:root {
  --navy: #0b2c6b;
  --navy-deep: #071f4d;
  --navy-mid: #163f8a;
  --blue-soft: #4a6fa5;
  --blue-muted: #6b87b0;
  --sky: #e8f0fb;
  --sky-2: #f3f7fc;
  --white: #ffffff;
  --ink: #12233f;
  --line: #d7e2f0;
  --danger: #b42318;
  --success: #067647;
  --shadow: 0 12px 30px rgba(11, 44, 107, 0.1);
  --shadow-strong: 0 20px 50px rgba(11, 44, 107, 0.16);
  --radius: 16px;
  --font: "Plus Jakarta Sans", "Segoe UI", sans-serif;
  --container: 1160px;
  --header-h: 76px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -48px;
  z-index: 100;
  background: var(--navy);
  color: #fff;
  padding: 0.65rem 0.9rem;
  border-radius: 8px;
}

.skip-link:focus {
  top: 1rem;
}

/* Header — matches main site */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.header-inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 0;
}

.brand-mark {
  width: 42px;
  height: 42px;
  color: var(--navy);
  flex-shrink: 0;
}

.brand-mark svg {
  width: 100%;
  height: 100%;
}

.brand-text {
  display: grid;
  gap: 0.05rem;
  min-width: 0;
}

.brand-name {
  font-size: clamp(0.92rem, 2.5vw, 1.05rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--navy);
  white-space: nowrap;
}

.brand-sub {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--blue-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav {
  display: none;
  align-items: center;
  gap: 1.35rem;
}

.nav a {
  color: var(--blue-soft);
  font-weight: 700;
  font-size: 1.05rem;
}

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

.nav a.header-cta,
a.btn.header-cta {
  margin-left: 0.35rem;
  min-height: 46px;
  padding: 0.6rem 1.15rem;
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff !important;
  background: var(--navy);
  border: 1px solid var(--navy);
}

.nav a.header-cta:hover,
a.btn.header-cta:hover {
  color: #ffffff !important;
  background: var(--navy-deep);
  border-color: var(--navy-deep);
}

.nav-toggle {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}

.nav-toggle span {
  width: 16px;
  height: 2px;
  background: var(--navy);
}

.mobile-nav {
  display: grid;
  gap: 0.15rem;
  padding: 0.4rem 1rem 1rem;
  border-top: 1px solid var(--line);
  background: #fff;
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav a {
  padding: 0.8rem 0.35rem;
  color: var(--blue-soft);
  font-weight: 700;
  font-size: 1.08rem;
}

/* Compact intro */
.intro-band {
  background:
    linear-gradient(180deg, var(--sky-2) 0%, #fff 100%);
  padding: 2rem 0 0.5rem;
  border-bottom: 1px solid var(--line);
}

.intro-band-inner {
  max-width: 820px;
}

.intro-band h1 {
  margin: 0 0 0.55rem;
  color: var(--navy);
  font-size: clamp(1.55rem, 3.5vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.intro-band p {
  margin: 0;
  color: var(--blue-soft);
  font-size: 1.02rem;
  max-width: 58ch;
}

/* Sections */
.section {
  padding: 3.25rem 0;
}

.section-intro {
  margin-bottom: 1.75rem;
}

.section-intro.center {
  text-align: center;
  margin-inline: auto;
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 0.45rem;
  color: var(--navy-mid);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow.light {
  color: rgba(255, 255, 255, 0.78);
}

.section-intro h2,
.register-copy h2 {
  margin: 0 0 0.6rem;
  color: var(--navy);
  font-size: clamp(1.55rem, 3vw, 2.1rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
  font-weight: 800;
}

.section-lead {
  margin: 0;
  color: var(--blue-soft);
  font-size: 1.02rem;
}

/* Course cards — large & prominent */
.courses {
  padding-top: 2.25rem;
  background: #fff;
}

.course-grid {
  display: grid;
  gap: 1.15rem;
  grid-template-columns: 1fr;
}

.course-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.45rem 1.3rem 1.35rem;
  box-shadow: var(--shadow);
  display: grid;
  gap: 0.85rem;
  align-content: start;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.course-card:hover,
.course-card.is-selected {
  border-color: rgba(11, 44, 107, 0.35);
  transform: translateY(-3px);
  box-shadow: var(--shadow-strong);
}

