* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f5f7fa;
            color: #1e2a3a;
            line-height: 1.7;
        }
        a {
            color: #c0392b;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #e67e22;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 0.8rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .site-header {
            background: linear-gradient(135deg, #1a2a3a 0%, #2c3e50 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #f1c40f;
            text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.3);
            letter-spacing: 0.5px;
            transition: transform 0.2s ease;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.03);
            color: #f39c12;
            text-decoration: none;
        }
        .my-logo i {
            margin-right: 6px;
            color: #e67e22;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #ecf0f1;
            padding: 0.4rem 0.8rem;
            border-radius: 6px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .main-nav a:hover {
            background: rgba(241, 196, 15, 0.2);
            color: #f1c40f;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 4px;
        }
        .hamburger {
            display: none;
            font-size: 1.6rem;
            background: none;
            border: none;
            color: #fff;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 4px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #f0f2f5;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #e0e4e8;
        }
        .breadcrumb-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.3rem;
        }
        .breadcrumb-inner a {
            color: #2c3e50;
        }
        .breadcrumb-inner a:hover {
            color: #c0392b;
        }
        .breadcrumb-inner span {
            color: #7f8c8d;
        }
        .breadcrumb-inner i {
            font-size: 0.7rem;
            color: #95a5a6;
            margin: 0 0.2rem;
        }
        .hero {
            background: linear-gradient(135deg, #1a2a3a 0%, #2c3e50 70%, #c0392b 100%);
            color: #fff;
            padding: 3rem 0 2.5rem;
            text-align: center;
            position: relative;
        }
        .hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 0.8rem;
            line-height: 1.2;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }
        .hero h1 i {
            color: #f1c40f;
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 720px;
            margin: 0 auto 1.2rem;
            opacity: 0.92;
        }
        .hero .last-update {
            font-size: 0.9rem;
            opacity: 0.75;
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            padding: 0.3rem 1.2rem;
            border-radius: 30px;
        }
        .hero .last-update i {
            margin-right: 6px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            padding: 2.5rem 0;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 90px;
            align-self: start;
        }
        .main-content section {
            background: #fff;
            border-radius: 12px;
            padding: 1.8rem 2rem;
            margin-bottom: 2rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #eef0f3;
        }
        .main-content h2 {
            font-size: 1.8rem;
            color: #1a2a3a;
            margin: 0 0 1.2rem 0;
            padding-bottom: 0.6rem;
            border-bottom: 3px solid #c0392b;
            display: inline-block;
        }
        .main-content h2 i {
            color: #c0392b;
            margin-right: 8px;
        }
        .main-content h3 {
            font-size: 1.35rem;
            color: #2c3e50;
            margin: 1.6rem 0 0.8rem 0;
        }
        .main-content h3 i {
            color: #e67e22;
            margin-right: 6px;
        }
        .main-content h4 {
            font-size: 1.1rem;
            color: #34495e;
            margin: 1.2rem 0 0.5rem 0;
            font-weight: 600;
        }
        .main-content p {
            margin: 0.8rem 0;
            text-align: justify;
        }
        .main-content .feature-box {
            background: #f8f9fa;
            border-left: 4px solid #c0392b;
            padding: 1rem 1.5rem;
            margin: 1.2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .main-content .feature-box i {
            color: #c0392b;
            margin-right: 6px;
        }
        .content-image {
            margin: 1.8rem 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        }
        .content-image img {
            width: 100%;
            object-fit: cover;
        }
        .content-image figcaption {
            background: #f0f2f5;
            padding: 0.6rem 1rem;
            font-size: 0.9rem;
            color: #555;
            text-align: center;
            font-style: italic;
        }
        .search-box {
            display: flex;
            gap: 0.5rem;
            margin: 1.2rem 0;
            flex-wrap: wrap;
        }
        .search-box input {
            flex: 1;
            min-width: 180px;
            padding: 0.7rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
            outline: none;
        }
        .search-box input:focus {
            border-color: #c0392b;
        }
        .search-box button {
            padding: 0.7rem 1.6rem;
            background: #c0392b;
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s ease;
            font-weight: 600;
        }
        .search-box button:hover {
            background: #e67e22;
        }
        .comment-area,
        .rating-area {
            margin-top: 1.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid #e8ecf0;
        }
        .comment-area h4,
        .rating-area h4 {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.15rem;
        }
        .comment-area textarea {
            width: 100%;
            min-height: 100px;
            padding: 0.8rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            transition: border-color 0.3s;
            outline: none;
        }
