/* ============================================================
   KR — Keio Robotics / site styles (2026 renewal)
   紙・墨・信号黄。罫線と余白で組む、実験ノートのような誌面。
   ============================================================ */

:root {
  --paper:      #F3F2EE;
  --paper-2:    #E9E7E1;
  --paper-3:    #DEDBD3;
  --ink:        #0C0C0D;
  --ink-2:      #34332F;
  --ink-3:      #6A6962;
  --line:       #D3D0C7;
  --signal:     #F2DD27;
  --signal-2:   #E3CC10;
  --night:      #0E0F10;
  --night-2:    #18191B;
  --night-line: #2E2F32;
  --night-text: #ECEBE6;
  --night-mute: #9A9993;
  --live:       #2FA968;

  --font-latin: 'Jost', 'Zen Kaku Gothic New', system-ui, sans-serif;
  --font-jp:    'Zen Kaku Gothic New', 'Jost', 'Hiragino Kaku Gothic ProN', system-ui, sans-serif;
  --font-mono:  'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  --t-hero:  clamp(2.35rem, 6.4vw, 6.6rem);
  --t-h1:    clamp(2.1rem, 4.8vw, 4.4rem);
  --t-h2:    clamp(1.65rem, 3.2vw, 2.9rem);
  --t-h3:    clamp(1.2rem, 1.7vw, 1.55rem);
  --t-lead:  clamp(1.04rem, 1.3vw, 1.22rem);
  --t-body:  1rem;
  --t-small: .875rem;
  --t-label: .7rem;

  --maxw: 1440px;
  --gutter: clamp(16px, 3.4vw, 52px);
  --sec: clamp(76px, 10.5vw, 156px);
  --head-h: 64px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--head-h) + 12px); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-jp);
  font-size: var(--t-body);
  line-height: 1.85;
  font-feature-settings: "palt" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
html[lang="en"] body { font-family: var(--font-latin); line-height: 1.65; font-feature-settings: normal; }
img, video, canvas, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
[hidden] { display: none !important; }
::selection { background: var(--signal); color: var(--ink); }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.on-night :focus-visible, .site-foot :focus-visible { outline-color: var(--signal); }

.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.sr-only { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: fixed; left: 12px; top: -60px; z-index: 200; background: var(--signal); color: var(--ink); padding: 8px 14px; font-size: var(--t-small); }
.skip:focus { top: 12px; }

/* ---------- type helpers ---------- */
.label {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  line-height: 1.4;
  color: var(--ink-3);
}
.on-night .label { color: var(--night-mute); }
.mono { font-family: var(--font-mono); font-feature-settings: normal; }
.latin { font-family: var(--font-latin); }

.h-hero, .h1, .h2, .h3 { font-weight: 500; letter-spacing: -.01em; text-wrap: balance; }
.h-hero { font-size: var(--t-hero); line-height: 1.12; letter-spacing: -.02em; }
.h1 { font-size: var(--t-h1); line-height: 1.16; }
.h2 { font-size: var(--t-h2); line-height: 1.24; }
.h3 { font-size: var(--t-h3); line-height: 1.4; }
html[lang="en"] .h-hero, html[lang="en"] .h1, html[lang="en"] .h2 { font-family: var(--font-latin); line-height: 1.04; letter-spacing: -.025em; }
html[lang="en"] .h3 { font-family: var(--font-latin); }
.lead { font-size: var(--t-lead); line-height: 1.95; color: var(--ink-2); max-width: 38em; text-wrap: pretty; }
html[lang="en"] .lead { line-height: 1.6; }
.on-night .lead { color: var(--night-text); opacity: .86; }
.muted { color: var(--ink-3); }
html[lang="ja"] :is(.h-hero, .h1, .h2, .h3, .join-title, .pj-goal p, .pj-sub, .foot-statement span, .news-feat h2, .article-head h1) { word-break: auto-phrase; }
.ib { display: inline-block; }
.mark { background: linear-gradient(transparent 58%, var(--signal) 58%, var(--signal) 92%, transparent 92%); padding-inline: .06em; }
.nowrap { white-space: nowrap; }
.br-pc { display: inline; }

/* ---------- buttons / links ---------- */
.btn {
  --bg: var(--ink); --fg: var(--paper);
  display: inline-flex; align-items: center; gap: 14px;
  min-height: 52px; padding: 0 22px 0 24px;
  background: var(--bg); color: var(--fg);
  border: 1px solid var(--bg);
  font-family: var(--font-latin); font-weight: 500; font-size: .95rem; letter-spacing: .02em;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
html[lang="ja"] .btn { font-family: var(--font-jp); }
.btn .ar { font-family: var(--font-mono); transition: transform .3s var(--ease); }
.btn:hover .ar { transform: translateX(4px); }
.btn:hover { --bg: var(--signal); --fg: var(--ink); border-color: var(--signal); }
.btn--signal { --bg: var(--signal); --fg: var(--ink); }
.btn--signal:hover { --bg: var(--ink); --fg: var(--paper); border-color: var(--ink); }
.btn--line { --bg: transparent; --fg: var(--ink); border-color: var(--ink); }
.on-night .btn--line { --fg: var(--night-text); border-color: var(--night-text); }
.on-night .btn--line:hover { --fg: var(--ink); }

.tlink {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase;
  padding-bottom: 5px; border-bottom: 1px solid currentColor;
  transition: gap .3s var(--ease), color .2s;
}
.tlink:hover { gap: 16px; }

.chip {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: .7rem; letter-spacing: .08em; line-height: 1;
  padding: 6px 9px; border: 1px solid currentColor; white-space: nowrap;
}
.chip--live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--live); box-shadow: 0 0 0 0 rgba(47,169,104,.5); animation: pulse 2.4s infinite; }
.chip--done::before { content: ""; width: 6px; height: 6px; background: currentColor; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(47,169,104,.45); } 70% { box-shadow: 0 0 0 7px rgba(47,169,104,0); } 100% { box-shadow: 0 0 0 0 rgba(47,169,104,0); } }

.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tags li { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .03em; padding: 5px 9px; background: var(--paper-2); color: var(--ink-2); line-height: 1.2; }
.on-night .tags li { background: var(--night-2); color: var(--night-text); }

/* ---------- header ---------- */
.site-head {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--head-h);
  color: var(--ink);
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  border-bottom: 1px solid var(--line);
  transition: background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease), transform .35s var(--ease);
}
.site-head .wrap { height: 100%; display: flex; align-items: center; gap: clamp(14px, 2.4vw, 36px); }
.brand { display: inline-flex; align-items: center; gap: 12px; margin-right: auto; }
.brand-ic { height: 26px; width: auto; }
.brand-wm { height: 13px; width: auto; }
.site-head.is-clear { background: transparent; border-color: transparent; color: #fff; }
.site-head.is-clear .brand img { filter: invert(1); }
.site-head.is-hidden { transform: translateY(-100%); }

