/* Hallmark · genre: atmospheric · macrostructure: Feature Stack (index) / Long Document (press, privacy)
 * theme: custom · enrichment: E-custom CSS-3D curved panel (Tier A) + real trailer excerpt · nav: N9 · footer: Ft5
 * design-system: design.md · designed-as-app
 * pre-emit critique: P5 H4 E4 S5 R4 V5
 */

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { overflow-x: clip; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: var(--space-xl); }
body {
  margin: 0;
  background: var(--color-void);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-md);
  line-height: 1.85;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; display: block; }
h1, h2, h3 { font-style: normal; margin: 0; overflow-wrap: anywhere; min-width: 0; word-break: auto-phrase; }
p { margin: 0; text-wrap: pretty; }
:lang(ja) p, :lang(ja) li, :lang(ja) dd, :lang(ja) figcaption { word-break: auto-phrase; }
h1, h2, h3, .end__line { text-wrap: balance; }
a { color: var(--color-accent); text-underline-offset: 0.22em; text-decoration-thickness: 1px; }
a:hover { color: var(--color-accent-hi); text-decoration-color: var(--color-laser); }
:focus-visible { outline: 2px solid var(--color-laser); outline-offset: 3px; border-radius: 4px; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.mono { font-family: var(--font-mono); letter-spacing: 0; }

/* language switch (index): only the active language is rendered */
html.ja [data-l="en"], html.en [data-l="ja"] { display: none !important; }

/* ---------- nav · N9 edge-aligned ---------- */
.nav {
  position: relative; z-index: var(--z-nav);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm);
  padding: var(--space-sm) var(--gutter);
}
.wordmark {
  display: inline-flex; align-items: center; gap: var(--space-2xs);
  color: var(--color-ink); text-decoration: none; white-space: nowrap;
  font-family: var(--font-display); font-weight: 800; font-size: var(--text-lg); letter-spacing: 0.01em;
}
.wordmark img { width: 34px; height: 34px; }
.wordmark:hover { color: var(--color-ink); }
.nav__end { display: flex; align-items: center; gap: var(--space-xs); }
.langsw { display: inline-flex; border: var(--rule-hair) solid var(--color-rule); border-radius: var(--radius-pill); padding: 2px; }
.langsw button {
  font: inherit; font-size: var(--text-xs); line-height: 1; white-space: nowrap;
  min-height: 32px; padding: 0 var(--space-xs); border: 0; border-radius: var(--radius-pill);
  background: transparent; color: var(--color-ink-2); cursor: pointer;
  transition: background-color var(--dur-micro) var(--ease-out), color var(--dur-micro) var(--ease-out);
}
.langsw button[aria-pressed="true"] { background: var(--color-ink); color: var(--color-accent-ink); font-weight: 700; }
.nav__store { display: none !important; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2xs);
  min-height: 52px; padding: 0 var(--space-md);
  border-radius: var(--radius-pill);
  background: var(--color-accent); color: var(--color-accent-ink);
  font-weight: 700; font-size: var(--text-sm); text-decoration: none; white-space: nowrap;
  transition: transform var(--dur-micro) var(--ease-out), background-color var(--dur-micro) var(--ease-out);
}
.btn:hover { background: var(--color-accent-hi); color: var(--color-accent-ink); }
.btn:active { transform: translateY(1px); }
.btn svg { width: 16px; height: 16px; flex: none; }
.btn--ghost { background: transparent; color: var(--color-ink); border: var(--rule-hair) solid var(--color-rule); min-height: 40px; padding: 0 var(--space-sm); font-weight: 400; font-size: var(--text-xs); }
.btn--ghost:hover { background: var(--color-paper-2); color: var(--color-ink); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  display: grid; gap: var(--space-lg);
  padding: var(--space-lg) var(--gutter) var(--space-lg);
  isolation: isolate;
}
.hero::before { /* the horizon under the panel */
  content: ""; position: absolute; z-index: -1; inset: auto 0 0 0; height: 70%;
  background: radial-gradient(ellipse 75% 34% at 62% 62%, var(--color-horizon), var(--color-horizon-0) 70%);
  opacity: 0.85; pointer-events: none;
}
.stage::after { /* horizon line */
  content: ""; position: absolute; z-index: -1; left: -20%; right: -20%; top: 86%; height: 1px;
  background: linear-gradient(90deg, var(--color-void-0), var(--color-rule) 30%, var(--color-rule) 70%, var(--color-void-0));
  pointer-events: none;
}
.hero__text { display: grid; gap: var(--space-md); align-content: start; max-width: 36rem; }
.hero h1 {
  font-family: var(--font-display); font-weight: 800;
  font-size: var(--text-display); line-height: 1.16; letter-spacing: 0.005em;
}
html.en .hero h1 { line-height: 1.08; letter-spacing: -0.005em; }
.hero__sub { color: var(--color-ink-2); font-size: var(--text-md); max-width: 30rem; }
.hero__sub strong { color: var(--color-ink); font-weight: 700; }
.buy { display: grid; gap: var(--space-xs); justify-items: start; margin-top: var(--space-2xs); }
.buy__meta { color: var(--color-ink-2); font-size: var(--text-xs); line-height: 1.6; }
.buy__price { color: var(--color-ink); font-weight: 700; font-variant-numeric: tabular-nums; }