        .comment-area textarea:focus {
            border-color: #c0392b;
        }
        .comment-area .form-group,
        .rating-area .form-group {
            margin: 0.8rem 0;
        }
        .comment-area .form-group input,
        .rating-area .form-group input {
            width: 100%;
            padding: 0.6rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }
        .comment-area .form-group input:focus,
        .rating-area .form-group input:focus {
            border-color: #c0392b;
        }
        .btn-submit {
            padding: 0.6rem 1.8rem;
            background: #c0392b;
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.2s ease;
        }
        .btn-submit:hover {
            background: #e67e22;
        }
        .star-rating {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #ddd;
            cursor: pointer;
            margin: 0.5rem 0;
        }
        .star-rating i {
            transition: color 0.2s ease, transform 0.15s ease;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #f1c40f;
            transform: scale(1.1);
        }
        .star-rating i.selected {
            color: #f1c40f;
        }
        .sidebar .widget {
            background: #fff;
            border-radius: 12px;
            padding: 1.5rem 1.5rem;
            margin-bottom: 1.8rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #eef0f3;
        }
        .sidebar .widget h3 {
            font-size: 1.2rem;
            color: #1a2a3a;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #c0392b;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar .widget ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar .widget ul li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f2f5;
        }
        .sidebar .widget ul li:last-child {
            border-bottom: none;
        }
        .sidebar .widget ul li a {
            color: #2c3e50;
            font-size: 0.95rem;
            display: block;
            padding: 0.2rem 0;
        }
        .sidebar .widget ul li a:hover {
            color: #c0392b;
            padding-left: 4px;
        }
        .sidebar .widget ul li a i {
            color: #c0392b;
            margin-right: 6px;
            font-size: 0.8rem;
        }
        .site-footer {
            background: #1a2a3a;
            color: #ccd1d9;
            padding: 2.5rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        .footer-inner h4 {
            color: #f1c40f;
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }
        .footer-inner a {
            color: #bdc3c7;
        }
        .footer-inner a:hover {
            color: #f1c40f;
        }
        .footer-inner ul {
            list-style: none;
            padding: 0;
        }
        .footer-inner ul li {
            padding: 0.25rem 0;
        }
        .footer-inner ul li i {
            margin-right: 6px;
            font-size: 0.8rem;
            color: #e67e22;
        }
        .footer-bottom {
            border-top: 1px solid #2c3e50;
            padding-top: 1.2rem;
            margin-top: 1.8rem;
            text-align: center;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        .footer-bottom a {
            color: #f1c40f;
        }
        .footer-bottom .copyright {
            margin-top: 0.4rem;
            font-size: 0.85rem;
        }
        friend-link {
            display: block;
            margin: 0.8rem 0;
            padding: 0.6rem 0;
            border-top: 1px solid #2c3e50;
            font-size: 0.95rem;
        }
        friend-link a {
            color: #f1c40f;
            margin: 0 6px;
        }
        friend-link a:hover {
            color: #e67e22;
        }
        .back-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #c0392b;
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: 0 4px 16px rgba(192, 57, 43, 0.4);
            transition: background 0.2s ease, transform 0.2s ease;
            z-index: 999;
            border: none;
            cursor: pointer;
        }
        .back-top:hover {
            background: #e67e22;
            transform: translateY(-3px);
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #1a2a3a;
                padding: 0.8rem 0;
                margin-top: 0.8rem;
                border-top: 1px solid #2c3e50;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.6rem 1rem;
                width: 100%;
                border-bottom: 1px solid #2c3e50;
            }
            .main-nav a:last-child {
                border-bottom: none;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .main-content section {
                padding: 1.2rem 1rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
            }
            .search-box {
                flex-direction: column;
            }
            .search-box input {
                min-width: auto;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .header-inner {
                position: relative;
            }
            .breadcrumb-inner {
                font-size: 0.8rem;
            }
            .back-top {
                bottom: 1.2rem;
                right: 1.2rem;
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.4rem;
            }
            .main-content h2 {
                font-size: 1.4rem;
            }
            .main-content h3 {
                font-size: 1.15rem;
            }
            .container {
                padding: 0 0.6rem;
            }
            .main-content section {
                padding: 1rem 0.8rem;
            }
            .sidebar .widget {
                padding: 1rem;
            }
        }
        @media print {
            .site-header,
            .back-top,
            .search-box,
            .comment-area,
            .rating-area,
            .sidebar {
                display: none !important;
            }
            .content-wrapper {
                display: block;
            }
            .main-content section {
                box-shadow: none;
                border: 1px solid #ddd;
                page-break-inside: avoid;
            }
        }