*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            background: #f4f7fc;
            color: #1a2634;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #c0392b;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #96281b;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        hr {
            border: none;
            height: 2px;
            background: linear-gradient(to right, #c0392b, #f39c12, #c0392b);
            margin: 2.5rem 0;
            opacity: 0.3;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(145deg, #0b1a2e, #1a2f44);
            color: #fff;
            padding: 0.8rem 0;
            border-bottom: 4px solid #c0392b;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f39c12, #e74c3c);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #f39c12;
            font-size: 2rem;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.2rem;
        }
        .main-nav a {
            color: #e0e8f0;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f39c12;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 0.3rem;
        }
        .breadcrumb {
            background: #eaeef3;
            padding: 0.7rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #dce3ea;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #7f8c8d;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #2c3e50;
        }
        .breadcrumb a:hover {
            color: #c0392b;
        }
        .breadcrumb .current {
            color: #7f8c8d;
            font-weight: 500;
        }
        .main-content {
            padding: 2.5rem 0;
        }
        .page-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #0b1a2e;
            margin-bottom: 0.8rem;
            line-height: 1.2;
            border-left: 6px solid #c0392b;
            padding-left: 1.2rem;
        }
        .page-title i {
            color: #f39c12;
            margin-right: 0.4rem;
        }
        .page-meta {
            color: #5d6d7e;
            font-size: 0.95rem;
            margin-bottom: 2rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
        }
        .page-meta span {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .page-meta i {
            color: #c0392b;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #0b1a2e;
            margin: 2.2rem 0 1rem 0;
            padding-bottom: 0.4rem;
            border-bottom: 3px solid #f39c12;
            display: inline-block;
        }
        h3 {
            font-size: 1.45rem;
            font-weight: 600;
            color: #1a2f44;
            margin: 1.8rem 0 0.8rem 0;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #2c3e50;
            margin: 1.4rem 0 0.5rem 0;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .card {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #e8edf2;
            transition: transform 0.25s ease, box-shadow 0.3s ease;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
        }
        .card i {
            font-size: 2.2rem;
            color: #c0392b;
            margin-bottom: 0.8rem;
        }
        .card h4 {
            margin-top: 0;
            font-size: 1.2rem;
        }
        .card p {
            font-size: 0.95rem;
            color: #4a5a6a;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fef9e7, #fdebd0);
            border-left: 6px solid #f39c12;
            padding: 1.5rem 2rem;
            border-radius: 12px;
            margin: 1.8rem 0;
        }
        .highlight-box strong {
            color: #c0392b;
        }
        .tip-box {
            background: #eaf2f8;
            border-left: 6px solid #2980b9;
            padding: 1.2rem 1.8rem;
            border-radius: 12px;
            margin: 1.5rem 0;
        }
        .tip-box i {
            color: #2980b9;
            margin-right: 0.5rem;
        }
        .content-image {
            margin: 2rem 0;
            border-radius: 16px;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
        }
        .content-image figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: #5d6d7e;
            margin-top: 0.6rem;
            font-style: italic;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.8rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
        }
        th,
        td {
            padding: 0.9rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid #e8edf2;
        }
        th {
            background: #0b1a2e;
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f8f9fa;
        }
        .form-section {
            background: #fff;
            border-radius: 20px;
            padding: 2rem;
            margin: 2.5rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8edf2;
        }
        .form-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            font-size: 0.95rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #dce3ea;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border-color 0.2s;
            background: #fafcfe;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: #c0392b;
            outline: none;
            background: #fff;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: #c0392b;
            color: #fff;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            background: #96281b;
            transform: scale(1.02);
            box-shadow: 0 6px 20px rgba(192, 57, 43, 0.35);
        }
        .btn-secondary {
            background: #2c3e50;
        }
        .btn-secondary:hover {
            background: #1a2f44;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 0.3rem;
            font-size: 2rem;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #dce3ea;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f39c12;
        }
        .comment-item {
            background: #f8f9fa;
            border-radius: 12px;
            padding: 1.2rem 1.5rem;
            margin-bottom: 1rem;
            border-left: 4px solid #c0392b;
        }
        .comment-item .author {
            font-weight: 700;
            color: #0b1a2e;
        }
        .comment-item .date {
            font-size: 0.8rem;
            color: #7f8c8d;
            margin-left: 1rem;
        }
        .comment-item .text {
            margin-top: 0.4rem;
            color: #2c3e50;
        }
        .related-links {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin: 2rem 0;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8edf2;
        }
        .related-links h3 {
            margin-top: 0;
        }
        .related-links ul {
            columns: 2 240px;
            list-style: none;
            padding: 0;
        }
        .related-links li {
            padding: 0.3rem 0;
        }
        .related-links a {
            color: #2c3e50;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .related-links a:hover {
            color: #c0392b;
        }
        .related-links a i {
            color: #f39c12;
            font-size: 0.8rem;
        }
        friend-link {
            display: block;
            background: #0b1a2e;
            color: #e0e8f0;
            padding: 2rem 0;
            margin-top: 2rem;
            border-top: 4px solid #c0392b;
        }
        friend-link .container {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem 2.5rem;
            justify-content: center;
        }
        friend-link a {
            color: #f39c12;
            font-weight: 500;
            transition: color 0.2s;
        }
        friend-link a:hover {
            color: #fff;
            text-decoration: underline;
        }
        friend-link .label {
            font-weight: 700;
            color: #fff;
            margin-right: 0.5rem;
            font-size: 1.1rem;
        }
        .site-footer {
            background: #06121e;
            color: #b0c4d8;
            padding: 2rem 0;
            text-align: center;
            font-size: 0.9rem;
        }
        .site-footer a {
            color: #f39c12;
        }
        .site-footer a:hover {
            color: #fff;
        }
        .site-footer .copyright {
            margin-top: 1rem;
            border-top: 1px solid #1a2f44;
            padding-top: 1.2rem;
            color: #7f8c8d;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0b1a2e;
                padding: 0.8rem 0;
                border-radius: 12px;
                margin-top: 0.5rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.7rem 1.2rem;
                border-bottom: 1px solid #1a2f44;
            }
            .main-nav a:last-child {
                border-bottom: none;
            }
            .page-title {
                font-size: 1.8rem;
                padding-left: 0.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .related-links ul {
                columns: 1;
            }
            .form-section {
                padding: 1.2rem;
            }
            .page-meta {
                flex-direction: column;
                gap: 0.4rem;
            }
            .breadcrumb ol {
                font-size: 0.75rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            .page-title {
                font-size: 1.4rem;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .star-rating {
                font-size: 1.6rem;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        .gap-1 {
            gap: 1rem;
        }
        .badge {
            display: inline-block;
            background: #c0392b;
            color: #fff;
            font-size: 0.75rem;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            font-weight: 600;
        }
        .badge-gold {
            background: #f39c12;
        }
        .badge-blue {
            background: #2980b9;
        }