*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, Helvetica, Arial, sans-serif;
            background: #f5f7fa;
            color: #1e293b;
            line-height: 1.7;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #0f3b5e;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #c0262d;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        :root {
            --primary: #0f3b5e;
            --primary-light: #1a5a7a;
            --accent: #c0262d;
            --accent-light: #e04a4f;
            --gold: #f59e0b;
            --bg-card: #ffffff;
            --bg-soft: #f0f4f8;
            --text-muted: #475569;
            --border-light: #e2e8f0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --radius: 12px;
        }
        .site-header {
            background: linear-gradient(135deg, #0a1f2e, #0f3b5e);
            color: #fff;
            padding: 0.75rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            background: linear-gradient(135deg, #facc15, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 8px rgba(245, 158, 11, 0.25);
            transition: opacity 0.3s;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .my-logo i {
            -webkit-text-fill-color: #facc15;
            margin-right: 0.3rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.5rem;
            padding: 0.4rem 0.8rem;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            gap: 1.8rem;
            list-style: none;
            padding: 0;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-menu a {
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: all 0.25s;
        }
        .nav-menu a:hover {
            color: #facc15;
            border-bottom-color: #facc15;
        }
        .nav-menu a i {
            margin-right: 0.3rem;
            font-size: 0.9rem;
        }
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--border-light);
            padding: 0.6rem 0;
            font-size: 0.85rem;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            gap: 0.4rem 0.6rem;
            color: var(--text-muted);
        }
        .breadcrumb li+li::before {
            content: "/";
            margin-right: 0.6rem;
            color: #94a3b8;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .active {
            color: var(--accent);
            font-weight: 500;
        }
        .page-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 1.75rem;
            margin-bottom: 2rem;
            border: 1px solid var(--border-light);
            transition: box-shadow 0.3s;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0a1f2e;
            margin-bottom: 1rem;
        }
        h1 i {
            color: var(--gold);
        }
        h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin: 2rem 0 1rem;
            color: #0f3b5e;
            border-left: 5px solid var(--accent);
            padding-left: 1rem;
        }
        h2 i {
            color: var(--accent-light);
        }
        h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin: 1.6rem 0 0.8rem;
            color: #1a5a7a;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 1.2rem 0 0.5rem;
            color: #2d4a5e;
        }
        .lead {
            font-size: 1.15rem;
            color: var(--text-muted);
            border-left: 4px solid var(--gold);
            padding-left: 1.25rem;
            margin-bottom: 1.5rem;
            font-weight: 400;
        }
        .text-muted {
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        .update-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: #eef2ff;
            color: #1e40af;
            padding: 0.3rem 1rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 1rem;
        }
        .featured-img-wrap {
            margin: 1.5rem 0 2rem;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: #e2e8f0;
        }
        .featured-img-wrap img {
            width: 100%;
            object-fit: cover;
            min-height: 200px;
            background: #cbd5e1;
        }
        .img-caption {
            font-size: 0.8rem;
            color: var(--text-muted);
            text-align: center;
            padding: 0.5rem 1rem 0.8rem;
            background: #f8fafc;
            border-top: 1px solid var(--border-light);
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 0.3rem;
            color: #1e293b;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1.5px solid var(--border-light);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border 0.25s, box-shadow 0.25s;
            background: #fff;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 59, 94, 0.12);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 80px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.8rem;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.25s;
            background: var(--primary);
            color: #fff;
        }
        .btn:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(15, 59, 94, 0.25);
        }
        .btn-accent {
            background: var(--accent);
        }
        .btn-accent:hover {
            background: var(--accent-light);
        }
        .btn-sm {
            padding: 0.4rem 1rem;
            font-size: 0.8rem;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.15rem;
            font-size: 1.8rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #d1d5db;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--gold);
