label {
            display: inline-block; font-size: 10px; text-transform: uppercase; font-family: var(--font-mono);
            color: rgba(239, 68, 68, 0.7); background: rgba(69, 10, 10, 0.4);
            padding: 2px 8px; border-radius: 4px; border: 1px solid rgba(127, 29, 29, 0.5);
            margin-bottom: 0.5rem; letter-spacing: 0.1em;
        }
        .card-title { font-weight: bold; margin-bottom: 0.5rem; letter-spacing: 0.05em; font-size: 1.125rem; color: white; transition: color 0.3s; }
        .card.simple .card-title { color: #d1d5db; font-size: 1rem; }
        .card.detailed:hover .card-title { color: var(--red-300); }
        .card-desc { font-size: 0.875rem; color: #9ca3af; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.5; }
        
        /* 底部科技条 */
        .card-footer-tech {
            margin-top: 1rem; padding-top: 1rem; border-top: 1px solid rgba(127, 29, 29, 0.3);
            display: flex; justify-content: space-between; align-items: center;
            opacity: 0.5; transition: opacity 0.3s;
        }
        .card:hover .card-footer-tech { opacity: 1; }
        .tech-bars { display: flex; gap: 4px; }
        .tech-bars span { width: 4px; height: 12px; border-radius: 2px; }
        .tb-1 { background: var(--red-500); animation: pulseHeight 1s infinite alternate; }
        .tb-2 { background: var(--red-700); }
        .tb-3 { background: var(--red-900); }
        .tech-label { font-size: 10px; font-family: var(--font-mono); color: var(--red-400); }

        /* 无数据 */
        .no-data { text-align: center; padding: 5rem 0; display: none; }
        .no-data.active { display: block; }
        .no-data-icon { width: 4rem; height: 4rem; border-radius: 50%; border: 1px solid rgba(127, 29, 29, 0.5); background: rgba(69, 10, 10, 0.2); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 1rem; }
        .no-data-icon svg { width: 1.5rem; height: 1.5rem; color: rgba(239, 68, 68, 0.5); }

        /* ================= 详情弹窗 ================= */
        .modal-overlay {
            position: fixed; inset: 0; background: rgba(0, 0, 0, 0.8); backdrop-filter: blur(8px);
            z-index: 50; display: none; align-items: center; justify-content: center; padding: 1rem;
        }
        .modal-overlay.active { display: flex; }
        .modal-container {
            position: relative; width: 100%; max-width: 56rem; background: #0a0505;
            border: 1px solid rgba(239, 68, 68, 0.4); border-radius: 0.75rem;
            box-shadow: 0 0 50px rgba(220, 38, 38, 0.2); overflow: hidden;
            display: flex; flex-direction: column; max-height: 90vh;
        }
        .modal-top-line { position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: linear-gradient(to right, var(--red-900), var(--red-500), var(--red-900)); }
        
        .modal-header {
            display: flex; justify-content: space-between; align-items: center;
            padding: 1.5rem; border-bottom: 1px solid rgba(127, 29, 29, 0.5); background: rgba(69, 10, 10, 0.1);
        }
        .modal-meta-tags { display: flex; gap: 0.75rem; margin-bottom: 0.25rem; }
        .meta-tag { font-size: 0.75rem; font-family: var(--font-mono); padding: 2px 8px; border-radius: 4px; }
        .meta-tag.primary { color: var(--red-400); border: 1px solid rgba(239, 68, 68, 0.3); background: rgba(69, 10, 10, 0.4); }
        .meta-tag.secondary { color: #9ca3af; border: 1px solid #374151; background: rgba(17, 24, 39, 0.5); }
        .modal-title { font-size: 1.5rem; font-weight: bold; color: white; letter-spacing: 0.05em; }
        .close-btn { padding: 0.5rem; border-radius: 50%; transition: background 0.3s; color: rgba(239, 68, 68, 0.7); }
        .close-btn:hover { background: rgba(127, 29, 29, 0.3); color: var(--red-400); }

