*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root { --bg: #ffffff; --text: #1d1d1f; --text-secondary: #6e6e73; --text-tertiary: #86868b; --accent: #1d1d1f; --border: rgba(0,0,0,0.08); --border-light: rgba(0,0,0,0.04); --radius: 18px; --radius-lg: 24px; --font-primary: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif; --max-width: 980px; --nav-height: 56px; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-primary); background: var(--bg); color: var(--text); line-height: 1.5; font-weight: 400; letter-spacing: -0.01em; padding-top: var(--nav-height); }
::selection { background: rgba(0,0,0,0.08); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* Navigation */
.nav { position: fixed; top: 0; left: 0; width: 100%; height: var(--nav-height); background: rgba(255,255,255,0.85); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); z-index: 100; display: flex; align-items: center; justify-content: center; border-bottom: 1px solid var(--border-light); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; max-width: var(--max-width); padding: 0 40px; }
.nav-logo { font-size: 18px; font-weight: 700; letter-spacing: -0.03em; }
.nav-links { display: flex; list-style: none; gap: 32px; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--text-secondary); transition: color 0.2s; }
.nav-links a { position: relative; } .nav-links a::after { content: ""; position: absolute; bottom: -2px; left: 0; width: 0; height: 1.5px; background: var(--text); transition: width 0.3s ease; } .nav-links a:hover { color: var(--text); } .nav-links a:hover::after { width: 100%; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; }

.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 40px; }
.section { padding: 180px 0; }
.section-header { margin-bottom: 80px; }
.section-heading { font-size: clamp(36px, 4.5vw, 52px); font-weight: 700; letter-spacing: -0.04em; line-height: 1.1; margin-bottom: 16px; }
.section-sub { font-size: 17px; color: var(--text-secondary); max-width: 520px; line-height: 1.5; }
.hero { min-height: 100vh; display: flex; align-items: center; padding: 120px 0; background: #fafafa; position: relative; overflow: hidden; }
.hero-inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 80px; align-items: center; max-width: var(--max-width); margin: 0 auto; padding: 0 40px; width: 100%; }
.hero-portrait { display: flex; justify-content: center; }
.hero-photo { width: 320px; height: 320px; border-radius: 50%; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,0.1); }
.hero-photo img { width: 100%; height: 100%; object-fit: cover; }
.hero-info { display: flex; flex-direction: column; gap: 20px; }
.hero-name { font-size: clamp(48px, 5vw, 72px); font-weight: 700; letter-spacing: -0.04em; line-height: 1.05; }
.hero-role { font-size: 18px; color: var(--text-secondary); font-weight: 400; }
.hero-specialties { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-specialty { font-size: 13px; font-weight: 500; color: var(--text-secondary); background: #f0f0f0; padding: 6px 14px; border-radius: 20px; }
.hero-cta { display: inline-flex; align-items: center; font-size: 14px; font-weight: 500; color: #fff; background: #000; padding: 12px 28px; border-radius: 30px; transition: all 0.3s ease; width: fit-content; }
.hero-cta:hover { opacity: 1; transform: translateY(-2px) scale(1.03); box-shadow: 0 8px 25px rgba(0,0,0,0.2); }
.featured-grid { display: flex; flex-direction: column; gap: 180px; }
.featured-card { display: grid; grid-template-columns: 1.2fr 1fr; gap: 100px; align-items: center; }
.featured-card:nth-child(even) { direction: rtl; }
.featured-card:nth-child(even) > * { direction: ltr; }
.featured-card:nth-child(even) .featured-info { display: flex; flex-direction: column; align-items: flex-end; text-align: right; }
.featured-media { position: relative; overflow: hidden; border-radius: var(--radius-lg); }
.featured-img { aspect-ratio: 3/2; width: 100%; height: auto; border-radius: 20px; display: flex; align-items: center; justify-content: center; background: #f5f5f7; border-radius: var(--radius-lg); font-size: 15px; font-weight: 500; color: var(--text-tertiary); transition: transform 0.5s cubic-bezier(0.25,0.46,0.45,0.94); }
.featured-card:hover .featured-img { transform: scale(1.03); } .featured-card:hover .featured-media::after { opacity: 1; } .featured-media { position: relative; overflow: hidden; border-radius: var(--radius-lg); } .featured-media::after { content: ""; position: absolute; inset: 0; background: rgba(0,0,0,0.03); opacity: 0; transition: opacity 0.5s ease; pointer-events: none; border-radius: var(--radius-lg); }
.featured-info { display: flex; flex-direction: column; gap: 20px; }
.featured-label { font-size: 15px; font-weight: 500; color: var(--text-tertiary); letter-spacing: 0.04em; text-transform: uppercase; }
.featured-title { font-size: clamp(32px, 4vw, 46px); font-weight: 700; letter-spacing: -0.03em; line-height: 1.15; }
.featured-desc { font-size: 18px; max-width: 480px; color: var(--text-secondary); line-height: 1.6; }
.view-more-btn { font-size: 14px; font-weight: 500; color: var(--text); background: none; border: none; cursor: pointer; padding: 0; transition: opacity 0.2s; display: inline-flex; align-items: center; gap: 4px; }
