@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&family=Space+Grotesk:wght@500;600&display=swap");

:root {
  --paper: #f3f1eb;
  --paper-deep: #e9e6dd;
  --ink: #202124;
  --muted: #686a6d;
  --accent: #647c72;
  --accent-light: #dce5df;
  --line: rgba(32, 33, 36, 0.18);
  --content: 1180px;
  --pad: clamp(24px, 5vw, 72px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 8px 14px;
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-160%);
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100%, calc(var(--content) + var(--pad) * 2));
  margin: auto;
  padding: 30px var(--pad);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .12em;
}

.wordmark-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }

.site-nav { display: flex; gap: clamp(20px, 4vw, 50px); font-size: 13px; font-weight: 600; letter-spacing: .08em; }

.site-nav a { position: relative; }
.site-nav a::after { content: ""; position: absolute; inset: auto 0 -5px; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .25s ease; }
.site-nav a:hover::after { transform: scaleX(1); transform-origin: left; }

main { overflow: hidden; }

.hero {
  position: relative;
  display: grid;
  place-items: center start;
  min-height: min(880px, 100svh);
  padding: 120px max(var(--pad), calc((100vw - var(--content)) / 2 + var(--pad))) 80px;
  border-bottom: 1px solid var(--line);
}

.hero::before {
  content: "";
  position: absolute;
  width: min(52vw, 680px);
  aspect-ratio: 1;
  right: -9vw;
  top: 7vh;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.hero::after {
  content: "";
  position: absolute;
  width: min(24vw, 300px);
  aspect-ratio: 1;
  right: 18vw;
  bottom: 10vh;
  background: var(--accent-light);
  border-radius: 50%;
  mix-blend-mode: multiply;
}

.hero-copy { position: relative; z-index: 2; }
.eyebrow, .section-index, .project-en, .scroll-note, .project-status { font-family: "Space Grotesk", sans-serif; letter-spacing: .15em; }
.eyebrow { margin: 0 0 30px; color: var(--accent); font-size: 12px; font-weight: 600; }

.hero h1 {
  margin: 0;
  font-size: clamp(48px, 7.4vw, 108px);
  line-height: 1.06;
  letter-spacing: -.055em;
  font-weight: 600;
}

.hero-company { margin: 36px 0 0; font-size: clamp(14px, 1.3vw, 17px); letter-spacing: .08em; }

.hero-mark {
  position: absolute;
  z-index: 3;
  right: max(var(--pad), calc((100vw - var(--content)) / 2 + var(--pad)));
  top: 28%;
  display: flex;
  flex-direction: column;
  color: var(--accent);
  font-size: clamp(38px, 5vw, 72px);
  font-weight: 600;
  line-height: .95;
}

.scroll-note { position: absolute; bottom: 42px; left: 22px; margin: 0; color: var(--muted); font-size: 9px; writing-mode: vertical-rl; }

.section-grid {
  display: grid;
  grid-template-columns: minmax(240px, .75fr) minmax(0, 1.25fr);
  gap: clamp(50px, 9vw, 140px);
  max-width: calc(var(--content) + var(--pad) * 2);
  margin: 0 auto;
  padding: clamp(90px, 12vw, 170px) var(--pad);
  border-bottom: 1px solid var(--line);
}

.section-heading { align-self: start; }
.section-index { margin: 0 0 22px; color: var(--accent); font-size: 11px; font-weight: 600; }
.section-heading h2 { margin: 0; font-size: clamp(32px, 4vw, 56px); line-height: 1.2; letter-spacing: -.04em; }
.section-body { max-width: 710px; }
.lead-copy { font-size: clamp(18px, 2vw, 27px); line-height: 1.9; }
.lead-copy p { margin: 0 0 34px; }
.lead-copy p:last-child { margin: 0; color: var(--muted); font-size: .68em; line-height: 2; }

.business { background: var(--paper-deep); max-width: none; padding-left: max(var(--pad), calc((100vw - var(--content)) / 2 + var(--pad))); padding-right: max(var(--pad), calc((100vw - var(--content)) / 2 + var(--pad))); }
.service-list { margin: 0; padding: 0; list-style: none; }
.service-list li { display: grid; grid-template-columns: 42px 1fr auto; align-items: baseline; gap: 16px; padding: 26px 0; border-top: 1px solid var(--line); }
.service-list li:last-child { border-bottom: 1px solid var(--line); }
.service-list span, .service-list small { color: var(--muted); font-family: "Space Grotesk", sans-serif; font-size: 10px; letter-spacing: .1em; }
.service-list strong { font-size: clamp(17px, 1.8vw, 23px); font-weight: 500; }

