* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f8fafc;
            color: #1e293b;
            line-height: 1.7;
            font-size: 16px;
            scroll-behavior: smooth;
        }
        a {
            color: #e63946;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #b71c1c;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            color: #fff;
            padding: 18px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f97316, #e63946);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 12px rgba(249, 115, 22, 0.3);
            display: inline-block;
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            -webkit-text-fill-color: #94a3b8;
            background: none;
            letter-spacing: 0;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            gap: 12px;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-menu a {
            color: #e2e8f0;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 30px;
            transition: all 0.25s;
            font-size: 0.95rem;
        }
        .nav-menu a:hover {
            background: rgba(249, 115, 22, 0.2);
            color: #f97316;
        }
        .nav-menu .active {
            background: #f97316;
            color: #fff;
        }
        .breadcrumb {
            background: #f1f5f9;
            padding: 10px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #e2e8f0;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 10px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #94a3b8;
        }
        .breadcrumb a {
            color: #e63946;
        }
        .breadcrumb .current {
            color: #64748b;
            font-weight: 500;
        }
        main {
            padding: 40px 0 60px;
        }
        h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 10px;
            background: linear-gradient(135deg, #1e293b, #e63946);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 48px 0 18px;
            color: #0f172a;
            border-left: 6px solid #f97316;
            padding-left: 18px;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 32px 0 12px;
            color: #1e293b;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 22px 0 8px;
            color: #334155;
        }
        p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #334155;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 0.95rem;
            color: #64748b;
            margin-bottom: 28px;
            border-bottom: 1px solid #e2e8f0;
            padding-bottom: 18px;
        }
        .meta-info i {
            margin-right: 6px;
            color: #f97316;
        }
        .featured-img {
            margin: 24px 0 32px;
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
        }
        .highlight-box {
            background: linear-gradient(135deg, #fff7ed, #ffedd5);
            border-left: 6px solid #f97316;
            padding: 20px 26px;
            border-radius: 12px;
            margin: 24px 0;
            font-weight: 500;
        }
        .highlight-box i {
            color: #f97316;
            margin-right: 10px;
        }
        .link-list-inline {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            background: #f1f5f9;
            padding: 14px 20px;
            border-radius: 12px;
            margin: 20px 0;
            list-style: none;
        }
        .link-list-inline li a {
            font-weight: 500;
        }
        .link-list-inline li a::before {
            content: "🔗 ";
            font-size: 0.85rem;
        }
        .pro-tip {
            background: #f0fdf4;
            border-left: 6px solid #22c55e;
            padding: 16px 22px;
            border-radius: 12px;
            margin: 20px 0;
        }
        .pro-tip i {
            color: #22c55e;
            margin-right: 10px;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin: 30px 0;
        }
        .card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            transition: transform 0.25s, box-shadow 0.25s;
            border: 1px solid #e2e8f0;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.1);
        }
        .card i {
            font-size: 2.2rem;
            color: #f97316;
            margin-bottom: 12px;
        }
        .card h4 {
            margin-top: 0;
        }
        .stats-table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.98rem;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
        }
        .stats-table th {
            background: #1e293b;
            color: #fff;
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
        }
        .stats-table td {
            padding: 12px 18px;
            border-bottom: 1px solid #e2e8f0;
        }
        .stats-table tr:last-child td {
            border-bottom: none;
        }
        .stats-table tr:hover td {
            background: #f8fafc;
        }
        .comment-section,
        .rating-section {
            background: #fff;
            border-radius: 16px;
            padding: 28px 30px;
            margin: 32px 0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #e2e8f0;
        }
        .comment-section h3,
        .rating-section h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 6px;
            color: #1e293b;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            transition: border 0.2s;
            background: #f8fafc;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #f97316;
            outline: none;
            background: #fff;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: linear-gradient(135deg, #f97316, #e63946);
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: 30px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
        }
        .btn-secondary {
            background: #1e293b;
        }
        .btn-secondary:hover {
            background: #0f172a;
            box-shadow: 0 8px 24px rgba(30, 41, 59, 0.3);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 2rem;
            color: #d1d5db;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #f59e0b;
        }
        .rating-value {
            font-weight: 700;
            font-size: 1.3rem;
            color: #f59e0b;
            margin-left: 12px;
        }
        footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
        }
        footer h4 {
            color: #f1f5f9;
            margin-bottom: 14px;
        }
        footer a {
            color: #94a3b8;
        }
        footer a:hover {
            color: #f97316;
        }
        footer .friend-links {
            grid-column: 1 / -1;
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            margin-top: 12px;
        }
        footer .friend-links h4 {
            margin-bottom: 12px;
        }
        footer .friend-links ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 10px 24px;
        }
        footer .friend-links ul li a {
            font-size: 0.95rem;
        }
        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #1e293b;
            font-size: 0.9rem;
            color: #64748b;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                padding-top: 16px;
                gap: 6px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                width: 100%;
                padding: 10px 16px;
                border-radius: 8px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            footer .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .meta-info {
                flex-direction: column;
                gap: 6px;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .comment-section,
            .rating-section {
                padding: 18px 16px;
            }
            .stats-table {
                font-size: 0.85rem;
            }
            .stats-table th,
            .stats-table td {
                padding: 10px 12px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            h1 {
                font-size: 1.7rem;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .star-rating {
                font-size: 1.6rem;
            }
        }
        .search-form {
            display: flex;
            gap: 10px;
            margin: 18px 0 28px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 180px;
            padding: 12px 18px;
            border: 2px solid #e2e8f0;
            border-radius: 30px;
            font-size: 1rem;
            background: #fff;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: #f97316;
            outline: none;
        }
        .search-form button {
            border-radius: 30px;
            padding: 12px 28px;
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #f97316;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.35);
            cursor: pointer;
            transition: transform 0.2s, opacity 0.2s;
            border: none;
            opacity: 0.8;
            z-index: 50;
        }
        .scroll-top:hover {
            transform: scale(1.08);
            opacity: 1;
        }
        @media (max-width: 600px) {
            .scroll-top {
                bottom: 16px;
                right: 16px;
                width: 42px;
                height: 42px;
                font-size: 1.2rem;
            }
        }
        .table-of-contents {
            background: #f1f5f9;
            border-radius: 16px;
            padding: 24px 28px;
            margin: 28px 0;
            border: 1px solid #e2e8f0;
        }
        .table-of-contents ol {
            padding-left: 24px;
            columns: 2;
            column-gap: 32px;
        }
        .table-of-contents ol li {
            margin-bottom: 6px;
            break-inside: avoid;
        }
        .table-of-contents ol li a {
            font-weight: 500;
        }
        @media (max-width: 600px) {
            .table-of-contents ol {
                columns: 1;
            }
        }
        .interview-block {
            background: #fef3c7;
            border-radius: 16px;
            padding: 24px 28px;
            margin: 28px 0;
            border-left: 6px solid #f59e0b;
        }
        .interview-block i {
            color: #f59e0b;
            margin-right: 8px;
        }
        .data-point {
            font-weight: 700;
            color: #e63946;
        }
        .badge {
            display: inline-block;
            background: #f97316;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 30px;
            letter-spacing: 0.3px;
        }
        .section-number {
            display: inline-block;
            background: #1e293b;
            color: #fff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            text-align: center;
            line-height: 32px;
            font-size: 0.9rem;
            font-weight: 700;
            margin-right: 10px;
        }