* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
            background: #F1FAEE;
            color: #2B2D42;
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #1D3557;
            text-decoration: underline;
            text-underline-offset: 2px;
            transition: color 0.2s;
        }
        a:hover {
            color: #E63946;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1D3557 0%, #2B4B7A 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;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            color: #F4A261;
            font-size: 2rem;
        }
        .my-logo span {
            background: linear-gradient(90deg, #F4A261, #E63946);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo:hover {
            color: #fff;
            opacity: 0.92;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-list {
            display: flex;
            gap: 24px;
            list-style: none;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-list a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: all 0.25s;
        }
        .nav-list a:hover {
            color: #F4A261;
            border-bottom-color: #F4A261;
        }
        .nav-list .active a {
            color: #F4A261;
            border-bottom-color: #F4A261;
        }
        .breadcrumb {
            background: #fff;
            padding: 10px 0;
            border-bottom: 1px solid #e0e7ef;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: #8899aa;
        }
        .breadcrumb a {
            color: #1D3557;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #8899aa;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        @media(max-width:992px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.6rem;
            line-height: 1.2;
            color: #1D3557;
            margin-bottom: 12px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .article-body h2 {
            font-size: 1.9rem;
            margin-top: 48px;
            margin-bottom: 16px;
            color: #1D3557;
            font-weight: 700;
            border-left: 5px solid #E63946;
            padding-left: 18px;
        }
        .article-body h3 {
            font-size: 1.4rem;
            margin-top: 32px;
            margin-bottom: 12px;
            color: #2B4B7A;
            font-weight: 600;
        }
        .article-body h4 {
            font-size: 1.15rem;
            margin-top: 24px;
            margin-bottom: 8px;
            color: #1D3557;
            font-weight: 600;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 20px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .article-body .highlight-box {
            background: #fff;
            border-radius: 12px;
            padding: 24px 28px;
            margin: 28px 0;
            border-left: 6px solid #F4A261;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }
        .article-body .highlight-box strong {
            color: #E63946;
        }
        .article-body .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }
        .article-body .stat-card {
            background: #fff;
            border-radius: 10px;
            padding: 18px 14px;
            text-align: center;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            transition: transform 0.2s;
        }
        .article-body .stat-card:hover {
            transform: translateY(-4px);
        }
        .article-body .stat-card .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #E63946;
            display: block;
        }
        .article-body .stat-card .label {
            font-size: 0.9rem;
            color: #556677;
            margin-top: 4px;
        }
        .article-body .img-wrap {
            margin: 28px 0;
            border-radius: 12px;
            overflow: hidden;
            background: #e0e7ef;
        }
        .article-body .img-wrap img {
            width: 100%;
            object-fit: cover;
        }
        .article-body .img-wrap .caption {
            padding: 10px 16px;
            font-size: 0.9rem;
            color: #556677;
            background: #fff;
            border-top: 1px solid #e0e7ef;
        }
        .article-body blockquote {
            background: #fff;
            border-left: 5px solid #1D3557;
            padding: 18px 24px;
            margin: 24px 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #3a4a5a;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .article-body blockquote strong {
            color: #1D3557;
        }
        .last-updated {
            display: inline-block;
            background: #e0e7ef;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: #556677;
            margin-bottom: 20px;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 12px;
            padding: 22px 20px;
            margin-bottom: 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            color: #1D3557;
            margin-bottom: 12px;
            border-bottom: 2px solid #F4A261;
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
            border-bottom: 1px solid #f0f2f5;
            padding-bottom: 10px;
        }
        .sidebar-card li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .sidebar-card a {
            text-decoration: none;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card a i {
            color: #E63946;
            font-size: 0.85rem;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin: 18px 0;
        }
        .search-form input {
            flex: 1;
            padding: 10px 16px;
            border: 2px solid #d0d8e0;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.25s;
        }
        .search-form input:focus {
            border-color: #1D3557;
        }
        .search-form button {
            background: #E63946;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .search-form button:hover {
            background: #c1121f;
        }
        .feedback-section {
            background: #fff;
            border-radius: 16px;
            padding: 32px 28px;
            margin: 48px 0 32px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        @media(max-width:768px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .feedback-section h2 {
            margin-top: 0;
            border-left-color: #F4A261;
        }
        .feedback-section form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .feedback-section input,
        .feedback-section textarea,
        .feedback-section select {
            padding: 10px 14px;
            border: 2px solid #d0d8e0;
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: border 0.25s;
        }
        .feedback-section input:focus,
        .feedback-section textarea:focus,
        .feedback-section select:focus {
            border-color: #1D3557;
        }
        .feedback-section textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-section .btn-submit {
            background: #1D3557;
            color: #fff;
            border: none;
            padding: 12px 24px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s;
            align-self: flex-start;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-section .btn-submit:hover {
            background: #2B4B7A;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #d0d8e0;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating i {
            transition: color 0.2s;
        }
        .star-rating i:hover,
        .star-rating i:hover~i {
            color: #F4A261;
        }
        .site-footer {
            background: #1D3557;
            color: rgba(255, 255, 255, 0.85);
            padding: 40px 0 24px;
            margin-top: 48px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
        }
        @media(max-width:768px) {
            .footer-inner {
                grid-template-columns: 1fr;
            }
        }
        .site-footer h4 {
            color: #F4A261;
            margin-bottom: 12px;
            font-size: 1.1rem;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
            transition: color 0.2s;
        }
        .site-footer a:hover {
            color: #F4A261;
            text-decoration: underline;
        }
        .site-footer .friend-link {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .site-footer .friend-link a {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .friend-link a i {
            font-size: 0.75rem;
            color: #F4A261;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            margin-top: 28px;
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .copyright strong {
            color: #F4A261;
        }
        @media(max-width:768px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0;
                padding: 16px 0 8px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 12px;
            }
            .nav-list.show {
                display: flex;
            }
            .nav-list li {
                width: 100%;
            }
            .nav-list a {
                display: block;
                padding: 10px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .article-body h1 {
                font-size: 2rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media(max-width:480px) {
            .article-body h1 {
                font-size: 1.7rem;
            }
            .article-body p {
                font-size: 0.98rem;
            }
            .feedback-section {
                padding: 20px 16px;
            }
            .sidebar-card {
                padding: 16px;
            }
        }