.project-heading { position: relative; }
.project-en { margin: 10px 0 0; color: var(--muted); font-size: 10px; }
.project-card { position: relative; min-height: 330px; padding: clamp(30px, 5vw, 64px); background: var(--accent); color: #fff; display: flex; flex-direction: column; justify-content: flex-end; overflow: hidden; }
.project-card p { position: relative; z-index: 2; max-width: 500px; margin: 0; font-size: clamp(16px, 1.8vw, 22px); }
.project-status { position: absolute; top: 28px; right: 30px; font-size: 9px; opacity: .75; }
.cat-mark { position: absolute; top: -30px; left: clamp(20px, 5vw, 80px); width: 190px; height: 190px; display: grid; place-items: center; border: 2px solid rgba(255,255,255,.45); border-radius: 48% 48% 45% 45%; font-size: 82px; font-weight: 700; opacity: .38; transform: rotate(-5deg); }
.ear { position: absolute; top: -32px; width: 70px; height: 70px; border: 2px solid rgba(255,255,255,.45); transform: rotate(45deg); }
.ear-left { left: 15px; }.ear-right { right: 15px; }
.cat-face { position: relative; z-index: 1; }

.contact { padding: clamp(100px, 15vw, 210px) max(var(--pad), calc((100vw - var(--content)) / 2 + var(--pad))); background: var(--ink); color: var(--paper); }
.contact .section-index { color: #9fb3aa; }
.contact h2 { margin: 0 0 60px; max-width: 900px; font-size: clamp(42px, 7vw, 96px); line-height: 1.15; letter-spacing: -.05em; }
.mail-link { display: flex; justify-content: space-between; align-items: center; max-width: 760px; padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.4); font-family: "Space Grotesk", sans-serif; font-size: clamp(17px, 2vw, 24px); }
.mail-link span { transition: transform .2s ease; }.mail-link:hover span { transform: translate(4px, -4px); }

.site-footer { display: grid; grid-template-columns: 1fr auto auto; gap: 50px; align-items: end; padding: 42px max(var(--pad), calc((100vw - var(--content)) / 2 + var(--pad))); background: var(--ink); color: rgba(255,255,255,.66); border-top: 1px solid rgba(255,255,255,.14); font-size: 11px; }
.site-footer p { margin: 2px 0; }.footer-wordmark { color: var(--paper); }
.site-footer > a:last-child { text-decoration: underline; text-underline-offset: 4px; }

.policy-page { background: var(--paper); }
.policy-header { position: relative; border-bottom: 1px solid var(--line); }
.policy-main { max-width: calc(var(--content) + var(--pad) * 2); margin: 0 auto; padding: clamp(80px, 10vw, 140px) var(--pad) clamp(100px, 14vw, 180px); overflow: visible; }
.policy-title { display: grid; grid-template-columns: 1fr 2fr; gap: 40px; align-items: end; margin-bottom: 90px; }
.policy-title .section-index { grid-column: 1 / -1; }
.policy-title h1 { margin: 0; font-size: clamp(50px, 8vw, 105px); line-height: 1; letter-spacing: -.06em; }
.policy-title > p:last-child { margin: 0 0 6px; color: var(--muted); text-align: right; font-size: 13px; }
.policy-content { max-width: 780px; margin-left: auto; }
.policy-content section { display: grid; grid-template-columns: 180px 1fr; gap: 45px; padding: 34px 0; border-top: 1px solid var(--line); }
.policy-content section:last-child { border-bottom: 1px solid var(--line); }
.policy-content h2 { margin: 0; font-size: 15px; font-weight: 600; }
.policy-content p { grid-column: 2; margin: 0 0 16px; color: #4f5154; font-size: 14px; line-height: 2; }
.policy-content h2 + p { margin-top: 0; }
.policy-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }

@media (max-width: 720px) {
  .site-header { padding-top: 22px; }
  .site-nav { gap: 16px; font-size: 11px; }
  .site-nav a:nth-child(2) { display: none; }
  .hero { min-height: 760px; align-items: center; padding-top: 120px; }
  .hero::before { width: 90vw; right: -45vw; top: 20%; }
  .hero::after { width: 45vw; right: 8vw; bottom: 14%; }
  .hero h1 { font-size: clamp(46px, 13vw, 66px); }
  .hero-mark { top: auto; right: 28px; bottom: 150px; font-size: 40px; }
  .section-grid { grid-template-columns: 1fr; gap: 45px; padding-block: 88px; }
  .service-list li { grid-template-columns: 32px 1fr; }
  .service-list small { display: none; }
  .project-card { min-height: 360px; }
  .contact { padding-block: 110px; }
  .site-footer { grid-template-columns: 1fr; gap: 24px; align-items: start; }
  .policy-title { grid-template-columns: 1fr; margin-bottom: 60px; }
  .policy-title > p:last-child { text-align: left; }
  .policy-content section { grid-template-columns: 1fr; gap: 16px; }
  .policy-content p { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}