*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f0f2f5;
            color: #2c3e50;
            line-height: 1.75;
        }
        a {
            color: #e67e22;
            text-decoration: none;
        }
        a:hover {
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1a2639, #2c3e50);
            padding: 15px 0;
            color: #fff;
            position: sticky;
            top: 0;
            z-index: 999;
            box-shadow: 0 4px 20px rgba(0, 0, 0, .15);
        }
        .header-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: 1px;
            color: #fff;
            background: linear-gradient(to right, #e67e22, #f1c40f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo span {
            font-size: 1.1rem;
            font-weight: 400;
            -webkit-text-fill-color: #bdc3c7;
        }
        .nav-links {
            display: flex;
            gap: 20px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: #ecf0f1;
            font-weight: 600;
            font-size: .95rem;
            transition: color .3s;
            padding: 6px 10px;
            border-radius: 6px;
        }
        .nav-links a:hover {
            color: #e67e22;
            background: rgba(255, 255, 255, .08);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
        }
        .breadcrumb {
            background: #fff;
            border-bottom: 1px solid #e0e0e0;
            padding: 10px 0;
            font-size: .88rem;
        }
        .breadcrumb-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .breadcrumb-wrap span {
            color: #7f8c8d;
        }
        .breadcrumb-wrap a {
            color: #e67e22;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 30px;
            padding: 30px 0;
        }
        @media(min-width:992px) {
            .content-grid {
                grid-template-columns: 1fr 320px;
            }
        }
        .main-card {
            background: #fff;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, .06);
        }
        .sidebar-card {
            background: #fff;
            border-radius: 12px;
            padding: 22px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, .06);
            margin-bottom: 20px;
        }
        h1 {
            font-size: 2.4rem;
            line-height: 1.3;
            color: #1a2639;
            margin-bottom: 12px;
            font-weight: 800;
        }
        h2 {
            font-size: 1.75rem;
            margin: 40px 0 15px;
            color: #1a2639;
            border-left: 5px solid #e67e22;
            padding-left: 14px;
            font-weight: 700;
        }
        h3 {
            font-size: 1.25rem;
            margin: 26px 0 10px;
            color: #2c3e50;
            font-weight: 600;
        }
        h4 {
            font-size: 1.05rem;
            margin: 18px 0 8px;
            color: #4a6a8a;
            font-weight: 600;
        }
        p {
            margin-bottom: 14px;
        }
        ul,
        ol {
            margin: 0 0 16px 24px;
        }
        li {
            margin-bottom: 6px;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            color: #7f8c8d;
            font-size: .88rem;
            margin-bottom: 20px;
            border-bottom: 1px solid #f0f0f0;
            padding-bottom: 14px;
        }
        .highlight-box {
            background: #fdf6e3;
            border-left: 4px solid #e67e22;
            padding: 18px;
            border-radius: 0 8px 8px 0;
            margin: 22px 0;
        }
        .stat-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }
        .stat-item {
            background: #1a2639;
            color: #fff;
            border-radius: 12px;
            padding: 22px;
            text-align: center;
        }
        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: #e67e22;
            display: block;
        }
        .stat-item .label {
            font-size: .9rem;
            opacity: .85;
        }
        .interview-card {
            background: #f8f9fa;
            border-radius: 12px;
            padding: 22px;
            border: 1px solid #e9ecef;
            margin: 20px 0;
        }
        .interview-card .speaker {
            font-weight: 700;
            color: #1a2639;
        }
        .comment-form textarea {
            width: 100%;
            border: 1px solid #ced4da;
            border-radius: 8px;
            padding: 12px;
            font-size: .95rem;
            min-height: 110px;
            resize: vertical;
        }
        .comment-form input[type="text"],
        .comment-form input[type="email"] {
            width: 100%;
            border: 1px solid #ced4da;
            border-radius: 8px;
            padding: 10px;
            margin-bottom: 12px;
            font-size: .92rem;
        }
        .btn {
            display: inline-block;
            background: #e67e22;
            color: #fff;
            border: none;
            padding: 10px 26px;
            border-radius: 8px;
            font-size: .95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background .3s, transform .2s;
        }
        .btn:hover {
            background: #d35400;
            transform: translateY(-2px);
        }
        .rating-stars {
            font-size: 1.6rem;
            color: #f1c40f;
            letter-spacing: 4px;
            cursor: pointer;
            user-select: none;
        }
        .rating-stars span {
            transition: transform .2s;
            display: inline-block;
        }
        .rating-stars span:hover {
            transform: scale(1.2);
        }
        .footer {
            background: #1a2639;
            color: #bdc3c7;
            padding: 30px 0 10px;
            margin-top: 40px;
        }
        .footer-flex {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 24px;
        }
        friend-link {
            display: block;
            margin: 10px 0;
        }
        friend-link a {
            color: #e67e22;
            margin-right: 18px;
        }
        .copyright {
            text-align: center;
            padding: 18px 0 8px;
            border-top: 1px solid #2c3e50;
            margin-top: 18px;
            font-size: .85rem;
            color: #7f8c8d;
        }
        .search-box {
            display: flex;
            gap: 6px;
        }
        .search-box input {
            flex: 1;
            border: 1px solid #ced4da;
            border-radius: 8px;
            padding: 9px 14px;
            font-size: .9rem;
        }
        .search-box button {
            background: #e67e22;
            border: none;
            border-radius: 8px;
            color: #fff;
            padding: 9px 16px;
            cursor: pointer;
        }
        @media(max-width:768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #1a2639;
                padding: 12px;
                border-radius: 0 0 12px 12px;
            }
            .nav-links.open {
                display: flex;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            .main-card {
                padding: 20px;
            }
        }
        @media(min-width:769px) {
            .nav-links {
                display: flex !important;
            }
        }
        .fa-image-icon {
            margin-right: 5px;
        }
        .toc {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 16px 20px;
            border: 1px solid #e9ecef;
            margin: 20px 0;
        }
        .toc a {
            color: #2c3e50;
        }
        .toc a:hover {
            color: #e67e22;
        }