:root {
  --deep: #082033;
  --ink: #172132;
  --muted: #647084;
  --line: #dce5ee;
  --white: #ffffff;
  --mist: #f4f8fb;
  --blue: #2866c7;
  --teal: #13868d;
  --green: #2d8f62;
  --amber: #c68b25;
  --coral: #c95d55;
  --shadow: 0 18px 46px rgba(10, 31, 49, 0.14);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

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

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

.section-pad {
  padding: 88px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(220, 229, 238, 0.9);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(8, 32, 51, 0.1);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 8px 24px rgba(8, 32, 51, 0.1);
}

.brand-mark img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.brand-text {
  display: grid;
  line-height: 1.05;
}

.brand-text strong {
  color: var(--deep);
  font-size: 0.95rem;
  letter-spacing: 0;
}

.brand-text em {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.76rem;
  font-style: normal;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #34435a;
  font-size: 0.94rem;
  font-weight: 800;
}

.nav-links a:hover {
  color: var(--blue);
}

.nav-main,
.btn {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-weight: 850;
}

.nav-main {
  padding: 0 16px;
  color: var(--white) !important;
  background: var(--deep);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--deep);
}

.course-hero {
  min-height: 84svh;
  display: grid;
  align-items: center;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(8, 32, 51, 0.97) 0%, rgba(8, 32, 51, 0.78) 45%, rgba(8, 32, 51, 0.24) 78%),
    linear-gradient(180deg, rgba(8, 32, 51, 0.1), rgba(8, 32, 51, 0.46)),
    url("imucet-hero.png") center right / cover no-repeat;
}

.hero-content {
  padding: 92px 0 100px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  color: var(--white);
  font-size: 4.35rem;
}

h2 {
  color: var(--deep);
  font-size: 3rem;
}

h3 {
  color: var(--deep);
  font-size: 1.14rem;
}

.hero-subtitle {
  max-width: 680px;
  margin: 24px 0 0;
  color: #d9e7f5;
  font-size: 1.18rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 34px 0 22px;
}

.btn {
  border: 1px solid transparent;
  padding: 0 20px;
  cursor: pointer;
  font-size: 0.96rem;
}

.btn-primary {
  color: var(--white);
  background: var(--blue);
  box-shadow: 0 14px 32px rgba(40, 102, 199, 0.28);
}

.btn-secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.1);
}

.btn-primary:hover,
.btn-secondary:hover {
  transform: translateY(-1px);
}

.full {
  width: 100%;
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-proof span {
  padding: 8px 11px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  color: #e4efff;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.88rem;
  font-weight: 800;
}

.signal-strip {
  background: #fbfcfe;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.signal-grid {
  min-height: 78px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  align-items: center;
  color: #657188;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-align: center;
  text-transform: uppercase;
}

.section-intro {
  max-width: 830px;
  margin-bottom: 34px;
}

.section-intro.narrow {
  max-width: 790px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-intro p,
.split p,
.institute-layout p,
.contact-copy p {
  color: var(--muted);
  font-size: 1.05rem;
}

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

.feature-grid article,
.course-steps article,
.track-grid article,
.institute-list article,
.contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 10px 28px rgba(10, 31, 49, 0.06);
}

.feature-grid article,
.track-grid article {
  padding: 24px;
}

.mini-icon {
  width: 40px;
  height: 40px;
  display: inline-grid;
  place-items: center;
  margin-bottom: 20px;
  border-radius: var(--radius);
  color: var(--white);
  background: var(--teal);
  font-weight: 900;
}

.feature-grid article:nth-child(2) .mini-icon {
  background: var(--blue);
}

.feature-grid article:nth-child(3) .mini-icon {
  background: var(--amber);
}

.feature-grid p,
.course-steps span,
.track-grid p,
.institute-list span {
  color: var(--muted);
}

.band {
  background: var(--mist);
}

.split {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: 54px;
  align-items: start;
}

.course-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.course-steps article {
  min-height: 190px;
  padding: 18px;
}

.course-steps b {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  border-radius: var(--radius);
  color: var(--white);
  background: var(--deep);
}