/* curved panel — 14 slices of the key visual on a concave cylinder */
.stage {
  --W: 84cqw; --n: 14; --sw: calc(var(--W) / 14);
  --R: calc(var(--W) / 1.2217);           /* arc 70deg = 1.2217 rad, 5deg per slice */
  container-type: inline-size;
  position: relative; margin: 0;
}
.stage__box { position: relative; width: 100%; aspect-ratio: 16 / 10.4; perspective: 760px; perspective-origin: 50% 42%; }
.stage__rig {
  position: absolute; inset: 0;
  transform-style: preserve-3d;
  transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  transition: transform 700ms var(--ease-out);
  animation: settle 1400ms var(--ease-out) both;
}
@keyframes settle { from { transform: translateZ(-120px) rotateY(-10deg) rotateX(3deg); } }
.screen { position: absolute; left: 0; right: 0; top: 8%; height: calc(var(--W) * 0.5625); transform-style: preserve-3d; }
.screen span {
  position: absolute; top: 0; height: 100%;
  left: calc(50% - var(--sw) / 2);
  width: calc(var(--sw) + 1px);
  background-image: url("./trailer_poster.jpg");
  background-image: image-set(url("./trailer_poster.webp") type("image/webp"), url("./trailer_poster.jpg") type("image/jpeg"));
  background-size: var(--W) 100%;
  background-position: calc(var(--i) * var(--sw) * -1) 0;
  transform: translateZ(var(--R)) rotateY(calc((6.5 - var(--i)) * 5deg)) translateZ(calc(var(--R) * -1));
  backface-visibility: hidden;
}
.screen span:first-child { border-radius: var(--radius-panel) 0 0 var(--radius-panel); }
.screen span:last-child { border-radius: 0 var(--radius-panel) var(--radius-panel) 0; }
.stage figcaption { margin-top: var(--space-2xs); color: var(--color-ink-2); font-size: var(--text-xs); text-align: center; }

/* ---------- walkthrough · Feature Stack ---------- */
.walk { padding: var(--space-xl) var(--gutter) var(--space-2xl); display: grid; gap: var(--space-2xl); }
.walk__intro { max-width: 40rem; display: grid; gap: var(--space-sm); }
.walk__intro h2 { font-family: var(--font-display); font-weight: 800; font-size: var(--text-2xl); line-height: 1.3; }
.walk__intro p { color: var(--color-ink-2); }
.step { display: grid; gap: var(--space-lg); }
.step__text { display: grid; gap: var(--space-sm); align-content: start; max-width: 32rem; }
.step h3 {
  font-family: var(--font-display); font-weight: 800; font-size: var(--text-2xl); line-height: 1.25;
  display: flex; align-items: baseline; gap: var(--space-xs);
}
.step h3::before { /* the pointer dot */
  content: ""; flex: none; width: 0.42em; height: 0.42em; border-radius: 50%;
  background: var(--color-laser); transform: translateY(-0.12em);
}
.step p { color: var(--color-ink-2); }
.step__figs { display: grid; gap: var(--space-lg); min-width: 0; }
.panel { margin: 0; display: grid; gap: var(--space-2xs); min-width: 0; }
.panel picture { display: block; }
.panel img, .panel video {
  width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover;
  border-radius: var(--radius-panel);
  background: var(--color-paper-3);
  outline: var(--rule-hair) solid var(--color-rule); outline-offset: -1px;
}
.panel figcaption { color: var(--color-ink-2); font-size: var(--text-xs); line-height: 1.6; }
.ext {
  display: flex; flex-wrap: wrap; gap: var(--space-2xs) var(--space-xs);
  font-family: var(--font-mono); font-size: clamp(0.95rem, 0.7rem + 1vw, 1.2rem); line-height: 1.2; color: var(--color-ink);
  margin: var(--space-2xs) 0 0; padding: 0; list-style: none;
}
.ext li { white-space: nowrap; }
.ext li::before { content: "."; color: var(--color-laser); }
.credit { color: var(--color-ink-2); font-size: var(--text-xs); line-height: 1.6; }

