:root {
  --ink: #0a2147;
  --muted: #52637a;
  --blue: #1267d8;
  --blue-dark: #073f91;
  --cyan: #22d3ee;
  --red: #d4203c;
  --paper: #ffffff;
  --soft: #f4f9ff;
  --line: #d9e7f6;
  --shadow: 0 22px 60px rgba(11, 65, 128, 0.13);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 82% 16%, rgba(34, 211, 238, 0.17), transparent 26rem),
    linear-gradient(180deg, #f8fcff 0%, #ffffff 34%, #f5f9ff 100%);
  letter-spacing: 0;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(217, 231, 246, 0.88);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
}

.nav {
  width: min(1180px, calc(100% - 40px));
  min-height: 82px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-logo {
  width: auto;
}

.brand-lockup {
  display: grid;
  grid-template-columns: 74px auto auto;
  align-items: center;
  gap: 10px;
}

.lockup-icon {
  width: 74px;
  height: 74px;
}

.lockup-main {
  color: #4a95d8;
  font-size: 4.1rem;
  font-weight: 800;
  line-height: 0.86;
}

.lockup-name {
  color: #333;
  font-size: 1.38rem;
  line-height: 1.14;
  font-weight: 400;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  border-radius: 999px;
  padding: 10px 15px;
  color: #294260;
  font-size: 0.95rem;
  font-weight: 700;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--blue-dark);
  background: #eaf5ff;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
}

.menu-toggle svg {
  width: 22px;
  height: 22px;
}

.wrap {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: calc(100vh - 82px);
  display: grid;
  align-items: center;
  padding: 72px 0 42px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(248, 252, 255, 0.98) 0%, rgba(248, 252, 255, 0.94) 38%, rgba(248, 252, 255, 0.4) 72%, rgba(248, 252, 255, 0.1) 100%),
    url("assets/ai-hero.png") center right / cover no-repeat;
}

.hero .wrap {
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.72fr);
  gap: 56px;
  align-items: center;
}

.kicker {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 24px;
  font-size: clamp(2.15rem, 3.5vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(1.65rem, 2.55vw, 2.45rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.28rem;
  line-height: 1.25;
  letter-spacing: 0;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.8vw, 1.28rem);
  line-height: 1.65;
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-top: 30px;
}

.button,
.course-link {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  padding: 13px 22px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), #17b8d8);
  box-shadow: 0 14px 32px rgba(18, 103, 216, 0.24);
  font-weight: 800;
}

.button.secondary {
  color: var(--blue-dark);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: none;
}

.hero-panel {
  border: 1px solid rgba(217, 231, 246, 0.92);
  border-radius: var(--radius);
  padding: 26px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
}

.hero-mark {
  width: min(280px, 70%);
  margin: 0 auto 16px;
}

.hero-robot {
  width: min(310px, 82%);
  aspect-ratio: 1;
  margin: 0 auto 16px;
  border: 1px solid rgba(217, 231, 246, 0.85);
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: 0 18px 44px rgba(18, 103, 216, 0.14);
}

.open-note {
  width: fit-content;
  margin: 0 auto 24px;
  border: 1px solid rgba(34, 211, 238, 0.42);
  border-radius: 999px;
  padding: 9px 15px;
  color: var(--blue-dark);
  background: rgba(234, 245, 255, 0.9);
  font-size: 0.95rem;
  font-weight: 850;
  text-align: center;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.stat,
.info-card,
.track-card,
.course-card,
.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.9);
}

.stat {
  padding: 16px;
}

.stat strong {
  display: block;
  color: var(--blue-dark);
  font-size: 1.55rem;
}

.stat span {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
}

.section {
  padding: 86px 0;
}

.section.alt {
  background: linear-gradient(180deg, rgba(237, 247, 255, 0.75), rgba(255, 255, 255, 0.95));
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 36px;
  align-items: end;
  margin-bottom: 34px;
}

.section-head .lead {
  max-width: 500px;
}

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

.registration-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.registration-summary .info-card {
  display: flex;
  flex-direction: column;
}

.registration-summary .course-link {
  width: fit-content;
  margin-top: auto;
}

.eligibility-card {
  margin-top: 18px;
}

.eligibility-card .detail-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 14px;
}

.eligibility-card .detail-list li {
  border-top: 1px solid rgba(217, 231, 246, 0.9);
}

.info-card,
.track-card,
.course-card,
.contact-card {
  padding: 24px;
  box-shadow: 0 16px 38px rgba(9, 46, 110, 0.07);
}

.info-card p,
.track-card p,
.course-card p,
.contact-card p {
  color: var(--muted);
  line-height: 1.65;
}

.icon {
  display: inline-grid;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  font-weight: 900;
}

.page-hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 58px;
  background:
    linear-gradient(90deg, rgba(248, 252, 255, 0.98), rgba(248, 252, 255, 0.78)),
    url("assets/ai-hero.png") center right / cover no-repeat;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(248, 252, 255, 0.98) 0%, rgba(248, 252, 255, 0.93) 56%, rgba(248, 252, 255, 0.64) 100%);
}

