*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, Roboto, 'Helvetica Neue', sans-serif;
            background: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0;
        }
        a {
            color: #0047ab;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover,
        a:focus-visible {
            color: #e63946;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.4rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: #0d1b2a;
            margin-top: 0;
            margin-bottom: 0.6rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 3px solid #e63946;
            padding-bottom: 0.3rem;
            margin-top: 2.8rem;
        }
        h3 {
            font-size: 1.4rem;
            margin-top: 2rem;
            color: #1b3a5c;
        }
        h4 {
            font-size: 1.15rem;
            margin-top: 1.4rem;
            color: #2c3e50;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0d1b2a 0%, #1b3a5c 100%);
            color: #fff;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f9d423, #e63946);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            transition: transform 0.25s ease;
        }
        .my-logo:hover {
            transform: scale(1.04);
        }
        .my-logo i {
            -webkit-text-fill-color: #e63946;
            margin-right: 6px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        nav a {
            color: #e0e7f0;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.95rem;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        nav a:hover,
        nav a:focus-visible {
            background: rgba(230, 57, 70, 0.25);
            color: #fff;
            text-decoration: none;
        }
        .breadcrumb-wrap {
            background: #e9edf2;
            padding: 8px 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0d7de;
        }
        .breadcrumb-wrap .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 4px 8px;
        }
        .breadcrumb-wrap a {
            color: #0047ab;
        }
        .breadcrumb-wrap span {
            color: #4a5568;
        }
        .breadcrumb-wrap .sep {
            color: #a0aec0;
            font-weight: 300;
        }
        .hero {
            background: linear-gradient(145deg, #0d1b2a, #1b3a5c);
            padding: 3rem 20px 2.8rem;
            text-align: center;
            color: #fff;
            margin-bottom: 2rem;
        }
        .hero h1 {
            font-size: 2.8rem;
            color: #fff;
            margin-bottom: 0.3rem;
            letter-spacing: -0.5px;
        }
        .hero p {
            font-size: 1.2rem;
            color: #cbd5e1;
            max-width: 760px;
            margin: 0.6rem auto 0;
        }
        .hero .tagline {
            display: inline-block;
            background: #e63946;
            color: #fff;
            padding: 4px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-top: 0.6rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            padding: 0 20px 3rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        @media (min-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr 320px;
            }
        }
        article {
            background: #fff;
            border-radius: 20px;
            padding: 2rem 2.2rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }
        article .last-updated {
            display: block;
            font-size: 0.85rem;
            color: #6b7a8f;
            margin-bottom: 1.2rem;
            border-left: 4px solid #e63946;
            padding-left: 12px;
            font-weight: 500;
        }
        .featured-image {
            margin: 1.8rem 0 2rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.10);
        }
        .featured-image img {
            width: 100%;
            object-fit: cover;
        }
        .featured-image figcaption {
            font-size: 0.85rem;
            color: #5a6a7a;
            text-align: center;
            padding: 8px 0 0;
            font-style: italic;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.4rem 1.6rem;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
            border: 1px solid #eef2f6;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #e63946;
            padding-bottom: 0.4rem;
            margin-bottom: 1rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding-left: 0;
        }
        .sidebar-card ul li {
            padding: 0.3rem 0;
            border-bottom: 1px solid #f0f2f5;
        }
        .sidebar-card ul li a {
            font-weight: 500;
        }
        .search-form {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 140px;
            padding: 10px 16px;
            border: 2px solid #d0d7de;
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: #e63946;
        }
        .search-form button {
            background: #e63946;
            color: #fff;
            border: none;
            padding: 10px 22px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .search-form button:hover {
            background: #c1121f;
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.6rem;
            margin-top: 1.6rem;
        }
        @media (min-width: 600px) {
            .feedback-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        .comment-form textarea,
        .comment-form input,
        .rating-form select,
        .rating-form input {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid #d0d7de;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: border 0.2s;
            margin-bottom: 10px;
        }
        .comment-form textarea:focus,
        .comment-form input:focus,
        .rating-form select:focus {
            border-color: #e63946;
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-grid button {
            background: #0047ab;
            color: #fff;
            border: none;
            padding: 10px 28px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .feedback-grid button:hover {
            background: #00307a;
            transform: scale(1.02);
        }
        .rating-stars {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #f0b429;
            margin-bottom: 10px;
            cursor: pointer;
        }
        .rating-stars i {
            transition: transform 0.15s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        footer {
            background: #0d1b2a;
            color: #cbd5e1;
            padding: 2.4rem 20px 1.8rem;
            margin-top: 2rem;
        }
        footer .container {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            justify-content: center;
        }
        .footer-links a {
            color: #a0b4c8;
            font-size: 0.95rem;
        }
        .footer-links a:hover {
            color: #f9d423;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 20px;
            justify-content: center;
            background: rgba(255, 255, 255, 0.04);
            padding: 1rem 1.4rem;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.95rem;
        }
        friend-link a {
            color: #7aa9d9;
            font-weight: 500;
            padding: 2px 6px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        friend-link a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #f9d423;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            font-size: 0.85rem;
            color: #6b7f94;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.2rem;
            margin-top: 0.4rem;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                padding: 10px 0 6px;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                margin-top: 8px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 10px 16px;
                border-radius: 8px;
            }
            .header-inner {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
                margin-top: 2rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            article {
                padding: 1.2rem 1rem;
            }
            .content-grid {
                padding: 0 12px 2rem;
                gap: 1.2rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .breadcrumb-wrap {
                font-size: 0.8rem;
                padding: 6px 12px;
            }
            footer .container {
                gap: 0.8rem;
            }
        }
        @media (max-width: 420px) {
            .hero {
                padding: 2rem 12px 1.8rem;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .search-form input {
                min-width: 100px;
                font-size: 0.85rem;
            }
            .search-form button {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .sidebar-card {
                padding: 1rem;
            }
        }
        .highlight {
            background: #fef3c7;
            padding: 0 4px;
            border-radius: 4px;
            font-weight: 600;
        }
        .btn-top {
            position: fixed;
            bottom: 32px;
            right: 28px;
            background: #e63946;
            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(230, 57, 70, 0.35);
            transition: transform 0.2s, background 0.2s;
            z-index: 999;
            border: none;
            cursor: pointer;
        }
        .btn-top:hover {
            transform: translateY(-4px);
            background: #c1121f;
        }
        @media (max-width: 600px) {
            .btn-top {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
                bottom: 20px;
                right: 16px;
            }
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6rem 0;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .data-table th {
            background: #0d1b2a;
            color: #fff;
            font-weight: 600;
            padding: 12px 16px;
            text-align: left;
        }
        .data-table td {
            padding: 10px 16px;
            border-bottom: 1px solid #eef2f6;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #f8fafc;
        }
        .data-table .alt td {
            background: #f9fafb;
        }