:root {
  --paper: #f3efe6;
  --paper-light: #fbfaf6;
  --ink: #191812;
  --muted: #69675f;
  --line: #d8d2c6;
  --red: #dc5c3f;
  --green: #3d6d50;
  --night: #171914;
  --max: 1220px;
  color-scheme: light;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  scroll-behavior: smooth;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  text-rendering: optimizeLegibility;
}

body::selection { background: #d8dfcc; }
a { color: inherit; }
img { display: block; max-width: 100%; }
button { font: inherit; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: .75rem;
  left: .75rem;
  padding: .75rem 1rem;
  background: var(--ink);
  color: white;
  transform: translateY(-180%);
}
.skip-link:focus { transform: none; }

.container { width: min(calc(100% - 2.5rem), var(--max)); margin-inline: auto; }

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 86%, transparent);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(14px);
}

.nav { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; font-weight: 760; letter-spacing: -.03em; }
.brand img { width: 34px; height: 34px; border-radius: 9px; box-shadow: 0 0 0 1px var(--line); }
.nav-links { display: flex; align-items: center; gap: 2rem; font-size: .88rem; font-weight: 640; }
.nav-links a { text-decoration: none; }
.nav-links a:not(.nav-cta):hover { color: var(--green); }
.nav-cta { padding: .72rem 1rem; border-radius: 999px; background: var(--ink); color: white; }
.menu-button { display: none; border: 0; background: transparent; padding: .5rem; }
.menu-button span { display: block; width: 22px; height: 2px; background: currentColor; margin: 4px; }

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background-image: linear-gradient(to right, rgba(100,96,83,.07) 1px, transparent 1px), linear-gradient(to bottom, rgba(100,96,83,.07) 1px, transparent 1px);
  background-size: 40px 40px;
}
.hero::after { content: "気"; position: absolute; right: -3vw; top: -18rem; color: rgba(255,255,255,.36); font: 58rem/.9 "Songti SC", "Songti TC", serif; pointer-events: none; }
.hero-layout { position: relative; z-index: 1; min-height: calc(100svh - 70px); display: grid; grid-template-columns: 1.18fr .82fr; align-items: center; gap: clamp(3rem, 8vw, 7rem); padding-block: 6rem; }
.eyebrow { margin: 0; font: 650 .7rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow::before { content: ""; display: inline-block; width: 7px; height: 7px; margin: 0 .7rem .05rem 0; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 4px rgba(220,92,63,.13); }
h1, h2, h3, .display { font-family: Iowan Old Style, Baskerville, "Times New Roman", serif; font-weight: 500; }
h1 { max-width: 840px; margin: 1.8rem 0 0; font-size: clamp(4.3rem, 9vw, 9.2rem); line-height: .82; letter-spacing: -.065em; }
h1 em { display: block; color: var(--green); font-weight: 500; }
.hero-copy { max-width: 680px; margin: 2.1rem 0 0; color: var(--muted); font-size: clamp(1.08rem, 1.8vw, 1.32rem); line-height: 1.62; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 1.3rem; border: 1px solid var(--ink); border-radius: 999px; text-decoration: none; font-size: .9rem; font-weight: 720; transition: transform .18s ease, background .18s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--ink); color: white; }
.button-secondary { border-color: transparent; }

