*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #1a1a2e;
            --secondary: #e94560;
            --accent: #0f3460;
            --gold: #f5c518;
            --light: #f0f0f0;
            --text: #222;
            --bg: #fafafa;
            --card-bg: #ffffff;
            --radius: 12px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --transition: 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: #c0392b;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--primary);
            color: #fff;
            padding: 16px 0;
            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;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--gold);
            letter-spacing: 1px;
            text-transform: uppercase;
            background: linear-gradient(135deg, #f5c518, #e94560);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            transition: transform var(--transition);
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-list {
            list-style: none;
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
        }
        .nav-list li a {
            color: #eee;
            font-weight: 500;
            padding: 6px 12px;
            border-radius: 6px;
            transition: background var(--transition), color var(--transition);
            font-size: 0.95rem;
        }
        .nav-list li a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--gold);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: #fff;
            cursor: pointer;
            background: none;
            border: none;
            padding: 4px 8px;
            transition: color var(--transition);
        }
        .hamburger:hover {
            color: var(--gold);
        }
        .nav-mobile {
            display: none;
            width: 100%;
            background: var(--primary);
            padding: 12px 0 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-mobile.active {
            display: block;
        }
        .nav-mobile .nav-list {
            flex-direction: column;
            gap: 6px;
        }
        .nav-mobile .nav-list li a {
            display: block;
            padding: 10px 16px;
            font-size: 1.1rem;
        }
        .breadcrumb {
            background: #e9ecef;
            padding: 10px 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            align-items: center;
        }
        .breadcrumb ol li+li::before {
            content: "›";
            margin-right: 10px;
            color: #888;
        }
        .breadcrumb a {
            color: var(--accent);
        }
        .breadcrumb .active {
            color: #666;
            font-weight: 600;
        }
        main {
            padding: 40px 0 60px;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 0.5rem;
            line-height: 1.2;
        }
        h1 .highlight {
            color: var(--secondary);
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            border-left: 5px solid var(--secondary);
            padding-left: 16px;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--accent);
            margin-top: 2rem;
            margin-bottom: 0.7rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #2c3e50;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .content-section {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px 36px;
            box-shadow: var(--shadow);
            margin-bottom: 32px;
        }
        .content-section p:last-child {
            margin-bottom: 0;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            font-size: 0.95rem;
            color: #666;
            margin: 16px 0 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid #e0e0e0;
        }
        .meta-info i {
            margin-right: 6px;
            color: var(--secondary);
        }
        .last-updated {
            font-weight: 600;
            color: var(--accent);
        }
        .featured-image {
            margin: 24px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .featured-image figcaption {
            background: var(--primary);
            color: #ddd;
            padding: 10px 18px;
            font-size: 0.9rem;
            font-style: italic;
        }
        .linked-terms {
            display: inline;
        }
        .linked-terms a {
            font-weight: 500;
        }
        .search-section {
            background: var(--primary);
            color: #fff;
            padding: 28px 32px;
            border-radius: var(--radius);
            margin-bottom: 32px;
        }
        .search-section h3 {
            color: var(--gold);
            margin-top: 0;
            border: none;
            padding: 0;
        }
        .search-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 12px;
        }
        .search-form input[type="text"] {
            flex: 1 1 260px;
            padding: 14px 18px;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            background: #fff;
            color: #222;
            outline: none;
            transition: box-shadow var(--transition);
        }
        .search-form input[type="text"]:focus {
            box-shadow: 0 0 0 3px rgba(245, 197, 24, 0.5);
        }
        .search-form button {
            padding: 14px 32px;
            background: var(--gold);
            color: var(--primary);
            font-weight: 700;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }
        .search-form button:hover {
            background: #e0b014;
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 32px 0;
        }
        .feedback-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow);
        }
        .feedback-card h3 {
            margin-top: 0;
            border: none;
            padding: 0;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card h3 i {
            color: var(--secondary);
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 12px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 12px 16px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
            transition: border-color var(--transition), box-shadow var(--transition);
            background: #f9f9f9;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.15);
            outline: none;
            background: #fff;
        }
        .feedback-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: var(--secondary);
            color: #fff;
            font-weight: 700;
            padding: 14px 28px;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
            align-self: flex-start;
        }
        .feedback-card .btn-submit:hover {
            background: #c0392b;
            transform: scale(1.02);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            direction: rtl;
        }
        .rating-stars i {
            transition: color var(--transition), transform var(--transition);
        }
        .rating-stars i:hover,
        .rating-stars i:hover~i {
            color: var(--gold);
            transform: scale(1.1);
        }
        .rating-stars i.active {
            color: var(--gold);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.98rem;
            border-radius: 8px;
            overflow: hidden;
        }
        .data-table thead {
            background: var(--primary);
            color: #fff;
        }
        .data-table th,
        .data-table td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid #e0e0e0;
        }
        .data-table tbody tr:hover {
            background: #f5f5f5;
        }
        .data-table tbody tr:nth-child(even) {
            background: #fafafa;
        }
        friend-link {
            display: block;
            background: var(--primary);
            color: #ddd;
            padding: 24px 28px;
            border-radius: var(--radius);
            margin-top: 32px;
            font-size: 1rem;
        }
        friend-link a {
            color: var(--gold);
            margin: 0 8px;
            font-weight: 500;
        }
        friend-link a:hover {
            color: #fff;
            text-decoration: underline;
        }
        footer {
            background: #0d0d1a;
            color: #aaa;
            padding: 32px 0 28px;
            text-align: center;
            font-size: 0.95rem;
            border-top: 3px solid var(--secondary);
        }
        footer .copyright {
            margin-top: 12px;
            color: #888;
        }
        footer .copyright i {
            color: var(--secondary);
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .content-section {
                padding: 20px 18px;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-list {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .search-section {
                padding: 20px 18px;
            }
            .data-table {
                font-size: 0.85rem;
            }
            .data-table th,
            .data-table td {
                padding: 10px 12px;
            }
            .meta-info {
                flex-direction: column;
                gap: 6px;
            }
            friend-link {
                padding: 18px 16px;
                font-size: 0.9rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            h1 {
                font-size: 1.6rem;
            }
            .feedback-card {
                padding: 16px 14px;
            }
            .search-form input[type="text"] {
                flex: 1 1 100%;
            }
            .search-form button {
                width: 100%;
            }
            .rating-stars {
                font-size: 1.5rem;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--secondary);
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
            opacity: 0;
            visibility: hidden;
            transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
            cursor: pointer;
            z-index: 999;
            border: none;
        }
        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .scroll-top:hover {
            transform: scale(1.08);
            background: #c0392b;
        }
        .fade-in {
            animation: fadeIn 0.6s ease forwards;
        }
        @keyframes fadeIn {
            0% {
                opacity: 0;
                transform: translateY(10px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }
        blockquote {
            border-left: 4px solid var(--gold);
            background: #f9f3e0;
            padding: 18px 24px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: #444;
        }
        blockquote strong {
            color: var(--primary);
        }
        .term-highlight {
            background: #fff3cd;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.6rem;
            margin-right: 6px;
        }