*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f8faff;
            color: #1e2a3a;
            line-height: 1.7;
        }
        a {
            color: #0a4b7a;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #e67e22;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        .container {
            max-width: 1160px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0a2a44 0%, #1a4a6e 100%);
            padding: 16px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #f1c40f;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #f1c40f;
        }
        .my-logo span {
            font-weight: 300;
            font-size: 0.9rem;
            color: #b0d4f0;
            display: block;
            font-size: 0.7rem;
            letter-spacing: 2px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            color: #e8f0fe;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.3s;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #f1c40f;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 6px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            background: none;
            border: none;
            padding: 8px;
        }
        .hamburger span {
            width: 28px;
            height: 3px;
            background: #fff;
            border-radius: 4px;
            margin: 4px 0;
            transition: all 0.3s;
        }
        .breadcrumb-wrap {
            background: #ecf3fa;
            padding: 10px 0;
            border-bottom: 1px solid #dce6f0;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 0.85rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 10px;
            color: #7f8c8d;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #2c6b9e;
        }
        .breadcrumb .current {
            color: #1a2a3a;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(135deg, #e8f4fd 0%, #d4e9f7 100%);
            padding: 48px 0 40px;
            text-align: center;
            border-bottom: 4px solid #1a4a6e;
        }
        .hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0a2a44;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .hero h1 i {
            color: #e67e22;
        }
        .hero p {
            font-size: 1.2rem;
            color: #2c4a6a;
            max-width: 720px;
            margin: 0 auto 20px;
        }
        .hero-meta {
            font-size: 0.9rem;
            color: #5a7a9a;
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        .hero-meta i {
            margin-right: 6px;
        }
        .search-section {
            background: #fff;
            padding: 20px 0;
            border-bottom: 1px solid #e0eaf5;
        }
        .search-form {
            display: flex;
            max-width: 560px;
            margin: 0 auto;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #cbdae8;
        }
        .search-form input {
            flex: 1;
            padding: 14px 22px;
            border: none;
            font-size: 1rem;
            outline: none;
            background: #fff;
        }
        .search-form button {
            background: #1a4a6e;
            color: #fff;
            border: none;
            padding: 14px 28px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: #0a2a44;
        }
        .main-content {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .content-article {
            background: #fff;
            border-radius: 20px;
            padding: 36px 40px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
        }
        .content-article h2 {
            font-size: 2rem;
            color: #0a2a44;
            margin: 40px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #e67e22;
        }
        .content-article h2:first-of-type {
            margin-top: 0;
        }
        .content-article h3 {
            font-size: 1.4rem;
            color: #1a4a6e;
            margin: 32px 0 12px;
        }
        .content-article h4 {
            font-size: 1.15rem;
            color: #2c5a7a;
            margin: 24px 0 10px;
            font-weight: 600;
        }
        .content-article p {
            margin-bottom: 18px;
            font-size: 1.05rem;
        }
        .content-article ul,
        .content-article ol {
            margin-bottom: 20px;
        }
        .content-article li {
            margin-bottom: 8px;
        }
        .content-article .feature-box {
            background: #f0f7fe;
            border-left: 5px solid #e67e22;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .content-article .feature-box i {
            color: #e67e22;
            margin-right: 8px;
        }
        .content-article .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
        }
        .content-article table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.98rem;
        }
        .content-article th,
        .content-article td {
            padding: 12px 16px;
            border: 1px solid #dce6f0;
            text-align: left;
        }
        .content-article th {
            background: #1a4a6e;
            color: #fff;
            font-weight: 600;
        }
        .content-article tr:nth-child(even) {
            background: #f6faff;
        }
        .content-article .img-wrapper {
            margin: 32px 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .content-article .img-wrapper img {
            width: 100%;
            height: auto;
            display: block;
        }
        .content-article .img-caption {
            background: #f0f7fe;
            padding: 12px 20px;
            font-size: 0.9rem;
            color: #3a5a7a;
            text-align: center;
        }
        .content-article .highlight {
            background: #fff9e6;
            padding: 2px 8px;
            border-radius: 6px;
            font-weight: 600;
        }
        .content-article .inline-link {
            font-weight: 600;
            color: #0a4b7a;
            border-bottom: 1px dotted #e67e22;
        }
        .content-article .inline-link:hover {
            color: #e67e22;
            border-bottom-style: solid;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8f0fa;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            color: #0a2a44;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card h3 i {
            color: #e67e22;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid #ecf3fa;
