*,
        *::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: #f8f9fa;
            color: #1e293b;
            line-height: 1.8;
            padding: 0 16px;
            max-width: 1280px;
            margin: 0 auto;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #0f172a;
            margin: 1.6rem 0 0.8rem;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #1e293b;
            margin: 2.4rem 0 0.8rem;
            padding-bottom: 0.4rem;
            border-bottom: 4px solid #f59e0b;
            display: inline-block;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #334155;
            margin: 1.8rem 0 0.6rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #475569;
            margin: 1.2rem 0 0.4rem;
        }
        p {
            margin: 0 0 1.2rem;
            font-size: 1.05rem;
        }
        strong,
        b {
            color: #0f172a;
            font-weight: 700;
        }
        em {
            font-style: italic;
            color: #b45309;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1d4ed8;
            text-decoration: underline;
        }
        ul,
        ol {
            margin: 0 0 1.2rem 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        header {
            background: #ffffff;
            padding: 16px 20px;
            border-radius: 16px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
            margin: 16px 0 12px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: #0f172a;
            background: linear-gradient(135deg, #f59e0b, #d97706);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
            text-decoration: none !important;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none !important;
        }
        .my-logo i {
            -webkit-text-fill-color: #f59e0b;
            font-size: 1.6rem;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        nav a {
            padding: 8px 16px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.92rem;
            color: #334155;
            transition: all 0.25s;
            white-space: nowrap;
        }
        nav a:hover {
            background: #fef3c7;
            color: #92400e;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #0f172a;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #f1f5f9;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px 12px;
            background: #f1f5f9;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.88rem;
            color: #64748b;
            margin: 0 0 16px;
            width: 100%;
        }
        .breadcrumb a {
            color: #2563eb;
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: #1d4ed8;
        }
        .breadcrumb span.sep {
            color: #94a3b8;
            font-weight: 300;
        }
        main {
            flex: 1;
            background: #ffffff;
            border-radius: 24px;
            padding: 28px 28px 40px;
            box-shadow: 0 4px 32px rgba(0, 0, 0, 0.04);
            margin-bottom: 24px;
        }
        .feature-box {
            background: #fffbeb;
            border-left: 6px solid #f59e0b;
            padding: 16px 22px;
            border-radius: 12px;
            margin: 1.6rem 0;
        }
        .feature-box p {
            margin-bottom: 0.4rem;
        }
        .insight-badge {
            display: inline-block;
            background: #f59e0b;
            color: #fff;
            font-weight: 700;
            font-size: 0.75rem;
            padding: 2px 12px;
            border-radius: 30px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-right: 6px;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.4rem 0;
            font-size: 0.98rem;
            background: #f8fafc;
            border-radius: 12px;
            overflow: hidden;
        }
        .data-table th {
            background: #1e293b;
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 10px 16px;
            border-bottom: 1px solid #e2e8f0;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #fef9c3;
        }
        .content-img {
            max-width: 100%;
            height: auto;
            border-radius: 16px;
            margin: 1.6rem 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            display: block;
            width: 100%;
            object-fit: cover;
        }
        .search-box {
            background: #f1f5f9;
            padding: 24px 28px;
            border-radius: 20px;
            margin: 2rem 0 1.2rem;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .search-box input {
            flex: 1;
            min-width: 180px;
            padding: 12px 20px;
            border: 2px solid #e2e8f0;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
            background: #fff;
        }
        .search-box input:focus {
            border-color: #f59e0b;
        }
        .search-box button {
            background: #f59e0b;
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-box button:hover {
            background: #d97706;
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 2.4rem 0 1.6rem;
        }
        .feedback-card {
            background: #f8fafc;
            padding: 22px 24px;
            border-radius: 20px;
            border: 1px solid #e2e8f0;
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 10px;
            color: #0f172a;
        }
        .feedback-card textarea,
        .feedback-card input,