/* ---------- privacy band ---------- */
.quiet {
  background: var(--color-paper-2);
  padding: var(--space-3xl) var(--gutter);
  display: grid; gap: var(--space-lg);
}
.quiet h2 { font-family: var(--font-display); font-weight: 800; font-size: var(--text-display); line-height: 1.15; max-width: 14em; }
.quiet__body { display: grid; gap: var(--space-md); max-width: 38rem; }
.quiet__body > p { font-size: var(--text-lg); color: var(--color-ink); line-height: 1.8; }
.facts { margin: 0; padding: 0; list-style: none; display: grid; gap: 0; border-top: var(--rule-hair) solid var(--color-rule); }
.facts li { padding: var(--space-xs) 0; border-bottom: var(--rule-hair) solid var(--color-rule); color: var(--color-ink-2); display: flex; gap: var(--space-sm); }
.facts li::before { content: ""; flex: none; width: 6px; height: 6px; margin-top: 0.75em; background: var(--color-accent); }

/* ---------- news ---------- */
.news { padding: var(--space-2xl) var(--gutter); display: grid; gap: var(--space-md); }
.news h2 { font-family: var(--font-display); font-weight: 800; font-size: var(--text-xl); line-height: 1.35; display: grid; gap: var(--space-2xs); }
.news .ver { font-family: var(--font-mono); font-size: var(--text-sm); font-weight: 700; color: var(--color-laser); letter-spacing: 0.02em; }
.news p { color: var(--color-ink-2); max-width: 44rem; }
.news strong { color: var(--color-ink); }

/* ---------- trailer ---------- */
.reel { padding: var(--space-xl) var(--gutter) var(--space-2xl); }
.reel__btn {
  position: relative; display: block; width: 100%; max-width: 72rem; margin: 0 auto;
  padding: 0; border: 0; background: var(--color-paper-3); cursor: pointer; color: var(--color-ink);
  border-radius: var(--radius-panel); overflow: hidden; text-decoration: none;
}
.reel__btn picture { display: block; }
.reel__btn img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; opacity: 0.72; transition: opacity var(--dur-short) var(--ease-out); }
.reel__btn:hover img { opacity: 0.85; }
.reel__label {
  position: absolute; left: var(--space-md); bottom: var(--space-md);
  display: inline-flex; align-items: center; gap: var(--space-xs); white-space: nowrap;
  background: var(--color-void); color: var(--color-ink);
  padding: var(--space-2xs) var(--space-md) var(--space-2xs) var(--space-xs);
  border-radius: var(--radius-pill); font-weight: 700; font-size: var(--text-sm);
}
.reel__label svg { width: 28px; height: 28px; }
.reel__label .mono { font-weight: 400; color: var(--color-ink-2); font-size: var(--text-xs); }
.reel video { width: 100%; max-width: 72rem; margin: 0 auto; aspect-ratio: 16 / 9; border-radius: var(--radius-panel); background: var(--color-void); }

/* ---------- spec ---------- */
.spec { padding: var(--space-2xl) var(--gutter); display: grid; gap: var(--space-lg); }
.spec h2 { font-family: var(--font-display); font-weight: 800; font-size: var(--text-xl); }
.spec dl { margin: 0; display: grid; border-top: var(--rule-hair) solid var(--color-rule); }
.spec .row { display: grid; gap: var(--space-3xs); padding: var(--space-sm) 0; border-bottom: var(--rule-hair) solid var(--color-rule); }
.spec dt { color: var(--color-ink); font-weight: 700; font-size: var(--text-sm); }
.spec dd { margin: 0; color: var(--color-ink-2); min-width: 0; overflow-wrap: anywhere; }

