*,
        *::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, sans-serif;
            background: #f4f7fb;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #1a6fb5;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0d4b7a;
            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: 1.3;
            color: #0b1c2e;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0b1c2e 0%, #1a3a5a 100%);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            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;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #fdd835;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
            letter-spacing: -0.5px;
            transition: transform 0.2s;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #ffeb3b;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 300;
            color: #b0cfe0;
            display: block;
            letter-spacing: 1px;
        }
        .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);
        }
        .main-nav {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            color: #e0edf5;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fdd835;
            text-decoration: none;
        }
        .main-nav a.active {
            background: #fdd835;
            color: #0b1c2e;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 10px 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d0dae6;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #7a8a9e;
        }
        .breadcrumb a {
            color: #1a6fb5;
        }
        .breadcrumb .current {
            color: #4a5a6e;
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(145deg, #0f2a42, #1e4a6a);
            color: #fff;
            padding: 50px 0 40px;
            text-align: center;
            border-bottom: 4px solid #fdd835;
        }
        .hero h1 {
            font-size: 2.6rem;
            color: #fdd835;
            margin-bottom: 12px;
            text-shadow: 0 3px 12px rgba(0, 0, 0, 0.3);
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 720px;
            margin: 0 auto 16px;
            opacity: 0.92;
        }
        .hero .update-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .search-section {
            background: #fff;
            padding: 28px 0;
            border-bottom: 1px solid #dce3ec;
        }
        .search-form {
            display: flex;
            max-width: 640px;
            margin: 0 auto;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #cdd9e8;
        }
        .search-form input {
            flex: 1;
            border: none;
            padding: 14px 22px;
            font-size: 1rem;
            outline: none;
            background: #f9fbfd;
        }
        .search-form button {
            background: #1a6fb5;
            border: none;
            color: #fff;
            padding: 0 28px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: #0d4b7a;
        }
        .main-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0 60px;
        }
        .content-area {
            min-width: 0;
        }
        .sidebar {
            min-width: 0;
        }
        .content-area section {
            margin-bottom: 48px;
        }
        .content-area h2 {
            font-size: 2rem;
            border-left: 5px solid #fdd835;
            padding-left: 16px;
            margin-bottom: 20px;
            color: #0b1c2e;
        }
        .content-area h3 {
            font-size: 1.4rem;
            margin: 28px 0 12px;
            color: #1a3a5a;
        }
        .content-area h4 {
            font-size: 1.15rem;
            margin: 20px 0 8px;
            color: #2a4a6a;
        }
        .content-area p {
            margin-bottom: 16px;
            color: #2a3a4a;
        }
        .content-area ul,
        .content-area ol {
            margin: 12px 0 20px 24px;
        }
        .content-area li {
            margin-bottom: 6px;
        }
        .highlight-box {
            background: #eef4fa;
            border-left: 5px solid #1a6fb5;
            padding: 18px 24px;
            border-radius: 8px;
            margin: 24px 0;
        }
        .highlight-box.success {
            border-left-color: #2e7d32;
            background: #e8f5e9;
        }
        .highlight-box.warning {
            border-left-color: #f9a825;
            background: #fff8e1;
        }
        .highlight-box.tip {
            border-left-color: #6a1b9a;
            background: #f3e5f5;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }
        .stat-card {
            background: #fff;
            border-radius: 12px;
            padding: 20px 16px;
            text-align: center;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #e2e9f2;
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #1a6fb5;
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: #5a6a7e;
            margin-top: 4px;
        }
        .featured-image {
            margin: 28px 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.08);
        }
        .featured-image figcaption {
            background: #f4f7fb;
            padding: 10px 16px;
            font-size: 0.85rem;
            color: #4a5a6e;
            text-align: center;
            border-bottom: 1px solid #dce3ec;
        }
        .interaction-panel {
            background: #fff;
            border-radius: 16px;
            padding: 28px 32px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
            border: 1px solid #e2e9f2;
            margin: 40px 0;
        }
        .interaction-panel h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 4px;
            color: #1e2a3a;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #cdd9e8;
            border-radius: 8px;
            font-size: 0.95rem;
            background: #f9fbfd;
            transition: border 0.2s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #1a6fb5;
            outline: none;
            box-shadow: 0 0 0 3px rgba(26, 111, 181, 0.15);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }
        .btn {
            display: inline-block;
            background: #1a6fb5;
            color: #fff;
            padding: 12px 32px;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .btn:hover {
            background: #0d4b7a;
            transform: translateY(-1px);
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn-secondary {
            background: #e9edf2;
            color: #1e2a3a;
        }
        .btn-secondary:hover {
            background: #d0dae6;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #d0dae6;
            cursor: pointer;
            user-select: none;
        }
        .star-rating .star {
            transition: color 0.15s;
        }
        .star-rating .star.active {
            color: #f9a825;
        }
        .star-rating .star:hover {
            color: #f9a825;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 14px;
            padding: 22px 20px;
            margin-bottom: 28px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e2e9f2;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            border-bottom: 2px solid #fdd835;
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card li {
            padding: 6px 0;
            border-bottom: 1px solid #f0f4fa;
        }
        .sidebar-card li:last-child {
            border-bottom: none;
        }
        .sidebar-card li a {
            color: #1a6fb5;
            font-weight: 500;
        }
        .sidebar-card li a:hover {
            color: #0d4b7a;
        }
        footer {
            background: #0b1c2e;
            color: #b0cfe0;
            padding: 40px 0 24px;
            margin-top: 20px;
        }
        footer a {
            color: #8bbde0;
        }
        footer a:hover {
            color: #fdd835;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 28px;
            margin-bottom: 28px;
        }
        .footer-grid h4 {
            color: #fdd835;
            font-size: 1.05rem;
            margin-bottom: 10px;
        }
        .footer-grid ul {
            list-style: none;
            padding: 0;
        }
        .footer-grid li {
            padding: 4px 0;
        }
        friend-link {
            display: block;
            padding: 14px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin: 12px 0 18px;
            font-size: 0.9rem;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
        }
        .copyright {
            text-align: center;
            font-size: 0.82rem;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            color: #7a9aae;
        }
        @media (max-width: 992px) {
            .main-layout {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: 2;
            }
            .hero h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 10px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 10px 16px;
                border-radius: 8px;
                width: 100%;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .container {
                padding: 0 14px;
            }
            .interaction-panel {
                padding: 20px 16px;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .content-area h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.4rem;
            }
            .hero h1 {
                font-size: 1.4rem;
            }
            .stat-grid {
                grid-template-columns: 1fr;
            }
            .search-form input {
                padding: 10px 14px;
                font-size: 0.9rem;
            }
            .search-form button {
                padding: 0 16px;
            }
        }
        .text-small {
            font-size: 0.85rem;
            color: #5a6a7e;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mb-8 {
            margin-bottom: 8px;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .gap-4 {
            gap: 4px;
        }
        .fw-700 {
            font-weight: 700;
        }
        .color-accent {
            color: #fdd835;
        }