/* ---------- tokens ---------- */
:root{
  --paper:#ffffff;
  --ink:#000000;
  --accent:#1d3fbb;      /* buttons, links, the task segment */
  --accent-ink:#ffffff;
  --tint:#e8edfb;        /* quiet panels, minor time segments */
  --tint-2:#c3cff2;      /* set-up segment */
  --rule:#9fadd3;
  --ok:#0b6b36;
  --stop:#a01b1b;
  --focus:#f2a900;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#0e1733; --ink:#ffffff; --accent:#a9bcff; --accent-ink:#0e1733;
    --tint:#1b2753; --tint-2:#2f3f7e; --rule:#4a5a94; --ok:#86e3ad; --stop:#ffa3a3;
  }
}
:root[data-theme="dark"]{
  --paper:#0e1733; --ink:#ffffff; --accent:#a9bcff; --accent-ink:#0e1733;
  --tint:#1b2753; --tint-2:#2f3f7e; --rule:#4a5a94; --ok:#86e3ad; --stop:#ffa3a3;
}

/* ---------- base ---------- */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"BIZ UDPGothic","Hiragino Sans","Yu Gothic","Meiryo",system-ui,sans-serif;
  font-size:17px;line-height:1.85;font-feature-settings:"palt" 0;
}
html[data-lang="ja"] .en, html[data-lang="en"] .ja{display:none !important}
html:not([data-amend="on"]) .amend{display:none !important}
html[data-amend="on"] .pre-amend{display:none !important}
h1,h2,h3{line-height:1.4;margin:0;font-weight:700;word-break:auto-phrase;text-wrap:balance}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.4em}
li{margin:.25em 0}
a{color:var(--accent);text-underline-offset:3px}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.prose{max-width:40em}
.skip{position:absolute;left:-999px}
.skip:focus{left:20px;top:10px;background:var(--paper);padding:6px 10px;z-index:10}

/* ---------- header ---------- */
.site-bar{display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:14px 0;border-bottom:1px solid var(--rule);font-size:15px;line-height:1.5}
.site-name{font-weight:700}
.lang{display:flex;border:1px solid var(--accent);border-radius:4px;overflow:hidden;flex-shrink:0}
.lang button{font:inherit;font-size:14px;border:0;background:transparent;color:var(--accent);
  padding:6px 12px;cursor:pointer}
.lang button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}

/* ---------- hero ---------- */
.hero{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:center;
  padding:56px 20px 48px}
.hero h1{font-size:34px;letter-spacing:.01em;margin-bottom:20px}
html[data-lang="en"] .hero h1{font-size:38px;letter-spacing:0}
.lead{font-size:18px;max-width:34em}
.facts{display:grid;grid-template-columns:auto 1fr;gap:6px 20px;margin:24px 0 28px;font-size:16px;line-height:1.6}
.facts dt{font-weight:700;white-space:nowrap}
.facts dd{margin:0}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);text-decoration:none;
  font-weight:700;padding:12px 22px;border-radius:4px;border:2px solid var(--accent);line-height:1.4}
.btn:hover{filter:brightness(1.12)}
.btn[aria-disabled="true"]{background:transparent;color:var(--ink);border-color:var(--rule);cursor:not-allowed;filter:none}

.montage{margin:0}
.montage svg{width:100%;height:auto;display:block}
.montage .head{fill:none;stroke:var(--ink);stroke-width:2}
.montage .el{fill:var(--accent)}
.montage .lbl{fill:var(--ink);font-size:10px;font-family:inherit}
.montage figcaption{font-size:13px;line-height:1.5;margin-top:6px;text-align:center}
@media (prefers-reduced-motion: no-preference){
  .montage .el{animation:blink 2.4s ease-out 1 both;animation-delay:calc(var(--i) * 90ms)}
  @keyframes blink{0%{opacity:.15}35%{opacity:1}100%{opacity:1}}
}

/* ---------- section scaffolding ---------- */
section.block{padding:48px 0;border-top:1px solid var(--rule)}
section.block > .wrap > h2{font-size:26px;margin-bottom:14px}