/* ---------- footer · Ft5 statement ---------- */
.end { padding: var(--space-3xl) var(--gutter) var(--space-lg); display: grid; gap: var(--space-xl); position: relative; isolation: isolate; }
.end::before {
  content: ""; position: absolute; z-index: -1; inset: 0;
  background: radial-gradient(ellipse 70% 45% at 30% 100%, var(--color-horizon), var(--color-horizon-0) 70%);
  opacity: 0.55; pointer-events: none;
}
.end__line { font-family: var(--font-display); font-weight: 800; font-size: var(--text-2xl); line-height: 1.35; max-width: 24em; word-break: auto-phrase; }
.end .buy { margin: 0; }
.end__meta {
  display: flex; flex-wrap: wrap; gap: var(--space-xs) var(--space-md); align-items: baseline;
  padding-top: var(--space-sm); border-top: var(--rule-hair) solid var(--color-rule);
  color: var(--color-ink-2); font-size: var(--text-xs);
}
.end__meta nav { display: flex; flex-wrap: wrap; gap: var(--space-2xs) var(--space-md); }
.end__meta a { white-space: nowrap; display: inline-block; padding: var(--space-3xs) 0; }
.end__copy { margin-left: auto; }

/* ---------- document pages (press, privacy) ---------- */
.doc { max-width: calc(44rem + 2 * var(--gutter)); margin: 0 auto; padding: var(--space-lg) var(--gutter) var(--space-3xl); }
.doc h1 { font-family: var(--font-display); font-weight: 800; font-size: var(--text-2xl); line-height: 1.3; margin: 0 0 var(--space-sm); }
.doc h2 { font-size: var(--text-lg); font-weight: 700; line-height: 1.5; margin: var(--space-xl) 0 var(--space-xs); color: var(--color-ink); }
.doc p, .doc li { color: var(--color-ink-2); }
.doc p + p { margin-top: var(--space-sm); }
.doc ul { padding-left: 1.3em; margin: var(--space-xs) 0 var(--space-sm); }
.doc li + li { margin-top: var(--space-2xs); }
.doc li::marker { color: var(--color-accent); }
.doc strong { color: var(--color-ink); }
.doc .meta { color: var(--color-ink-2); font-size: var(--text-sm); margin-bottom: var(--space-lg); }
.doc .lead { color: var(--color-ink); }
.doc footer { color: var(--color-ink-2); font-size: var(--text-xs); margin-top: var(--space-2xl); padding-top: var(--space-sm); border-top: var(--rule-hair) solid var(--color-rule); }
.doc-nav { font-size: var(--text-sm); color: var(--color-ink-2); margin-bottom: var(--space-xl); }
.doc-nav a { display: inline-block; padding: var(--space-3xs) 0; white-space: nowrap; }
hr.lang { border: 0; border-top: var(--rule-hair) solid var(--color-rule); margin: var(--space-3xl) 0; position: relative; overflow: visible; }

/* press */
.press-head { display: grid; gap: var(--space-sm); padding-bottom: var(--space-lg); border-bottom: var(--rule-hair) solid var(--color-rule); }
.press-head h1 { font-size: var(--text-display); line-height: 1.1; margin: 0; }
.press-head .tagline { color: var(--color-ink); font-size: var(--text-lg); line-height: 1.7; }
.kit-sec { padding: var(--space-lg) 0; border-bottom: var(--rule-hair) solid var(--color-rule); }
.kit-sec h2 { margin: 0 0 var(--space-xs); }
.kit-sec .btns { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-top: var(--space-sm); }
.facts-tbl { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
.facts-tbl th, .facts-tbl td { text-align: left; vertical-align: top; padding: var(--space-xs) 0; border-bottom: var(--rule-hair) solid var(--color-rule); }
.facts-tbl tr:last-child th, .facts-tbl tr:last-child td { border-bottom: 0; }
.facts-tbl th { color: var(--color-ink); font-weight: 700; width: 38%; padding-right: var(--space-sm); }
.facts-tbl td { color: var(--color-ink-2); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.hl { list-style: none; padding: 0 !important; display: grid; gap: 0 !important; }
.hl li { padding: var(--space-xs) 0 var(--space-xs) var(--space-md); border-bottom: var(--rule-hair) solid var(--color-rule); position: relative; margin: 0 !important; }
.hl li:last-child { border-bottom: 0; }
.hl li::before { content: ""; position: absolute; left: 0; top: 1.28em; width: 7px; height: 7px; border-radius: 50%; background: var(--color-laser); }

