:root {
            --bg: #0a0a0f;
            --bg-secondary: #12121a;
            --bg-card: rgba(255,255,255,0.03);
            --text: #e8e8ec;
            --text-secondary: #8b8b9a;
            --accent: #6366f1;
            --accent-glow: rgba(99,102,241,0.3);
            --accent2: #ec4899;
            --accent3: #06b6d4;
            --border: rgba(255,255,255,0.08);
            --gradient: linear-gradient(135deg, #6366f1 0%, #ec4899 50%, #06b6d4 100%);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Noto Sans SC', 'Space Grotesk', sans-serif;
            background: var(--bg);
            color: var(--text);
            overflow-x: hidden;
            line-height: 1.7;
        }

        /* 自定义滚动条 */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--accent);
            border-radius: 3px;
        }

        /* 导航 */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            padding: 1.2rem 4%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--border);
            transition: all 0.4s ease;
        }

        /* 磨砂玻璃背景放到 ::before 伪元素上：backdrop-filter 会让 nav 成为
           position:fixed 后代的包含块，导致移动端 .nav-links 全屏抽屉被限制
           在 nav 自身高度内，5 个导航项无法显示/点击。移到伪元素后 nav 不再
           产生包含块，fixed 抽屉按视口定位，磨砂效果保持不变。 */
        nav::before {
            content: '';
            position: absolute;
            inset: 0;
            z-index: -1;
            background: rgba(10,10,15,0.7);
            -webkit-backdrop-filter: blur(20px);
            backdrop-filter: blur(20px);
            transition: background 0.4s ease;
        }

        nav.scrolled {
            padding: 0.8rem 4%;
        }

        nav.scrolled::before {
            background: rgba(10,10,15,0.95);
        }

        .logo {
            font-family: 'Space Grotesk', sans-serif;
            font-size: 1.5rem;
            font-weight: 700;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -1px;
        }

        .nav-links {
            display: flex;
            gap: 2.5rem;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: color 0.3s;
            position: relative;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gradient);
            transition: width 0.3s;
        }

        .nav-links a:hover {
            color: var(--text);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            padding: 0 4%;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .hero-bg canvas {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 900px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1.2rem;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 100px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            animation: fadeInUp 0.8s ease;
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            background: #22c55e;
            border-radius: 50%;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        .hero h1 {
            font-family: 'Space Grotesk', sans-serif;
            font-size: clamp(2.5rem, 6vw, 5rem);
            font-weight: 700;
            line-height: 1.1;
            margin-bottom: 1.5rem;
            letter-spacing: -2px;
        }

        .hero h1 .gradient-text {
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero h1 .cursor {
            display: inline-block;
            color: var(--accent);
            animation: blink 1s step-end infinite;
        }

        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0; }
        }

        .hero-subtitle {
            font-size: clamp(1rem, 2vw, 1.3rem);
            color: var(--text-secondary);
            margin-bottom: 3rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-cta {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            padding: 1rem 2.5rem;
            border-radius: 100px;
            font-size: 0.95rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
            font-family: inherit;
        }

        .btn-primary {
            background: var(--gradient);
            color: white;
            box-shadow: 0 10px 40px var(--accent-glow);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 50px var(--accent-glow);
        }

        .btn-secondary {
            background: transparent;
            color: var(--text);
            border: 1px solid var(--border);
        }

        .btn-secondary:hover {
            background: var(--bg-card);
            border-color: var(--accent);
        }

        .scroll-indicator {
            position: absolute;
            bottom: 2rem;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.5rem;
            color: var(--text-secondary);
            font-size: 0.75rem;
            animation: bounce 2s infinite;
        }

        .scroll-indicator svg {
            width: 24px;
            height: 24px;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
            40% { transform: translateX(-50%) translateY(-10px); }
            60% { transform: translateX(-50%) translateY(-5px); }
        }

        /* Section通用 */
        section {
            padding: 6rem 4%;
            position: relative;
        }

