*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #ff6a00;
            --primary-dark: #cc5500;
            --secondary: #0d0d2b;
            --accent: #00e5ff;
            --bg-body: #f4f7fc;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-mid: #2d2d44;
            --text-light: #555577;
            --border-light: #e0e4eb;
            --shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
            --radius: 16px;
            --radius-sm: 10px;
            --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg-body);
            color: var(--text-dark);
            line-height: 1.7;
            padding: 0 0 0 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--secondary);
            color: #fff;
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 18px 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;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            text-shadow: 0 0 18px rgba(255, 106, 0, 0.25);
            transition: transform var(--transition);
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: rgba(255, 255, 255, 0.5);
            display: block;
            font-weight: 400;
            letter-spacing: 0.5px;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-list li a {
            color: #eee;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background var(--transition), color var(--transition);
            display: block;
        }
        .nav-list li a:hover {
            background: var(--primary);
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-size: 1.5rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: border-color var(--transition);
        }
        .hamburger:hover {
            border-color: var(--primary);
        }
        .breadcrumb {
            background: rgba(255, 255, 255, 0.06);
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.8rem;
            color: #aaa;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            margin-top: 6px;
            width: 100%;
        }
        .breadcrumb a {
            color: var(--accent);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb span {
            color: #888;
        }
        main {
            flex: 1;
            padding: 30px 0 50px;
        }
        article {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 35px;
            margin-bottom: 40px;
        }
        article h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--secondary);
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .last-updated {
            display: inline-block;
            font-size: 0.85rem;
            color: var(--text-light);
            background: #f0f2f5;
            padding: 4px 16px;
            border-radius: 40px;
            margin-bottom: 25px;
        }
        .last-updated i {
            margin-right: 6px;
            color: var(--primary);
        }
        article h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--secondary);
            margin-top: 48px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 4px solid var(--primary);
            display: inline-block;
        }
        article h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--text-mid);
            margin-top: 32px;
            margin-bottom: 10px;
        }
        article h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-mid);
            margin-top: 22px;
            margin-bottom: 8px;
        }
        article p {
            margin-bottom: 18px;
            color: var(--text-mid);
            font-size: 1.02rem;
        }
        article ul,
        article ol {
            margin: 10px 0 20px 28px;
            color: var(--text-mid);
        }
        article li {
            margin-bottom: 8px;
        }
        article .highlight-box {
            background: #fef6ee;
            border-left: 6px solid var(--primary);
            padding: 20px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
        }
        article .highlight-box p {
            margin-bottom: 4px;
        }
        .feature-img {
            margin: 28px 0 20px;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .gadget-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
            margin: 28px 0;
        }
        .gadget-card {
            background: #fafcff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 22px 18px;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .gadget-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.08);
        }
        .gadget-card i {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .gadget-card h4 {
            margin-top: 0;
            font-size: 1.2rem;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.95rem;
        }
        .data-table th {
            background: var(--secondary);
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-light);
        }
        .data-table tr:hover td {
            background: #f8faff;
        }
        .data-table th:first-child {
            border-radius: 8px 0 0 0;
        }
        .data-table th:last-child {
            border-radius: 0 8px 0 0;
        }
        .interview-block {
            background: #f0f5ff;
            border-radius: var(--radius-sm);
            padding: 24px 28px;
            margin: 28px 0;
            border: 1px solid #d6e4ff;
        }
        .interview-block .quote {
            font-style: italic;
            font-size: 1.05rem;
            color: var(--text-mid);
            border-left: 4px solid var(--accent);
            padding-left: 20px;
            margin: 12px 0;
        }
        .interview-block .attribution {
            font-weight: 600;
            color: var(--secondary);
            margin-top: 8px;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 48px;
            padding-top: 36px;
            border-top: 2px dashed var(--border-light);
        }
        .form-card {
            background: #fafcff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 26px 24px;
            transition: box-shadow var(--transition);
        }
        .form-card:hover {
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
        }
        .form-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .form-card h3 i {
            color: var(--primary);
