*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #0b1a2e;
            --primary-light: #132d4a;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --bg: #f4f7fb;
            --card-bg: #ffffff;
            --text: #1e293b;
            --text-light: #475569;
            --border: #e2e8f0;
            --radius: 12px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }
        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding-top: var(--header-h);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent-hover);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--primary);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            gap: 20px;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .my-logo i {
            color: var(--accent);
            font-size: 1.8rem;
        }
        .my-logo:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .my-logo span {
            color: var(--accent);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-menu a {
            color: #e2e8f0;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .nav-menu a:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--accent);
            text-decoration: none;
        }
        .nav-menu a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .breadcrumb-wrap {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-light);
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb li+li::before {
            content: '\f105';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: #94a3b8;
            font-size: 0.75rem;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }
        .main-content {
            flex: 1;
            padding: 40px 0 60px;
        }
        .article-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 36px;
            margin-bottom: 40px;
        }
        .article-card h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .article-card h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .meta-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 30px;
            align-items: center;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 28px;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .meta-bar i {
            margin-right: 6px;
            color: var(--accent);
        }
        .last-updated {
            font-weight: 600;
            color: var(--primary);
        }
        .article-card h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 44px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--accent);
            display: inline-block;
        }
        .article-card h2 i {
            color: var(--accent);
            margin-right: 8px;
        }
        .article-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary-light);
            margin-top: 32px;
            margin-bottom: 12px;
        }
        .article-card h3 i {
            color: var(--accent);
            margin-right: 8px;
            font-size: 1.1rem;
        }
        .article-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 24px;
            margin-bottom: 8px;
        }
        .article-card p {
            margin-bottom: 16px;
            color: var(--text);
            font-size: 1rem;
            line-height: 1.8;
        }
        .article-card p b,
        .article-card p strong {
            color: var(--primary);
            font-weight: 700;
        }
        .article-card ul,
        .article-card ol {
            margin: 12px 0 20px 24px;
            line-height: 1.8;
        }
        .article-card li {
            margin-bottom: 6px;
        }
        .article-card .feature-img {
            margin: 28px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .article-card .feature-img img {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
        }
        .article-card .feature-img figcaption {
            padding: 10px 16px;
            background: var(--bg);
            font-size: 0.85rem;
            color: var(--text-light);
            text-align: center;
        }
        .highlight-box {
            background: #fef9e7;
            border-left: 4px solid var(--accent);
            padding: 18px 22px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 20px 0;
        }
        .highlight-box p {
            margin-bottom: 0;
        }
        .search-section {
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius);
            padding: 32px 28px;
            margin: 40px 0 24px;
        }
        .search-section h3 {
            color: #fff !important;
            margin-top: 0 !important;
            border-bottom: none !important;
            font-size: 1.4rem;
        }
        .search-section h3 i {
            color: var(--accent);
        }
        .search-form {
            display: flex;
            gap: 12px;
            margin-top: 16px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            background: #fff;
            color: var(--text);
            outline: none;
        }
        .search-form input:focus {
            box-shadow: 0 0 0 3px var(--accent);
        }
        .search-form button {
            padding: 14px 28px;
            background: var(--accent);
            color: var(--primary);
            border: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: var(--accent-hover);
            transform: scale(1.02);
        }
        .search-form button i {
            font-size: 1.1rem;
        }
        .rating-section {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 24px 28px;
            margin: 28px 0;
            border: 1px solid var(--border);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            flex-direction: row-reverse;
            justify-content: flex-end;
            font-size: 2rem;
            margin: 12px 0 16px;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            cursor: pointer;
            color: #cbd5e1;
            transition: color 0.2s;
        }
        .rating-stars label:hover,
        .rating-stars label:hover~label,
        .rating-stars input:checked~label {
            color: var(--accent);
        }
        .rating-form button {
            padding: 10px 24px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .rating-form button:hover {
            background: var(--primary-light);
        }
        .comments-section {
            margin: 32px 0 20px;
            padding-top: 20px;
            border-top: 2px solid var(--border);
        }
        .comments-section h3 {
            margin-top: 0 !important;
        }
        .comment-form textarea {
            width: 100%;
            min-height: 120px;
            padding: 14px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 1rem;
            font-family: var(--font);
            resize: vertical;
            transition: border 0.2s;
        }
        .comment-form textarea:focus {
            border-color: var(--accent);
            outline: none;
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
        }
        .comment-form .form-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin: 12px 0;
        }
        .comment-form .form-row input {
            flex: 1;
            min-width: 180px;
            padding: 12px 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
        }
        .comment-form .form-row input:focus {
            border-color: var(--accent);
            outline: none;
        }
        .comment-form button {
            padding: 12px 28px;
            background: var(--accent);
            color: var(--primary);
            border: none;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 1rem;
        }
        .comment-form button:hover {
            background: var(--accent-hover);
        }
        .comment-form button i {
            margin-right: 6px;
        }
        .site-footer {
            background: var(--primary);
            color: #e2e8f0;
            padding: 40px 0 24px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
        }
        .footer-inner h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-inner h4 i {
            color: var(--accent);
        }
        .footer-inner p,
        .footer-inner a {
            color: #cbd5e1;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .footer-inner a:hover {
            color: var(--accent);
        }
        .footer-inner ul {
            list-style: none;
            padding: 0;
        }
        .footer-inner ul li {
            margin-bottom: 6px;
        }
        .footer-inner ul li a {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-inner ul li a i {
            font-size: 0.7rem;
            color: var(--accent);
        }
        friend-link {
            display: block;
            margin-top: 12px;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 0;
            color: #e2e8f0;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 24px;
            margin-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.85rem;
            color: #94a3b8;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .copyright i {
            color: var(--accent);
        }
        @media (max-width: 992px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .article-card {
                padding: 28px 20px;
            }
            .article-card h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-h: 64px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--primary);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                box-shadow: 0 20px 30px rgba(0, 0, 0, 0.2);
                border-top: 1px solid rgba(255, 255, 255, 0.05);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 12px 14px;
                width: 100%;
                border-radius: 6px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .my-logo i {
                font-size: 1.4rem;
            }
            .article-card {
                padding: 20px 16px;
            }
            .article-card h1 {
                font-size: 1.6rem;
            }
            .article-card h2 {
                font-size: 1.4rem;
            }
            .article-card h3 {
                font-size: 1.15rem;
            }
            .meta-bar {
                flex-direction: column;
                gap: 6px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                min-width: 0;
            }
            .search-form button {
                justify-content: center;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .rating-stars {
                font-size: 1.6rem;
            }
            .comment-form .form-row {
                flex-direction: column;
            }
            .comment-form .form-row input {
                min-width: 0;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
        }
        @media (max-width: 480px) {
            .article-card h1 {
                font-size: 1.35rem;
            }
            .article-card {
                padding: 16px 12px;
            }
            .container {
                padding: 0 12px;
            }
            .header-inner {
                padding: 0 12px;
            }
            .my-logo {
                font-size: 1.1rem;
            }
            .my-logo i {
                font-size: 1.2rem;
            }
            .search-section {
                padding: 20px 16px;
            }
            .rating-section {
                padding: 16px 16px;
            }
        }
        .skip-link {
            position: absolute;
            top: -100px;
            left: 20px;
            background: var(--accent);
            color: var(--primary);
            padding: 10px 20px;
            border-radius: 0 0 8px 8px;
            font-weight: 700;
            z-index: 9999;
            transition: top 0.3s;
        }
        .skip-link:focus {
            top: 0;
            text-decoration: none;
        }
        .anchor-offset {
            scroll-margin-top: calc(var(--header-h) + 20px);
        }