/* Bare Stark — brand system (shared across pages) */
:root {
  --paper-up: #e8e8e4;
  --paper-lo: #d9d8d2;
  --ink: #0f0f0d;
  --ink-soft: #6a6a64;
  --ink-ghost: #9c9b94;
  --rule: #bfbdb4;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --serif: "Iowan Old Style", "Palatino", "Palatino Linotype", "Hiragino Mincho ProN", "YuMincho", serif;
}
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Yu Gothic", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  background: var(--paper-up);
  opacity: 0;
  animation: pageIn 1600ms var(--ease) 100ms forwards;
}
@keyframes pageIn { to { opacity: 1; } }

/* Horizon */
.horizon {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: linear-gradient(to bottom,
    var(--paper-up) 0%,
    var(--paper-up) 67.3%,
    var(--paper-lo) 71.3%,
    var(--paper-lo) 100%);
}
.horizon::after {
  content: '';
  position: absolute; left: 0; right: 0;
  top: 69.3147%; height: 1px;
  background: var(--rule); opacity: 0.55;
  transform: scaleX(0); transform-origin: center;
  animation: drawH 2718ms var(--ease) 400ms forwards,
             horizonBreath 14.2s ease-in-out 3200ms infinite;
}
@keyframes drawH { to { transform: scaleX(1); } }
@keyframes horizonBreath {
  0%, 100% { transform: scaleX(1) translateY(0); }
  50%      { transform: scaleX(1) translateY(-3px); }
}

/* Orb + shade */
.orb {
  position: fixed; top: -30vh; left: -30vw;
  width: 140vw; height: 130vh; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse at center,
    rgba(255, 255, 252, 0.55) 0%,
    rgba(255, 255, 252, 0.18) 22%,
    transparent 55%);
  animation: orbDrift 84s ease-in-out infinite;
  will-change: transform;
}
@keyframes orbDrift {
  0%   { transform: translate(0, 0) scale(1); }
  25%  { transform: translate(6vw, -3vh) scale(1.05); }
  50%  { transform: translate(10vw, 2vh) scale(1.1); }
  75%  { transform: translate(4vw, 5vh) scale(1.05); }
  100% { transform: translate(0, 0) scale(1); }
}
.shade {
  position: fixed; inset: -20vh -20vw; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse at center,
    transparent 0%, transparent 45%,
    rgba(0,0,0,0.05) 75%, rgba(0,0,0,0.09) 100%);
  animation: shadeDrift 112s ease-in-out infinite;
  will-change: transform;
}
@keyframes shadeDrift {
  0%   { transform: translate(0, 0); }
  50%  { transform: translate(-6vw, 3vh); }
  100% { transform: translate(0, 0); }
}

/* Grain */
.grain {
  position: fixed; inset: -60px; z-index: 5; pointer-events: none;
  opacity: 0.5; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='260' height='260'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.06  0 0 0 0 0.06  0 0 0 0 0.05  0 0 0 0.22 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  animation: grainShift 20s steps(6, end) infinite;
}
@keyframes grainShift {
  0% { background-position: 0 0; }
  16% { background-position: 40px 20px; }
  33% { background-position: -30px 60px; }
  50% { background-position: 70px -40px; }
  66% { background-position: -60px -20px; }
  83% { background-position: 20px 50px; }
  100% { background-position: 0 0; }
}

/* Corners */
.corner {
  position: fixed; width: 14px; height: 14px;
  opacity: 0.32; pointer-events: none; z-index: 3;
}
.corner::before, .corner::after { content: ''; position: absolute; background: var(--ink); }
.corner::before { top: 50%; left: 0; right: 0; height: 1px; transform: translateY(-50%); }
.corner::after  { left: 50%; top: 0; bottom: 0; width: 1px;  transform: translateX(-50%); }
.corner.tl { top: 24px; left: 24px; }
.corner.tr { top: 24px; right: 24px; }
.corner.bl { bottom: 24px; left: 24px; }
.corner.br { bottom: 24px; right: 24px; }

