:root {
  color-scheme: light;
  --ink: #171717;
  --muted: #626262;
  --red: #c90032;
  --red-dark: #a50029;
  --line: #e8e6e4;
  --soft: #f7f7f6;
  --rose: #fff3f5;
  --rose-line: #f5d8df;
  --white: #fff;
  --wrap: 72rem;
  --gutter: clamp(1.25rem, 5vw, 3.5rem);
  --section: clamp(3.5rem, 8vw, 7rem);
  --radius: 0.625rem;
  font-family: system-ui, "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--ink);
  background: var(--white);
}

*, *::before, *::after { box-sizing: border-box; }
body, h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
body { font-size: 1rem; line-height: 1.75; }
ul, ol { padding: 0; }
a { color: inherit; text-underline-offset: 0.22em; }
img { display: block; max-inline-size: 100%; block-size: auto; }
:focus-visible { outline: 2px solid var(--red-dark); outline-offset: 4px; }
section[id], #product { scroll-margin-block-start: 1.5rem; }
.wrap { width: min(calc(100% - var(--gutter) * 2), var(--wrap)); margin-inline: auto; }

.skip {
  position: fixed;
  z-index: 3;
  inset: 0.75rem auto auto 0.75rem;
  transform: translateY(-160%);
  border-radius: var(--radius);
  padding: 0.65rem 1rem;
  background: var(--white);
}
.skip:focus { transform: none; }

.site-header { border-bottom: 1px solid var(--line); }
.header-inner {
  position: relative;
  min-height: 4.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.42rem;
  font-weight: 760;
  letter-spacing: -0.05em;
  text-decoration: none;
}
.brand img { flex: none; border-radius: 0.45rem; }
.site-header ul, .site-footer ul {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2rem);
  list-style: none;
}
.site-header nav a, .site-footer nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  min-height: 2.75rem;
  font-size: 0.875rem;
  font-weight: 650;
  text-decoration: none;
}
.site-header nav a:not(.button):hover, .site-footer nav a:hover {
  color: var(--red-dark);
  text-decoration: underline;
}
.mobile-menu { display: none; }

.hero-section {
  background: linear-gradient(120deg, #fff 6%, #ed003009 60%, #ed003014);
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.14fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(1.5rem, 4vw, 4.25rem);
  padding-block: clamp(3.5rem, 6vw, 5.5rem) clamp(3rem, 5.75vw, 5rem);
}
.hero-copy { padding-block-end: 1.5rem; }
.slogan {
  color: var(--red-dark);
  font-size: clamp(2.65rem, 5.4vw, 4.5rem);
  font-weight: 780;
  line-height: 1.2;
  letter-spacing: -0.06em;
  margin-bottom: 1.35rem;
}
.slogan::after {
  content: "";
  display: block;
  width: 2.35rem;
  height: 2px;
  margin-top: 1.15rem;
  background: var(--red);
}
h1, h2, h3, p { overflow-wrap: anywhere; line-break: strict; word-break: auto-phrase; }
h1 {
  font-size: clamp(1.95rem, 3.5vw, 3.15rem);
  font-weight: 720;
  line-height: 1.32;
  letter-spacing: -0.05em;
}
h1 span { display: block; }
.hero-lead {
  max-width: 30rem;
  margin-top: 1.4rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.8;
}
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.85rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-height: 3rem;
  padding: 0.65rem 1.1rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 700;
  text-decoration: none;
}
.button svg { flex: none; }
.button.primary { color: var(--white); background: var(--red); }
.button.primary:hover { background: var(--red-dark); }
.button.secondary { border-color: #ccc8c6; background: var(--white); }
.button.secondary:hover { border-color: var(--ink); }

.hero-stage, .product-stage {
  position: relative;
  display: grid;
  justify-items: center;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--white);
}
.hero-stage {
  padding: 3.25rem 1.5rem 1.6rem;
}
.stage-label {
  position: absolute;
  inset: 0.9rem auto auto 1.15rem;
  display: inline-flex;
  align-items: center;
  gap: 0.48rem;
  color: var(--red-dark);
  font-size: 0.6875rem;
  font-weight: 750;
  letter-spacing: 0.085em;
}
.stage-label span, .status span {
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 50%;
  background: currentColor;
}
.device {
  width: min(100%, 20.5rem);
  padding: 0.31rem;
  border: 1px solid #332e2d;
  border-radius: 1.4rem;
  background: #332e2d;
  box-shadow: 0 7px 18px #442d2815;
}
.device img { width: 100%; border-radius: 1rem; background: var(--white); }
.hero-figure figcaption {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 0.6rem;
  margin-top: 0.7rem;
  color: var(--muted);
  font-size: 0.8125rem;
}
.caption-tag { font-weight: 700; color: var(--ink); }
.caption-tag::after { content: " /"; color: var(--muted); margin-inline-start: 0.4rem; }

