* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: #f6f2ee;
            color: #3d2c1e;
            padding: 20px 12px;
            min-height: 100vh;
        }
        .container {
            max-width: 1000px;
            margin: 0 auto;
            background: #fffcf9;
            border-radius: 16px;
            box-shadow: 0 4px 30px rgba(0,0,0,0.08);
            padding: 24px 28px;
        }
        .breadcrumb {
            padding: 0 0 14px 0;
            font-size: clamp(13px, 1.6vw, 14px);
            color: #a0806a;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 2px;
            overflow-x: auto;
            border-bottom: 2px solid #e8ddd0;
            margin-bottom: 16px;
        }
        .breadcrumb .home-link {
            color: #7a5a3a;
            text-decoration: none;
            padding: 2px 8px;
            border-radius: 4px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 500;
        }
        .breadcrumb .home-link:hover {
            background: #f0e8e0;
        }
        .breadcrumb a {
            color: #7a5a3a;
            text-decoration: none;
            padding: 2px 6px;
            border-radius: 4px;
            white-space: nowrap;
        }
        .breadcrumb a:hover {
            background: #f0e8e0;
        }
        .breadcrumb .sep {
            color: #d0c0b0;
            padding: 0 2px;
        }
        .breadcrumb .current {
            color: #5a3d2b;
            font-weight: 500;
            white-space: nowrap;
        }
        .header {
            padding-bottom: 12px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }
        .header .file-info {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .header .file-info .icon-wrapper {
            font-size: 32px;
            color: #d4a86a;
            width: 44px;
            text-align: center;
        }
        .header .file-info .file-name {
            font-size: clamp(18px, 2.5vw, 22px);
            font-weight: 600;
            color: #3d2c1e;
        }
        .header .file-info .file-meta {
            font-size: 13px;
            color: #a0806a;
        }
        .file-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 20px;
    margin-top: 4px;
    font-size: 14px;
    color: #888;
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.meta-item i {
    width: 16px;
    font-size: 13px;
    color: #aaa;
}
        .header .actions {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .header .actions a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #7a5a3a;
            text-decoration: none;
            font-size: 14px;
            padding: 6px 18px;
            border-radius: 8px;
            border: 1px solid #e0d5c8;
            transition: background 0.3s;
        }
        .header .actions a:hover {
            background: #f0e8e0;
        }
        .header .actions .btn-download {
            background: #d4a86a;
            color: #fff;
            border-color: #d4a86a;
        }
        .header .actions .btn-download:hover {
            background: #c49a5a;
            border-color: #c49a5a;
        }
        .header .actions .btn-preview {
            background: #4a8bc2;
            color: #fff;
            border-color: #4a8bc2;
        }
        .header .actions .btn-preview:hover {
            background: #3a7ab0;
            border-color: #3a7ab0;
        }
        .text-content {
            font-family: "Georgia", "Times New Roman", "SimSun", "Songti SC", serif;
            font-size: 16px;
            line-height: 1.9;
            color: #3d2c1e;
            white-space: pre-wrap;
            word-wrap: break-word;
            padding: 2px 0;
            max-height: 80vh;
            overflow-y: auto;
            background: #faf8f6;
            border-radius: 8px;
            padding: 16px;
        }
        .preview-container {
            margin: 10px 0;
        }
        .preview-container img {
            max-width: 100%;
            max-height: 75vh;
            border-radius: 8px;
            display: block;
            margin: 0 auto;
        }
        .preview-container video {
            width: 100%;
            max-height: 75vh;
            border-radius: 8px;
            background: #1a1a1a;
        }
        .preview-container audio {
            width: 100%;
            border-radius: 8px;
        }
        .preview-container embed,
        .preview-container object {
            width: 100%;
            height: 75vh;
            border-radius: 8px;
            border: 1px solid #e8ddd0;
        }
        .binary-info {
            text-align: center;
            padding: 40px 20px;
        }
        .binary-info .big-icon {
            font-size: 60px;
            color: #d4a86a;
            margin-bottom: 16px;
        }
        .binary-info .desc {
            font-size: 16px;
            color: #7a5a3a;
        }
        .binary-info .hint {
            font-size: 14px;
            color: #b8a090;
            margin-top: 8px;
        }
        .footer-info {
            margin-top: 18px;
            padding-top: 12px;
            border-top: 1px solid #e8ddd0;
            font-size: 13px;
            color: #b8a090;
            text-align: center;
        }
        .site-footer {
            max-width: 900px;
            margin: 20px auto 0 auto;
            background: #fffcf9;
            border-radius: 16px;
            box-shadow: 0 4px 30px rgba(0,0,0,0.08);
            padding: 24px 20px;
            text-align: center;
        }
        .site-footer .footer-links {
            display: flex;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }
        .site-footer .footer-links a {
            color: #7a5a3a;
            text-decoration: none;
            font-size: 14px;
        }
        .site-footer .footer-links a:hover {
            text-decoration: underline;
        }
        .site-footer .copyright {
            font-size: 13px;
            color: #b8a090;
            line-height: 1.8;
        }
        .site-footer .copyright .sutra {
            margin-top: 8px;
            font-size: 14px;
            color: #a0806a;
            letter-spacing: 2px;
        }
        @media (max-width: 640px) {
            body { padding: 10px 6px; }
            .container { padding: 16px 14px; }
            .header { flex-direction: column; align-items: stretch; gap: 10px; }
            .header .file-info .file-name { font-size: 16px; }
            .header .actions { justify-content: flex-start; }
            .header .actions a { font-size: 13px; padding: 5px 12px; }
            .text-content { font-size: 15px; }
            .preview-container embed,
            .preview-container object { height: 50vh; }
            .preview-container img { max-height: 50vh; }
            .preview-container video { max-height: 50vh; }
            .site-footer { padding: 18px 14px; }
            .site-footer .footer-links { gap: 16px; }
        }