.gnav { display: flex; align-items: center; gap: clamp(16px, 2.2vw, 34px); }
.gnav a {
  position: relative;
  font-family: var(--font-latin); font-weight: 500; font-size: .92rem; letter-spacing: .01em;
  padding: 6px 0;
}
.gnav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .35s var(--ease); }
.gnav a:hover::after, .gnav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }

.head-tools { display: flex; align-items: center; gap: 14px; }
.ig-btn { display: inline-grid; place-items: center; width: 36px; height: 36px; border: 1px solid currentColor; border-radius: 50%; transition: background .25s, color .25s, border-color .25s; }
.ig-btn svg { width: 17px; height: 17px; }
.ig-btn:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.site-head.is-clear .ig-btn:hover { background: #fff; color: var(--ink); border-color: #fff; }
.lang { display: inline-flex; align-items: center; font-family: var(--font-mono); font-size: .74rem; letter-spacing: .06em; }
.lang button { padding: 6px 4px; opacity: .45; transition: opacity .2s; }
.lang button.active { opacity: 1; text-decoration: underline; text-underline-offset: 4px; }
.lang .sl { opacity: .35; padding-inline: 2px; }
.head-join { min-height: 38px; padding: 0 14px 0 16px; font-size: .84rem; gap: 10px; }
.site-head.is-clear .head-join { --bg: #fff; --fg: var(--ink); border-color: #fff; }
.site-head.is-clear .head-join:hover { --bg: var(--signal); border-color: var(--signal); }

.burger { display: none; width: 40px; height: 40px; position: relative; }
.burger span { position: absolute; left: 9px; right: 9px; height: 1.5px; background: currentColor; transition: transform .35s var(--ease), top .35s var(--ease); }
.burger span:nth-child(1) { top: 16px; }
.burger span:nth-child(2) { top: 23px; }
.menu-open .burger span:nth-child(1) { top: 19.5px; transform: rotate(45deg); }
.menu-open .burger span:nth-child(2) { top: 19.5px; transform: rotate(-45deg); }

.drawer {
  position: fixed; inset: 0; z-index: 99;
  background: var(--night); color: var(--night-text);
  padding: calc(var(--head-h) + 28px) var(--gutter) 32px;
  display: flex; flex-direction: column; gap: 28px;
  opacity: 0; visibility: hidden; transition: opacity .35s var(--ease), visibility .35s;
  overflow-y: auto;
}
.menu-open .drawer { opacity: 1; visibility: visible; }
.menu-open .site-head { background: var(--night); color: var(--night-text); border-color: var(--night-line); }
.menu-open .site-head .brand img { filter: invert(1); }
.drawer nav a { display: flex; align-items: baseline; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--night-line); font-family: var(--font-latin); font-size: 1.75rem; font-weight: 500; letter-spacing: -.01em; }
.drawer nav a small { font-family: var(--font-jp); font-size: .8rem; color: var(--night-mute); letter-spacing: .04em; }
.drawer .drawer-foot { margin-top: auto; display: grid; gap: 14px; }
.drawer .ig-row { display: flex; gap: 10px; flex-wrap: wrap; }
.drawer .ig-row a { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: .8rem; padding: 10px 12px; border: 1px solid var(--night-line); }
.drawer .ig-row svg { width: 15px; height: 15px; }
body.menu-open { overflow: hidden; }

/* ---------- sections ---------- */
main { display: block; }
.page { padding-top: var(--head-h); }
.sec { padding-block: var(--sec); }
.sec--tight { padding-block: clamp(56px, 7vw, 104px); }
.sec + .sec { border-top: 1px solid var(--line); }
.on-night { background: var(--night); color: var(--night-text); }
.on-night + .sec, .sec + .on-night { border-top: 0; }
.on-paper2 { background: var(--paper-2); }

.sec-head { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 18px; margin-bottom: clamp(36px, 5vw, 72px); align-items: end; }
.sec-head .label { grid-column: 1 / span 3; align-self: start; padding-top: .7em; }
.sec-head .sec-title { grid-column: 4 / span 9; }
.sec-head .sec-side { grid-column: 4 / span 6; }
.sec-head .sec-more { grid-column: 10 / span 3; justify-self: end; align-self: end; }
.sec-head.is-split .sec-title { grid-column: 4 / span 5; }
.sec-head.is-split .sec-side { grid-column: 9 / span 4; }

/* ---------- page head (下層ページ) ---------- */
.phead { padding-top: calc(var(--head-h) + clamp(48px, 8vw, 120px)); padding-bottom: clamp(44px, 6vw, 88px); border-bottom: 1px solid var(--line); }
.phead-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 28px; }
.phead .label { grid-column: 1 / span 3; padding-top: 1.1em; }
.phead .h1 { grid-column: 4 / span 9; }
.phead .lead { grid-column: 4 / span 7; }
.phead .phead-meta { grid-column: 4 / span 9; display: flex; flex-wrap: wrap; gap: 10px 28px; }
.crumb { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em; color: var(--ink-3); display: flex; gap: 10px; }
.crumb a:hover { color: var(--ink); }

/* ---------- media ---------- */
.media { position: relative; overflow: hidden; background: var(--paper-3); }
.media > img, .media > video { width: 100%; height: 100%; object-fit: cover; }
.on-night .media { background: var(--night-2); }
.cap { display: flex; justify-content: space-between; gap: 16px; margin-top: 10px; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .06em; color: var(--ink-3); line-height: 1.5; }
.on-night .cap { color: var(--night-mute); }
.r-16x10 { aspect-ratio: 16 / 10; }
.r-3x2 { aspect-ratio: 3 / 2; }
.r-4x3 { aspect-ratio: 4 / 3; }
.r-3x4 { aspect-ratio: 3 / 4; }
.r-4x5 { aspect-ratio: 4 / 5; }
.r-1x1 { aspect-ratio: 1; }
.r-16x9 { aspect-ratio: 16 / 9; }
.r-9x16 { aspect-ratio: 9 / 16; }

/* ---------- reveal ---------- */
.rv { opacity: 0; transform: translateY(18px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: calc(var(--d, 0) * 90ms); }
.rv.in { opacity: 1; transform: none; }
.no-js .rv { opacity: 1; transform: none; }

/* ============================================================
   HOME
   ============================================================ */

