:root {
  --bg: #eef2e9;
  --bg-soft: #f8fbf4;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #ffffff;
  --text: #1d2430;
  --muted: #5f6c78;
  --line: rgba(29, 36, 48, 0.11);
  --accent: #0f766e;
  --accent-strong: #0c5954;
  --accent-soft: #dff5ef;
  --highlight: #ca8a04;
  --shadow: 0 24px 70px rgba(17, 24, 39, 0.1);
  --radius-lg: 28px;
  --radius-md: 20px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.11), transparent 30%),
    radial-gradient(circle at top right, rgba(202, 138, 4, 0.1), transparent 28%),
    linear-gradient(180deg, #f7f7ef 0%, #eef2e9 50%, #f9fbf7 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 247, 239, 0.76);
  border-bottom: 1px solid rgba(29, 36, 48, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  color: white;
  background: linear-gradient(135deg, var(--accent) 0%, #15324a 100%);
  box-shadow: 0 16px 30px rgba(15, 118, 110, 0.24);
}

.nav-links {
  display: flex;
  gap: 26px;
  color: var(--muted);
  font-size: 0.95rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 700;
  color: white;
  background: linear-gradient(135deg, var(--accent) 0%, #0b5a79 100%);
  box-shadow: 0 18px 40px rgba(11, 90, 121, 0.24);
}

.button-small {
  min-height: 44px;
  padding: 0 18px;
  font-size: 0.92rem;
}

.button-outline {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid rgba(15, 118, 110, 0.2);
  box-shadow: none;
}

.button-ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(29, 36, 48, 0.08);
  box-shadow: none;
}

.hero {
  padding: 72px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, 0.92fr);
  gap: 44px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 16px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.hero h1,
.section-heading h2,
.showcase-copy h2,
.architecture-grid h2,
.contact-card h2 {
  margin: 0;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.hero h1 {
  font-size: clamp(2.35rem, 5.2vw, 4.45rem);
  max-width: 13ch;
}

.hero-text,
.section-heading p,
.showcase-copy p,
.architecture-grid p,
.contact-card p,
.feature-card p,
.problem-card p,
.timeline-item p,
.faq-item p,
.showcase-card p {
  color: var(--muted);
  line-height: 1.9;
}

.hero-text {
  margin-top: 24px;
  font-size: 1.03rem;
  max-width: 42rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.hero-points {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.hero-points li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
}

.hero-points li::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--highlight), #f59e0b);
  box-shadow: 0 0 0 8px rgba(202, 138, 4, 0.12);
}

.hero-panel {
  position: relative;
  display: grid;
  gap: 18px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.75);
  border-radius: 34px;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.88), rgba(248, 251, 244, 0.7)),
    linear-gradient(135deg, rgba(15, 118, 110, 0.07), rgba(11, 90, 121, 0.08));
  box-shadow: var(--shadow);
  overflow: hidden;
  justify-items: stretch;
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: auto -50px -60px auto;
  width: 180px;
  height: 180px;
  border-radius: 999px;
  background: rgba(202, 138, 4, 0.15);
}

.hero-card,
.signal-box,
.problem-card,
.feature-card,
.timeline-item,
.showcase-card,
.architecture-card,
.faq-item,
.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: 0 16px 34px rgba(17, 24, 39, 0.06);
}

.hero-card {
  padding: 22px;
}

.hero-card-mid {
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.12), rgba(255, 255, 255, 0.85));
}

.hero-card,
.signal-box {
  width: 100%;
}

.card-label {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  background: rgba(15, 118, 110, 0.09);
  color: var(--accent);
}

.hero-card strong,
.signal-box strong {
  display: block;
  margin-top: 8px;
  font-size: 1.18rem;
}

.hero-card p,
.signal-box span {
  margin: 8px 0 0;
  color: var(--muted);
}

.signal-box {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 22px;
  background: var(--surface-strong);
}

.trust-band {
  padding: 8px 0 0;
}

.trust-items {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 24px;
  border: 1px solid rgba(29, 36, 48, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
}

.trust-items p {
  margin: 0;
  font-weight: 700;
}

.trust-items ul {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
}

.section {
  padding: 96px 0;
}

.section-alt {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.54), rgba(255, 255, 255, 0.76)),
    radial-gradient(circle at right top, rgba(15, 118, 110, 0.08), transparent 32%);
}

.section-accent {
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.96), rgba(11, 90, 121, 0.92)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0));
  color: white;
}

