/* RYUKI HARA — site.css
   生成りの紙に墨、差し色は朱。見出しは明朝、本文はゴシック、ラベルは等幅。 */

:root {
  --paper: #f5f1e8;
  --paper-2: #ece6d8;
  --card: #fbf9f4;
  --ink: #1c1a16;
  --ink-2: #57524a;
  --ink-3: #8a8479;
  --line: #ddd5c4;
  --accent: #c8431c;
  --accent-ink: #fff8f2;
  --live: #2f7a4b;
  --soon: #b0700c;
  --dev: #6d685f;

  --cat-app: #2d5a7b;
  --cat-game: #c8431c;
  --cat-service: #3f6e4f;
  --cat-system: #3a3631;

  --serif: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: "Zen Kaku Gothic New", -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;

  --r: 18px;
  --gutter: clamp(16px, 4vw, 40px);
  --max: 1160px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #15130f;
    --paper-2: #1d1a15;
    --card: #211e18;
    --ink: #f0ebe1;
    --ink-2: #bdb5a7;
    --ink-3: #8b8477;
    --line: #36312a;
    --accent: #ec6a3f;
    --accent-ink: #1a0d06;
    --live: #6cc28c;
    --soon: #e3a33c;
    --dev: #a39c90;
    --cat-app: #5b8db3;
    --cat-game: #ec6a3f;
    --cat-service: #6fa580;
    --cat-system: #8d857a;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: .02em;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt" 1;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { margin: 0; font-weight: 700; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.wrap--narrow { max-width: 820px; }
.pc { display: none; }
@media (min-width: 720px) { .pc { display: inline; } }
.muted { color: var(--ink-3); }
.small { font-size: .82rem; }

.eyebrow {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--accent);
  margin-bottom: 14px;
}

/* ---------------------------------------------------------------- header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header__in { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.brand { display: flex; align-items: baseline; gap: 10px; text-decoration: none; white-space: nowrap; }
.brand__en { font-family: var(--mono); font-size: .9rem; letter-spacing: .14em; }
.brand__ja { font-family: var(--serif); font-size: .82rem; color: var(--ink-3); }
.site-nav { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.site-nav::-webkit-scrollbar { display: none; }
.site-nav a {
  text-decoration: none; font-size: .86rem; color: var(--ink-2);
  padding: 6px 12px; border-radius: 999px; white-space: nowrap;
}
.site-nav a:hover { color: var(--ink); background: var(--paper-2); }
.site-nav a[aria-current="page"] { color: var(--ink); }
@media (max-width: 640px) {
  .brand__ja { display: none; }
  .site-nav a { padding: 6px 8px; font-size: .8rem; }
  .site-nav a:last-child { display: none; }
}

/* ---------------------------------------------------------------- hero */
.hero { padding: clamp(48px, 9vw, 112px) 0 clamp(56px, 8vw, 96px); }
.hero__in { display: grid; gap: clamp(40px, 6vw, 72px); align-items: center; }
@media (min-width: 900px) { .hero__in { grid-template-columns: minmax(0,1.1fr) minmax(0,1fr); } }
.hero__title {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.9rem, 8.4vw, 3.6rem);
  line-height: 1.36;
  letter-spacing: .04em;
}
.hero__title span { display: block; white-space: nowrap; }
@media (min-width: 900px) { .hero__title { font-size: clamp(2.6rem, 4.4vw, 3.6rem); } }
.hero__sub { margin-top: 28px; color: var(--ink-2); font-size: clamp(.95rem, 1.6vw, 1.05rem); }
.stats { display: flex; flex-wrap: wrap; gap: 16px clamp(20px, 4vw, 44px); margin: 36px 0 0; padding-top: 24px; border-top: 1px solid var(--line); }
.stats a { display: flex; flex-direction: column; text-decoration: none; }
.stats a:hover b { color: var(--accent); }
.stats span { font-size: .76rem; color: var(--ink-3); }
.stats b { font-family: var(--serif); font-weight: 800; font-size: clamp(1.9rem, 4vw, 2.6rem); line-height: 1.1; }

