*, *::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: #f5f7fc;
            color: #1e2a3a;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a { color: #0d6b8a; text-decoration: none; transition: color 0.2s; }
        a:hover { color: #f0a500; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; border-radius: 12px; }
        h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; color: #0b2a3c; }
        h1 { font-size: 2.4rem; margin-bottom: 1rem; }
        h2 { font-size: 1.8rem; margin: 2.5rem 0 1rem; border-bottom: 3px solid #0d6b8a; padding-bottom: 0.4rem; }
        h3 { font-size: 1.35rem; margin: 1.8rem 0 0.8rem; color: #1a4b5e; }
        h4 { font-size: 1.1rem; margin: 1.2rem 0 0.5rem; color: #2a5f72; }
        p { margin-bottom: 1.2rem; }
        ul, ol { margin: 1rem 0 1.5rem 1.8rem; }
        li { margin-bottom: 0.5rem; }
        blockquote {
            border-left: 5px solid #0d6b8a;
            background: #eaf2f8;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #1e3a4a;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0,0,0,0.06);
        }
        th, td { padding: 0.9rem 1rem; text-align: left; border-bottom: 1px solid #e0e8f0; }
        th { background: #0d6b8a; color: #fff; font-weight: 600; }
        tr:last-child td { border-bottom: none; }
        tr:hover td { background: #f0f7fb; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
        .btn {
            display: inline-block;
            background: #0d6b8a;
            color: #fff;
            padding: 0.6rem 1.4rem;
            border-radius: 30px;
            font-weight: 600;
            transition: background 0.3s, transform 0.2s;
            border: none;
            cursor: pointer;
        }
        .btn:hover { background: #f0a500; color: #fff; transform: translateY(-2px); text-decoration: none; }
        .site-header {
            background: linear-gradient(135deg, #0b2a3c 0%, #1a4b5e 100%);
            color: #fff;
            padding: 0.8rem 0;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #f0c040;
            letter-spacing: 0.5px;
            text-shadow: 2px 2px 0 rgba(0,0,0,0.3);
            transition: transform 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo:hover { transform: scale(1.02); text-decoration: none; color: #f0c040; }
        .my-logo i { font-size: 1.6rem; color: #ffd966; }
        .nav-wrapper { display: flex; align-items: center; gap: 1.2rem; }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 1.2rem;
            margin: 0;
        }
        .nav-list li a {
            color: #e0edf5;
            font-weight: 500;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: border-color 0.3s, color 0.3s;
            font-size: 0.95rem;
        }
        .nav-list li a:hover { color: #f0c040; border-bottom-color: #f0c040; text-decoration: none; }
        .hamburger { display: none; flex-direction: column; cursor: pointer; gap: 5px; padding: 4px; }
        .hamburger span { width: 28px; height: 3px; background: #fff; border-radius: 3px; transition: 0.3s; }
        #nav-toggle { display: none; }
        .breadcrumb {
            background: #e8eef5;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            color: #4a5a6a;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            margin: 0;
        }
        .breadcrumb li+li::before { content: "›"; margin-right: 0.6rem; color: #8a9aaa; }
        .breadcrumb a { color: #0d6b8a; }
        .breadcrumb .current { color: #2a5f72; font-weight: 600; }
        main { flex: 1; padding: 2.5rem 0; }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        .article-body { background: #fff; padding: 2.5rem; border-radius: 20px; box-shadow: 0 4px 24px rgba(0,0,0,0.04); }
        .sidebar { background: #fff; padding: 2rem; border-radius: 20px; box-shadow: 0 4px 24px rgba(0,0,0,0.04); height: fit-content; position: sticky; top: 90px; }
        .search-box {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 2rem;
            background: #f0f5fa;
            padding: 0.3rem;
            border-radius: 40px;
        }
        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0.6rem 1rem;
            font-size: 1rem;
