*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            background: #f4f7fb;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #2b5f8a;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #1a3b5a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.25;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
            color: #0f1a2c;
        }
        h1 {
            font-size: 2.4rem;
            border-left: 6px solid #e85d3a;
            padding-left: 1rem;
            margin-top: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 2px solid #dce3ed;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.15rem;
            color: #2b4a6e;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 30px rgba(0, 0, 0, 0.05);
            border-radius: 20px 20px 0 0;
            padding: 1.5rem 2rem 2rem;
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0 0.8rem;
            border-bottom: 1px solid #e2e8f0;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #0f1a2c;
            background: linear-gradient(145deg, #1e3a5f, #e85d3a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .my-logo i {
            font-size: 1.6rem;
            -webkit-text-fill-color: #e85d3a;
            color: #e85d3a;
        }
        .my-logo small {
            font-size: 0.65rem;
            font-weight: 400;
            -webkit-text-fill-color: #5a6e7e;
            color: #5a6e7e;
            letter-spacing: 0.3px;
            display: block;
            line-height: 1;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        nav a {
            font-weight: 500;
            color: #1a2a3a;
            padding: 0.3rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
            font-size: 0.95rem;
        }
        nav a:hover {
            background: #eef3f9;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.6rem;
            background: none;
            border: none;
            cursor: pointer;
            color: #1a2a3a;
            padding: 0.2rem 0.5rem;
        }
        .nav-menu {
            display: flex;
            gap: 1.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .breadcrumb {
            padding: 0.6rem 0 0.2rem;
            font-size: 0.85rem;
            color: #5a6e7e;
            width: 100%;
            margin-top: 0.2rem;
        }
        .breadcrumb a {
            color: #2b5f8a;
        }
        .breadcrumb span {
            color: #8a9aa8;
        }
        .search-box {
            display: flex;
            gap: 0.3rem;
            max-width: 360px;
            margin: 1.2rem 0 0.8rem;
        }
        .search-box input {
            flex: 1;
            padding: 0.6rem 1rem;
            border: 2px solid #dce3ed;
            border-radius: 30px;
            font-size: 0.9rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-box input:focus {
            border-color: #e85d3a;
        }
        .search-box button {
            background: #1e3a5f;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0 1.2rem;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-box button:hover {
            background: #e85d3a;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.8rem;
            margin: 2rem 0;
        }
        .card {
            background: #f9fcff;
            border-radius: 18px;
            padding: 1.5rem 1.2rem;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
            border: 1px solid #eef3f9;
            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 i {
            font-size: 2rem;
            color: #e85d3a;
            margin-bottom: 0.6rem;
        }
        .card h3 {
            margin-top: 0.2rem;
            margin-bottom: 0.4rem;
        }
        .two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2rem 0;
        }
        .featured-image {
            border-radius: 18px;
            overflow: hidden;
            margin: 2rem 0;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.6rem 1rem;
            background: #f1f6fc;
            font-size: 0.85rem;
            color: #3a4e62;
        }
        .form-block {
            background: #f9fcff;
            border-radius: 18px;
            padding: 1.5rem 1.8rem;
            border: 1px solid #eef3f9;
            margin: 2rem 0;
        }
        .form-block h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            font-size: 0.95rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.6rem 1rem;
            border: 2px solid #dce3ed;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border 0.2s;
            background: #fff;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #e85d3a;
            outline: none;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: #1e3a5f;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .btn:hover {
            background: #e85d3a;
            transform: scale(1.02);
        }
        .btn-secondary {
            background: #e2e8f0;
            color: #1a2a3a;
        }
        .btn-secondary:hover {
            background: #cbd5e1;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #dce3ed;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f4b942;
        }
        footer {
            margin-top: 3rem;
            padding-top: 1.8rem;
            border-top: 1px solid #e2e8f0;
            font-size: 0.9rem;
            color: #4a5a6a;
        }
        footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.5rem;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem 2rem;
            background: #f1f6fc;
            padding: 1rem 1.5rem;
            border-radius: 16px;
            margin-bottom: 1.2rem;
        }
        friend-link a {
            font-weight: 500;
        }
        .copyright {
            text-align: center;
            padding: 1rem 0 0.2rem;
            font-size: 0.82rem;
            color: #6a7a8a;
            width: 100%;
        }
        @media (max-width: 768px) {
            .container {
                padding: 1rem 1rem 1.5rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .two-col {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .hamburger {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #fff;
                padding: 1rem 0 0.8rem;
                gap: 0.6rem;
                border-top: 1px solid #e2e8f0;
                margin-top: 0.6rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.4rem 0.8rem;
                border-radius: 10px;
                background: #f4f7fb;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .search-box {
                max-width: 100%;
            }
            footer .footer-inner {
                flex-direction: column;
                align-items: center;
            }
            friend-link {
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            body {
                padding: 0 0.4rem;
            }
            .container {
                padding: 0.8rem 0.8rem 1.2rem;
                border-radius: 12px;
            }
            h1 {
                font-size: 1.5rem;
                padding-left: 0.6rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }
        .badge {
            display: inline-block;
            background: #eef3f9;
            padding: 0.15rem 0.8rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            color: #1e3a5f;
        }
        .highlight {
            background: #fff6e8;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
        }
        .emoji-big {
            font-size: 1.6rem;
            vertical-align: middle;
        }
        .last-updated {
            font-size: 0.85rem;
            color: #6a7a8a;
            margin-top: 0.2rem;
            margin-bottom: 1.2rem;
        }
        .last-updated i {
            margin-right: 0.3rem;
        }
        blockquote {
            border-left: 4px solid #e85d3a;
            background: #f9fcff;
            padding: 0.8rem 1.2rem;
            margin: 1.2rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2a3e52;
        }
        .toc {
            background: #f1f6fc;
            border-radius: 16px;
            padding: 1.2rem 1.5rem;
            margin: 1.5rem 0;
        }
        .toc ul {
            list-style: none;
            padding-left: 0;
        }
        .toc ul li {
            padding: 0.2rem 0;
        }
        .toc ul li a {
            font-weight: 500;
        }
        .toc ul ul {
            padding-left: 1.5rem;
        }
        .inline-list {
            list-style: none;
            padding-left: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.5rem;
        }
        .inline-list li::before {
            content: "▸ ";
            color: #e85d3a;
            font-weight: 700;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 0.6rem 0.8rem;
            border-bottom: 1px solid #e2e8f0;
            text-align: left;
        }
        th {
            background: #f1f6fc;
            font-weight: 700;
            color: #0f1a2c;
        }
        tr:hover td {
            background: #f9fcff;
        }