*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --secondary: #1d3557;
            --accent: #f4a261;
            --accent-light: #fdf0d5;
            --bg: #f9f9f9;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #555;
            --border: #ddd;
            --radius: 12px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            --max-width: 1200px;
            --header-height: 70px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding-top: var(--header-height);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s, border-color 0.2s;
        }
        a:hover,
        a:focus-visible {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: var(--secondary);
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            font-weight: 700;
            letter-spacing: -0.01em;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4em;
            color: var(--primary);
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 0.25em;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text);
        }
        p {
            margin-bottom: 1.2em;
        }
        ul,
        ol {
            margin: 0.8em 0 1.2em 2em;
        }
        li {
            margin-bottom: 0.4em;
        }
        blockquote {
            border-left: 5px solid var(--accent);
            background: var(--accent-light);
            padding: 1em 1.5em;
            margin: 1.5em 0;
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
            color: var(--text-light);
        }
        hr {
            border: none;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), var(--primary), var(--accent));
            margin: 2.5em 0;
            opacity: 0.3;
        }
        .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: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            height: var(--header-height);
            transition: box-shadow 0.3s;
        }
        .site-header:hover {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.10);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .my-logo i {
            font-size: 1.8rem;
            color: var(--accent);
        }
        .my-logo span {
            color: var(--secondary);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 16px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.92rem;
            color: var(--text);
            transition: background 0.25s, color 0.25s;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background: var(--primary);
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(0, 0, 0, 0.05);
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: var(--secondary);
            border-radius: 4px;
            transition: transform 0.3s, opacity 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            padding: 16px 0 8px;
            font-size: 0.88rem;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--text-light);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span.sep {
            color: #bbb;
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }
        .article-hero {
            padding: 30px 0 20px;
        }
        .article-hero h1 {
            font-size: 2.6rem;
            margin-bottom: 0.3em;
        }
        .article-hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            margin-bottom: 1.2em;
        }
        .article-hero .meta i {
            margin-right: 6px;
            color: var(--accent);
        }
        .last-updated {
            font-weight: 600;
            color: var(--secondary);
        }
        .content-area {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 40px 36px;
            box-shadow: var(--shadow);
            margin: 20px 0 40px;
        }
        .content-area img.featured {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
            border-radius: var(--radius);
            margin: 1.8em 0 2.2em;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.10);
        }
        .search-box {
            background: var(--accent-light);
            padding: 24px 28px;
            border-radius: var(--radius);
            margin: 2em 0;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .search-box label {
            font-weight: 600;
            font-size: 1.05rem;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--secondary);
        }
        .search-box input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s, box-shadow 0.3s;
            background: #fff;
        }
        .search-box input[type="text"]:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.15);
        }
        .search-box button {
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-box button:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }
        .search-box button:active {
            transform: scale(0.97);
        }
        .interaction-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin: 2.8em 0 1.2em;
        }
        .comment-box,
        .rating-box {
            background: var(--bg);
            padding: 24px 28px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .comment-box h3,
        .rating-box h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .comment-box textarea {
            width: 100%;
            padding: 14px 16px;
            border: 2px solid var(--border);
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: var(--font);
            resize: vertical;
            min-height: 100px;
            transition: border-color 0.3s;
            outline: none;
        }
        .comment-box textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.10);
        }
        .comment-box input[type="text"] {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: 10px;
            font-size: 0.95rem;
            margin-top: 10px;
            outline: none;
            transition: border-color 0.3s;
        }
        .comment-box input[type="text"]:focus {
            border-color: var(--primary);
        }
        .comment-box button,
        .rating-box button {
            margin-top: 14px;
            padding: 12px 30px;
            background: var(--secondary);
            color: #fff;
            border: none;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .comment-box button:hover,
        .rating-box button:hover {
            background: #112233;
            transform: translateY(-1px);
        }
        .rating-box .stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            margin: 10px 0 6px;
            cursor: pointer;
        }
        .rating-box .stars i {
            color: #ccc;
            transition: color 0.2s, transform 0.15s;
        }
        .rating-box .stars i.active,
        .rating-box .stars i:hover {
            color: #f4a261;
        }
        .rating-box .stars i:hover {
            transform: scale(1.2);
        }
        .rating-box .selected-rating {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-left: 6px;
        }
        .content-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8em 0;
            font-size: 0.95rem;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }
        .content-table thead {
            background: var(--secondary);
            color: #fff;
        }
        .content-table th,
        .content-table td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }
        .content-table tbody tr:hover {
            background: rgba(244, 162, 97, 0.08);
        }
        .content-table tbody tr:nth-child(even) {
            background: rgba(0, 0, 0, 0.02);
        }
        .link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 12px;
            margin: 1.8em 0;
            padding: 0;
            list-style: none;
        }
        .link-grid li a {
            display: block;
            padding: 10px 16px;
            background: var(--bg);
            border-radius: 8px;
            border: 1px solid var(--border);
            font-weight: 500;
            transition: background 0.2s, border-color 0.2s, transform 0.15s;
        }
        .link-grid li a:hover {
            background: var(--accent-light);
            border-color: var(--accent);
            transform: translateY(-2px);
            text-decoration: none;
        }
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.85);
            padding: 40px 0 30px;
            margin-top: 50px;
        }
        .site-footer a {
            color: var(--accent);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-grid h4 {
            color: #fff;
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 8px;
            display: inline-block;
        }
        .footer-grid p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-grid ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-grid ul li {
            margin-bottom: 8px;
        }
        .footer-grid ul li a {
            font-size: 0.92rem;
        }
        friend-link {
            display: block;
            padding: 16px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            margin-top: 16px;
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.7);
        }
        friend-link a {
            margin: 0 6px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .copyright strong {
            color: rgba(255, 255, 255, 0.8);
        }
        @media (max-width: 900px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(8px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.10);
                border-radius: 0 0 var(--radius) var(--radius);
                display: none;
                max-height: 70vh;
                overflow-y: auto;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 20px;
                width: 100%;
                border-radius: 8px;
            }
            .interaction-section {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .content-area {
                padding: 24px 18px;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .search-box {
                flex-direction: column;
                align-items: stretch;
            }
            .search-box input[type="text"] {
                min-width: auto;
            }
        }
        @media (max-width: 480px) {
            .article-hero h1 {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo i {
                font-size: 1.4rem;
            }
            .content-area {
                padding: 16px 14px;
            }
            .breadcrumb {
                font-size: 0.78rem;
                gap: 4px;
            }
            .rating-box .stars {
                font-size: 1.5rem;
            }
        }
        .text-accent {
            color: var(--primary);
        }
        .text-muted {
            color: var(--text-light);
        }
        .mt-1 {
            margin-top: 1em;
        }
        .mb-1 {
            margin-bottom: 1em;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        :target {
            scroll-margin-top: calc(var(--header-height) + 16px);
        }