.section-accent .eyebrow,
.section-accent p {
  color: rgba(255, 255, 255, 0.8);
}

.section-heading {
  max-width: 820px;
}

.section-heading h2,
.showcase-copy h2,
.architecture-grid h2,
.contact-card h2 {
  font-size: clamp(2rem, 4.2vw, 3.35rem);
}

.problem-grid,
.feature-grid,
.showcase-grid,
.faq-list {
  display: grid;
  gap: 22px;
  margin-top: 40px;
}

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

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

.feature-card-wide {
  grid-column: span 2;
}

.problem-card,
.feature-card,
.showcase-card,
.faq-item {
  padding: 28px;
}

.feature-number,
.timeline-step {
  display: inline-block;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.feature-card h3,
.problem-card h3,
.timeline-item h3,
.showcase-card h3,
.faq-item h3 {
  margin: 14px 0 10px;
  font-size: 1.28rem;
}

.feature-card ul,
.architecture-points {
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.timeline {
  display: grid;
  gap: 18px;
  margin-top: 42px;
}

.workflow-visual {
  margin: 40px 0 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 251, 244, 0.92)),
    linear-gradient(135deg, rgba(15, 118, 110, 0.04), rgba(11, 90, 121, 0.04));
  box-shadow: 0 18px 40px rgba(17, 24, 39, 0.06);
}

.workflow-visual img {
  display: block;
  width: min(100%, 560px);
  margin: 0 auto;
  border-radius: 18px;
}

.timeline-four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.timeline-vertical {
  grid-template-columns: 1fr;
  margin-top: 0;
}

.timeline-item {
  padding: 28px;
}

.timeline-item-emphasis {
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.11), rgba(255, 255, 255, 0.9));
}

.showcase {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 28px;
  align-items: start;
}

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

.showcase-card {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: none;
}

.showcase-card p {
  color: rgba(255, 255, 255, 0.78);
}

.architecture-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.85fr);
  gap: 28px;
  align-items: center;
}

.architecture-card {
  padding: 28px;
  background: var(--surface-strong);
}

.contact-section {
  padding-top: 0;
}

.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 320px);
  gap: 28px;
  align-items: center;
  padding: 34px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(246, 255, 252, 0.9)),
    linear-gradient(135deg, rgba(15, 118, 110, 0.08), rgba(11, 90, 121, 0.08));
}

.contact-actions {
  display: grid;
  gap: 14px;
}

.contact-note {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}

@media (max-width: 1080px) {
  .hero-grid,
  .showcase,
  .architecture-grid,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .problem-grid,
  .feature-grid,
  .showcase-grid,
  .timeline-four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-card-wide {
    grid-column: span 2;
  }

  .hero h1 {
    max-width: none;
  }
}

@media (max-width: 760px) {
  .nav {
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.86rem;
  }

  .hero {
    padding-top: 46px;
  }

  .hero-panel {
    padding: 20px;
  }

  .hero-card-mid,
  .hero-card-end {
    transform: none;
  }

  .signal-box,
  .problem-grid,
  .feature-grid,
  .showcase-grid,
  .faq-list,
  .timeline-four,
  .timeline-vertical {
    grid-template-columns: 1fr;
  }

  .feature-card-wide {
    grid-column: auto;
  }

  .trust-items {
    align-items: flex-start;
    border-radius: 26px;
  }

  .trust-items,
  .trust-items ul {
    flex-direction: column;
  }

  .section {
    padding: 74px 0;
  }

  .hero h1 {
    font-size: clamp(2.1rem, 10vw, 3.2rem);
  }
}

@page {
  size: A4;
  margin: 12mm;
}

@media print {
  html {
    scroll-behavior: auto;
  }

  body {
    background: #f7f7ef;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .site-header {
    position: static;
    background: rgba(247, 247, 239, 0.96);
  }

  .hero,
  .section {
    padding: 56px 0;
  }

  .brand-mark,
  .button,
  .hero-panel,
  .hero-card,
  .signal-box,
  .problem-card,
  .feature-card,
  .timeline-item,
  .showcase-card,
  .faq-item,
  .contact-card,
  .workflow-visual,
  .trust-items {
    box-shadow: none;
  }

  .hero-panel::after {
    display: none;
  }

  .hero-grid,
  .showcase,
  .architecture-grid,
  .contact-card,
  .workflow-visual,
  .problem-card,
  .feature-card,
  .timeline-item,
  .showcase-card,
  .faq-item {
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .workflow-visual img {
    width: min(100%, 500px);
  }
}