.view-more-btn { font-size: 14px; font-weight: 500; color: var(--text); background: none; border: none; cursor: pointer; padding: 0; transition: all 0.3s ease; display: inline-flex; align-items: center; gap: 6px; } .view-more-btn:hover { opacity: 1; color: #000; gap: 10px; } .view-more-btn::after { content: "+"; font-size: 18px; transition: transform 0.3s ease; display: inline-block; } .view-more-btn:hover::after { transform: rotate(45deg); }
.view-more-btn::after { content: "+"; font-size: 18px; }
.project-details { max-height: 0; overflow: hidden; transition: max-height 0.6s cubic-bezier(0.25,0.46,0.45,0.94), opacity 0.4s ease; opacity: 0; margin-top: 0; }
.project-details.open { max-height: 2000px; opacity: 1; margin-top: 40px; }
.details-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.details-grid img { width: 100%; aspect-ratio: 3/2; width: 100%; height: auto; object-fit: cover; border-radius: var(--radius); transition: transform 0.4s ease; }
.details-grid img { width: 100%; aspect-ratio: 3/2; height: auto; object-fit: cover; border-radius: var(--radius); transition: transform 0.5s cubic-bezier(0.25,0.46,0.45,0.94), box-shadow 0.3s ease; } .details-grid img:hover { transform: scale(1.04); box-shadow: 0 12px 30px rgba(0,0,0,0.12); }
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.project-card { display: block; border-radius: var(--radius); overflow: hidden; transition: transform 0.3s ease; }
.project-card:hover { transform: translateY(-6px); box-shadow: 0 12px 30px rgba(0,0,0,0.08); } .project-card { display: block; border-radius: var(--radius); overflow: hidden; transition: all 0.4s cubic-bezier(0.25,0.46,0.45,0.94); }
.project-thumb { border-radius: var(--radius); overflow: hidden; aspect-ratio: 16/10; background: #f5f5f7; }
.project-img { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background: #f5f5f7; font-size: 14px; font-weight: 500; color: var(--text-tertiary); }
.project-thumb img { width: 100%; height: 100%; object-fit: cover; }
.project-info { padding: 24px 0; display: flex; flex-direction: column; gap: 8px; }
.project-name { font-size: 20px; font-weight: 600; letter-spacing: -0.01em; }
.project-category { font-size: 14px; color: var(--text-tertiary); }
.about-content { max-width: 800px; margin: 0 auto; text-align: center; }
.about-intro { font-size: clamp(22px, 3vw, 28px); margin-bottom: 72px; line-height: 1.6; color: var(--text-secondary); margin-bottom: 64px; }
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 64px; text-align: left; }
.skill-item { display: flex; flex-direction: column; gap: 8px; }
.skill-name { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; }
.skill-desc { font-size: 16px; color: var(--text-secondary); line-height: 1.5; }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; max-width: 880px; margin: 0 auto; }
.contact-item { display: flex; flex-direction: column; gap: 12px; padding: 40px; border-radius: var(--radius); background: #fafafa; transition: background 0.2s; }
.contact-item:hover { background: #f5f5f7; transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.06); } .contact-item { display: flex; flex-direction: column; gap: 12px; padding: 40px; border-radius: var(--radius); background: #fafafa; transition: all 0.3s cubic-bezier(0.25,0.46,0.45,0.94); }
.contact-label { font-size: 14px; font-weight: 500; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.04em; }
.contact-value { font-size: 17px; font-weight: 500; color: var(--text); }
.footer { padding: 40px 0; border-top: 1px solid var(--border-light); }
.footer p { font-size: 12px; color: var(--text-tertiary); text-align: center; }
@media (max-width: 1024px) { .hero-inner { grid-template-columns: 1fr; gap: 48px; text-align: center; padding: 0 32px; } .hero-info { align-items: center; } .hero-cta { margin: 0 auto; }  .featured-card { grid-template-columns: 1fr; gap: 40px; } .featured-card:nth-child(even) { direction: ltr; } .featured-card:nth-child(even) .featured-info { align-items: flex-start; text-align: left; } .details-grid { grid-template-columns: repeat(2, 1fr); } .projects-grid { grid-template-columns: repeat(2, 1fr); } .skills-grid { grid-template-columns: 1fr; gap: 40px; text-align: center; } .contact-grid { grid-template-columns: 1fr; gap: 32px; } .section { padding: 120px 0; } }
@media (max-width: 768px) { .container { padding: 0 24px; } .nav-links { display: none; position: fixed; top: var(--nav-height); left: 0; width: 100%; flex-direction: column; gap: 0; background: rgba(255,255,255,0.98); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); padding: 12px 0; border-bottom: 1px solid var(--border-light); } .nav-links.active { display: flex; } .nav-links a { display: block; padding: 14px 24px; font-size: 15px; } .nav-toggle { display: flex; } .hero-photo { max-width: 260px; } .section { padding: 100px 0; } .section-header { margin-bottom: 60px; } .featured-grid { gap: 80px; } .details-grid { grid-template-columns: 1fr; } .projects-grid { gap: 32px; } .about-intro { margin-bottom: 48px; } }
@media (max-width: 480px) { .container { padding: 0 20px; } .hero-inner { padding: 0 20px; } .projects-grid { grid-template-columns: 1fr; } .section { padding: 80px 0; } .section-header { margin-bottom: 48px; } .featured-grid { gap: 60px; } }