.course-card.is-selected {
  outline: 2px solid rgba(11, 44, 107, 0.28);
  outline-offset: 2px;
}

.course-tag {
  margin: 0;
  display: inline-flex;
  width: fit-content;
  padding: 0.28rem 0.65rem;
  border-radius: 8px;
  background: var(--sky);
  color: var(--navy);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.course-card h3 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(1.45rem, 3.4vw, 1.95rem);
  line-height: 1.18;
  letter-spacing: -0.025em;
  font-weight: 800;
}

.course-desc {
  margin: 0;
  color: var(--blue-soft);
  font-size: 1rem;
}

.course-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink);
  display: grid;
  gap: 0.35rem;
  font-weight: 500;
}

.course-select {
  width: 100%;
  margin-top: 0.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.7rem 1.15rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}

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

.btn-primary {
  background: var(--navy);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--navy-deep);
}

.btn-submit {
  width: 100%;
  min-height: 52px;
  font-size: 1.02rem;
}

.btn-submit[disabled] {
  opacity: 0.7;
  cursor: wait;
  transform: none;
}

/* Registration — stands out */
.register {
  background:
    radial-gradient(900px 320px at 10% 0%, rgba(255, 255, 255, 0.12), transparent 55%),
    linear-gradient(145deg, var(--navy) 0%, var(--navy-mid) 55%, #1c4f9c 100%);
  padding: 3.5rem 0;
}

.register-panel {
  display: grid;
  gap: 1.5rem;
  align-items: stretch;
}

.register-copy {
  color: rgba(255, 255, 255, 0.92);
}

.register-copy h2 {
  color: #fff;
}

.register-copy > p {
  margin: 0 0 1rem;
  color: rgba(255, 255, 255, 0.84);
  font-size: 1.05rem;
  max-width: 40ch;
}

.register-points {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.45rem;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 500;
}

.register-form {
  background: var(--white);
  border-radius: 18px;
  padding: 1.35rem;
  box-shadow: var(--shadow-strong);
  display: grid;
  gap: 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.form-grid {
  display: grid;
  gap: 0.95rem;
}

.form-row {
  display: grid;
  gap: 0.4rem;
}

.form-row label {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--navy);
}

.optional {
  font-weight: 500;
  color: var(--blue-muted);
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  padding: 0.85rem 0.95rem;
  background: #fbfcfe;
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  border-color: rgba(11, 44, 107, 0.55);
  box-shadow: 0 0 0 3px rgba(11, 44, 107, 0.12);
}

.form-row textarea {
  resize: vertical;
  min-height: 96px;
}

.form-status {
  min-height: 1.25rem;
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
}

.form-status.is-error {
  color: var(--danger);
}

.form-status.is-success {
  color: var(--success);
}

.form-row.is-invalid input,
.form-row.is-invalid select,
.form-row.is-invalid textarea {
  border-color: rgba(180, 35, 24, 0.5);
}

/* Why */
.why {
  background: var(--sky-2);
}

.why-grid {
  display: grid;
  gap: 1rem;
}

.why-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.25rem 1.2rem;
  box-shadow: 0 8px 20px rgba(11, 44, 107, 0.05);
}

.why-card h3 {
  margin: 0 0 0.4rem;
  color: var(--navy);
  font-size: 1.12rem;
  font-weight: 800;
}

.why-card p {
  margin: 0;
  color: var(--blue-soft);
}

/* Testimonials */
.story-grid {
  display: grid;
  gap: 1.35rem;
}

.story {
  margin: 0;
}

.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: 14px;
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 30%, rgba(74, 111, 165, 0.35), transparent 45%),
    linear-gradient(145deg, var(--navy-deep), var(--navy-mid));
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
}

.video-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.video-play {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(7, 31, 77, 0.45);
  color: #fff;
  border-radius: 10px;
  padding: 0.7rem 1rem 0.7rem 0.75rem;
  cursor: pointer;
  font-weight: 700;
}

.video-play-icon {
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  background: #fff;
  position: relative;
}