/* hero */
.hero { position: relative; height: 100svh; min-height: 560px; max-height: 1100px; color: #fff; overflow: hidden; background: var(--night); }
.hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,.45) 0%, rgba(0,0,0,0) 20%, rgba(0,0,0,.1) 46%, rgba(0,0,0,.74) 100%), linear-gradient(90deg, rgba(0,0,0,.35) 0%, rgba(0,0,0,0) 60%); pointer-events: none; }
.hero .hero-copy { text-shadow: 0 2px 28px rgba(0,0,0,.25); }
.hero-inner { position: relative; z-index: 2; height: 100%; display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); align-content: end; padding-bottom: clamp(28px, 5vh, 56px); }
.hero-copy { grid-column: 1 / span 9; }
.hero-copy .h-hero { color: #fff; }
.hero-sub { display: flex; align-items: center; gap: 14px; margin-top: clamp(16px, 2.6vh, 28px); font-family: var(--font-mono); font-size: clamp(.78rem, 1vw, .9rem); letter-spacing: .08em; }
.hero-sub::before { content: ""; width: 34px; height: 1px; background: currentColor; }
.hero--center::after { background: linear-gradient(180deg, rgba(0,0,0,.45) 0%, rgba(0,0,0,0) 22%), radial-gradient(ellipse 75% 60% at 50% 50%, rgba(0,0,0,.44) 0%, rgba(0,0,0,.2) 62%, rgba(0,0,0,.34) 100%); }
.hero--center .hero-inner { align-content: center; justify-items: center; text-align: center; padding-bottom: 0; }
.hero--center .hero-copy { grid-column: 1 / -1; }
.hero--center .hero-sub { justify-content: center; }
.hero--center .hero-sub::after { content: ""; width: 34px; height: 1px; background: currentColor; }
/* 見出し →（約 3 秒後）ロゴ。同じ位置に重ね、見出しが上へ消えるのと入れ替わりにロゴが浮かぶ */
.hero-swap { display: grid; place-items: center; }
.hero-swap > * { grid-area: 1 / 1; }
.hero-title { animation: hero-title 3.6s var(--ease) .2s both; }
/* iPhone では大きな画像に filter をかけると白い四角になることがあるため、ロゴには filter を使わない */
.hero-logo { width: clamp(220px, 30vw, 440px); height: auto; opacity: 0; animation: hero-logo 1.4s var(--ease) 3.3s both; }
.hero--center .hero-sub { opacity: 0; animation: hero-fade 1s var(--ease) .9s both; }
@keyframes hero-title {
  0% { opacity: 0; transform: translateY(16px); }
  20% { opacity: 1; transform: none; }
  80% { opacity: 1; transform: none; }
  100% { opacity: 0; transform: translateY(-18px); visibility: hidden; }
}
@keyframes hero-logo {
  from { opacity: 0; transform: translateY(12px) scale(.96); }
  to { opacity: 1; transform: none; }
}
@keyframes hero-fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .hero-swap { gap: 28px; }
  .hero-swap > * { grid-area: auto; }
  .hero-title, .hero-logo, .hero--center .hero-sub { animation: none; opacity: 1; }
}
.hero-scroll { position: absolute; left: 50%; bottom: 18px; z-index: 2; width: 1px; height: 44px; background: rgba(255,255,255,.35); overflow: hidden; }
.hero-scroll::after { content: ""; position: absolute; left: 0; top: -40%; width: 1px; height: 40%; background: #fff; animation: drip 2.2s var(--ease) infinite; }
@keyframes drip { to { top: 100%; } }



/* instagram（ひとつの枠：左に投稿リスト、右に選んだ投稿。Instagram の embed.js が高さを合わせる） */
.ig-box { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); align-items: stretch; border: 1px solid var(--ink); background: var(--paper); overflow: hidden; }
.ig-follow-sp { display: none; }
.ig-side { display: flex; flex-direction: column; gap: 20px; padding: clamp(24px, 3vw, 48px); border-right: 1px solid var(--ink); }
.ig-lead { font-size: var(--t-small); color: var(--ink-2); line-height: 1.85; }
.ig-list { border-top: 1px solid var(--ink); margin-top: 4px; }
.ig-item { position: relative; width: 100%; display: grid; gap: 6px; text-align: left; padding: 16px 0 16px 18px; border-bottom: 1px solid var(--line); transition: background .25s; }
.ig-item::before { content: ""; position: absolute; left: 0; top: 16px; bottom: 16px; width: 3px; background: transparent; transition: background .25s; }
.ig-item:hover { background: var(--paper-2); }
.ig-item.is-active::before { background: var(--signal); }
.ig-item .ig-meta { display: flex; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: .7rem; color: var(--ink-3); }
.ig-item .ig-meta .chip { padding: 4px 7px; font-size: .64rem; }
.ig-item strong { font-family: var(--font-latin); font-size: 1.15rem; font-weight: 500; letter-spacing: -.01em; }
.ig-item .ig-desc { font-size: .84rem; color: var(--ink-2); line-height: 1.7; }
.ig-item:not(.is-active) strong, .ig-item:not(.is-active) .ig-desc { opacity: .55; }
.ig-side .btn { align-self: flex-start; margin-top: auto; }
.ig-stage { display: grid; place-items: start center; background: var(--paper-2); padding: clamp(20px, 3vw, 44px); container-type: inline-size; }
.ig-post { width: min(100%, 470px); }
.ig-post:not(.is-active) { display: none; }
/* 読み込み中も投稿の実寸（幅 × 1.25 の画像 + 上下の帯）に近い高さを確保し、伸びすぎた分は見せない */
.ig-post.is-active { min-height: calc(min(100cqw, 470px) * 1.25 + 190px); max-height: calc(min(100cqw, 470px) * 1.25 + 240px); overflow: hidden; }
/* iPhone は iframe を中身の幅まで広げることがあるので、width: 1px + min-width: 100% で枠の幅に固定する */
.ig-post iframe.instagram-media { width: 1px !important; min-width: 100% !important; }
.ig-post .instagram-media { margin: 0 !important; min-width: 0 !important; max-width: none !important; width: 100% !important; border-radius: 0 !important; border: 1px solid var(--line) !important; box-shadow: none !important; }
.ig-post blockquote.instagram-media { display: grid; place-items: center; min-height: 420px; background: #fff; font-size: var(--t-small); }

