*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
            line-height: 1.6;
            background: #f4f7fa;
            color: #1a1d29;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1rem;
        }
        header {
            background: linear-gradient(135deg, #00308f, #0066b2);
            padding: 0.6rem 0;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-grid {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            text-decoration: none;
            color: #fff;
            background: linear-gradient(145deg, #fdd428, #f9a826);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            font-size: 2.2rem;
            -webkit-text-fill-color: initial;
            color: #fdd428;
        }
        .logo-helper {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.8);
            display: block;
            margin-top: -10px;
            background: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .main-nav {
            display: flex;
            gap: 1.2rem;
            align-items: center;
            flex-wrap: wrap;
            transition: all 0.3s ease;
        }
        .main-nav a {
            color: #eef1f8;
            text-decoration: none;
            font-weight: 600;
            font-size: .95rem;
            padding: 8px 8px;
            border-radius: 30px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: background .2s, color .2s;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #ffd966;
        }
        .burger {
            display: none;
            background: none;
            border: none;
            font-size: 2rem;
            color: white;
            cursor: pointer;
            line-height: 1;
        }
        .breadcrumb-nav {
            padding: 0.8rem 0;
            font-size: 0.85rem;
            color: #3a4050;
            background: #fff;
            border-bottom: 1px solid #e3e8ee;
        }
        .breadcrumb-nav a {
            color: #0066b2;
            text-decoration: none;
        }
        .breadcrumb-nav span {
            margin: 0 8px;
            color: #8a94a6;
        }
        .main-area {
            display: flex;
            gap: 2rem;
            margin: 2rem 0;
        }
        article {
            flex: 2.8;
            background: #ffffff;
            padding: 2rem;
            border-radius: 24px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
        }
        .sidebar-area {
            flex: 1.2;
            background: #fff;
            border-radius: 24px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
            padding: 1.6rem;
            height: fit-content;
            position: sticky;
            top: 90px;
        }
        h1 {
            font-size: 2.5rem;
            line-height: 1.22;
            margin-bottom: 1.2rem;
            color: #0b1e38;
            border-bottom: 3px solid #ffe45c;
            padding-bottom: .5rem;
        }
        h2 {
            font-size: 1.9rem;
            margin-top: 2.4rem;
            color: #0b3b63;
            position: relative;
            padding-left: 16px;
            margin-bottom: 1rem;
        }
        h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.3rem;
            height: 1.7rem;
            width: 7px;
            background: #f9a826;
            border-radius: 6px;
        }
        h3 {
            font-size: 1.45rem;
            margin: 1.8rem 0 .8rem;
            color: #1c4a74;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 1.2rem 0 .5rem;
            color: #345d85;
        }
        p {
            margin-bottom: 1.1rem;
            text-align: justify;
        }
        strong {
            font-weight: 700;
        }
        em {
            font-style: italic;
            color: #094a75;
        }
        .list {
            margin: 1rem 0 1.2rem 1.2rem;
        }
        .list li {
            margin-bottom: .5rem;
        }
        .feature-card {
            background: #edf5ff;
            border-radius: 18px;
            padding: 1rem 1.4rem;
            margin: 1.4rem 0;
            border-left: 5px solid #0173b5;
        }
        .feature-card i {
            margin-right: 8px;
            color: #f07700;
        }
        .faq-top {
            background: #f1f7fd;
            border-radius: 20px;
            padding: 1rem;
            margin: 1.2rem 0;
        }
        .img-style {
            max-width: 100%;
            border-radius: 24px;
            margin: 1.5rem 0;
            height: auto;
            object-fit: cover;
            box-shadow: 0 15px 30px rgba(42, 65, 94, 0.12);
        }
        .image-caption {
            font-size: .9rem;
            color: #6e7787;
            text-align: center;
            margin-top: -0.8rem;
            margin-bottom: 1.8rem;
        }
        .table-responsive {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #fffbe2;
            border-radius: 16px;
        }
        th {
            background: #003f70;
            color: white;
            padding: 12px;
        }
        td,
        th {
            padding: 10px 14px;
            border-bottom: 1px solid #ccc;
            text-align: left;
            font-size: .95rem;
        }
        tr:hover {
            background: #f9ecbe;
        }
        .comment-box,
        .rating-box {
            background: #f8fbff;
            border-radius: 20px;