        .modal-body { padding: 1.5rem; overflow-y: auto; flex: 1; position: relative; }
        .modal-bg-logo { position: absolute; top: 5rem; right: 5rem; width: 16rem; height: 16rem; color: rgba(127, 29, 29, 0.05); pointer-events: none; }
        
        /* 详细内容布局 */
        .detail-content { display: none; flex-direction: column; gap: 2rem; position: relative; z-index: 10; }
        .detail-content.active { display: flex; }
        
        /* 播放器模拟 */
        .player-mockup { background: rgba(0,0,0,0.5); border: 1px solid rgba(127, 29, 29, 0.5); border-radius: 0.5rem; overflow: hidden; }
        .player-cover-box { height: 12rem; position: relative; overflow: hidden; }
        .player-cover-box img { width: 100%; height: 100%; object-fit: cover; opacity: 0.6; }
        .player-cover-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.4); display: flex; align-items: center; justify-content: center; transition: background 0.3s; }
        .player-cover-box:hover .player-cover-overlay { background: rgba(0,0,0,0.2); }
        .big-play-btn { width: 4rem; height: 4rem; border-radius: 50%; border: 2px solid var(--red-500); background: rgba(69, 10, 10, 0.5); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: transform 0.3s; box-shadow: 0 0 20px rgba(220, 38, 38, 0.5); }
        .big-play-btn:hover { transform: scale(1.1); }
        .big-play-btn svg { width: 2rem; height: 2rem; color: white; margin-left: 4px; }
        .player-controls { padding: 1rem; background: linear-gradient(to bottom, rgba(69, 10, 10, 0.4), black); display: flex; align-items: center; gap: 1rem; }
        .player-controls svg { width: 1.25rem; height: 1.25rem; color: var(--red-400); cursor: pointer; transition: color 0.3s; }
        .player-controls svg:hover { color: var(--red-300); }
        .time-text { font-size: 0.75rem; font-family: var(--font-mono); color: rgba(252, 165, 165, 0.7); }
        .progress-container { flex: 1; height: 2rem; display: flex; align-items: center; position: relative; cursor: pointer; }
        .progress-bg { position: absolute; left: 0; right: 0; height: 4px; background: rgba(127, 29, 29, 0.3); border-radius: 2px; }
        .progress-bar { position: absolute; left: 0; height: 4px; background: var(--red-500); border-radius: 2px; transition: width 0.1s linear; box-shadow: 0 0 8px rgba(220, 38, 38, 0.5); }
        .progress-handle { position: absolute; width: 12px; height: 12px; background: white; border: 2px solid var(--red-500); border-radius: 50%; top: 50%; transform: translate(-50%, -50%); box-shadow: 0 0 10px rgba(220, 38, 38, 0.8); opacity: 0; transition: opacity 0.3s; }
        .progress-container:hover .progress-handle { opacity: 1; }
        .volume-control { position: relative; display: flex; align-items: center; gap: 0.5rem; }
        .volume-slider { width: 60px; height: 4px; background: rgba(127, 29, 29, 0.3); border-radius: 2px; position: relative; cursor: pointer; }
        .volume-fill { height: 100%; background: var(--red-500); border-radius: 2px; transition: width 0.1s; }

        /* 分析网格 */
        .analysis-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
        @media (min-width: 768px) { .analysis-grid { grid-template-columns: 1fr 1fr; } }
        
        .clue-box { padding: 1rem; background: rgba(69, 10, 10, 0.2); border: 1px solid rgba(127, 29, 29, 0.3); border-radius: 0.5rem; position: relative; overflow: hidden; margin-bottom: 1.5rem; }
        .clue-box.last { margin-bottom: 0; }
        .clue-box-line { position: absolute; left: 0; top: 0; bottom: 0; width: 4px; }
        .clue-box-line.red { background: rgba(220, 38, 38, 0.5); }
        .clue-box-line.orange { background: rgba(234, 88, 12, 0.5); }
        .clue-title { display: flex; align-items: center; gap: 0.5rem; font-weight: bold; margin-bottom: 0.75rem; letter-spacing: 0.05em; }
        .clue-title svg { width: 1rem; height: 1rem; }
        .clue-title.red-text { color: var(--red-300); }
        .clue-title.orange-text { color: #fdba74; }
        .clue-text { color: #d1d5db; font-size: 0.875rem; line-height: 1.6; }

