:root {
  --paper: #f6f5f0;
  --ink: #192a42;
  --line: #c9ced1;
  --body: 18px;
  --heading: 24px;
  --display: clamp(36px, 3.5vw, 50px);
}
* { box-sizing: border-box; }
html { background: var(--paper); color: var(--ink); font-family: 'Source Sans 3', sans-serif; font-size: var(--body); -webkit-font-smoothing: antialiased; }
body { margin: 0; }
a { color: inherit; touch-action: manipulation; text-underline-offset: 6px; text-decoration-thickness: 1px; }
a:focus-visible { outline: 2px solid var(--ink); outline-offset: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: -100px; left: 24px; z-index: 2; padding: 12px; background: white; }
.skip-link:focus { top: 20px; }
.page { max-width: 1480px; margin: 0 auto; padding: 28px 4.2vw 40px; }
.masthead { display: flex; align-items: center; justify-content: space-between; min-height: 66px; margin-bottom: 26px; gap: 24px; }
.signature { display: block; width: 246px; height: 81px; object-fit: contain; mix-blend-mode: multiply; }
.home-base { font-size: var(--body); font-weight: 400; }
.introduction { display: grid; grid-template-columns: 1.08fr 1fr; gap: 5vw; align-items: center; }
.identity h1 { font-size: var(--display); font-weight: 600; line-height: 1.12; letter-spacing: -.02em; margin: 0 0 24px; }
.identity p { max-width: 490px; font-size: var(--body); line-height: 1.6; margin: 0; }
.portrait { margin: 0; aspect-ratio: 1.7; overflow: hidden; background: #050606; border-radius: 18px; box-shadow: 0 12px 32px rgb(25 42 66 / 13%), 0 2px 6px rgb(25 42 66 / 8%); }
.portrait img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: 50% 46%; }
.themes { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 4.2vw; border-top: 1px solid var(--line); margin-top: 38px; padding-top: 30px; }
.theme { display: flex; flex-direction: column; min-width: 0; }
.theme h2 { font-size: var(--heading); font-weight: 600; letter-spacing: -.01em; line-height: 1.25; margin: 0 0 16px; }
.theme p { font-size: var(--body); font-weight: 400; line-height: 1.6; margin: 0 0 18px; }
.brand-link, .community-link { display: flex; align-items: center; gap: 14px; margin-top: auto; min-height: 72px; width: fit-content; text-decoration: none; font-size: var(--body); font-weight: 600; }
.brand-frame { display: flex; align-items: center; justify-content: center; width: 64px; height: 64px; flex: 0 0 64px; }
.brand-frame img { object-fit: contain; display: block; }
.chip { width: 86px; height: 86px; mix-blend-mode: multiply; }
.fe-mark { width: 72px; height: 72px; }
.link-label { line-height: 1.6; text-decoration: underline; text-underline-offset: 6px; text-decoration-color: #84909d; text-decoration-thickness: 1px; }
.link-label > span { display: inline-block; margin-left: 7px; }
.brand-link:hover .link-label, .community-link:hover .link-label { text-decoration-color: var(--ink); text-decoration-thickness: 2px; }
@media (min-width: 1550px) { .page { padding-inline: 64px; } .themes { gap: 64px; } .introduction { gap: 76px; } }
@media (max-width: 1100px) {
  :root { --heading: 22px; --display: 38px; }
  .page { padding: 24px 32px 36px; }
  .introduction { gap: 32px; }
  .themes { gap: 28px; }
  .portrait { aspect-ratio: 1.3; }
  .brand-link { gap: 8px; }
  .brand-frame { width: 48px; height: 54px; flex-basis: 48px; }
  .chip { width: 70px; height: 70px; }
  .fe-mark { width: 60px; height: 60px; }
}
@media (max-width: 800px) {
  :root { --heading: 24px; --display: clamp(34px, 6vw, 44px); }
  .page { padding: 18px 26px 32px; }
  .masthead { margin-bottom: 26px; }
  .signature { width: 219px; height: 71px; }
  .home-base { max-width: 95px; line-height: 1.5; text-align: right; }
  .introduction { grid-template-columns: 1fr; gap: 28px; }
  .identity h1 { margin-bottom: 20px; }
  .identity p { max-width: 580px; }
  .portrait { aspect-ratio: 1.7; }
  .themes { grid-template-columns: 1fr; gap: 26px; margin-top: 30px; padding-top: 26px; }
  .theme + .theme { border-top: 1px solid var(--line); padding-top: 26px; }
  .theme h2 br { display: none; }
  .theme h2 { max-width: 400px; }
  .theme p { max-width: 580px; margin-bottom: 12px; }
  .brand-link, .community-link { min-height: 60px; }
  .brand-frame { width: 54px; flex-basis: 54px; }
}
@media (prefers-reduced-motion: no-preference) {
  .link-label { transition: text-decoration-color .15s; }
}