* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f8f9fc;
            color: #1e2a3a;
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: #2a6f97;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1a4b6d;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0f2b3b 0%, #1a4b6d 100%);
            color: #fff;
            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: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #f6c445;
            font-size: 2rem;
        }
        .my-logo:hover {
            color: #f6c445;
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            opacity: 0.7;
            display: block;
            line-height: 1;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e6f0f7;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #fff;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        .nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #eef3f7;
            padding: 10px 0;
            font-size: 0.85rem;
            color: #4a5e6e;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 6px;
            color: #8a9aa8;
        }
        .breadcrumb a {
            color: #2a6f97;
        }
        .breadcrumb .current {
            color: #1e2a3a;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(to right, #e8f0f8, #d4e4f0);
            padding: 48px 0 40px;
            border-bottom: 1px solid #d0dfe9;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #0f2b3b;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .hero h1 i {
            color: #f6c445;
        }
        .hero p {
            font-size: 1.2rem;
            color: #2a4a5e;
            max-width: 760px;
            margin-bottom: 12px;
        }
        .hero .meta {
            font-size: 0.9rem;
            color: #4a6a7e;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .hero .meta i {
            margin-right: 6px;
        }
        .content-wrap {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0 60px;
        }
        .main-content h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #0f2b3b;
            margin: 40px 0 16px;
            border-left: 5px solid #f6c445;
            padding-left: 18px;
        }
        .main-content h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1a4b6d;
            margin: 32px 0 12px;
        }
        .main-content h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2a5a7a;
            margin: 24px 0 8px;
        }
        .main-content p {
            margin-bottom: 18px;
            color: #2a3a4a;
        }
        .main-content ul,
        .main-content ol {
            margin: 12px 0 20px 24px;
            color: #2a3a4a;
        }
        .main-content li {
            margin-bottom: 6px;
        }
        .main-content .highlight-box {
            background: #eef6fb;
            border-left: 4px solid #2a6f97;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .main-content .highlight-box strong {
            color: #0f2b3b;
        }
        .main-content .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }
        .stat-grid .stat-card {
            background: #fff;
            border-radius: 14px;
            padding: 20px 16px;
            text-align: center;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
            border: 1px solid #e2edf5;
            transition: transform 0.2s;
        }
        .stat-grid .stat-card:hover {
            transform: translateY(-4px);
        }
        .stat-grid .stat-card .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #1a4b6d;
        }
        .stat-grid .stat-card .label {
            font-size: 0.9rem;
            color: #4a6a7e;
        }
        .main-content .feature-img {
            border-radius: 16px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
            margin: 28px 0;
            width: 100%;
        }
        .sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px 20px;
            margin-bottom: 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #e2edf5;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0f2b3b;
            margin-bottom: 14px;
            border-bottom: 2px solid #f6c445;
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card ul li {
            margin-bottom: 10px;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 0;
            font-size: 0.95rem;
        }
        .sidebar-card ul li a i {
            color: #f6c445;
            width: 18px;
            text-align: center;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #d0dfe9;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.25s;
        }
        .search-form input:focus {
            border-color: #2a6f97;
        }
        .search-form button {
            background: #2a6f97;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0 22px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s;
        }
        .search-form button:hover {
            background: #1a4b6d;
        }
        .feedback-section {
            background: #fff;
            border-radius: 16px;
            padding: 28px 30px;
            margin: 40px 0 20px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e2edf5;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .feedback-grid form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feedback-grid form label {
            font-weight: 600;
            font-size: 0.95rem;
        }
        .feedback-grid form input,
        .feedback-grid form textarea,
        .feedback-grid form select {
            padding: 12px 16px;
            border: 2px solid #d0dfe9;
            border-radius: 10px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.25s;
            font-family: inherit;
        }
        .feedback-grid form input:focus,
        .feedback-grid form textarea:focus,
        .feedback-grid form select:focus {
            border-color: #2a6f97;
        }
        .feedback-grid form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-grid form .btn-submit {
            background: #2a6f97;
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            align-self: flex-start;
        }
        .feedback-grid form .btn-submit:hover {
            background: #1a4b6d;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #d0dfe9;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            transition: color 0.2s;
            color: #d0dfe9;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f6c445;
        }
        .site-footer {
            background: #0f2b3b;
            color: #cbdbe6;
            padding: 40px 0 24px;
            margin-top: 20px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
        }
        .footer-inner h4 {
            color: #f6c445;
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .footer-inner a {
            color: #b0ccdd;
        }
        .footer-inner a:hover {
            color: #f6c445;
        }
        .footer-inner ul {
            list-style: none;
        }
        .footer-inner ul li {
            margin-bottom: 6px;
        }
        .friend-link {
            display: block;
            background: #1a3f55;
            padding: 16px 20px;
            border-radius: 12px;
            margin: 16px 0 8px;
        }
        .friend-link a {
            color: #f6c445;
            font-weight: 600;
        }
        .friend-link a:hover {
            color: #fff;
        }
        .copyright {
            border-top: 1px solid #1a4b6d;
            padding-top: 20px;
            margin-top: 28px;
            text-align: center;
            font-size: 0.85rem;
            color: #8aacbe;
        }
        @media (max-width: 992px) {
            .content-wrap {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                padding: 16px 0 8px;
            }
            .nav-toggle:checked~.main-nav {
                display: flex;
            }
            .header-inner {
                align-items: center;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .stat-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .container {
                padding: 0 14px;
            }
            .feedback-section {
                padding: 18px 16px;
            }
            .feedback-grid form .btn-submit {
                width: 100%;
                text-align: center;
            }
        }
        html {
            scroll-behavior: smooth;
        }
        .last-updated {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #e8f0f8;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #2a5a7a;
        }