            padding: 1.5rem;
            margin-top: 2.2rem;
        }
        .comment-textarea {
            width: 100%;
            border: 2px solid #c3d6e8;
            padding: 12px;
            border-radius: 16px;
            min-height: 100px;
            font-family: inherit;
            font-size: .95rem;
            resize: vertical;
            margin: 1rem 0;
        }
        .btn-submit {
            background: #0066b2;
            color: #fff;
            border: none;
            padding: 12px 32px;
            font-size: 1rem;
            border-radius: 50px;
            cursor: pointer;
            transition: transform .2s ease, background .2s;
        }
        .btn-submit:hover {
            background: #ff8c00;
            transform: translateY(-3px);
        }
        .form-group {
            margin: 1rem 0;
        }
        input[type="text"],
        input[type="email"] {
            width: 100%;
            max-width: 360px;
            padding: 10px 14px;
            border: 1px solid #b5c6d6;
            border-radius: 30px;
            font-size: .95rem;
            transition: border 0.2s, box-shadow 0.2s;
        }
        input:focus {
            outline: none;
            border-color: #f9a826;
            box-shadow: 0 0 0 3px rgba(249, 168, 38, 0.25);
        }
        .star {
            font-size: 2.2rem;
            cursor: pointer;
            color: #d1d9e3;
            transition: color .15s;
            margin-right: 5px;
        }
        .star.selected {
            color: #f9a826;
        }
        .score-thanks {
            color: #14805e;
            font-weight: 600;
            margin: .8rem 0;
        }
        .sidebar-title {
            font-size: 1.3rem;
            border-bottom: 2px solid #ffdf60;
            padding-bottom: 8px;
            margin-bottom: 15px;
            font-weight: 700;
        }
        .side-widget {
            margin: 1.4rem 0;
        }
        .side-widget ul {
            list-style: none;
        }
        .side-widget li {
            margin-bottom: 8px;
        }
        .side-widget a {
            text-decoration: none;
            color: #1a4b78;
            font-weight: 600;
        }
        .side-widget a:hover {
            color: #f07700;
            text-decoration: underline;
        }
        logoutfriend {
            display: block;
        }
        friend-link {
            display: flex;
            gap: 1.3rem;
            flex-wrap: wrap;
        }
        friend-link a {
            margin-right: 12px;
            color: #1884d0;
            text-decoration: none;
            font-weight: 500;
        }
        .footer {
            background: #02121f;
            color: #bccde0;
            padding: 2.4rem 1rem 1.5rem;
            margin-top: 3.5rem;
            border-radius: 30px 30px 0 0;
        }
        .footer a {
            color: #6fc9ff;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            margin-top: 1.5rem;
            font-size: 0.9rem;
            border-top: 1px solid #1b3b58;
            padding-top: 1.5rem;
        }
        .pulse-circle {
            background: #c8e6c9;
            color: #256029;
            border-radius: 50px;
            font-size: 0.75rem;
            padding: 2px 10px;
            display: inline-block;
            margin-left: 5px;
        }
        @media (max-width: 900px) {
            .main-area {
                flex-direction: column;
            }
            .sidebar-area {
                position: static;
                width: 100%;
            }
            h1 {
                font-size: 2rem;
            }
            .burger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 12px 0 6px;
            }
            .main-nav.open {
                display: flex;
            }
            .header-grid {
                align-items: center;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: .4rem;
            }
            article {
                padding: 1rem;
            }
        }
        .content-tag {
            font-size: 0.78rem;
            display: inline-block;
            background: #dceeff;
            padding: 4px 12px;
            border-radius: 50px;
            color: #263746;
            margin-bottom: 10px;
        }
        .vertical-rhythm p {
            margin-bottom: 1.4rem;
        }
        .feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.2rem;
            margin: 1.8rem 0;
        }
        .feature-list .item {
            background: #f8fbfe;
            border-radius: 20px;
            padding: 20px 16px;
            border: 1px solid #d3e1ef;
            transition: transform .25s ease, box-shadow .25s;
        }
        .feature-list .item:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(2, 78, 155, 0.08);
        }
        .go-to-top {
            display: inline-block;
            background: #0066b2;
            color: white !important;
            padding: 8px 18px;
            border-radius: 30px;
            text-decoration: none;
            font-size: .9rem;
            margin-top: 14px;
        }
        .last-updated {
            color: #6d7c93;
            font-size: .9rem;
            padding: 5px 10px;
            background: #eef2f7;
            border-radius: 30px;
            display: inline-block;
        }