:root {
  --koegaki-ink: #241b10;
  --koegaki-soft: #665843;
  --koegaki-paper: #fbf7ee;
  --koegaki-paper-deep: #f1eadc;
  --koegaki-white: #fffdf8;
  --koegaki-line: #dfd3ba;
  --koegaki-gold: #9e7a3d;
  --koegaki-gold-deep: #6f552b;
  --koegaki-charcoal: #2f2c27;
  --koegaki-shadow: 0 20px 44px rgba(49, 37, 21, 0.16);
  --content-max: 1120px;
  --text-max: 540px;
  --section-space: 92px;
}

body {
  background: var(--koegaki-paper);
  color: var(--koegaki-ink);
  overflow-x: clip;
}

.block {
  position: relative;
  overflow: hidden;
  padding: 72px 20px;
}

.block__inner {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
}

.hero {
  padding-top: 48px;
  background:
    linear-gradient(90deg, rgba(158, 122, 61, 0.08) 1px, transparent 1px) 0 0 / 56px 56px,
    radial-gradient(circle at 18% 16%, rgba(158, 122, 61, 0.16), transparent 24%),
    var(--koegaki-paper);
}

.hero::after,
.note-flow::before,
.review-flow::after {
  content: "";
  position: absolute;
  pointer-events: none;
  border: 1px solid rgba(158, 122, 61, 0.28);
  opacity: 0.65;
}

.hero::after {
  width: 360px;
  height: 360px;
  right: -110px;
  top: 110px;
  border-radius: 50%;
}

.hero__inner,
.split {
  display: grid;
  gap: 44px;
  align-items: center;
}

.hero__copy,
.split__copy {
  min-width: 0;
}

.hero__intro {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.hero__icon {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  box-shadow: 0 8px 20px rgba(49, 37, 21, 0.16);
}

.hero__appname,
.hero__badge,
.section-kicker {
  margin: 0;
  color: var(--koegaki-gold-deep);
  font-weight: 700;
}

.hero__appname {
  font-size: 1.25rem;
}

.hero__badge,
.section-kicker {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.hero__title,
.section-heading,
.final-cta__title {
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  letter-spacing: 0;
  color: var(--koegaki-charcoal);
}

.hero__title {
  margin: 0 0 22px;
  font-size: clamp(2.2rem, 7vw, 4.8rem);
  line-height: 1.18;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.hero__lead,
.section-text,
.final-cta__text {
  margin: 0;
  max-width: var(--text-max);
  color: var(--koegaki-soft);
  line-height: 1.9;
  overflow-wrap: anywhere;
}

.hero__lead {
  font-size: 1.04rem;
}

.hero__cta {
  margin-top: 28px;
}

.device-note,
.section-note {
  margin: 14px 0 0;
  color: var(--koegaki-soft);
  font-size: 0.84rem;
}

.store-badge {
  display: inline-block;
  line-height: 0;
  border-radius: 10px;
}

.hero__shots,
.paired-shots,
.gallery,
.share-combo,
.watch-shots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
}

.phone-shot,
.watch-shot {
  margin: 0;
}

.phone-shot img,
.watch-shot img {
  width: 100%;
  height: auto;
  border-radius: 24px;
  border: 1px solid rgba(158, 122, 61, 0.22);
  box-shadow: var(--koegaki-shadow);
  background: var(--koegaki-white);
}

.phone-shot {
  width: min(250px, 74vw);
}

.phone-shot--main {
  width: min(300px, 78vw);
}

.phone-shot--sub,
.phone-shot--small {
  width: min(190px, 44vw);
}

.phone-shot--narrow {
  width: min(210px, 48vw);
}

.phone-shot--wide {
  width: min(286px, 72vw);
}

.phone-shot--share {
  width: min(280px, 68vw);
}

figcaption {
  margin-top: 12px;
  color: var(--koegaki-soft);
  font-size: 0.86rem;
  line-height: 1.6;
}

.note-flow,
.share-flow {
  background: var(--koegaki-white);
}

.note-flow::before {
  width: 220px;
  height: 420px;
  left: -84px;
  top: 70px;
  transform: rotate(-12deg);
}

.place-flow {
  background: linear-gradient(180deg, var(--koegaki-paper-deep), #f8f2e7);
}

.playback-flow {
  background: var(--koegaki-white);
}

.review-flow {
  background: #fdfbf6;
}

.review-flow::after {
  width: 620px;
  height: 1px;
  left: 50%;
  top: 84px;
  transform: translateX(-50%);
}

.watch-flow,
.features {
  background: var(--koegaki-paper);
}

.section-kicker {
  margin-bottom: 10px;
  text-transform: uppercase;
}

.section-heading {
  margin: 0 0 18px;
  font-size: clamp(1.55rem, 3.3vw, 2.35rem);
  line-height: 1.45;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.section-heading--center,
.center-copy {
  text-align: center;
  margin-inline: auto;
}

.center-copy {
  max-width: 700px;
  margin-bottom: 42px;
}

.center-copy .section-text,
.section-heading--center {
  margin-left: auto;
  margin-right: auto;
}

.split--reverse .split__copy {
  order: 2;
}

.large-shot {
  display: flex;
  justify-content: center;
}

.gallery {
  align-items: flex-start;
}

.watch-shots {
  align-items: flex-start;
}

.watch-shot {
  width: min(240px, 46vw);
}

.watch-shot img {
  border-radius: 20px;
  background: #000;
}

.features__grid {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.features__grid li {
  padding: 22px;
  background: var(--koegaki-white);
  border: 1px solid var(--koegaki-line);
  border-radius: 8px;
  box-shadow: 0 10px 26px rgba(49, 37, 21, 0.08);
}

.features__grid h3 {
  margin: 0 0 8px;
  color: var(--koegaki-gold-deep);
  font-size: 1rem;
}

.features__grid p {
  margin: 0;
  color: var(--koegaki-soft);
  font-size: 0.93rem;
  line-height: 1.75;
}

.faq {
  background: var(--koegaki-paper);
}

.faq__list {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  gap: 0;
}

.faq__item {
  border-top: 1px solid var(--koegaki-line);
  padding: 20px 0;
}

.faq__item:last-child {
  border-bottom: 1px solid var(--koegaki-line);
}

.faq__item dt {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--koegaki-gold-deep);
}

.faq__item dd {
  margin: 0;
  color: var(--koegaki-soft);
  font-size: 0.92rem;
  line-height: 1.8;
}

.final-cta {
  background: var(--koegaki-charcoal);
  color: #fffdf8;
}

.final-cta__inner {
  text-align: center;
}

.final-cta__title {
  margin: 0 0 14px;
  color: #fffdf8;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.final-cta__text {
  margin-inline: auto;
  color: rgba(255, 253, 248, 0.78);
}

.final-cta .store-badge {
  margin-top: 26px;
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

@media (min-width: 760px) {
  .block {
    padding-block: var(--section-space);
  }

  .hero__inner,
  .split {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }

  .split--reverse {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .features__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 759px) {
  .hero__inner,
  .split {
    display: flex;
    flex-direction: column;
    align-items: stretch;
  }

  .hero__shots,
  .paired-shots,
  .gallery,
  .share-combo,
  .watch-shots {
    flex-wrap: wrap;
  }

  .split--reverse .split__copy {
    order: 0;
  }

  .hero__title {
    max-width: 100%;
    font-size: clamp(1.48rem, 6.8vw, 1.7rem);
    line-height: 1.38;
    word-break: break-all;
    overflow-wrap: anywhere;
  }

  .hero__lead,
  .section-text,
  .device-note,
  figcaption {
    max-width: 100%;
    word-break: break-all;
  }

  .phone-shot--sub,
  .phone-shot--small {
    display: none;
  }

  .watch-shot {
    width: min(220px, 74vw);
  }
}

@media (max-width: 420px) {
  .site-header__inner {
    display: grid;
    grid-template-columns: 1fr;
  }

  .site-header__back {
    justify-self: start;
    max-width: 100%;
  }

  .block {
    padding-inline: 16px;
  }

  .hero__intro {
    align-items: flex-start;
  }

  .features__grid li {
    padding: 18px;
  }
}