.course-steps strong,
.course-steps span,
.track-grid span,
.institute-list strong,
.institute-list span {
  display: block;
}

.future-section {
  background: #fffaf0;
  border-top: 1px solid #efe2c7;
  border-bottom: 1px solid #efe2c7;
}

.track-grid article {
  background: #ffffff;
}

.track-grid span {
  margin-bottom: 12px;
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.track-grid .active-track {
  border-color: rgba(19, 134, 141, 0.34);
  background: #f3fbfa;
}

.active-track span {
  color: var(--teal);
}

.institute-section {
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(8, 32, 51, 0.98), rgba(12, 63, 75, 0.96)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 80px);
}

.institute-section h2 {
  color: var(--white);
}

.institute-section .eyebrow {
  color: #f3c46d;
}

.institute-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 54px;
  align-items: center;
}

.institute-layout p {
  color: #d8e5f3;
}

.institute-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.institute-list article {
  padding: 20px;
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: none;
}

.institute-list strong {
  color: #ffffff;
}

.institute-list span {
  margin-top: 6px;
  color: #d8e5f3;
}

.contact-section {
  background: #f6f8fc;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.82fr 1fr;
  gap: 54px;
  align-items: start;
}

.contact-lines {
  display: grid;
  gap: 10px;
  margin-top: 24px;
  color: var(--blue);
  font-weight: 850;
}

.contact-form {
  padding: 24px;
}

.contact-form label {
  display: grid;
  gap: 7px;
  margin-bottom: 15px;
  color: #34435a;
  font-weight: 850;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 13px 14px;
  color: var(--ink);
  background: #fbfcff;
  font: inherit;
  outline: none;
}

input:focus,
textarea:focus {
  border-color: rgba(40, 102, 199, 0.48);
  box-shadow: 0 0 0 4px rgba(40, 102, 199, 0.11);
}

.form-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.site-footer {
  padding: 58px 0 24px;
  color: #c7d3e6;
  background: #061827;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.45fr repeat(3, 1fr);
  gap: 34px;
}

.footer-grid div {
  display: grid;
  gap: 9px;
  align-content: start;
}

.footer-grid strong,
.footer-brand .brand-text strong {
  color: #ffffff;
}

.footer-grid a:hover {
  color: #ffffff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 38px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: #93a6c0;
  font-size: 0.9rem;
}

.open {
  display: flex !important;
}

@media (max-width: 1100px) {
  h1 {
    font-size: 3.65rem;
  }

  .course-steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 900px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 74px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .nav-links a {
    padding: 12px 10px;
  }

  .nav-main {
    margin-top: 8px;
  }

  .course-hero {
    min-height: 78svh;
    background:
      linear-gradient(90deg, rgba(8, 32, 51, 0.95) 0%, rgba(8, 32, 51, 0.78) 58%, rgba(8, 32, 51, 0.36) 100%),
      linear-gradient(180deg, rgba(8, 32, 51, 0.12), rgba(8, 32, 51, 0.52)),
      url("imucet-hero.png") 58% center / cover no-repeat;
  }

  .hero-content {
    padding: 76px 0 86px;
  }

  h1 {
    font-size: 3.05rem;
  }

  h2 {
    font-size: 2.35rem;
  }

  .feature-grid,
  .split,
  .institute-layout,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .track-grid,
  .institute-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .signal-grid {
    grid-template-columns: repeat(3, 1fr);
    padding: 18px 0;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .section-pad {
    padding: 64px 0;
  }

  .brand-text em {
    display: none;
  }

  .course-hero {
    background:
      linear-gradient(180deg, rgba(8, 32, 51, 0.91), rgba(8, 32, 51, 0.74)),
      url("imucet-hero.png") 62% center / cover no-repeat;
  }

  h1 {
    font-size: 2.45rem;
  }

  h2 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.02rem;
  }

  .hero-actions,
  .footer-bottom {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .hero-proof {
    display: grid;
  }

  .signal-grid,
  .feature-grid,
  .course-steps,
  .track-grid,
  .institute-list,
  .contact-grid,
  .form-row,
  .footer-grid {
    grid-template-columns: 1fr;
  }
}