:root {
  --black: #1d1d1f;
  --gray: #6e6e73;
  --line: #d2d2d7;
  --soft: #f5f5f7;
  --white: #fff;
  --blue: #0066cc;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--black); background: var(--white); font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
section[id] { scroll-margin-top: 56px; }
.content-width { width: min(1180px, calc(100% - 44px)); margin-inline: auto; }

.site-nav { position: sticky; top: 0; z-index: 20; height: 52px; padding: 0 max(22px, calc((100vw - 1180px) / 2)); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; background: rgba(250,250,252,.84); border-bottom: 1px solid rgba(0,0,0,.08); backdrop-filter: saturate(180%) blur(20px); }
.wordmark { font-size: 16px; font-weight: 650; letter-spacing: -.02em; }
.site-nav nav { display: flex; gap: 32px; font-size: 12px; color: rgba(0,0,0,.68); }
.site-nav nav a:hover, .site-nav nav a:focus-visible { color: #000; }
.site-type { justify-self: end; padding: 6px 12px; border-radius: 999px; color: #3a3a3c; background: #e8e8ed; font-size: 11px; }

.hero { min-height: 920px; padding: 92px 0 0; text-align: center; background: linear-gradient(180deg, #fbfbfd, #f5f5f7); }
.hero-copy { padding-inline: 20px; }
.eyebrow, .section-label { margin: 0 0 22px; color: var(--gray); font-size: 12px; font-weight: 650; letter-spacing: .12em; }
.hero h1 { margin: 0; font-size: clamp(64px, 9vw, 116px); line-height: .94; letter-spacing: -.07em; }
.hero-intro { margin: 28px 0 0; font-size: clamp(19px, 2vw, 28px); letter-spacing: -.03em; }
.text-link { display: inline-block; margin-top: 28px; color: var(--blue); font-size: 17px; }
.text-link span { margin-left: 4px; font-size: 1.35em; }
.hero-image { position: relative; width: min(1180px, calc(100% - 44px)); height: 520px; margin: 68px auto 0; overflow: hidden; border-radius: 34px 34px 0 0; background: #d8d1ca; box-shadow: 0 28px 70px rgba(0,0,0,.12); }
.hero-image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 54%, rgba(0,0,0,.58)); }
.hero-image img { width: 100%; height: 100%; display: block; object-fit: cover; object-position: 50% 39%; filter: saturate(.84); }
.hero-image figcaption { position: absolute; z-index: 2; left: 34px; right: 34px; bottom: 28px; display: flex; justify-content: space-between; align-items: flex-end; color: #fff; text-align: left; }
.hero-image figcaption span { font-size: 12px; color: rgba(255,255,255,.68); }
.hero-image figcaption strong { font-size: 20px; letter-spacing: -.03em; }

.statement { padding: 150px 0 130px; color: #f5f5f7; background: #000; }
.section-label.light { color: #a1a1a6; }
.statement h2, .section-heading h2, .about h2 { margin: 0; font-size: clamp(48px, 6.5vw, 84px); line-height: 1.04; letter-spacing: -.06em; }
.statement-copy { max-width: 820px; margin: 46px 0 0; color: #a1a1a6; font-size: clamp(20px, 2.2vw, 30px); line-height: 1.45; font-weight: 520; letter-spacing: -.03em; }
.principle-row { margin-top: 92px; padding-top: 32px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid #424245; }
.principle-row div { display: flex; flex-direction: column; gap: 10px; }
.principle-row strong { color: #f5f5f7; font-size: 34px; letter-spacing: -.04em; }
.principle-row span { color: #86868b; font-size: 13px; }

