* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f8f9fc;
            color: #1e2a3a;
            line-height: 1.8;
            font-size: 16px;
            scroll-behavior: smooth;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(145deg, #0b1a2e, #1a2f44);
            padding: 18px 0;
            border-bottom: 4px solid #f5c842;
            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;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #f5c842;
            text-decoration: none;
            letter-spacing: 1px;
            text-shadow: 0 2px 8px rgba(245, 200, 66, 0.3);
            transition: 0.3s;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: #ffd966;
            transform: scale(1.02);
        }
        .my-logo i {
            font-size: 2rem;
            color: #ffb347;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 2rem;
            color: #f5c842;
            cursor: pointer;
            padding: 4px 10px;
            transition: 0.3s;
        }
        .hamburger:hover {
            color: #ffd966;
        }
        .main-nav {
            display: flex;
            gap: 28px;
            align-items: center;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e6edf5;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: 0.3s;
            letter-spacing: 0.3px;
        }
        .main-nav a:hover {
            border-bottom-color: #f5c842;
            color: #f5c842;
        }
        .breadcrumb {
            background: #eef2f7;
            padding: 12px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dce3ec;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
            color: #2c3e50;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #8899aa;
            font-weight: 700;
            margin-right: 8px;
        }
        .breadcrumb a {
            color: #1a4b7a;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #6b7f94;
            font-weight: 600;
        }
        main {
            padding: 40px 0 60px;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0b1a2e;
            margin-bottom: 12px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        h1 i {
            color: #f5c842;
        }
        .last-updated {
            display: inline-block;
            background: #eef2f7;
            padding: 4px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #4a5f73;
            margin-bottom: 28px;
            border: 1px solid #dce3ec;
        }
        .last-updated i {
            margin-right: 6px;
            color: #f5c842;
        }
        .hero-image {
            width: 100%;
            border-radius: 20px;
            margin: 20px 0 32px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
            transition: 0.4s;
            border: 1px solid #e6edf5;
        }
        .hero-image:hover {
            transform: scale(1.005);
            box-shadow: 0 16px 50px rgba(0, 0, 0, 0.18);
        }
        .toc-wrap {
            background: #ffffff;
            border-radius: 16px;
            padding: 28px 32px;
            margin: 32px 0 40px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border-left: 6px solid #f5c842;
        }
        .toc-wrap h2 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: #0b1a2e;
        }
        .toc-wrap ul {
            list-style: none;
            columns: 2;
            column-gap: 40px;
        }
        .toc-wrap li {
            margin-bottom: 8px;
            break-inside: avoid;
        }
        .toc-wrap a {
            color: #1a4b7a;
            text-decoration: none;
            font-weight: 500;
            padding: 4px 0;
            display: inline-block;
            border-bottom: 1px solid transparent;
            transition: 0.2s;
        }
        .toc-wrap a:hover {
            border-bottom-color: #f5c842;
            color: #0b1a2e;
        }
        .content {
            background: #ffffff;
            border-radius: 20px;
            padding: 40px 44px;
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.04);
            margin-bottom: 40px;
        }
        .content h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #0b1a2e;
            margin: 48px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #f5c842;
            display: inline-block;
        }
        .content h2 i {
            color: #f5c842;
            margin-right: 12px;
        }
        .content h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1a2f44;
            margin: 36px 0 12px;
        }
        .content h3 i {
            color: #ffb347;
            margin-right: 10px;
        }
        .content h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2c3e50;
            margin: 24px 0 10px;
        }
        .content p {
            margin-bottom: 18px;
            color: #2c3e50;
        }
        .content strong {
            color: #0b1a2e;
            font-weight: 700;
        }
        .content ul,
        .content ol {
            margin: 12px 0 22px 24px;
            color: #2c3e50;
        }
        .content li {
            margin-bottom: 8px;
        }
        .content .highlight-box {
            background: #f0f5fe;
            border-left: 6px solid #f5c842;
            padding: 20px 28px;
            border-radius: 12px;
            margin: 28px 0;
        }
        .content .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .content .tip-box {
            background: #fef9e7;
            border-left: 6px solid #ffb347;
            padding: 20px 28px;
            border-radius: 12px;
            margin: 28px 0;
        }
        .content .stat-table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0 32px;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .content .stat-table thead {
            background: #0b1a2e;
            color: #f5c842;
        }
        .content .stat-table th {
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
        }
        .content .stat-table td {
            padding: 12px 18px;
            border-bottom: 1px solid #e6edf5;
        }
        .content .stat-table tbody tr:hover {
            background: #f8fafc;
        }
        .inline-link {
            color: #1a4b7a;
            font-weight: 600;
            text-decoration: none;
            border-bottom: 1px dashed #b0c4d8;
