:root {
  --bt-navy: #0a3f5f;
  --bt-navy-dark: #07324c;
  --bt-blue: #0c61a9;
  --bt-sky: #32abc2;
  --bt-orange: #f47a0b;
  --bt-orange-soft: #ffc48f;
  --bt-text: #0a3f5f;
  --bt-muted: #4f5660;
  --bt-border: #dfe5eb;
  --bt-surface: #ffffff;
  --bt-soft: #f4f6f8;
  --bt-strip: #dce5e8;
  --bt-radius: 8px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #fff;
  color: var(--bt-text);
  font-family: Roboto, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

a {
  color: inherit;
}

.bt-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: 114px;
  background: #fff;
  border-bottom: 1px solid var(--bt-border);
  display: flex;
  align-items: center;
  gap: 34px;
  padding: 0 36px;
}

.bt-brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.bt-brand-logo {
  width: 190px;
  height: auto;
}

.bt-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 34px;
}

.bt-nav a {
  color: var(--bt-navy-dark);
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

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

.bt-header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.bt-icon-link,
.bt-menu-toggle {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  background: transparent;
  color: var(--bt-navy-dark);
  cursor: pointer;
}

.bt-login {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 26px;
  border: 2px solid var(--bt-blue);
  border-radius: 999px;
  color: var(--bt-blue);
  font-weight: 700;
  text-decoration: none;
}

.bt-login:hover {
  background: var(--bt-blue);
  color: #fff;
}

.bt-menu-toggle {
  display: none;
}

.bt-mobile-menu {
  position: fixed;
  inset: 114px 0 auto 0;
  z-index: 49;
  display: none;
  flex-direction: column;
  background: #fff;
  border-bottom: 1px solid var(--bt-border);
  box-shadow: 0 18px 40px rgba(7, 50, 76, 0.12);
}

.bt-mobile-menu.is-open {
  display: flex;
}

.bt-mobile-menu a {
  padding: 16px 28px;
  color: var(--bt-navy-dark);
  font-weight: 700;
  text-decoration: none;
  border-top: 1px solid var(--bt-border);
}

.bt-hero {
  min-height: 600px;
  display: grid;
  grid-template-columns: minmax(480px, 46%) minmax(0, 54%);
  background: #f5f7f8;
  overflow: hidden;
}

.bt-hero-copy {
  position: relative;
  min-height: 600px;
  background: var(--bt-navy);
  color: #fff;
  padding: 150px 64px 96px 8vw;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.bt-hero-copy::after {
  content: "";
  position: absolute;
  top: 0;
  right: -92px;
  width: 138px;
  height: 100%;
  background: linear-gradient(90deg, var(--bt-orange) 0 32%, rgba(244, 122, 11, 0.32) 32% 55%, rgba(255,255,255,0.84) 55% 100%);
  transform: skewX(-13deg);
  transform-origin: top;
  pointer-events: none;
}

.bt-eyebrow,
.bt-kicker {
  margin: 0 0 20px;
  color: inherit;
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
}

.bt-hero h1 {
  margin: 0 0 18px;
  color: #fff;
  font-size: 48px;
  line-height: 1.14;
  font-weight: 900;
}

.bt-hero-points {
  list-style: none;
  display: grid;
  gap: 4px;
  margin: 0 0 34px;
  padding: 0;
  font-size: 21px;
}

.bt-hero-points li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.bt-hero-points iconify-icon {
  color: #55c96d;
  flex: 0 0 auto;
  margin-top: 2px;
}

.bt-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.bt-primary-btn,
.bt-secondary-btn,
.bt-band-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

.bt-primary-btn {
  background: #1b73b7;
  color: #fff;
}

.bt-primary-btn:hover {
  background: #1261a0;
}

.bt-secondary-btn {
  border: 2px solid rgba(255,255,255,0.72);
  color: #fff;
}

.bt-secondary-btn:hover {
  background: rgba(255,255,255,0.12);
}

.bt-hero-media {
  position: relative;
  min-height: 600px;
}

.bt-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.35), rgba(255,255,255,0));
  pointer-events: none;
}