.practice-note { position: relative; width: min(100%, 410px); justify-self: end; padding: 1rem; transform: rotate(1.5deg); background: var(--paper-light); border: 1px solid #d6d0c4; box-shadow: 14px 16px 0 #d8dfcc, 0 25px 55px rgba(32,30,22,.12); }
.practice-note::before { content: ""; position: absolute; inset: 7px; border: 1px solid #e5dfd4; pointer-events: none; }
.note-head { position: relative; display: flex; justify-content: space-between; align-items: center; padding: .5rem .6rem 1rem; font: 620 .66rem ui-monospace, monospace; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.clear-demo { position: relative; z-index: 1; border: 0; padding: .2rem; background: transparent; color: var(--green); cursor: pointer; font: inherit; text-transform: uppercase; }
.ink-grid { position: relative; aspect-ratio: 1; margin: 0 .55rem; border: 2px solid var(--ink); background: linear-gradient(45deg, transparent calc(50% - .5px), rgba(25,24,18,.12) 50%, transparent calc(50% + .5px)), linear-gradient(-45deg, transparent calc(50% - .5px), rgba(25,24,18,.12) 50%, transparent calc(50% + .5px)), linear-gradient(to right, transparent calc(50% - .5px), rgba(25,24,18,.12) 50%, transparent calc(50% + .5px)), linear-gradient(to bottom, transparent calc(50% - .5px), rgba(25,24,18,.12) 50%, transparent calc(50% + .5px)); }
.ink-grid canvas { width: 100%; height: 100%; touch-action: none; cursor: crosshair; }
.demo-status { margin: .75rem .6rem .4rem; color: var(--muted); font: .63rem ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; text-align: center; }
.candidates { display: grid; grid-template-columns: repeat(6, 1fr); gap: .35rem; padding: .5rem .55rem .7rem; opacity: .42; transition: opacity .3s ease; }
.candidates[data-ready] { opacity: 1; }
.candidate { aspect-ratio: 1; border: 1px solid var(--line); background: white; font-family: "Songti SC", serif; font-size: 1.25rem; cursor: pointer; }
.candidate:hover, .candidate:focus { border-color: var(--green); color: var(--green); }

.platform-band { border-bottom: 1px solid var(--line); background: var(--paper-light); }
.platform-row { min-height: 102px; display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 3rem; }
.platform-list { display: grid; grid-template-columns: repeat(4, 1fr); border-left: 1px solid var(--line); }
.platform-list span { padding: .8rem 1.4rem; border-right: 1px solid var(--line); font-family: Iowan Old Style, Baskerville, serif; font-size: clamp(1.2rem, 2vw, 1.75rem); text-align: center; }

.section { padding-block: clamp(5.5rem, 11vw, 9rem); }
.section-intro { display: grid; grid-template-columns: .72fr 1.28fr; gap: 3rem; margin-bottom: 4rem; }
.section-intro h2 { max-width: 770px; margin: 0; font-size: clamp(3.4rem, 7vw, 6.6rem); line-height: .9; letter-spacing: -.052em; }
.section-intro h2 em { color: var(--red); }
.feature-list { border-block: 1px solid var(--line); }
.feature { display: grid; grid-template-columns: 80px .82fr 1.18fr; gap: 2rem; padding: 2.7rem 0; border-bottom: 1px solid var(--line); align-items: start; }
.feature:last-child { border-bottom: 0; }
.feature-number { color: var(--green); font: .72rem ui-monospace, monospace; }
.feature h3 { margin: -.2rem 0 0; font-size: clamp(2.1rem, 4vw, 3.5rem); line-height: .96; letter-spacing: -.035em; }
.feature p { max-width: 620px; margin: 0; color: var(--muted); font-size: 1.05rem; line-height: 1.7; }
.feature-tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: 1.1rem; }
.feature-tags span { padding: .38rem .62rem; border: 1px solid var(--line); border-radius: 999px; font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; }

.loop { background: var(--night); color: #f1ede4; }
.loop-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(4rem, 10vw, 9rem); }
.loop h2 { margin: 1rem 0 0; font-size: clamp(3.8rem, 7vw, 7rem); line-height: .86; letter-spacing: -.052em; }
.loop h2 em { color: #d3dfc7; }
.loop-copy { color: #aaa99f; font-size: 1.1rem; line-height: 1.7; }
.loop-steps { margin-top: 2.5rem; border-top: 1px solid #3c3d36; }
.loop-step { display: grid; grid-template-columns: 2.5rem 1fr auto; align-items: center; gap: 1rem; padding: 1.15rem 0; border-bottom: 1px solid #3c3d36; }
.loop-step b { font-family: Iowan Old Style, serif; font-size: 1.25rem; font-weight: 500; }
.loop-step span { color: #777970; font: .68rem ui-monospace, monospace; }
.loop-step i { color: var(--red); font-style: normal; }

