:root {
  --bg: #f5f7fb;
  --bg-muted: #eef2ff;
  --bg-panel: #ffffff;
  --text: #152235;
  --text-soft: #5d6a7d;
  --line: #d8deea;
  --indigo: #4256b5;
  --indigo-strong: #34449a;
  --bronze: #b38a4b;
  --bronze-soft: #eadbbc;
  --dark: #121821;
  --container: min(1080px, calc(100vw - 40px));
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans JP", sans-serif;
  line-height: 1.75;
}

a {
  color: inherit;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.topbar-inner {
  min-height: 62px;
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 10px 0;
}

.back-link {
  color: var(--indigo);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}

.back-link:hover {
  text-decoration: underline;
}

.mini-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.mini-nav a {
  text-decoration: none;
  font-size: 12px;
  font-family: "Inter", sans-serif;
  letter-spacing: 0.03em;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  color: #334155;
}

.mini-nav a.is-active {
  border-color: var(--indigo);
  color: var(--indigo);
  background: rgba(66, 86, 181, 0.08);
}

.section {
  padding: 76px 0;
}

.section-muted {
  background: var(--bg-muted);
}

.hero {
  background:
    radial-gradient(circle at top right, rgba(179, 138, 75, 0.18), transparent 36%),
    linear-gradient(180deg, #edf2fb, #f8fafc 54%, #ffffff);
  min-height: 78vh;
  display: grid;
  align-items: center;
}

.hero-grid,
.challenge-grid,
.reason-grid,
.program-grid,
.instructor-grid,
.relation-grid {
  display: grid;
  gap: 16px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--indigo);
  font-family: "Inter", sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.35;
}

h1 {
  font-size: clamp(28px, 4.8vw, 46px);
  font-weight: 800;
}

h2 {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  margin-bottom: 14px;
}

h3 {
  font-size: clamp(18px, 2.6vw, 24px);
  font-weight: 700;
  margin-bottom: 8px;
}

p,
li,
td,
th {
  font-size: clamp(15px, 2vw, 16px);
}

.hero-lead {
  margin: 16px 0;
  color: var(--text-soft);
}

.program-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--indigo-strong);
  margin: 0;
}

.program-subtitle {
  margin: 2px 0 20px;
  color: #64748b;
  font-family: "Inter", sans-serif;
  font-size: 13px;
}

.hero-visual {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(216, 222, 234, 0.9);
  border-radius: 20px;
  box-shadow: 0 18px 34px rgba(15, 23, 42, 0.08);
  padding: 20px;
  display: grid;
  gap: 12px;
}

.hero-step {
  border-radius: 14px;
  padding: 14px 16px;
  background: #ffffff;
  border: 1px solid var(--line);
}

.hero-step strong {
  display: block;
  color: var(--indigo);
  font-family: "Inter", sans-serif;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-step span {
  display: block;
  margin-top: 4px;
  color: var(--text);
  font-weight: 700;
}

.hero-step.accent {
  background: linear-gradient(180deg, rgba(234, 219, 188, 0.65), rgba(255, 255, 255, 0.96));
  border-color: rgba(179, 138, 75, 0.35);
}

.hero-arrow {
  justify-self: center;
  color: var(--bronze);
  font-size: 22px;
  line-height: 1;
}

.btn-primary,
.btn-secondary,
.btn-white,
.btn-outline {
  display: inline-block;
  min-height: 48px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  padding: 13px 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background: var(--indigo);
  color: #ffffff;
  box-shadow: 0 10px 22px rgba(66, 86, 181, 0.26);
}

.btn-primary:hover {
  background: var(--indigo-strong);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bronze);
  color: #ffffff;
  box-shadow: 0 8px 18px rgba(179, 138, 75, 0.24);
}

.btn-secondary:hover {
  background: #9e7842;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--indigo);
  border: 1px solid rgba(66, 86, 181, 0.35);
}

.btn-outline:hover {
  border-color: var(--indigo);
  transform: translateY(-1px);
}

.btn-white {
  background: #ffffff;
  color: var(--indigo);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.18);
}

.btn-white:hover {
  transform: translateY(-1px);
}

.number-card,
.reason-card,
.program-card,
.instructor-card {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.06);
}

.number-card {
  display: grid;
  gap: 8px;
}

.number-card span {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--bronze-soft);
  color: #8e6935;
  font-family: "Inter", sans-serif;
  font-weight: 800;
  font-size: 16px;
}

.reason-card h3,
.program-card h3 {
  color: var(--indigo-strong);
}

.metrics {
  display: grid;
  gap: 12px;
  margin-bottom: 16px;
}

.metrics div {
  background: #ffffff;
  border: 1px solid rgba(66, 86, 181, 0.16);
  border-radius: 12px;
  padding: 14px;
}

.metrics strong {
  display: block;
  color: var(--bronze);
  font-family: "Inter", sans-serif;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.05;
}

.metrics span {
  display: block;
  color: var(--text-soft);
  font-size: 13px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #ffffff;
}

table {
  width: 100%;
  border-collapse: collapse;
}

tbody th,
tbody td {
  padding: 12px;
  border-top: 1px solid var(--line);
  vertical-align: top;
}

tbody th {
  width: 24%;
  background: #f8fafc;
  text-align: left;
  font-weight: 700;
}

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

.check-list li {
  position: relative;
  padding-left: 30px;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(66, 86, 181, 0.12);
  box-shadow: inset 0 0 0 5px var(--indigo);
}

.instructor-grid.two-col {
  grid-template-columns: 1fr;
}

.instructor-photo {
  width: 100%;
  height: 320px;
  object-fit: contain;
  object-position: center center;
  background: linear-gradient(180deg, #ffffff, #f8fafc);
  border-radius: 12px;
  border: 2px solid rgba(66, 86, 181, 0.16);
  display: block;
  margin-bottom: 12px;
}

.instructor-card h3 {
  font-size: 20px;
}

.instructor-card h3 small {
  color: #64748b;
  font-size: 13px;
  font-weight: 500;
}

.instructor-card .role {
  margin-top: 0;
  color: var(--bronze);
  font-weight: 700;
  font-size: 14px;
}

.relation-section {
  background: linear-gradient(180deg, #eef2ff, #f7f9ff);
}

.section-lead {
  color: var(--text-soft);
  margin-top: 0;
}

.relation-grid-three {
  margin-bottom: 16px;
}

.relation-card {
  border-radius: 14px;
  padding: 18px;
  border: 1px solid var(--line);
}

.relation-card.dark {
  background: var(--dark);
  color: #f8fafc;
  border-color: #2f3b4a;
}

.relation-card.dark h3 {
  color: #eadbbc;
}

.relation-card.middle {
  background: linear-gradient(180deg, rgba(66, 86, 181, 0.12), rgba(255, 255, 255, 0.96));
  color: var(--text);
  border-color: rgba(66, 86, 181, 0.2);
}

.relation-card.middle h3 {
  color: var(--indigo-strong);
}

.relation-card.light {
  background: #ffffff;
  color: var(--text);
  border-color: rgba(66, 86, 181, 0.16);
}

.relation-card.light h3 {
  color: var(--indigo);
}

.relation-arrow {
  justify-self: center;
  align-self: center;
  color: var(--bronze);
  font-size: 28px;
  font-weight: 800;
}

.relation-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.final-cta {
  background: linear-gradient(180deg, #2c3f97, #4256b5);
  color: #ffffff;
  text-align: center;
}

.final-cta p,
.final-company {
  color: #ffffff;
}

.final-company {
  margin: 16px 0 8px;
  font-size: 13px;
  opacity: 0.92;
}

.final-company a {
  color: #ffffff;
}

.final-copyright {
  margin: 6px 0 0;
  font-size: 12px;
  opacity: 0.88;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 769px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
  }

  .challenge-grid,
  .reason-grid,
  .program-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .instructor-grid.two-col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .relation-grid-three {
    grid-template-columns: 1fr auto 1fr auto 1fr;
    align-items: stretch;
  }
}

@media (max-width: 768px) {
  .topbar-inner {
    align-items: flex-start;
  }

  .mini-nav {
    width: 100%;
  }

  .btn-primary,
  .btn-secondary,
  .btn-white,
  .btn-outline {
    width: 100%;
    text-align: center;
  }

  .relation-actions {
    display: grid;
  }
}