.bt-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.bt-feature-strip {
  min-height: 74px;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-items: center;
  gap: 22px;
  padding: 14px max(28px, 12vw);
  background: var(--bt-strip);
  border-bottom: 8px solid var(--bt-orange-soft);
}

.bt-feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--bt-navy-dark);
  font-size: 18px;
  line-height: 1.15;
  font-weight: 500;
}

.bt-feature-item span {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--bt-navy);
  color: #fff;
  flex: 0 0 auto;
}

.bt-intro-panel,
.bt-section,
.bt-faq {
  max-width: 1170px;
  margin: 0 auto;
  padding: 56px 24px;
}

.bt-intro-panel {
  margin-top: 28px;
  padding-top: 0;
  padding-bottom: 28px;
  background: #f4f5f6;
  border-radius: var(--bt-radius);
}

.bt-intro-panel h2 {
  margin: 0 0 24px;
  padding: 0 24px;
  text-align: center;
  color: var(--bt-navy);
  font-size: 36px;
  line-height: 1.16;
  font-weight: 900;
}

.bt-intro-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px;
  padding: 0 20px 8px;
}

.bt-intro-grid p {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 0;
  color: var(--bt-navy-dark);
  font-size: 18px;
  line-height: 1.5;
}

.bt-intro-grid iconify-icon {
  color: var(--bt-navy);
  flex: 0 0 auto;
}

.bt-section-heading {
  text-align: center;
  margin-bottom: 38px;
}

.bt-section-heading h2,
.bt-faq h2 {
  margin: 0;
  color: var(--bt-navy);
  font-size: 38px;
  line-height: 1.14;
  font-weight: 900;
}

.bt-section-heading p:not(.bt-kicker) {
  max-width: 790px;
  margin: 14px auto 0;
  color: var(--bt-muted);
  font-size: 20px;
}

.bt-kicker {
  color: var(--bt-blue);
  font-weight: 700;
}

.bt-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: end;
  padding: 0 0 22px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--bt-border);
}

.bt-filter-bar label {
  display: grid;
  gap: 6px;
  color: var(--bt-blue);
  font-size: 15px;
  font-weight: 500;
}

.bt-filter-bar select {
  min-width: 190px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: #fff;
  color: var(--bt-blue);
  font: inherit;
  font-weight: 500;
  padding: 8px 28px 8px 0;
  cursor: pointer;
}

.bt-filter-bar select:focus {
  outline: none;
  border-bottom-color: var(--bt-blue);
}

.bt-course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.bt-course-card,
.bt-type-card,
.bt-results-grid article,
.bt-resource-card,
.bt-credential-card,
.bt-faq details {
  background: var(--bt-surface);
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius);
}

.bt-course-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 430px;
}

.bt-course-card.is-hidden,
.bt-resource-card.is-hidden {
  display: none;
}

.bt-card-image {
  position: relative;
  display: block;
  height: 164px;
  overflow: hidden;
  text-decoration: none;
}

.bt-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.bt-course-card:hover .bt-card-image img {
  transform: scale(1.04);
}

.bt-card-image::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 10px;
  background: var(--bt-orange);
}

.bt-card-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  background: rgba(255,255,255,0.9);
  color: var(--bt-muted);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
}

.bt-card-body {
  padding: 26px 24px 24px;
  display: flex;
  flex: 1;
  flex-direction: column;
}

.bt-card-type {
  margin: 0 0 8px;
  color: var(--bt-navy);
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
}

.bt-card-body h3 {
  margin: 0 0 10px;
  color: var(--bt-navy-dark);
  font-size: 20px;
  line-height: 1.32;
  font-weight: 900;
}

