:root {
            --brand: #dc2626;
            --accent: #fb923c;
            --bg-deep: #141013;
            --text-light: #fef2f2;
            --border-grey: #3a2a2a;
            --card-bg: #1e1618;
            --shadow: 8px 8px 0 rgba(0,0,0,0.6);
        }
        * { border-radius: 0 !important; font-family: 'Inter', system-ui, sans-serif; }
        body { background-color: var(--bg-deep); color: var(--text-light); }
        h1,h2,h3,.display-font { font-weight: 800; letter-spacing: 0.01em; }
        h2 { font-weight: 700; border-left: 6px solid var(--brand); padding-left: 1rem; }
        .hard-card { background: var(--card-bg); border: 2px solid #4e3a3a; box-shadow: var(--shadow); }
        .outline-card { border: 2px solid #4a3232; background: rgba(20,16,19,0.8); transition: 0.2s; }
        .outline-card:hover { transform: translateY(-5px); box-shadow: 10px 10px 0 #000; }
        .btn-darkred { background: var(--brand); border: 2px solid #fff; color: white; font-weight: 600; padding: 0.6rem 1.8rem; box-shadow: 5px 5px 0 #000; transition: all 0.2s; }
        .btn-darkred:hover { background: var(--accent); color: #141013; border-color: var(--bg-deep); }
        .btn-ghost { border: 2px solid var(--accent); color: var(--accent); padding: 0.6rem 1.8rem; font-weight: 600; }
        .btn-ghost:hover { background: var(--accent); color: var(--bg-deep); }
        .section-number { font-size: 3rem; font-weight: 800; color: var(--brand); opacity: 0.3; margin-right: 0.5rem; }
        .header-scrolled { background: rgba(20,16,19,0.92) !important; backdrop-filter: blur(8px); border-bottom: 2px solid var(--brand); }
        .sticky-top-custom { transition: background 0.3s; }
        .navbar-underline a { border-bottom: 2px solid transparent; }
        .navbar-underline a:hover { border-bottom-color: var(--brand); }
        .hero-img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border: 4px solid #3e2c2c; box-shadow: 12px 12px 0 #000; }
        .badge-hd { background: #000; color: var(--accent); font-size: 0.65rem; border: 1px solid var(--accent); padding: 0.1rem 0.3rem; position: absolute; top: 8px; left: 8px; z-index: 2; }
        .poster-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; width: 100%; }
        @media (max-width: 1100px) { .poster-grid { grid-template-columns: repeat(3, 1fr); } }
        @media (max-width: 768px) { .poster-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 480px) { .poster-grid { grid-template-columns: repeat(2, 1fr); gap: 0.8rem; } }
        .poster-card { background: #1a1214; border: 2px solid #594040; aspect-ratio: 2/3; box-shadow: 4px 4px 0 #000; position: relative; transition: 0.2s; cursor: pointer; }
        .poster-card:hover { transform: scale(1.02); box-shadow: 10px 10px 0 #000; border-color: var(--accent); }
        .poster-card img { width: 100%; height: 100%; object-fit: cover; opacity: 0.85; }
        .poster-card .card-info { position: absolute; bottom: 0; background: linear-gradient(to top, #000, transparent); padding: 1rem 0.3rem 0.3rem; width: 100%; }
        .timeline-item { border-left: 4px solid var(--accent); padding-left: 1.2rem; margin-bottom: 1.2rem; }
        .timeline-item::before { content: "▹"; color: var(--brand); font-weight: 800; margin-right: 0.5rem; }
        .news-title { font-weight: 600; }
        .detail-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.8); backdrop-filter: blur(10px); z-index: 1050; display: none; align-items: center; justify-content: center; }
        .detail-card { max-width: 600px; background: #1b1517; border: 3px solid var(--brand); box-shadow: 20px 20px 0 #000; width: 90%; max-height: 85vh; overflow-y: auto; }
        .close-btn { font-size: 2rem; color: white; background: none; border: none; }
        .faq-item { border: 2px solid #403030; }
        .compare-tile { border: 2px solid var(--accent); }
        .step-num { font-size: 2rem; background: var(--brand); color: white; width: 3rem; height: 3rem; display: inline-flex; align-items: center; justify-content: center; }
        .nav-link-custom { color: #fef2f2 !important; font-weight: 500; margin: 0 0.7rem; text-decoration: none; border-bottom: 2px solid transparent; }
        .nav-link-custom:hover { border-bottom-color: var(--accent); }
        footer a { color: #ccc; text-decoration: none; }
        footer a:hover { color: var(--accent); }
        .tag-pill { background: #2f2222; color: #eee; padding: 0.2rem 0.8rem; border: 1px solid var(--accent); }
        .num-display { font-size: 2.2rem; font-weight: 800; color: var(--accent); }
        .accordion-button { background: var(--card-bg); color: white; border-bottom: 1px solid #4a3232; }
        .accordion-button:not(.collapsed) { background: var(--brand); color: #fff; }
        .movie-info-section .poster-card .card-info p { margin-bottom: 0.2rem; font-size: 0.75rem; }

/* --- 子页面追加 --- */
background: linear-gradient(135deg, rgba(20,16,19,.95) 0%, rgba(30,22,24,.9) 100%), url(' {随机图片}
.step-card { background: var(--card-bg); border: 1px solid var(--border-grey); border-radius: 12px; transition: transform .2s; }
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.tip-box { background: rgba(220,38,38,.08); border-left: 4px solid var(--brand); border-radius: 0 8px 8px 0; }
.faq-q { color: var(--accent); font-weight: 600; }
.table-guide { color: var(--text-light); }
.table-guide td { border-color: var(--border-grey); }
.quality-tag { display: inline-block; padding: 2px 10px; border-radius: 4px; font-size: .8rem; font-weight: 600; }
.quality-4k { background: rgba(220,38,38,.2); color: #ff6b6b; border: 1px solid var(--brand); }
.quality-1080 { background: rgba(251,146,60,.15); color: var(--accent); border: 1px solid var(--accent); }
.quality-720 { background: rgba(255,255,255,.08); color: #cbd5e1; border: 1px solid #475569; }
.device-icon { font-size: 2rem; color: var(--accent); }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#fef2f2 !important; border-color:rgba(255,255,255,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#fef2f2 !important; }
.accordion-item { background:rgba(255,255,255,.04) !important; color:#fef2f2 !important; border-color:rgba(255,255,255,.12) !important; }
.accordion-body { background:transparent !important; color:#fef2f2 !important; }
.accordion-header { background:transparent !important; }