.showcase-header { display: flex; justify-content: space-between; align-items: end; gap: 2rem; margin-bottom: 3.5rem; }
.showcase-header h2 { max-width: 700px; margin: .9rem 0 0; font-size: clamp(3.5rem, 7vw, 6.8rem); line-height: .88; letter-spacing: -.052em; }
.showcase-header p { max-width: 390px; color: var(--muted); line-height: 1.65; }
.screens { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1rem, 2.2vw, 2rem); align-items: stretch; }
.screen-card { min-width: 0; display: flex; flex-direction: column; }
.screen-frame { overflow: hidden; aspect-ratio: 3 / 4; display: grid; place-items: center; padding: .7rem; border: 1px solid var(--line); border-radius: 1.5rem; background: #17191e; box-shadow: 0 18px 45px rgba(40,37,29,.1); }
.screen-frame img { width: 100%; height: 100%; object-fit: contain; border-radius: 1rem; background: #080a0e; }
.screen-card h3 { margin: 1.2rem 0 .4rem; font-size: 1.65rem; }
.screen-card p { margin: 0; color: var(--muted); line-height: 1.55; font-size: .9rem; }

.trailer { background: var(--night); color: #f1ede4; }
.trailer-grid { display: grid; grid-template-columns: .66fr 1.34fr; gap: clamp(3rem, 8vw, 7rem); align-items: center; }
.trailer-copy h2 { margin: 1rem 0 1.5rem; font-size: clamp(3.4rem, 6vw, 6rem); line-height: .88; letter-spacing: -.05em; }
.trailer-copy p:last-child { color: #aaa99f; line-height: 1.7; }
.video-frame { overflow: hidden; padding: .5rem; border: 1px solid #3d3e38; border-radius: 1.5rem; background: #0d0e0b; box-shadow: 0 30px 80px rgba(0,0,0,.35); }
.video-frame video { display: block; width: 100%; aspect-ratio: 16 / 9; border-radius: 1rem; background: #0b0c09; }

.privacy-strip { border-block: 1px solid var(--line); background: var(--paper-light); }
.privacy-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 3rem; align-items: center; padding-block: 5rem; }
.privacy-grid h2 { margin: .8rem 0 0; font-size: clamp(3rem, 6vw, 5.5rem); line-height: .9; letter-spacing: -.05em; }
.privacy-copy { color: var(--muted); font-size: 1.07rem; line-height: 1.7; }
.text-link { display: inline-block; margin-top: .8rem; color: var(--green); font-weight: 720; text-underline-offset: 4px; }

.cta { padding-block: clamp(6rem, 13vw, 11rem); text-align: center; }
.cta .eyebrow::before { display: none; }
.cta h2 { max-width: 920px; margin: 1.3rem auto 0; font-size: clamp(4.1rem, 9vw, 9rem); line-height: .82; letter-spacing: -.062em; }
.cta h2 em { color: var(--green); }
.cta p { max-width: 620px; margin: 2rem auto 0; color: var(--muted); font-size: 1.12rem; line-height: 1.6; }
.cta .actions { justify-content: center; }

.site-footer { border-top: 1px solid var(--line); }
.footer-row { display: flex; justify-content: space-between; align-items: center; gap: 2rem; padding-block: 2rem; color: var(--muted); font-size: .82rem; }
.footer-links { display: flex; gap: 1.4rem; }
.footer-links a { text-underline-offset: 4px; }

.policy-main { min-height: 70vh; }
.policy-hero { border-bottom: 1px solid var(--line); padding-block: 6rem; }
.policy-hero h1 { max-width: 900px; font-size: clamp(4rem, 9vw, 8rem); }
.policy-body { width: min(calc(100% - 2.5rem), 760px); margin: 0 auto; padding-block: 5rem 8rem; }
.policy-body h2 { margin: 3.2rem 0 1rem; font-size: 2.2rem; }
.policy-body p, .policy-body li { color: var(--muted); line-height: 1.75; }
.policy-body strong { color: var(--ink); }
.policy-body a { color: var(--green); }

