.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 30%, var(--accent-light) 0%, transparent 50%),
                radial-gradient(circle at 70% 70%, rgba(42, 42, 42, 0.03) 0%, transparent 50%);
    animation: float 25s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(2%, 2%) rotate(1deg); }
    50% { transform: translate(0, 4%) rotate(0deg); }
    75% { transform: translate(-2%, 2%) rotate(-1deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 32px;
    max-width: 600px;
}

.hero-name {
    font-family: var(--font-serif);
    font-size: clamp(40px, 8vw, 56px);
    font-weight: 500;
    letter-spacing: 8px;
    margin-bottom: 20px;
    color: var(--text);
    opacity: 0;
    transform: translateY(40px);
    animation: slideUp 0.9s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.hero-title {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--text-muted);
    letter-spacing: 4px;
    margin-bottom: 28px;
    text-transform: uppercase;
    opacity: 0;
    transform: translateY(40px);
    animation: slideUp 0.9s cubic-bezier(0.4, 0, 0.2, 1) 0.15s forwards;
}

.hero-bio {
    font-family: var(--font-sans);
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 2;
    opacity: 0;
    transform: translateY(40px);
    animation: slideUp 0.9s cubic-bezier(0.4, 0, 0.2, 1) 0.3s forwards;
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.scroll-hint {
    position: absolute;
    bottom: 48px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    opacity: 0.5;
    animation: bounce 2.5s ease-in-out infinite;
}

.scroll-hint svg {
    width: 22px;
    height: 22px;
}

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

.quote-section {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: var(--bg-secondary);
}

.quote-box {
    text-align: center;
    padding: 56px 40px;
    max-width: 640px;
    position: relative;
}

.quote-box::before {
    content: '"';
    font-family: var(--font-serif);
    font-size: 120px;
    line-height: 1;
    position: absolute;
    top: 0;
    left: 0;
    color: var(--text);
    opacity: 0.08;
}

.quote-text {
    font-family: var(--font-serif);
    font-size: clamp(24px, 4vw, 32px);
    font-weight: 400;
    line-height: 2;
    color: var(--text);
    margin-bottom: 28px;
    letter-spacing: 1px;
}

.quote-author {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-muted);
    letter-spacing: 3px;
}

.main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 80px 24px 100px;
}

.section {
    margin-bottom: 80px;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

.section:last-child {
    margin-bottom: 0;
}

.section-header {
    margin-bottom: 36px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.section-title {
    font-family: var(--font-serif);
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    letter-spacing: 3px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.skill-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--glass-shadow);
    opacity: 0;
    transform: translateY(30px);
}

.section.visible .skill-card {
    opacity: 1;
    transform: translateY(0);
}

.section.visible .skill-card:nth-child(1) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.1s; }
.section.visible .skill-card:nth-child(2) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.2s; }
.section.visible .skill-card:nth-child(3) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.3s; }
.section.visible .skill-card:nth-child(4) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.4s; }
.section.visible .skill-card:nth-child(5) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.5s; }
.section.visible .skill-card:nth-child(6) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.6s; }
.section.visible .skill-card:nth-child(7) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.7s; }
.section.visible .skill-card:nth-child(8) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.8s; }
.section.visible .skill-card:nth-child(9) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.9s; }
.section.visible .skill-card:nth-child(10) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 1s; }

.skill-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border);
}

.skill-name {
    font-family: var(--font-serif);
    font-size: 17px;
    font-weight: 500;
    margin-bottom: 12px;
    color: var(--text);
    letter-spacing: 0.5px;
}

.skill-desc {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.9;
}

.timeline {
    position: relative;
    padding-left: 36px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 16px;
    bottom: 16px;
    width: 2px;
    background: var(--border);
    border-radius: 1px;
}

.timeline-item {
    position: relative;
    padding-bottom: 40px;
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.section.visible .timeline-item {
    opacity: 1;
    transform: translateX(0);
}

.section.visible .timeline-item:nth-child(1) { transition-delay: 0.1s; }
.section.visible .timeline-item:nth-child(2) { transition-delay: 0.2s; }
.section.visible .timeline-item:nth-child(3) { transition-delay: 0.3s; }
.section.visible .timeline-item:nth-child(4) { transition-delay: 0.4s; }
.section.visible .timeline-item:nth-child(5) { transition-delay: 0.5s; }
.section.visible .timeline-item:nth-child(6) { transition-delay: 0.6s; }
.section.visible .timeline-item:nth-child(7) { transition-delay: 0.7s; }
.section.visible .timeline-item:nth-child(8) { transition-delay: 0.8s; }
.section.visible .timeline-item:nth-child(9) { transition-delay: 0.9s; }
.section.visible .timeline-item:nth-child(10) { transition-delay: 1s; }
.section.visible .timeline-item:nth-child(11) { transition-delay: 1.1s; }
.section.visible .timeline-item:nth-child(12) { transition-delay: 1.2s; }

