*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            background: #0b0e14;
            color: #d9e1ec;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #141a24;
        }
        ::-webkit-scrollbar-thumb {
            background: #3a4a5c;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #5a7a9a;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        header {
            background: linear-gradient(135deg, #0f141e 0%, #1a2332 100%);
            border-bottom: 2px solid #2a3a4e;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: 2px;
            text-transform: uppercase;
            background: linear-gradient(90deg, #6dd5ed, #2193b0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: opacity 0.3s;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #6dd5ed;
            font-size: 1.6rem;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: initial;
            color: #7a8a9e;
            font-weight: 400;
            letter-spacing: 1px;
            display: block;
            margin-top: -4px;
        }
        nav.nav-main {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-list li a {
            color: #b0c4d8;
            text-decoration: none;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: all 0.25s;
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .nav-list li a i {
            font-size: 0.85rem;
            color: #5a8aaa;
        }
        .nav-list li a:hover,
        .nav-list li a.active {
            background: rgba(109, 213, 237, 0.12);
            color: #6dd5ed;
        }
        .nav-list li a:hover i,
        .nav-list li a.active i {
            color: #6dd5ed;
        }
        .hamburger {
            display: none;
            background: transparent;
            border: none;
            color: #d9e1ec;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .breadcrumb {
            padding: 14px 0 6px;
            font-size: 0.85rem;
            color: #7a8a9e;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb a {
            color: #5a8aaa;
            text-decoration: none;
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: #6dd5ed;
        }
        .breadcrumb .sep {
            color: #3a4a5c;
            margin: 0 4px;
        }
        .breadcrumb .current {
            color: #b0c4d8;
            font-weight: 500;
        }
        main {
            padding: 32px 0 60px;
        }
        h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 12px;
            background: linear-gradient(135deg, #f0f9ff, #6dd5ed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 40px 0 16px;
            color: #e4edf5;
            border-bottom: 2px solid #1f2c3c;
            padding-bottom: 10px;
            letter-spacing: -0.3px;
        }
        h2 i {
            color: #6dd5ed;
            margin-right: 10px;
            -webkit-text-fill-color: initial;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 28px 0 12px;
            color: #c8d8e8;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 20px 0 10px;
            color: #a8bcd0;
        }
        p {
            margin-bottom: 16px;
            font-size: 1.05rem;
            color: #c5d3e0;
        }
        a {
            color: #6dd5ed;
            text-decoration: none;
            transition: color 0.2s, border-bottom 0.2s;
            border-bottom: 1px solid transparent;
        }
        a:hover {
            color: #a8e6ff;
            border-bottom-color: #6dd5ed;
        }
        strong,
        b {
            color: #e8f0f8;
            font-weight: 700;
        }
        em {
            color: #aac4d8;
        }
        ul,
        ol {
            margin: 12px 0 20px 24px;
            color: #c5d3e0;
        }
        li {
            margin-bottom: 8px;
        }
        blockquote {
            border-left: 4px solid #6dd5ed;
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(109, 213, 237, 0.05);
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #b8ccdd;
        }
        blockquote cite {
            display: block;
            margin-top: 8px;
            font-size: 0.9rem;
            color: #7a9aae;
        }
        .highlight-box {
            background: linear-gradient(135deg, rgba(109, 213, 237, 0.08), rgba(33, 147, 176, 0.05));
            border: 1px solid #1f3a4a;
            border-radius: 12px;
            padding: 24px 28px;
            margin: 24px 0;
        }
        .featured-img {
            margin: 32px 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
            background: #141c28;
        }
        .featured-img img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.4s ease;
        }
        .featured-img:hover img {
            transform: scale(1.02);
        }
        .featured-img figcaption {
            padding: 12px 20px;
            font-size: 0.88rem;
            color: #8a9aae;
            background: #0f1620;
            border-top: 1px solid #1a2634;
        }
        .search-section {
            background: #141c28;
            border-radius: 16px;
            padding: 32px 36px;
            margin: 40px 0;
            border: 1px solid #1f2c3c;
        }
        .search-section h3 {
            margin-top: 0;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border-radius: 10px;
            border: 1px solid #2a3a4e;
            background: #0b1018;
            color: #d9e1ec;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .search-form input:focus {
            border-color: #6dd5ed;
            box-shadow: 0 0 0 3px rgba(109, 213, 237, 0.15);
        }
        .search-form input::placeholder {
            color: #5a6a7e;
        }
        .search-form button {
            padding: 14px 32px;
            border-radius: 10px;
            border: none;
            background: linear-gradient(135deg, #2193b0, #6dd5ed);
            color: #0b0e14;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(109, 213, 237, 0.3);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 40px 0;