/* Meta labels */
.meta {
  position: fixed;
  font-family: var(--serif); font-style: italic;
  font-size: 13px; letter-spacing: 0.04em;
  color: var(--ink-soft);
  font-variant-numeric: oldstyle-nums;
  z-index: 3; pointer-events: none;
  opacity: 0; animation: rise 1600ms var(--ease) 1800ms forwards;
}
.meta.meta-tl { top: 46px; left: 52px; }
.meta.meta-tr { top: 46px; right: 52px; }
.meta.meta-bl { bottom: 46px; left: 52px; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* Seal */
.seal {
  position: fixed; bottom: 44px; right: 44px;
  width: 28px; height: 28px; color: var(--ink);
  z-index: 3; pointer-events: none;
  opacity: 0; animation: sealIn 2600ms var(--ease) 2200ms forwards;
}
@keyframes sealIn { to { opacity: 0.42; } }

/* Left rail */
.rail {
  position: fixed; top: 0; left: 52px;
  width: 1px; height: 100vh;
  background: var(--rule); z-index: 2; pointer-events: none; opacity: 0.7;
}
.rail::after {
  content: ''; position: absolute; top: 0; left: 0;
  width: 1px; height: var(--progress, 0%);
  background: var(--ink);
  transition: height 140ms linear;
}

/* Content */
main {
  position: relative; z-index: 4;
  max-width: 720px; margin: 0 auto;
  padding: 14vh 88px 16vh;
}

.mark {
  font-size: 11px; letter-spacing: 0.36em; text-transform: uppercase;
  color: var(--ink); margin: 0 0 16vh;
  display: inline-flex; align-items: center; gap: 14px;
  opacity: 0; transform: translateY(8px);
  animation: rise 1400ms var(--ease) 300ms forwards;
}
.breath {
  display: inline-block; width: 6px; height: 6px;
  background: var(--ink); border-radius: 50%;
  animation: breathe 2.71828s var(--ease) infinite;
}
@keyframes breathe {
  0%, 100% { opacity: 0.22; transform: scale(0.78); }
  50%      { opacity: 0.85; transform: scale(1); }
}

h1 {
  font-size: clamp(36px, 5.6vw, 64px);
  font-weight: 400; letter-spacing: -0.02em;
  line-height: 1.15; margin: 0 0 28px;
}
h1 .word {
  display: inline-block; opacity: 0;
  filter: blur(10px); transform: translateY(0.32em);
  animation: revealWord 1300ms var(--ease) forwards;
}
@keyframes revealWord { to { opacity: 1; filter: blur(0); transform: none; } }

.subtitle {
  font-size: clamp(15px, 1.5vw, 18px);
  color: var(--ink-soft); margin: 0;
  letter-spacing: 0.02em;
  opacity: 0; transform: translateY(8px);
  animation: rise 1414ms var(--ease) 2718ms forwards;
}

section { margin-top: 18vh; }
.section-mark {
  font-size: 10px; font-weight: 600; letter-spacing: 0.34em;
  text-transform: uppercase; color: var(--ink-soft);
  margin: 0 0 36px; display: flex; align-items: center; gap: 18px;
}
.section-mark::after {
  content: ''; flex: 1; height: 1px; background: var(--rule);
  transform: scaleX(0); transform-origin: left;
  transition: transform 1500ms var(--ease);
}
.reveal.in .section-mark::after { transform: scaleX(1); }

