* { 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 20px;
    }
    .header {
        border-bottom: 2px solid #e8ddd0;
        padding-bottom: 14px;
        margin-bottom: 12px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 10px;
    }
    .header h1 {
        font-size: clamp(18px, 4vw, 22px);
        font-weight: 600;
        color: #5a3d2b;
    }
    .header h1 a {
        color: #5a3d2b;
        text-decoration: none;
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .header h1 a:hover {
        color: #d4a86a;
    }
    .header h1 .fa-book {
        font-size: clamp(20px, 4vw, 24px);
        color: #d4a86a;
    }
    .header .count {
        font-size: 13px;
        color: #a0806a;
        background: #f0e8e0;
        padding: 3px 14px;
        border-radius: 20px;
    }
    .header-right {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-wrap: wrap;
    }
    .search-wrapper {
        position: relative;
        display: inline-block;
    }
    .search-wrapper .fa-search {
        position: absolute;
        left: 12px;
        top: 50%;
        transform: translateY(-50%);
        color: #b8a090;
        font-size: 14px;
    }
    .search-box {
        padding: 8px 14px 8px 36px;
        border: 1px solid #e0d5c8;
        border-radius: 8px;
        font-size: clamp(14px, 1.6vw, 15px);
        width: min(100%, 200px);
        outline: none;
        background: #fcfaf8;
    }
    .search-box:focus {
        border-color: #c4a888;
        box-shadow: 0 0 0 3px rgba(196,168,136,0.15);
    }
    .breadcrumb {
        padding: 6px 0 12px 0;
        font-size: clamp(13px, 1.8vw, 14px);
        color: #a0806a;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 2px;
        overflow-x: auto;
    }
    .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;
    }
    .file-list { list-style: none; }
    .file-list li {
        display: flex;
        align-items: center;
        padding: 8px 10px;
        border-radius: 6px;
        border-bottom: 1px solid #f0ebe5;
        min-height: 44px;
    }
    .file-list li:hover {
        background: #f8f4f0;
    }
    .file-list li a {
        display: flex;
        align-items: center;
        text-decoration: none;
        color: #3d2c1e;
        flex: 1;
        padding: 2px 0;
        font-size: clamp(14px, 1.8vw, 15px);
    }
    .file-list li a .icon {
        font-size: clamp(18px, 2.8vw, 22px);
        margin-right: 12px;
        width: 30px;
        text-align: center;
        flex-shrink: 0;
    }
    .file-list li a .name {
        word-break: break-word;
        flex: 1;
        line-height: 1.4;
    }
    .file-list li a .size {
        margin-left: auto;
        font-size: clamp(11px, 1.4vw, 13px);
        color: #a0806a;
        padding-left: 12px;
        flex-shrink: 0;
        white-space: nowrap;
    }
    .footer {
        margin-top: 20px;
        padding-top: 12px;
        border-top: 1px solid #e8ddd0;
        font-size: clamp(12px, 1.4vw, 13px);
        color: #b8a090;
        text-align: center;
    }
    .no-result {
        text-align: center;
        color: #b8a090;
        padding: 30px 0;
        display: none;
    }
    .parent-link { color: #7a5a3a; font-weight: 500; }
    .site-footer {
        max-width: 1000px;
        margin: 24px 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 12px; border-radius: 12px; }
        .header { flex-direction: column; align-items: stretch; gap: 8px; }
        .header-right { flex-direction: column; align-items: stretch; gap: 8px; width: 100%; }
        .search-box { width: 100%; font-size: 16px; padding: 10px 14px 10px 38px; }
        .header .count { align-self: flex-start; }
        .file-list li { padding: 10px 8px; }
        .site-footer { padding: 18px 14px; }
        .site-footer .footer-links { gap: 16px; }
    }