*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            background: #f5f3f0;
            color: #1a1a1a;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: #cc5200;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #ff6600;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: #1a1a1a;
            color: #fff;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #ff8700, #ffb347);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-transform: uppercase;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            -webkit-text-fill-color: #ff8700;
            font-size: 1.6rem;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo a:hover {
            text-decoration: none;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            color: #ddd;
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            background: #333;
            color: #ff8700;
            text-decoration: none;
        }
        .main-nav a.active {
            background: #ff8700;
            color: #1a1a1a;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
        }
        .breadcrumb {
            background: #2a2a2a;
            padding: 10px 20px;
            font-size: 0.85rem;
            color: #aaa;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #ff8700;
        }
        .breadcrumb span {
            color: #ccc;
        }
        .hero {
            background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
            color: #fff;
            padding: 60px 20px 50px;
            text-align: center;
            border-bottom: 4px solid #ff8700;
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.15;
            margin-bottom: 16px;
        }
        .hero h1 span {
            color: #ff8700;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 720px;
            margin: 0 auto 20px;
            color: #ccc;
        }
        .hero .last-updated {
            font-size: 0.9rem;
            color: #999;
            display: block;
            margin-top: 12px;
        }
        .main-content {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .content-body {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 48px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #ff8700;
            color: #1a1a1a;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 32px 0 12px;
            color: #2d2d2d;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 24px 0 10px;
            color: #3d3d3d;
        }
        p {
            margin-bottom: 18px;
            color: #333;
        }
        .content-body ul,
        .content-body ol {
            margin: 0 0 20px 24px;
            color: #333;
        }
        .content-body li {
            margin-bottom: 8px;
        }
        .highlight {
            background: #fff3e0;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .stat-card {
            background: #fff;
            border-radius: 12px;
            padding: 20px 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            margin: 24px 0;
            border-left: 4px solid #ff8700;
        }
        .stat-card .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: #ff8700;
        }
        .stat-card .stat-label {
            font-size: 0.95rem;
            color: #666;
        }
        .featured-image {
            border-radius: 12px;
            overflow: hidden;
            margin: 32px 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
        }
        .featured-image img {
            width: 100%;
            height: auto;
        }
        .featured-image figcaption {
            background: #1a1a1a;
            color: #ccc;
            padding: 10px 16px;
            font-size: 0.85rem;
            text-align: center;
        }
        .spec-table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            background: #fff;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        }
        .spec-table th {
            background: #1a1a1a;
            color: #fff;
            padding: 12px 18px;
            text-align: left;
            font-weight: 600;
        }
        .spec-table td {
            padding: 10px 18px;
            border-bottom: 1px solid #eee;
        }
        .spec-table tr:nth-child(even) td {
            background: #fafafa;
        }
        .spec-table tr:hover td {
            background: #fff3e0;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 12px;
            padding: 20px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            margin-bottom: 24px;
        }
        .sidebar-card h4 {
            margin-top: 0;
            border-bottom: 2px solid #ff8700;
            padding-bottom: 8px;
            font-size: 1.1rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 12px 0 0;
        }
        .sidebar-card li {
            margin-bottom: 8px;
        }
        .sidebar-card li a {
            display: block;
            padding: 6px 0;
            border-bottom: 1px solid #f0f0f0;
            font-size: 0.9rem;
        }
        .sidebar-card li a:hover {
            color: #ff6600;
            text-decoration: none;
            padding-left: 4px;
        }
        .search-section {
            background: #fff;
            border-radius: 12px;
            padding: 24px 28px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            margin: 32px 0;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.2s;
        }
        .search-form input[type="text"]:focus {
            outline: none;
            border-color: #ff8700;
        }
        .search-form button {
            background: #ff8700;
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: #e67300;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 32px 0;
        }
        .feedback-card {
            background: #fff;
            border-radius: 12px;
            padding: 24px 28px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            border-bottom: 2px solid #ff8700;
            padding-bottom: 8px;
        }
        .feedback-form label {
            display: block;
            font-weight: 600;
            margin: 12px 0 4px;
            font-size: 0.95rem;
        }
        .feedback-form input,
        .feedback-form textarea,
        .feedback-form select {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 0.95rem;
            transition: border 0.2s;
            font-family: inherit;
        }
        .feedback-form input:focus,
        .feedback-form textarea:focus,
        .feedback-form select:focus {
            outline: none;
            border-color: #ff8700;
        }
        .feedback-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-form .btn-submit {
            background: #ff8700;
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            margin-top: 14px;
            transition: background 0.2s;
        }
        .feedback-form .btn-submit:hover {
            background: #e67300;
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #ffb347;
            cursor: pointer;
        }
        .rating-stars i {
            transition: transform 0.15s, color 0.15s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
            color: #ff8700;
        }
        .site-footer {
            background: #1a1a1a;
            color: #aaa;
            padding: 40px 20px 20px;
            margin-top: 60px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-inner h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 12px;
            border-bottom: 2px solid #ff8700;
            padding-bottom: 6px;
            display: inline-block;
        }
        .footer-inner p,
        .footer-inner a {
            color: #aaa;
            font-size: 0.9rem;
        }
        .footer-inner a:hover {
            color: #ff8700;
        }
        .footer-bottom {
            max-width: 1200px;
            margin: 30px auto 0;
            padding-top: 20px;
            border-top: 1px solid #333;
            text-align: center;
            font-size: 0.85rem;
        }
        friend-link {
            display: block;
            margin-top: 8px;
            font-size: 0.9rem;
        }
        friend-link a {
            color: #ff8700;
            margin: 0 6px;
        }
        friend-link a:hover {
            color: #ffb347;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #1a1a1a;
                padding: 12px 0 16px;
                border-top: 1px solid #333;
                margin-top: 10px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 10px 16px;
                width: 100%;
                text-align: left;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .spec-table {
                font-size: 0.85rem;
            }
            .spec-table th,
            .spec-table td {
                padding: 8px 10px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input[type="text"] {
                min-width: auto;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .hero {
                padding: 40px 12px 30px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .content-body {
                padding: 0 4px;
            }
        }
        @media print {
            .site-header,
            .breadcrumb,
            .search-section,
            .feedback-grid,
            .sidebar {
                display: none !important;
            }
            .content-grid {
                display: block;
            }
            body {
                background: #fff;
                color: #000;
            }
            .hero {
                background: #fff;
                color: #000;
                border-bottom: 2px solid #000;
                padding: 20px 0;
            }
            .hero h1 {
                color: #000;
            }
            .hero h1 span {
                color: #333;
            }
        }