        }
        .rating-display {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 600;
            color: var(--gold);
        }
        .rating-display .stars {
            color: var(--gold);
            letter-spacing: 2px;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            margin: 1.5rem 0;
        }
        .search-form input {
            flex: 1;
            padding: 0.7rem 1.2rem;
            border: 1.5px solid var(--border-light);
            border-radius: 8px;
            font-size: 0.95rem;
            transition: border 0.25s;
        }
        .search-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 59, 94, 0.1);
            outline: none;
        }
        .comment-item {
            padding: 1rem 0;
            border-bottom: 1px solid var(--border-light);
        }
        .comment-item:last-child {
            border-bottom: none;
        }
        .comment-author {
            font-weight: 600;
            color: #0f3b5e;
        }
        .comment-date {
            font-size: 0.8rem;
            color: #94a3b8;
            margin-left: 0.8rem;
        }
        .comment-text {
            margin-top: 0.3rem;
            color: #334155;
        }
        .sidebar .card {
            padding: 1.25rem;
        }
        .sidebar h3 {
            font-size: 1.1rem;
            margin-top: 0;
            border-bottom: 2px solid var(--gold);
            padding-bottom: 0.4rem;
            display: inline-block;
        }
        .link-list {
            list-style: none;
            padding: 0;
        }
        .link-list li {
            padding: 0.5rem 0;
            border-bottom: 1px dashed var(--border-light);
        }
        .link-list li:last-child {
            border-bottom: none;
        }
        .link-list a {
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .link-list a i {
            color: var(--accent-light);
            font-size: 0.7rem;
        }
        .site-footer {
            background: #0a1f2e;
            color: #cbd5e1;
            padding: 2.5rem 0 1.5rem;
            margin-top: 2rem;
            border-top: 4px solid var(--gold);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand h4 {
            color: #facc15;
            font-size: 1.3rem;
            margin: 0 0 0.5rem;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: #94a3b8;
        }
        friend-link {
            display: block;
            font-style: normal;
        }
        friend-link a {
            display: block;
            padding: 0.35rem 0;
            color: #94a3b8;
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        friend-link a:hover {
            color: #facc15;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.2rem;
            text-align: center;
            font-size: 0.85rem;
            color: #64748b;
        }
        .copyright a {
            color: #94a3b8;
        }
        @media (max-width: 1024px) {
            .page-wrapper {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .sidebar {
                position: static;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0.3rem;
                padding: 1rem 0 0.5rem;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 0.5rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.5rem 0;
                border-bottom: none;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .card {
                padding: 1.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .star-rating {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.9rem;
            }
            h1 {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .btn {
                padding: 0.6rem 1.2rem;
                font-size: 0.85rem;
            }
        }
        .emoji-lg {
            font-size: 1.8rem;
            line-height: 1;
        }
        .divider {
            height: 2px;
            background: linear-gradient(to right, transparent, var(--gold), transparent);
            margin: 2rem 0;
            opacity: 0.4;
        }
        .tag {
            display: inline-block;
            background: #eef2ff;
            color: #1e40af;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
        }
        .highlight-box {
            background: #fef9e7;
            border-left: 5px solid var(--gold);
            padding: 1.2rem 1.5rem;
            border-radius: 0 8px 8px 0;
            margin: 1.5rem 0;
        }
        .highlight-box strong {
            color: #92400e;
        }
        .pro-tip {
            background: #e8f5e9;
            border-left: 5px solid #2e7d32;
            padding: 1rem 1.5rem;
            border-radius: 0 8px 8px 0;
            margin: 1.2rem 0;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2rem 0;
            font-size: 0.9rem;
        }
        .data-table th {
            background: #0f3b5e;
            color: #fff;
            padding: 0.6rem 0.8rem;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 0.5rem 0.8rem;
            border-bottom: 1px solid var(--border-light);
        }
        .data-table tr:nth-child(even) {
            background: #f8fafc;
        }
        .data-table tr:hover {
            background: #eef2ff;
        }
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f1f1;
        }
        ::-webkit-scrollbar-thumb {
            background: #94a3b8;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #64748b;
        }