*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f4f7fb;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #1a5f7a;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #e8aa2c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.35rem;
        }
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0b2a3b 0%, #1a4a5e 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: 1px;
            background: linear-gradient(135deg, #f5d77b, #e8aa2c);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            transition: opacity 0.2s;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: #e8aa2c;
            margin-right: 0.3rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            font-size: 1.5rem;
            padding: 0.4rem 0.7rem;
            border-radius: 6px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .primary-nav {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .primary-nav a {
            color: #eef6fa;
            padding: 0.5rem 0.9rem;
            border-radius: 6px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .primary-nav a:hover,
        .primary-nav a:focus {
            background: rgba(232, 170, 44, 0.2);
            color: #f5d77b;
            text-decoration: none;
        }
        .primary-nav a.active {
            background: rgba(232, 170, 44, 0.25);
            color: #f5d77b;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d6dee7;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #7a8a9e;
        }
        .breadcrumb a {
            color: #1a5f7a;
        }
        .breadcrumb .current {
            color: #4a5a6a;
            font-weight: 500;
        }
        main {
            padding: 2rem 0 3rem;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0b2a3b;
            margin: 0 0 0.8rem;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 2.4rem 0 1rem;
            color: #0b2a3b;
            border-bottom: 3px solid #e8aa2c;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.45rem;
            font-weight: 600;
            margin: 1.8rem 0 0.8rem;
            color: #1a4a5e;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 1.2rem 0 0.5rem;
            color: #2d5f73;
        }
        p {
            margin: 0 0 1.2rem;
            font-size: 1.05rem;
        }
        .article-content {
            background: #fff;
            border-radius: 16px;
            padding: 2rem 2.4rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
        }
        strong,
        b {
            color: #0b2a3b;
            font-weight: 700;
        }
        .featured-image {
            margin: 1.8rem 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            background: #eef2f6;
        }
        .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.7rem 1.2rem;
            font-size: 0.9rem;
            color: #4a5a6a;
            background: #f8fafc;
            font-style: italic;
        }
        .search-section {
            background: #eef4f9;
            border-radius: 14px;
            padding: 1.8rem 2rem;
            margin: 2rem 0;
            border: 1px solid #d6e0ea;
        }
        .search-section form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
        }
        .search-section input[type="text"] {
            flex: 1 1 240px;
            padding: 0.8rem 1.2rem;
            border: 1px solid #c6d2df;
            border-radius: 40px;
            font-size: 1rem;
            background: #fff;
            transition: 0.2s;
        }
        .search-section input[type="text"]:focus {
            outline: none;
            border-color: #1a5f7a;
            box-shadow: 0 0 0 3px rgba(26, 95, 122, 0.15);
        }
        .search-section button {
            background: #1a5f7a;
            color: #fff;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-section button:hover {
            background: #0b2a3b;
            transform: translateY(-1px);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2.4rem 0;
        }
        .feedback-card {
            background: #f8fafc;
            border-radius: 14px;
            padding: 1.8rem 2rem;
            border: 1px solid #e2e9f0;
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }
        .feedback-card textarea,
        .feedback-card input[type="text"] {
            padding: 0.7rem 1rem;
            border: 1px solid #c6d2df;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            background: #fff;
            resize: vertical;
            transition: 0.2s;
        }
        .feedback-card textarea:focus,
        .feedback-card input[type="text"]:focus {
            outline: none;
            border-color: #1a5f7a;
            box-shadow: 0 0 0 3px rgba(26, 95, 122, 0.1);
        }
        .feedback-card button {
            align-self: flex-start;
            background: #1a5f7a;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .feedback-card button:hover {
            background: #0b2a3b;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #d0d8e0;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            transition: color 0.15s;
            color: #d0d8e0;
            cursor: pointer;
        }
        .star-rating label i {
            font-size: 1.8rem;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #e8aa2c;
        }
        .context-links {
            background: #f0f5fa;
            border-left: 4px solid #e8aa2c;
            padding: 1.4rem 1.8rem;
            border-radius: 0 12px 12px 0;
            margin: 2rem 0;
        }
        .context-links h4 {
            margin-top: 0;
            font-size: 1.1rem;
            color: #0b2a3b;
        }
        .context-links ul {
            list-style: none;
            padding: 0;
            margin: 0.6rem 0 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.4rem;
        }
        .context-links li a {
            font-weight: 500;
        }
        .context-links li a::before {
            content: "♠ ";
            color: #1a5f7a;
        }
        .site-footer {
            background: #0b2a3b;
            color: #d6e0ea;
            padding: 2.8rem 0 1.5rem;
            margin-top: 2rem;
        }
        .site-footer a {
            color: #b8d0dd;
        }
        .site-footer a:hover {
            color: #f5d77b;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .footer-inner h4 {
            color: #f5d77b;
            margin-bottom: 0.8rem;
            font-size: 1.1rem;
            border: none;
        }
        friend-link {
            display: block;
            padding: 0.3rem 0;
        }
        friend-link a {
            display: inline-block;
            padding: 0.25rem 0;
        }
        .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            margin-top: 1rem;
            text-align: center;
            font-size: 0.9rem;
            color: #9aafc0;
        }
        @media (max-width: 860px) {
            .nav-toggle {
                display: block;
            }
            .primary-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 1rem 0 0.4rem;
                gap: 0.2rem;
            }
            .primary-nav.open {
                display: flex;
            }
            .primary-nav a {
                padding: 0.6rem 1rem;
                border-radius: 8px;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .article-content {
                padding: 1.2rem 1.2rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .header-inner {
                gap: 0.5rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.9rem;
            }
            .article-content {
                padding: 0.9rem 0.9rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            .search-section {
                padding: 1.2rem;
            }
            .feedback-card {
                padding: 1.2rem;
            }
            .context-links ul {
                flex-direction: column;
                gap: 0.4rem;
            }
        }
        .last-updated {
            font-size: 0.9rem;
            color: #6a7a8a;
            margin-bottom: 0.4rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .last-updated i {
            color: #1a5f7a;
        }
        .divider {
            border: none;
            border-top: 2px dashed #d6e0ea;
            margin: 2rem 0;
        }
        .primary-nav {
            transition: all 0.25s ease;
        }
        .schema-hidden {
            display: none;
        }