/* go2 section */
.go2 { position: relative; overflow: hidden; }
.go2-stage { position: relative; aspect-ratio: 5 / 4; }
.go2-canvas-wrap { position: absolute; inset: 0; cursor: pointer; outline: none; }
.go2-canvas-wrap:focus-visible { outline: 2px solid var(--ink); outline-offset: -2px; }
.go2-stage .go2-loading { position: absolute; inset: 0; display: grid; place-items: center; font-family: var(--font-mono); font-size: .75rem; letter-spacing: .1em; color: var(--ink-3); transition: opacity .4s; }
.go2-canvas-wrap.is-ready + .go2-loading { opacity: 0; pointer-events: none; }
.go2-failed .go2-loading { font-size: 0; }
.go2-failed .go2-loading::after { content: "3D VIEW UNAVAILABLE"; font-size: .75rem; }
.go2-grid-bg { position: absolute; inset: 0; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 48px 48px; background-position: center; opacity: .5; -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 60%, #000 30%, transparent 75%); mask-image: radial-gradient(ellipse 70% 60% at 50% 60%, #000 30%, transparent 75%); pointer-events: none; }
.go2-hint { position: absolute; left: 0; bottom: 0; display: flex; gap: 18px; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .06em; color: var(--ink-3); pointer-events: none; }
.go2-hint span::before { content: "→ "; color: var(--ink); }
.plat-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(28px, 3.4vw, 56px); align-items: start; }
.plat { display: grid; gap: 18px; align-content: start; }
.plat-body { display: grid; gap: 16px; align-content: start; }
.plat-body p { color: var(--ink-2); font-size: var(--t-small); line-height: 1.85; }
.plat-title { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; border-top: 1px solid var(--ink); padding-top: 14px; }
.plat-title h3 { font-family: var(--font-latin); font-size: clamp(1.35rem, 2.1vw, 1.85rem); font-weight: 500; letter-spacing: -.02em; line-height: 1.1; }
.plat-title .mono { font-size: .72rem; letter-spacing: .04em; color: var(--ink-3); white-space: nowrap; }
.plat-credit { margin-top: clamp(28px, 3.4vw, 48px); max-width: 60em; }
.spec { border-top: 1px solid var(--ink); }
.spec div { display: grid; grid-template-columns: 7.5em 1fr; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--line); font-size: var(--t-small); line-height: 1.6; }
.spec dt { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .06em; color: var(--ink-3); padding-top: .15em; }
.spec dd { color: var(--ink); }
.hint-touch { display: none; }
@media (hover: none) { .hint-mouse { display: none; } .hint-touch { display: inline; } }
.go2-credit { font-size: .68rem; color: var(--ink-3); line-height: 1.6; }
.go2-credit a { text-decoration: underline; text-underline-offset: 2px; }

/* home: projects */

/* home: mission */
.mission { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 36px; }
.mission .label { grid-column: 1 / span 3; padding-top: .7em; }
.mission-quote { grid-column: 4 / span 9; font-size: clamp(1.8rem, 3.7vw, 3.3rem); }
.mission-body { grid-column: 4 / span 5; display: grid; gap: 26px; align-content: start; }
.mission-media { grid-column: 9 / span 4; }
.mstats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--ink); }
.mstats div { padding: 12px 16px 0 0; display: grid; gap: 4px; align-content: start; }
.mstats div + div { padding-left: 16px; border-left: 1px solid var(--line); }
.mstats dt { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }
.mstats dd { font-family: var(--font-latin); font-size: clamp(2rem, 3.4vw, 3rem); font-weight: 500; letter-spacing: -.03em; line-height: 1.05; }
.mission-links { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 28px; }

/* home: team numbers */
.nums { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--ink); }
.num { padding: 22px clamp(14px, 2vw, 28px) 26px 0; border-right: 1px solid var(--line); display: grid; gap: 10px; align-content: start; }
.num + .num { padding-left: clamp(14px, 2vw, 28px); }
.num:last-child { border-right: 0; }
.num .num-v { font-family: var(--font-latin); font-size: clamp(2.6rem, 5.4vw, 5rem); font-weight: 500; letter-spacing: -.03em; line-height: 1; }
.num .num-v small { font-size: .32em; letter-spacing: 0; margin-left: .3em; font-family: var(--font-jp); font-weight: 500; }
.num p { font-size: var(--t-small); color: var(--ink-2); line-height: 1.75; }
.num .num-k { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }

/* news list */
.nlist { border-top: 1px solid var(--ink); }
.nrow a { display: grid; grid-template-columns: 8.5em 7em minmax(0, 1fr) 2em; gap: 18px; align-items: baseline; padding: 20px 0; border-bottom: 1px solid var(--line); transition: padding .35s var(--ease), background .35s; }
.nrow a:hover { padding-inline: 14px; background: var(--paper-2); }
.nrow .n-date { font-family: var(--font-mono); font-size: .8rem; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.nrow .n-cat { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; }
.nrow .n-title { font-weight: 500; overflow-wrap: anywhere; }
.nrow .n-ar { font-family: var(--font-mono); justify-self: end; transition: transform .3s var(--ease); }
.nrow a:hover .n-ar { transform: translateX(4px); }
.nlist-empty { padding: 22px 0; color: var(--ink-3); border-bottom: 1px solid var(--line); font-size: var(--t-small); }

/* join (signal block) */
.join { background: var(--signal); color: var(--ink); }
.join-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 34px; align-items: end; }
.join .label { color: var(--ink); grid-column: 1 / -1; }
.join-title { grid-column: 1 / span 8; font-size: clamp(2.2rem, 5.6vw, 5.4rem); font-weight: 500; line-height: 1.12; letter-spacing: -.02em; }
html[lang="en"] .join-title { font-family: var(--font-latin); line-height: 1.02; }
.join-side { grid-column: 9 / span 4; display: grid; gap: 22px; }
.join-side p { color: var(--ink); font-size: var(--t-small); line-height: 1.85; }
.join-btns { display: flex; flex-wrap: wrap; gap: 10px; }
.join .btn:hover { --bg: #fff; --fg: var(--ink); border-color: #fff; }
.join .btn--line { border-color: var(--ink); }
.join .btn--line:hover { --bg: var(--ink); --fg: var(--signal); border-color: var(--ink); }

/* ---------- footer ---------- */
.site-foot { background: var(--night); color: var(--night-text); padding-top: clamp(64px, 8vw, 120px); padding-bottom: 28px; }
.foot-top { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 48px; padding-bottom: clamp(48px, 6vw, 88px); border-bottom: 1px solid var(--night-line); }
.foot-statement { grid-column: 1 / span 7; font-family: var(--font-latin); font-size: clamp(2.2rem, 5.2vw, 4.8rem); font-weight: 500; line-height: 1.02; letter-spacing: -.03em; }
.foot-statement span { display: block; font-family: var(--font-jp); font-size: clamp(.95rem, 1.2vw, 1.1rem); letter-spacing: .04em; font-weight: 500; margin-top: 22px; color: var(--night-mute); }
.foot-cols { grid-column: 8 / span 5; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.foot-cols h4 { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--night-mute); font-weight: 500; margin-bottom: 16px; }
.foot-cols li + li { margin-top: 8px; }
.foot-cols a { font-size: .92rem; transition: color .2s; }
.foot-cols a:hover { color: var(--signal); }
.foot-ig { display: inline-flex; align-items: center; gap: 8px; }
.foot-ig svg { width: 15px; height: 15px; flex: none; }
.foot-mid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 20px; padding-block: 28px; font-size: .82rem; color: var(--night-mute); line-height: 1.8; }
.foot-mid .foot-brand { grid-column: 1 / span 4; display: flex; align-items: center; gap: 12px; color: var(--night-text); }
.foot-mid .foot-brand img { height: 28px; width: auto; filter: invert(1); }
.foot-mid .foot-brand img + img { height: 13px; }
.foot-mid address { grid-column: 5 / span 4; font-style: normal; }
.foot-mid .foot-mail { grid-column: 9 / span 4; justify-self: end; text-align: right; }
.foot-mid .foot-mail a { color: var(--night-text); border-bottom: 1px solid var(--night-line); }
.foot-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 24px; padding-top: 22px; border-top: 1px solid var(--night-line); font-family: var(--font-mono); font-size: .68rem; letter-spacing: .04em; color: var(--night-mute); line-height: 1.7; }
.foot-bottom a { text-decoration: underline; text-underline-offset: 2px; }

