*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f9f7f4;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #b45309;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #7a2e0e;
            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, #1e3a5f 0%, #2a4a7a 100%);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px 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: #fbbf24;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            font-size: 2rem;
            color: #f59e0b;
        }
        .my-logo:hover {
            color: #fcd34d;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #fbbf24;
            color: #fbbf24;
            font-size: 1.6rem;
            padding: 6px 14px;
            border-radius: 6px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: #fbbf24;
            color: #1e3a5f;
        }
        .main-nav {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            color: #e0e7ff;
            padding: 8px 16px;
            border-radius: 6px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: background 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            background: rgba(251, 191, 36, 0.2);
            color: #fbbf24;
            text-decoration: none;
        }
        .breadcrumb {
            background: #f1f0ec;
            padding: 10px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #e2ddd6;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 6px;
            color: #8a7f72;
        }
        .breadcrumb a {
            color: #b45309;
        }
        .breadcrumb .current {
            color: #5c4e3e;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(145deg, #fdf6ee 0%, #f5ede4 100%);
            padding: 50px 0 40px;
            border-bottom: 1px solid #e2ddd6;
        }
        .hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #1e3a5f;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .hero h1 i {
            color: #f59e0b;
        }
        .hero p {
            font-size: 1.2rem;
            color: #3d4f60;
            max-width: 780px;
        }
        .hero .meta-info {
            margin-top: 20px;
            font-size: 0.95rem;
            color: #6b5e4e;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .hero .meta-info span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .content-wrap {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        .main-content h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #1e3a5f;
            margin-top: 48px;
            margin-bottom: 18px;
            border-left: 5px solid #f59e0b;
            padding-left: 16px;
        }
        .main-content h2:first-of-type {
            margin-top: 0;
        }
        .main-content h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #2a4a7a;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        .main-content h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #3d5a3d;
            margin-top: 24px;
            margin-bottom: 8px;
        }
        .main-content p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #2a3a4a;
        }
        .main-content ul,
        .main-content ol {
            margin: 16px 0 24px 24px;
        }
        .main-content li {
            margin-bottom: 10px;
            font-size: 1.05rem;
        }
        .main-content .highlight-box {
            background: #fdf6ee;
            border-left: 6px solid #f59e0b;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .main-content .highlight-box strong {
            color: #b45309;
        }
        .main-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.98rem;
        }
        .main-content th,
        .main-content td {
            padding: 12px 16px;
            border: 1px solid #dcd5cc;
            text-align: left;
        }
        .main-content th {
            background: #1e3a5f;
            color: #fff;
            font-weight: 600;
        }
        .main-content td {
            background: #fff;
        }
        .main-content .img-wrapper {
            margin: 32px 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        }
        .main-content .img-wrapper img {
            width: 100%;
            display: block;
        }
        .main-content .img-wrapper figcaption {
            background: #f1f0ec;
            padding: 12px 20px;
            font-size: 0.9rem;
            color: #5c4e3e;
            text-align: center;
            font-style: italic;
        }
        .main-content .insight-badge {
            display: inline-block;
            background: #fbbf24;
            color: #1e3a5f;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 2px 12px;
            border-radius: 20px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 12px;
            padding: 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            margin-bottom: 24px;
            border: 1px solid #e8e2da;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #1e3a5f;
            margin-bottom: 16px;
            border-bottom: 2px solid #fbbf24;
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
        }
        .sidebar-card li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 0;
            color: #3d4f60;
            font-weight: 500;
        }
        .sidebar-card li a:hover {
            color: #b45309;
            text-decoration: none;
        }
        .sidebar-card li a i {
            color: #f59e0b;
            font-size: 0.9rem;
            width: 20px;
        }
        .interaction-section {
            background: #fff;
            border-radius: 16px;
            padding: 32px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            margin: 40px 0;
            border: 1px solid #e8e2da;
        }
        .interaction-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #1e3a5f;
            margin-bottom: 24px;
            border-left: 5px solid #f59e0b;
            padding-left: 16px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 6px;
            color: #2a3a4a;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #dcd5cc;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.2s;
            background: #fafaf9;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #f59e0b;
            background: #fff;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border: none;
            border-radius: 10px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            font-family: inherit;
        }
        .btn-primary {
            background: #1e3a5f;
            color: #fff;
        }
        .btn-primary:hover {
            background: #2a4a7a;
            transform: translateY(-2px);
        }
        .btn-warning {
            background: #f59e0b;
            color: #1e3a5f;
        }
        .btn-warning:hover {
            background: #fbbf24;
            transform: translateY(-2px);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 6px;
            font-size: 2rem;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #ddd6cc;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f59e0b;
        }
        .star-rating label i {
            font-size: 2rem;
        }
        .site-footer {
            background: #1e2a3a;
            color: #d1d5db;
            padding: 48px 0 32px;
            margin-top: 40px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .site-footer h4 {
            color: #fbbf24;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }
        .site-footer a {
            color: #b0b8c4;
        }
        .site-footer a:hover {
            color: #fbbf24;
            text-decoration: none;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
        }
        .site-footer li {
            margin-bottom: 8px;
        }
        .site-footer .copyright {
            border-top: 1px solid #3a4a5a;
            padding-top: 24px;
            text-align: center;
            font-size: 0.9rem;
            color: #8a9aaa;
        }
        friend-link {
            display: block;
            margin-top: 16px;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 8px 4px 0;
            padding: 4px 12px;
            background: rgba(251, 191, 36, 0.1);
            border-radius: 6px;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            background: rgba(251, 191, 36, 0.2);
        }
        @media (max-width: 992px) {
            .content-wrap {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding-top: 16px;
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                border-radius: 6px;
                background: rgba(255, 255, 255, 0.05);
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .content-wrap {
                padding: 20px 0;
                gap: 24px;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .interaction-section {
                padding: 20px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .main-content h2 {
                font-size: 1.6rem;
            }
            .main-content h3 {
                font-size: 1.3rem;
            }
            .star-rating {
                font-size: 1.6rem;
            }
            .star-rating label i {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .form-group input,
            .form-group textarea,
            .form-group select {
                padding: 12px 14px;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .gap-8 {
            gap: 8px;
        }
        .items-center {
            align-items: center;
        }