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

:root {
    --black: #000000;
    --white: #ffffff;
    --gray-dark: #1a1a1a;
    --gray-medium: #666666;
    --gray-light: #f5f5f5;
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 
                 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--black);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--black);
    letter-spacing: 2px;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--black);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--black);
    transition: var(--transition);
}

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

.burger {
    display: none;
    cursor: pointer;
}

.burger div {
    width: 25px;
    height: 2px;
    background: var(--black);
    margin: 5px;
    transition: var(--transition);
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    padding-top: 80px;
}

.hero-content {
    text-align: center;
    animation: fadeInUp 1s ease;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.highlight {
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 8px;
    background: var(--black);
    opacity: 0.1;
    z-index: -1;
}

.hero p {
    font-size: 1.3rem;
    color: var(--gray-medium);
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    text-decoration: none;
    border-radius: 0;
    transition: var(--transition);
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid var(--black);
}

.btn-primary {
    background: var(--black);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--white);
    color: var(--black);
}

section {
    padding: 6rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--black);
}

.about {
    background: var(--gray-light);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--gray-medium);
    line-height: 1.8;
}

.skills {
    margin-top: 3rem;
}

.skills h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.skill-tag {
    padding: 0.6rem 1.2rem;
    background: var(--white);
    border: 1px solid var(--black);
    font-size: 0.9rem;
    transition: var(--transition);
}

.skill-tag:hover {
    background: var(--black);
    color: var(--white);
}

.works {
    background: var(--white);
}

.works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.work-card {
    background: var(--white);
    border: 1px solid #e0e0e0;
    transition: var(--transition);
    overflow: hidden;
}

.work-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.work-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background: var(--gray-light);
}

.placeholder-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-medium);
    font-size: 1rem;
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
}

.work-info {
    padding: 2rem;
}

.work-info h3 {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
}

.work-info p {
    color: var(--gray-medium);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.btn-link {
    color: var(--black);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.btn-link:hover {
    opacity: 0.6;
}

.contact {
    background: var(--black);
    color: var(--white);
}

.contact .section-title {
    color: var(--white);
}

.contact .section-title::after {
    background: var(--white);
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content > p {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.contact-item h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.contact-item p {
    opacity: 0.8;
}

.social-links {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.social-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.social-links a:hover {
    opacity: 1;
}

.footer {
    background: var(--gray-dark);
    color: var(--white);
    text-align: center;
    padding: 2rem 0;
}

.footer p {
    opacity: 0.7;
    font-size: 0.9rem;
}

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        right: -100%;
        top: 80px;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        align-items: center;
        width: 100%;
        padding-top: 3rem;
        transition: var(--transition);
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    }

    .nav-links.active {
        right: 0;
    }

    .burger {
        display: block;
    }

    .burger.active .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .burger.active .line2 {
        opacity: 0;
    }

    .burger.active .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

    section {
        padding: 4rem 0;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }
}