/* ---------- ≥ 40rem ---------- */
@media (min-width: 40rem) {
  html.ja .nav__store[data-l="ja"], html.en .nav__store[data-l="en"], .nav__store:not([data-l]) { display: inline-flex !important; }
  .facts { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: var(--space-lg); }
  .spec .row { grid-template-columns: minmax(0, 12rem) minmax(0, 1fr); gap: var(--space-md); }
}

/* ---------- ≥ 60rem ---------- */
@media (min-width: 60rem) {
  .hero {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: center; gap: var(--space-lg);
    padding-top: var(--space-2xl); padding-bottom: var(--space-xl);
  }
  .hero__text { padding-bottom: var(--space-xl); max-width: none; }
  .hero h1 { font-size: clamp(2.6rem, 1rem + 3.1vw, 4rem); }
  .hero h1 .ln { white-space: nowrap; }
  .walk { gap: var(--space-4xl); padding-top: var(--space-2xl); }
  .step { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: var(--space-2xl); align-items: start; }
  .step h3 { font-size: clamp(2rem, 0.8rem + 1.9vw, 2.75rem); }
  .step__text { position: sticky; top: 22vh; padding-top: var(--space-xl); }
  .step--flip { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
  .step--flip .step__text { order: 2; }
  .step__figs { gap: var(--space-2xl); }
  .step__figs--pair .panel:nth-child(2) { width: 82%; justify-self: end; }
  .quiet { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); align-items: end; padding-block: var(--space-4xl); }
  .news { grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: var(--space-2xl); align-items: start; }
  .spec { grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: var(--space-2xl); align-items: start; }
  .end { padding-top: var(--space-4xl); }
}
@media (min-width: 90rem) {
  .hero, .walk, .quiet, .news, .spec, .end, .reel { padding-left: max(var(--gutter), calc((100% - 84rem) / 2)); }
  .walk, .quiet, .news, .spec, .end, .reel { padding-right: max(var(--gutter), calc((100% - 84rem) / 2)); }
}

/* panels turn to face the viewer as they reach the middle (progressive) */
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) and (min-width: 60rem) {
    .step .panel { animation: face linear both; animation-timeline: view(); animation-range: entry 0% cover 45%; }
    .step--flip .panel { --tilt: -1; }
    @keyframes face {
      from { transform: perspective(1400px) rotateY(calc(var(--tilt, 1) * -12deg)) rotateX(2deg) translateZ(-40px); opacity: 0.55; }
      to { transform: none; opacity: 1; }
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 120ms !important; }
  .stage__rig { animation: none; transform: none !important; }
}

/* press visual */
.press-visual { margin: var(--space-lg) 0 var(--space-sm); }
.press-visual img { width: 100%; height: auto; border-radius: var(--radius-panel); outline: var(--rule-hair) solid var(--color-rule); outline-offset: -1px; }
.kit-sec--codes { }

/* narrow screens: trailer label sits under the frame */
@media (max-width: 39.99rem) {
  .reel__label { position: static; margin: var(--space-xs) var(--space-xs) var(--space-xs); background: transparent; padding: 0; }
  .reel__btn { background: var(--color-paper-2); }
  .facts-tbl, .facts-tbl tbody, .facts-tbl tr, .facts-tbl th, .facts-tbl td { display: block; width: auto; }
  .facts-tbl th { padding: var(--space-xs) 0 0; border-bottom: 0; }
  .facts-tbl td { padding: 0 0 var(--space-xs); }
}
@media (min-width: 60rem) { .hero { padding-bottom: var(--space-xl); } }

/* document pages: the same horizon, faint, at the top */
body.legal, body.presskit { position: relative; isolation: isolate; }
body.legal::before, body.presskit::before {
  content: ""; position: absolute; z-index: -1; inset: 0 0 auto 0; height: 34rem; pointer-events: none;
  background: radial-gradient(ellipse 60% 55% at 50% 0%, var(--color-horizon), var(--color-horizon-0) 70%);
  opacity: 0.45;
}

.kit-sec:last-of-type { border-bottom: 0; }

/* keep 3D panels and the horizon inside their section (no layout overflow at all) */
.hero, .walk, .end, .reel { overflow-x: clip; }