/* ---------- studies ---------- */
.legend{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:14px;line-height:1.5;margin:18px 0 8px;padding:0;list-style:none}
.legend li{display:flex;align-items:center;gap:6px;margin:0}
.sw{width:14px;height:14px;border:1px solid var(--rule);display:inline-block}
.seg-intro,.seg-off{background:var(--tint)}
.seg-setup{background:var(--tint-2)}
.seg-prac{background:var(--paper);background-image:repeating-linear-gradient(135deg,var(--tint-2) 0 3px,transparent 3px 7px)}
.seg-task{background:var(--accent);color:var(--accent-ink)}

.study{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:12px 40px;
  padding:32px 0;border-bottom:1px solid var(--rule)}
.study:last-of-type{border-bottom:0}
.study h3{font-size:22px}
.study .official{font-size:14px;line-height:1.6;margin:4px 0 14px}
.study .format{font-weight:700;margin-bottom:6px}
.study-main{min-width:0}
.study-side{display:flex;flex-direction:column;gap:10px;align-items:stretch}
.study-side .btn{text-align:center}
.apply-note{font-size:14px;line-height:1.6}
.apply-note.open{color:var(--ok);font-weight:700}
.apply-note.closed{color:var(--stop);font-weight:700}

.timeline{margin:16px 0 4px}
.timeline .row{display:grid;grid-template-columns:minmax(0,1fr) 84px;align-items:center;gap:12px}
.track{min-width:0}
.bar{display:flex;height:34px;border:1px solid var(--ink)}
.bar span{display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
  border-right:1px solid var(--ink);white-space:nowrap;overflow:hidden;min-width:0}
.bar span:last-child{border-right:0}
.total{font-weight:700;font-size:16px;white-space:nowrap}
.timeline .note{font-size:14px;line-height:1.6;margin:6px 0 0}

.devices{display:flex;flex-wrap:wrap;gap:8px 20px;list-style:none;padding:0;margin:14px 0 6px;font-size:15px;line-height:1.5}
.devices li{display:flex;align-items:center;gap:8px;margin:0}
.devices svg{width:26px;height:26px;flex:none;stroke:var(--ink);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.devices li.no svg{opacity:.45}

details{margin-top:12px;border:1px solid var(--rule);border-radius:4px}
summary{cursor:pointer;padding:10px 14px;font-weight:700;font-size:15px}
details[open] summary{border-bottom:1px solid var(--rule)}
details .inner{padding:14px 16px 4px;font-size:15px;line-height:1.75}
details dl{margin:0 0 10px}
details dt{font-weight:700}
details dd{margin:0 0 10px}

/* ---------- flow / info ---------- */
.steps{counter-reset:s;list-style:none;padding:0;margin:16px 0 0;display:grid;gap:0}
.steps li{counter-increment:s;display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:baseline;
  padding:12px 0;border-top:1px solid var(--rule);margin:0}
.steps li::before{content:counter(s);font-weight:700;font-size:22px;color:var(--accent)}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:28px 48px}
.cols h3{font-size:19px;margin-bottom:8px}

.faq dt{font-weight:700;margin-top:18px}
.faq dd{margin:4px 0 0}

.contact{background:var(--tint);padding:22px 24px;border-radius:4px}
.btn-line{display:inline-block;margin:10px 10px 0 0;padding:9px 16px;border:2px solid var(--accent);border-radius:4px;font-weight:700;text-decoration:none;color:var(--accent);background:var(--paper)}
.btn-line[aria-disabled="true"]{border-color:var(--rule);color:var(--ink);cursor:default}
.wd-steps li{margin:.4em 0}
.contact h3{font-size:18px;margin-bottom:6px}
.contact p{margin:0 0 4px}

footer{padding:28px 0 48px;border-top:1px solid var(--rule);font-size:14px;line-height:1.7}
footer p{margin:0 0 8px;max-width:52em}

