*,
        *::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: #f8fafc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0 1rem;
            max-width: 1280px;
            margin: 0 auto;
        }
        a {
            color: #0f3b5e;
            text-decoration: none;
            transition: color .2s;
        }
        a:hover {
            color: #b91c1c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.3;
            color: #0c1e2f;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 1.2rem;
            border-left: 6px solid #b91c1c;
            padding-left: 1.2rem;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.4rem 0 1rem;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.35rem;
            margin: 1.8rem 0 0.75rem;
        }
        h4 {
            font-size: 1.1rem;
            margin: 1.2rem 0 0.5rem;
            color: #1e3a5f;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin-bottom: 1.2rem;
            padding-left: 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            background: #ffffff;
            border-radius: 24px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            padding: 1.5rem 2rem 2rem;
            margin: 1rem 0 2rem;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 0 0.8rem;
            border-bottom: 1px solid #e2e8f0;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #b91c1c, #1e3a5f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            text-decoration: none;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.85;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #1e293b;
            border-radius: 8px;
            font-size: 1.6rem;
            padding: 0.3rem 0.8rem;
            cursor: pointer;
            color: #1e293b;
            transition: background .2s;
        }
        .nav-toggle:hover {
            background: #e2e8f0;
        }
        .main-nav {
            display: flex;
            gap: 1.8rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color .2s;
        }
        .main-nav a:hover {
            border-bottom-color: #b91c1c;
            text-decoration: none;
        }
        .breadcrumb {
            font-size: 0.85rem;
            color: #64748b;
            padding: 0.8rem 0 0.2rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            list-style: none;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #94a3b8;
        }
        .breadcrumb a {
            color: #0f3b5e;
        }
        .breadcrumb a:hover {
            color: #b91c1c;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            max-width: 500px;
            margin: 1.8rem 0 1.2rem;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 160px;
            padding: 0.7rem 1rem;
            border: 2px solid #cbd5e1;
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: border-color .2s;
        }
        .search-form input:focus {
            border-color: #b91c1c;
        }
        .search-form button {
            background: #b91c1c;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.7rem 1.6rem;
            font-weight: 600;
            cursor: pointer;
            transition: background .2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #a01515;
        }
        .featured-image {
            margin: 2rem 0 2.2rem;
            border-radius: 16px;
            overflow: hidden;
            background: #e2e8f0;
        }
        .featured-image img {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.7rem 1rem;
            font-size: 0.9rem;
            color: #475569;
            background: #f1f5f9;
            font-style: italic;
        }
        .last-updated {
            display: inline-block;
            background: #f1f5f9;
            padding: 0.3rem 1rem;
            border-radius: 40px;
            font-size: 0.85rem;
            color: #475569;
            margin-bottom: 1.2rem;
        }
        .last-updated i {
            margin-right: 0.4rem;
        }
        .feedback-section {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            margin: 2.8rem 0 1.8rem;
            padding-top: 2rem;
            border-top: 2px solid #e2e8f0;
        }
        .feedback-card {
            flex: 1 1 280px;
            background: #f8fafc;
            padding: 1.6rem 1.8rem;
            border-radius: 16px;
            border: 1px solid #e2e8f0;
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.6rem;
        }
        .feedback-card textarea,
        .feedback-card input[type="text"],
        .feedback-card input[type="number"] {
            padding: 0.6rem 0.9rem;
            border: 2px solid #cbd5e1;
            border-radius: 10px;
            font-size: 0.95rem;
            outline: none;
            transition: border-color .2s;
            width: 100%;
        }
        .feedback-card textarea:focus,
        .feedback-card input:focus {
            border-color: #b91c1c;
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card button {
            background: #1e3a5f;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.65rem 1.5rem;
            font-weight: 600;
            cursor: pointer;
            transition: background .2s;
            align-self: flex-start;
        }
        .feedback-card button:hover {
            background: #0f2a44;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 0.3rem;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.6rem;
            color: #cbd5e1;
            cursor: pointer;
            transition: color .2s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f59e0b;
        }
        friend-link {
            display: block;
            margin: 2rem 0 0.8rem;
            padding: 1.2rem 1.6rem;
            background: #f1f5f9;
            border-radius: 16px;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.3rem 1.2rem 0.3rem 0;
            font-weight: 500;
        }
        .site-footer {
            border-top: 1px solid #e2e8f0;
            padding: 1.6rem 0 2rem;
            margin-top: 2rem;
            text-align: center;
            font-size: 0.9rem;
            color: #64748b;
        }
        .site-footer .copyright {
            margin-top: 0.6rem;
            font-size: 0.85rem;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.6rem;
            }
            .container {
                padding: 1rem 1rem 1.6rem;
            }
            h1 {
                font-size: 1.7rem;
                padding-left: 0.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .site-header {
                padding: 0.8rem 0;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.8rem;
                padding: 1rem 0 0.4rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                font-size: 1rem;
                padding: 0.4rem 0;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .search-form input {
                min-width: 120px;
            }
            .feedback-section {
                flex-direction: column;
                gap: 1.2rem;
            }
            .feedback-card {
                flex: 1 1 auto;
            }
            friend-link a {
                display: block;
                margin: 0.3rem 0;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0.8rem 0.8rem 1.2rem;
            }
            h1 {
                font-size: 1.4rem;
            }
            .search-form button span {
                display: none;
            }
            .search-form button i {
                margin: 0;
            }
        }
        .highlight {
            background: #fef9c3;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        .flex-between {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .text-muted {
            color: #64748b;
            font-size: 0.92rem;
        }