        }
        .card {
            background: #141c28;
            border-radius: 16px;
            padding: 28px 32px;
            border: 1px solid #1f2c3c;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .card:hover {
            border-color: #2a4a5e;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
        }
        .card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .card h3 i {
            color: #6dd5ed;
        }
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid #2a3a4e;
            background: #0b1018;
            color: #d9e1ec;
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.3s;
            margin-bottom: 12px;
            font-family: inherit;
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .comment-form textarea:focus,
        .comment-form input:focus {
            border-color: #6dd5ed;
        }
        .comment-form button {
            padding: 12px 28px;
            border-radius: 8px;
            border: none;
            background: linear-gradient(135deg, #2193b0, #6dd5ed);
            color: #0b0e14;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .comment-form button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(109, 213, 237, 0.25);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin: 12px 0 16px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #3a4a5c;
            cursor: pointer;
            transition: color 0.2s, transform 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f0c040;
            transform: scale(1.1);
        }
        .star-rating label i {
            transition: color 0.2s;
        }
        .rating-display {
            margin-top: 8px;
            font-size: 0.95rem;
            color: #8a9aae;
        }
        .track-table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.95rem;
        }
        .track-table th {
            text-align: left;
            padding: 12px 16px;
            background: #1a2332;
            color: #b0c8e0;
            font-weight: 700;
            border-bottom: 2px solid #2a3a4e;
        }
        .track-table td {
            padding: 12px 16px;
            border-bottom: 1px solid #1a2634;
            color: #c0d0e0;
        }
        .track-table tr:hover td {
            background: rgba(109, 213, 237, 0.04);
        }
        .track-table .track-num {
            color: #5a8aaa;
            font-weight: 600;
            width: 50px;
        }
        .track-table .track-name {
            font-weight: 500;
        }
        .track-table .track-duration {
            color: #7a8a9e;
            text-align: right;
        }
        footer {
            background: #0a0f18;
            border-top: 2px solid #1a2634;
            padding: 40px 0 28px;
            margin-top: 40px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-col h4 {
            color: #d0dce8;
            margin-bottom: 16px;
            font-size: 1.1rem;
            border-bottom: 1px solid #1a2634;
            padding-bottom: 8px;
        }
        .footer-col p,
        .footer-col a {
            font-size: 0.93rem;
            color: #8a9aae;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            border-bottom: none;
        }
        .footer-col a:hover {
            color: #6dd5ed;
        }
        .footer-col i {
            margin-right: 8px;
            color: #4a6a7e;
        }
        friend-link {
            display: block;
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid #1a2634;
        }
        friend-link a {
            display: inline-block;
            margin-right: 16px;
            padding: 4px 0;
        }
        .copyright {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid #141e2a;
            text-align: center;
            font-size: 0.88rem;
            color: #5a6a7e;
        }
        .copyright i {
            margin: 0 4px;
        }
        @media (max-width: 1024px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 820px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .search-section {
                padding: 24px 20px;
            }
            .card {
                padding: 22px 20px;
            }
        }
        @media (max-width: 680px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #141c28;
                border-radius: 12px;
                padding: 12px;
                margin-top: 12px;
                border: 1px solid #1f2c3c;
                gap: 2px;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li a {
                padding: 12px 16px;
                border-radius: 8px;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo small {
                font-size: 0.6rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .track-table {
                font-size: 0.82rem;
            }
            .track-table th,
            .track-table td {
                padding: 8px 10px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            p {
                font-size: 0.95rem;
            }
            .featured-img figcaption {
                font-size: 0.78rem;
                padding: 10px 14px;
            }
            .star-rating label {
                font-size: 1.6rem;
            }
        }
        .last-updated {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: #7a8a9e;
            background: #141c28;
            padding: 6px 16px;
            border-radius: 20px;
            border: 1px solid #1f2c3c;
            margin-bottom: 20px;
        }
        .last-updated i {
            color: #6dd5ed;
        }
        .divider {
            border: none;
            height: 1px;
            background: linear-gradient(90deg, transparent, #1f2c3c, transparent);
            margin: 32px 0;
        }
        .tag {
            display: inline-block;
            background: rgba(109, 213, 237, 0.1);
            color: #6dd5ed;
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            border: 1px solid rgba(109, 213, 237, 0.15);
        }