*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #1a3c34;
            --primary-light: #2a5a4f;
            --accent: #e8b84b;
            --accent-hover: #d4a43a;
            --bg: #f8f6f0;
            --card-bg: #ffffff;
            --text: #1e2a2a;
            --text-light: #4a5a5a;
            --border: #ddd6c8;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --radius: 12px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent-hover);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--primary);
            color: #fff;
            height: var(--header-height);
            display: flex;
            align-items: center;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: -0.5px;
            text-decoration: none;
            transition: opacity 0.2s;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .my-logo span {
            color: #fff;
            font-weight: 300;
        }
        .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 {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        nav a {
            color: #f0ede8;
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding-bottom: 4px;
            transition: color 0.2s;
            text-decoration: none;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.25s;
        }
        nav a:hover::after {
            width: 100%;
        }
        nav a:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .breadcrumb {
            padding: 18px 0 8px;
            font-size: 0.9rem;
            color: var(--text-light);
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb a {
            color: var(--primary-light);
        }
        .breadcrumb span {
            color: #999;
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, #0f2a24 100%);
            color: #fff;
            padding: 48px 0 40px;
            border-radius: 0 0 var(--radius) var(--radius);
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight {
            color: var(--accent);
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 720px;
            opacity: 0.9;
            line-height: 1.6;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 20px;
            font-size: 0.95rem;
            opacity: 0.8;
        }
        .hero-meta i {
            margin-right: 6px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
            padding-bottom: 60px;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: calc(var(--header-height) + 24px);
            align-self: start;
        }
        .section-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px 36px;
            margin-bottom: 32px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .section-card h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 18px;
            border-left: 5px solid var(--accent);
            padding-left: 16px;
        }
        .section-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-top: 28px;
            margin-bottom: 12px;
        }
        .section-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 20px;
            margin-bottom: 8px;
        }
        .section-card p {
            margin-bottom: 16px;
            color: var(--text-light);
        }
        .section-card ul,
        .section-card ol {
            margin: 12px 0 20px 24px;
            color: var(--text-light);
        }
        .section-card li {
            margin-bottom: 6px;
        }
        .section-card .feature-img {
            margin: 24px 0 12px;
            border-radius: var(--radius);
            background: #e8e4dc;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 240px;
            overflow: hidden;
        }
        .section-card .feature-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .section-card .img-caption {
            font-size: 0.85rem;
            color: #888;
            text-align: center;
            margin-top: 4px;
            font-style: italic;
        }
        .highlight-box {
            background: #f0efe8;
            border-left: 5px solid var(--accent);
            padding: 18px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 20px 0;
        }
        .highlight-box p {
            margin-bottom: 0;
            font-weight: 500;
        }
        .data-badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            padding: 2px 12px;
            border-radius: 20px;
            font-weight: 600;
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 24px;
            margin-bottom: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            padding: 6px 0;
            border-bottom: 1px solid #f0ede8;
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            font-weight: 500;
            font-size: 0.92rem;
        }
        .sidebar-card ul li a:hover {
            color: var(--accent-hover);
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 6px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 16px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            background: #fff;
            transition: border 0.2s;
        }
        .search-form input:focus {
            outline: none;
            border-color: var(--accent);
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 0 18px;
            border-radius: 8px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: var(--primary-light);
        }
        .comment-box,
        .rating-box {
            margin-top: 24px;
        }
        .comment-box textarea {
            width: 100%;
            padding: 14px 16px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: var(--font);
            resize: vertical;
            min-height: 100px;
            transition: border 0.2s;
            background: #fff;
        }
        .comment-box textarea:focus {
            outline: none;
            border-color: var(--accent);
        }
        .comment-box .form-actions,
        .rating-box .form-actions {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-top: 10px;
            flex-wrap: wrap;
        }
        .btn {
            padding: 10px 28px;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            background: var(--primary);
            color: #fff;
        }
        .btn:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary);
        }
        .btn-accent:hover {
            background: var(--accent-hover);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 4px;
            font-size: 1.6rem;
            cursor: pointer;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #ddd;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--accent);
        }
        footer {
            background: var(--primary);
            color: #e0ddd6;
            padding: 48px 0 28px;
            margin-top: 20px;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        footer h4 {
            color: var(--accent);
            font-size: 1.1rem;
            margin-bottom: 14px;
            font-weight: 600;
        }
        footer a {
            color: #d0cdc4;
            transition: color 0.2s;
        }
        footer a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        footer ul {
            list-style: none;
            padding: 0;
        }
        footer ul li {
            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;
            opacity: 0.8;
        }
        friend-link {
            display: block;
            margin-top: 8px;
        }
        friend-link a {
            display: inline-block;
            margin: 0 4px 4px 0;
            padding: 4px 12px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 6px;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--primary);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 12px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
                border-top: 1px solid rgba(255, 255, 255, 0.05);
            }
            nav.open {
                display: flex;
            }
            nav a {
                font-size: 1.05rem;
                padding: 6px 0;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .section-card {
                padding: 20px 18px;
            }
            .section-card h2 {
                font-size: 1.4rem;
            }
            footer .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .breadcrumb {
                font-size: 0.8rem;
                padding: 12px 0 4px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .star-rating {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.6rem;
            }
            .section-card {
                padding: 16px 14px;
            }
            .container {
                padding: 0 12px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                padding: 10px;
            }
        }
        @media print {
            header,
            footer,
            .sidebar,
            .search-form,
            .comment-box,
            .rating-box,
            .nav-toggle {
                display: none !important;
            }
            body {
                padding-top: 0;
                background: #fff;
            }
            .section-card {
                box-shadow: none;
                border: 1px solid #ddd;
                page-break-inside: avoid;
            }
            .hero {
                background: #fff !important;
                color: #000 !important;
                padding: 20px 0;
            }
            .hero h1 {
                color: #000;
            }
        }