*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: #f8f9fc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0 1rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover,
        a:focus {
            color: #1d4ed8;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: #0f172a;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.5rem;
            border-bottom: 4px solid #f59e0b;
            display: inline-block;
            padding-bottom: 0.3rem;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #3b82f6;
            padding-left: 1rem;
            margin-top: 2.8rem;
        }
        h3 {
            font-size: 1.35rem;
            color: #1e293b;
            margin-top: 2rem;
        }
        h4 {
            font-size: 1.1rem;
            color: #334155;
            margin-top: 1.2rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .text-muted {
            color: #64748b;
            font-size: 0.95rem;
        }
        .text-small {
            font-size: 0.9rem;
        }
        header {
            padding: 1rem 0 0.5rem 0;
            border-bottom: 2px solid #e2e8f0;
            margin-bottom: 1.5rem;
            position: relative;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #3b82f6, #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: inline-block;
            text-decoration: none !important;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none !important;
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            -webkit-text-fill-color: #64748b;
            color: #64748b;
            display: block;
            letter-spacing: 0;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        nav a {
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.4rem 0.8rem;
            border-radius: 6px;
            transition: background 0.2s ease, color 0.2s ease;
            color: #1e293b;
        }
        nav a:hover {
            background: #e2e8f0;
            color: #1d4ed8;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            background: none;
            border: 1px solid #cbd5e1;
            color: #1e293b;
            transition: background 0.2s ease;
        }
        .hamburger:hover {
            background: #e2e8f0;
        }
        #nav-toggle {
            display: none;
        }
        #nav-toggle:checked~nav {
            display: flex;
            flex-direction: column;
            width: 100%;
            padding: 1rem 0 0.5rem 0;
        }
        #nav-toggle:checked~nav a {
            width: 100%;
            padding: 0.6rem 1rem;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.6rem 0;
            margin: 0.5rem 0 1rem 0;
            font-size: 0.9rem;
            gap: 0.3rem 0.6rem;
            color: #64748b;
            background: #f1f5f9;
            border-radius: 8px;
            padding: 0.5rem 1rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #94a3b8;
            margin-right: 0.6rem;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #3b82f6;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .hero {
            background: linear-gradient(135deg, #1e3a5f 0%, #2d4a7a 50%, #1e293b 100%);
            color: #fff;
            padding: 2.5rem 2rem;
            border-radius: 18px;
            margin: 1.5rem 0 2.5rem 0;
            text-align: center;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
        }
        .hero h1 {
            color: #fff;
            border-bottom: none;
            font-size: 2.6rem;
            margin-top: 0;
        }
        .hero p {
            font-size: 1.2rem;
            opacity: 0.9;
            max-width: 750px;
            margin: 1rem auto 0;
        }
        .hero .emoji-big {
            font-size: 2.2rem;
            display: inline-block;
            margin-bottom: 0.5rem;
        }
        .img-container {
            margin: 2rem 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            background: #e2e8f0;
            position: relative;
        }
        .img-container img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .img-caption {
            padding: 0.7rem 1.2rem;
            font-size: 0.9rem;
            color: #475569;
            background: #f1f5f9;
            border-top: 1px solid #e2e8f0;
        }
        .highlight-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .highlight-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.5rem;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
            border: 1px solid #e2e8f0;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }
        .highlight-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.08);
        }
        .highlight-card .icon {
            font-size: 2rem;
            color: #3b82f6;
            margin-bottom: 0.6rem;
        }
        .highlight-card h3 {
            margin-top: 0;
            font-size: 1.2rem;
        }
        .faq-item {
            background: #fff;
            border-radius: 10px;
            padding: 1.2rem 1.5rem;
            margin-bottom: 0.8rem;
            border: 1px solid #e2e8f0;
            transition: box-shadow 0.2s ease;
        }
        .faq-item:hover {
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
        }
        .faq-item summary {
            font-weight: 600;
            cursor: pointer;
            font-size: 1.05rem;
            color: #0f172a;
            outline: none;
        }
        .faq-item summary::-webkit-details-marker {
            color: #3b82f6;
        }
        .faq-item .faq-answer {
            margin-top: 0.8rem;
            padding-top: 0.8rem;
            border-top: 1px solid #f1f5f9;
        }
        .search-box {
            display: flex;
            gap: 0.6rem;
            max-width: 600px;
            margin: 1.5rem 0;
            flex-wrap: wrap;
        }
        .search-box input {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s ease;