/* ============================================================
   ABOUT
   ============================================================ */
.compare { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--ink); }
.compare-col { padding: 26px clamp(16px, 2.4vw, 36px) 30px 0; display: grid; gap: 18px; align-content: start; }
.compare-col + .compare-col { padding-left: clamp(16px, 2.4vw, 36px); padding-right: 0; border-left: 1px solid var(--line); }
.compare-col.is-kr { background: linear-gradient(var(--ink), var(--ink)) top / 100% 3px no-repeat; }
.compare-col h3 { font-family: var(--font-latin); font-size: var(--t-h3); font-weight: 500; }
.compare-col li { padding: 12px 0; border-bottom: 1px solid var(--line); line-height: 1.75; }
.compare-col.is-other li { color: var(--ink-3); }

.flow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--ink); counter-reset: step; }
.flow-step { position: relative; padding: 26px clamp(16px, 2.2vw, 32px) 30px 0; display: grid; gap: 12px; align-content: start; }
.flow-step + .flow-step { padding-left: clamp(16px, 2.2vw, 32px); border-left: 1px solid var(--line); }
.flow-step h3 { font-family: var(--font-latin); font-size: clamp(1.6rem, 2.6vw, 2.3rem); font-weight: 500; letter-spacing: -.02em; line-height: 1.1; }
.flow-step p { font-size: var(--t-small); color: var(--ink-2); line-height: 1.8; }
.flow-step:not(:last-child)::after { content: "→"; position: absolute; right: -0.6em; top: 26px; font-family: var(--font-mono); background: var(--paper); padding: 0 6px; z-index: 1; }
.exits { margin-top: clamp(28px, 3.4vw, 48px); display: grid; grid-template-columns: 14em repeat(3, minmax(0, 1fr)); gap: 0; background: var(--paper-2); }
.exits > * { padding: 22px clamp(14px, 1.8vw, 26px); }
.exits .exits-label { display: grid; gap: 8px; align-content: start; border-right: 1px solid var(--line); }
.exits .exits-label strong { font-weight: 500; font-size: 1.05rem; line-height: 1.5; }
.exit { display: grid; gap: 8px; align-content: start; }
.exit + .exit { border-left: 1px solid var(--line); }
.exit h4 { font-family: var(--font-latin); font-weight: 500; font-size: 1.15rem; }
.exit h4 small { font-family: var(--font-jp); font-size: .78rem; color: var(--ink-3); margin-left: 6px; font-weight: 400; }
.exit p { font-size: var(--t-small); color: var(--ink-2); line-height: 1.75; }

.teams { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(14px, 2vw, 28px); }
.team-card { border: 1px solid var(--night-line); padding: clamp(22px, 3vw, 40px); display: grid; gap: 18px; align-content: start; }
.team-card .mono { font-size: .72rem; letter-spacing: .1em; color: var(--signal); text-transform: uppercase; }
.team-card h3 { font-family: var(--font-latin); font-size: clamp(1.6rem, 2.8vw, 2.4rem); font-weight: 500; letter-spacing: -.02em; line-height: 1.05; }
.team-card .team-lead { font-size: 1.05rem; font-weight: 500; }
.team-card ul { border-top: 1px solid var(--night-line); }
.team-card li { padding: 11px 0; border-bottom: 1px solid var(--night-line); font-size: var(--t-small); color: var(--night-text); line-height: 1.7; display: grid; grid-template-columns: 6.4em 1fr; gap: 10px; }
.team-card li b { font-family: var(--font-mono); font-weight: 500; font-size: .7rem; letter-spacing: .08em; color: var(--night-mute); padding-top: .2em; }
.team-card li.plain { display: block; }

.yil { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 36px; }
.yil-text { grid-column: 1 / span 5; display: grid; gap: 22px; align-content: start; }
.yil-photos { grid-column: 7 / span 6; display: grid; grid-template-columns: 1fr 1fr; gap: clamp(10px, 1.2vw, 16px); align-items: start; }
.yil-photos figure:nth-child(2) { margin-top: clamp(40px, 6vw, 96px); }
.floors { border-top: 1px solid var(--ink); }
.floors div { display: grid; grid-template-columns: 3.2em 1fr; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.floors b { font-family: var(--font-latin); font-weight: 500; font-size: 1.4rem; line-height: 1.1; }
.floors p { font-size: var(--t-small); line-height: 1.75; color: var(--ink-2); }
.floors p strong { display: block; color: var(--ink); font-weight: 500; font-size: var(--t-body); }
.yil-feats { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--ink); }
.yil-feats li { padding: 18px clamp(12px, 1.6vw, 22px) 0 0; display: grid; gap: 8px; align-content: start; }
.yil-feats li + li { padding-left: clamp(12px, 1.6vw, 22px); border-left: 1px solid var(--line); }
.yil-feats strong { font-weight: 500; line-height: 1.5; }
.yil-feats p { font-size: var(--t-small); color: var(--ink-2); line-height: 1.75; }
.yil-gear { grid-column: 1 / -1; display: grid; gap: 12px; padding-top: 8px; }
.yil-gear .tags { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.yil-gear .tags li { font-family: var(--font-jp); font-size: clamp(.98rem, 1.25vw, 1.15rem); font-weight: 500; letter-spacing: .02em; line-height: 1.5; padding: clamp(14px, 1.6vw, 20px) clamp(16px, 1.8vw, 24px); color: var(--ink); }
@media (max-width: 1080px) { .yil-gear .tags { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .yil-gear .tags { grid-template-columns: minmax(0, 1fr); gap: 6px; } }


.s2r { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 30px; align-items: start; }
.s2r figure:nth-of-type(1) { grid-column: 1 / span 6; }
.s2r figure:nth-of-type(2) { grid-column: 7 / span 6; }
.s2r .pipeline { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--night-line); }
.pipeline li { padding: 18px 16px 0 0; display: grid; gap: 6px; }
.pipeline li + li { padding-left: 16px; border-left: 1px solid var(--night-line); }
.pipeline strong { font-weight: 500; font-size: 1.05rem; }