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #2c5a7a;
            font-weight: 500;
        }
        .sidebar-card ul li a:hover {
            color: #e67e22;
            text-decoration: none;
        }
        .sidebar-card ul li a i {
            color: #1a4a6e;
            font-size: 0.8rem;
        }
        .rating-area {
            margin: 40px 0 20px;
            padding: 28px 32px;
            background: #f4f9ff;
            border-radius: 16px;
            border: 1px solid #dce6f0;
        }
        .rating-area h3 {
            font-size: 1.4rem;
            color: #0a2a44;
            margin-bottom: 16px;
        }
        .stars {
            display: flex;
            gap: 8px;
            font-size: 2rem;
            cursor: pointer;
            margin: 12px 0 16px;
        }
        .stars i {
            color: #d0d8e0;
            transition: color 0.2s, transform 0.15s;
        }
        .stars i:hover,
        .stars i.active {
            color: #f1c40f;
            transform: scale(1.1);
        }
        .rating-area form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 8px;
        }
        .rating-area form input,
        .rating-area form textarea {
            padding: 12px 16px;
            border: 1px solid #cbdae8;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            outline: none;
            transition: border 0.3s;
        }
        .rating-area form input:focus,
        .rating-area form textarea:focus {
            border-color: #1a4a6e;
        }
        .rating-area form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .rating-area form button {
            background: #1a4a6e;
            color: #fff;
            border: none;
            padding: 14px 28px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
            align-self: flex-start;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .rating-area form button:hover {
            background: #0a2a44;
        }
        .rating-area .score-submit {
            background: #e67e22;
        }
        .rating-area .score-submit:hover {
            background: #c96a1a;
        }
        .comments-area {
            margin: 32px 0;
        }
        .comments-area h3 {
            font-size: 1.4rem;
            color: #0a2a44;
            margin-bottom: 20px;
        }
        .comment-item {
            padding: 16px 20px;
            background: #f8fcff;
            border-radius: 12px;
            margin-bottom: 12px;
            border: 1px solid #e8f0fa;
        }
        .comment-item .comment-author {
            font-weight: 700;
            color: #0a2a44;
        }
        .comment-item .comment-date {
            font-size: 0.8rem;
            color: #7f8c8d;
            margin-left: 12px;
        }
        .comment-item .comment-text {
            margin-top: 6px;
        }
        .site-footer {
            background: #0a2a44;
            color: #d0e0f0;
            padding: 40px 0 20px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 24px;
        }
        .footer-col h4 {
            color: #f1c40f;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        .footer-col p,
        .footer-col a {
            color: #b0c8e0;
            font-size: 0.95rem;
        }
        .footer-col a:hover {
            color: #f1c40f;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            padding: 4px 0;
        }
        .friend-link {
            display: block;
            margin: 12px 0;
        }
        .friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 14px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 30px;
            font-size: 0.9rem;
            color: #b0c8e0;
            transition: all 0.3s;
        }
        .friend-link a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #f1c40f;
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.9rem;
            color: #8aaac8;
        }
        .footer-bottom a {
            color: #f1c40f;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #0a2a44;
                padding: 16px 0;
                margin-top: 12px;
                border-radius: 16px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 20px;
                border-radius: 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .hamburger {
                display: flex;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .content-article {
                padding: 20px 16px;
            }
            .content-article h2 {
                font-size: 1.5rem;
            }
            .content-article h3 {
                font-size: 1.2rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .rating-area {
                padding: 20px 16px;
            }
            .stars {
                font-size: 1.6rem;
            }
            .search-form {
                flex-direction: column;
                border-radius: 20px;
            }
            .search-form input {
                border-radius: 20px 20px 0 0;
            }
            .search-form button {
                border-radius: 0 0 20px 20px;
            }
            .hero-meta {
                flex-direction: column;
                gap: 6px;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.4rem;
            }
            .hero h1 {
                font-size: 1.5rem;
            }
            .content-article {
                padding: 16px 12px;
            }
            .content-article p {
                font-size: 0.96rem;
            }
            .container {
                padding: 0 12px;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #1a4a6e;
            color: #fff;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            transition: all 0.3s;
            border: none;
            z-index: 99;
            opacity: 0;
            visibility: hidden;
        }
        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .scroll-top:hover {
            background: #e67e22;
            transform: translateY(-4px);
        }
        @media print {
            .site-header,
            .search-section,
            .scroll-top,
            .breadcrumb-wrap,
            .rating-area form,
            .hamburger {
                display: none !important;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                break-inside: avoid;
            }
            .site-footer {
                break-inside: avoid;
            }
        }