:root {
  --ink: #16131d;
  --muted: #6d6578;
  --paper: #fffdf8;
  --line: #e7ddd1;
  --pink: #ff4f91;
  --cyan: #1fc7d4;
  --yellow: #ffc83d;
  --green: #49c47b;
  --violet: #7556ff;
  font-family: "Inter", "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}
* { box-sizing: border-box; }
html { overflow-x: hidden; }
body {
  margin: 0;
  color: var(--ink);
  overflow-x: hidden;
  background:
    linear-gradient(90deg, rgba(22,19,29,.04) 1px, transparent 1px),
    linear-gradient(0deg, rgba(22,19,29,.035) 1px, transparent 1px),
    var(--paper);
  background-size: 28px 28px;
}
a { color: inherit; }
img, video, iframe { max-width: 100%; }
.hero > *,
.demo-grid > *,
.workflow-layout > *,
.motivation-card > *,
.preview-video > *,
.section-title,
.summary-strip > *,
.screen-grid > *,
.feature-grid > *,
.risk-list > * {
  min-width: 0;
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  padding: 14px clamp(18px, 5vw, 72px);
  background: rgba(255,253,248,.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.brand { font-weight: 900; text-decoration: none; }
nav { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
nav a,
.hero-actions a,
.audit-link,
.video-link {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  width: fit-content;
  color: var(--ink);
  padding: 8px 12px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: #fff;
  font-weight: 900;
  text-decoration: none;
  box-shadow: 4px 4px 0 rgba(22,19,29,.12);
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, .48fr) minmax(360px, .52fr);
  gap: clamp(22px, 5vw, 70px);
  align-items: center;
  padding: clamp(52px, 8vw, 96px) clamp(18px, 5vw, 72px);
  background: linear-gradient(135deg, rgba(31,199,212,.12), rgba(255,79,145,.12) 46%, rgba(255,200,61,.16));
  border-bottom: 4px solid var(--ink);
}
.eyebrow {
  margin: 0 0 10px;
  font-weight: 900;
  color: #5d5467;
}
h1, h2, h3, p, li, code, a, blockquote { overflow-wrap: anywhere; }
h1 {
  margin: 0;
  font-size: clamp(42px, 6.2vw, 78px);
  line-height: .98;
  letter-spacing: 0;
}
h1 span,
h2 span { display: block; }
h2 {
  margin: 0;
  font-size: clamp(32px, 4.4vw, 56px);
  line-height: 1.04;
  letter-spacing: 0;
}
h3 { margin: 0; font-size: 22px; }
.lead {
  max-width: 680px;
  color: #3d3546;
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.75;
}
code {
  display: inline-block;
  padding: 1px 5px;
  border-radius: 5px;
  background: rgba(22,19,29,.08);
  white-space: nowrap;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.hero-shot {
  margin: 0;
  transform: rotate(1deg);
}
.hero-shot img,
.workflow-layout img,
.screen-grid img {
  width: 100%;
  display: block;
  border: 3px solid var(--ink);
  border-radius: 8px;
  background: #fff;
  box-shadow: 10px 10px 0 var(--cyan), -8px -8px 0 var(--pink);
}
.hero-shot figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-weight: 800;
}
.summary-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 18px clamp(18px, 5vw, 72px);
  background: var(--ink);
}
.summary-strip article,
.feature-grid article,
.risk-list article,
.screen-grid article {
  min-width: 0;
  padding: 18px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: #fff;
}
.summary-strip span {
  display: block;
  color: var(--muted);
  font-weight: 900;
}
.summary-strip strong {
  display: block;
  margin: 8px 0;
  font-size: clamp(24px, 3vw, 36px);
}
.summary-strip p,
.section-title p,
.feature-grid p,
.risk-list span,
.screen-grid p,
.motivation-card p,
.demo-note p,
.honest-note p,
.preview-video p {
  color: var(--muted);
  line-height: 1.75;
}
.demo-band,
.motivation-band,
.workflow-band,
.screens-band,
.features-band,
.release-band {
  padding: clamp(50px, 7vw, 90px) clamp(18px, 5vw, 72px);
}
.demo-band { background: #101018; color: #fff; }
.demo-band .section-title p { color: #ddd7ea; }
.motivation-band {
  background: #fff;
  border-bottom: 4px solid var(--ink);
}
.motivation-card {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 22px;
  align-items: center;
  max-width: 1080px;
  margin-top: 24px;
  padding: clamp(20px, 4vw, 34px);
  border: 3px solid var(--ink);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(255,200,61,.18), rgba(31,199,212,.14));
  box-shadow: 10px 10px 0 var(--yellow);
}
.motivation-card img {
  width: 140px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.motivation-card blockquote {
  margin: 0 0 12px;
  font-size: clamp(21px, 2.5vw, 34px);
  line-height: 1.45;
  font-weight: 900;
}
.demo-grid {
  display: grid;
  grid-template-columns: minmax(320px, .68fr) minmax(220px, .32fr);
  gap: 18px;
  align-items: stretch;
  margin-top: 24px;
}
.embed-card {
  display: grid;
  gap: 10px;
  align-content: start;
}
.embed-card iframe,
.preview-video video {
  width: 100%;
  min-width: 0;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 8px;
  background: #000;
}
.demo-note,
.honest-note,
.preview-video {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  padding: 16px;
  border: 2px solid var(--cyan);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}
.demo-note img,
.honest-note img {
  width: 110px;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.workflow-band { background: #fff7df; border-bottom: 4px solid var(--ink); }
.workflow-layout {
  display: grid;
  grid-template-columns: minmax(260px, .38fr) minmax(320px, .62fr);
  gap: 28px;
  align-items: start;
  margin-top: 24px;
}
.workflow-layout img {
  box-shadow: 8px 8px 0 var(--yellow);
}
ol {
  margin: 0;
  padding: 0;
  counter-reset: steps;
  display: grid;
  gap: 12px;
}
ol li {
  list-style: none;
  counter-increment: steps;
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 14px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: #fff;
  font-weight: 800;
}
ol li::before {
  content: counter(steps);
  flex: 0 0 36px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--cyan);
  color: #fff;
  font-weight: 900;
}
ol li span { min-width: 0; }
.screen-grid,
.feature-grid,
.risk-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}
.screen-grid img {
  box-shadow: none;
  margin-bottom: 14px;
}
.preview-video {
  grid-template-columns: minmax(220px, .34fr) minmax(300px, .66fr);
  margin-top: 18px;
  border-color: var(--pink);
}
.features-band {
  background: #eefafa;
  border-top: 4px solid var(--ink);
  border-bottom: 4px solid var(--ink);
}
.release-band { background: #fff; }
.risk-list article {
  display: grid;
  grid-template-columns: 60px minmax(0, 1fr);
  gap: 12px;
}
.risk-list strong {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 8px;
  background: var(--yellow);
  border: 2px solid var(--ink);
}
.audit-link { margin-top: 18px; }
.honest-note {
  margin-top: 22px;
  border-color: var(--violet);
}
footer {
  padding: 24px clamp(18px, 5vw, 72px);
  background: var(--ink);
  color: #fff;
}
footer p { margin: 0; }

@media (max-width: 980px) {
  .hero,
  .demo-grid,
  .motivation-card,
  .workflow-layout,
  .preview-video {
    grid-template-columns: 1fr;
  }
  .summary-strip,
  .screen-grid,
  .feature-grid,
  .risk-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .topbar {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }
  nav { justify-content: flex-start; }
  h1 {
    font-size: 34px;
    line-height: 1.08;
    word-break: break-all;
  }
  h2 {
    font-size: 28px;
    line-height: 1.16;
    word-break: break-all;
  }
  .hero { padding: 42px 24px; overflow: hidden; }
  .hero-shot { transform: none; }
  .hero-shot img,
  .workflow-layout img,
  .screen-grid img {
    box-shadow: 6px 6px 0 var(--cyan);
  }
  .lead { font-size: 16px; }
  .motivation-card blockquote {
    font-size: 18px;
  }
  nav a,
  .hero-actions a,
  .audit-link,
  .video-link {
    max-width: 100%;
    min-height: 34px;
    padding: 7px 10px;
  }
  .demo-band,
  .motivation-band,
  .workflow-band,
  .screens-band,
  .features-band,
  .release-band {
    padding-left: 24px;
    padding-right: 24px;
  }
  .summary-strip,
  .screen-grid,
  .feature-grid,
  .risk-list {
    grid-template-columns: 1fr;
  }
  .demo-note,
  .motivation-card,
  .honest-note {
    grid-template-columns: 70px minmax(0, 1fr);
    padding: 14px;
  }
  .demo-note img,
  .motivation-card img,
  .honest-note img {
    width: 70px;
  }
  .motivation-card {
    grid-template-columns: 1fr;
  }
  .motivation-card img {
    width: 92px;
  }
  .preview-video {
    padding: 14px;
  }
}