.bt-card-body h3 a {
  text-decoration: none;
}

.bt-card-body p {
  margin: 0;
  color: var(--bt-muted);
  font-size: 16px;
}

.bt-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 20px;
  color: var(--bt-blue);
  font-weight: 700;
  text-decoration: none;
}

.bt-empty-state {
  margin: 28px 0 0;
  padding: 22px;
  background: #f7f8fa;
  border: 1px dashed var(--bt-border);
  border-radius: var(--bt-radius);
  color: var(--bt-muted);
  text-align: center;
}

.bt-plan-band {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 28px;
  margin: 22px 0 0;
  padding: 64px max(28px, 16vw);
  background: var(--bt-navy);
  color: #fff;
}

.bt-plan-band p {
  margin: 0 0 8px;
  font-size: 22px;
}

.bt-plan-band h2 {
  margin: 0;
  font-size: 36px;
  line-height: 1.16;
  font-weight: 900;
}

.bt-band-btn {
  min-width: 280px;
  border: 2px solid #3c91d3;
  background: #fff;
  color: var(--bt-blue);
}

.bt-type-grid,
.bt-results-grid,
.bt-resource-grid,
.bt-credential-section {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.bt-type-card {
  overflow: hidden;
}

.bt-type-card img {
  width: 100%;
  height: 192px;
  object-fit: cover;
}

.bt-type-card div {
  padding: 20px 28px 30px;
}

.bt-type-card h3 {
  margin: 0 0 10px;
  color: var(--bt-navy-dark);
  font-size: 22px;
  line-height: 1.25;
  text-align: center;
}

.bt-type-card ul {
  margin: 0;
  padding-left: 20px;
  color: var(--bt-muted);
  font-size: 17px;
}

.bt-results {
  padding: 56px 24px 78px;
  background: var(--bt-soft);
}

.bt-results .bt-section-heading,
.bt-results-grid {
  max-width: 1170px;
  margin-left: auto;
  margin-right: auto;
}

.bt-results-grid article {
  min-height: 270px;
  text-align: center;
  overflow: hidden;
}

.bt-result-icon {
  min-height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bt-navy);
  color: #fff;
}

.bt-results-grid h3 {
  margin: 20px 18px 8px;
  color: var(--bt-navy-dark);
  font-size: 21px;
  font-weight: 900;
}

.bt-results-grid p {
  margin: 0 auto 24px;
  max-width: 290px;
  color: var(--bt-muted);
  font-size: 17px;
}

.bt-map-visual {
  min-height: 150px;
  position: relative;
  overflow: hidden;
  background: #fff;
}

.bt-map-visual::before {
  content: "";
  position: absolute;
  inset: 26px 34px;
  background:
    radial-gradient(circle at 24% 28%, var(--bt-navy) 0 17%, transparent 18%),
    radial-gradient(circle at 55% 42%, var(--bt-navy) 0 22%, transparent 23%),
    radial-gradient(circle at 76% 30%, var(--bt-navy) 0 16%, transparent 17%),
    radial-gradient(circle at 44% 68%, var(--bt-navy) 0 23%, transparent 24%),
    linear-gradient(135deg, transparent 0 42%, var(--bt-navy) 42% 48%, transparent 48% 100%);
  opacity: 0.95;
}

.bt-map-visual span {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--bt-orange);
  box-shadow: 0 0 0 2px #fff;
}

.bt-map-visual span:nth-child(1) { left: 25%; top: 30%; }
.bt-map-visual span:nth-child(2) { left: 36%; top: 54%; }
.bt-map-visual span:nth-child(3) { left: 52%; top: 42%; }
.bt-map-visual span:nth-child(4) { left: 66%; top: 36%; }
.bt-map-visual span:nth-child(5) { left: 74%; top: 66%; }
.bt-map-visual span:nth-child(6) { left: 45%; top: 24%; }
.bt-map-visual span:nth-child(7) { left: 57%; top: 72%; }
.bt-map-visual span:nth-child(8) { left: 31%; top: 70%; }
.bt-map-visual span:nth-child(9) { left: 80%; top: 44%; }
.bt-map-visual span:nth-child(10) { left: 19%; top: 58%; }

