*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f4f7f6;
            color: #1e2a3a;
            line-height: 1.8;
            font-size: 16px;
        }
        a {
            color: #1a6b4a;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #f5b041;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0f3b2c, #1a6b4a);
            color: #fff;
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .my-logo {
            font-size: 28px;
            font-weight: 900;
            letter-spacing: 2px;
            color: #f5c842;
            text-shadow: 2px 2px 0 #0a2a1e;
            transition: transform 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            font-size: 32px;
            color: #f5c842;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #f5c842;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 28px;
            cursor: pointer;
            padding: 4px 8px;
        }
        nav {
            display: flex;
            gap: 18px;
            align-items: center;
            flex-wrap: wrap;
        }
        nav a {
            color: #e8f5e9;
            font-weight: 500;
            padding: 6px 12px;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
            font-size: 15px;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #f5c842;
            text-decoration: none;
        }
        nav a i {
            margin-right: 6px;
        }
        .breadcrumb {
            background: #eaf5f0;
            padding: 10px 20px;
            font-size: 14px;
            border-bottom: 1px solid #c8e0d4;
            max-width: 1200px;
            margin: 0 auto;
            border-radius: 0 0 12px 12px;
        }
        .breadcrumb a {
            color: #1a6b4a;
        }
        .breadcrumb a:hover {
            color: #f5b041;
        }
        .breadcrumb span {
            color: #4a6a5a;
        }
        main {
            padding: 30px 0 50px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-body h1 {
            font-size: 36px;
            color: #0f3b2c;
            margin-bottom: 12px;
            line-height: 1.3;
            border-left: 6px solid #f5c842;
            padding-left: 18px;
        }
        .article-body .meta {
            color: #4a6a5a;
            font-size: 14px;
            margin-bottom: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .article-body .meta i {
            margin-right: 6px;
            color: #f5b041;
        }
        .article-body h2 {
            font-size: 28px;
            color: #0f3b2c;
            margin-top: 44px;
            margin-bottom: 16px;
            border-bottom: 3px solid #f5c842;
            padding-bottom: 6px;
        }
        .article-body h3 {
            font-size: 22px;
            color: #1a6b4a;
            margin-top: 32px;
            margin-bottom: 10px;
        }
        .article-body h4 {
            font-size: 18px;
            color: #2d4a3a;
            margin-top: 22px;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .article-body p {
            margin-bottom: 18px;
            text-align: justify;
        }
        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px 28px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body .highlight-box {
            background: #eaf5f0;
            border-left: 6px solid #f5c842;
            padding: 18px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .article-body .highlight-box strong {
            color: #0f3b2c;
        }
        .article-body .feature-img {
            margin: 28px 0;
            border-radius: 14px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
        }
        .sidebar {
            background: #ffffff;
            border-radius: 16px;
            padding: 24px 20px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 90px;
            height: fit-content;
            max-height: calc(100vh - 110px);
            overflow-y: auto;
        }
        .sidebar h3 {
            font-size: 20px;
            color: #0f3b2c;
            margin-bottom: 16px;
            border-bottom: 2px solid #f5c842;
            padding-bottom: 6px;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar ul li {
            margin-bottom: 10px;
        }
        .sidebar ul li a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 8px;
            border-radius: 6px;
            transition: background 0.2s;
            font-size: 14px;
        }
        .sidebar ul li a:hover {
            background: #eaf5f0;
            text-decoration: none;
        }
        .sidebar ul li a i {
            color: #f5b041;
            width: 18px;
            text-align: center;
        }
        .search-box {
            background: #fff;
            border-radius: 12px;
            padding: 20px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            margin-bottom: 32px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }
        .search-box input {
            flex: 1;
            min-width: 180px;
            padding: 12px 18px;
            border: 2px solid #d0e0d8;
            border-radius: 8px;
            font-size: 16px;
            outline: none;
            transition: border 0.2s;
        }
        .search-box input:focus {
            border-color: #1a6b4a;
        }
        .search-box button {
            background: #1a6b4a;
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 16px;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-box button:hover {
            background: #0f3b2c;
            transform: scale(1.02);
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 40px 0;
        }
        .comment-box,
        .rating-box {
            background: #fff;
            border-radius: 16px;
            padding: 24px 28px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }
        .comment-box h3,
        .rating-box h3 {
            font-size: 22px;
            color: #0f3b2c;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .comment-box textarea {
            width: 100%;
            padding: 14px 16px;
            border: 2px solid #d0e0d8;
            border-radius: 8px;
            font-size: 15px;
            resize: vertical;
            min-height: 100px;
            outline: none;
            transition: border 0.2s;
            font-family: inherit;
        }
        .comment-box textarea:focus {
            border-color: #1a6b4a;
        }
        .comment-box input[type="text"] {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #d0e0d8;
            border-radius: 8px;
            font-size: 15px;
            outline: none;
            transition: border 0.2s;
            margin: 10px 0;
        }
        .comment-box input:focus {
            border-color: #1a6b4a;
        }
        .comment-box button,
        .rating-box button {
            background: #1a6b4a;
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 16px;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 10px;
        }
        .comment-box button:hover,
        .rating-box button:hover {
            background: #0f3b2c;
        }
        .rating-stars {
            display: flex;
            gap: 8px;
            font-size: 32px;
            color: #d0e0d8;
            cursor: pointer;
            margin: 12px 0;
        }
        .rating-stars i {
            transition: color 0.2s, transform 0.1s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #f5c842;
            transform: scale(1.1);
        }
        footer {
            background: #0f3b2c;
            color: #d0e0d8;
            padding: 36px 0 20px;
            margin-top: 50px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
        }
        footer h4 {
            color: #f5c842;
            font-size: 18px;
            margin-bottom: 12px;
        }
        .friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            margin-top: 8px;
        }
        .friend-link a {
            color: #b8d4c8;
            font-size: 14px;
            transition: color 0.2s;
        }
        .friend-link a:hover {
            color: #f5c842;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 24px;
            margin-top: 24px;
            border-top: 1px solid #2a5a4a;
            font-size: 14px;
            color: #8aaea0;
            grid-column: 1 / -1;
        }
        .copyright strong {
            color: #f5c842;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                max-height: none;
                margin-top: 30px;
            }
            .feedback-section {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 700px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 6px;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 10px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 10px 12px;
                width: 100%;
                border-radius: 6px;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 22px;
            }
            .article-body h1 {
                font-size: 26px;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .search-box {
                flex-direction: column;
            }
            .search-box button {
                width: 100%;
                justify-content: center;
            }
            .rating-stars {
                font-size: 28px;
            }
            .breadcrumb {
                font-size: 12px;
                padding: 8px 16px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .article-body h1 {
                font-size: 22px;
                padding-left: 12px;
            }
            .article-body h2 {
                font-size: 19px;
            }
            .article-body h3 {
                font-size: 16px;
            }
            .comment-box,
            .rating-box {
                padding: 16px 18px;
            }
        }
        html {
            scroll-behavior: smooth;
        }
        .article-body .emoji {
            font-size: 1.2em;
            margin-right: 4px;
        }
        .article-body strong {
            color: #0f3b2c;
        }
        .article-body .fa-ul {
            margin-left: 30px;
        }
        .article-body .fa-ul li {
            margin-bottom: 6px;
        }