:root {
            --primary-gradient: linear-gradient(135deg, #6c5ce7, #a29bfe, #fd79a8);
            --deep-gradient: linear-gradient(135deg, #2d3436, #434a4e, #1e272e);
            --blue: #3b82f6;
            --purple: #8b5cf6;
            --pink: #ec4899;
            --green: #10b981;
            --orange: #f59e0b;
            --dark-bg: #1a1a2e;
            --dark-card: #16213e;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a5e;
            --text-light: #f5f5f7;
            --text-muted: #9ca3af;
            --card-bg: #ffffff;
            --border-color: #e8e8ef;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            background: #fafafa;
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* ========== 导航栏 ========== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            transition: var(--transition);
        }
        .navbar.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            background: rgba(255, 255, 255, 0.95);
        }
        .navbar-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            height: 64px;
        }
        .navbar-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            text-decoration: none;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            white-space: nowrap;
            position: relative;
            z-index: 1002;
        }
        .navbar-logo span {
            font-weight: 300;
            font-size: 0.85rem;
            letter-spacing: 2px;
            margin-left: 6px;
            color: var(--text-muted);
            -webkit-text-fill-color: var(--text-muted);
        }
        .nav-toggle {
            display: none;
            cursor: pointer;
            width: 40px;
            height: 40px;
            position: relative;
            z-index: 1002;
            border: none;
            background: transparent;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.05);
        }
        .nav-toggle-bar {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            margin: 4px auto;
            transition: var(--transition);
            transform-origin: center;
        }
        #nav-checkbox {
            display: none;
        }
        #nav-checkbox:checked~.nav-toggle .nav-toggle-bar:nth-child(1) {
            transform: translateY(6.5px) rotate(45deg);
        }
        #nav-checkbox:checked~.nav-toggle .nav-toggle-bar:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        #nav-checkbox:checked~.nav-toggle .nav-toggle-bar:nth-child(3) {
            transform: translateY(-6.5px) rotate(-45deg);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-menu a {
            text-decoration: none;
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            transition: var(--transition);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
        }
        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-gradient);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-menu a:hover {
            color: var(--text-primary);
        }
        .nav-menu a:hover::after {
            width: 100%;
        }

        /* ========== 底部 ========== */
        .footer {
            background: var(--dark-bg);
            color: var(--text-muted);
            padding: 40px 24px 24px;
            margin-top: 60px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            text-align: center;
        }
        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .footer-links {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--text-light);
        }
        .footer-copy {
            font-size: 0.78rem;
            letter-spacing: 1px;
            opacity: 0.6;
        }
        .footer-copy a {
            color: inherit;
            text-decoration: none;
        }
        .footer-copy a:hover {
            text-decoration: underline;
        }

        /* ========== 主容器 ========== */
        .main {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 88px 24px 0;
        }

        /* ========== 404 区域 ========== */
        .error-section {
            text-align: center;
            padding: 60px 20px 40px;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            margin-bottom: 48px;
            position: relative;
            overflow: hidden;
        }
        .error-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.15), transparent 70%);
            pointer-events: none;
        }
        .error-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(253, 121, 168, 0.12), transparent 70%);
            pointer-events: none;
        }
        .error-code {
            font-size: 6rem;
            font-weight: 900;
            line-height: 1;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 4px;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .error-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .error-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            max-width: 480px;
            margin: 0 auto 28px;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }
        .back-home-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary-gradient);
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            text-decoration: none;
            border-radius: 50px;
            transition: var(--transition);
            box-shadow: 0 8px 20px rgba(108, 92, 231, 0.3);
            position: relative;
            z-index: 1;
            border: none;
            cursor: pointer;
        }
        .back-home-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(108, 92, 231, 0.4);
            filter: brightness(1.05);
        }

        /* ========== 最新文章区域 ========== */
        .latest-section {
            margin-bottom: 40px;
        }
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .section-title {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            position: relative;
            padding-left: 16px;
            line-height: 1.3;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 28px;
            border-radius: 4px;
            background: var(--primary-gradient);
        }
        .section-subtitle {
            font-size: 0.82rem;
            color: var(--text-muted);
            letter-spacing: 1.5px;
            text-transform: uppercase;
            font-weight: 500;
        }

        .post-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .post-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 20px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .post-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(108, 92, 231, 0.25);
        }
        .post-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
            word-break: break-word;
            overflow-wrap: break-word;
            white-space: normal;
            line-height: 1.4;
            transition: color var(--transition);
        }
        .post-card-title:hover {
            color: #6c5ce7;
        }
        .post-card-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            word-break: break-word;
            overflow-wrap: break-word;
            white-space: normal;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: auto;
        }
        .post-card-meta .publish-time {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .post-card-meta .publish-time::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #a29bfe;
        }

        /* ========== 响应式设计 ========== */
        @media (max-width: 992px) {
            .post-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            .navbar-inner {
                padding: 0 16px;
                height: 56px;
            }
            .navbar-logo {
                font-size: 1.3rem;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: #ffffff;
                flex-direction: column;
                justify-content: flex-start;
                align-items: flex-start;
                padding: 80px 28px 40px;
                gap: 20px;
                box-shadow: -8px 0 40px rgba(0, 0, 0, 0.12);
                transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                z-index: 1001;
                border-radius: 0 0 0 24px;
            }
            .nav-menu a {
                font-size: 1.05rem;
                font-weight: 600;
                color: var(--text-primary);
            }
            #nav-checkbox:checked~.nav-menu {
                right: 0;
            }
            .main {
                padding: 72px 12px 0;
            }
            .error-section {
                padding: 40px 16px 32px;
                margin-bottom: 32px;
            }
            .error-code {
                font-size: 4rem;
            }
            .error-title {
                font-size: 1.2rem;
            }
            .back-home-btn {
                padding: 10px 24px;
                font-size: 0.85rem;
            }
            .section-title {
                font-size: 1.3rem;
                padding-left: 12px;
            }
            .post-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .post-card {
                padding: 16px;
            }
            .post-card-title {
                font-size: 1rem;
            }
            .footer {
                padding: 28px 16px 16px;
                margin-top: 40px;
            }
            .footer-links {
                gap: 14px;
            }
        }

        @media (max-width: 480px) {
            .error-code {
                font-size: 3.5rem;
            }
            .section-title {
                font-size: 1.15rem;
            }
            .post-card-desc {
                -webkit-line-clamp: 4;
            }
        }