.quote { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 28px; }
.quote .label { grid-column: 1 / span 3; padding-top: .7em; }
.quote blockquote { grid-column: 4 / span 8; font-size: clamp(1.15rem, 2vw, 1.6rem); line-height: 1.9; font-weight: 500; text-wrap: pretty; position: relative; }
html[lang="en"] .quote blockquote { line-height: 1.5; font-family: var(--font-latin); }
.quote blockquote::before { content: "“"; position: absolute; left: -.6em; top: -.15em; font-family: var(--font-latin); font-size: 2.4em; line-height: 1; color: var(--signal-2); }
.quote figcaption { grid-column: 4 / span 8; display: flex; align-items: center; gap: 16px; }
.quote figcaption img { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; object-position: 50% 30%; }
.quote figcaption div { display: grid; gap: 2px; line-height: 1.5; }
.quote figcaption b { font-weight: 500; }
.quote figcaption span { font-size: .8rem; color: var(--ink-3); }

/* ============================================================
   MEMBERS
   ============================================================ */
.mem-intro { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 36px; }
.mem-intro figure { grid-column: 1 / span 7; }
.mem-intro .nums { grid-column: 8 / span 5; grid-template-columns: 1fr; border-top: 0; }
.mem-intro .num { border-right: 0; border-top: 1px solid var(--ink); padding: 18px 0 22px; }
.mem-intro .num + .num { padding-left: 0; border-top-color: var(--line); }
.mem-intro .num .num-v { font-size: clamp(1.6rem, 2.6vw, 2.3rem); letter-spacing: -.01em; line-height: 1.25; font-family: var(--font-jp); }
html[lang="en"] .mem-intro .num .num-v { font-family: var(--font-latin); }

.mem-toolbar { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.mem-count { font-family: var(--font-mono); font-size: .8rem; color: var(--ink-3); }
.mem-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); column-gap: clamp(12px, 1.6vw, 24px); row-gap: clamp(32px, 4vw, 56px); }
.mem { display: grid; gap: 14px; align-content: start; }
.mem-ph { aspect-ratio: 4 / 5; background: var(--paper-2); position: relative; overflow: hidden; }
.mem-ph img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.02); transition: filter .6s var(--ease), transform 1s var(--ease); }
.mem:hover .mem-ph img { filter: none; transform: scale(1.02); }
.mem-ph .mem-initial { position: absolute; inset: 0; display: grid; place-items: center; font-family: var(--font-latin); font-size: clamp(2.6rem, 5vw, 4.4rem); font-weight: 500; letter-spacing: -.04em; color: var(--paper-3); background: var(--paper-2); }
.mem-ph .mem-initial::after { content: ""; position: absolute; left: 12px; bottom: 12px; width: 14px; height: 14px; background: url("../assets/header-icon.png") center / contain no-repeat; opacity: .35; }
.mem-body { display: grid; gap: 6px; border-top: 1px solid var(--ink); padding-top: 12px; }
.mem-top { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.mem-name { font-weight: 500; font-size: 1.08rem; line-height: 1.4; }
.mem-grade { font-family: var(--font-mono); font-size: .72rem; color: var(--ink-3); white-space: nowrap; }
.mem-role { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .04em; color: var(--ink); }
.mem-dept { font-size: .8rem; color: var(--ink-3); line-height: 1.6; }
.mem.is-skel .mem-ph { animation: skel 1.4s ease-in-out infinite alternate; }
.mem.is-skel .mem-body span { display: block; height: .9em; background: var(--paper-2); width: 70%; }
.mem.is-skel .mem-body span + span { width: 45%; }
@keyframes skel { from { opacity: .55; } to { opacity: 1; } }
.mem-open { grid-column: span 1; display: grid; place-content: center; gap: 12px; text-align: center; aspect-ratio: 4 / 5; border: 1px dashed var(--ink-3); padding: 18px; transition: background .25s, border-color .25s; }
.mem-open:hover { background: var(--signal); border-color: var(--signal); border-style: solid; }
.mem-open strong { font-family: var(--font-latin); font-size: 1.6rem; font-weight: 500; letter-spacing: -.02em; }
.mem-open span { font-size: .82rem; color: var(--ink-2); }
.mem-note { margin-top: 22px; font-size: var(--t-small); color: var(--ink-3); }

/* ============================================================
   PROJECTS
   ============================================================ */
.pj-index { grid-column: 4 / span 9; border-top: 1px solid var(--ink); margin-top: 8px; }
.pj-index a { display: grid; grid-template-columns: minmax(0, 1fr) auto 2em; gap: 16px; align-items: center; padding: 16px 0; border-bottom: 1px solid var(--line); transition: padding .35s var(--ease); }
.pj-index a:hover { padding-left: 10px; }
.pj-index .mono { font-size: .78rem; color: var(--ink-3); }
.pj-index strong { font-family: var(--font-latin); font-weight: 500; font-size: clamp(1.15rem, 1.8vw, 1.5rem); letter-spacing: -.01em; }
.pj-index strong small { font-family: var(--font-jp); font-size: .78rem; font-weight: 400; color: var(--ink-3); margin-left: 12px; letter-spacing: 0; }

.pj { padding-block: var(--sec); }
.pj + .pj { border-top: 1px solid var(--line); }
.pj.on-night + .pj, .pj + .pj.on-night { border-top: 0; }
.pj-head { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 16px; margin-bottom: clamp(28px, 4vw, 56px); align-items: end; }
.pj-head .pj-no { grid-column: 1 / span 3; display: grid; gap: 14px; justify-items: start; align-self: start; }
.pj-head .pj-title { grid-column: 4 / span 9; display: grid; gap: 10px; }
.pj-name { font-family: var(--font-latin); font-size: clamp(2.6rem, 6.4vw, 6.2rem); font-weight: 500; letter-spacing: -.035em; line-height: .96; }
.pj-sub { font-size: clamp(1rem, 1.4vw, 1.2rem); font-weight: 500; color: var(--ink-2); }
.on-night .pj-sub { color: var(--night-text); }
.pj-goal { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); margin-bottom: clamp(32px, 4.4vw, 64px); }
.pj-goal .label { grid-column: 1 / span 3; padding-top: .9em; }
.pj-goal p:not(.label) { grid-column: 4 / span 9; font-size: clamp(1.4rem, 2.8vw, 2.5rem); font-weight: 500; line-height: 1.45; letter-spacing: -.01em; text-wrap: balance; }
html[lang="en"] .pj-goal p:not(.label) { font-family: var(--font-latin); line-height: 1.15; }
.pj-media { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(10px, 1.4vw, 20px); row-gap: clamp(10px, 1.4vw, 20px); margin-bottom: clamp(36px, 4.8vw, 72px); align-items: start; }
.pj-media .m-a { grid-column: 1 / span 8; }
.pj-media .m-b { grid-column: 9 / span 4; }
.pj-media .m-c { grid-column: 9 / span 4; }
.pj-media .m-wide { grid-column: 1 / -1; }
.pj-media .m-half { grid-column: span 6; }
.pj-media .m-tall { grid-row: span 2; }
.pj-body { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 44px; }
.pj-body .pj-overview { grid-column: 4 / span 5; display: grid; gap: 18px; align-content: start; }
.pj-body .pj-overview p { color: var(--ink-2); }
.on-night .pj-body .pj-overview p { color: var(--night-text); opacity: .88; }
.pj-body .pj-aside { grid-column: 10 / span 3; display: grid; gap: 26px; align-content: start; }
.pj-body .label-col { grid-column: 1 / span 3; }
.pj-aside h4, .pj-next h4 { font-family: var(--font-mono); font-size: .7rem; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 10px; }
.on-night .pj-aside h4, .on-night .pj-next h4 { color: var(--night-mute); }
.pj-aside .award { font-size: var(--t-small); line-height: 1.7; padding: 12px 14px; background: var(--signal); color: var(--ink); font-weight: 500; }
.pj-next { grid-column: 4 / span 9; display: grid; grid-template-columns: 9em 1fr; gap: 16px; padding-top: 18px; border-top: 1px solid var(--line); }
.on-night .pj-next { border-top-color: var(--night-line); }
.pj-next p { line-height: 1.85; }