        .feedback-card select {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            font-size: 0.98rem;
            font-family: inherit;
            outline: none;
            transition: border 0.3s;
            margin-top: 6px;
            background: #fff;
        }
        .feedback-card textarea:focus,
        .feedback-card input:focus,
        .feedback-card select:focus {
            border-color: #f59e0b;
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card button {
            background: #1e293b;
            color: #fff;
            border: none;
            padding: 10px 24px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .feedback-card button:hover {
            background: #0f172a;
        }
        .star-group {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #f59e0b;
            margin: 6px 0 8px;
            cursor: pointer;
        }
        .star-group i {
            transition: transform 0.15s;
        }
        .star-group i:hover {
            transform: scale(1.2);
        }
        friend-link {
            display: block;
            background: #f1f5f9;
            padding: 20px 24px;
            border-radius: 20px;
            margin: 20px 0 12px;
            font-style: normal;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 12px;
            background: #fff;
            border-radius: 30px;
            font-size: 0.92rem;
            border: 1px solid #e2e8f0;
            transition: all 0.2s;
        }
        friend-link a:hover {
            background: #fef3c7;
            border-color: #f59e0b;
            text-decoration: none;
        }
        footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 28px 28px 20px;
            border-radius: 24px 24px 0 0;
            margin: 0 -16px 0;
            text-align: center;
            font-size: 0.92rem;
        }
        footer p {
            margin: 6px 0;
            color: #94a3b8;
        }
        footer a {
            color: #f59e0b;
        }
        footer a:hover {
            color: #fbbf24;
        }
        .copyright {
            border-top: 1px solid #1e293b;
            padding-top: 16px;
            margin-top: 16px;
            font-size: 0.85rem;
            color: #64748b;
        }
        @media (max-width: 820px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            main {
                padding: 20px 16px 30px;
            }
            .search-box {
                flex-direction: column;
                padding: 18px 16px;
            }
            .search-box input {
                min-width: unset;
                width: 100%;
            }
            .search-box button {
                width: 100%;
                justify-content: center;
            }
            header {
                padding: 12px 16px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            nav a {
                font-size: 0.82rem;
                padding: 6px 12px;
            }
            .breadcrumb {
                font-size: 0.78rem;
                padding: 6px 14px;
                gap: 4px 8px;
            }
        }
        @media (max-width: 640px) {
            body {
                padding: 0 8px;
            }
            header {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 12px;
                gap: 4px;
            }
            nav a {
                padding: 10px 16px;
                border-radius: 12px;
                background: #f8fafc;
            }
            #nav-toggle:checked~nav {
                display: flex;
            }
            h1 {
                font-size: 1.5rem;
            }
            h2 {
                font-size: 1.25rem;
            }
            .data-table {
                font-size: 0.82rem;
            }
            .data-table th,
            .data-table td {
                padding: 8px 10px;
            }
            .feature-box {
                padding: 12px 14px;
            }
            .feedback-card {
                padding: 16px 14px;
            }
            footer {
                padding: 20px 16px 16px;
                margin: 0 -8px 0;
                border-radius: 16px 16px 0 0;
            }
            .star-group {
                font-size: 1.3rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo i {
                font-size: 1.2rem;
            }
        }
        @media (min-width: 641px) {
            nav {
                display: flex !important;
            }
            .hamburger {
                display: none !important;
            }
        }
        .text-small {
            font-size: 0.9rem;
            color: #64748b;
        }
        .mt-1 {
            margin-top: 0.8rem;
        }
        .mb-1 {
            margin-bottom: 0.8rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .gap-2 {
            gap: 12px;
        }
        .rounded-full {
            border-radius: 999px;
        }
        .bg-amber-light {
            background: #fffbeb;
        }
        .p-3 {
            padding: 16px;
        }
        .table-wrap {
            overflow-x: auto;
        }
        .last-updated {
            display: inline-block;
            background: #e2e8f0;
            padding: 2px 16px;
            border-radius: 30px;
            font-size: 0.82rem;
            color: #475569;
            font-weight: 500;
        }