:root {
    --color-primary: #0B1C2E;
    --color-secondary: #5E6369;
    --color-accent: #9E3A38;
    --color-background: #F8F5F0;
    --color-white: #FFFFFF;
    --color-text: #2C2C2C;
    --color-text-light: #666666;
    --font-cn: 'Noto Serif SC', serif;
    --font-en: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-cn);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.6;
    overflow-x: hidden;
}

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

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(248, 245, 240, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(94, 99, 105, 0.1);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(248, 245, 240, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 20px;
}

.nav-brand {
    display: flex;
    align-items: baseline;
    gap: 10px;
    cursor: pointer;
}

.brand-primary {
    font-family: var(--font-en);
    font-size: 1.5rem;
    font-weight: 100;
    color: var(--color-primary);
    letter-spacing: 2px;
}

.brand-secondary {
    font-family: var(--font-cn);
    font-size: 1rem;
    color: var(--color-secondary);
    font-weight: 300;
}

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

.nav-link {
    text-decoration: none;
    color: var(--color-text);
    font-size: 0.95rem;
    font-weight: 400;
    position: relative;
    transition: var(--transition);
    letter-spacing: 0.5px;
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: var(--transition);
}

.nav-link.active::after,
.nav-link:hover::after {
    width: 100%;
}

.language-toggle {
    display: flex;
    gap: 5px;
    margin-left: 2rem;
}

.lang-btn {
    padding: 5px 12px;
    background: transparent;
    border: 1px solid var(--color-secondary);
    color: var(--color-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-en);
    border-radius: 2px;
}

.lang-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.lang-btn:hover:not(.active) {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 20px 80px;
    position: relative;
    background: linear-gradient(135deg, var(--color-background) 0%, rgba(248, 245, 240, 0.8) 100%);
}

.hero-content {
    text-align: center;
    z-index: 2;
    position: relative;
}

.hero-title {
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease-out;
}

.name-cn {
    display: block;
    font-size: 4rem;
    font-weight: 300;
    color: var(--color-primary);
    letter-spacing: 15px;
    margin-bottom: 0.5rem;
}

.name-en {
    display: none;
    font-family: var(--font-en);
    font-size: 1.2rem;
    font-weight: 100;
    color: var(--color-secondary);
    letter-spacing: 3px;
}

body[data-lang="en"] .name-cn {
    display: none;
}

body[data-lang="en"] .name-en {
    display: block;
    font-size: 3rem;
    color: var(--color-primary);
    letter-spacing: 8px;
    font-weight: 200;
}

.hero-subtitle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    color: var(--color-text-light);
    animation: fadeInUp 0.8s ease-out 0.2s both;
    flex-wrap: wrap;
}

.technique {
    font-family: var(--font-en);
    font-weight: 300;
    color: var(--color-accent);
    letter-spacing: 1px;
}

.divider {
    color: rgba(94, 99, 105, 0.3);
}

.hero-quote {
    font-family: var(--font-en);
    font-size: 1.2rem;
    font-weight: 100;
    font-style: italic;
    color: var(--color-secondary);
    margin-bottom: 3rem;
    letter-spacing: 1px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.btn {
    padding: 12px 35px;
    text-decoration: none;
    border-radius: 2px;
    font-size: 1rem;
    font-weight: 400;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    letter-spacing: 0.5px;
    display: inline-block;
}

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

.btn-primary:hover {
    background: #0A1520;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(11, 28, 46, 0.2);
}

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.hero-visual {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.floating-element {
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(158, 58, 56, 0.05) 0%, transparent 70%);
    animation: float 20s infinite ease-in-out;
    top: 20%;
    right: 10%;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--color-primary);
    margin-bottom: 3rem;
    text-align: center;
    letter-spacing: 3px;
}

.statement {
    padding: 100px 0;
    background: var(--color-white);
}

.statement-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 2;
    color: var(--color-text);
}