            outline: none;
            border-radius: 40px;
        }
        .search-box button {
            background: #0d6b8a;
            color: #fff;
            border: none;
            padding: 0.6rem 1.4rem;
            border-radius: 40px;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-box button:hover { background: #f0a500; }
        .comment-section, .score-section {
            margin-top: 2.5rem;
            padding-top: 2rem;
            border-top: 2px solid #e0e8f0;
        }
        .comment-section h3, .score-section h3 { margin-top: 0; }
        .comment-form, .score-form { display: flex; flex-direction: column; gap: 1rem; margin-top: 1rem; }
        .comment-form textarea, .comment-form input, .score-form select, .score-form button {
            padding: 0.8rem 1rem;
            border: 2px solid #dde4ec;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.3s;
        }
        .comment-form textarea:focus, .comment-form input:focus, .score-form select:focus { border-color: #0d6b8a; outline: none; }
        .comment-form textarea { min-height: 100px; resize: vertical; }
        .score-form select { background: #fff; cursor: pointer; }
        .star-display { display: flex; gap: 0.3rem; font-size: 1.8rem; color: #f0c040; margin: 0.5rem 0; }
        .sidebar-links { list-style: none; margin: 1rem 0 0; }
        .sidebar-links li { margin-bottom: 0.7rem; padding-left: 1rem; border-left: 3px solid #0d6b8a; }
        .sidebar-links a { font-weight: 500; }
        .featured-image { margin: 1.8rem 0; border-radius: 16px; overflow: hidden; box-shadow: 0 6px 24px rgba(0,0,0,0.08); }
        .featured-image figcaption { background: #eaf2f8; padding: 0.8rem 1.2rem; font-size: 0.9rem; color: #2a5a6a; }
        .site-footer {
            background: #0b2a3c;
            color: #c0d0dd;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-inner { display: grid; grid-template-columns: 2fr 1fr; gap: 2.5rem; }
        .footer-inner h4 { color: #f0c040; margin-bottom: 1rem; }
        friend-link { display: block; margin: 0.5rem 0; }
        friend-link a { color: #8fc8e0; }
        friend-link a:hover { color: #f0c040; }
        .copyright { text-align: center; padding-top: 1.5rem; margin-top: 1.5rem; border-top: 1px solid #1a4b5e; font-size: 0.9rem; }
        .update-badge {
            display: inline-block;
            background: #f0a500;
            color: #0b2a3c;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        @media (max-width: 992px) {
            .content-grid { grid-template-columns: 1fr; }
            .sidebar { position: static; }
            .footer-inner { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .nav-list {
                display: none;
                flex-direction: column;
                background: #1a4b5e;
                position: absolute;
                top: 62px;
                left: 0;
                right: 0;
                padding: 1.2rem 1.5rem;
                border-radius: 0 0 16px 16px;
                box-shadow: 0 8px 30px rgba(0,0,0,0.2);
                gap: 0.6rem;
            }
            #nav-toggle:checked ~ .nav-list { display: flex; }
            .header-inner { position: relative; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.4rem; }
            .article-body { padding: 1.5rem; }
            .sidebar { padding: 1.5rem; }
            table { font-size: 0.9rem; }
            th, td { padding: 0.6rem 0.8rem; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 0.8rem; }
            .article-body { padding: 1rem; }
            .my-logo { font-size: 1.3rem; }
            .my-logo i { font-size: 1.2rem; }
            .search-box { flex-direction: column; border-radius: 16px; }
            .search-box button { width: 100%; }
        }
        .skip-link { position: absolute; top: -100px; left: 0; background: #f0c040; color: #0b2a3c; padding: 0.6rem 1.2rem; z-index: 200; font-weight: 700; border-radius: 0 0 8px 0; }
        .skip-link:focus { top: 0; }
        :focus-visible { outline: 3px solid #f0a500; outline-offset: 2px; }
        .high-contrast { background: #fff !important; color: #000 !important; }