.wall {
  display: grid;
  grid-template-columns: repeat(var(--cols, 4), minmax(0, 1fr));
  gap: clamp(10px, 1.6vw, 18px);
  padding: clamp(18px, 3vw, 32px);
  background: var(--paper-2);
  border-radius: 28px;
  border: 1px solid var(--line);
}
.wall__item { display: block; border-radius: 22%; transition: transform .25s cubic-bezier(.2,.8,.2,1); }
.wall__item:nth-child(odd) { transform: translateY(8%); }
.wall__item img { width: 100%; aspect-ratio: 1; border-radius: 22%; box-shadow: 0 1px 0 rgba(0,0,0,.05), 0 8px 18px -10px rgba(40,30,10,.45); }
.wall__item:hover { transform: translateY(-4%) rotate(-3deg); }
@media (prefers-reduced-motion: no-preference) {
  .wall__item { animation: rise .7s cubic-bezier(.2,.8,.2,1) both; animation-delay: calc(var(--i) * 45ms); }
  @keyframes rise { from { opacity: 0; translate: 0 14px; } }
}

/* ---------------------------------------------------------------- sections */
.section { padding: clamp(64px, 9vw, 112px) 0; }
.section--tint { background: var(--paper-2); }
.section--line { border-top: 1px solid var(--line); }
.section--flush { padding-top: 0; }
.section__head { margin-bottom: 36px; }
.section__title { font-family: var(--serif); font-weight: 800; font-size: clamp(1.7rem, 3.6vw, 2.4rem); line-height: 1.35; }
.section__title--sm { font-size: clamp(1.25rem, 2.4vw, 1.5rem); margin-bottom: 24px; }
.section__lead { margin-top: 16px; color: var(--ink-2); max-width: 40em; }

.page-head { padding: clamp(56px, 8vw, 96px) 0 clamp(36px, 5vw, 56px); }
.page-title { font-family: var(--serif); font-weight: 800; font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.3; }
.page-title--sm { font-size: clamp(1.5rem, 3.6vw, 2.1rem); }
.page-title__en { display: block; font-family: var(--mono); font-weight: 500; font-size: .8rem; letter-spacing: .16em; color: var(--ink-3); margin-top: 10px; }

/* ---------------------------------------------------------------- groups + grid */
.group { scroll-margin-top: 88px; }
.group + .group { margin-top: clamp(56px, 7vw, 88px); }
.group__head { display: grid; gap: 6px 32px; align-items: end; padding-bottom: 18px; margin-bottom: 22px; border-bottom: 1px solid var(--line); }
@media (min-width: 900px) { .group__head { grid-template-columns: auto 1fr; } }
.group__title { font-family: var(--serif); font-weight: 800; font-size: clamp(1.35rem, 2.6vw, 1.7rem); line-height: 1.3; display: flex; align-items: baseline; gap: 14px; }
.group__en { font-family: var(--mono); font-weight: 500; font-size: .7rem; letter-spacing: .16em; color: var(--ink-3); }
.group__intro { color: var(--ink-2); font-size: .92rem; }
.grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 620px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 980px) { .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; } }

.card {
  display: flex; flex-direction: column;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 22px 22px 20px; text-decoration: none; min-width: 0;
  transition: transform .2s cubic-bezier(.2,.8,.2,1), border-color .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-3px); border-color: var(--ink-3); box-shadow: 0 14px 30px -22px rgba(40,30,10,.5); }
.card__top { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 18px; }
.card__cat { font-family: var(--mono); font-size: .68rem; letter-spacing: .12em; color: var(--ink-3); }
.card__name { font-size: 1.12rem; margin-top: 2px; line-height: 1.5; }
.card__lead { color: var(--ink-2); font-size: .9rem; margin-top: 6px; line-height: 1.7; flex: 1; }
.tags { list-style: none; margin: 16px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.tags li { font-family: var(--mono); font-size: .66rem; color: var(--ink-3); border: 1px solid var(--line); border-radius: 6px; padding: 1px 7px; }