/* ============================================================
   NEWS / ARTICLE / CONTACT
   ============================================================ */
.news-feat { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 22px; padding-bottom: clamp(36px, 4vw, 56px); margin-bottom: clamp(20px, 2vw, 28px); border-bottom: 1px solid var(--ink); }
.news-feat .media { grid-column: 1 / span 7; aspect-ratio: 16 / 10; }
.news-feat .media img { object-fit: contain; background: var(--paper-2); }
.news-feat .nf-body { grid-column: 8 / span 5; display: grid; gap: 16px; align-content: start; }
.news-feat.no-image .nf-body { grid-column: 4 / span 9; }
.news-feat .nf-meta { display: flex; gap: 14px; align-items: center; font-family: var(--font-mono); font-size: .78rem; color: var(--ink-3); }
.news-feat h2 { font-size: clamp(1.4rem, 2.4vw, 2.1rem); font-weight: 500; line-height: 1.45; }
.news-feat p { color: var(--ink-2); font-size: var(--t-small); line-height: 1.9; }
.more { display: flex; justify-content: center; margin-top: 36px; }

.article { padding-top: calc(var(--head-h) + clamp(40px, 6vw, 88px)); padding-bottom: var(--sec); }
.article-head { max-width: 860px; margin: 0 auto; display: grid; gap: 18px; padding-bottom: 28px; border-bottom: 1px solid var(--ink); }
.article-head h1 { font-size: clamp(1.6rem, 3.4vw, 2.7rem); font-weight: 500; line-height: 1.4; }
.article-head .nf-meta { display: flex; gap: 14px; font-family: var(--font-mono); font-size: .78rem; color: var(--ink-3); }
.article-cover { max-width: 1100px; margin: clamp(28px, 4vw, 48px) auto 0; }
.article-cover img { width: 100%; height: auto; }
.article-body { max-width: 760px; margin: clamp(32px, 4vw, 56px) auto 0; font-size: 1.04rem; line-height: 2; }
html[lang="en"] .article-body { line-height: 1.75; }
.article-body > * + * { margin-top: 1.2em; }
.article-body h2 { font-size: 1.45rem; font-weight: 500; line-height: 1.5; margin-top: 2em; padding-top: .8em; border-top: 1px solid var(--line); }
.article-body h3 { font-size: 1.18rem; font-weight: 500; margin-top: 1.6em; }
.article-body a { text-decoration: underline; text-underline-offset: 3px; }
.article-body ul, .article-body ol { padding-left: 1.4em; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body img { height: auto; }
.article-body .yt { position: relative; aspect-ratio: 16 / 9; }
.article-foot { max-width: 760px; margin: 56px auto 0; padding-top: 22px; border-top: 1px solid var(--line); }

.contact-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 28px); row-gap: 40px; }
.contact-side { grid-column: 1 / span 3; display: grid; gap: 22px; align-content: start; font-size: var(--t-small); color: var(--ink-2); line-height: 1.8; }
.contact-side a { text-decoration: underline; text-underline-offset: 3px; }
.cform { grid-column: 4 / span 7; display: grid; gap: 28px; }
.field { display: grid; gap: 10px; }
.field > label, .field > legend, .field .flabel { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); padding: 0; }
.field .req { color: var(--ink); margin-left: 6px; }
fieldset.field { border: 0; margin: 0; padding: 0; }
.field input[type="text"], .field input[type="email"], .field textarea {
  width: 100%; font: inherit; color: var(--ink); background: transparent;
  border: 0; border-bottom: 1px solid var(--ink); border-radius: 0; padding: 10px 0 12px; font-size: 1.05rem;
  transition: border-color .2s, background .2s;
}
.field textarea { min-height: 180px; resize: vertical; border: 1px solid var(--ink); padding: 14px; }
.field input:focus, .field textarea:focus { outline: none; background: rgba(242, 221, 39, .16); }
.radios { display: flex; flex-wrap: wrap; gap: 8px; }
.radios label { position: relative; cursor: pointer; }
.radios input { position: absolute; opacity: 0; pointer-events: none; }
.radios span { display: inline-flex; padding: 10px 16px; border: 1px solid var(--ink); font-size: .92rem; transition: background .2s; }
.radios input:checked + span { background: var(--ink); color: var(--paper); }
.radios input:focus-visible + span { outline: 2px solid var(--ink); outline-offset: 2px; }
.form-status { font-size: var(--t-small); min-height: 1.5em; }
.form-status.ok { color: var(--live); }
.form-status.err { color: #c0392b; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1080px) {
  .gnav { display: none; }
  .head-join { display: none; }
  .burger { display: block; }
  .hero-copy { grid-column: 1 / -1; }
  .ig-box { grid-template-columns: minmax(0, 1fr); }
  .ig-side { border-right: 0; border-bottom: 1px solid var(--ink); }
  .ig-side .btn { display: none; }
  .ig-follow-sp { display: flex; justify-content: center; padding: 0 clamp(20px, 3vw, 44px) 32px; background: var(--paper-2); }
  .mission-body { grid-column: 1 / span 7; }
  .mission-media { grid-column: 8 / span 5; }
  .mission-quote { grid-column: 1 / -1; }
  .mission .label { grid-column: 1 / -1; }
  .foot-statement, .foot-cols { grid-column: 1 / -1; }
  .yil-text, .yil-photos { grid-column: 1 / -1; }
  .pj-body .pj-overview { grid-column: 1 / span 7; }
  .pj-body .pj-aside { grid-column: 9 / span 4; }
  .pj-next { grid-column: 1 / -1; }
  .pj-body .label-col { display: none; }
  .mem-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .exits { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .exits .exits-label { grid-column: 1 / -1; border-right: 0; border-bottom: 1px solid var(--line); }
  .exits .exit:first-of-type { border-left: 0; }
}

