*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f4f7fc;
            color: #1a2634;
            line-height: 1.7;
            padding: 0 16px;
        }
        a {
            color: #0057a3;
            text-decoration: none;
            transition: color 0.25s 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: 1.5rem;
            margin-bottom: 1rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            border-radius: 24px;
            padding: 20px 28px 32px;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.06);
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0 12px;
            border-bottom: 2px solid #e9edf2;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(145deg, #0b2b3f, #1b6b8f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-decoration: none !important;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            -webkit-text-fill-color: #e63946;
            font-size: 2rem;
        }
        .my-logo:hover {
            text-decoration: none !important;
            opacity: 0.85;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-list {
            display: flex;
            gap: 6px 18px;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .nav-list li a {
            font-weight: 600;
            font-size: 0.95rem;
            padding: 6px 10px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-list li a:hover {
            background: #eef4fa;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1a2634;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
        }
        .hamburger:hover {
            background: #eef4fa;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px 10px;
            padding: 12px 0 8px;
            font-size: 0.9rem;
            color: #4a5a6a;
            border-bottom: 1px solid #eef2f6;
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: #0057a3;
        }
        .breadcrumb span.sep {
            color: #aab5c2;
        }
        .breadcrumb .current {
            color: #1a2634;
            font-weight: 600;
        }
        h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            margin: 0 0 16px 0;
            color: #0b2b3f;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 2rem 0 12px 0;
            color: #0b2b3f;
            border-left: 6px solid #e63946;
            padding-left: 18px;
        }
        h3 {
            font-size: 1.45rem;
            font-weight: 600;
            margin: 1.6rem 0 10px 0;
            color: #1b4a6b;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 1.2rem 0 8px 0;
            color: #2a5a7a;
        }
        p {
            margin-bottom: 1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 400;
            color: #2c3e50;
            margin-bottom: 1.6rem;
        }
        .feature-img {
            margin: 24px 0 28px;
            border-radius: 16px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .feature-img figcaption {
            font-size: 0.85rem;
            color: #5a6a7a;
            text-align: center;
            margin-top: 8px;
            font-style: italic;
        }
        .info-card {
            background: #f0f6fe;
            border-radius: 16px;
            padding: 20px 24px;
            margin: 20px 0 24px;
            border-left: 5px solid #0057a3;
        }
        .info-card strong {
            color: #0b2b3f;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 18px;
            margin: 20px 0 28px;
        }
        .stat-item {
            background: #f8faff;
            padding: 18px 16px;
            border-radius: 14px;
            text-align: center;
            border: 1px solid #e2eaf2;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
        }
        .stat-item .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #e63946;
            display: block;
        }
        .stat-item .label {
            font-size: 0.95rem;
            color: #3a4a5a;
        }
        .form-section {
            background: #f9fcff;
            border-radius: 18px;
            padding: 24px 28px;
            margin: 32px 0 20px;
            border: 1px solid #dde6ef;
        }
        .form-section h3 {
            margin-top: 0;
            border: none;
            padding: 0;
        }
        .form-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin: 12px 0 6px;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            flex: 1 1 200px;
            padding: 12px 16px;
            border: 1px solid #cbd5e0;
            border-radius: 10px;
            font-size: 0.95rem;
            background: #fff;
            transition: border 0.2s, box-shadow 0.2s;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #0057a3;
            box-shadow: 0 0 0 3px rgba(0, 87, 163, 0.15);
        }
        .form-group textarea {
            min-height: 80px;
            resize: vertical;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #0057a3;
            color: #fff !important;
            padding: 10px 26px;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            text-decoration: none !important;
        }
        .btn:hover {
            background: #0b3b6b;
            transform: translateY(-1px);
            text-decoration: none !important;
        }
        .btn-secondary {
            background: #e63946;
        }
        .btn-secondary:hover {
            background: #b71c2b;
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #f4b836;
            cursor: pointer;
            margin: 6px 0 10px;
        }
        .rating-stars i {
            transition: transform 0.15s, color 0.15s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
            color: #e09d1a;
        }
        .comment-list {
            margin: 16px 0 8px;
        }
        .comment-item {
            background: #f4f8fd;
            padding: 14px 18px;
            border-radius: 12px;
            margin-bottom: 12px;
            border-left: 4px solid #0057a3;
        }
        .comment-item .author {
            font-weight: 700;
            color: #0b2b3f;
        }
        .comment-item .time {
            font-size: 0.8rem;
            color: #6a7a8a;
            margin-left: 12px;
        }
        .comment-item .text {
            margin-top: 4px;
        }
        .link-list-inline {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 20px;
            list-style: none;
            padding: 0;
            margin: 16px 0 20px;
        }
        .link-list-inline li a {
            font-weight: 500;
            background: #f0f6fe;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.9rem;
        }
        .link-list-inline li a:hover {
            background: #dde8f5;
            text-decoration: none;
        }
        .site-footer {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 2px solid #e9edf2;
            font-size: 0.9rem;
            color: #3a4a5a;
        }
        .site-footer friend-link {
            display: block;
            padding: 12px 0 8px;
            font-weight: 600;
        }
        .site-footer friend-link a {
            display: inline-block;
            margin: 0 14px 6px 0;
        }
        .copyright {
            padding: 16px 0 6px;
            text-align: center;
            font-size: 0.85rem;
            color: #5a6a7a;
            border-top: 1px solid #eef2f6;
            margin-top: 12px;
        }
        @media (max-width: 820px) {
            .container {
                padding: 14px 16px 20px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #ffffff;
                padding: 12px 0 16px;
                border-top: 1px solid #e2eaf2;
                margin-top: 8px;
            }
            .nav-list.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .site-header {
                flex-wrap: wrap;
            }
            .nav-wrapper {
                width: 100%;
                justify-content: space-between;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .form-group {
                flex-direction: column;
            }
            .form-group input,
            .form-group textarea,
            .form-group select {
                flex: 1 1 auto;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 10px 12px 16px;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.35rem;
                padding-left: 12px;
            }
            h3 {
                font-size: 1.2rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .rating-stars {
                font-size: 1.5rem;
            }
        }
        .text-muted {
            color: #5a6a7a;
        }
        .mt-1 {
            margin-top: 0.5rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        .last-updated {
            font-size: 0.85rem;
            color: #5a6a7a;
            background: #f0f4f9;
            display: inline-block;
            padding: 4px 16px;
            border-radius: 30px;
        }