*,
        *::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, 'Helvetica Neue', Arial, sans-serif;
            background: #f4f7fb;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #0056b3;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #ff6b35;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            margin-top: 1.2em;
            margin-bottom: 0.6em;
            color: #0b1a2b;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 4px solid #ff6b35;
            padding-bottom: 0.3em;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #ff6b35;
            padding-left: 0.7em;
        }
        h3 {
            font-size: 1.4rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.15rem;
            color: #2a4a6a;
        }
        p {
            margin-bottom: 1.2em;
        }
        ul,
        ol {
            margin: 0.8em 0 1.2em 2em;
        }
        li {
            margin-bottom: 0.4em;
        }
        strong {
            color: #0b1a2b;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1a2b 0%, #1e3a5f 100%);
            color: #fff;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 12px 20px;
            max-width: 1120px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(to right, #ff6b35, #f7931e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none !important;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            -webkit-text-fill-color: #ff6b35;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none !important;
        }
        .my-logo span {
            font-size: 0.75rem;
            display: block;
            font-weight: 400;
            letter-spacing: 1px;
            -webkit-text-fill-color: rgba(255, 255, 255, 0.6);
            color: rgba(255, 255, 255, 0.6);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .primary-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .primary-nav a {
            color: #e0e9f5;
            font-size: 0.92rem;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 30px;
            transition: all 0.25s;
            text-decoration: none !important;
            white-space: nowrap;
        }
        .primary-nav a:hover {
            background: rgba(255, 107, 53, 0.2);
            color: #ff6b35;
        }
        .primary-nav a.active {
            background: #ff6b35;
            color: #fff;
        }
        .breadcrumb {
            background: #e8edf4;
            padding: 10px 20px;
            font-size: 0.85rem;
            border-bottom: 1px solid #d0d9e6;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            margin: 0;
            padding: 0;
            max-width: 1120px;
            margin: 0 auto;
        }
        .breadcrumb li {
            margin: 0;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #7a8a9e;
            font-size: 1.2rem;
            margin-right: 4px;
        }
        .breadcrumb a {
            color: #0056b3;
        }
        .breadcrumb .current {
            color: #4a5a6e;
            font-weight: 600;
        }
        .hero-wrap {
            background: linear-gradient(135deg, #0b1a2b 0%, #1e3a5f 100%);
            padding: 40px 20px 30px;
            color: #fff;
            text-align: center;
        }
        .hero-wrap .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }
        .hero-wrap h1 {
            color: #fff;
            border-bottom-color: #ff6b35;
            font-size: 2.6rem;
            max-width: 800px;
            margin: 0 auto 0.3em;
        }
        .hero-wrap .subhead {
            font-size: 1.1rem;
            color: #c0d0e0;
            max-width: 650px;
        }
        .hero-img {
            border-radius: 16px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
            max-width: 100%;
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            margin: 10px 0;
        }
        .content-wrap {
            background: #fff;
            padding: 40px 20px 50px;
        }
        .content-grid {
            max-width: 1120px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .main-article {
            min-width: 0;
        }
        .sidebar {
            font-size: 0.95rem;
        }
        .sidebar .card {
            background: #f4f7fb;
            border-radius: 16px;
            padding: 24px 20px;
            margin-bottom: 28px;
            border: 1px solid #e0e8f0;
        }
        .sidebar .card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #ff6b35;
            padding-bottom: 8px;
        }
        .sidebar .card ul {
            list-style: none;
            margin: 12px 0 0;
            padding: 0;
        }
        .sidebar .card li {
            padding: 6px 0;
            border-bottom: 1px solid #e0e8f0;
        }
        .sidebar .card li:last-child {
            border-bottom: none;
        }
        .sidebar .card a {
            font-weight: 500;
        }
        .search-box {
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            border: 2px solid #d0d9e6;
            background: #fff;
            transition: border-color 0.3s;
            max-width: 500px;
            margin: 20px 0;
        }
        .search-box:focus-within {
            border-color: #ff6b35;
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 14px 20px;
            font-size: 1rem;
            outline: none;
            background: transparent;
            color: #1e2a3a;
        }
        .search-box button {
            background: #ff6b35;
            border: none;
            color: #fff;
            padding: 0 24px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.25s;
        }
        .search-box button:hover {
            background: #e55a2b;
        }
        .feedback-section {
            background: #f4f7fb;
            border-radius: 20px;
            padding: 30px 28px;
            margin: 40px 0 30px;
            border: 1px solid #e0e8f0;
        }
        .feedback-section h3 {
            margin-top: 0;
        }
        .comment-form,
