*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f7fa;
            color: #1a2634;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #0055a5;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #e67e22;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
            color: #0a1a2b;
        }
        h1 {
            font-size: 2.2rem;
        }
        h2 {
            font-size: 1.7rem;
            border-bottom: 3px solid #e67e22;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.35rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0a1a2b 0%, #1a3a4f 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .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, #f9d423, #e67e22);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            display: inline-block;
        }
        .my-logo a {
            color: inherit;
            background: inherit;
            -webkit-background-clip: inherit;
            -webkit-text-fill-color: inherit;
            background-clip: inherit;
        }
        .my-logo a:hover {
            opacity: 0.85;
        }
        .my-logo small {
            font-size: 0.7rem;
            display: block;
            -webkit-text-fill-color: #b0c4d9;
            color: #b0c4d9;
            font-weight: 400;
            letter-spacing: 1px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.6rem;
            padding: 0.3rem 0.8rem;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e0eaf5;
            padding: 0.4rem 0.9rem;
            border-radius: 6px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f9d423;
        }
        .main-nav a.active {
            background: rgba(230, 126, 34, 0.25);
            color: #f9d423;
        }
        .breadcrumb {
            background: #eef2f7;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #dce3ed;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            padding: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.4rem;
            color: #8899aa;
        }
        .breadcrumb a {
            color: #2c5f8a;
        }
        .breadcrumb .current {
            color: #6a7a8a;
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(135deg, #0f2a3f, #1d4a6b);
            color: #fff;
            padding: 2.8rem 0 2.2rem;
            text-align: center;
            border-bottom: 5px solid #e67e22;
        }
        .hero h1 {
            font-size: 2.6rem;
            color: #fff;
            margin-top: 0;
            letter-spacing: -0.5px;
        }
        .hero h1 span {
            background: linear-gradient(135deg, #f9d423, #e67e22);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 760px;
            margin: 0.8rem auto 1.2rem;
            color: #cbdce8;
        }
        .hero-meta {
            font-size: 0.9rem;
            color: #aabcce;
            display: flex;
            justify-content: center;
            gap: 1.8rem;
            flex-wrap: wrap;
        }
        .hero-meta i {
            margin-right: 0.3rem;
            color: #f9d423;
        }
        .search-bar {
            background: #fff;
            padding: 1.2rem 0;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
        }
        .search-form {
            display: flex;
            gap: 0.6rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid #dce3ed;
            border-radius: 8px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.2s;
        }
        .search-form input:focus {
            border-color: #e67e22;
        }
        .search-form button {
            padding: 0.7rem 1.6rem;
            background: #e67e22;
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: #cf6a17;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.4rem;
            padding: 2.4rem 0;
        }
        .content-area {
            background: #fff;
            padding: 2rem 2.2rem;
            border-radius: 12px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
        }
        .sidebar {
            background: #fff;
            padding: 1.5rem 1.6rem;
            border-radius: 12px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
            align-self: start;
            position: sticky;
            top: 90px;
        }
        .sidebar h3 {
            font-size: 1.1rem;
            margin-top: 0;
            border-bottom: 2px solid #eef2f7;
            padding-bottom: 0.5rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f3f8;
        }
        .sidebar li a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.92rem;
        }
        .sidebar li a i {
            color: #e67e22;
            font-size: 0.75rem;
        }
        .featured-image {
            margin: 1.6rem 0 2rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .featured-image figcaption {
            background: #f8fafc;
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            color: #556677;
            border-top: 1px solid #eef2f7;
        }
        .styled-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.4rem 0;
            font-size: 0.95rem;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .styled-table thead {
            background: #0a1a2b;
            color: #fff;
        }
        .styled-table th,
        .styled-table td {
            padding: 0.7rem 1rem;
            text-align: left;
            border-bottom: 1px solid #eef2f7;
        }
        .styled-table tbody tr:hover {
            background: #f8fafc;
        }
        .feedback-section {
            margin-top: 2.4rem;
            padding-top: 1.8rem;
            border-top: 2px solid #eef2f7;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
        }
        .feedback-card {
            background: #f8fafc;
            padding: 1.4rem 1.6rem;
            border-radius: 10px;
            border: 1px solid #e6ecf3;
        }
        .feedback-card h4 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .feedback-card textarea,
        .feedback-card input,
        .feedback-card select {
            width: 100%;
            padding: 0.6rem 0.8rem;
            border: 2px solid #dce3ed;
            border-radius: 6px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: border-color 0.2s;
            margin-bottom: 0.6rem;
        }
        .feedback-card textarea:focus,
        .feedback-card input:focus,
        .feedback-card select:focus {
            border-color: #e67e22;
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: #e67e22;
            color: #fff;
            border: none;
            padding: 0.6rem 1.6rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 0.95rem;
        }
        .feedback-card .btn-submit:hover {
            background: #cf6a17;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            cursor: pointer;
            color: #dce3ed;
            transition: color 0.15s;
            margin-bottom: 0.6rem;
        }
        .star-rating .star.active {
            color: #f9d423;
        }
        .star-rating .star:hover,
        .star-rating .star.hover {
            color: #f9d423;
        }
        friend-link {
            display: block;
            padding: 1.2rem 0;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.8rem;
            padding: 0;
        }
        friend-link li a {
            color: #2c5f8a;
            font-size: 0.92rem;
        }
        friend-link li a:hover {
            color: #e67e22;
        }
        .site-footer {
            background: #0a1a2b;
            color: #b0c4d9;
            padding: 2rem 0 1.4rem;
            margin-top: 2rem;
            border-top: 4px solid #e67e22;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.2rem;
        }
        .footer-inner .copyright {
            font-size: 0.85rem;
        }
        .footer-inner .copyright strong {
            color: #e0eaf5;
        }
        @media (max-width: 900px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                background: #0f2a3f;
                padding: 0.8rem 0.6rem;
                border-radius: 8px;
                margin-top: 0.6rem;
                gap: 0.3rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.5rem 0.8rem;
                border-radius: 4px;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .content-area {
                padding: 1.2rem 1rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .styled-table {
                font-size: 0.8rem;
            }
            .styled-table th,
            .styled-table td {
                padding: 0.4rem 0.5rem;
            }
            .search-form {
                flex-direction: column;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .container {
                padding: 0 0.8rem;
            }
            .feedback-card {
                padding: 1rem;
            }
        }
        .highlight-box {
            background: #fef9f0;
            border-left: 5px solid #e67e22;
            padding: 1rem 1.4rem;
            border-radius: 0 8px 8px 0;
            margin: 1.4rem 0;
        }
        .highlight-box strong {
            color: #0a1a2b;
        }
        .tag {
            display: inline-block;
            background: #eef2f7;
            padding: 0.15rem 0.6rem;
            border-radius: 20px;
            font-size: 0.75rem;
            color: #4a5a6a;
            margin-right: 0.3rem;
        }
        .btn-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #e67e22;
            color: #fff;
            border: none;
            border-radius: 50%;
            width: 44px;
            height: 44px;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            transition: background 0.2s, transform 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 999;
        }
        .btn-top:hover {
            background: #cf6a17;
            transform: translateY(-2px);
        }
        @media (max-width: 600px) {
            .btn-top {
                bottom: 1rem;
                right: 1rem;
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
        }