        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-label {
            display: inline-block;
            padding: 0.3rem 1rem;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 100px;
            font-size: 0.8rem;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .section-title {
            font-family: 'Space Grotesk', sans-serif;
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 700;
            margin-bottom: 1rem;
            letter-spacing: -1px;
        }

        .section-desc {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.05rem;
        }

        /* About Section */
        .about {
            background: var(--bg-secondary);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            max-width: 1200px;
            margin: 0 auto;
            align-items: center;
        }

        .about-image {
            position: relative;
        }

        .about-stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
            margin-top: 0;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 1.5rem;
            text-align: center;
            transition: all 0.3s;
        }

        .stat-card:hover {
            border-color: var(--accent);
            transform: translateY(-4px);
        }

        .stat-number {
            font-family: 'Space Grotesk', sans-serif;
            font-size: 2rem;
            font-weight: 700;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 0.3rem;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            font-weight: 700;
        }

        .about-text p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
            font-size: 1.05rem;
        }

        /* Skills Section */
        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        .skill-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 2rem;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .skill-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--gradient);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .skill-card:hover::before {
            transform: scaleX(1);
        }

        .skill-card:hover {
            border-color: rgba(99,102,241,0.3);
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }

        .skill-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1.2rem;
            background: rgba(99,102,241,0.1);
            border: 1px solid rgba(99,102,241,0.2);
        }

        .skill-card h3 {
            font-size: 1.2rem;
            margin-bottom: 0.8rem;
            font-weight: 600;
        }

        .skill-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 1.2rem;
        }

        .skill-bar {
            height: 6px;
            background: rgba(255,255,255,0.05);
            border-radius: 3px;
            overflow: hidden;
        }

        .skill-progress {
            height: 100%;
            background: var(--gradient);
            border-radius: 3px;
            width: 0;
            transition: width 1.5s ease;
        }

        .skill-percent {
            display: flex;
            justify-content: space-between;
            margin-top: 0.5rem;
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        /* Projects Section */
        .projects {
            background: var(--bg-secondary);
        }

        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        .project-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 24px;
            overflow: hidden;
            transition: all 0.4s ease;
            position: relative;
        }

        .project-card:hover {
            transform: translateY(-8px);
            border-color: rgba(99,102,241,0.3);
            box-shadow: 0 25px 50px rgba(0,0,0,0.4);
        }

        .project-image {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
        }

        .project-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .project-card:hover .project-image img {
            transform: scale(1.1);
        }

        .project-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10,10,15,0.9) 0%, transparent 60%);
            display: flex;
            align-items: flex-end;
            padding: 1.5rem;
            opacity: 0;
            transition: opacity 0.3s;
        }

        .project-card:hover .project-overlay {
            opacity: 1;
        }

        .project-tags {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .project-tag {
            padding: 0.3rem 0.8rem;
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(10px);
            border-radius: 100px;
            font-size: 0.75rem;
            color: var(--text);
            border: 1px solid rgba(255,255,255,0.1);
        }

        .project-content {
            padding: 1.8rem;
        }

        .project-content h3 {
            font-size: 1.3rem;
            margin-bottom: 0.6rem;
            font-weight: 600;
        }

        .project-content p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 1.2rem;
        }

        .project-links {
            display: flex;
            gap: 1rem;
        }

        .project-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.85rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.3rem;
            transition: color 0.3s;
        }

        .project-links a:hover {
            color: var(--accent);
        }

        /* Experience Timeline */
        .timeline {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--accent), var(--accent2), var(--accent3));
        }

        .timeline-item {
            position: relative;
            padding-left: 60px;
            padding-bottom: 3rem;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: 11px;
            top: 5px;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--bg);
            border: 3px solid var(--accent);
            box-shadow: 0 0 20px var(--accent-glow);
        }

        .timeline-content {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 1.8rem;
            transition: all 0.3s;
        }

        .timeline-content:hover {
            border-color: rgba(99,102,241,0.3);
            transform: translateX(5px);
        }

        .timeline-date {
            font-size: 0.8rem;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .timeline-content h3 {
            font-size: 1.2rem;
            margin-bottom: 0.3rem;
        }