.page-hero .wrap {
  position: relative;
}

.page-hero h1 {
  font-size: clamp(2.15rem, 3.5vw, 3.5rem);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(310px, 0.55fr);
  gap: 28px;
  align-items: start;
}

.detail-list,
.clean-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.detail-list li,
.clean-list li {
  position: relative;
  margin: 0;
  padding: 11px 0 11px 24px;
  color: var(--muted);
  border-top: 1px solid rgba(217, 231, 246, 0.78);
  line-height: 1.5;
}

.detail-list li::before,
.clean-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.2rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.timeline-date {
  color: var(--blue-dark);
  font-weight: 900;
}

.timeline-item p {
  margin-bottom: 0;
  color: var(--muted);
}

.learning-intro,
.tools-band,
.resource-head {
  margin: 34px 0 22px;
}

.learning-intro {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  background: #fff;
  color: var(--muted);
}

.learning-intro strong {
  color: var(--blue-dark);
}

.track-step,
.tag {
  color: var(--blue);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.course-card {
  display: flex;
  flex-direction: column;
}

.course-card .course-link {
  width: fit-content;
  margin-top: auto;
  min-height: 42px;
  padding: 11px 18px;
  font-size: 0.94rem;
}

.tools-band {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 14px;
  color: var(--blue-dark);
  background: #fff;
  font-weight: 800;
}

.small {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.6;
}

.notice {
  border-left: 4px solid var(--red);
  padding: 18px 20px;
  border-radius: 0 var(--radius) var(--radius) 0;
  background: #fff4f6;
  color: #6b2430;
  line-height: 1.65;
}

.center-card {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.site-footer {
  color: var(--ink);
  border-top: 1px solid var(--line);
  background: #ffffff;
}

.footer-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 44px 0;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: 22px;
  align-items: start;
}

.footer-inner > div:first-child {
  grid-row: 1 / 3;
}

.footer-logo {
  width: auto;
  text-decoration: none;
}

.footer-lockup {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-lockup > span {
  display: flex;
  height: 72px;
  flex-direction: column;
  justify-content: space-between;
}

.footer-lockup-icon {
  width: 104px;
  height: 104px;
}

.footer-lockup-main {
  display: block;
  color: #4a95d8;
  font-size: 3.35rem;
  font-weight: 800;
  line-height: 0.7;
}

.footer-lockup-name {
  display: block;
  color: #333;
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1.08;
}

.footer-links {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  font-weight: 750;
}

.footer-links a:hover,
.footer-contact a:hover {
  color: var(--blue);
}

.footer-legal {
  margin: 0;
  color: var(--muted);
}

.footer-legal {
  grid-column: 2;
  grid-row: 2;
  justify-self: end;
  margin-top: 6px;
  text-align: right;
}

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav-links {
    position: absolute;
    left: 20px;
    right: 20px;
    top: 76px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: var(--shadow);
  }

  .nav-links.open {
    display: flex;
  }

  .brand-lockup {
    grid-template-columns: 58px auto auto;
    gap: 8px;
  }

  .lockup-icon {
    width: 58px;
    height: 58px;
  }

  .lockup-main {
    font-size: 3.1rem;
  }

  .lockup-name {
    display: block;
    font-size: 0.82rem;
    line-height: 1.08;
  }

  .hero-grid,
  .split,
  .section-head {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 22px;
  }

  .footer-inner > div:first-child,
  .footer-links,
  .footer-legal {
    grid-column: auto;
    grid-row: auto;
    justify-self: auto;
  }

  .hero-grid,
  .section-head {
    display: block;
  }

  .hero-panel {
    margin-top: 36px;
  }

  .card-grid,
  .track-grid,
  .course-grid,
  .registration-summary,
  .eligibility-card .detail-list,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-links,
  .footer-legal {
    justify-content: flex-start;
    text-align: left;
  }
}

@media (max-width: 560px) {
  .wrap,
  .nav,
  .footer-inner {
    width: min(100% - 28px, 1180px);
  }

  .brand-lockup {
    grid-template-columns: 42px auto auto;
    gap: 7px;
  }

  .lockup-icon {
    width: 42px;
    height: 42px;
  }

  .lockup-main {
    font-size: 2.2rem;
  }

  .lockup-name {
    font-size: 0.56rem;
    line-height: 1.08;
  }

  .footer-lockup {
    gap: 10px;
  }

  .footer-lockup-icon {
    width: 64px;
    height: 64px;
  }

  .footer-lockup > span {
    height: 48px;
  }

  .footer-lockup-main {
    font-size: 2.55rem;
  }

  .footer-lockup-name {
    font-size: 0.58rem;
  }

  .footer-links {
    gap: 12px 18px;
  }

  .hero,
  .section,
  .page-hero {
    padding-top: 54px;
    padding-bottom: 54px;
  }

  h1 {
    font-size: clamp(2.65rem, 16vw, 4.1rem);
  }

  .stats,
  .timeline-item {
    grid-template-columns: 1fr;
  }
}