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

.timeline-dot {
    position: absolute;
    left: -36px;
    top: 10px;
    width: 18px;
    height: 18px;
    background: var(--bg);
    border: 2px solid var(--text);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--bg);
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-dot {
    background: var(--text);
    transform: scale(1.2);
}

.timeline-year {
    font-family: var(--font-sans);
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.timeline-title {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 10px;
    color: var(--text);
    letter-spacing: 0.5px;
}

.timeline-desc {
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.85;
}

.about-content {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 36px 40px;
    box-shadow: var(--glass-shadow);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.section.visible .about-content {
    opacity: 1;
    transform: translateY(0);
}

.about-content p {
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.visible .about-content p:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0.1s; }
.section.visible .about-content p:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 0.2s; }
.section.visible .about-content p:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 0.3s; }
.section.visible .about-content p:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 0.4s; }

.about-content p:last-child {
    margin-bottom: 0;
}

.contacts {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 22px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    box-shadow: var(--glass-shadow);
    opacity: 0;
    transform: translateY(30px);
}

.section.visible .contact-item {
    opacity: 1;
    transform: translateY(0);
}

.section.visible .contact-item:nth-child(1) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.1s; }
.section.visible .contact-item:nth-child(2) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.2s; }
.section.visible .contact-item:nth-child(3) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.3s; }
.section.visible .contact-item:nth-child(4) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.4s; }
.section.visible .contact-item:nth-child(5) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.5s; }
.section.visible .contact-item:nth-child(6) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.6s; }
.section.visible .contact-item:nth-child(7) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.7s; }
.section.visible .contact-item:nth-child(8) { transition: opacity 0.7s ease, transform 0.7s ease; transition-delay: 0.8s; }

.contact-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--text);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.contact-item:hover .contact-icon {
    transform: scale(1.05);
}

.contact-icon svg {
    width: 20px;
    height: 20px;
    color: var(--bg);
}

.contact-info {
    flex: 1;
    min-width: 0;
}

.contact-label {
    font-family: var(--font-sans);
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
    letter-spacing: 0.5px;
}

.contact-value {
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.contact-value a {
    color: var(--text);
}

.footer {
    padding: 56px 24px;
    background: var(--bg-secondary);
}

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

.footer-beian {
    margin-top: 16px;
    gap: 24px;
}

@media (max-width: 768px) {
    .main {
        padding: 60px 16px 80px;
    }

    .hero-name {
        font-size: 36px;
        letter-spacing: 5px;
    }

    .section {
        margin-bottom: 60px;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .skill-card {
        padding: 24px;
    }

    .timeline {
        padding-left: 28px;
    }

    .timeline::before {
        left: 6px;
    }

    .timeline-dot {
        left: -28px;
        width: 14px;
        height: 14px;
    }

    .about-content {
        padding: 28px 24px;
    }

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

    .contact-item {
        padding: 18px 20px;
    }

    .quote-box {
        padding: 40px 28px;
    }

    .quote-text {
        font-size: 22px;
    }

    .footer {
        padding: 40px 16px;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: 24px 20px;
    }

    .hero-name {
        font-size: 32px;
        letter-spacing: 4px;
    }

    .hero-title {
        font-size: 12px;
        letter-spacing: 3px;
    }

    .hero-bio {
        font-size: 15px;
    }

    .section-header {
        margin-bottom: 28px;
    }

    .section-title {
        font-size: 13px;
    }

    .skill-name {
        font-size: 16px;
    }

    .timeline-title {
        font-size: 17px;
    }

    .contact-icon {
        width: 44px;
        height: 44px;
    }

    .contact-icon svg {
        width: 18px;
        height: 18px;
    }
}

.skeleton-hero-name,
.skeleton-hero-title,
.skeleton-hero-bio {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
}

.skeleton-quote-text {
    min-height: 80px;
}

.skeleton-skill-card {
    opacity: 1 !important;
    transform: none !important;
}

.skeleton-timeline-item {
    opacity: 1 !important;
    transform: none !important;
    padding-bottom: 40px;
}

.skeleton-about-content {
    opacity: 1 !important;
    transform: none !important;
}

.skeleton-about-content .skeleton-text {
    margin-bottom: 16px;
}

.skeleton-about-content .skeleton-text:last-child {
    margin-bottom: 0;
}

.skeleton-contact-item {
    opacity: 1 !important;
    transform: none !important;
}

.skeleton-contact-icon {
    background: var(--text);
}