*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f8fafc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1e40af;
            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 {
            line-height: 1.3;
            color: #0f172a;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
        }
        h1 {
            font-size: 2.5rem;
            margin-top: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            border-bottom: 3px solid #e2e8f0;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
            border-radius: 20px;
            padding: 1.5rem 2rem 2rem;
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0 0.5rem;
            border-bottom: 2px solid #e2e8f0;
            position: relative;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f59e0b, #ef4444);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: inline-block;
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .logo-sub {
            font-size: 0.75rem;
            color: #64748b;
            display: block;
            -webkit-text-fill-color: #64748b;
            letter-spacing: 0.5px;
        }
        nav {
            display: flex;
            gap: 0.25rem;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            color: #334155;
            transition: background 0.2s, color 0.2s;
        }
        nav a:hover {
            background: #2563eb;
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: #0f172a;
            padding: 0.2rem 0.5rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #e2e8f0;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.75rem 0 0.25rem;
            font-size: 0.85rem;
            color: #64748b;
            gap: 0.3rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.4rem;
            color: #94a3b8;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-box {
            display: flex;
            max-width: 520px;
            margin: 1.8rem 0 1.2rem;
            border-radius: 50px;
            overflow: hidden;
            border: 2px solid #e2e8f0;
            transition: border-color 0.2s;
            background: #fff;
        }
        .search-box:focus-within {
            border-color: #2563eb;
        }
        .search-box input {
            flex: 1;
            padding: 0.8rem 1.2rem;
            border: none;
            font-size: 1rem;
            outline: none;
            background: transparent;
            min-width: 0;
        }
        .search-box button {
            padding: 0.8rem 1.6rem;
            background: #2563eb;
            color: #fff;
            border: none;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-box button:hover {
            background: #1e40af;
        }
        .meta-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem 2rem;
            font-size: 0.9rem;
            color: #64748b;
            margin: 0.5rem 0 1.5rem;
            padding: 0.5rem 0;
            border-bottom: 1px dashed #e2e8f0;
        }
        .meta-bar i {
            margin-right: 0.3rem;
        }
        section {
            margin: 2.5rem 0;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.8rem;
            margin: 1.5rem 0;
        }
        .card {
            background: #f1f5f9;
            border-radius: 16px;
            padding: 1.5rem;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
        }
        .card h4 {
            margin-top: 0;
        }
        .card i {
            color: #2563eb;
            margin-right: 0.4rem;
        }
        .insight-box {
            background: #eef2ff;
            border-left: 6px solid #2563eb;
            padding: 1.2rem 1.8rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .insight-box strong {
            color: #1e40af;
        }
        .emoji-lg {
            font-size: 1.8rem;
        }
        .featured-image {
            margin: 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            background: #e2e8f0;
            position: relative;
        }
        .featured-image img {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.75rem 1rem;
            font-size: 0.9rem;
            color: #475569;
            background: #f8fafc;
            border-top: 1px solid #e2e8f0;
        }
        .interact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2rem 0;
        }
        @media (max-width:700px) {
            .interact-grid {
                grid-template-columns: 1fr;
            }
        }
        .interact-card {
            background: #f8fafc;
            border-radius: 16px;
            padding: 1.8rem;
            border: 1px solid #e2e8f0;
        }
        .interact-card h3 {
            margin-top: 0;
        }
        .interact-card form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .interact-card input,
        .interact-card textarea,
        .interact-card select {
            padding: 0.7rem 1rem;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border-color 0.2s;
            background: #fff;
            width: 100%;
        }
        .interact-card input:focus,
        .interact-card textarea:focus,
        .interact-card select:focus {
            border-color: #2563eb;
            outline: none;
        }
        .interact-card textarea {
            resize: vertical;
            min-height: 90px;
        }
        .interact-card .btn {
            padding: 0.7rem 1.5rem;
            border: none;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            width: fit-content;
        }
        .interact-card .btn-primary {
            background: #2563eb;
            color: #fff;
        }
        .interact-card .btn-primary:hover {
            background: #1e40af;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #cbd5e1;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f59e0b;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        .data-table th,
        .data-table td {
            padding: 0.8rem 1rem;
            border-bottom: 1px solid #e2e8f0;
            text-align: left;
        }
        .data-table th {
            background: #f1f5f9;
            font-weight: 700;
            color: #0f172a;
        }
        .data-table tr:hover td {
            background: #f8fafc;
        }
        footer {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 3px solid #e2e8f0;
            font-size: 0.9rem;
            color: #475569;
        }
        friend-link {
            display: block;
            padding: 1rem 0;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.8rem 0.2rem 0;
            padding: 0.3rem 0.8rem;
            background: #f1f5f9;
            border-radius: 20px;
            font-size: 0.85rem;
            transition: background 0.2s;
        }
        friend-link a:hover {
            background: #2563eb;
            color: #fff;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding: 1.5rem 0 0.5rem;
            font-size: 0.85rem;
            color: #94a3b8;
            border-top: 1px solid #e2e8f0;
            margin-top: 1rem;
        }
        @media (max-width:768px) {
            body {
                padding: 0 0.5rem;
            }
            .container {
                padding: 1rem 1rem 1.5rem;
                border-radius: 12px;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .my-logo {
                font-size: 1.6rem;
            }
            header {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
                order: 2;
            }
            nav {
                order: 3;
                flex-basis: 100%;
                display: none;
                flex-direction: column;
                gap: 0.2rem;
                padding: 0.75rem 0 0.25rem;
                border-top: 1px solid #e2e8f0;
                margin-top: 0.75rem;
            }
            nav a {
                padding: 0.6rem 1rem;
                border-radius: 10px;
            }
            #nav-toggle:checked~.hamburger {
                color: #2563eb;
            }
            #nav-toggle:checked~nav {
                display: flex;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .search-box {
                flex-direction: column;
                border-radius: 16px;
            }
            .search-box input {
                padding: 0.7rem 1rem;
            }
            .search-box button {
                padding: 0.7rem 1rem;
                justify-content: center;
            }
            .data-table {
                font-size: 0.82rem;
            }
            .data-table th,
            .data-table td {
                padding: 0.5rem 0.6rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .interact-grid {
                gap: 1.2rem;
            }
        }
        @media (max-width:480px) {
            .container {
                padding: 0.75rem 0.75rem 1.2rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            .meta-bar {
                flex-direction: column;
                gap: 0.3rem;
                align-items: flex-start;
            }
            .star-rating label {
                font-size: 1.4rem;
            }
        }
        @media print {
            .search-box,
            .interact-card form,
            .hamburger,
            nav {
                display: none !important;
            }
            body {
                background: #fff;
                padding: 0;
            }
            .container {
                box-shadow: none;
                padding: 0.5rem;
            }
        }
        :target {
            scroll-margin-top: 80px;
        }