@media (max-width: 760px) {
  :root { --head-h: 58px; }
  .hero-logo { width: clamp(200px, 62vw, 320px); }
  .head-tools .lang { display: none; }
  .br-pc { display: none; }
  .sec-head, .phead-grid, .hero-inner, .plat-grid, .mission, .join-grid, .foot-top, .foot-mid, .yil, .s2r, .quote, .mem-intro, .pj-head, .pj-goal, .pj-media, .pj-body, .news-feat, .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .sec-head > *, .phead-grid > *, .hero-inner > *, .plat-grid > *, .mission > *, .join-grid > *, .foot-top > *, .foot-mid > *, .yil > *, .s2r > *, .quote > *, .mem-intro > *, .pj-head > *, .pj-goal > *, .pj-media > *, .pj-body > *, .news-feat > *, .contact-grid > * { grid-column: 1 / -1 !important; }
  .sec-head .sec-more { justify-self: start; }
  .sec-head .label, .phead .label, .mission .label, .quote .label, .pj-goal .label { padding-top: 0; }
  .hero { min-height: 520px; }
  .ig-box { margin-inline: calc(var(--gutter) * -1); border-inline: 0; }
  .ig-stage { padding: 16px var(--gutter) 20px; }
  .ig-follow-sp { padding: 0 var(--gutter) 28px; }
  .ig-follow-sp .btn { width: 100%; justify-content: center; }
  .ig-post { width: 100%; min-width: 0; }
  .go2-stage { aspect-ratio: 1 / 1; margin-inline: calc(var(--gutter) * -1); }
  .go2-hint { left: var(--gutter); }
  .nums { grid-template-columns: 1fr; }
  .num, .num + .num { padding: 18px 0 22px; border-right: 0; border-bottom: 1px solid var(--line); }
  .nrow a { grid-template-columns: auto 1fr; gap: 6px 14px; padding: 16px 0; }
  .nrow .n-title { grid-column: 1 / -1; }
  .nrow .n-ar { display: none; }
  .foot-cols { grid-template-columns: 1fr 1fr; }
  .foot-mid .foot-mail { justify-self: start; text-align: left; }
  .compare { grid-template-columns: 1fr; }
  .compare-col, .compare-col + .compare-col { padding: 22px 0 26px; border-left: 0; }
  .compare-col + .compare-col { border-top: 1px solid var(--line); }
  .flow { grid-template-columns: 1fr; }
  .flow-step, .flow-step + .flow-step { padding: 20px 0 24px; border-left: 0; border-bottom: 1px solid var(--line); }
  .flow-step:not(:last-child)::after { content: "↓"; right: 0; top: 20px; }
  .exits { grid-template-columns: 1fr; }
  .exit + .exit { border-left: 0; border-top: 1px solid var(--line); }
  .teams { grid-template-columns: 1fr; }
  .yil-photos figure:nth-child(2) { margin-top: 32px; }
  .yil-feats { grid-template-columns: 1fr 1fr; }
  .yil-feats li:nth-child(3) { padding-left: 0; border-left: 0; }
  .yil-feats li { padding-bottom: 18px; }
  .pipeline { grid-template-columns: 1fr 1fr !important; }
  .pipeline li:nth-child(3) { padding-left: 0; border-left: 0; }
  .pipeline li { padding-bottom: 16px; }
  .quote blockquote::before { position: static; display: block; height: .6em; }
  .mem-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pj-index a { grid-template-columns: minmax(0, 1fr) auto; }
  .pj-index a > :last-child { display: none; }
  .pj-index strong small { display: block; margin-left: 0; margin-top: 2px; }
  .pj-next { grid-template-columns: 1fr; gap: 6px; }
  .pj-media .m-tall { grid-row: auto; }
  .cform { grid-column: 1 / -1; }
}

@media (max-width: 420px) {
  .mem-grid { column-gap: 10px; }
  .mem-name { font-size: .98rem; }
  .ig-btn { width: 34px; height: 34px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rv { opacity: 1; transform: none; transition: none; }
  .hero-scroll::after, .chip--live::before { animation: none; }
}

/* about: workshop — AIC のイベントページへの大きなリンク */
.ws-link { position: relative; isolation: isolate; overflow: hidden; display: grid; gap: clamp(22px, 3vw, 40px); padding: clamp(22px, 3.2vw, 48px); border: 1px solid var(--ink); color: var(--ink); }
.ws-link::before { content: ""; position: absolute; inset: 0; z-index: -1; background: var(--signal); transform: scaleX(0); transform-origin: left; transition: transform .7s var(--ease); }
.ws-link:hover::before, .ws-link:focus-visible::before { transform: scaleX(1); }
.ws-link:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }
.ws-link-meta { display: flex; justify-content: space-between; gap: 16px; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em; color: var(--ink-3); transition: color .4s var(--ease); }
.ws-link:hover .ws-link-meta { color: var(--ink); }
.ws-link-main { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: clamp(16px, 3vw, 48px); }
.ws-link-title { font-size: clamp(2rem, 5.4vw, 5rem); font-weight: 500; line-height: 1.12; letter-spacing: -.02em; }
html[lang="en"] .ws-link-title { font-family: var(--font-latin); line-height: 1.02; }
.ws-link-go { display: grid; place-items: center; width: clamp(56px, 7.4vw, 108px); aspect-ratio: 1; background: var(--ink); color: var(--paper); font-family: var(--font-mono); font-size: clamp(1.3rem, 2.6vw, 2.4rem); overflow: hidden; }
.ws-link-go span { transition: transform .5s var(--ease); }
.ws-link:hover .ws-link-go span { transform: translate(.12em, -.12em); }
.ws-link-sub { padding-top: clamp(16px, 2vw, 24px); border-top: 1px solid var(--line); font-size: var(--t-lead); color: var(--ink-2); transition: border-color .4s var(--ease); }
.ws-link:hover .ws-link-sub { border-color: color-mix(in srgb, var(--ink) 25%, transparent); }
@media (max-width: 760px) {
  /* スマホでは矢印を右上に置き、見出しに横幅を全部使う */
  .ws-link-meta { flex-direction: column; gap: 4px; padding-right: 64px; }
  .ws-link-main { grid-template-columns: minmax(0, 1fr); }
  .ws-link-go { position: absolute; top: clamp(22px, 3.2vw, 48px); right: clamp(22px, 3.2vw, 48px); width: 48px; font-size: 1.2rem; }
}