/* Great Arc: the studio index and 404. The app pages keep their own styles. */
:root {
  --paper: #F3F4F0;
  --paper-2: #E8ECE7;
  --ink: #16202A;
  --ink-2: #3B4752;
  --muted: #5F6B75;
  --rule: #D2D9DC;
  --chart: #2B5674;
  --f-text: "Newsreader", "Iowan Old Style", Georgia, serif;
  --f-ui: "IBM Plex Sans", -apple-system, "Segoe UI", sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --f-jp: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0E1419; --paper-2: #17212A; --ink: #E4E8E9; --ink-2: #B9C2C8;
    --muted: #8C99A4; --rule: #27333D; --chart: #8FB6D2;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-text);
  font-size: 1.125rem;
  line-height: 1.6;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--chart); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:focus-visible { outline: 2px solid var(--chart); outline-offset: 3px; border-radius: 2px; }
h1, h2 { font-weight: 400; line-height: 1.1; margin: 0; text-wrap: balance; }
p { margin: 0; }

.wrap { max-width: 60rem; margin: 0 auto; padding-inline: max(1rem, 4vw); }
.label { font-family: var(--f-ui); font-size: 0.72rem; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }

/* Masthead */
.masthead { display: grid; grid-template-columns: 9rem minmax(0, 1fr); gap: 0 2.5rem; padding-block: 4.5rem 3.5rem; }
.mark { width: 3rem; height: 3rem; display: block; }
.masthead h1 { font-size: clamp(2.8rem, 7vw, 4.6rem); font-weight: 340; letter-spacing: -0.022em; }
.masthead .line { font-size: 1.3rem; line-height: 1.5; color: var(--ink-2); margin-top: 1rem; }

/* Sections: a margin rail with a label, one reading column */
.sec { display: grid; grid-template-columns: 9rem minmax(0, 1fr); gap: 0.8rem 2.5rem; padding-block: 2.6rem 3rem; border-top: 1px solid var(--rule); }
.sec > .label { padding-top: 0.4rem; }

/* Apps */
.apps { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--ink); }
.app { display: grid; grid-template-columns: 3.5rem minmax(0, 1fr); gap: 0 1.2rem; padding-block: 1.5rem; border-bottom: 1px solid var(--rule); }
.app-icon { width: 3.5rem; height: 3.5rem; border-radius: 22.5%; display: block; }
.app-name { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.1rem 0.7rem; }
.app-name h2 { font-size: 1.6rem; }
.app-name .jp { font-family: var(--f-jp); font-weight: 500; font-size: 1.2rem; color: var(--ink-2); }
.app-name .kind { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.02em; color: var(--muted); }
.app .what { margin-top: 0.35rem; color: var(--ink-2); }
.links { display: flex; flex-wrap: wrap; gap: 0.3rem 1.3rem; margin-top: 0.75rem; font-family: var(--f-ui); font-size: 0.88rem; }

.contact { font-family: var(--f-ui); font-size: 0.95rem; color: var(--ink-2); }
.contact a { font-size: 1.05rem; }

/* 404 */
.lost { padding-block: 1rem 4rem; }
.lost h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); font-weight: 340; letter-spacing: -0.015em; }
.lost p { margin-top: 1rem; color: var(--ink-2); }

/* Footer */
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.6rem 1.5rem; padding-block: 1.4rem 2.4rem; border-top: 1px solid var(--rule); font-family: var(--f-ui); font-size: 0.82rem; color: var(--muted); }
.foot a { color: var(--ink-2); }

@media (max-width: 720px) {
  .masthead, .sec { grid-template-columns: 1fr; }
  .masthead { padding-block: 3rem 2.5rem; }
  .masthead .mark { margin-bottom: 1.4rem; }
}