        .score-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin: 18px 0;
        }
        .comment-form textarea,
        .score-form select,
        .score-form input[type="text"] {
            padding: 12px 16px;
            border: 2px solid #d0d9e6;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            background: #fff;
            transition: border-color 0.25s;
            width: 100%;
        }
        .comment-form textarea:focus,
        .score-form select:focus,
        .score-form input:focus {
            border-color: #ff6b35;
            outline: none;
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #ff6b35;
            color: #fff;
            border: none;
            padding: 12px 30px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s;
            width: fit-content;
            text-decoration: none !important;
        }
        .btn:hover {
            background: #e55a2b;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.3);
        }
        .btn-secondary {
            background: #1e3a5f;
        }
        .btn-secondary:hover {
            background: #0b1a2b;
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #ffb83d;
            cursor: pointer;
        }
        .rating-stars i {
            transition: transform 0.15s, color 0.2s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
            color: #ff8c00;
        }
        friend-link {
            display: block;
            padding: 30px 20px 20px;
            background: #e8edf4;
            border-top: 3px solid #ff6b35;
        }
        friend-link .container {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            justify-content: center;
        }
        friend-link a {
            color: #1e3a5f;
            font-weight: 500;
            padding: 6px 16px;
            background: #fff;
            border-radius: 30px;
            border: 1px solid #d0d9e6;
            transition: all 0.2s;
            text-decoration: none !important;
            font-size: 0.92rem;
        }
        friend-link a:hover {
            background: #ff6b35;
            color: #fff;
            border-color: #ff6b35;
        }
        .site-footer {
            background: #0b1a2b;
            color: #b0c0d0;
            padding: 30px 20px;
            text-align: center;
            font-size: 0.9rem;
        }
        .site-footer .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }
        .site-footer a {
            color: #ffb083;
        }
        .site-footer a:hover {
            color: #ff6b35;
        }
        .footer-copy {
            border-top: 1px solid #1e3a5f;
            padding-top: 18px;
            margin-top: 12px;
            width: 100%;
            font-size: 0.82rem;
            color: #8090a0;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .primary-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 12px 0 8px;
                gap: 4px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 10px;
            }
            .primary-nav.open {
                display: flex;
            }
            .primary-nav a {
                width: 100%;
                text-align: center;
                padding: 10px 14px;
            }
            .header-inner {
                padding: 10px 16px;
            }
            .content-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hero-wrap h1 {
                font-size: 1.8rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .sidebar {
                order: 2;
            }
            .hero-wrap {
                padding: 24px 16px 20px;
            }
            .feedback-section {
                padding: 20px 16px;
            }
            .search-box {
                max-width: 100%;
            }
            .rating-stars {
                font-size: 1.4rem;
            }
            friend-link .container {
                gap: 8px 16px;
            }
            friend-link a {
                font-size: 0.82rem;
                padding: 4px 12px;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo span {
                font-size: 0.6rem;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 8px 12px;
            }
            .container {
                padding: 0 12px;
            }
        }
        .card,
        .feedback-section,
        .hero-img {
            transition: all 0.2s ease;
        }
        .card:hover {
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.06);
        }
        .price-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 0.95rem;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .price-table th {
            background: #0b1a2b;
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .price-table td {
            padding: 10px 16px;
            border-bottom: 1px solid #e0e8f0;
        }
        .price-table tr:last-child td {
            border-bottom: none;
        }
        .price-table tr:hover td {
            background: #f4f7fb;
        }
        .highlight {
            background: linear-gradient(to right, #fff3e0, #ffe8d0);
            padding: 0.2em 0.6em;
            border-radius: 6px;
            font-weight: 600;
        }
        .updated {
            font-size: 0.85rem;
            color: #6a7a8e;
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 1.2em;
        }
        .updated i {
            color: #ff6b35;
        }
        .toc {
            background: #f4f7fb;
            border-radius: 16px;
            padding: 20px 24px;
            margin: 24px 0 32px;
            border: 1px solid #e0e8f0;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ul {
            column-count: 2;
            column-gap: 30px;
            list-style: none;
            margin: 12px 0 0;
            padding: 0;
        }
        .toc li {
            break-inside: avoid;
            padding: 4px 0;
        }
        .toc a {
            font-weight: 500;
        }
        @media (max-width: 600px) {
            .toc ul {
                column-count: 1;
            }
        }