.bt-resource-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
}

.bt-resource-tabs button {
  min-height: 40px;
  padding: 0 18px;
  border: 1px solid var(--bt-border);
  border-radius: 999px;
  background: #fff;
  color: var(--bt-blue);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.bt-resource-tabs button.is-active,
.bt-resource-tabs button:hover {
  background: var(--bt-navy);
  color: #fff;
  border-color: var(--bt-navy);
}

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

.bt-resource-card {
  padding: 28px;
}

.bt-resource-card span {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border-radius: 999px;
  background: var(--bt-navy);
  color: #fff;
}

.bt-resource-card h3 {
  margin: 0 0 8px;
  color: var(--bt-navy-dark);
  font-size: 22px;
}

.bt-resource-card p {
  margin: 0 0 18px;
  color: var(--bt-muted);
  font-size: 17px;
}

.bt-resource-card a {
  color: var(--bt-blue);
  font-weight: 700;
  text-decoration: none;
}

.bt-credential-section {
  max-width: 1240px;
  margin: 0 auto;
  padding: 26px 24px 70px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.bt-credential-card {
  min-height: 500px;
  padding: 30px;
  text-align: center;
}

.bt-badge-art {
  width: 230px;
  height: 230px;
  margin: 0 auto 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  background:
    linear-gradient(135deg, #d8b15e, #fff2b5 25%, #b0842c 48%, #f2d78a 72%, #a77320);
  clip-path: polygon(8% 0, 92% 0, 92% 70%, 50% 100%, 8% 70%);
}

.bt-badge-art span {
  display: block;
  color: var(--bt-navy);
  font-size: 32px;
  font-weight: 900;
}

.bt-badge-art iconify-icon {
  color: var(--bt-navy);
}

.bt-credential-card h2 {
  margin: 0 0 12px;
  color: var(--bt-navy-dark);
  font-size: 22px;
  line-height: 1.26;
}

.bt-credential-card p {
  max-width: 520px;
  margin: 0 auto 20px;
  color: var(--bt-muted);
  font-size: 18px;
}

.bt-credential-card a {
  color: var(--bt-blue);
  font-weight: 700;
  text-decoration: none;
}

.bt-warning-card .bt-badge-art {
  background:
    linear-gradient(135deg, #e5e7eb, #ffffff 30%, #a8b2bd 52%, #f6f7f8 75%, #8c98a4);
}

.bt-faq {
  padding-top: 10px;
}

.bt-faq h2 {
  text-align: center;
  margin-bottom: 34px;
}

.bt-faq-list {
  max-width: 770px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}

.bt-faq details {
  overflow: hidden;
}

.bt-faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 56px;
  padding: 0 18px;
  color: var(--bt-blue);
  font-size: 18px;
  font-weight: 900;
  cursor: pointer;
  list-style: none;
}

.bt-faq summary::-webkit-details-marker {
  display: none;
}

.bt-faq summary::after {
  content: "+";
  color: var(--bt-blue);
  font-size: 34px;
  line-height: 1;
  font-weight: 500;
}

.bt-faq details[open] summary::after {
  content: "-";
}

.bt-faq details div {
  padding: 0 18px 24px;
  color: var(--bt-muted);
  font-size: 17px;
}

.bt-floating-action {
  position: fixed;
  right: 0;
  top: 50%;
  z-index: 40;
  transform: translateY(-50%);
  width: 145px;
  min-height: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: var(--bt-navy);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 18px 32px rgba(7, 50, 76, 0.24);
}

.bt-floating-action span {
  color: var(--bt-sky);
}

.bt-floating-action strong {
  font-size: 15px;
  text-transform: uppercase;
}

.bt-footer {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 42px;
  padding: 48px max(28px, 12vw);
  background: var(--bt-navy);
  color: #fff;
  border-top: 8px solid var(--bt-orange-soft);
}