.section { padding-block: var(--section); }
.divided { border-top: 1px solid var(--line); }
.tinted { background: var(--soft); }
.section-intro { max-width: 46rem; }
.eyebrow {
  margin-bottom: 0.9rem;
  color: var(--red-dark);
  font-size: 0.8125rem;
  font-weight: 750;
  letter-spacing: 0.04em;
}
h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
h3 { font-size: 1.125rem; line-height: 1.55; }
.section-lead {
  max-width: 42rem;
  margin-top: 1.1rem;
  color: var(--muted);
}
.problem-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2.5rem);
  margin-top: clamp(2rem, 4vw, 3.25rem);
  list-style: none;
}
.problem-list li {
  border-top: 1px solid #d9d6d4;
  padding-top: 1.25rem;
}
.item-index {
  display: block;
  color: var(--red-dark);
  font-size: 0.8125rem;
  font-weight: 740;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}
.problem-list .item-index { margin-bottom: 0.7rem; }
.problem-list p, .flow-caption p, .value-list p, .progress-panel > p:not(.status) {
  color: var(--muted);
  margin-top: 0.42rem;
}
.editorial {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}
.value-list { border-top: 1px solid #d9d6d4; list-style: none; }
.value-list li {
  display: grid;
  grid-template-columns: 1.5rem minmax(0, 1fr);
  gap: 0.8rem;
  align-items: baseline;
  border-bottom: 1px solid #d9d6d4;
  padding-block: 0.92rem;
}
.solution-subtitle { margin-top: 1rem; font-size: 1.125rem; font-weight: 700; }
.solution-subtitle + .section-lead { margin-top: 0.55rem; }
.flow-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2rem);
  margin-top: 2rem;
  list-style: none;
}
.flow-step {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}
.flow-step-wide { grid-column: 1 / -1; }
.flow-caption {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}
.flow-caption .item-index { flex: none; }
.product-stage { flex: 1; padding: clamp(1.25rem, 3vw, 2rem); }
.product-stage .device { width: min(100%, 22rem); }
.review-feature {
  align-items: center;
  gap: clamp(1.4rem, 5vw, 4rem);
  margin-top: clamp(1.75rem, 4vw, 3.5rem);
  padding-top: clamp(1.5rem, 3.5vw, 3rem);
  border-top: 1px solid var(--line);
}
.review-feature h3 { font-size: clamp(1.25rem, 2.3vw, 1.75rem); }
.review-lead { margin-top: 0.8rem; font-weight: 700; }
.review-feature .section-lead { margin-top: 0.6rem; }
.review-feature .device { width: min(100%, 17.5rem); justify-self: center; }
.note { margin-top: 1.35rem; color: var(--muted); font-size: 0.875rem; }
.progress-panel {
  padding: clamp(1.2rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--soft);
  font-size: clamp(1.125rem, 1.4vw, 1.1875rem);
}
.status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.7rem;
  padding: 0.23rem 0.65rem;
  border-radius: 2rem;
  background: #f3e5e4;
  color: var(--red-dark);
  font-size: 0.9375rem;
  font-weight: 750;
}
.progress-panel h3 {
  font-size: clamp(1.5rem, 2.15vw, 1.75rem);
  line-height: 1.45;
}
.updates { border-top: 1px solid var(--line); list-style: none; margin-top: 1rem; padding-top: 1rem; }
.updates li + li { margin-top: 0.5rem; }
.updates time { color: var(--muted); font-variant-numeric: tabular-nums; margin-inline-end: 0.5rem; }
.news-section { padding-block: clamp(3.5rem, 6vw, 5.25rem); }
.news-list { margin-top: clamp(1.25rem, 3vw, 2rem); border-top: 1px solid var(--line); }
.news-entry { padding-block: clamp(1.25rem, 3vw, 1.85rem); }
.news-entry + .news-entry { border-top: 1px solid var(--line); }
.news-entry-with-photo {
  display: grid;
  grid-template-columns: minmax(0, 20rem) minmax(0, 1fr);
  align-items: center;
  gap: clamp(1rem, 4vw, 3rem);
}
.news-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
}
.news-copy { max-width: 45rem; }
.news-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.75rem;
  margin-bottom: 0.65rem;
  color: var(--muted);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
}
.news-meta span {
  padding: 0.1rem 0.55rem;
  border-radius: 1rem;
  background: var(--rose);
  color: var(--red-dark);
  font-weight: 700;
}
.news-entry h3 { font-size: clamp(1.125rem, 2vw, 1.375rem); }
.news-body { margin-top: 0.55rem; color: var(--muted); word-break: normal; }
.news-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem 1.35rem;
  margin-top: 1.15rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
.news-details div { min-width: 0; }
.news-details dt { color: var(--red-dark); font-size: 0.78rem; font-weight: 700; }
.news-details dd { margin-top: 0.2rem; color: var(--muted); font-size: 0.9rem; line-height: 1.65; }
.news-link { display: inline-flex; align-items: center; min-height: 2.75rem; margin-top: 0.25rem; color: var(--red-dark); }
.profile {
  padding: clamp(1rem, 3vw, 1.75rem);
  border: 1px solid var(--rose-line);
  border-radius: var(--radius);
  background: #fffbfc;
}
.profile-header { display: flex; align-items: center; gap: clamp(0.85rem, 2vw, 1.35rem); }
.profile-header img { flex: none; width: clamp(4.75rem, 10vw, 7rem); border-radius: var(--radius); }
.profile-label { color: var(--red-dark); font-size: 0.875rem; font-weight: 700; }
.profile h3 { margin-top: 0.25rem; font-size: 1.625rem; }
.profile-affiliation, .profile-details dd { color: var(--muted); }
.profile-details { margin-top: 1.15rem; }
.profile-details div {
  display: grid;
  grid-template-columns: 5.25rem minmax(0, 1fr);
  gap: 0.65rem;
  border-top: 1px solid var(--rose-line);
  padding-block: 0.7rem;
  font-size: 0.9375rem;
}
.profile-details div:last-child { padding-bottom: 0; }
.profile-details dt { font-weight: 700; }
.profile-details dd { word-break: auto-phrase; overflow-wrap: anywhere; }

.contact-section { background: var(--rose); border-block: 1px solid var(--rose-line); }
.contact-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; }
.contact-inner .section-intro { max-width: 47rem; }
.site-footer { padding-block: 2.25rem 1.5rem; }
.footer-main {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  padding-bottom: 1.5rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}
.footer-slogan { margin-top: 0.25rem; font-size: 0.875rem; color: var(--muted); }
.site-footer ul { flex-wrap: wrap; gap: 0 1.25rem; }
.site-footer small { color: var(--muted); font-size: 0.8125rem; }

@media (max-width: 62rem) {
  .desktop-nav { display: none; }
  .mobile-menu { display: block; }
  .mobile-menu summary {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-height: 2.75rem;
    padding-inline: 0.65rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 650;
    list-style: none;
  }
  .mobile-menu summary::-webkit-details-marker { display: none; }
  .menu-icon {
    width: 1rem;
    height: 0.75rem;
    border-block: 1.5px solid currentColor;
    display: grid;
    align-items: center;
  }
  .menu-icon::before { content: ""; border-top: 1.5px solid currentColor; }
  .mobile-menu[open] summary { background: var(--soft); }
  .mobile-menu nav {
    position: absolute;
    z-index: 2;
    inset: calc(100% + 0.35rem) 0 auto auto;
    width: min(21rem, 100%);
    padding: 0.5rem 0.85rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--white);
    box-shadow: 0 6px 20px #17171714;
  }
  .mobile-menu ul { display: block; }
  .mobile-menu li + li { border-top: 1px solid var(--line); }
  .mobile-menu a { width: 100%; padding-inline: 0.55rem; }
  .mobile-menu .button { margin-block: 0.45rem; }
}

@media (max-width: 52rem) {
  .hero { grid-template-columns: 1fr; gap: 2rem; }
  .hero-copy { padding: 0; }
  .hero-figure { width: min(100%, 35rem); }
  .slogan { font-size: clamp(2.35rem, 10.5vw, 3.8rem); }
  h1 { font-size: clamp(1.65rem, 7.6vw, 2.65rem); }
  .editorial { grid-template-columns: 1fr; }
}

@media (max-width: 42rem) {
  .header-inner { min-height: 4.1rem; }
  .hero { gap: 1.25rem; padding-block: 1.75rem 2.25rem; }
  .slogan { margin-bottom: 0.8rem; }
  .slogan::after { margin-top: 0.65rem; }
  .hero-lead { margin-top: 0.85rem; }
  .actions { margin-top: 1rem; }
  .hero-stage { padding: 2rem clamp(0.65rem, 3.5vw, 1.5rem) 0.85rem; }
  .stage-label { inset: 0.55rem auto auto 0.9rem; }
  #problem, #service, #how-it-works { padding-block: 2.75rem; }
  #service .editorial { gap: 1.4rem; }
  .problem-list, .flow-list { grid-template-columns: 1fr; gap: 1.15rem; margin-top: 1.45rem; }
  .flow-caption { display: grid; gap: 0.25rem; }
  .product-stage { padding: clamp(0.65rem, 3.5vw, 1.25rem); }
  .news-entry-with-photo { grid-template-columns: minmax(0, 1fr); }
  .news-photo { width: min(100%, 22rem); }
  .news-details { grid-template-columns: 1fr; gap: 0.65rem; }
  .footer-main { display: block; }
  .site-footer ul { margin-top: 0.7rem; }
}

@media (max-width: 25rem) {
  .actions .button { gap: 0.5rem; padding-inline: 0.7rem; }
}