*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f4f7fc;
            color: #1a2634;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #004d99;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #cc3300;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #0b1e2f;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 4px solid #004d99;
            padding-bottom: 0.5rem;
            margin-top: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #004d99;
            padding-left: 1rem;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #003366;
            margin-top: 1.8rem;
        }
        h4 {
            font-size: 1.15rem;
            color: #1a3d5c;
            margin-top: 1.2rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1e2f 0%, #1a3d5c 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: 1px;
            color: #ffd700;
            background: rgba(255, 215, 0, 0.12);
            padding: 0.2rem 1rem 0.2rem 0.8rem;
            border-radius: 40px;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: 0.3s;
            text-decoration: none;
        }
        .my-logo:hover {
            background: rgba(255, 215, 0, 0.25);
            color: #ffed8a;
            text-decoration: none;
        }
        .my-logo i {
            font-size: 1.6rem;
            color: #ffd700;
        }
        .my-logo span {
            font-size: 0.9rem;
            font-weight: 400;
            color: #aac7e0;
            margin-left: 0.3rem;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .main-nav {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e0edf7;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: 0.2s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #ffd700;
            text-decoration: none;
        }
        .main-nav a.active {
            background: #ffd700;
            color: #0b1e2f;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #e8eef5;
            padding: 0.5rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d0dce8;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #6a7e94;
        }
        .breadcrumb a {
            color: #004d99;
        }
        .breadcrumb .current {
            color: #3a4e62;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(135deg, #0b1e2f 0%, #1f4b6e 100%);
            color: #fff;
            padding: 2.5rem 0 2rem;
            margin-bottom: 2rem;
            border-radius: 0 0 40px 40px;
        }
        .hero h1 {
            color: #ffd700;
            border: none;
            font-size: 2.6rem;
            margin-top: 0;
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 780px;
            color: #dce9f2;
        }
        .hero .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 1rem;
            font-size: 0.95rem;
            color: #b8d0e0;
        }
        .hero .meta-info i {
            margin-right: 0.4rem;
            color: #ffd700;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-widget {
            background: #fff;
            border-radius: 16px;
            padding: 1.4rem;
            margin-bottom: 1.8rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border: 1px solid #e6edf4;
        }
        .sidebar-widget h3 {
            font-size: 1.1rem;
            margin-top: 0;
            border-bottom: 2px solid #ffd700;
            padding-bottom: 0.4rem;
            color: #0b1e2f;
        }
        .sidebar-widget ul {
            list-style: none;
            padding: 0;
            margin: 0.8rem 0 0;
        }
        .sidebar-widget li {
            margin-bottom: 0.6rem;
        }
        .sidebar-widget li a {
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.3rem 0;
            border-bottom: 1px solid #f0f4f8;
        }
        .sidebar-widget li a i {
            color: #004d99;
            width: 1.2rem;
            font-size: 0.8rem;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
        .card {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8eef5;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
        }
        .card i {
            font-size: 2rem;
            color: #004d99;
            margin-bottom: 0.6rem;
        }
        .card h4 {
            margin-top: 0;
            font-size: 1.1rem;
        }
        .card p {
            font-size: 0.95rem;
            color: #3a4e62;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
            border-radius: 12px;
            border: 1px solid #e0e8f0;
            background: #fff;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 0.8rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e8eef5;
        }
        th {
            background: #0b1e2f;
            color: #ffd700;
            font-weight: 600;
            white-space: nowrap;
        }
        tr:nth-child(even) {
            background: #f8fafc;
        }
        tr:hover td {
            background: #f0f5fa;
        }
        .interaction-section {
            background: #fff;
            border-radius: 20px;
            padding: 2rem;
            margin: 2.5rem 0;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
            border: 1px solid #e6edf4;
        }
        .interaction-section h2 {
            margin-top: 0;
            border-left-color: #ffd700;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #1a2634;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dce4ec;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: 0.2s;
            background: #f9fbfd;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: #004d99;
            outline: none;
            background: #fff;
        }
        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #004d99;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .btn:hover {
            background: #003366;
            transform: scale(1.02);
        }
        .btn-secondary {
            background: #ffd700;
            color: #0b1e2f;
        }
        .btn-secondary:hover {
            background: #e6c200;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.3rem;
            margin: 0.5rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #d0d8e0;
            cursor: pointer;
            transition: 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #ffd700;
        }
        .feature-image {
            margin: 2rem 0;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            background: #e8eef5;
            text-align: center;
        }
        .feature-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .feature-image .caption {
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            color: #4a5e72;
            background: #f8fafc;
            font-style: italic;
        }
        .site-footer {
            background: #0b1e2f;
            color: #bfd4e5;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
            border-top: 4px solid #ffd700;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
        }
        .site-footer h4 {
            color: #ffd700;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .site-footer a {
            color: #bfd4e5;
        }
        .site-footer a:hover {
            color: #ffd700;
        }
        .site-footer .copyright {
            margin-top: 2rem;
            padding-top: 1.2rem;
            border-top: 1px solid #1f3d55;
            text-align: center;
            font-size: 0.85rem;
            color: #8aa3b8;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.6rem 0.2rem 0;
            padding: 0.2rem 0.8rem;
            background: rgba(255, 215, 0, 0.08);
            border-radius: 20px;
            font-size: 0.85rem;
            border: 1px solid rgba(255, 215, 0, 0.15);
        }
        friend-link a:hover {
            background: rgba(255, 215, 0, 0.18);
            text-decoration: none;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .main-content {
                order: 1;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .hero h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0b1e2f;
                padding: 0.8rem 0;
                border-radius: 0 0 16px 16px;
                margin-top: 0.6rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.6rem 1.2rem;
                border-radius: 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .header-inner {
                align-items: center;
            }
            .nav-wrapper {
                width: auto;
            }
            .my-logo {
                font-size: 1.4rem;
                padding: 0.1rem 0.8rem 0.1rem 0.6rem;
            }
            .my-logo span {
                display: none;
            }
            .hero {
                padding: 1.5rem 0 1rem;
                border-radius: 0 0 24px 24px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .interaction-section {
                padding: 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            h1 {
                font-size: 1.5rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .hero .meta-info {
                flex-direction: column;
                gap: 0.3rem;
            }
        }
        .text-highlight {
            background: linear-gradient(to right, #ffd70044, #ffd70022);
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .badge {
            display: inline-block;
            background: #004d99;
            color: #fff;
            font-size: 0.7rem;
            padding: 0.15rem 0.7rem;
            border-radius: 20px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }
        .badge-gold {
            background: #ffd700;
            color: #0b1e2f;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            align-items: center;
        }
        .gap-1 {
            gap: 1rem;
        }