:root {
  --brand-blue: #5d8fef;
  --brand-blue-deep: #346fd7;
  --brand-blue-soft: #dceaff;
  --brand-cyan: #74c7dd;
  --brand-mint: #79cdb9;
  --mist-blue: #eef6ff;
  --surface: #ffffff;
  --surface-soft: #f3f6fc;
  --text-primary: #17233c;
  --text-secondary: #596a82;
  --text-tertiary: #8c9ab2;
  --border: #e1e7f0;
  --shadow: 0 18px 50px rgba(69, 105, 145, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: linear-gradient(180deg, #eef6ff 0%, #f8fbff 42%, #ffffff 100%);
  color: var(--text-primary);
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.7;
}

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

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand-logo {
  width: 92px;
  height: 92px;
  border-radius: 22px;
  object-fit: contain;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-nav a {
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 15px;
  padding: 8px 14px;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: var(--brand-blue-soft);
  color: var(--brand-blue-deep);
  outline: none;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  font: inherit;
  padding: 8px 14px;
}

.hero,
.section,
.notice-section {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  align-items: center;
  gap: 56px;
  min-height: calc(100vh - 74px);
  padding: 54px 0 72px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brand-blue-deep);
  font-size: 15px;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 24px;
  font-size: clamp(42px, 7vw, 78px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.22;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.35;
}

.hero-text {
  max-width: 620px;
  color: var(--text-secondary);
  font-size: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 16px;
  font-weight: 700;
  padding: 12px 22px;
}

.primary-action {
  background: linear-gradient(100deg, var(--brand-blue) 0%, var(--brand-cyan) 100%);
  color: #ffffff;
  box-shadow: 0 16px 32px rgba(93, 143, 239, 0.22);
}

.secondary-action {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.78);
  color: var(--text-secondary);
}

.primary-action:focus-visible,
.secondary-action:focus-visible,
.nav-toggle:focus-visible {
  outline: 3px solid rgba(93, 143, 239, 0.28);
  outline-offset: 3px;
}

.hero-visual {
  border: 1px solid rgba(225, 231, 240, 0.9);
  border-radius: 32px;
  background:
    radial-gradient(circle at 18% 18%, rgba(116, 199, 221, 0.26), transparent 32%),
    linear-gradient(150deg, #ffffff 0%, #eef6ff 100%);
  box-shadow: var(--shadow);
  padding: clamp(22px, 4vw, 44px);
}

.hero-visual img {
  width: 100%;
  max-height: 520px;
  object-fit: contain;
}

.section {
  padding: 84px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.section-heading p:not(.eyebrow),
.section p,
.notice-section p,
address {
  color: var(--text-secondary);
}

.feature-grid,
.policy-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-grid article,
.policy-grid article {
  min-height: 210px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.86);
  padding: 26px;
}

.feature-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  min-height: 30px;
  border-radius: 999px;
  background: var(--brand-blue-soft);
  color: var(--brand-blue-deep);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 24px;
}

.split-section,
.mini-program,
.about-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 1.1fr);
  align-items: center;
  gap: 34px;
}

.split-section {
  border: 1px solid rgba(93, 143, 239, 0.2);
  border-radius: 32px;
  background: linear-gradient(135deg, #ffffff 0%, #eef6ff 100%);
  box-shadow: var(--shadow);
  margin-bottom: 84px;
  padding: clamp(30px, 5vw, 56px);
}

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

.benefit-list li {
  border: 1px solid rgba(93, 143, 239, 0.18);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 14px 18px;
}

.notice-section {
  border-radius: 28px;
  background: #17233c;
  color: #ffffff;
  margin-bottom: 56px;
  padding: clamp(30px, 5vw, 46px);
}

.notice-section p {
  max-width: 920px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.78);
}

.mini-program,
.about-section {
  border-top: 1px solid var(--border);
}

.mini-program-entry {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
  object-fit: contain;
}

address {
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
  font-style: normal;
  padding: 28px;
}

.site-footer {
  width: min(1160px, calc(100% - 40px));
  border-top: 1px solid var(--border);
  color: var(--text-tertiary);
  font-size: 14px;
  margin: 34px auto 0;
  padding: 34px 0 44px;
}

.footer-logo {
  width: 118px;
  height: 118px;
  border-radius: 24px;
  object-fit: contain;
  margin-bottom: 16px;
}

.site-footer p {
  margin-bottom: 8px;
}

.site-footer a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.96);
    padding: 8px;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px 14px;
  }

  .hero,
  .split-section,
  .mini-program,
  .about-section {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 34px;
    min-height: auto;
    padding-top: 42px;
  }

  .feature-grid,
  .policy-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .site-header,
  .hero,
  .section,
  .notice-section,
  .site-footer {
    width: min(100% - 28px, 1160px);
  }

  .brand {
    font-size: 18px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .primary-action,
  .secondary-action {
    width: 100%;
  }

  .feature-grid,
  .policy-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid article,
  .policy-grid article {
    min-height: auto;
  }

  .section {
    padding: 58px 0;
  }
}