.statement-content p {
    margin-bottom: 2rem;
}

.statement-content .lead {
    font-size: 1.3rem;
    font-weight: 300;
    color: var(--color-primary);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.signature {
    margin-top: 4rem;
    text-align: right;
    font-style: italic;
}

.signature p {
    margin-bottom: 0.5rem;
    color: var(--color-secondary);
}

.signature .note {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.portfolio {
    padding: 100px 0;
    background: var(--color-background);
}

.work-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    background: transparent;
    border: 1px solid var(--color-secondary);
    color: var(--color-text);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
    border-radius: 2px;
    font-family: inherit;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.work-item {
    background: var(--color-white);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.work-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.work-image {
    height: 300px;
    overflow: hidden;
    position: relative;
}

.work-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.work-item:hover .work-image img {
    transform: scale(1.05);
}

.placeholder-art {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(11, 28, 46, 0.1) 0%, 
        rgba(158, 58, 56, 0.1) 50%, 
        rgba(94, 99, 105, 0.1) 100%);
    position: relative;
}

.placeholder-art::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    border: 1px solid rgba(11, 28, 46, 0.2);
    border-radius: 50%;
}

.work-info {
    padding: 1.5rem;
}

.work-info h3 {
    font-size: 1.3rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.work-medium {
    font-size: 0.9rem;
    color: var(--color-secondary);
    margin-bottom: 0.3rem;
}

.work-year {
    font-family: var(--font-en);
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.about {
    padding: 100px 0;
    background: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

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

.about-text.highlight {
    color: var(--color-accent);
    font-style: italic;
}

.artist-photo {
    width: 100%;
    height: 500px;
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.artist-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.teaching {
    padding: 100px 0;
    background: var(--color-background);
}

.teaching-intro {
    text-align: center;
    margin-bottom: 3rem;
}

.teaching-intro p {
    font-size: 1.2rem;
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.course-card {
    background: var(--color-white);
    padding: 2rem;
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
}

.course-card h3 {
    font-size: 1.4rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
    font-weight: 400;
}

.course-card p {
    color: var(--color-text);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.course-card ul {
    list-style: none;
    padding-left: 0;
}

.course-card li {
    padding: 0.5rem 0;
    color: var(--color-secondary);
    border-bottom: 1px solid rgba(94, 99, 105, 0.1);
    font-size: 0.95rem;
}

.course-card li:last-child {
    border-bottom: none;
}

.teaching-cta {
    text-align: center;
    padding: 3rem;
    background: var(--color-white);
}

.teaching-cta h3 {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.teaching-cta p {
    color: var(--color-secondary);
    margin-bottom: 2rem;
}

.contact {
    padding: 100px 0;
    background: var(--color-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 900px;
    margin: 0 auto;
}

.contact-item {
    margin-bottom: 2rem;
}

.contact-item h3 {
    font-size: 1.2rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    font-weight: 400;
}

.contact-item p {
    color: var(--color-text);
    line-height: 1.6;
}

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

.contact-form input,
.contact-form select,
.contact-form textarea {
    padding: 12px;
    border: 1px solid rgba(94, 99, 105, 0.2);
    background: var(--color-background);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-white);
}

.contact-form textarea {
    resize: vertical;
}

.footer {
    padding: 3rem 0;
    background: var(--color-primary);
    color: var(--color-white);
    text-align: center;
}

.footer-brand {
    margin-bottom: 1rem;
}

.footer-brand .brand-primary {
    color: var(--color-white);
    font-size: 1.3rem;
    margin-right: 10px;
}

.footer-brand .brand-secondary {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
}

.footer-quote {
    font-style: italic;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-copyright {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    font-family: var(--font-en);
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--color-background);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .language-toggle {
        margin-left: auto;
        margin-right: 1rem;
    }

    .nav-toggle {
        display: flex;
    }

    .name-cn {
        font-size: 2.5rem;
        letter-spacing: 8px;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

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

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

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