        }
        .form-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 16px;
        }
        .form-card input,
        .form-card textarea,
        .form-card select {
            padding: 12px 16px;
            border: 1.5px solid var(--border-light);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: var(--font-main);
            transition: border-color var(--transition);
            background: #fff;
            width: 100%;
        }
        .form-card input:focus,
        .form-card textarea:focus,
        .form-card select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 106, 0, 0.1);
        }
        .form-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .form-card .btn {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 24px;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
            align-self: flex-start;
        }
        .form-card .btn:hover {
            background: var(--primary-dark);
            transform: scale(1.02);
        }
        .form-card .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #ddd;
            cursor: pointer;
            direction: rtl;
        }
        .form-card .rating-stars i {
            transition: color var(--transition);
        }
        .form-card .rating-stars i.active,
        .form-card .rating-stars i:hover,
        .form-card .rating-stars i:hover~i {
            color: #ffb400;
        }
        .form-card .rating-stars i:hover {
            transform: scale(1.15);
        }
        .related-links {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 30px;
            margin-bottom: 40px;
        }
        .related-links h2 {
            font-size: 1.4rem;
            margin-bottom: 16px;
            color: var(--secondary);
        }
        .related-links ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 12px;
        }
        .related-links ul li a {
            display: block;
            padding: 10px 16px;
            background: #f4f7fc;
            border-radius: 8px;
            transition: background var(--transition), color var(--transition);
            font-size: 0.95rem;
        }
        .related-links ul li a:hover {
            background: var(--primary);
            color: #fff;
            text-decoration: none;
        }
        footer {
            background: var(--secondary);
            color: #ccc;
            padding: 40px 0 20px;
            margin-top: 20px;
        }
        footer .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        footer h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        footer a {
            color: #bbb;
        }
        footer a:hover {
            color: var(--primary);
        }
        footer .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 18px;
            margin-top: 18px;
            text-align: center;
            font-size: 0.9rem;
            color: #888;
        }
        friend-link {
            display: block;
            margin-top: 8px;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 0;
            padding: 4px 12px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 30px;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            background: rgba(255, 106, 0, 0.2);
        }
        @media (max-width: 992px) {
            article {
                padding: 30px 22px;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
            footer .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            article h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(13, 13, 43, 0.98);
                padding: 14px 0;
                border-radius: 0 0 16px 16px;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                gap: 2px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li a {
                padding: 12px 24px;
                border-radius: 0;
                font-size: 1rem;
            }
            .hamburger {
                display: block;
            }
            .header-inner {
                position: relative;
            }
            .breadcrumb {
                font-size: 0.7rem;
                padding: 6px 12px;
                overflow-x: auto;
                white-space: nowrap;
            }
            article h1 {
                font-size: 1.7rem;
            }
            article h2 {
                font-size: 1.4rem;
            }
            article h3 {
                font-size: 1.15rem;
            }
            article {
                padding: 20px 16px;
            }
            .gadget-grid {
                grid-template-columns: 1fr 1fr;
            }
            .data-table {
                font-size: 0.8rem;
            }
            .data-table th,
            .data-table td {
                padding: 8px 10px;
            }
            footer .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .related-links ul {
                grid-template-columns: 1fr 1fr;
            }
            .form-card {
                padding: 18px 16px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .gadget-grid {
                grid-template-columns: 1fr;
            }
            .related-links ul {
                grid-template-columns: 1fr;
            }
            .container {
                padding: 0 12px;
            }
            article h1 {
                font-size: 1.4rem;
            }
            .form-card .rating-stars {
                font-size: 1.3rem;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--primary);
            color: #fff;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 6px 20px rgba(255, 106, 0, 0.35);
            cursor: pointer;
            transition: transform var(--transition), background var(--transition);
            z-index: 99;
            border: none;
        }
        .scroll-top:hover {
            transform: translateY(-4px);
            background: var(--primary-dark);
        }
        @media (max-width: 480px) {
            .scroll-top {
                width: 42px;
                height: 42px;
                font-size: 1.1rem;
                bottom: 18px;
                right: 18px;
            }
        }
        .schema-hidden {
            display: none;
        }