.observations { padding: 150px 0; }
.section-heading > p:last-child { max-width: 680px; margin: 28px 0 0; color: var(--gray); font-size: 20px; line-height: 1.5; }
.section-heading.centered { text-align: center; }
.section-heading.centered > p:last-child { margin-inline: auto; }
.note-grid { margin-top: 72px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.note-card { position: relative; min-height: 680px; padding: 40px; overflow: hidden; border-radius: 30px; }
.note-card.wide { grid-column: 1 / -1; }
.note-card.pale { background: linear-gradient(145deg, #e9f3fc, #f8fbfe); }
.note-card.dark { color: #f5f5f7; background: #171719; }
.note-card.warm { background: linear-gradient(145deg, #f7eee9, #f6f6f6); }
.note-meta { display: flex; justify-content: space-between; align-items: center; }
.note-meta span { font-size: 14px; font-weight: 650; }
.note-meta small { color: var(--gray); font-size: 9px; letter-spacing: .12em; }
.note-card.dark .note-meta small { color: #86868b; }
.note-card h3 { margin: 48px 0 18px; font-size: clamp(36px, 4.2vw, 56px); line-height: 1.05; letter-spacing: -.055em; }
.note-card > p { position: relative; z-index: 2; max-width: 500px; margin: 0; color: var(--gray); font-size: 16px; line-height: 1.55; }
.note-card.dark > p { color: #a1a1a6; }
.note-card img { position: absolute; left: 18px; right: 18px; bottom: 18px; width: calc(100% - 36px); height: 320px; display: block; object-fit: cover; object-position: 62% center; border-radius: 22px; box-shadow: 0 20px 48px rgba(0,0,0,.14); }

.method { padding: 150px 0; background: var(--soft); }
.method-grid { margin-top: 72px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.method-grid article { min-height: 300px; padding: 30px; border-radius: 26px; background: #fff; }
.method-grid span { color: var(--blue); font-size: 12px; font-weight: 700; }
.method-grid h3 { margin: 66px 0 12px; font-size: 28px; letter-spacing: -.04em; }
.method-grid p { margin: 0; color: var(--gray); font-size: 15px; line-height: 1.55; }

.about { padding: 24px 0 120px; background: var(--soft); }
.about-card { padding: 72px; display: grid; grid-template-columns: 1fr 1fr; gap: 70px; border-radius: 32px; color: #f5f5f7; background: #000; }
.about h2 { font-size: clamp(44px, 5vw, 68px); }
.about-copy { align-self: end; }
.about-copy p { margin: 0 0 22px; color: #a1a1a6; font-size: 17px; line-height: 1.65; }

footer { padding: 48px 0 32px; background: #fff; }
.footer-inner > div:first-child { display: flex; flex-direction: column; gap: 5px; }
.footer-inner strong { font-size: 17px; }
.footer-inner span, .footer-inner > p { color: var(--gray); font-size: 11px; }
.footer-inner > p { max-width: 700px; margin: 28px 0; line-height: 1.55; }
.footer-bottom { padding-top: 20px; display: flex; justify-content: space-between; border-top: 1px solid var(--line); }
.footer-bottom a { color: var(--gray); font-size: 11px; }
.footer-bottom a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 900px) {
  .site-nav { grid-template-columns: 1fr 1fr; }
  .site-nav nav { display: none; }
  .note-grid, .method-grid, .about-card { grid-template-columns: 1fr; }
  .note-card.wide { grid-column: auto; }
  .method-grid { grid-template-columns: repeat(2, 1fr); }
  .about-card { gap: 48px; }
}

@media (max-width: 620px) {
  .content-width { width: calc(100% - 32px); }
  .site-nav { height: 48px; padding-inline: 16px; }
  .hero { min-height: 720px; padding-top: 62px; }
  .hero h1 { font-size: 58px; }
  .hero-intro { font-size: 19px; }
  .hero-image { width: calc(100% - 24px); height: 390px; margin-top: 52px; border-radius: 24px 24px 0 0; }
  .hero-image img { object-position: 76% center; }
  .hero-image figcaption { left: 20px; right: 20px; bottom: 20px; }
  .hero-image figcaption strong { display: none; }
  .statement, .observations, .method { padding: 96px 0; }
  .statement h2, .section-heading h2, .about h2 { font-size: 44px; }
  .principle-row { margin-top: 62px; grid-template-columns: 1fr; gap: 30px; }
  .note-grid, .method-grid { margin-top: 46px; grid-template-columns: 1fr; }
  .note-card { min-height: 620px; padding: 28px; border-radius: 24px; }
  .note-card h3 { font-size: 38px; }
  .note-card img { left: 14px; right: 14px; bottom: 14px; width: calc(100% - 28px); height: 300px; border-radius: 18px; }
  .method-grid article { min-height: 260px; padding: 26px; border-radius: 22px; }
  .method-grid h3 { margin-top: 52px; }
  .about { padding-bottom: 76px; }
  .about-card { width: calc(100% - 24px); padding: 48px 24px; border-radius: 24px; }
  .footer-bottom { flex-direction: column; gap: 9px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}