* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f5f7fa;
            color: #1e2a3a;
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: #0077b6;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #023e8a;
            text-decoration: underline;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0b1a2e 0%, #1a3a5c 100%);
            color: #fff;
            padding: 18px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 26px;
            font-weight: 800;
            letter-spacing: 1px;
            color: #f9c74f;
            text-shadow: 2px 2px 0 #1a3a5c;
            background: rgba(255, 255, 255, 0.05);
            padding: 4px 16px;
            border-radius: 30px;
            transition: 0.3s;
            display: inline-block;
        }
        .my-logo:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: scale(1.02);
            text-decoration: none;
            color: #ffd966;
        }
        .my-logo small {
            font-size: 14px;
            font-weight: 400;
            color: #aad0f5;
            margin-left: 6px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            font-size: 24px;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        nav {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            color: #e0f0ff;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            transition: 0.2s;
            white-space: nowrap;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #ffd966;
            text-decoration: none;
        }
        nav a i {
            margin-right: 6px;
            font-size: 13px;
        }
        .breadcrumb {
            background: #e9ecf0;
            padding: 12px 0;
            font-size: 14px;
            border-bottom: 1px solid #d0d7de;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 14px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 14px;
            color: #6c7a8a;
        }
        .breadcrumb a {
            color: #2c5282;
        }
        .breadcrumb .current {
            color: #1e2a3a;
            font-weight: 600;
        }
        main {
            padding: 40px 0 60px;
        }
        h1 {
            font-size: 38px;
            font-weight: 800;
            color: #0b1a2e;
            margin-bottom: 12px;
            line-height: 1.2;
            border-left: 6px solid #f9c74f;
            padding-left: 20px;
        }
        h2 {
            font-size: 28px;
            font-weight: 700;
            color: #1a3a5c;
            margin: 48px 0 18px;
            padding-bottom: 8px;
            border-bottom: 3px solid #e0e7ef;
        }
        h3 {
            font-size: 22px;
            font-weight: 600;
            color: #2c5282;
            margin: 32px 0 14px;
        }
        h4 {
            font-size: 18px;
            font-weight: 600;
            color: #2d3748;
            margin: 22px 0 10px;
        }
        p {
            margin-bottom: 18px;
            word-break: break-word;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 40px;
            background: #eef2f7;
            padding: 14px 22px;
            border-radius: 12px;
            margin: 16px 0 28px;
            font-size: 14px;
            color: #2d3748;
        }
        .meta-info i {
            margin-right: 8px;
            color: #0077b6;
        }
        .meta-info .update {
            font-weight: 600;
            color: #c05621;
        }
        .featured-image {
            margin: 28px 0 34px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            background: #fff;
            text-align: center;
        }
        .featured-image img {
            width: 100%;
            max-width: 860px;
            height: auto;
            display: block;
            margin: 0 auto;
        }
        .featured-image figcaption {
            padding: 12px 20px;
            font-size: 14px;
            color: #4a5568;
            background: #f8fafc;
            border-top: 1px solid #e2e8f0;
        }
        .highlight-box {
            background: linear-gradient(135deg, #edf2fb, #e2eafc);
            border-left: 6px solid #f9c74f;
            padding: 18px 24px;
            border-radius: 12px;
            margin: 24px 0;
            font-weight: 500;
        }
        .highlight-box strong {
            color: #1a3a5c;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 28px 0;
            border-radius: 12px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            font-size: 15px;
        }
        th {
            background: #1a3a5c;
            color: #fff;
            padding: 14px 16px;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 12px 16px;
            border-bottom: 1px solid #e2e8f0;
        }
        tr:nth-child(even) {
            background: #f8fafc;
        }
        tr:hover {
            background: #edf2fb;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
            margin: 28px 0;
        }
        .card {
            background: #fff;
            border-radius: 14px;
            padding: 22px 20px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            transition: transform 0.2s, box-shadow 0.2s;
            border: 1px solid #eef2f7;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.10);
        }
        .card i {
            font-size: 28px;
            color: #f9c74f;
            margin-bottom: 12px;
        }
        .card h4 {
            margin-top: 0;
        }
        .interview-block {
            background: #f0f4fa;
            border-radius: 16px;
            padding: 24px 28px;
            margin: 32px 0;