            transition: 0.2s;
        }
        .inline-link:hover {
            color: #f5c842;
            border-bottom-color: #f5c842;
        }
        .emoji-big {
            font-size: 1.4rem;
        }
        .search-section {
            background: #ffffff;
            border-radius: 20px;
            padding: 32px 36px;
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.04);
            margin-bottom: 40px;
        }
        .search-section h2 {
            font-size: 1.8rem;
            margin-bottom: 16px;
            color: #0b1a2e;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border: 2px solid #dce3ec;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: 0.3s;
            background: #f8fafc;
        }
        .search-form input:focus {
            border-color: #f5c842;
            box-shadow: 0 0 0 4px rgba(245, 200, 66, 0.15);
        }
        .search-form button {
            padding: 14px 32px;
            background: #0b1a2e;
            color: #f5c842;
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            transition: 0.3s;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-form button:hover {
            background: #1a2f44;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(11, 26, 46, 0.25);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        @media (max-width: 768px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .comment-section,
        .rating-section {
            background: #ffffff;
            border-radius: 20px;
            padding: 28px 32px;
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.04);
        }
        .comment-section h2,
        .rating-section h2 {
            font-size: 1.5rem;
            margin-bottom: 18px;
            color: #0b1a2e;
        }
        .comment-section textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #dce3ec;
            border-radius: 14px;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 120px;
            outline: none;
            transition: 0.3s;
            font-family: inherit;
            background: #f8fafc;
        }
        .comment-section textarea:focus {
            border-color: #f5c842;
            box-shadow: 0 0 0 4px rgba(245, 200, 66, 0.1);
        }
        .comment-section input {
            width: 100%;
            padding: 12px 18px;
            border: 2px solid #dce3ec;
            border-radius: 50px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.3s;
            background: #f8fafc;
            margin-top: 12px;
        }
        .comment-section input:focus {
            border-color: #f5c842;
        }
        .comment-section button,
        .rating-section button {
            padding: 12px 30px;
            background: #0b1a2e;
            color: #f5c842;
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            transition: 0.3s;
            margin-top: 14px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .comment-section button:hover,
        .rating-section button:hover {
            background: #1a2f44;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(11, 26, 46, 0.2);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 6px;
            margin: 12px 0 8px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2.2rem;
            color: #dce3ec;
            cursor: pointer;
            transition: 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5c842;
        }
        footer {
            background: #0b1a2e;
            color: #c8d6e5;
            padding: 40px 0 20px;
            border-top: 4px solid #f5c842;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }
        .footer-inner h3 {
            color: #f5c842;
            font-size: 1.2rem;
            margin-bottom: 14px;
        }
        .footer-inner p,
        .footer-inner a {
            color: #b0c4d8;
            font-size: 0.9rem;
        }
        .footer-inner a {
            text-decoration: none;
            display: block;
            margin-bottom: 6px;
            transition: 0.2s;
        }
        .footer-inner a:hover {
            color: #f5c842;
        }
        friend-link {
            display: block;
            background: #11243a;
            padding: 18px 24px;
            border-radius: 14px;
            margin: 16px 0 24px;
            font-size: 0.9rem;
            border: 1px solid #1a3a5a;
        }
        friend-link a {
            color: #b0c4d8;
            text-decoration: none;
            margin: 0 12px 0 4px;
            transition: 0.2s;
        }
        friend-link a:hover {
            color: #f5c842;
        }
        friend-link span {
            color: #6b8aa8;
            margin-right: 4px;
        }
        .copyright {
            border-top: 1px solid #1a3a5a;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #6b8aa8;
        }
        .copyright strong {
            color: #c8d6e5;
        }
        @media (max-width: 992px) {
            h1 {
                font-size: 2rem;
            }
            .content {
                padding: 28px 22px;
            }
            .toc-wrap ul {
                columns: 1;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 6px;
                padding: 16px 0 8px;
                border-top: 1px solid #1a3a5a;
                margin-top: 12px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 10px 0;
                font-size: 1rem;
                border-bottom: 1px solid #1a3a5a;
                width: 100%;
            }
            h1 {
                font-size: 1.7rem;
            }
            .content h2 {
                font-size: 1.5rem;
            }
            .content h3 {
                font-size: 1.25rem;
            }
            .search-form input {
                min-width: 100%;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .header-inner {
                flex-wrap: wrap;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .content {
                padding: 20px 16px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            h1 {
                font-size: 1.4rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .toc-wrap {
                padding: 18px 16px;
            }
        }
        html {
            scroll-padding-top: 100px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }