* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #0b1a2e;
            --secondary: #1e3a5f;
            --accent: #f5c542;
            --accent2: #d4a017;
            --light: #e8edf3;
            --text: #1a1a2e;
            --card: #ffffff;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
            --radius: 16px;
            --transition: 0.3s ease;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #f4f7fb;
            color: var(--text);
            line-height: 1.7;
            font-size: 1.05rem;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent2);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1a2e 0%, #1a3a5c 100%);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            letter-spacing: 1px;
            background: linear-gradient(135deg, #f5c542, #d4a017);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 0 30px rgba(245, 197, 66, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #f5c542;
            font-size: 2rem;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-list a {
            color: #e8edf3;
            padding: 8px 16px;
            border-radius: 40px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a:hover,
        .nav-list a.active {
            background: rgba(245, 197, 66, 0.2);
            color: #f5c542;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #e8edf3;
            padding: 12px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0d9e6;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            padding: 0 20px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: #888;
        }
        .breadcrumb a {
            color: var(--secondary);
        }
        .breadcrumb .current {
            color: #666;
            font-weight: 500;
        }
        .main-content {
            padding: 40px 0 60px;
        }
        .article-wrapper {
            max-width: 860px;
            margin: 0 auto;
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 36px;
        }
        .article-wrapper h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--primary);
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .article-wrapper h1 i {
            color: var(--accent2);
            margin-right: 12px;
        }
        .meta-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            font-size: 0.95rem;
            color: #666;
            margin-bottom: 28px;
            padding-bottom: 20px;
            border-bottom: 2px solid #eef2f7;
        }
        .meta-bar i {
            margin-right: 6px;
            color: var(--accent2);
        }
        .article-wrapper h2 {
            font-size: 2rem;
            margin-top: 48px;
            margin-bottom: 16px;
            color: var(--primary);
            font-weight: 700;
            border-left: 6px solid var(--accent);
            padding-left: 18px;
        }
        .article-wrapper h3 {
            font-size: 1.5rem;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--secondary);
            font-weight: 600;
        }
        .article-wrapper h4 {
            font-size: 1.2rem;
            margin-top: 24px;
            margin-bottom: 8px;
            color: #2c3e50;
            font-weight: 600;
        }
        .article-wrapper p {
            margin-bottom: 18px;
            line-height: 1.8;
        }
        .article-wrapper ul,
        .article-wrapper ol {
            margin-bottom: 20px;
            padding-left: 28px;
        }
        .article-wrapper li {
            margin-bottom: 8px;
        }
        .highlight-box {
            background: #f0f5fe;
            border-left: 5px solid var(--accent);
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .highlight-box strong {
            color: var(--primary);
        }
        .feature-img {
            margin: 28px 0;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .feature-img img {
            width: 100%;
            object-fit: cover;
            max-height: 460px;
        }
        .feature-img figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: #777;
            margin-top: 8px;
            font-style: italic;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            background: var(--secondary);
            color: #fff;
        }
        .btn:hover {
            background: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary);
        }
        .btn-accent:hover {
            background: var(--accent2);
            color: #fff;
        }
        .search-section {
            background: #eef2f7;
            border-radius: var(--radius);
            padding: 28px 32px;
            margin: 40px 0;
            box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .search-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .search-form input {
            flex: 1;
            min-width: 180px;
            padding: 14px 20px;
            border: 2px solid #d0d9e6;
            border-radius: 40px;
            font-size: 1rem;
            transition: border var(--transition);
            outline: none;
        }
        .search-form input:focus {
            border-color: var(--accent2);
            box-shadow: 0 0 0 4px rgba(212, 160, 23, 0.15);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 40px 0;
        }
        .feedback-card {
            background: #f8faff;
            border-radius: var(--radius);
            padding: 28px 30px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            border: 1px solid #e8edf3;
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 16px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 12px 16px;
            border: 2px solid #d0d9e6;
            border-radius: 12px;
            font-size: 1rem;
            transition: border var(--transition);
            outline: none;
            font-family: inherit;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: var(--accent2);
            box-shadow: 0 0 0 4px rgba(212, 160, 23, 0.1);
        }
        .feedback-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #ccc;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            transition: color var(--transition);
            color: #ccc;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f5c542;
        }
        .related-links {
            background: #f0f5fe;
            border-radius: var(--radius);
            padding: 24px 28px;
            margin: 32px 0;
        }
        .related-links ul {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px 20px;
        }
        .related-links li {
            padding: 4px 0;
        }
        .related-links a {
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .related-links a i {
            color: var(--accent2);
            font-size: 0.8rem;
        }
        .site-footer {
            background: linear-gradient(135deg, #0b1a2e, #1a3a5c);
            color: #c8d4e3;
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
        }
        .footer-inner h4 {
            color: #f5c542;
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .footer-inner a {
            color: #b0c4de;
        }
        .footer-inner a:hover {
            color: #f5c542;
        }
        friend-link {
            display: block;
            margin-top: 8px;
        }
        friend-link a {
            display: inline-block;
            padding: 4px 0;
        }
        .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            margin-top: 20px;
            text-align: center;
            font-size: 0.9rem;
            color: #8899b0;
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                width: 100%;
                flex-direction: column;
                background: rgba(11, 26, 46, 0.98);
                border-radius: 16px;
                padding: 16px 12px;
                margin-top: 8px;
                gap: 4px;
            }
            #nav-toggle:checked~.nav-list {
                display: flex;
            }
            .article-wrapper {
                padding: 24px 16px;
            }
            .article-wrapper h1 {
                font-size: 2rem;
            }
            .article-wrapper h2 {
                font-size: 1.6rem;
            }
            .article-wrapper h3 {
                font-size: 1.25rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .related-links ul {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .search-form {
                flex-direction: column;
            }
            .meta-bar {
                font-size: 0.85rem;
            }
        }
        @media (max-width: 480px) {
            .article-wrapper h1 {
                font-size: 1.6rem;
            }
            .article-wrapper {
                padding: 16px 12px;
            }
            .feedback-card {
                padding: 20px 16px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
        }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 20px;
            background: #f5c542;
            color: #0b1a2e;
            padding: 12px 24px;
            border-radius: 0 0 12px 12px;
            font-weight: 700;
            z-index: 9999;
            transition: top 0.3s;
        }
        .skip-link:focus {
            top: 0;
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--secondary);
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            transition: all var(--transition);
            opacity: 0;
            visibility: hidden;
            z-index: 999;
            border: none;
            cursor: pointer;
        }
        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .scroll-top:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-4px);
        }