            border: 1px solid #dce3ed;
        }
        .interview-block .quote {
            font-style: italic;
            font-size: 18px;
            color: #1e2a3a;
            border-left: 4px solid #f9c74f;
            padding-left: 20px;
            margin: 14px 0;
        }
        .interview-block .attribution {
            font-weight: 600;
            color: #2c5282;
            text-align: right;
            margin-top: 8px;
        }
        .pro-tip {
            background: #fffbeb;
            border: 1px solid #fbd38d;
            border-radius: 12px;
            padding: 16px 22px;
            margin: 22px 0;
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }
        .pro-tip i {
            color: #d69e2e;
            font-size: 24px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .link-list-inline {
            background: #f8fafc;
            border-radius: 12px;
            padding: 16px 22px;
            margin: 24px 0;
            border: 1px solid #dce3ed;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 18px;
        }
        .link-list-inline a {
            font-weight: 500;
        }
        .interactive-section {
            background: #fff;
            border-radius: 20px;
            padding: 32px 28px;
            margin: 48px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e9ecf0;
        }
        .interactive-section h2 {
            margin-top: 0;
            border-bottom: none;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 6px;
            color: #1e2a3a;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #dce3ed;
            border-radius: 10px;
            font-size: 15px;
            font-family: inherit;
            transition: 0.2s;
            background: #fafcff;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #0077b6;
            box-shadow: 0 0 0 4px rgba(0, 119, 182, 0.10);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }
        .btn {
            background: #1a3a5c;
            color: #fff;
            padding: 12px 32px;
            border: none;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn:hover {
            background: #0b1a2e;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 58, 92, 0.30);
        }
        .btn-secondary {
            background: #e2e8f0;
            color: #1e2a3a;
        }
        .btn-secondary:hover {
            background: #cbd5e0;
            box-shadow: none;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 30px;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #cbd5e0;
            transition: 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f9c74f;
            text-shadow: 0 0 8px rgba(249, 199, 79, 0.30);
        }
        .comment-item {
            border-bottom: 1px solid #e2e8f0;
            padding: 16px 0;
        }
        .comment-item:last-child {
            border-bottom: none;
        }
        .comment-item .author {
            font-weight: 600;
            color: #1a3a5c;
        }
        .comment-item .date {
            font-size: 13px;
            color: #6c7a8a;
            margin-left: 14px;
        }
        .comment-item .text {
            margin-top: 6px;
        }
        footer {
            background: #0b1a2e;
            color: #cbd5e0;
            padding: 48px 0 32px;
            margin-top: 40px;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        footer h4 {
            color: #f9c74f;
            margin-bottom: 16px;
            font-weight: 600;
        }
        footer a {
            color: #aad0f5;
        }
        footer a:hover {
            color: #ffd966;
        }
        friend-link {
            display: block;
            margin-top: 10px;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 0;
        }
        .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid #1e3a5c;
            padding-top: 24px;
            margin-top: 16px;
            text-align: center;
            font-size: 14px;
            color: #8a9db0;
        }
        .copyright strong {
            color: #e0f0ff;
        }
        @media (max-width: 900px) {
            footer .container {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                margin-top: 14px;
                background: rgba(255, 255, 255, 0.05);
                border-radius: 16px;
                padding: 12px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 12px 16px;
                border-radius: 10px;
            }
            h1 {
                font-size: 28px;
                padding-left: 14px;
            }
            h2 {
                font-size: 22px;
            }
            h3 {
                font-size: 19px;
            }
            .meta-info {
                flex-direction: column;
                gap: 8px;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            footer .container {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .interactive-section {
                padding: 20px 16px;
            }
            .star-rating {
                font-size: 26px;
            }
            .table-wrap {
                font-size: 14px;
            }
            th,
            td {
                padding: 10px 12px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            h1 {
                font-size: 24px;
            }
            .my-logo {
                font-size: 20px;
                padding: 2px 12px;
            }
            .my-logo small {
                font-size: 11px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .featured-image {
                margin: 16px 0 24px;
            }
        }