.prose p {
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.95; margin: 0 0 1.3em;
  opacity: 0; transform: translateY(14px);
  transition: opacity 1200ms var(--ease), transform 1200ms var(--ease);
}
.prose p:last-child { margin-bottom: 0; }
.reveal.in .prose p { opacity: 1; transform: none; }
.reveal.in .prose p:nth-child(1) { transition-delay: 250ms; }
.reveal.in .prose p:nth-child(2) { transition-delay: 430ms; }
.reveal.in .prose p:nth-child(3) { transition-delay: 610ms; }
.reveal.in .prose p:nth-child(4) { transition-delay: 790ms; }
.prose .lead {
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.55; letter-spacing: -0.005em;
}
.prose ul { list-style: none; padding: 0; margin: 0 0 1.3em; }
.prose li {
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.9;
  padding-left: 26px; position: relative;
  opacity: 0; transform: translateY(12px);
  transition: opacity 1100ms var(--ease), transform 1100ms var(--ease);
}
.prose li::before {
  content: ''; position: absolute;
  left: 0; top: 0.82em; width: 14px; height: 1px;
  background: var(--ink); opacity: 0.5;
}
.reveal.in .prose li { opacity: 1; transform: none; }
.reveal.in .prose li:nth-child(1) { transition-delay: 250ms; }
.reveal.in .prose li:nth-child(2) { transition-delay: 370ms; }
.reveal.in .prose li:nth-child(3) { transition-delay: 490ms; }
.reveal.in .prose li:nth-child(4) { transition-delay: 610ms; }
.reveal.in .prose li:nth-child(5) { transition-delay: 730ms; }

/* Stanza rows — for process / session list */
.stanza { list-style: none; padding: 0; margin: 0; }
.stanza li {
  display: grid; grid-template-columns: 64px 1fr;
  gap: 28px; padding: 32px 0;
  border-top: 1px solid var(--rule);
  align-items: baseline;
  opacity: 0; transform: translateY(18px);
  transition: opacity 1100ms var(--ease), transform 1100ms var(--ease);
}
.stanza li:last-child { border-bottom: 1px solid var(--rule); }
.reveal.in .stanza li { opacity: 1; transform: none; }
.reveal.in .stanza li:nth-child(1) { transition-delay: 200ms; }
.reveal.in .stanza li:nth-child(2) { transition-delay: 340ms; }
.reveal.in .stanza li:nth-child(3) { transition-delay: 480ms; }
.stanza .idx {
  font-size: 11px; letter-spacing: 0.3em;
  color: var(--ink-soft); font-variant-numeric: tabular-nums;
  padding-top: 0.6em;
}
.stanza .name {
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 400; letter-spacing: -0.01em;
  margin: 0 0 8px;
}
.stanza .desc {
  font-size: 14.5px; color: var(--ink-soft);
  margin: 0; line-height: 1.75;
}

/* Aside — refund guarantee box */
.aside {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 36px 0;
  opacity: 0; transform: translateY(14px);
  transition: opacity 1200ms var(--ease), transform 1200ms var(--ease);
}
.reveal.in .aside { opacity: 1; transform: none; transition-delay: 250ms; }
.aside h3 {
  font-family: var(--serif); font-style: italic;
  font-size: clamp(18px, 1.8vw, 22px);
  font-weight: 400; margin: 0 0 16px;
  color: var(--ink);
}
.aside p { font-size: 15px; line-height: 1.85; margin: 0 0 10px; color: var(--ink-soft); }
.aside p:last-child { margin-bottom: 0; }
.aside ul { list-style: none; padding: 0; margin: 12px 0; }
.aside li {
  font-size: 15px; padding-left: 26px; position: relative;
  color: var(--ink); line-height: 1.8;
}
.aside li::before {
  content: ''; position: absolute; left: 0; top: 0.85em;
  width: 14px; height: 1px; background: var(--ink); opacity: 0.5;
}
.aside .footnote {
  font-family: var(--serif); font-style: italic;
  font-size: 13px; color: var(--ink-ghost); margin-top: 14px;
}

/* Price tag */
.price {
  margin: 4vh 0 0;
  display: flex; align-items: baseline; gap: 18px;
  font-variant-numeric: oldstyle-nums;
}
.price .amount {
  font-size: clamp(44px, 6vw, 68px);
  font-weight: 400; letter-spacing: -0.03em;
  line-height: 1;
}
.price .unit {
  font-family: var(--serif); font-style: italic;
  font-size: 15px; color: var(--ink-soft); letter-spacing: 0.02em;
}

