*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.7;
            color: #1e1e2a;
            background: #f8f9fc;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #2b5f8a;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #c44536;
            text-decoration: underline;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1b2a4a 0%, #2c3e6b 100%);
            color: #fff;
            padding: 0 0 12px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            flex-wrap: wrap;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            padding: 4px 18px;
            border-radius: 40px;
            border: 2px solid rgba(255, 215, 0, 0.5);
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .my-logo:hover {
            background: rgba(255, 215, 0, 0.15);
            border-color: #ffd700;
            text-decoration: none;
            color: #ffd700;
        }
        .my-logo span {
            color: #ffd700;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 6px;
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: #fff;
            border-radius: 4px;
            transition: 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }
        .main-nav {
            display: flex;
            gap: 8px 18px;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            color: #e8edf5;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 4px 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: #ffd700;
            border-bottom-color: #ffd700;
            text-decoration: none;
        }
        .breadcrumb {
            padding: 8px 20px 4px;
            max-width: 1200px;
            margin: 0 auto;
            font-size: 0.85rem;
            color: #b0c4de;
            display: flex;
            flex-wrap: wrap;
            gap: 4px 8px;
        }
        .breadcrumb a {
            color: #b0c4de;
        }
        .breadcrumb a:hover {
            color: #ffd700;
            text-decoration: none;
        }
        .breadcrumb .sep {
            color: #6a7fa0;
        }
        .breadcrumb .current {
            color: #e8edf5;
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(145deg, #e9eef6 0%, #dce3ef 100%);
            padding: 50px 20px 40px;
            text-align: center;
            border-bottom: 4px solid #2c3e6b;
        }
        .hero h1 {
            font-size: 2.6rem;
            color: #1b2a4a;
            margin-bottom: 12px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .hero p {
            font-size: 1.2rem;
            color: #2c3e6b;
            max-width: 780px;
            margin: 0 auto 16px;
        }
        .hero .meta-info {
            font-size: 0.95rem;
            color: #4a5a7a;
        }
        .hero .meta-info i {
            margin-right: 4px;
        }
        .search-section {
            background: #fff;
            padding: 24px 20px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .search-form {
            display: flex;
            max-width: 640px;
            margin: 0 auto;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .search-form input[type="text"] {
            flex: 1 1 280px;
            padding: 14px 20px;
            border: 2px solid #d0d8e8;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: 0.3s;
            background: #f5f7fb;
        }
        .search-form input[type="text"]:focus {
            border-color: #2c3e6b;
            background: #fff;
            box-shadow: 0 0 0 4px rgba(44, 62, 107, 0.08);
        }
        .search-form button {
            padding: 14px 36px;
            background: #2c3e6b;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.25s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #1b2a4a;
            transform: scale(1.02);
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 20px 60px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            color: #1b2a4a;
            margin-bottom: 12px;
            border-bottom: 2px solid #eef2f7;
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            margin-bottom: 8px;
        }
        .sidebar-card ul li a {
            color: #2c3e6b;
            font-weight: 500;
        }
        .sidebar-card ul li a:hover {
            color: #c44536;
        }
        .main-content h2 {
            font-size: 2rem;
            color: #1b2a4a;
            margin: 48px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #e0e6f0;
            font-weight: 700;
        }
        .main-content h3 {
            font-size: 1.5rem;
            color: #2c3e6b;
            margin: 32px 0 12px;
            font-weight: 600;
        }
        .main-content h4 {
            font-size: 1.2rem;
            color: #3a4a6a;
            margin: 24px 0 10px;
            font-weight: 600;
        }
        .main-content p {
            margin-bottom: 18px;
            color: #2a2a3a;
            font-size: 1.05rem;
        }
        .main-content .lead {
            font-size: 1.2rem;
            color: #1e2a44;
            font-weight: 500;
            background: #eef3fa;
            padding: 16px 24px;
            border-radius: 12px;
            border-left: 5px solid #2c3e6b;
        }
        .main-content ul,
        .main-content ol {
            margin: 0 0 20px 24px;
            color: #2a2a3a;
            font-size: 1.05rem;
        }
        .main-content li {
            margin-bottom: 6px;
        }
        .main-content blockquote {
            background: #eef3fa;
            border-left: 5px solid #2c3e6b;
            padding: 16px 24px;
            margin: 20px 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2a3a5a;
        }
        .main-content .img-wrapper {
            margin: 32px 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            background: #eef2f7;
            padding: 8px;
        }
        .main-content .img-wrapper img {
            border-radius: 12px;
            width: 100%;
        }
        .main-content .img-wrapper figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: #4a5a7a;
            padding: 12px 8px 4px;
            font-style: italic;
        }
        .main-content .highlight-box {
