*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f7fa;
            color: #1a1e2b;
            line-height: 1.7;
            padding: 0 16px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #0057b3;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #ff6b00;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.4rem;
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            margin-top: 1.6rem;
            margin-bottom: 0.6rem;
            font-weight: 700;
            color: #0b1a2f;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0.4rem;
        }
        h2 {
            font-size: 1.7rem;
            border-bottom: 3px solid #ff6b00;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.3rem;
            color: #1f3a5f;
        }
        h4 {
            font-size: 1.05rem;
            color: #2a4a7a;
        }
        p {
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #fff;
            border-radius: 20px 20px 0 0;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.04);
            padding: 0 24px 40px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 12px 24px;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.1rem;
            }
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0 10px;
            border-bottom: 2px solid #eef0f5;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            background: linear-gradient(135deg, #ff6b00, #ff9a3c);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            -webkit-text-fill-color: #ff6b00;
            font-size: 1.7rem;
        }
        .my-logo small {
            font-size: 0.75rem;
            font-weight: 400;
            -webkit-text-fill-color: #4a5b7a;
            display: block;
            letter-spacing: 0.3px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1a1e2b;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #f0f2f6;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 4px 18px;
            align-items: center;
        }
        .main-nav a {
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 0;
            color: #1a2b44;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #ff6b00;
            transition: width 0.25s;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a:hover {
            text-decoration: none;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 12px 0 4px;
                gap: 2px;
                border-top: 1px solid #eef0f5;
                margin-top: 10px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 10px 0;
                border-bottom: 1px solid #f0f2f6;
                width: 100%;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px 10px;
            font-size: 0.85rem;
            padding: 12px 0 6px;
            color: #5b6f8c;
        }
        .breadcrumb a {
            color: #0057b3;
        }
        .breadcrumb a:hover {
            color: #ff6b00;
        }
        .breadcrumb span.sep {
            color: #b0bcca;
        }
        .search-section {
            background: linear-gradient(135deg, #f7f9fc, #eef2f8);
            border-radius: 16px;
            padding: 24px 20px;
            margin: 20px 0 28px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            justify-content: space-between;
        }
        .search-section label {
            font-weight: 600;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            gap: 8px;
            color: #0b1a2f;
        }
        .search-form {
            display: flex;
            flex: 1 1 300px;
            gap: 0;
            border-radius: 40px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        }
        .search-form input {
            flex: 1;
            border: none;
            padding: 12px 18px;
            font-size: 0.95rem;
            outline: none;
            background: #fff;
            min-width: 0;
        }
        .search-form button {
            background: #ff6b00;
            color: #fff;
            border: none;
            padding: 12px 22px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
        }
        .search-form button:hover {
            background: #e55d00;
        }
        .featured-figure {
            margin: 28px 0 32px;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.07);
            background: #f0f3f9;
        }
        .featured-figure img {
            width: 100%;
            max-height: 520px;
            object-fit: cover;
        }
        .featured-figure figcaption {
            padding: 12px 18px;
            font-size: 0.9rem;
            color: #3f5678;
            background: #fafcff;
            border-top: 1px solid #e6eaf0;
        }
        .update-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #eef3fa;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #2f4a72;
            margin: 4px 0 18px;
        }
        .link-cluster {
            background: #fafcff;
            border: 1px solid #e6ecf5;
            border-radius: 14px;
            padding: 18px 22px;
            margin: 24px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
        }
        .link-cluster a {
            font-size: 0.92rem;
            background: #f0f4fc;
            padding: 4px 14px;
            border-radius: 30px;
            transition: background 0.2s, color 0.2s;
        }
        .link-cluster a:hover {
            background: #ff6b00;
            color: #fff;
            text-decoration: none;
        }
        .block-quote {
            background: #f4f8ff;
            border-left: 5px solid #ff6b00;
            padding: 18px 22px;
            margin: 24px 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #1f3450;
        }
        .block-quote cite {
            display: block;
            margin-top: 10px;
            font-style: normal;
            font-weight: 600;
            color: #0b1a2f;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 32px 0 20px;
        }
        @media (max-width: 640px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        .card-box {
            background: #f9fbfe;
            border: 1px solid #e6ecf5;
            border-radius: 16px;
            padding: 20px 22px 26px;
        }
        .card-box h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.2rem;
        }
        .card-box form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 10px;
        }
        .card-box form input,
        .card-box form textarea,
        .card-box form select {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid #d0d8e6;
            border-radius: 10px;
            font-size: 0.95rem;
            background: #fff;
            transition: border 0.2s;
            font-family: inherit;
        }
        .card-box form input:focus,
        .card-box form textarea:focus,
        .card-box form select:focus {
            border-color: #ff6b00;
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.12);
        }
        .card-box form textarea {
            min-height: 80px;
            resize: vertical;
        }
        .card-box form button {
            background: #ff6b00;
            color: #fff;
            border: none;
            padding: 12px 18px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .card-box form button:hover {
            background: #e55d00;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 6px;
            justify-content: flex-end;
            margin: 4px 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.7rem;
            color: #ccd6e4;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #ffb800;
        }
        friend-link {
            display: block;
            background: #f0f4fc;
            border-radius: 14px;
            padding: 20px 24px;
            margin: 28px 0 12px;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 12px;
            background: #fff;
            border-radius: 30px;
            border: 1px solid #d7e0ee;
            transition: all 0.2s;
        }
        friend-link a:hover {
            background: #ff6b00;
            color: #fff;
            border-color: #ff6b00;
            text-decoration: none;
        }
        .site-footer {
            border-top: 2px solid #eef0f5;
            padding: 24px 0 18px;
            margin-top: 20px;
            text-align: center;
            font-size: 0.88rem;
            color: #4f6587;
        }
        .site-footer .copy {
            margin-top: 8px;
            font-weight: 400;
        }
        @media (max-width: 480px) {
            .search-section {
                flex-direction: column;
                align-items: stretch;
            }
            .search-form button {
                padding: 12px 16px;
            }
            .block-quote {
                padding: 14px 16px;
            }
            .link-cluster {
                padding: 14px 16px;
            }
        }
        .schema-hidden {
            display: none;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .text-accent {
            color: #ff6b00;
        }
        .fw-600 {
            font-weight: 600;
        }
        .flex-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px 16px;
        }