/* ---------- responsive ---------- */
@media (max-width:820px){
  .hero{grid-template-columns:1fr;gap:20px;padding-top:32px}
  .montage{max-width:190px}
  .hero h1, html[data-lang="en"] .hero h1{font-size:26px}
  .study{grid-template-columns:1fr}
  .cols{grid-template-columns:1fr}
}
@media (max-width:480px){
  body{font-size:16px}
  .site-bar{flex-wrap:wrap}
  .bar{height:30px}
  .bar span{font-size:11px}
}

/* ---------- theme: clean and welcoming (black text on white, teal accent) ---------- */
:root{
  --paper:#ffffff; --ink:#000000;
  --accent:#0f6a7a; --accent-ink:#ffffff;
  --tint:#eaf5f6; --tint-2:#cde6ea; --rule:#b4d2d7;
  --ok:#0b6b36; --stop:#a01b1b; --focus:#f2a900;
  --shadow:0 1px 2px rgba(0,0,0,.05),0 8px 24px rgba(15,106,122,.10);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#0d1f24; --ink:#ffffff; --accent:#7fd3df; --accent-ink:#0d1f24;
    --tint:#16323a; --tint-2:#24505b; --rule:#3c6973; --ok:#86e3ad; --stop:#ffa3a3;
    --shadow:0 1px 2px rgba(0,0,0,.4);
  }
}
:root[data-theme="dark"]{
  --paper:#0d1f24; --ink:#ffffff; --accent:#7fd3df; --accent-ink:#0d1f24;
  --tint:#16323a; --tint-2:#24505b; --rule:#3c6973; --ok:#86e3ad; --stop:#ffa3a3;
  --shadow:0 1px 2px rgba(0,0,0,.4);
}
h1,h2,h3,.btn,.btn-line,.chips li{font-family:"Zen Maru Gothic","BIZ UDPGothic","Hiragino Maru Gothic ProN","Hiragino Sans",sans-serif}
.btn{border-radius:999px;padding:12px 26px}
.btn-line{border-radius:999px;padding:9px 20px}
.lang{border-radius:999px}
.hero-band{background:linear-gradient(180deg,var(--tint) 0%,var(--paper) 100%)}
.hero{padding-top:48px;padding-bottom:44px}
.chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:4px 0 18px}
.chips li{margin:0;padding:5px 14px;border-radius:999px;background:var(--paper);border:1px solid var(--rule);font-size:14px;font-weight:700;line-height:1.5}
.comfort{background:var(--tint)}
.comfort-grid{list-style:none;padding:0;margin:18px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.comfort-grid li{margin:0;display:grid;grid-template-columns:44px minmax(0,1fr);gap:14px;align-items:start;background:var(--paper);border-radius:14px;padding:16px 18px;box-shadow:var(--shadow);font-size:15px;line-height:1.75}
.comfort-grid li b{display:block;font-size:17px;margin-bottom:2px;font-family:"Zen Maru Gothic","BIZ UDPGothic",sans-serif}
.comfort-grid svg{width:40px;height:40px;stroke:var(--accent);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
section.block{border-top:0}
section.block + section.block{border-top:1px solid var(--rule)}
.comfort + section.block, section.block + .comfort{border-top:0}

/* ---------- multi-page additions ---------- */
[hidden]{display:none !important}
a.site-name{color:var(--ink);text-decoration:none}
.crumb{margin-left:auto;margin-right:14px;font-weight:700;white-space:nowrap;font-size:15px}
.hero-cta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:0}
.hero-cta .btn-line{margin:0}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:20px}
.card{border:1px solid var(--rule);border-radius:14px;padding:18px 20px;display:flex;flex-direction:column;gap:6px;background:var(--paper);box-shadow:var(--shadow);transition:transform .15s ease}
@media (prefers-reduced-motion: no-preference){.card:hover{transform:translateY(-2px)}}
.card h3{font-size:20px}
.card h3 a{color:var(--ink);text-decoration:none}
.card h3 a:hover{text-decoration:underline}
.card-img{margin:0 0 6px}
.card-img img{width:100%;height:auto;max-height:180px;object-fit:contain;display:block}
.card-meta{margin:0;font-size:15px;line-height:1.6}
.total-s{font-weight:700}
.card .apply-note{margin:0}
.card-foot{margin:auto 0 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding-top:8px}
.ap-mini{font-size:13px;border:1px solid var(--ink);border-radius:999px;padding:2px 10px;white-space:nowrap}
.panel-news .wrap{background:var(--paper);border:2px solid var(--accent);border-radius:16px;padding-top:24px;padding-bottom:20px}
.small-links{padding:24px 0 8px}
.small-links p{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center;font-size:14px;margin:0}
.btn-small{display:inline-block;padding:4px 12px;border:1px solid var(--accent);border-radius:4px;text-decoration:none;font-weight:700}

