*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f8fafc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0 1.25rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #0369a1;
            text-decoration: underline;
            transition: color 0.2s ease, opacity 0.2s ease;
        }
        a:hover {
            color: #0c4a6e;
            opacity: 0.85;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.35rem;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 0.5rem;
        }
        header {
            padding: 1.25rem 0 0.5rem 0;
            border-bottom: 3px solid #e2e8f0;
            margin-bottom: 1.25rem;
            background: #ffffff;
            border-radius: 0 0 16px 16px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
            position: relative;
            z-index: 20;
        }
        .header-top {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem 1rem;
        }
        .my-logo {
            font-size: 2.1rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #0f172a, #1e3a5f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            line-height: 1.2;
        }
        .my-logo i {
            background: none;
            -webkit-text-fill-color: #eab308;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 0.5rem 1.25rem;
            flex-wrap: wrap;
        }
        .nav-menu {
            display: flex;
            gap: 0.25rem 1rem;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .nav-menu li a {
            display: inline-block;
            padding: 0.4rem 0.6rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: #1e293b;
            text-decoration: none;
            border-radius: 8px;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .nav-menu li a:hover,
        .nav-menu li a.active {
            background: #e2e8f0;
            color: #0f172a;
        }
        .nav-menu li a i {
            margin-right: 0.3rem;
            color: #eab308;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1e293b;
            cursor: pointer;
            padding: 0.25rem 0.5rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #e2e8f0;
        }
        .nav-check {
            display: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.25rem 0.5rem;
            font-size: 0.85rem;
            color: #64748b;
            padding: 0.6rem 0 0.2rem 0;
            margin-top: 0.5rem;
            border-top: 1px solid #e9edf2;
        }
        .breadcrumb a {
            color: #0369a1;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span.sep {
            color: #94a3b8;
            margin: 0 0.2rem;
        }
        main {
            padding: 1.25rem 0 2.5rem 0;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 0 0 0.75rem 0;
            color: #0f172a;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 2.5rem 0 0.75rem 0;
            color: #0f172a;
            border-left: 6px solid #eab308;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 1.75rem 0 0.5rem 0;
            color: #1e293b;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 1.25rem 0 0.35rem 0;
            color: #334155;
        }
        p {
            margin: 0 0 1.2rem 0;
            font-size: 1.05rem;
        }
        .last-updated {
            display: inline-block;
            background: #e2e8f0;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #475569;
            margin-bottom: 1rem;
        }
        .last-updated i {
            margin-right: 0.4rem;
        }
        .feature-image-wrap {
            margin: 1.8rem 0 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            background: #e2e8f0;
        }
        .feature-image-wrap img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .feature-image-wrap figcaption {
            padding: 0.6rem 1.2rem;
            font-size: 0.9rem;
            color: #475569;
            background: #f1f5f9;
            font-style: italic;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0 2rem 0;
            border-radius: 12px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.98rem;
            background: #ffffff;
        }
        table thead {
            background: #0f172a;
            color: #ffffff;
        }
        table th {
            padding: 0.8rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        table td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #e2e8f0;
        }
        table tbody tr:hover {
            background: #f1f5f9;
        }
        table tbody tr:nth-child(even) {
            background: #f8fafc;
        }
        .form-card {
            background: #ffffff;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            margin: 2rem 0;
            border: 1px solid #e2e8f0;
        }
        .form-card h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 500;
            margin-bottom: 0.3rem;
            color: #1e293b;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1px solid #cbd5e1;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.2s, box-shadow 0.2s;
            background: #f8fafc;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #eab308;
            box-shadow: 0 0 0 3px rgba(234, 179, 8, 0.2);
            background: #ffffff;
        }
        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.6rem;
            background: #0f172a;
            color: #ffffff;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            text-decoration: none;
        }
        .btn:hover {
            background: #1e3a5f;
            transform: scale(1.02);
        }
        .btn i {
            font-size: 1rem;
        }
        .btn-secondary {
            background: #e2e8f0;
            color: #1e293b;
        }
        .btn-secondary:hover {
            background: #cbd5e1;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            font-size: 1.8rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #cbd5e1;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #eab308;
