* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f5f7fa;
            color: #1e293b;
            line-height: 1.7;
            padding: 0;
        }
        a {
            color: #1e6f9f;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0d3b5c;
            text-decoration: underline;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0a1e2e, #1a3a4e);
            color: #fff;
            padding: 18px 0;
            border-bottom: 4px solid #f59e0b;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .header-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: #f59e0b;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        nav a {
            color: #e2e8f0;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: all 0.2s;
        }
        nav a:hover {
            color: #fbbf24;
            border-bottom-color: #fbbf24;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 10px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d1d9e6;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: #7a8a9e;
        }
        .breadcrumb a {
            color: #1e6f9f;
        }
        .breadcrumb .current {
            color: #475569;
            font-weight: 500;
        }
        main {
            padding: 30px 0 50px;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0a1e2e;
            margin-bottom: 16px;
            line-height: 1.2;
            border-left: 6px solid #f59e0b;
            padding-left: 20px;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #0f2a3d;
            margin-top: 48px;
            margin-bottom: 16px;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 8px;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #1a3a4e;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #2c4a62;
            margin-top: 24px;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #1e293b;
        }
        .content-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 14px;
            margin: 24px 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
            display: block;
        }
        .img-caption {
            font-size: 0.9rem;
            color: #64748b;
            margin-top: -16px;
            margin-bottom: 24px;
            font-style: italic;
        }
        .highlight-box {
            background: #eef2f7;
            border-left: 5px solid #f59e0b;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .highlight-box strong {
            color: #0a1e2e;
        }
        ul,
        ol {
            margin: 12px 0 18px 24px;
            font-size: 1.05rem;
        }
        li {
            margin-bottom: 6px;
        }
        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, 0.06);
        }
        th {
            background: #0f2a3d;
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 10px 16px;
            border-bottom: 1px solid #e2e8f0;
        }
        tr:nth-child(even) {
            background: #f8fafc;
        }
        .search-section {
            background: #fff;
            border-radius: 16px;
            padding: 28px 32px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            margin: 40px 0;
            border: 1px solid #e2e8f0;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 220px;
            padding: 14px 18px;
            border: 2px solid #d1d9e6;
            border-radius: 10px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input[type="text"]:focus {
            border-color: #f59e0b;
        }
        .search-form button {
            background: #0f2a3d;
            color: #fff;
            border: none;
            padding: 14px 32px;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #1a3a4e;
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 40px 0;
        }
        @media (max-width:768px) {
            .feedback-section {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: #fff;
            border-radius: 16px;
            padding: 28px 32px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e2e8f0;
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .feedback-card textarea,
        .feedback-card input,
        .feedback-card select {
            padding: 12px 16px;
            border: 2px solid #d1d9e6;
            border-radius: 10px;
            font-size: 0.98rem;
            outline: none;
            transition: border 0.2s;
            font-family: inherit;
        }
        .feedback-card textarea:focus,
        .feedback-card input:focus,
        .feedback-card select:focus {
            border-color: #f59e0b;
        }
        .feedback-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-card button {
            background: #f59e0b;
            color: #0a1e2e;
            border: none;
            padding: 12px 24px;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
            justify-content: center;
        }
        .feedback-card button:hover {
            background: #fbbf24;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #d1d9e6;
            cursor: pointer;
        }
        .star-rating .fa-star.active {
            color: #f59e0b;
        }
        footer {
            background: #0a1e2e;
            color: #cbd5e1;
            padding: 40px 0 20px;
            margin-top: 40px;
            border-top: 4px solid #f59e0b;
        }
        footer a {
            color: #fbbf24;
        }
        footer a:hover {
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }
        @media (max-width:768px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        .footer-brand h3 {
            color: #fbbf24;
            font-size: 1.4rem;
            margin-top: 0;
        }
        .footer-brand p {
            color: #cbd5e1;
            font-size: 0.95rem;
        }
        friend-link {
            display: block;
            background: #0f2a3d;
            padding: 20px 24px;
            border-radius: 12px;
            margin: 20px 0 10px;
            border: 1px solid #1a3a4e;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            color: #fbbf24;
            font-weight: 500;
        }
        friend-link a:hover {
            color: #fff;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #1a3a4e;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        .copyright strong {
            color: #e2e8f0;
        }
        @media (max-width:768px) {
            .hamburger {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 16px 0 8px;
                gap: 10px;
            }
            .nav-menu.open {
                display: flex;
            }
            .header-flex {
                align-items: center;
            }
            h1 {
                font-size: 1.8rem;
                padding-left: 14px;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .container {
                padding: 0 14px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width:480px) {
            .my-logo {
                font-size: 1.5rem;
            }
            h1 {
                font-size: 1.5rem;
            }
            .feedback-card {
                padding: 18px;
            }
        }
        .last-update {
            font-size: 0.9rem;
            color: #64748b;
            margin-bottom: 24px;
            display: block;
            font-style: italic;
        }
        .table-responsive {
            overflow-x: auto;
        }
        .btn-icon {
            background: none;
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            color: #f59e0b;
            padding: 0 4px;
        }
        .btn-icon:hover {
            color: #fbbf24;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }