/* HOUSE 686 — モノトーンのHUD。色はすべてこの変数から使う */
:root {
  --bg: #000;
  --fg: #f4f4f2;
  --fg-2: rgba(244, 244, 242, .72);
  --fg-3: rgba(244, 244, 242, .46);
  --line: rgba(244, 244, 242, .16);
  --line-2: rgba(244, 244, 242, .32);
  --heading-leading: 1.4;
  --gutter: clamp(20px, 3.2vw, 48px);
  --ease: cubic-bezier(.2, .7, .1, 1);
}

html { background: var(--bg); scroll-behavior: auto; overflow-x: clip; }
body { background: var(--bg); color: var(--fg); }
h1, h2, h3, h4, h5, h6 { line-height: var(--heading-leading) !important; }
::selection { background: var(--fg); color: var(--bg); }

.mono, .kicker, .btn, #modes, .hud-tele, .boot-log, .boot-meta, .chapter, #rail, .data dt, .spec dt { font-family: "Geist Mono", ui-monospace, monospace; }

/* ---------- 3D層 ---------- */
#gl { position: fixed; inset: 0; width: 100vw; height: 100vh; height: 100lvh; display: block; z-index: 0; }
#shade {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(90deg, rgba(0,0,0,.88) 0%, rgba(0,0,0,.55) 24%, rgba(0,0,0,0) 46%),
    radial-gradient(120% 90% at 60% 50%, transparent 55%, rgba(0,0,0,.65) 100%);
  transition: opacity .8s var(--ease);
}
body.presenting #shade, body.exploring #shade { opacity: .0; }
body.presenting #shade { opacity: 1; background: linear-gradient(0deg, rgba(0,0,0,.9) 0%, rgba(0,0,0,.35) 30%, transparent 55%); }

/* 部屋名のラベル */
#labels { position: fixed; inset: 0; z-index: 2; pointer-events: none; }
.hs {
  position: absolute; left: 0; top: 0; transform: translate3d(-9999px, 0, 0);
  display: flex; align-items: flex-end; gap: 0; opacity: 0; transition: opacity .6s var(--ease);
  pointer-events: none; white-space: nowrap;
}
.hs.show { opacity: 1; }
.hs.click { pointer-events: auto; cursor: pointer; }
.hs .hs-dot { position: relative; width: 9px; height: 9px; margin: 0 0 -4.5px -4.5px; border: 1px solid var(--fg); border-radius: 50%; flex: none; }
.hs .hs-dot::after { content: ""; position: absolute; inset: 2px; background: var(--fg); border-radius: 50%; }
.hs .hs-dot::before { content: ""; position: absolute; inset: -6px; border: 1px solid var(--line-2); border-radius: 50%; animation: ping 2.4s var(--ease) infinite; }
.hs .hs-lead { width: 34px; height: 1px; background: var(--line-2); transform-origin: left; transform: rotate(-38deg) translate(2px, -1px); margin-bottom: 11px; }
.hs .hs-t { margin: 0 0 22px -4px; padding: 6px 10px 7px; border: 1px solid var(--line); background: rgba(0,0,0,.55); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.hs .hs-t small { display: block; font: 500 10px/1.2 "Geist Mono", monospace; letter-spacing: .14em; color: var(--fg-3); }
.hs .hs-t b { display: block; font: 700 14px/1.35 "Zen Kaku Gothic New", sans-serif; letter-spacing: .04em; margin-top: 3px; }
.hs.click:hover .hs-t, .hs.active .hs-t { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.hs.click:hover .hs-t small, .hs.active .hs-t small { color: rgba(0,0,0,.55); }
.hs.dim .hs-t { padding: 3px 8px 4px; }
.hs.dim .hs-t b { display: none; }
.dimlabel {
  position: absolute; left: 0; top: 0; transform: translate3d(-9999px,0,0); opacity: 0; transition: opacity .6s var(--ease);
  font: 500 11px/1 "Geist Mono", monospace; letter-spacing: .08em; color: var(--fg); background: #000; padding: 3px 6px;
}
.dimlabel.show { opacity: 1; }
@keyframes ping { 0% { transform: scale(.4); opacity: 1; } 80%, 100% { transform: scale(1.6); opacity: 0; } }

/* ---------- ヘッダー ---------- */
#top { pointer-events: none; transition: opacity .6s var(--ease); }
#top > * { pointer-events: auto; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--fg); }
.brand-mark { width: 18px; height: 18px; border: 1px solid var(--fg); position: relative; flex: none; }
.brand-mark::before { content: ""; position: absolute; left: 3px; right: 3px; top: 8px; height: 1px; background: var(--fg); }
.brand-mark::after { content: ""; position: absolute; top: 3px; bottom: 3px; left: 8px; width: 1px; background: var(--fg); }
.brand-name { font: 600 15px/1 "Geist", sans-serif; letter-spacing: .06em; }
.brand-sub { font: 500 12px/1 "Zen Kaku Gothic New", sans-serif; color: var(--fg-3); letter-spacing: .06em; padding-left: 12px; border-left: 1px solid var(--line); }
.chapter { align-items: center; gap: 12px; font-size: 11px; letter-spacing: .18em; color: var(--fg-2); }
.chapter-sep { width: 36px; height: 1px; background: var(--line-2); }

/* ボタン：画面内はすべて同じ細枠のスタイルに揃える */
.btn {
  display: inline-flex; align-items: center; gap: 8px; height: 36px; padding: 0 14px;
  border: 1px solid var(--line-2); background: rgba(0,0,0,.45); color: var(--fg);
  font-size: 12px; letter-spacing: .06em; cursor: pointer; border-radius: 0;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}
.btn span { font-family: "Zen Kaku Gothic New", sans-serif; font-weight: 500; letter-spacing: .08em; }
.btn svg { width: 13px; height: 13px; flex: none; }
.btn:hover, .btn:focus-visible { background: var(--fg); color: var(--bg); border-color: var(--fg); outline: none; }
.btn.icon { width: 40px; padding: 0; justify-content: center; }
.btn kbd { font: 500 10px/1 "Geist Mono", monospace; opacity: .55; letter-spacing: .1em; }
.btn-lg { height: 48px; padding: 0 24px; font-size: 14px; }

/* ---------- 章のレール ---------- */
#rail { position: fixed; right: var(--gutter); top: 50%; transform: translateY(-50%); z-index: 30; display: flex; flex-direction: column; gap: 4px; transition: opacity .6s var(--ease); }
#rail a { display: flex; align-items: center; justify-content: flex-end; gap: 12px; height: 22px; color: var(--fg-3); text-decoration: none; font-size: 10px; letter-spacing: .16em; }
#rail a .rl { opacity: 0; transform: translateX(6px); transition: opacity .35s var(--ease), transform .35s var(--ease); white-space: nowrap; }
#rail a .rt { width: 14px; height: 1px; background: var(--line-2); transition: width .45s var(--ease), background .45s var(--ease); }
#rail a:hover .rl { opacity: 1; transform: none; }
#rail:hover { background: linear-gradient(90deg, transparent, rgba(0,0,0,.6)); }
#rail a.on { color: var(--fg); }
#rail a.on .rt { width: 36px; background: var(--fg); }
#rail a:hover .rt { width: 24px; background: var(--fg-2); }

/* ---------- 左下の計器 ---------- */
#hud {
  position: fixed; left: var(--gutter); bottom: var(--gutter); z-index: 30; width: 208px;
  border: 1px solid var(--line); background: rgba(0,0,0,.5); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.hud-head { display: flex; justify-content: space-between; gap: 8px; padding: 8px 10px; border-bottom: 1px solid var(--line); font: 500 10px/1 "Geist Mono", monospace; letter-spacing: .14em; color: var(--fg-2); }
.hud-head #hud-room { color: var(--fg); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#minimap { display: block; width: 100%; height: 150px; padding: 10px 0 6px; }
#minimap .mm-out { fill: none; stroke: var(--fg-2); stroke-width: .07; }
#minimap .mm-room { fill: rgba(244,244,242,0); stroke: var(--line-2); stroke-width: .03; transition: fill .6s var(--ease); }
#minimap .mm-room.on { fill: rgba(244,244,242,.22); stroke: var(--fg); }
#minimap .mm-deck { fill: none; stroke: var(--line-2); stroke-width: .03; stroke-dasharray: .12 .1; }
#minimap .mm-cam { fill: var(--fg); }
#minimap .mm-ray { stroke: var(--fg); stroke-width: .035; stroke-dasharray: .1 .08; }
#minimap .mm-fov { fill: rgba(244,244,242,.08); stroke: none; }
.hud-tele { margin: 0; padding: 8px 10px 10px; border-top: 1px solid var(--line); display: grid; gap: 5px; font-size: 10px; letter-spacing: .08em; }
.hud-tele div { display: flex; justify-content: space-between; gap: 8px; }
.hud-tele dt { color: var(--fg-3); }
.hud-tele dd { margin: 0; color: var(--fg); font-variant-numeric: tabular-nums; }

/* ---------- 表示モード ---------- */
#modes {
  position: fixed; right: var(--gutter); bottom: var(--gutter); z-index: 30; display: flex;
  border: 1px solid var(--line); background: rgba(0,0,0,.5); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: opacity .6s var(--ease);
}
#modes button { height: 34px; padding: 0 12px; font-size: 10.5px; letter-spacing: .14em; color: var(--fg-3); background: transparent; border: 0; border-left: 1px solid var(--line); cursor: pointer; transition: color .3s, background .3s; }
#modes button:first-child { border-left: 0; }
#modes button:hover { color: var(--fg); }
#modes button.on { background: var(--fg); color: var(--bg); }

/* ---------- 本編 ---------- */
#story { position: relative; z-index: 10; transition: opacity .7s var(--ease); }
.step { position: relative; min-height: 150vh; display: flex; align-items: center; padding: 0 var(--gutter); }
.step .card { position: sticky; top: 50%; transform: translateY(-50%); }
.card {
  width: min(420px, 100%); margin-left: calc(208px + var(--gutter) * .2);
  opacity: 0; filter: blur(6px); translate: 0 24px;
  transition: opacity .9s var(--ease), filter .9s var(--ease), translate .9s var(--ease);
}
.step.in .card { opacity: 1; filter: none; translate: 0 0; }
.card::before, .card::after { content: ""; position: absolute; width: 12px; height: 12px; border-color: var(--fg-2); border-style: solid; }
.card::before { left: -20px; top: -18px; border-width: 1px 0 0 1px; }
.card::after { left: -20px; bottom: -18px; border-width: 0 0 1px 1px; }
.kicker { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; font-size: 11px; letter-spacing: .2em; color: var(--fg-2); margin: 0 0 20px; }
.kdot { width: 3px; height: 3px; background: currentColor; display: inline-block; opacity: .6; }
.card h2 { font: 700 clamp(28px, 2.6vw, 40px)/1.4 "Zen Kaku Gothic New", sans-serif; letter-spacing: .02em; margin: 0 0 22px; text-wrap: balance; }
.card > p { font: 400 15px/2 "Zen Kaku Gothic New", sans-serif; color: var(--fg-2); letter-spacing: .03em; margin: 0; }
.data { margin: 28px 0 0; border-top: 1px solid var(--line); }
.data div { display: grid; grid-template-columns: 8.5em 1fr; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.data dt { font-size: 10.5px; letter-spacing: .12em; color: var(--fg-3); }
.data dd { margin: 0; font: 500 14px/1.6 "Zen Kaku Gothic New", "Geist", sans-serif; color: var(--fg); }

/* ヒーロー */
.step-hero { min-height: 100vh; min-height: 100svh; align-items: flex-end; padding-bottom: clamp(96px, 14vh, 150px); }
.hero { position: relative; margin-left: calc(208px + var(--gutter) * .2); max-width: 760px; }
.hero > * { opacity: 0; translate: 0 18px; transition: opacity 1.2s var(--ease), translate 1.2s var(--ease); }
body.ready .hero > * { opacity: 1; translate: 0 0; }
body.ready .hero > *:nth-child(2) { transition-delay: .12s; }
body.ready .hero > *:nth-child(3) { transition-delay: .26s; }
body.ready .hero > *:nth-child(4) { transition-delay: .4s; }
body.ready .hero > *:nth-child(5) { transition-delay: .5s; }
.hero-title { font: 600 clamp(64px, 9vw, 150px)/.92 "Geist", sans-serif !important; letter-spacing: -.045em; margin: 0 0 28px -.05em; }
.hero-lead { font: 500 clamp(16px, 1.35vw, 20px)/1.9 "Zen Kaku Gothic New", sans-serif; color: var(--fg-2); letter-spacing: .04em; margin: 0 0 36px; }
.hero-lead span { display: inline-block; }
.hero-stats { display: grid; grid-template-columns: repeat(4, auto); justify-content: start; gap: 0; margin: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.hero-stats div { padding: 14px 28px 14px 0; margin-right: 28px; border-right: 1px solid var(--line); }
.hero-stats div:last-child { border-right: 0; margin-right: 0; }
.hero-stats dt { font: 500 11px/1 "Zen Kaku Gothic New", sans-serif; color: var(--fg-3); letter-spacing: .12em; margin-bottom: 10px; }
.hero-stats dd { margin: 0; font: 500 30px/1 "Geist", sans-serif; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.hero-stats small { font-size: 13px; color: var(--fg-2); margin-left: 3px; letter-spacing: 0; }
.hero-note { margin: 12px 0 0; font: 400 11px/1.6 "Zen Kaku Gothic New", sans-serif; color: var(--fg-3); letter-spacing: .06em; }
/* スクロールの誘導（ファーストビュー左上の空き） */
.hero-cue {
  position: absolute; top: clamp(96px, 13vh, 128px); left: calc(var(--gutter) + 208px + var(--gutter) * .2);
  display: flex; flex-direction: column; gap: 22px; color: var(--fg); text-decoration: none;
  opacity: 0; translate: 0 -10px; transition: opacity 1.2s var(--ease) .7s, translate 1.2s var(--ease) .7s;
}
body.ready .hero-cue { opacity: 1; translate: 0 0; }
.cue-head { display: flex; align-items: center; gap: 16px; }
.cue-mouse { position: relative; width: 24px; height: 38px; border: 1px solid var(--fg-2); border-radius: 11px; flex: none; }
.cue-mouse i { position: absolute; left: 50%; top: 7px; width: 2px; height: 7px; margin-left: -1px; background: var(--fg); border-radius: 1px; animation: wheel 2.1s var(--ease) infinite; }
.cue-text { display: flex; flex-direction: column; gap: 7px; }
.cue-text b { font: 500 10.5px/1 "Geist Mono", monospace; letter-spacing: .32em; color: var(--fg-2); }
.cue-text span { font: 700 20px/1.3 "Zen Kaku Gothic New", sans-serif; letter-spacing: .06em; }
.cue-track { position: relative; list-style: none; margin: 0 0 0 10px; padding: 0 0 0 26px; display: grid; gap: 9px; }
.cue-track::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 1px; background: var(--line-2); }
/* 章を上から順に進む光 */
.cue-track::after {
  content: ""; position: absolute; left: -2px; top: 0; width: 5px; height: 5px; border-radius: 50%; background: var(--fg);
  box-shadow: 0 0 10px 2px rgba(244,244,242,.7); animation: run 6s cubic-bezier(.6,0,.3,1) infinite;
}
.cue-track li { display: flex; align-items: baseline; gap: 12px; font: 500 13.5px/1.2 "Zen Kaku Gothic New", sans-serif; letter-spacing: .06em; color: var(--fg-3); animation: lit 6s linear infinite; }
.cue-track li em { font: 500 10px/1 "Geist Mono", monospace; font-style: normal; letter-spacing: .12em; width: 18px; }
.cue-track li:nth-child(2) { animation-delay: .8s; }
.cue-track li:nth-child(3) { animation-delay: 1.6s; }
.cue-track li:nth-child(4) { animation-delay: 2.4s; }
.cue-track li:nth-child(5) { animation-delay: 3.2s; }
.cue-track li:nth-child(6) { animation-delay: 4s; }
.cue-track li.more { color: var(--fg-3); }
.hero-cue:hover .cue-mouse { border-color: var(--fg); }
@keyframes wheel { 0% { transform: translateY(0); opacity: 0; } 20% { opacity: 1; } 70% { transform: translateY(11px); opacity: 0; } 100% { transform: translateY(11px); opacity: 0; } }
@keyframes run { 0% { top: 0; opacity: 0; } 6% { opacity: 1; } 76% { top: calc(100% - 5px); opacity: 1; } 86%, 100% { top: calc(100% - 5px); opacity: 0; } }
@keyframes lit { 0%, 100% { color: var(--fg-3); } 4% { color: var(--fg); } 16% { color: var(--fg-3); } }
@media (max-height: 820px) and (min-width: 768px) { .cue-track { display: none; } }

/* 仕様 */
.card-wide { width: min(560px, 100%); }
.spec { margin: 8px 0 0; border-top: 1px solid var(--line); }
.spec div { display: grid; grid-template-columns: 7.5em 1fr; gap: 16px; padding: 13px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.spec dt { font-size: 11px; letter-spacing: .12em; color: var(--fg-3); font-family: "Zen Kaku Gothic New", sans-serif; font-weight: 500; }
.spec dd { margin: 0; font: 500 15px/1.6 "Zen Kaku Gothic New", "Geist", sans-serif; }
.spec dd small { display: block; font-size: 11px; color: var(--fg-3); letter-spacing: .04em; margin-top: 2px; }

/* 最後 */
.step-end { flex-direction: column; justify-content: center; min-height: 130vh; overflow: clip; }
.card-center { margin: auto; text-align: center; position: relative; top: auto; transform: none; width: min(560px, 100%); }
.card-center > * { position: relative; }
.card-center::before { display: block !important; content: ""; position: absolute; inset: -120px -200px; width: auto; height: auto; border: 0; background: radial-gradient(closest-side, rgba(0,0,0,.85), rgba(0,0,0,.6) 55%, transparent); }
.card-center::after { display: none; }
.card-center .kicker { justify-content: center; }
.end-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 36px; }
.site-foot { width: 100%; max-width: 760px; margin: 0 auto 40px; padding-top: 24px; border-top: 1px solid var(--line); text-align: center; }
.site-foot p { font: 400 11.5px/1.9 "Zen Kaku Gothic New", sans-serif; color: var(--fg-3); margin: 0 0 6px; letter-spacing: .04em; }
.site-foot .mono { font-size: 10px; letter-spacing: .16em; display: flex; justify-content: center; align-items: center; gap: 10px; flex-wrap: wrap; }

/* ---------- 起動画面 ---------- */
#boot { position: fixed; inset: 0; z-index: 100; background: #000; display: grid; place-items: center; transition: opacity 1s var(--ease), visibility 1s; }
#boot.done { opacity: 0; visibility: hidden; }
.boot-inner { width: min(360px, 80vw); }
.boot-brand { font: 600 22px/1 "Geist", sans-serif; letter-spacing: .02em; margin-bottom: 28px; }
.boot-log { list-style: none; margin: 0 0 20px; padding: 0; min-height: 96px; font-size: 11px; line-height: 2; color: var(--fg-3); letter-spacing: .06em; }
.boot-log li { display: flex; justify-content: space-between; gap: 12px; }
.boot-log li b { font-weight: 500; color: var(--fg); }
.boot-bar { height: 1px; background: var(--line); position: relative; overflow: hidden; }
.boot-bar span { position: absolute; inset: 0; background: var(--fg); transform-origin: left; transform: scaleX(0); transition: transform .4s var(--ease); }
.boot-meta { display: flex; justify-content: space-between; margin-top: 10px; font-size: 10px; letter-spacing: .14em; color: var(--fg-3); }
.boot-meta #boot-pct { color: var(--fg); }

/* ---------- 自由に見る ---------- */
body.exploring #story, body.presenting #story { opacity: 0; pointer-events: none; }
html:has(body.exploring), html:has(body.presenting) { overflow: hidden; }
body.exploring #rail, body.presenting #rail, body.presenting #hud, body.presenting #modes { opacity: 0; pointer-events: none; }
body.presenting #top { opacity: 0; pointer-events: none; }
body.presenting #top > * { pointer-events: none; }
#explore-ui { position: fixed; inset: 0; z-index: 35; pointer-events: none; }
#explore-ui[hidden] { display: none; }
.xp-panel {
  position: fixed; right: var(--gutter); top: 84px; width: 300px; pointer-events: auto;
  border: 1px solid var(--line); background: rgba(0,0,0,.55); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.xp-row { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.xp-row:last-child { border-bottom: 0; }
.xp-label { width: 40px; flex: none; font: 500 10px/1 "Geist Mono", monospace; letter-spacing: .16em; color: var(--fg-3); }
.xp-val { width: 44px; text-align: right; font: 500 11px/1 "Geist Mono", monospace; color: var(--fg); flex: none; }
.xp-actions { justify-content: flex-end; gap: 8px; }
.seg { display: flex; flex: 1; border: 1px solid var(--line-2); }
.seg button { flex: 1; height: 30px; font: 500 12px/1 "Zen Kaku Gothic New", sans-serif; letter-spacing: .06em; color: var(--fg-2); background: transparent; border: 0; border-left: 1px solid var(--line); cursor: pointer; transition: background .3s, color .3s; }
.seg button:first-child { border-left: 0; }
.seg button:hover { color: var(--fg); }
.seg button.on { background: var(--fg); color: var(--bg); }
#xp-cut { flex: 1; -webkit-appearance: none; appearance: none; height: 20px; background: transparent; cursor: pointer; }
#xp-cut::-webkit-slider-runnable-track { height: 1px; background: var(--line-2); }
#xp-cut::-moz-range-track { height: 1px; background: var(--line-2); }
#xp-cut::-webkit-slider-thumb { -webkit-appearance: none; width: 12px; height: 12px; margin-top: -6px; background: var(--fg); border: 0; border-radius: 0; transform: rotate(45deg); }
#xp-cut::-moz-range-thumb { width: 10px; height: 10px; background: var(--fg); border: 0; border-radius: 0; transform: rotate(45deg); }
.xp-info {
  position: fixed; left: var(--gutter); top: 84px; width: min(340px, calc(100vw - 2 * var(--gutter))); pointer-events: auto;
  padding: 18px 20px 20px; border: 1px solid var(--line); background: rgba(0,0,0,.6); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.xp-info[hidden] { display: none; }
.xp-info .kicker { margin-bottom: 12px; }
.xp-info h3 { font: 700 20px/1.4 "Zen Kaku Gothic New", sans-serif; margin: 0 0 10px; }
.xp-info p:last-child { font: 400 13px/1.9 "Zen Kaku Gothic New", sans-serif; color: var(--fg-2); margin: 0; }

/* ---------- プレゼン ---------- */
#present { position: fixed; inset: 0; z-index: 50; pointer-events: none; }
#present[hidden] { display: none; }
.pr-top { position: fixed; left: var(--gutter); right: var(--gutter); top: 24px; display: flex; align-items: center; gap: 20px; }
.pr-count { font: 500 11px/1 "Geist Mono", monospace; letter-spacing: .14em; color: var(--fg-3); flex: none; }
.pr-count b { color: var(--fg); font-weight: 500; }
.pr-bars { display: flex; gap: 4px; flex: 1; pointer-events: auto; }
.pr-bars button { flex: 1; height: 14px; padding: 6px 0; background: transparent; border: 0; cursor: pointer; }
.pr-bars button i { display: block; height: 2px; background: var(--line-2); position: relative; overflow: hidden; }
.pr-bars button i::after { content: ""; position: absolute; inset: 0; background: var(--fg); transform-origin: left; transform: scaleX(var(--p, 0)); }
.pr-caption { position: fixed; left: var(--gutter); bottom: calc(var(--gutter) + 8px); width: min(640px, calc(100vw - 2 * var(--gutter))); }
.pr-caption > * { transition: opacity .7s var(--ease), translate .7s var(--ease); }
.pr-caption.swap > * { opacity: 0; translate: 0 12px; }
.pr-caption h2 { font: 700 clamp(30px, 3.6vw, 56px)/1.35 "Zen Kaku Gothic New", sans-serif; margin: 0 0 16px; letter-spacing: .02em; }
.pr-caption #pr-p { font: 400 15px/2 "Zen Kaku Gothic New", sans-serif; color: var(--fg-2); margin: 0; max-width: 560px; }
.pr-caption.is-title #pr-p { max-width: none; }
.pr-caption #pr-p span { display: inline-block; }
.pr-caption.is-title h2 { font: 600 clamp(64px, 10vw, 160px)/.95 "Geist", sans-serif !important; letter-spacing: -.045em; }
.pr-ctrl { position: fixed; right: var(--gutter); bottom: calc(var(--gutter) + 8px); display: flex; gap: 8px; pointer-events: auto; }

/* ---------- スマホ ---------- */
@media (max-width: 767px) {
  #shade { background: linear-gradient(0deg, rgba(0,0,0,.94) 0%, rgba(0,0,0,.7) 34%, rgba(0,0,0,0) 58%); }
  #rail, #hud { display: none; }
  #top { height: 56px; background: linear-gradient(rgba(0,0,0,.7), transparent); }
  #top .btn { width: 38px; height: 38px; padding: 0; justify-content: center; }
  #top .btn span { display: none; }
  #top .btn svg { width: 15px; height: 15px; }
  #modes { left: 16px; right: 16px; bottom: 16px; }
  #modes button { flex: 1; padding: 0; font-size: 10px; letter-spacing: .08em; }
  .step { min-height: 150svh; align-items: flex-start; padding: 44svh 20px 0; }
  .step .card { top: 44svh; transform: none; }
  .card { margin-left: 0; width: 100%; }
  .card::before, .card::after { display: none; }
  .card h2 { font-size: 25px; margin-bottom: 14px; }
  .card > p { font-size: 14px; line-height: 1.9; }
  .kicker { margin-bottom: 14px; font-size: 10px; }
  .data { margin-top: 18px; }
  .data div { grid-template-columns: 7em 1fr; padding: 8px 0; }
  .data dd { font-size: 13px; }
  .step-hero { min-height: 100svh; align-items: flex-end; padding: 0 20px 72px; }
  .hero { margin-left: 0; }
  .hero-title { font-size: clamp(56px, 19vw, 88px) !important; margin-bottom: 18px; }
  .hero-lead { font-size: 15px; margin-bottom: 22px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stats div { padding: 12px 0; margin: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .hero-stats div:nth-child(odd) { border-right: 1px solid var(--line); padding-right: 12px; }
  .hero-stats div:nth-child(even) { padding-left: 14px; }
  .hero-stats div:nth-last-child(-n+2) { border-bottom: 0; }
  .hero-stats dd { font-size: 24px; }
  .hero-cue { top: 68px; left: 20px; gap: 0; }
  .cue-head { gap: 12px; padding: 9px 14px 9px 10px; border: 1px solid var(--line-2); background: rgba(0,0,0,.66); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
  .cue-text { gap: 5px; }
  .cue-track { display: none; }
  .cue-text span { font-size: 14px; }
  .cue-mouse { width: 20px; height: 30px; }
  .step-spec { min-height: auto; padding-top: 40vh; padding-bottom: 20vh; }
  .step-spec .card { position: relative; bottom: auto; }
  .spec div { grid-template-columns: 6em 1fr; gap: 10px; padding: 10px 0; }
  .spec dd { font-size: 13.5px; }
  .step-end { padding-bottom: 80px; }
  .card-center { bottom: auto !important; position: relative; }
  .xp-panel { left: 16px; right: 16px; top: auto; bottom: 64px; width: auto; }
  .xp-info { top: 64px; left: 16px; }
  .pr-top { top: 16px; }
  .pr-caption { bottom: 76px; left: 20px; }
  .pr-caption h2 { font-size: 26px; }
  .pr-caption #pr-p { font-size: 13.5px; line-height: 1.85; }
  .pr-ctrl { left: 20px; right: 20px; bottom: 20px; }
  .pr-ctrl #pr-exit { margin-left: auto; }
  .hs .hs-t b { font-size: 12px; }
  body.exploring #modes { bottom: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .card, .hero > * { transition: none; }
  .cue-mouse i, .cue-track::after, .cue-track li, .hs .hs-dot::before { animation: none; }
}

/* 左下に「制作 株式会社アディザイン」の表記（高さ約28px・下から12px）が入るので、左下と画面下の部品をその上に上げる */
#hud { bottom: max(var(--gutter), 52px); }
.pr-caption { bottom: max(calc(var(--gutter) + 8px), 56px); }
@media (max-width: 767px) {
  #modes, body.exploring #modes { bottom: 52px; }
  .xp-panel { bottom: 100px; }
  .pr-caption { bottom: 112px; }
  .pr-ctrl { bottom: 56px; }
}