*,
        *::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, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #f8f9fc;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #4a6cf7;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus-visible {
            color: #2b4be0;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: #0b0f1a;
            font-weight: 700;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b0f1a 0%, #1a1f33 100%);
            color: #fff;
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f7971e, #ffd200);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none !important;
        }
        .my-logo:hover {
            opacity: 0.88;
            text-decoration: none !important;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #ffd200;
            margin-right: 6px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #eef2ff;
            padding: 8px 16px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
            text-decoration: none;
        }
        .main-nav a:hover,
        .main-nav a:focus-visible {
            background: rgba(255, 255, 255, 0.12);
            color: #ffd200;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-overlay {
            display: none;
        }
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid #e6e8f0;
            padding: 12px 0;
            font-size: 0.88rem;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #8e8fa5;
            margin-right: 6px;
            font-size: 1.1rem;
        }
        .breadcrumb a {
            color: #4a6cf7;
        }
        .breadcrumb .current {
            color: #5e5f75;
            font-weight: 500;
        }
        .hero {
            padding: 48px 0 32px;
            background: #fff;
            border-bottom: 1px solid #eef0f7;
        }
        .hero h1 {
            font-size: 2.8rem;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #0b0f1a 0%, #2b4be0 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero .subtitle {
            font-size: 1.15rem;
            color: #4a4b62;
            max-width: 780px;
        }
        .hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 16px;
            font-size: 0.92rem;
            color: #5e5f75;
        }
        .hero .meta i {
            margin-right: 6px;
            color: #4a6cf7;
        }
        .last-updated {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #eef2ff;
            padding: 4px 16px 4px 12px;
            border-radius: 40px;
            font-size: 0.82rem;
            color: #2b4be0;
            font-weight: 500;
        }
        .content-wrap {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
        }
        .main-content h2 {
            font-size: 2rem;
            margin: 48px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #eef0f7;
        }
        .main-content h3 {
            font-size: 1.45rem;
            margin: 36px 0 12px;
            color: #1a1f33;
        }
        .main-content h4 {
            font-size: 1.15rem;
            margin: 28px 0 8px;
            color: #2b3a6b;
            font-weight: 600;
        }
        .main-content p {
            margin-bottom: 1.2rem;
            color: #2c2d3a;
        }
        .main-content ul,
        .main-content ol {
            margin-bottom: 1.2rem;
            color: #2c2d3a;
        }
        .main-content li {
            margin-bottom: 6px;
        }
        .main-content blockquote {
            border-left: 4px solid #4a6cf7;
            background: #f0f3ff;
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #1e1e3a;
        }
        .main-content blockquote strong {
            color: #0b0f1a;
        }
        .highlight-box {
            background: linear-gradient(135deg, #f7f9ff, #eef2ff);
            border: 1px solid #d6defa;
            border-radius: 16px;
            padding: 24px 28px;
            margin: 28px 0;
        }
        .highlight-box h4 {
            margin-top: 0;
        }
        .featured-image {
            margin: 32px 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
        }
        .featured-image figcaption {
            padding: 12px 16px;
            background: #f7f8fc;
            font-size: 0.85rem;
            color: #5e5f75;
            border-top: 1px solid #e6e8f0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            margin-bottom: 24px;
            border: 1px solid #e6e8f0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            border-bottom: 2px solid #eef0f7;
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 8px;
        }
        .sidebar-card li a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
            font-size: 0.9rem;
        }
        .sidebar-card li a i {
            color: #4a6cf7;
            width: 18px;
            text-align: center;
            font-size: 0.8rem;
        }
        .search-form {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 180px;
            padding: 10px 16px;
            border: 2px solid #e0e3ef;
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.25s;
        }
        .search-form input:focus {
            border-color: #4a6cf7;
        }
        .search-form button {
            background: #4a6cf7;
            color: #fff;
            border: none;
            padding: 10px 22px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .search-form button:hover {
            background: #2b4be0;
            transform: scale(1.02);
        }
        .interact-section {
            background: #fff;
            border-radius: 20px;
            padding: 32px 36px;
            margin-top: 48px;
            border: 1px solid #e6e8f0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
        }
        .interact-section h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
        }
        .comment-form,
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-bottom: 28px;
        }
        .comment-form textarea,
        .comment-form input,
        .rating-form input,
        .rating-form select {
            padding: 12px 16px;
            border: 2px solid #e0e3ef;
            border-radius: 12px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.25s;
            font-family: inherit;
        }
        .comment-form textarea:focus,
        .comment-form input:focus,
        .rating-form input:focus,
        .rating-form select:focus {
            border-color: #4a6cf7;
        }
        .comment-form textarea {
            min-height: 110px;
            resize: vertical;
        }
        .comment-form button,
        .rating-form button {
            align-self: flex-start;
            background: #0b0f1a;
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comment-form button:hover,
        .rating-form button:hover {
            background: #2b4be0;
            transform: scale(1.02);
        }
        .rating-stars {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #e0e3ef;
            cursor: pointer;
            user-select: none;
        }
        .rating-stars .star.active {
            color: #ffc107;
        }
        .rating-stars .star {
            transition: color 0.15s, transform 0.15s;
        }
        .rating-stars .star:hover {
            transform: scale(1.2);
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            padding: 16px 0;
            margin-top: 16px;
            border-top: 1px solid #e6e8f0;
        }
        friend-link a {
            font-size: 0.9rem;
            color: #4a6cf7;
            padding: 4px 0;
        }
        friend-link a:hover {
            color: #2b4be0;
        }
        .site-footer {
            background: #0b0f1a;
            color: #b0b5cf;
            padding: 32px 0 20px;
            font-size: 0.88rem;
        }
        .site-footer .footer-inner {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .site-footer .copyright {
            text-align: center;
            color: #7a7f9a;
            font-size: 0.82rem;
        }
        .site-footer .copyright a {
            color: #b0b5cf;
        }
        .site-footer .copyright a:hover {
            color: #fff;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1a1f33;
                padding: 16px 0 20px;
                margin-top: 12px;
                border-radius: 16px;
                gap: 2px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 20px;
                width: 100%;
                border-radius: 0;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero .subtitle {
                font-size: 1rem;
            }
            .interact-section {
                padding: 20px 18px;
            }
            .search-form input {
                min-width: 140px;
            }
            .header-inner {
                position: relative;
            }
            .nav-overlay {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.3);
                z-index: -1;
            }
            .nav-overlay.show {
                display: block;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .container {
                padding: 0 14px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .sidebar-card {
                padding: 16px;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .text-muted {
            color: #5e5f75;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mb-1 {
            margin-bottom: 8px;
        }
        .flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .gap-2 {
            gap: 12px;
        }
        .items-center {
            align-items: center;
        }
        .sidebar-card a,
        .main-content a {
            word-break: break-word;
        }
        .sidebar-card li a:hover i {
            transform: translateX(3px);
            transition: transform 0.2s;
        }