* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #0a1428;
            --primary-light: #1a2a4a;
            --accent: #c8aa6e;
            --accent-hover: #dabe8b;
            --gold: #f0e6d2;
            --bg: #f7f7f9;
            --card-bg: #ffffff;
            --text: #1e1e1e;
            --text-light: #555;
            --border: #ddd;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --transition: 0.3s ease;
            --max-width: 1120px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        header {
            background: var(--primary);
            color: var(--gold);
            padding: 0 1.5rem;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: 1px;
            color: var(--gold);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: opacity var(--transition);
        }
        .my-logo i {
            color: var(--accent);
            font-size: 1.8rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            color: var(--gold);
        }
        .my-logo span {
            font-weight: 300;
            font-size: 0.85rem;
            color: var(--accent);
            margin-left: 4px;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        nav a {
            color: var(--gold);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: border-color var(--transition), color var(--transition);
        }
        nav a:hover {
            border-bottom-color: var(--accent);
            color: var(--accent-hover);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--gold);
            background: none;
            border: none;
            padding: 4px 8px;
        }
        .breadcrumb {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0.8rem 1.5rem;
            font-size: 0.85rem;
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(4px);
            border-bottom: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
        }
        .breadcrumb a {
            color: var(--primary-light);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb span {
            color: var(--text-light);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }
        main {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 2rem 1.5rem 3rem;
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 2.5rem;
        }
        .content-area {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 84px;
            align-self: start;
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 1.6rem 1.4rem;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 0.5rem;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            border-left: 5px solid var(--accent);
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-top: 2rem;
            margin-bottom: 0.6rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 1.4rem;
            margin-bottom: 0.4rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text);
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 1.8rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid var(--border);
        }
        .meta-info i {
            margin-right: 5px;
            color: var(--accent);
        }
        .last-updated {
            font-weight: 600;
            color: var(--primary);
        }
        .hero-img {
            width: 100%;
            border-radius: var(--radius);
            margin: 1.5rem 0 2rem;
            box-shadow: var(--shadow);
            background: var(--primary-light);
            display: block;
            max-height: 420px;
            object-fit: cover;
        }
        .content-area ul,
        .content-area ol {
            margin: 0.8rem 0 1.4rem 1.6rem;
        }
        .content-area li {
            margin-bottom: 0.4rem;
        }
        .highlight-box {
            background: #f0e6d2;
            border-left: 5px solid var(--accent);
            padding: 1.4rem 1.8rem;
            border-radius: 0 8px 8px 0;
            margin: 1.6rem 0;
        }
        .highlight-box strong {
            color: var(--primary);
        }
        .quote-block {
            font-style: italic;
            background: var(--card-bg);
            padding: 1.2rem 1.8rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin: 1.5rem 0;
            color: var(--text-light);
        }
        .quote-block cite {
            display: block;
            margin-top: 0.6rem;
            font-weight: 600;
            color: var(--primary);
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .stat-card {
            background: var(--card-bg);
            padding: 1.2rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
            text-align: center;
            border: 1px solid var(--border);
        }
        .stat-card .number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            margin-bottom: 1rem;
            border-left: 4px solid var(--accent);
            padding-left: 0.8rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin: 0 0 1.8rem;
        }
        .sidebar li {
            margin-bottom: 0.5rem;
        }
        .sidebar a {
            display: block;
            padding: 0.4rem 0.6rem;
            border-radius: 6px;
            background: #f4f4f6;
            font-size: 0.9rem;
            transition: background var(--transition), color var(--transition);
        }
        .sidebar a:hover {
            background: var(--accent);
            color: #fff;
        }
        .sidebar .search-box {
            display: flex;
            gap: 6px;
            margin-bottom: 1.8rem;
        }
        .sidebar .search-box input {
            flex: 1;
            padding: 0.6rem 0.8rem;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 0.9rem;
            outline: none;
            transition: border var(--transition);
        }
        .sidebar .search-box input:focus {
            border-color: var(--accent);
        }
        .sidebar .search-box button {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 0.6rem 1rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background var(--transition);
        }
        .sidebar .search-box button:hover {
            background: var(--accent-hover);
        }
        .feedback-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid var(--border);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .feedback-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 1.8rem;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .feedback-card input,
        .feedback-card textarea {
            padding: 0.7rem 0.9rem;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: var(--font);
            outline: none;
            transition: border var(--transition);
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus {
            border-color: var(--accent);
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card button {
            background: var(--primary);
            color: var(--gold);
            border: none;
            padding: 0.7rem 1.2rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), transform 0.2s;
        }
        .feedback-card button:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            font-size: 1.6rem;
            color: var(--border);
            cursor: pointer;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            transition: color 0.2s;
            color: #ccc;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5b342;
        }
        friend-link {
            display: block;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.3rem 0.6rem 0.3rem 0;
            padding: 0.3rem 0.8rem;
            background: #eef0f4;
            border-radius: 20px;
            font-size: 0.85rem;
            transition: background var(--transition), color var(--transition);
        }
        friend-link a:hover {
            background: var(--accent);
            color: #fff;
        }
        footer {
            background: var(--primary);
            color: var(--gold);
            padding: 2.5rem 1.5rem 1.8rem;
            margin-top: 2rem;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-col h4 {
            color: var(--accent);
            margin-bottom: 0.8rem;
            font-size: 1rem;
            border: none;
            padding: 0;
        }
        .footer-col a {
            color: var(--gold);
            opacity: 0.8;
            display: block;
            margin-bottom: 0.3rem;
            font-size: 0.9rem;
        }
        .footer-col a:hover {
            opacity: 1;
            color: var(--accent-hover);
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-top: 1.5rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            text-align: center;
            font-size: 0.85rem;
            opacity: 0.75;
        }
        @media (max-width: 900px) {
            main {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: auto;
                padding: 0.6rem 0;
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.4rem;
                padding: 0.8rem 0 0.4rem;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 0.4rem;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 0.5rem 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
                width: 100%;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 0.5rem 1rem;
            }
            main {
                padding: 1.2rem 1rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .stat-grid {
                grid-template-columns: 1fr;
            }
            .meta-info {
                flex-direction: column;
                gap: 0.3rem;
            }
            h1 {
                font-size: 1.5rem;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }