*,
        *::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: #f4f7fb;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #0d6efd;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus {
            color: #0a4fa8;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: #0b1a2e;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.2rem;
            border-left: 6px solid #f5a623;
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.9rem;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1a2e 0%, #1a2f3f 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 999;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.20);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f5a623, #f7c948);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 8px rgba(245, 166, 35, 0.25);
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
            -webkit-text-fill-color: transparent;
        }
        .my-logo a:hover {
            opacity: 0.85;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .main-nav {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            color: #e2e8f0;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background: rgba(245, 166, 35, 0.18);
            color: #f5a623;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 6px;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 0.7rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dce2ea;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #6c7a8a;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #0d6efd;
        }
        .breadcrumb .current {
            color: #4a5568;
            font-weight: 600;
        }
        .hero-banner {
            background: linear-gradient(145deg, #0f2636, #1a3a4e);
            color: #fff;
            padding: 2.8rem 0 2.4rem;
            margin-bottom: 2rem;
            border-radius: 0 0 40px 40px;
        }
        .hero-banner .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 2rem;
        }
        .hero-text {
            flex: 1 1 55%;
        }
        .hero-text h1 {
            color: #fff;
            border-left-color: #f5a623;
            font-size: 2.6rem;
            margin-top: 0;
        }
        .hero-text p {
            font-size: 1.15rem;
            opacity: 0.9;
            max-width: 620px;
        }
        .hero-img {
            flex: 1 1 38%;
            border-radius: 16px;
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
        }
        .hero-img img {
            border-radius: 16px;
            width: 100%;
            min-height: 200px;
            object-fit: cover;
            background: #2a4a5e;
        }
        .update-badge {
            display: inline-block;
            background: #f5a623;
            color: #0b1a2e;
            padding: 0.25rem 1rem;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.85rem;
            margin-top: 0.6rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0 3rem;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            margin-bottom: 1.8rem;
            border: 1px solid #e8edf2;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #f0f2f5;
            padding-bottom: 0.5rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f2f5;
        }
        .sidebar-card li:last-child {
            border-bottom: none;
        }
        .sidebar-card a {
            font-weight: 500;
        }
        .section-card {
            background: #fff;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
            margin-bottom: 2.2rem;
            border: 1px solid #eef2f6;
            transition: box-shadow 0.3s ease;
        }
        .section-card:hover {
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.07);
        }
        .section-card h2 {
            margin-top: 0.2rem;
        }
        .highlight-box {
            background: #fef9ed;
            border-left: 6px solid #f5a623;
            padding: 1.2rem 1.6rem;
            border-radius: 12px;
            margin: 1.6rem 0;
        }
        .highlight-box strong {
            color: #b1740e;
        }
        .tip-icon {
            color: #f5a623;
            margin-right: 6px;
        }
        .emoji-lg {
            font-size: 1.4rem;
            line-height: 1;
        }
        .btn {
            display: inline-block;
            background: #0d6efd;
            color: #fff;
            padding: 0.55rem 1.5rem;
            border-radius: 30px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            font-size: 0.95rem;
        }
        .btn:hover {
            background: #0a4fa8;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(13, 110, 253, 0.25);
            text-decoration: none;
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid #0d6efd;
            color: #0d6efd;
        }
        .btn-outline:hover {
            background: #0d6efd;
            color: #fff;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            font-weight: 600;
            display: block;
            margin-bottom: 0.3rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dce2ea;
            border-radius: 10px;
            font-size: 1rem;
            transition: border 0.25s ease;
            background: #fafcfe;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: #0d6efd;
            outline: none;
            box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.08);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating i {
            transition: color 0.2s ease;
        }
        .star-rating i.active,
        .star-rating i:hover,
        .star-rating i:hover~i {
            color: #f5a623;
        }
        .star-rating input[type="radio"] {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #ccc;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5a623;
        }
        .comment-item {
            background: #f8fafc;
            border-radius: 12px;
            padding: 1rem 1.4rem;
            margin-bottom: 1rem;
            border-left: 4px solid #dce2ea;
        }
        .comment-item .author {
            font-weight: 700;
            color: #0b1a2e;
        }
        .comment-item .date {
            font-size: 0.82rem;
            color: #6c7a8a;
        }
        .comment-item .rating-stars {
            color: #f5a623;
        }
        .site-footer {
            background: #0b1a2e;
            color: #cbd5e0;
            padding: 2.5rem 0 0;
            margin-top: 3rem;
            border-radius: 40px 40px 0 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            padding-bottom: 2rem;
        }
        .footer-inner h4 {
            color: #f5a623;
            margin-top: 0;
        }
        .footer-inner a {
            color: #a0b8cc;
        }
        .footer-inner a:hover {
            color: #f5a623;
        }
        friend-link {
            display: block;
            background: #112a3a;
            border-radius: 14px;
            padding: 1.2rem 1.8rem;
            margin: 1.5rem 0;
            border: 1px solid #1f3f52;
        }
        friend-link h3 {
            color: #f5a623;
            font-size: 1.2rem;
            margin: 0 0 0.6rem 0;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.4rem;
        }
        friend-link li a {
            color: #b8d0e0;
            font-weight: 500;
        }
        friend-link li a:hover {
            color: #f5a623;
        }
        .copyright {
            background: #071521;
            text-align: center;
            padding: 1.2rem 0;
            font-size: 0.9rem;
            color: #7a93aa;
            border-top: 1px solid #1a3040;
            margin-top: 1.5rem;
        }
        .copyright a {
            color: #a0b8cc;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .hero-text h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0f2636;
                padding: 1rem 0.5rem;
                border-radius: 16px;
                margin-top: 0.8rem;
                gap: 0.2rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.6rem 1rem;
                border-radius: 10px;
            }
            .header-inner {
                align-items: center;
            }
            .hero-banner .container {
                flex-direction: column-reverse;
            }
            .hero-text h1 {
                font-size: 1.8rem;
            }
            .section-card {
                padding: 1.2rem 1.2rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            .hero-text h1 {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .breadcrumb ol {
                font-size: 0.78rem;
            }
            .star-rating {
                font-size: 1.4rem;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #f5a623;
            color: #0b1a2e;
            border: none;
            border-radius: 50%;
            width: 48px;
            height: 48px;
            font-size: 1.4rem;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
            transition: all 0.3s ease;
            z-index: 100;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .scroll-top:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            background: #f7c948;
        }
        .text-muted {
            color: #6c7a8a;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .gap-1 {
            gap: 1rem;
        }
        .table-wrap {
            overflow-x: auto;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2rem 0;
        }
        table th,
        table td {
            padding: 0.7rem 1rem;
            border: 1px solid #e2e8f0;
            text-align: left;
        }
        table th {
            background: #eef2f6;
            font-weight: 700;
        }
        table tr:nth-child(even) {
            background: #f8fafc;
        }
        .tag {
            display: inline-block;
            background: #eef2f6;
            padding: 0.2rem 0.8rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #2d3f53;
        }
        .tag.gold {
            background: #fef3d0;
            color: #9b6f0b;
        }