/* CTA */
.cta-block { margin-top: 4vh; }
.cta {
  display: inline-flex; align-items: center; justify-content: space-between;
  gap: 24px;
  background: var(--ink); color: var(--paper-up);
  padding: 20px 32px; min-width: 320px;
  border: none; cursor: pointer;
  font: inherit; font-size: 13px; letter-spacing: 0.24em;
  text-transform: uppercase;
  text-decoration: none;
  transition: transform 500ms var(--ease), background 500ms var(--ease);
}
.cta:hover:not(:disabled) { transform: translateY(-2px); background: #1a1a17; }
.cta:disabled { background: var(--ink-ghost); cursor: not-allowed; color: var(--paper-up); }
.cta .arrow { font-size: 18px; }
.cta-hint {
  font-family: var(--serif); font-style: italic;
  font-size: 13px; color: var(--ink-soft);
  margin-top: 14px; letter-spacing: 0.02em;
}

/* Seat badge (top right) */
.seat-badge {
  position: fixed; top: 44px; right: 52px;
  font-family: var(--serif); font-style: italic;
  font-size: 13px; color: var(--ink-soft);
  font-variant-numeric: oldstyle-nums;
  letter-spacing: 0.04em;
  z-index: 3;
  opacity: 0; animation: rise 1600ms var(--ease) 1800ms forwards;
}
.seat-badge.sold { color: var(--ink); }

/* FAQ */
.faq details {
  border-top: 1px solid var(--rule);
  padding: 24px 0;
}
.faq details:last-of-type { border-bottom: 1px solid var(--rule); }
.faq summary {
  font-size: 16px; font-weight: 500;
  cursor: pointer; list-style: none;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+';
  font-family: var(--serif); font-size: 22px;
  color: var(--ink-soft); transition: transform 400ms var(--ease);
}
.faq details[open] summary::after { content: '−'; }
.faq .answer {
  margin-top: 14px; font-size: 14.5px; color: var(--ink-soft);
  line-height: 1.9;
}

/* Footer */
footer {
  margin-top: 18vh; padding-top: 32px;
  border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between; gap: 16px;
  flex-wrap: wrap;
  font-size: 12px; letter-spacing: 0.06em; color: var(--ink-soft);
}
footer a {
  color: inherit; text-decoration: none;
  position: relative; padding-bottom: 2px;
}
footer a::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  height: 1px; width: 100%; background: currentColor;
  transform: scaleX(0); transform-origin: right;
  transition: transform 600ms var(--ease);
}
footer a:hover { color: var(--ink); }
footer a:hover::after { transform: scaleX(1); transform-origin: left; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
  body, .mark, .subtitle, h1 .word,
  .prose p, .prose li, .stanza li, .aside, .seat-badge,
  .meta, .seal, .horizon::after {
    opacity: 1 !important; transform: none !important; filter: none !important;
  }
  .seal { opacity: 0.42 !important; }
  .orb, .shade, .grain { animation: none !important; }
  .section-mark::after { transform: scaleX(1) !important; }
}

/* Mobile */
@media (max-width: 720px) {
  main { padding: 10vh 28px 12vh; }
  .rail { left: 16px; }
  .mark { margin-bottom: 12vh; }
  section { margin-top: 14vh; }
  .stanza li { grid-template-columns: 44px 1fr; gap: 16px; padding: 24px 0; }
  .meta.meta-tl { top: 34px; left: 30px; }
  .meta.meta-bl { bottom: 34px; left: 30px; }
  .seat-badge { top: 34px; right: 24px; font-size: 12px; }
  .seal { bottom: 28px; right: 28px; }
  .corner.tl { top: 16px; left: 16px; }
  .corner.tr { top: 16px; right: 16px; }
  .corner.bl { bottom: 16px; left: 16px; }
  .corner.br { bottom: 16px; right: 16px; }
  .cta { min-width: 0; width: 100%; padding: 18px 22px; }
}