.analytics-main { padding-block: 4.5rem 7rem; }
.analytics-hero { display: flex; align-items: end; justify-content: space-between; gap: 3rem; padding-bottom: 3.5rem; border-bottom: 1px solid var(--line); }
.analytics-hero h1 { margin: 1.2rem 0 0; font-size: clamp(4rem, 8vw, 7.8rem); }
.analytics-hero > div > p:last-child { max-width: 680px; color: var(--muted); font-size: 1.1rem; line-height: 1.65; }
.analytics-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 2rem; overflow: hidden; border: 1px solid var(--line); border-radius: 1.25rem; background: var(--line); }
.analytics-stat { min-width: 0; padding: 1.8rem; background: var(--paper-light); }
.analytics-stat p { margin: 0; color: var(--muted); font-size: .82rem; }
.analytics-stat strong { display: block; margin-top: .7rem; font-family: Iowan Old Style, Baskerville, serif; font-size: 4.2rem; font-weight: 500; line-height: 1; }
.analytics-stat span { display: block; margin-top: .9rem; color: #8b887e; font: .62rem ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; }
.analytics-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 2rem; margin-top: 2rem; }
.analytics-panel { overflow: hidden; padding: 2rem; border: 1px solid var(--line); border-radius: 1.25rem; background: var(--paper-light); }
.analytics-panel h2 { margin: .8rem 0 2rem; font-size: 2.5rem; }
.path-row + .path-row { margin-top: 1.5rem; }
.path-row > div { display: flex; justify-content: space-between; gap: 1rem; }
.path-row code, .event-row code { display: block; color: var(--muted); font: .72rem ui-monospace, monospace; }
.path-row > span { display: block; height: 8px; margin-top: .65rem; overflow: hidden; border-radius: 999px; background: var(--paper); }
.path-row > span i { display: block; height: 100%; border-radius: inherit; background: var(--green); }
.event-row { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: .9rem; margin-inline: -2rem; padding: 1rem 2rem; border-top: 1px solid var(--line); }
.event-row b { font-size: .85rem; }
.event-row span { color: var(--muted); font-size: .78rem; }
.event-row code { margin-top: .3rem; }
.event-row time { color: #8b887e; font-size: .68rem; white-space: nowrap; }
.event-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
.event-cta_click { background: var(--red); }
.event-video_play { background: #a88036; }
.analytics-empty { display: grid; min-height: 230px; place-items: center; color: var(--muted); }
.analytics-note { margin-top: 2rem; padding: 1rem 1.2rem; border: 1px solid var(--line); border-radius: .8rem; color: var(--muted); font-size: .8rem; line-height: 1.5; }

@media (max-width: 900px) {
  .hero-layout, .section-intro, .loop-grid, .privacy-grid, .trailer-grid { grid-template-columns: 1fr; }
  .analytics-stats { grid-template-columns: 1fr 1fr; }
  .analytics-grid { grid-template-columns: 1fr; }
  .hero-layout { padding-block: 5rem 7rem; }
  .practice-note { justify-self: center; width: min(90%, 410px); }
  .feature { grid-template-columns: 45px 1fr; }
  .feature p, .feature-tags { grid-column: 2; }
  .screens { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .showcase-header { align-items: start; flex-direction: column; }
}

@media (max-width: 680px) {
  .container { width: min(calc(100% - 1.5rem), var(--max)); }
  .menu-button { display: block; }
  .nav-links { position: absolute; inset: 70px 0 auto; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: .6rem .75rem 1rem; background: var(--paper); border-bottom: 1px solid var(--line); }
  .nav-links[data-open] { display: flex; }
  .nav-links a { padding: 1rem; }
  .nav-cta { text-align: center; }
  h1 { font-size: clamp(4rem, 22vw, 6.4rem); }
  .feature { grid-template-columns: 1fr; gap: .8rem; }
  .feature p, .feature-tags { grid-column: auto; }
  .platform-row { grid-template-columns: 1fr; gap: 1rem; padding-block: 1.5rem; }
  .platform-list { grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
  .platform-list span { border-bottom: 1px solid var(--line); font-size: 1.2rem; }
  .screens { grid-template-columns: 1fr; }
  .screen-card + .screen-card { margin-top: 1rem; }
  .footer-row { align-items: flex-start; flex-direction: column; }
  .hero::after { display: none; }
  .analytics-stats { grid-template-columns: 1fr; }
  .analytics-nav { position: static; display: flex; flex-direction: row; align-items: center; padding: 0; border: 0; background: transparent; }
  .analytics-nav a { padding: .7rem; }
  .analytics-hero h1 { font-size: 4rem; }
  .event-row { grid-template-columns: auto 1fr; }
  .event-row time { grid-column: 2; }
}

@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}