        .deep-analysis { padding: 1.25rem; background: linear-gradient(to bottom right, rgba(127, 29, 29, 0.2), transparent); border: 1px solid rgba(239, 68, 68, 0.2); border-radius: 0.5rem; position: relative; }
        .deep-analysis-title { color: var(--red-400); font-weight: bold; margin-bottom: 1rem; font-size: 1.125rem; border-bottom: 1px solid rgba(239, 68, 68, 0.2); padding-bottom: 0.5rem; display: inline-block; }
        .deep-analysis-text { color: #e5e7eb; font-size: 0.875rem; line-height: 1.8; text-indent: 1.75rem; text-align: justify; }

        /* AI 板块 */
        .ai-block { padding: 1.25rem; background: black; border: 1px solid rgba(239, 68, 68, 0.5); border-radius: 0.5rem; box-shadow: inset 0 0 20px rgba(220, 38, 38, 0.1); }
        .ai-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
        .ai-title { display: flex; align-items: center; gap: 0.5rem; font-weight: bold; background: linear-gradient(to right, var(--red-400), #fb923c); -webkit-background-clip: text; color: transparent; letter-spacing: 0.05em; }
        .ai-title svg { color: var(--red-400); width: 1.25rem; height: 1.25rem; }
        .ai-status { font-size: 10px; color: var(--red-500); border: 1px solid rgba(239, 68, 68, 0.5); padding: 2px 8px; border-radius: 4px; font-family: var(--font-mono); animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }
        .ai-content p { color: #9ca3af; font-size: 0.875rem; font-family: var(--font-mono); line-height: 1.6; margin-bottom: 0.5rem; }
        .ai-content span { color: var(--red-400); }

        /* 简略内容布局 */
        .simple-content { display: none; flex-direction: column; align-items: center; justify-content: center; padding: 5rem 0; text-align: center; position: relative; z-index: 10; }
        .simple-content.active { display: flex; }
        .simple-icon-box { width: 4rem; height: 4rem; border-radius: 50%; background: #111827; border: 1px solid #1f2937; display: flex; align-items: center; justify-content: center; margin-bottom: 1.5rem; }
        .simple-icon-box svg { width: 2rem; height: 2rem; color: #4b5563; }
        .simple-title { font-size: 1.25rem; color: #d1d5db; font-weight: bold; margin-bottom: 0.5rem; }
        .simple-type { font-size: 0.875rem; padding: 2px 12px; background: #111827; color: #6b7280; border-radius: 9999px; border: 1px solid #1f2937; margin-bottom: 1.5rem; }
        .simple-desc { color: #9ca3af; max-width: 28rem; font-size: 0.875rem; line-height: 1.5; }
        .simple-note { margin-top: 2rem; padding: 1rem; background: rgba(69, 10, 10, 0.1); border: 1px solid rgba(127, 29, 29, 0.3); border-radius: 0.25rem; font-size: 0.75rem; color: rgba(239, 68, 68, 0.6); font-family: var(--font-mono); max-width: 24rem; }

        .modal-footer { padding: 1rem; border-top: 1px solid rgba(127, 29, 29, 0.5); background: rgba(0,0,0,0.8); display: flex; justify-content: flex-end; }
        .close-text-btn { padding: 0.5rem 1.5rem; background: transparent; border: 1px solid rgba(239, 68, 68, 0.5); color: var(--red-400); border-radius: 0.25rem; font-size: 0.875rem; letter-spacing: 0.1em; font-family: var(--font-mono); transition: background 0.3s; }
        .close-text-btn:hover { background: rgba(127, 29, 29, 0.3); }

        /* ================= 动画 ================= */
        @keyframes scan { 0% { top: 0; } 50% { top: 100%; } 100% { top: 0; } }
        @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .5; } }
        @keyframes pulseHeight { 0% { transform: scaleY(0.5); } 100% { transform: scaleY(1.5); } }