        .timeline-content .company {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 0.8rem;
        }

        .timeline-content p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* Contact Section */
        .contact {
            background: var(--bg-secondary);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            max-width: 1100px;
            margin: 0 auto;
            align-items: start;
        }

        .contact-info h3 {
            font-size: 1.8rem;
            margin-bottom: 1rem;
        }

        .contact-info p {
            color: var(--text-secondary);
            margin-bottom: 2rem;
        }

        .contact-links {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .contact-link {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem 1.5rem;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 14px;
            text-decoration: none;
            color: var(--text);
            transition: all 0.3s;
        }

        .contact-link:hover {
            border-color: var(--accent);
            transform: translateX(5px);
        }

        .contact-link-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(99,102,241,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }

        .contact-form {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 2.5rem;
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            font-weight: 500;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 1rem 1.2rem;
            background: rgba(255,255,255,0.03);
            border: 1px solid var(--border);
            border-radius: 12px;
            color: var(--text);
            font-family: inherit;
            font-size: 0.95rem;
            transition: all 0.3s;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 20px rgba(99,102,241,0.1);
        }

        .form-group textarea {
            min-height: 140px;
            resize: vertical;
        }

        /* Footer */
        footer {
            padding: 3rem 4%;
            text-align: center;
            border-top: 1px solid var(--border);
        }

        footer p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        footer .heart {
            color: var(--accent2);
            display: inline-block;
            animation: heartbeat 1.5s ease infinite;
        }

        @keyframes heartbeat {
            0%, 100% { transform: scale(1); }
            14% { transform: scale(1.3); }
            28% { transform: scale(1); }
            42% { transform: scale(1.3); }
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-on-scroll {
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.8s ease;
        }

        .animate-on-scroll.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 900px) {
            .about-grid,
            .contact-grid {
                grid-template-columns: 1fr;
            }

           /* 导航折叠：默认隐藏，.open 时下拉为导航面板 */
            .nav-links {
                /* 参考首页 VitePress VPNavScreen：全屏覆盖式抽屉 */
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                width: 100%;
                z-index: 999;
                flex-direction: column;
                gap: 0.3rem;
                padding: 5rem 4% 2rem;
                background: rgba(10, 10, 15, 0.98);
                -webkit-backdrop-filter: blur(20px);
                backdrop-filter: blur(20px);
                overflow-y: auto;
                /* 默认收起 */
                opacity: 0;
                pointer-events: none;
                transform: translateY(-12px);
                visibility: hidden;
                transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
            }

            /* 展开状态：全屏面板淡入下移到位 */
            .nav-links.open {
                opacity: 1;
                pointer-events: auto;
                transform: translateY(0);
                visibility: visible;
            }

            .nav-links li {
                width: 100%;
            }

            .nav-links a {
                display: block;
                padding: 0.95rem 0.5rem;
                font-size: 1.05rem;
                font-weight: 500;
                border-bottom: 1px solid var(--border);
                border-radius: 8px;
                transition: background-color 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
            }

            .nav-links li:last-child a {
                border-bottom: none;
            }

            /* 取消桌面端下划线动效，移动端整行点击 + 品牌色高亮 */
            .nav-links a::after {
                display: none;
            }

            .nav-links a:hover,
            .nav-links a:active {
                background: rgba(99, 102, 241, 0.14);
                color: var(--text);
                padding-left: 1rem;
            }

            /* 汉堡按钮：保证触控尺寸与层级，始终在抽屉之上可点 */
            .mobile-menu-btn {
                display: flex;
                align-items: center;
                justify-content: center;
                width: 44px;
                height: 44px;
                font-size: 1.4rem;
                line-height: 1;
                z-index: 1001;
            }

            /* 打开时锁住页面滚动 */
            body.nav-open {
                overflow: hidden;
            }

            .hero-cta {
                flex-direction: column;
                align-items: center;
            }

            .btn {
                width: 100%;
                max-width: 280px;
            }

            .projects-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 浮动粒子背景 */
        .particles {
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 0;
            opacity: 0.3;
        }