*,
        *::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: #f4f6f9;
            color: #1e2a3a;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #b8860b;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #8b6508;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(145deg, #0b1a2a, #142b3e);
            color: #fff;
            padding: 1rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .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: 1px;
            background: linear-gradient(135deg, #f5d75d, #b8860b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            display: inline-block;
            transition: transform 0.2s ease;
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
            background: none;
            -webkit-text-fill-color: transparent;
        }
        .my-logo a:hover {
            text-decoration: none;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e0e8f0;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: background 0.2s ease, color 0.2s ease;
            text-decoration: none;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f5d75d;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s ease;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #eef2f7;
            padding: 0.7rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dce2ec;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.6rem;
            color: #8a9bb0;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #2c5282;
        }
        .breadcrumb .current {
            color: #6c7a8d;
            font-weight: 600;
        }
        .main-content {
            padding: 2.5rem 0 3rem;
        }
        h1 {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 1.2rem;
            color: #0b1a2a;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-top: 3rem;
            margin-bottom: 1.2rem;
            color: #142b3e;
            border-bottom: 3px solid #b8860b;
            padding-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-top: 2.2rem;
            margin-bottom: 0.8rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-top: 1.6rem;
            margin-bottom: 0.5rem;
            color: #2c5282;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            color: #2d3f52;
        }
        .lead {
            font-size: 1.25rem;
            font-weight: 400;
            color: #1e2a3a;
            border-left: 4px solid #b8860b;
            padding-left: 1.2rem;
            background: #f8fafc;
            padding: 1rem 1.5rem;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            font-size: 0.95rem;
            color: #6c7a8d;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #dce2ec;
        }
        .article-meta i {
            margin-right: 0.4rem;
            color: #b8860b;
        }
        .featured-image {
            margin: 2rem 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.1);
        }
        .featured-image img {
            width: 100%;
            object-fit: cover;
        }
        .featured-image figcaption {
            background: #f0f4fa;
            padding: 0.8rem 1.2rem;
            font-size: 0.9rem;
            color: #4a5d73;
            font-style: italic;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8rem 0;
            background: #fff;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.06);
        }
        .data-table th {
            background: #142b3e;
            color: #fff;
            padding: 0.9rem 1.2rem;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 0.8rem 1.2rem;
            border-bottom: 1px solid #e8edf4;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #f6f9ff;
        }
        .form-card {
            background: #fff;
            border-radius: 12px;
            padding: 2rem 2.2rem;
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.06);
            margin: 2rem 0;
            border: 1px solid #e8edf4;
        }
        .form-card h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.4rem;
            color: #1e3a5f;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1px solid #cdd7e6;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.2s ease, box-shadow 0.2s ease;
            background: #fafcff;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #b8860b;
            box-shadow: 0 0 0 3px rgba(184, 134, 11, 0.15);
            outline: none;
        }
        .form-group textarea {
            resize: vertical;
            min-height: 110px;
        }
        .btn {
            padding: 0.7rem 2rem;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        .btn-primary {
            background: #b8860b;
            color: #fff;
        }
        .btn-primary:hover {
            background: #9e720a;
            transform: translateY(-1px);
        }
        .btn-secondary {
            background: #142b3e;
            color: #fff;
        }
        .btn-secondary:hover {
            background: #1e3a5f;
            transform: translateY(-1px);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            font-size: 1.8rem;
            margin: 0.5rem 0 1rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #d1d9e6;
            cursor: pointer;
            transition: color 0.15s ease;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5c842;
        }
        .comment-list {
            margin: 2rem 0;
        }
        .comment-item {
            padding: 1.2rem 1.5rem;
            background: #f8fafc;
            border-radius: 10px;
            margin-bottom: 1rem;
            border-left: 4px solid #b8860b;
        }
        .comment-item .author {
            font-weight: 700;
            color: #0b1a2a;
        }
        .comment-item .date {
            font-size: 0.85rem;
            color: #8a9bb0;
            margin-left: 1rem;
        }
        .comment-item .text {
            margin-top: 0.4rem;
        }
        .info-box {
            background: #eef6ff;
            border-left: 5px solid #b8860b;
            padding: 1.2rem 1.8rem;
            border-radius: 0 10px 10px 0;
            margin: 1.8rem 0;
        }
        .info-box strong {
            color: #0b1a2a;
        }
        .site-footer {
            background: #0b1a2a;
            color: #c8d4e3;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: space-between;
        }
        .footer-col {
            flex: 1 1 240px;
        }
        .footer-col h4 {
            color: #f5d75d;
            margin-top: 0;
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }
        .footer-col a {
            color: #b0c4db;
            display: block;
            padding: 0.25rem 0;
            font-size: 0.95rem;
        }
        .footer-col a:hover {
            color: #f5d75d;
        }
        .footer-bottom {
            border-top: 1px solid #1e3a5f;
            padding-top: 1.5rem;
            margin-top: 2rem;
            text-align: center;
            font-size: 0.9rem;
            color: #8a9bb0;
        }
        friend-link {
            display: block;
            background: #1a2f44;
            padding: 1.2rem 1.8rem;
            border-radius: 10px;
            margin: 1.5rem 0 0.5rem;
            font-size: 0.95rem;
            color: #c8d4e3;
        }
        friend-link a {
            color: #f5d75d;
            display: inline-block;
            margin: 0.2rem 0.8rem 0.2rem 0;
        }
        friend-link a:hover {
            color: #ffeb7a;
        }
        @media (max-width: 820px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 1rem 0 0.5rem;
                gap: 0.2rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.7rem 1rem;
                border-radius: 6px;
                width: 100%;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .form-card {
                padding: 1.5rem;
            }
            .data-table {
                font-size: 0.9rem;
            }
            .data-table th,
            .data-table td {
                padding: 0.6rem 0.8rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            h1 {
                font-size: 1.7rem;
            }
            .lead {
                font-size: 1.05rem;
                padding: 0.8rem 1rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 0.4rem;
            }
            .star-rating {
                font-size: 1.5rem;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }
        .skip-link {
            position: absolute;
            top: -100px;
            left: 0;
            background: #b8860b;
            color: #fff;
            padding: 0.6rem 1.2rem;
            z-index: 200;
            border-radius: 0 0 8px 0;
            font-weight: 600;
        }
        .skip-link:focus {
            top: 0;
        }
        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            * {
                transition-duration: 0.01ms !important;
            }
        }