*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f0f2f5;
            color: #1a1a2e;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        :root {
            --primary: #2d1b69;
            --primary-light: #4a2d8a;
            --secondary: #ff6b35;
            --accent: #00c9b7;
            --accent-glow: #00f0d0;
            --dark: #0d0d1a;
            --light: #f8f9fe;
            --card: #ffffff;
            --border: #e0e3ed;
            --text: #1a1a2e;
            --text-light: #5a5a7a;
            --shadow: 0 8px 32px rgba(45, 27, 105, 0.10);
            --radius: 16px;
            --radius-sm: 8px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--dark);
            letter-spacing: -0.01em;
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            margin-bottom: 0.5rem;
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            border-left: 5px solid var(--secondary);
            padding-left: 1rem;
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.6rem);
            margin-top: 2rem;
            margin-bottom: 0.75rem;
        }
        h4 {
            font-size: clamp(1.05rem, 1.8vw, 1.25rem);
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
            color: var(--primary-light);
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        strong,
        b {
            color: var(--primary);
            font-weight: 700;
        }
        em {
            color: var(--secondary);
            font-style: italic;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        .site-header {
            background: var(--dark);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            backdrop-filter: blur(12px);
            background: rgba(13, 13, 26, 0.96);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            text-decoration: none;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            letter-spacing: -0.02em;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: var(--accent);
            transform: scale(1.02);
        }
        .my-logo i {
            color: var(--secondary);
            font-size: 1.4rem;
        }
        .my-logo span {
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #ccc;
            text-decoration: none;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: #fff;
            background: rgba(255, 107, 53, 0.2);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--secondary);
            border-radius: 4px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 6px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: #fff;
            border-radius: 6px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }
        .breadcrumb {
            background: var(--light);
            padding: 0.7rem 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            align-items: center;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--text-light);
        }
        .breadcrumb li+li::before {
            content: '/';
            color: #aaa;
            margin-right: 0.4rem;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--secondary);
        }
        .breadcrumb li:last-child {
            color: var(--text);
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, #1a0a3e 60%, var(--dark) 100%);
            color: #fff;
            padding: 3rem 0 4rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 40%, rgba(0, 201, 183, 0.08) 0%, transparent 50%);
            pointer-events: none;
        }
        .hero h1 {
            color: #fff;
            font-size: clamp(2.4rem, 6vw, 4rem);
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }
        .hero h1 i {
            color: var(--secondary);
            margin-right: 0.3rem;
        }
        .hero p {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            max-width: 720px;
            margin: 1rem auto 0;
            opacity: 0.9;
            color: #ddd;
        }
        .hero-badge {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            padding: 0.3rem 1.4rem;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 1rem;
            text-transform: uppercase;
        }
        .main-content {
            background: var(--light);
            padding: 2.5rem 0 4rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        .content-body {
            background: var(--card);
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .content-body img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-sm);
            margin: 1.5rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            display: block;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: var(--card);
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-bottom: 1.5rem;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-top: 0;
            margin-bottom: 1rem;
            border-bottom: 2px solid var(--border);
            padding-bottom: 0.6rem;
        }
        .sidebar-link-list {
            list-style: none;
        }
        .sidebar-link-list li {
            margin-bottom: 0.5rem;
        }
        .sidebar-link-list a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.5rem 0.7rem;
            background: var(--light);
            border-radius: var(--radius-sm);
            text-decoration: none;
            color: var(--text);
            font-size: 0.95rem;
            transition: var(--transition);
            border-left: 3px solid transparent;
        }
        .sidebar-link-list a:hover {
            background: var(--primary);
            color: #fff;
            border-left-color: var(--secondary);
            transform: translateX(4px);
        }
        .sidebar-link-list a i {
            color: var(--secondary);
            width: 18px;
            text-align: center;
        }
        .sidebar-link-list a:hover i {
            color: var(--accent);
        }
        .search-box {
            display: flex;
            gap: 0.5rem;
            margin: 1.2rem 0;
        }
        .search-box input {
            flex: 1;
            padding: 0.7rem 1.2rem;
            border: 2px solid var(--border);
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
            background: var(--light);
        }
        .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(45, 27, 105, 0.08);
        }
        .search-box button {
            padding: 0.7rem 1.6rem;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-box button:hover {
            background: var(--primary-light);
            transform: scale(1.02);
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 2.5rem 0 1.5rem;
            padding-top: 1.5rem;
            border-top: 2px solid var(--border);
        }
        .feedback-card {
            background: var(--light);
            padding: 1.5rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 0.6rem 1rem;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-family: inherit;
            transition: var(--transition);
            background: #fff;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(45, 27, 105, 0.06);
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            padding: 0.6rem 1.4rem;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .feedback-card .btn-submit:hover {
            background: var(--secondary);
            transform: translateY(-2px);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.6rem;
            color: #ccc;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5b342;
            transform: scale(1.1);
        }
        .site-footer {
            background: var(--dark);
            color: #bbb;
            padding: 2.5rem 0 1.5rem;
            border-top: 3px solid var(--primary-light);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-col h4 {
            color: #fff;
            margin-top: 0;
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }
        .footer-col p,
        .footer-col a {
            font-size: 0.95rem;
            color: #aaa;
            text-decoration: none;
            display: block;
            margin-bottom: 0.4rem;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        friend-link {
            display: block;
            padding: 1rem 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 1rem;
        }
        friend-link a {
            color: var(--accent);
            text-decoration: none;
            margin: 0 0.8rem 0.3rem 0;
            display: inline-block;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.85rem;
            color: #888;
        }
        .copyright strong {
            color: #ddd;
        }
        .last-updated {
            display: inline-block;
            background: rgba(0, 201, 183, 0.12);
            color: var(--accent);
            padding: 0.2rem 1rem;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-top: 0.5rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .hamburger {
                display: flex;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.3rem;
                padding: 1rem 0 0.5rem;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                margin-top: 0.5rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                padding: 0.6rem 1rem;
                border-radius: var(--radius-sm);
            }
            .content-body {
                padding: 1.5rem;
            }
            .feedback-section {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .hero {
                padding: 2rem 0 2.5rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 1rem;
            }
            .content-body {
                padding: 1rem;
            }
            .search-box {
                flex-direction: column;
            }
            .search-box button {
                width: 100%;
                justify-content: center;
            }
            .feedback-card {
                padding: 1rem;
            }
        }
        .text-accent {
            color: var(--secondary);
        }
        .text-glow {
            color: var(--accent);
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .divider {
            border: none;
            height: 2px;
            background: linear-gradient(to right, var(--border), transparent);
            margin: 2rem 0;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .data-table th {
            background: var(--primary);
            color: #fff;
            padding: 0.7rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 0.6rem 1rem;
            border-bottom: 1px solid var(--border);
            background: var(--light);
        }
        .data-table tr:hover td {
            background: #eef0f8;
        }
        .highlight-box {
            background: linear-gradient(135deg, #f0f4ff, #e8faf8);
            border-left: 5px solid var(--accent);
            padding: 1.2rem 1.5rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
        }
        .highlight-box strong {
            color: var(--primary);
        }
        .tip-box {
            background: #fff8e6;
            border-left: 5px solid var(--secondary);
            padding: 1.2rem 1.5rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
        }
        .anchor-link {
            scroll-margin-top: 80px;
        }