.study-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px 32px;align-items:start;padding-top:28px;padding-bottom:8px}
.study-head h1{font-size:30px;margin-bottom:8px}
.approval{border:2px solid var(--accent);border-radius:14px;background:var(--paper);padding:10px 14px;display:flex;flex-direction:column;gap:2px;font-size:13px;line-height:1.5;min-width:200px}
.approval .ap-l{font-weight:700}
.approval .ap-no{font-size:15px}
.approval .ap-no b{font-size:20px;letter-spacing:.02em}
.study-top{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:16px 40px;padding-top:12px;padding-bottom:40px}
.illus{margin:4px 0 16px}
.illus img{width:100%;max-width:560px;height:auto;display:block}
.apply-box{position:sticky;top:16px;align-self:start;display:flex;flex-direction:column;gap:10px;border:1px solid var(--rule);border-radius:14px;padding:18px;box-shadow:var(--shadow);background:var(--paper)}
.apply-box .btn{text-align:center}
.apply-hint{font-size:14px;line-height:1.6;margin:0}

.ic{max-width:46em;font-size:16px;line-height:1.9}
.ic-meta{display:grid;grid-template-columns:auto 1fr;gap:4px 16px;margin:16px 0;font-size:15px;line-height:1.6}
.ic-meta dt{font-weight:700;white-space:nowrap}
.ic-meta dd{margin:0;min-width:0}
.ic-doc{font-weight:700;margin:16px 0 4px}
.ic-toc{border:1px solid var(--rule);border-radius:4px;padding:10px 16px;margin:12px 0 20px;font-size:15px}
.ic-toc ol{list-style:none;padding:0;margin:0;columns:2;column-gap:24px}
.ic-toc li{margin:2px 0}
.ic-sec{padding:14px 0;border-top:1px solid var(--rule)}
.ic-sec h3{font-size:18px;margin-bottom:8px}
.ic-steps{padding-left:0;list-style:none}

@media (max-width:820px){
  .cards{grid-template-columns:1fr}
  .comfort-grid{grid-template-columns:1fr}
  .study-head{grid-template-columns:1fr}
  .approval{justify-self:start}
  .study-top{grid-template-columns:1fr}
  .apply-box{position:static}
  .ic-toc ol{columns:1}
  .ic-meta{grid-template-columns:1fr}
  .ic-meta dd{margin-bottom:6px}
  .crumb{margin-left:0}
}
@media print{
  header .lang,.apply-box,.small-links,.skip{display:none !important}
}

/* 募集サイトに足す部品（案）：研究室ホームページへ戻る帯、女性チームの案内、実験日カレンダー */
:root{--hex:#1d3fbb;--janken:#0b6b36;--texture:#7a2fa8;--juggling:#a3530a;--pink:#b0144f;--pink-tint:#fde7ef}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){--hex:#a9bcff;--janken:#86e3ad;--texture:#d9a6ff;--juggling:#ffc38a;--pink:#ff9cc2;--pink-tint:#3a1a2a}
}

/* 研究室ホームページへ戻る */
.homebar{font-size:14px;line-height:1.5;padding:8px 0 0}
.homebar a{text-decoration:none;font-weight:700}
.homebar a:hover{text-decoration:underline}

