:root {
            --primary-color: #3498db;
            --secondary-color: #2c3e50;
            --accent-color: #e74c3c;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
            --gradient: linear-gradient(135deg, var(--primary-color), var(--accent-color));
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            }
        html {
            scroll-behavior: smooth;
        }
        body {
            line-height: 1.6;
            color: #333;
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        .container {
            width: 85%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* 导航栏 */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            z-index: 1000;
            transition: all 0.3s ease;
        }
        nav.scrolled {
            padding: 10px 0;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 8px;
            font-size: 1.5rem;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 30px;
            position: relative;
        }
        .nav-links a {
            text-decoration: none;
            color: var(--dark-color);
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--gradient);
            transition: width 0.3s ease;
            border-radius: 3px;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a:hover {
            color: var(--primary-color);
        }
        /* 各部分通用样式 */
        section {
            padding: 100px 0;
            position: relative;
        }
        .section-title {
            text-align: center;
            margin-bottom: 60px;
            position: relative;
        }
        .section-title h2 {
            font-size: 2.8rem;
            color: var(--secondary-color);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 5px;
            background: var(--gradient);
            border-radius: 5px;
        }
        /* 英雄区域 */
        .hero {
            height: 100vh;
            display: flex;
            align-items: center;
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://lsqkk.github.io/image/bg.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.4);
            z-index: 0;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }
        .hero-content h1 {
            font-size: 4rem;
            margin-bottom: 20px;
            animation: fadeInUp 1s ease;
            font-weight: 800;
            letter-spacing: 1px;
        }
        .hero-content p {
            font-size: 1.8rem;
            margin-bottom: 30px;
            animation: fadeInUp 1s ease 0.2s;
            animation-fill-mode: both;
            font-weight: 300;
        }
        .btn {
            display: inline-block;
            padding: 15px 40px;
            background: var(--gradient);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
            animation: fadeInUp 1s ease 0.4s;
            animation-fill-mode: both;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
            position: relative;
            overflow: hidden;
            z-index: 1;
        }
        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 0%;
            height: 100%;
            background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
            transition: all 0.5s ease;
            z-index: -1;
        }
        .btn:hover::before {
            width: 100%;
        }
        .btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 25px rgba(0, 0, 0, 0.3);
        }
        /* 关于我 */
        .about-content {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 15px 50px rgba(0, 0, 0, 0.1);
            padding: 40px;
        }
        .about-text {
            flex: 1;
            min-width: 300px;
            padding-right: 40px;
        }
        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--secondary-color);
            display: flex;
            align-items: center;
        }
        .about-text h3 i {
            margin-right: 10px;
            color: var(--primary-color);
        }
        .highlight {
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            font-weight: 700;
        }
        .about-image {
            flex: 1;
            min-width: 300px;
            text-align: center;
            position: relative;
        }
        .profile-img {
            width: 350px;
            height: 350px;
            border-radius: 50%;
            object-fit: cover;
            border: 5px solid white;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
            transition: all 0.5s ease;
        }
        .profile-img:hover {
            transform: scale(1.03);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        }
        /* 能力与成就部分 */
        .skills-achievements {
            background-color: var(--light-color);
            position: relative;
        }
        .skills-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .skill-card {
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            border-top: 5px solid var(--primary-color);
        }
        .skill-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 0;
            background: var(--gradient);
            opacity: 0.05;
            transition: all 0.5s ease;
            z-index: 0;
        }
        .skill-card:hover::before {
            height: 100%;
        }
        .skill-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
        }
        .skill-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        .skill-card h3 {
            margin-bottom: 15px;
            color: var(--secondary-color);
            position: relative;
            z-index: 1;
        }
        .skill-card p {
            position: relative;
            z-index: 1;
        }
        .achievement-showcase {
            margin-top: 80px;
        }
        .achievement-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .achievement-item {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }
        .achievement-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
        }
        .achievement-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .achievement-item:hover .achievement-img {
            transform: scale(1.05);
        }
        .achievement-content {
            padding: 20px;
        }
        .achievement-content h3 {
            margin-bottom: 10px;
            color: var(--secondary-color);
            display: flex;
            align-items: center;
        }
        .achievement-content h3 i {
            margin-right: 10px;
            color: var(--primary-color);
        }
        /* 作品集 */
        .portfolio {
            position: relative;
        }
        .portfolio-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .portfolio-item {
            position: relative;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            height: 300px;
            transition: all 0.3s ease;
        }
        .portfolio-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }
        .portfolio-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .portfolio-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(transparent, rgba(52, 152, 219, 0.9));
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            align-items: flex-start;
            padding: 25px;
            color: white;
            opacity: 0;
            transition: opacity 0.5s ease;
        }
        .portfolio-item:hover .portfolio-overlay {
            opacity: 1;
        }
        .portfolio-item:hover .portfolio-img {
            transform: scale(1.1);
        }
        .portfolio-overlay h3 {
            margin-bottom: 10px;
            font-size: 1.5rem;
            transform: translateY(20px);
            transition: transform 0.5s ease;
        }
        .portfolio-overlay p {
            transform: translateY(20px);
            transition: transform 0.5s ease 0.1s;
        }
        .portfolio-item:hover .portfolio-overlay h3,
        .portfolio-item:hover .portfolio-overlay p {
            transform: translateY(0);
        }
        /* 结尾部分 */
        .conclusion {
            text-align: center;
            padding: 100px 0;
            background: linear-gradient(135deg, rgba(52, 152, 219, 0.05), rgba(231, 76, 60, 0.05));
            position: relative;
        }
        .conclusion-content {
            max-width: 800px;
            margin: 0 auto;
        }
        .conclusion h2 {
            font-size: 2.5rem;
            margin-bottom: 30px;
            color: var(--secondary-color);
        }
        .quote {
            font-size: 1.8rem;
            font-style: italic;
            margin: 40px 0;
            padding: 30px;
            border-radius: 15px;
            background: white;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            position: relative;
        }
        .quote::before,
        .quote::after {
            content: '"';
            font-size: 4rem;
            color: var(--primary-color);
            opacity: 0.2;
            position: absolute;
        }
        .quote::before {
            top: 10px;
            left: 20px;
        }
        .quote::after {
            bottom: -20px;
            right: 20px;
        }
        .aspiration {
            font-size: 1.2rem;
            line-height: 1.8;
            margin-bottom: 40px;
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        }
        /* 页脚 */
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 40px 0;
            text-align: center;
        }
        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 20px;
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .copyright {
            margin-top: 20px;
            opacity: 0.8;
        }
        /* 动画 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        @keyframes float {
            0% {
                transform: translateY(0px);
            }
            50% {
                transform: translateY(-10px);
            }
            100% {
                transform: translateY(0px);
            }
        }
        .floating {
            animation: float 5s ease-in-out infinite;
        }
        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero-content h1 {
                font-size: 3rem;
            }
            .hero-content p {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 768px) {
            .nav-container {
                flex-direction: column;
            }
            .nav-links {
                margin-top: 20px;
                flex-wrap: wrap;
                justify-content: center;
            }
            .nav-links li {
                margin: 10px 15px;
            }
            .hero-content h1 {
                font-size: 2.5rem;
            }
            .hero-content p {
                font-size: 1.2rem;
            }
            .about-content {
                flex-direction: column;
                padding: 25px;
            }
            .about-text {
                padding-right: 0;
                margin-bottom: 30px;
            }
            .section-title h2 {
                font-size: 2.2rem;
            }
            .quote {
                font-size: 1.4rem;
                padding: 20px;
            }
        }