            background: linear-gradient(135deg, #f0f4fe, #e8edf7);
            border-radius: 16px;
            padding: 24px 28px;
            margin: 28px 0;
            border: 1px solid #d0d8e8;
        }
        .main-content .highlight-box h4 {
            margin-top: 0;
        }
        .main-content .btn-link {
            display: inline-block;
            background: #2c3e6b;
            color: #fff;
            padding: 8px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: 0.25s;
        }
        .main-content .btn-link:hover {
            background: #1b2a4a;
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
        }
        .emoji-big {
            font-size: 1.4em;
        }
        .feedback-section {
            background: #fff;
            border-radius: 20px;
            padding: 32px 28px;
            margin-top: 50px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
        }
        .feedback-section h3 {
            font-size: 1.6rem;
            color: #1b2a4a;
            margin-bottom: 20px;
            border-bottom: 2px solid #eef2f7;
            padding-bottom: 12px;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .feedback-card {
            background: #f8f9fc;
            border-radius: 16px;
            padding: 24px;
        }
        .feedback-card h4 {
            font-size: 1.2rem;
            margin-bottom: 16px;
            color: #2c3e6b;
        }
        .feedback-card label {
            display: block;
            font-weight: 500;
            margin-bottom: 4px;
            color: #2a3a5a;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #d0d8e8;
            border-radius: 12px;
            font-size: 1rem;
            transition: 0.3s;
            background: #fff;
            font-family: inherit;
            margin-bottom: 14px;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #2c3e6b;
            box-shadow: 0 0 0 4px rgba(44, 62, 107, 0.06);
            outline: none;
        }
        .feedback-card textarea {
            resize: vertical;
            min-height: 90px;
        }
        .feedback-card .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin-bottom: 14px;
        }
        .feedback-card .star-rating input {
            display: none;
        }
        .feedback-card .star-rating label {
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            transition: 0.2s;
            margin-bottom: 0;
        }
        .feedback-card .star-rating label:hover,
        .feedback-card .star-rating label:hover~label,
        .feedback-card .star-rating input:checked~label {
            color: #f5b342;
        }
        .feedback-card .btn-submit {
            padding: 12px 32px;
            background: #2c3e6b;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-card .btn-submit:hover {
            background: #1b2a4a;
            transform: translateY(-2px);
        }
        .feedback-card .btn-submit i {
            font-size: 1.1rem;
        }
        .site-footer {
            background: #1b2a4a;
            color: #c8d4e6;
            padding: 40px 20px 28px;
            margin-top: 30px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .footer-inner h4 {
            color: #ffd700;
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .footer-inner a {
            color: #b0c4de;
        }
        .footer-inner a:hover {
            color: #ffd700;
        }
        .friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            padding: 12px 0;
            border-top: 1px solid #2a3f60;
            margin-top: 20px;
        }
        .friend-link a {
            color: #b0c4de;
            font-weight: 500;
        }
        .friend-link a:hover {
            color: #ffd700;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            margin-top: 20px;
            border-top: 1px solid #2a3f60;
            font-size: 0.9rem;
            color: #8899bb;
            grid-column: 1 / -1;
        }
        .copyright strong {
            color: #c8d4e6;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .sidebar-card {
                margin-bottom: 0;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 16px 20px 10px;
                background: #1b2a4a;
                border-top: 1px solid #2a3f60;
                gap: 6px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 8px 0;
                font-size: 1.05rem;
                border-bottom: 1px solid #2a3f60;
            }
            .header-top {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.4rem;
                padding: 2px 14px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .main-content h2 {
                font-size: 1.6rem;
            }
            .main-content h3 {
                font-size: 1.3rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 6px 16px 2px;
            }
            .search-form input[type="text"] {
                flex: 1 1 100%;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .feedback-section {
                padding: 20px 16px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .hero {
                padding: 30px 12px 24px;
            }
            .hero h1 {
                font-size: 1.5rem;
            }
            .main-content p {
                font-size: 0.98rem;
            }
            .main-content .lead {
                font-size: 1.05rem;
                padding: 12px 16px;
            }
            .feedback-card {
                padding: 16px;
            }
        }
        .scroll-offset {
            scroll-margin-top: 100px;
        }
        @media print {
            .site-header {
                position: static;
                background: #fff;
                color: #000;
            }
            .site-header a {
                color: #000;
            }
            .search-section,
            .feedback-section,
            .sidebar {
                display: none;
            }
            .content-wrapper {
                display: block;
            }
            .site-footer {
                background: #f0f0f0;
                color: #000;
            }
        }