*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f8f9fc;
            color: #1a1d23;
            line-height: 1.75;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #0052cc;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #003d99;
            text-decoration: underline;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
            color: #0b0f17;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 1.2rem;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.4rem 0 1rem;
            border-bottom: 3px solid #e6edf5;
            padding-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.4rem;
            margin: 1.8rem 0 0.8rem;
        }
        h4 {
            font-size: 1.15rem;
            margin: 1.2rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin-bottom: 1.2rem;
            padding-left: 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: #0f1623;
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.7rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #f0c27f, #fc5c7d);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: opacity 0.3s;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
            -webkit-text-fill-color: transparent;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 0.2rem;
            flex-wrap: wrap;
            padding: 0;
            margin: 0;
        }
        .nav-list li a {
            color: #cfdbe9;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.92rem;
            transition: background 0.25s, color 0.25s;
            white-space: nowrap;
        }
        .nav-list li a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            text-decoration: none;
        }
        .nav-list li a.active {
            background: #fc5c7d;
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            line-height: 1;
        }
        .breadcrumb {
            background: #eef2f7;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dce3ec;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #7b8ba3;
        }
        .breadcrumb a {
            color: #3b4d66;
        }
        .breadcrumb .current {
            color: #1a1d23;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(145deg, #121a2b 0%, #1f2a3f 100%);
            color: #fff;
            padding: 3rem 0 2.5rem;
            text-align: center;
        }
        .hero h1 {
            font-size: 2.8rem;
            background: linear-gradient(135deg, #f7d794, #f8a5c2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.8rem;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 1.2rem;
            color: #c8d2e3;
        }
        .hero .meta-info {
            font-size: 0.95rem;
            color: #a0b1cc;
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .hero .meta-info span i {
            margin-right: 0.4rem;
        }
        .search-section {
            background: #fff;
            padding: 1.5rem 0;
            border-bottom: 1px solid #e2e8f0;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
            border-radius: 60px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }
        .search-form input[type="text"] {
            flex: 1;
            padding: 0.9rem 1.4rem;
            border: 1px solid #d0d9e6;
            border-right: none;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input[type="text"]:focus {
            border-color: #fc5c7d;
        }
        .search-form button {
            background: #fc5c7d;
            color: #fff;
            border: none;
            padding: 0 1.8rem;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.25s;
        }
        .search-form button:hover {
            background: #e04a6a;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        @media (max-width: 1024px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
        }
        .content-article {
            background: #fff;
            border-radius: 16px;
            padding: 2rem 2.2rem;
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.04);
        }
        .content-article .featured-image {
            border-radius: 12px;
            margin: 1.5rem 0 2rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .content-article .last-updated {
            display: inline-block;
            background: #eef5ff;
            padding: 0.4rem 1.2rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #2d4b7a;
            margin-bottom: 1.5rem;
        }
        .highlight-box {
            background: #f0f5fe;
            border-left: 5px solid #fc5c7d;
            padding: 1.2rem 1.6rem;
            border-radius: 8px;
            margin: 1.6rem 0;
        }
        .highlight-box strong {
            color: #1a2b4a;
        }
        .link-list-inline {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
            padding: 1rem 0;
            list-style: none;
        }
        .link-list-inline li a {
            background: #f0f4fe;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-size: 0.9rem;
            border: 1px solid #dae3f0;
            transition: background 0.2s, border-color 0.2s;
        }
        .link-list-inline li a:hover {
            background: #fc5c7d;
            color: #fff;
            border-color: #fc5c7d;
            text-decoration: none;
        }
        .bullet-icon {
            margin-right: 0.4rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.6rem;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            margin-bottom: 1rem;
            border-bottom: 2px solid #eef2f7;
            padding-bottom: 0.5rem;
        }
        .sidebar-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-links li {
            margin-bottom: 0.6rem;
        }
        .sidebar-links li a {
            display: block;
            padding: 0.5rem 0.8rem;
            background: #f6f9fd;
            border-radius: 8px;
            font-size: 0.92rem;
            transition: background 0.2s, transform 0.15s;
        }
        .sidebar-links li a:hover {
            background: #fc5c7d;
            color: #fff;
            text-decoration: none;
            transform: translateX(4px);
        }
        .feedback-section {
            background: #fff;
            border-radius: 16px;
            padding: 2rem 2.2rem;
            margin-top: 2rem;
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.04);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .feedback-form label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            font-size: 0.95rem;
        }
        .feedback-form input,
        .feedback-form textarea,
        .feedback-form select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1px solid #d0d9e6;
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            margin-bottom: 1rem;
            transition: border 0.2s;
        }
        .feedback-form input:focus,
        .feedback-form textarea:focus,
        .feedback-form select:focus {
            border-color: #fc5c7d;
            outline: none;
        }
        .feedback-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-form .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            margin-bottom: 1rem;
            direction: rtl;
        }
        .feedback-form .star-rating input {
            display: none;
        }
        .feedback-form .star-rating label {
            cursor: pointer;
            color: #d0d9e6;
            transition: color 0.2s;
            font-size: 1.8rem;
        }
        .feedback-form .star-rating label:hover,
        .feedback-form .star-rating label:hover~label,
        .feedback-form .star-rating input:checked~label {
            color: #f5b342;
        }
        .btn-primary {
            background: #fc5c7d;
            color: #fff;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 60px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary:hover {
            background: #e04a6a;
            transform: translateY(-2px);
        }
        .site-footer {
            background: #0f1623;
            color: #b0c0d9;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr;
                text-align: center;
            }
        }
        .footer-inner h4 {
            color: #fff;
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 0.4rem;
        }
        .footer-links li a {
            color: #b0c0d9;
            font-size: 0.92rem;
        }
        .footer-links li a:hover {
            color: #fc5c7d;
        }
        .footer-copyright {
            border-top: 1px solid #1f2a3f;
            padding-top: 1.2rem;
            margin-top: 2rem;
            text-align: center;
            font-size: 0.85rem;
            color: #7a8ba8;
        }
        friend-link {
            display: block;
            padding: 0.5rem 0;
        }
        friend-link a {
            color: #b0c0d9;
            margin: 0 0.4rem;
        }
        friend-link a:hover {
            color: #fc5c7d;
        }
        @media (max-width: 900px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #151e30;
                padding: 1rem 0;
                border-radius: 12px;
                margin-top: 0.8rem;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li a {
                padding: 0.7rem 1.2rem;
                white-space: normal;
            }
            .header-inner {
                align-items: center;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .content-article {
                padding: 1.2rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            html {
                font-size: 14px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .container {
                padding: 0 0.8rem;
            }
            .content-article {
                padding: 1rem;
            }
            .feedback-section {
                padding: 1.2rem;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #fc5c7d;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 6px 24px rgba(252, 92, 125, 0.35);
            transition: transform 0.2s, opacity 0.2s;
            opacity: 0;
            pointer-events: none;
            border: none;
            cursor: pointer;
            z-index: 999;
        }
        .scroll-top.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .scroll-top:hover {
            transform: scale(1.1);
        }
        .toc {
            background: #f5f8fe;
            border-radius: 12px;
            padding: 1.2rem 1.6rem;
            margin-bottom: 2rem;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ol {
            margin-bottom: 0;
            padding-left: 1.4rem;
        }
        .toc ol li {
            margin-bottom: 0.3rem;
        }
        .toc ol li a {
            color: #1a2b4a;
        }