            min-width: 180px;
        }
        .search-box input:focus {
            border-color: #3b82f6;
        }
        .search-box button {
            padding: 0.7rem 1.5rem;
            background: #3b82f6;
            color: #fff;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s ease;
        }
        .search-box button:hover {
            background: #1d4ed8;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2rem 0;
        }
        .feedback-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.8rem;
            border: 1px solid #e2e8f0;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.5rem;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 0.7rem 1rem;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 0.95rem;
            outline: none;
            font-family: inherit;
            transition: border 0.2s ease;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #3b82f6;
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card button {
            padding: 0.7rem 1.5rem;
            background: #8b5cf6;
            color: #fff;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s ease;
        }
        .feedback-card button:hover {
            background: #7c3aed;
        }
        .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: 1.6rem;
            color: #cbd5e1;
            cursor: pointer;
            transition: color 0.15s ease;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f59e0b;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 0.6rem 1.5rem;
            list-style: none;
            padding: 0;
            margin: 1.5rem 0;
        }
        .link-list li {
            margin-bottom: 0.3rem;
        }
        .link-list a {
            display: inline-block;
            padding: 0.3rem 0;
            font-weight: 500;
        }
        .link-list a::before {
            content: "▸ ";
            color: #f59e0b;
            font-weight: 700;
        }
        footer {
            margin-top: 3.5rem;
            padding: 2rem 0 1.5rem 0;
            border-top: 2px solid #e2e8f0;
        }
        footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.5rem;
        }
        footer .footer-col {
            flex: 1 1 240px;
        }
        footer h4 {
            margin-top: 0;
            font-size: 1.1rem;
            color: #0f172a;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.5rem;
            padding: 1rem 0;
            border-top: 1px solid #e2e8f0;
            margin-top: 1.2rem;
            font-size: 0.95rem;
        }
        friend-link a {
            color: #2563eb;
            font-weight: 500;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding: 1.2rem 0 0.2rem 0;
            color: #64748b;
            font-size: 0.9rem;
            border-top: 1px solid #e2e8f0;
            margin-top: 1rem;
        }
        .copyright strong {
            color: #1e293b;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.6rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .hero {
                padding: 1.8rem 1.2rem;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .header-top {
                flex-wrap: wrap;
            }
            .hamburger {
                display: inline-block;
            }
            nav {
                display: none;
                width: 100%;
                margin-top: 0.5rem;
            }
            #nav-toggle:checked~nav {
                display: flex;
            }
            .highlight-grid {
                grid-template-columns: 1fr;
            }
            .link-list {
                grid-template-columns: 1fr 1fr;
            }
            .breadcrumb {
                font-size: 0.8rem;
                padding: 0.4rem 0.8rem;
            }
            .search-box button {
                width: 100%;
            }
            footer .footer-inner {
                flex-direction: column;
                gap: 1rem;
            }
        }
        @media (max-width: 480px) {
            .link-list {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .feedback-card {
                padding: 1.2rem;
            }
        }
        @media (min-width: 769px) {
            .hamburger {
                display: none !important;
            }
            nav {
                display: flex !important;
            }
            #nav-toggle {
                display: none !important;
            }
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .text-center {
            text-align: center;
        }
        .badge {
            display: inline-block;
            background: #e2e8f0;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #1e293b;
        }
        .badge-blue {
            background: #dbeafe;
            color: #1d4ed8;
        }
        .badge-amber {
            background: #fef3c7;
            color: #b45309;
        }
        .last-updated {
            display: inline-block;
            background: #f1f5f9;
            padding: 0.3rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            color: #475569;
            margin: 1rem 0 0.5rem 0;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            background: #fff;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 0.8rem 1rem;
            text-align: left;
            border-bottom: 1px solid #f1f5f9;
        }
        th {
            background: #f8fafc;
            font-weight: 600;
            color: #0f172a;
        }
        tr:hover td {
            background: #f8fafc;
        }
        blockquote {
            border-left: 4px solid #3b82f6;
            padding: 0.8rem 1.2rem;
            margin: 1.5rem 0;
            background: #f1f5f9;
            border-radius: 0 10px 10px 0;
            font-style: italic;
            color: #334155;
        }
        blockquote strong {
            color: #0f172a;
        }