        }
        .link-list-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 0.6rem 1rem;
            margin: 1.2rem 0;
            padding: 0;
            list-style: none;
        }
        .link-list-grid li a {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 0.5rem;
            border-radius: 6px;
            background: #f1f5f9;
            text-decoration: none;
            color: #0369a1;
            font-size: 0.95rem;
            transition: background 0.2s;
        }
        .link-list-grid li a:hover {
            background: #e2e8f0;
            color: #0c4a6e;
        }
        footer {
            border-top: 3px solid #e2e8f0;
            padding: 2rem 0 1.5rem 0;
            margin-top: 2rem;
            background: #ffffff;
            border-radius: 16px 16px 0 0;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.5rem 2rem;
        }
        friend-link {
            display: block;
            font-style: normal;
        }
        friend-link a {
            display: inline-block;
            margin: 0.25rem 0.75rem 0.25rem 0;
            color: #0369a1;
            text-decoration: none;
            font-weight: 500;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            font-size: 0.9rem;
            color: #64748b;
            margin-top: 1.2rem;
            text-align: center;
            border-top: 1px solid #e9edf2;
            padding-top: 1.2rem;
        }
        .copyright i {
            margin: 0 0.25rem;
        }
        @media (max-width: 820px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            body {
                padding: 0 0.75rem;
            }
            .form-card {
                padding: 1.2rem 1rem;
            }
            .header-top {
                flex-wrap: wrap;
            }
            .nav-wrapper {
                width: 100%;
            }
            .hamburger {
                display: inline-block;
                margin-left: auto;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #ffffff;
                padding: 0.75rem 0.5rem;
                border-radius: 12px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                border: 1px solid #e2e8f0;
                margin-top: 0.5rem;
            }
            .nav-menu li a {
                padding: 0.6rem 1rem;
                display: block;
            }
            .nav-check:checked+.hamburger+.nav-menu {
                display: flex;
            }
            .nav-check:checked~.nav-menu {
                display: flex !important;
            }
            .nav-menu {
                display: none;
            }
            #navToggle:checked~.nav-menu {
                display: flex;
            }
            .nav-menu {
                display: none;
            }
            #navToggle:checked+.hamburger+.nav-menu {
                display: flex;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.6rem;
            }
            .my-logo i {
                font-size: 1.4rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            .link-list-grid {
                grid-template-columns: 1fr 1fr;
            }
            table {
                font-size: 0.85rem;
            }
            table th,
            table td {
                padding: 0.5rem 0.6rem;
            }
        }
        .text-highlight {
            background: linear-gradient(120deg, #fef9c3 0%, #fef9c3 40%, transparent 80%);
            padding: 0 0.3rem;
            font-weight: 600;
        }
        .badge {
            display: inline-block;
            background: #eab308;
            color: #0f172a;
            padding: 0.15rem 0.7rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.4rem;
            margin-right: 0.3rem;
        }
        .section-divider {
            border: none;
            height: 2px;
            background: linear-gradient(to right, #e2e8f0, #eab308, #e2e8f0);
            margin: 2.5rem 0;
            opacity: 0.4;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1.25rem;
            margin: 1.5rem 0;
        }
        .stat-card {
            background: #ffffff;
            padding: 1.25rem 1.2rem;
            border-radius: 14px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
            border: 1px solid #e9edf2;
            text-align: center;
        }
        .stat-card .number {
            font-size: 2.4rem;
            font-weight: 800;
            color: #0f172a;
            line-height: 1.2;
        }
        .stat-card .label {
            font-size: 0.95rem;
            color: #64748b;
            margin-top: 0.2rem;
        }
        .stat-card i {
            font-size: 1.8rem;
            color: #eab308;
            margin-bottom: 0.3rem;
        }
        .insight-box {
            background: #f1f5f9;
            border-left: 6px solid #eab308;
            padding: 1.2rem 1.5rem;
            border-radius: 12px;
            margin: 1.5rem 0;
        }
        .insight-box p:last-child {
            margin-bottom: 0;
        }
        .nav-check {
            display: none;
        }
        .hamburger {
            display: none;
        }
        @media (max-width: 820px) {
            .hamburger {
                display: inline-block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #ffffff;
                padding: 0.75rem 0.5rem;
                border-radius: 12px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                border: 1px solid #e2e8f0;
                margin-top: 0.5rem;
            }
            .nav-check:checked~.nav-menu {
                display: flex !important;
            }
            .nav-wrapper {
                flex-wrap: wrap;
            }
        }
        .anchor-offset {
            scroll-margin-top: 80px;
        }