/* 女性チームの安心EEG実験 */
.women-team{display:grid;grid-template-columns:minmax(0,420px) minmax(0,1fr);gap:24px;align-items:center;
  margin:28px 0 0;padding:20px;border-radius:12px;background:var(--pink-tint);border:1px solid var(--pink)}
.women-team img{width:100%;height:auto;border-radius:8px;display:block}
.women-team figcaption b{display:block;font-size:20px;color:var(--pink);margin-bottom:6px}
.women-team figcaption p{margin:0;font-size:16px}
@media (max-width:760px){.women-team{grid-template-columns:1fr}}

/* 実験日カレンダー */
.cal-note{font-size:15px;margin:0 0 12px}
.cal-legend{display:flex;flex-wrap:wrap;gap:8px 16px;list-style:none;padding:0;margin:0 0 14px;font-size:14px}
.cal-legend li{display:flex;align-items:center;gap:6px;margin:0}
.cal-sw{width:14px;height:14px;border-radius:3px;display:inline-block}
.cal-month{font-size:20px;margin:18px 0 8px}
.cal-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));border-top:1px solid var(--rule);border-left:1px solid var(--rule)}
.cal-dow,.cal-day{border-right:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.cal-dow{font-size:13px;font-weight:700;text-align:center;padding:4px 0;background:var(--tint)}
.cal-day{min-height:92px;padding:4px;font-size:13px;line-height:1.35}
.cal-day.out{background:var(--tint);opacity:.55}
.cal-date .md{display:none}
.cal-date .d{font-weight:700}
.cal-s{display:block;margin-top:4px;padding:3px 5px;border-radius:4px;border-left:5px solid currentColor;
  background:var(--paper);text-decoration:none;color:var(--ink);box-shadow:0 0 0 1px var(--rule) inset}
.cal-s:hover{box-shadow:0 0 0 2px var(--accent) inset}
.cal-s .t{font-weight:700}
.s-HEX{border-left-color:var(--hex)} .s-JANKEN{border-left-color:var(--janken)}
.s-TEXTURE{border-left-color:var(--texture)} .s-JUGGLING{border-left-color:var(--juggling)}
.fem{display:inline-block;margin-left:2px;padding:0 5px;border-radius:999px;background:var(--pink);color:var(--paper);font-size:11px;font-weight:700;line-height:1.6;vertical-align:1px}
@media (max-width:760px){
  .cal-grid{display:block;border:0}
  .cal-dow,.cal-day.out,.cal-day.none{display:none}
  .cal-day{border:0;border-bottom:1px solid var(--rule);min-height:0;padding:10px 0;display:grid;grid-template-columns:96px 1fr;gap:8px;font-size:15px}
  .cal-date .d{display:none}
  .cal-date .md{display:inline;font-weight:700}
  .cal-s{margin-top:0;margin-bottom:6px}
}

/* 女性チームの図：ヒーローの脳波の電極配置図の上（2026-10-09） */
.hero-side{display:flex;flex-direction:column;gap:18px;align-items:stretch}
.hero-women{margin:0;background:var(--pink-tint);border:1.5px solid var(--pink);border-radius:14px;padding:10px 10px 12px}
.hero-women img{width:100%;height:auto;border-radius:9px;display:block}
.hero-women figcaption{font-size:14px;line-height:1.6;margin-top:8px}
.hero-women figcaption b{display:block;color:var(--pink);font-size:17px;margin-bottom:2px}
.hero-women .hw-links{display:flex;flex-wrap:wrap;gap:6px 14px;margin-top:6px}
.hero-women .hw-links a{font-weight:700;color:var(--pink)}
@media (max-width:760px){.hero-side{align-items:center}.hero-women{max-width:440px}}
.hero-side .montage{max-width:240px;width:100%;align-self:center}
@media (max-width:760px){.hero-side .montage{max-width:190px}}

/* 2026-10-10：満員御礼・募集終了の印（カレンダー） */
.cal-full{display:inline-block;margin-left:4px;padding:0 5px;border:1px solid #7a1f00;border-radius:4px;background:#fff4dc;color:#7a1f00;font-size:.8em;font-weight:700;line-height:1.5}