.bt-footer img {
  width: 150px;
  margin-bottom: 16px;
  background: #fff;
  padding: 8px;
  border-radius: var(--bt-radius);
}

.bt-footer p {
  max-width: 430px;
  margin: 0;
  color: rgba(255,255,255,0.78);
}

.bt-footer nav {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  justify-content: flex-end;
  gap: 16px 28px;
}

.bt-footer a {
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 1200px) {
  .bt-header {
    gap: 22px;
  }

  .bt-nav {
    gap: 20px;
  }

  .bt-nav a {
    font-size: 16px;
  }

  .bt-feature-strip {
    padding-left: 28px;
    padding-right: 28px;
  }

  .bt-floating-action {
    display: none;
  }
}

@media (max-width: 980px) {
  .bt-header {
    min-height: 88px;
    padding: 0 22px;
  }

  .bt-brand-logo {
    width: 166px;
  }

  .bt-nav,
  .bt-icon-link,
  .bt-login {
    display: none;
  }

  .bt-menu-toggle {
    display: inline-flex;
  }

  .bt-mobile-menu {
    top: 88px;
    max-height: calc(100vh - 88px);
    overflow-y: auto;
  }

  .bt-hero {
    grid-template-columns: 1fr;
  }

  .bt-hero-copy {
    min-height: auto;
    padding: 72px 28px 56px;
  }

  .bt-hero-copy::after {
    display: none;
  }

  .bt-hero h1 {
    font-size: 40px;
  }

  .bt-hero-points {
    font-size: 19px;
  }

  .bt-hero-media {
    min-height: 320px;
  }

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

  .bt-intro-grid,
  .bt-course-grid,
  .bt-type-grid,
  .bt-results-grid,
  .bt-resource-grid,
  .bt-credential-section,
  .bt-footer {
    grid-template-columns: 1fr;
  }

  .bt-plan-band {
    grid-template-columns: 1fr;
    padding: 46px 28px;
  }

  .bt-band-btn {
    justify-self: start;
  }

  .bt-footer nav {
    justify-content: flex-start;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 15px;
  }

  .bt-header {
    min-height: 76px;
    padding: 0 16px;
  }

  .bt-brand-logo {
    width: 150px;
  }

  .bt-mobile-menu {
    top: 76px;
    max-height: calc(100vh - 76px);
  }

  .bt-hero-copy {
    padding: 44px 20px 36px;
  }

  .bt-eyebrow,
  .bt-kicker {
    font-size: 12px;
  }

  .bt-hero h1 {
    font-size: 30px;
  }

  .bt-hero-points {
    font-size: 16px;
    margin-bottom: 24px;
  }

  .bt-hero-media {
    min-height: 230px;
  }

  .bt-primary-btn,
  .bt-secondary-btn,
  .bt-band-btn {
    width: 100%;
    padding-left: 18px;
    padding-right: 18px;
  }

  .bt-feature-strip {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .bt-intro-panel {
    margin: 18px 14px 0;
    padding: 28px 0 20px;
  }

  .bt-intro-panel h2,
  .bt-section-heading h2,
  .bt-faq h2,
  .bt-plan-band h2 {
    font-size: 28px;
  }

  .bt-intro-grid p,
  .bt-section-heading p:not(.bt-kicker),
  .bt-plan-band p {
    font-size: 17px;
  }

  .bt-filter-bar {
    display: grid;
    gap: 14px;
  }

  .bt-filter-bar select {
    width: 100%;
  }

  .bt-section,
  .bt-faq {
    padding-left: 16px;
    padding-right: 16px;
  }

  .bt-card-body,
  .bt-resource-card,
  .bt-credential-card {
    padding-left: 20px;
    padding-right: 20px;
  }

  .bt-badge-art {
    width: 190px;
    height: 190px;
  }
}