*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #1a2a3a;
            --primary-light: #2c3e50;
            --accent: #f39c12;
            --accent-hover: #e67e22;
            --bg: #f4f6f9;
            --card-bg: #ffffff;
            --text: #222;
            --text-light: #555;
            --border: #ddd;
            --radius: 12px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --font: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent-hover);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1rem;
        }
        header {
            background: var(--primary);
            color: #fff;
            padding: 1rem 0;
            border-radius: 0 0 var(--radius) var(--radius);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(135deg, var(--accent), #e67e22);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 10px rgba(243, 156, 18, 0.3);
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            -webkit-text-fill-color: #aaa;
            display: block;
            letter-spacing: 0.5px;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        nav a {
            color: #eee;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: all 0.2s;
        }
        nav a:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        .breadcrumb {
            background: var(--card-bg);
            padding: 0.7rem 1.2rem;
            border-radius: var(--radius);
            margin: 1.2rem 0;
            box-shadow: var(--shadow);
            font-size: 0.9rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
        }
        .breadcrumb span {
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--primary-light);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .current {
            color: var(--accent);
            font-weight: 600;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            margin: 2rem 0;
        }
        .main-content {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 2rem 2.2rem;
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
        }
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            margin-bottom: 1rem;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 0.5rem;
            color: var(--primary);
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card ul li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .sidebar-card ul li a {
            color: var(--primary-light);
            font-weight: 500;
        }
        .sidebar-card ul li a:hover {
            color: var(--accent);
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: var(--accent);
        }
        .search-form button {
            background: var(--accent);
            border: none;
            color: #fff;
            padding: 0.7rem 1.4rem;
            border-radius: 30px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: var(--accent-hover);
        }
        .comment-section,
        .rating-section {
            margin-top: 2.5rem;
            padding-top: 2rem;
            border-top: 2px solid #f0f0f0;
        }
        .comment-section h2,
        .rating-section h2 {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-size: 1rem;
            font-family: var(--font);
            resize: vertical;
            min-height: 100px;
            transition: border 0.2s;
        }
        .comment-form textarea:focus {
            border-color: var(--accent);
            outline: none;
        }
        .comment-form .form-row {
            display: flex;
            gap: 1rem;
            margin-top: 0.8rem;
            flex-wrap: wrap;
        }
        .comment-form .form-row input {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
            min-width: 150px;
        }
        .comment-form .form-row input:focus {
            border-color: var(--accent);
        }
        .comment-form .form-row button {
            background: var(--primary);
            border: none;
            color: #fff;
            padding: 0.7rem 2rem;
            border-radius: 30px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .comment-form .form-row button:hover {
            background: var(--primary-light);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 2rem;
            color: #ccc;
            cursor: pointer;
            margin: 0.8rem 0;
        }
        .rating-stars i {
            transition: color 0.2s, transform 0.1s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: var(--accent);
            transform: scale(1.1);
        }
        .rating-stars i.selected {
            color: var(--accent);
        }
        .rating-form button {
            background: var(--accent);
            border: none;
            color: #fff;
            padding: 0.7rem 2rem;
            border-radius: 30px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .rating-form button:hover {
            background: var(--accent-hover);
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 0.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            border-left: 5px solid var(--accent);
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-top: 1.2rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            color: var(--text);
        }
        .lead {
            font-size: 1.2rem;
            color: var(--text-light);
            font-weight: 300;
            line-height: 1.8;
        }
        .highlight-box {
            background: #fef9e7;
            border-left: 5px solid var(--accent);
            padding: 1.2rem 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 1.5rem 0;
        }
        .highlight-box strong {
            color: var(--primary);
        }
        .emoji-big {
            font-size: 1.6rem;
            margin-right: 0.3rem;
        }
        .last-updated {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            margin-bottom: 1.5rem;
        }
        .hero-image {
            margin: 1.8rem 0;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .toc {
            background: #f8f9fa;
            border-radius: var(--radius);
            padding: 1.2rem 1.8rem;
            margin: 1.5rem 0 2rem;
            border: 1px solid #eee;
        }
        .toc summary {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--primary);
            cursor: pointer;
        }
        .toc ol {
            margin-top: 0.8rem;
            padding-left: 1.5rem;
        }
        .toc ol li {
            padding: 0.25rem 0;
        }
        .toc ol li a {
            color: var(--primary-light);
        }
        .toc ol li a:hover {
            color: var(--accent);
        }
        friend-link {
            display: block;
            margin: 1rem 0;
        }
        .friend-links-list {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            list-style: none;
            padding: 0;
        }
        .friend-links-list li a {
            background: #f0f2f5;
            padding: 0.4rem 1.2rem;
            border-radius: 30px;
            color: var(--primary-light);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.2s;
            display: inline-block;
        }
        .friend-links-list li a:hover {
            background: var(--accent);
            color: #fff;
            text-decoration: none;
        }
        footer {
            background: var(--primary);
            color: #ccc;
            padding: 2rem 0;
            border-radius: var(--radius) var(--radius) 0 0;
            margin-top: 3rem;
        }
        footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.5rem;
        }
        footer .footer-col h4 {
            color: #fff;
            margin-bottom: 0.8rem;
            border-left: 3px solid var(--accent);
            padding-left: 0.8rem;
        }
        footer a {
            color: #bbb;
        }
        footer a:hover {
            color: var(--accent);
        }
        footer .copyright {
            margin-top: 2rem;
            padding-top: 1.2rem;
            border-top: 1px solid #333;
            text-align: center;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .main-content {
                padding: 1.5rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .header-inner {
                flex-wrap: wrap;
            }
        }
        @media (max-width: 700px) {
            .hamburger {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--primary-light);
                padding: 1rem 0;
                border-radius: var(--radius);
                margin-top: 0.5rem;
                gap: 0.5rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.6rem 1.5rem;
                border-bottom: none;
                width: 100%;
                text-align: center;
            }
            .nav-menu a:hover {
                border-bottom: none;
                background: rgba(255, 255, 255, 0.05);
            }
            nav {
                flex-wrap: wrap;
                width: 100%;
            }
            .breadcrumb {
                font-size: 0.8rem;
                padding: 0.5rem 1rem;
            }
            .comment-form .form-row {
                flex-direction: column;
            }
            .comment-form .form-row input {
                min-width: auto;
            }
            footer .footer-inner {
                flex-direction: column;
                text-align: center;
            }
            footer .footer-col h4 {
                border-left: none;
                padding-left: 0;
            }
        }
        @media (min-width: 701px) {
            .nav-menu {
                display: flex !important;
            }
            .hamburger {
                display: none !important;
            }
        }
        .btn-icon {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .text-accent {
            color: var(--accent);
        }
        .fw-bold {
            font-weight: 700;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .stat-card {
            background: #f8f9fa;
            padding: 1.2rem;
            border-radius: var(--radius);
            text-align: center;
            border: 1px solid #eee;
        }
        .stat-card .number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .interview-block {
            background: #f0f4f8;
            border-radius: var(--radius);
            padding: 1.2rem 1.5rem;
            margin: 1.2rem 0;
            border-left: 4px solid var(--primary);
        }
        .interview-block .speaker {
            font-weight: 700;
            color: var(--primary);
        }
        .faq-item {
            border-bottom: 1px solid #eee;
            padding: 0.8rem 0;
        }
        .faq-item summary {
            font-weight: 600;
            cursor: pointer;
            color: var(--primary-light);
        }
        .faq-item p {
            margin-top: 0.5rem;
            padding-left: 1.2rem;
        }