/* icons */
.icon { border-radius: 22%; flex: none; object-fit: cover; }
.icon--md { width: 56px; height: 56px; box-shadow: 0 6px 14px -10px rgba(40,30,10,.55); }
.icon--lg { width: clamp(84px, 14vw, 120px); height: clamp(84px, 14vw, 120px); box-shadow: 0 12px 28px -16px rgba(40,30,10,.6); }
.icon--mark { display: grid; place-items: center; color: #fff; font-family: var(--serif); font-weight: 800; }
.icon--md.icon--mark { font-size: 1.35rem; }
.icon--lg.icon--mark { font-size: 2.6rem; }
.icon--app { background: var(--cat-app); }
.icon--game { background: var(--cat-game); }
.icon--service { background: var(--cat-service); }
.icon--system { background: var(--cat-system); }
.icon--mark span { letter-spacing: 0; }

/* status */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .72rem; font-weight: 500; white-space: nowrap;
  padding: 2px 10px 2px 8px; border-radius: 999px;
  border: 1px solid currentColor;
}
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.pill--live { color: var(--live); }
.pill--soon { color: var(--soon); }
.pill--dev { color: var(--dev); }

/* ---------------------------------------------------------------- writing */
.channels { display: grid; gap: 16px; }
@media (min-width: 720px) { .channels { grid-template-columns: minmax(0,1fr) minmax(0,1fr); } }
.channel {
  display: flex; flex-direction: column; gap: 8px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 26px; text-decoration: none; transition: border-color .2s, transform .2s;
}
a.channel:hover { border-color: var(--ink-3); transform: translateY(-2px); }
.channel__head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.channel__name { font-family: var(--serif); font-weight: 800; font-size: 1.6rem; line-height: 1.2; }
.channel__handle { font-family: var(--mono); font-size: .8rem; color: var(--ink-3); }
.channel__cadence { font-size: .78rem; color: var(--accent); }
.channel__desc { color: var(--ink-2); font-size: .93rem; flex: 1; }

.topics { list-style: none; padding: 0; margin: 40px 0 0; display: grid; gap: 0; border-top: 1px solid var(--line); }
@media (min-width: 900px) { .topics { grid-template-columns: repeat(3, minmax(0,1fr)); column-gap: 32px; } }
.topics li { padding: 22px 0; border-bottom: 1px solid var(--line); }
.topics h3 { font-family: var(--serif); font-size: 1.05rem; }
.topics p { color: var(--ink-2); font-size: .9rem; margin-top: 6px; }

/* ---------------------------------------------------------------- offer / about */
.offer { display: grid; gap: 28px; align-items: end; }
@media (min-width: 900px) { .offer { grid-template-columns: minmax(0,1.4fr) minmax(0,1fr); } }
.offer__actions { display: flex; flex-wrap: wrap; gap: 10px; }
@media (min-width: 900px) { .offer__actions { justify-content: flex-end; } }

.about-teaser > * { max-width: 860px; }
.about-teaser__text { font-family: var(--serif); font-weight: 600; font-size: clamp(1.2rem, 2.6vw, 1.6rem); line-height: 1.8; }
.link-arrow { display: inline-flex; align-items: center; gap: 8px; margin-top: 20px; font-size: .9rem; font-weight: 500; color: var(--accent); text-decoration: none; }
.link-arrow::after { content: "→"; transition: transform .2s; }
a.link-arrow:hover::after, a:hover > .link-arrow::after { transform: translateX(4px); }

/* ---------------------------------------------------------------- buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 22px; border-radius: 999px;
  border: 1px solid var(--ink); color: var(--ink); background: transparent;
  font-size: .92rem; font-weight: 500; text-decoration: none; white-space: nowrap;
  transition: background .15s, color .15s, transform .15s;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }

/* ---------------------------------------------------------------- work detail */
.work { padding: 32px 0 clamp(56px, 8vw, 96px); }
.back { display: inline-flex; gap: 8px; font-size: .85rem; color: var(--ink-3); text-decoration: none; margin-bottom: 32px; }
.back::before { content: "←"; }
.back:hover { color: var(--ink); }
.work__head { display: grid; gap: 24px; align-items: start; }
@media (min-width: 720px) { .work__head { grid-template-columns: auto 1fr; gap: 36px; } }
.work__meta { display: flex; align-items: center; gap: 12px; font-family: var(--mono); font-size: .72rem; letter-spacing: .12em; color: var(--ink-3); }
.work__name { font-family: var(--serif); font-weight: 800; font-size: clamp(1.9rem, 5vw, 3rem); line-height: 1.3; margin-top: 10px; }
.work__lead { font-family: var(--serif); font-weight: 600; font-size: clamp(1.05rem, 2.2vw, 1.35rem); color: var(--ink-2); margin-top: 12px; line-height: 1.7; }
.work__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 26px; }

.wrap--bleed { padding-right: 0; }
.shots {
  display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory;
  padding: 44px var(--gutter) 12px 0; scrollbar-width: thin;
}
.shots img {
  flex: none; width: clamp(180px, 24vw, 250px); height: auto;
  border-radius: 20px; border: 1px solid var(--line); scroll-snap-align: start;
  background: var(--paper-2);
}

.work__body { display: grid; gap: 40px; margin-top: clamp(40px, 6vw, 64px); }
@media (min-width: 900px) { .work__body { grid-template-columns: minmax(0,1.5fr) minmax(0,1fr); gap: 64px; } }
.prose { max-width: 38em; }
.prose p + p { margin-top: 1.1em; }
.prose h2 { font-family: var(--serif); font-size: 1.25rem; margin: 40px 0 14px; }
.prose--lg p { font-size: 1.05rem; }
.work__summary { font-weight: 700; font-size: 1.05rem; margin-bottom: 1.1em; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.checks li { position: relative; padding-left: 28px; }
.checks li::before {
  content: ""; position: absolute; left: 2px; top: .62em; width: 12px; height: 7px;
  border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg);
}

.spec { margin: 0; border-top: 1px solid var(--line); }
.spec div { display: grid; grid-template-columns: 7em 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.spec dt { font-size: .8rem; color: var(--ink-3); padding-top: 2px; }
.spec dd { margin: 0; font-size: .92rem; overflow-wrap: anywhere; }
.spec dd a { color: var(--accent); }
.spec--legal div { grid-template-columns: 1fr; gap: 4px; padding: 18px 0; }
@media (min-width: 720px) { .spec--legal div { grid-template-columns: 12em 1fr; gap: 24px; } }
.spec--legal + p { margin-top: 24px; }

/* ---------------------------------------------------------------- footer */
.site-footer { background: var(--ink); color: var(--paper); padding: clamp(56px, 8vw, 96px) 0 32px; }
.site-footer .eyebrow { color: color-mix(in srgb, var(--accent) 70%, var(--paper)); }
.footer-cta__text { font-family: var(--serif); font-weight: 600; font-size: clamp(1.25rem, 3vw, 1.8rem); line-height: 1.6; }
.mail {
  display: inline-block; margin-top: 24px;
  font-family: var(--mono); font-size: clamp(1rem, 3.4vw, 1.6rem);
  text-decoration: none; border-bottom: 1px solid currentColor; overflow-wrap: anywhere;
}
.mail:hover { color: var(--accent); }
.mail--ink { color: var(--ink); }
.footer-bottom { margin-top: 64px; padding-top: 24px; border-top: 1px solid color-mix(in srgb, var(--paper) 18%, transparent); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 6px 20px; }
.footer-links a, .copy { font-size: .8rem; color: color-mix(in srgb, var(--paper) 62%, transparent); text-decoration: none; }
.footer-links a:hover { color: var(--paper); }