*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f5f7fa;
            color: #1e293b;
            line-height: 1.75;
            padding: 0 16px;
            max-width: 1280px;
            margin: 0 auto;
        }
        a {
            color: #1d4ed8;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0f3b9e;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 1.6rem;
            margin-bottom: 0.8rem;
            color: #0f172a;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4rem;
        }
        h2 {
            font-size: 1.9rem;
            border-bottom: 3px solid #e2e8f0;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.25rem;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            background: #fff;
            border-radius: 20px;
            padding: 24px 28px;
            margin: 16px 0 32px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
        }
        .badge {
            display: inline-block;
            background: #eef2ff;
            color: #1d4ed8;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 30px;
            letter-spacing: 0.3px;
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0 10px;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            background: linear-gradient(145deg, #0f3b9e, #1d4ed8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #f59e0b;
            font-size: 2rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #1e293b;
            cursor: pointer;
            padding: 4px 12px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #e2e8f0;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        nav a {
            padding: 8px 16px;
            border-radius: 40px;
            font-weight: 500;
            font-size: 0.95rem;
            color: #334155;
            transition: background 0.2s, color 0.2s;
        }
        nav a:hover {
            background: #eef2ff;
            color: #1d4ed8;
            text-decoration: none;
        }
        nav a.active {
            background: #1d4ed8;
            color: #fff;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            color: #64748b;
            padding: 8px 0 6px;
            width: 100%;
        }
        .breadcrumb a {
            color: #1d4ed8;
        }
        .breadcrumb span {
            color: #94a3b8;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin: 20px 0 10px;
            max-width: 600px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid #e2e8f0;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: #1d4ed8;
        }
        .search-form button {
            background: #1d4ed8;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0 24px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #0f3b9e;
            transform: scale(1.02);
        }
        .hero-img {
            margin: 24px 0 28px;
            border-radius: 16px;
            overflow: hidden;
            background: #e2e8f0;
            position: relative;
        }
        .hero-img img {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
        }
        .hero-img figcaption {
            padding: 10px 18px;
            font-size: 0.9rem;
            color: #475569;
            background: #f1f5f9;
            font-style: italic;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid #e2e8f0;
        }
        th {
            background: #f1f5f9;
            font-weight: 700;
            color: #0f172a;
        }
        tr:hover td {
            background: #f8fafc;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 28px 0;
        }
        .feedback-card {
            background: #f8fafc;
            border-radius: 16px;
            padding: 20px 24px;
            border: 1px solid #e2e8f0;
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 10px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 10px 14px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s;
            font-family: inherit;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #1d4ed8;
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: #1d4ed8;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 12px 20px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .feedback-card .btn-submit:hover {
            background: #0f3b9e;
            transform: scale(1.01);
        }
        .rating-stars {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #f59e0b;
            cursor: pointer;
        }
        .rating-stars i {
            transition: transform 0.15s;
        }
        .rating-stars i:hover {
            transform: scale(1.25);
        }
        friend-link {
            display: block;
            padding: 18px 0 8px;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 0;
        }
        footer {
            border-top: 2px solid #e2e8f0;
            padding: 24px 0 32px;
            margin-top: 28px;
            text-align: center;
            color: #475569;
            font-size: 0.9rem;
        }
        footer .copyright {
            font-weight: 500;
            margin-top: 12px;
            color: #1e293b;
        }
        @media (max-width: 820px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .container {
                padding: 16px 18px;
            }
        }
        @media (max-width: 680px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #fff;
                border-radius: 16px;
                padding: 12px 8px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                margin-top: 10px;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                z-index: 100;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 10px 16px;
                border-radius: 8px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                padding: 12px;
            }
            .hero-img img {
                max-height: 220px;
            }
            .my-logo {
                font-size: 1.6rem;
            }
            body {
                padding: 0 10px;
            }
            .container {
                padding: 12px 14px;
                border-radius: 14px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding: 36px 44px;
            }
        }
        .highlight {
            background: #fef9c3;
            padding: 2px 6px;
            border-radius: 6px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.8rem;
            vertical-align: middle;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .gap-8 {
            gap: 8px;
        }
        .text-muted {
            color: #64748b;
        }
        .updated-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #f1f5f9;
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #475569;
        }
        .linked-list {
            list-style: none;
            padding-left: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
        }
        .linked-list li a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #f8fafc;
            padding: 4px 14px 4px 10px;
            border-radius: 30px;
            font-size: 0.9rem;
            border: 1px solid #e2e8f0;
            transition: background 0.2s, border-color 0.2s;
        }
        .linked-list li a:hover {
            background: #eef2ff;
            border-color: #1d4ed8;
            text-decoration: none;
        }
        .linked-list li a i {
            color: #f59e0b;
            font-size: 0.8rem;
        }