.video-play-icon::before {
  content: "";
  position: absolute;
  left: 0.42rem;
  top: 0.28rem;
  border-style: solid;
  border-width: 0.3rem 0 0.3rem 0.45rem;
  border-color: transparent transparent transparent var(--navy);
}

.video-frame.is-missing .video-play {
  cursor: default;
  opacity: 0.9;
}

.story blockquote {
  margin: 0.9rem 0 0;
}

.story blockquote p {
  margin: 0 0 0.45rem;
  color: var(--navy);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.4;
}

.story figcaption {
  color: var(--blue-muted);
  font-size: 0.92rem;
  font-weight: 500;
}

/* Footer */
.site-footer {
  background: var(--navy-deep);
  color: rgba(255, 255, 255, 0.88);
  padding: 2.4rem 0;
}

.footer-inner {
  display: grid;
  gap: 1.25rem;
}

.footer-brand {
  margin: 0 0 0.35rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.footer-copy,
.footer-meta p {
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
}

.footer-meta {
  display: grid;
  gap: 0.4rem;
}

.footer-meta a {
  color: #fff;
  font-weight: 600;
}

.footer-meta a:hover {
  text-decoration: underline;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (min-width: 640px) {
  .course-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .form-grid {
    grid-template-columns: 1fr 1fr;
  }

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

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

  .register-form {
    padding: 1.65rem;
  }
}

@media (min-width: 900px) {
  .nav {
    display: flex;
  }

  .nav-toggle,
  .mobile-nav {
    display: none !important;
  }

  .course-card {
    padding: 1.7rem 1.5rem 1.5rem;
    min-height: 100%;
  }

  .course-card h3 {
    font-size: 1.85rem;
  }

  .register-panel {
    grid-template-columns: 0.9fr 1.15fr;
    gap: 2rem;
    align-items: center;
  }

  .why-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .footer-inner {
    grid-template-columns: 1.2fr 1fr;
    align-items: end;
  }
}

@media (min-width: 1100px) {
  .course-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.35rem;
  }

  .course-card h3 {
    font-size: 2rem;
  }
}

/* Courses + blog split */
.learning-layout {
  display: grid;
  gap: 1.75rem;
}

.blog-rail {
  background: var(--sky-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.blog-rail-header h2 {
  margin: 0 0 0.4rem;
  color: var(--navy);
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.blog-rail-lead {
  margin: 0 0 1rem;
  color: var(--blue-soft);
  font-size: 0.95rem;
}

.blog-latest {
  display: grid;
  gap: 0.85rem;
}

.blog-loading,
.blog-empty {
  margin: 0;
  color: var(--blue-muted);
  font-size: 0.95rem;
}

.blog-rail-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.95rem 1rem;
  display: grid;
  gap: 0.35rem;
}

.blog-rail-card a {
  color: var(--navy);
  font-weight: 800;
  font-size: 1.02rem;
  line-height: 1.3;
}

.blog-rail-card a:hover {
  text-decoration: underline;
}

.blog-rail-card p {
  margin: 0;
  color: var(--blue-soft);
  font-size: 0.9rem;
}

.blog-rail-card time {
  color: var(--blue-muted);
  font-size: 0.8rem;
  font-weight: 600;
}

.blog-all-link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--navy);
  font-weight: 800;
}

.blog-all-link:hover {
  text-decoration: underline;
}

/* Blog pages */
.blog-main {
  padding: 2.5rem 0 3.5rem;
}

.blog-hero {
  margin-bottom: 1.75rem;
  max-width: 720px;
}

.blog-hero h1,
.blog-article h1 {
  margin: 0 0 0.6rem;
  color: var(--navy);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.blog-list {
  display: grid;
  gap: 1rem;
}

.blog-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.3rem 1.25rem;
  box-shadow: var(--shadow);
  display: grid;
  gap: 0.55rem;
}

.blog-card h2 {
  margin: 0;
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  line-height: 1.25;
  font-weight: 800;
}

.blog-card h2 a {
  color: var(--navy);
}

.blog-card h2 a:hover {
  text-decoration: underline;
}

.blog-card > p {
  margin: 0;
  color: var(--blue-soft);
}

.blog-meta {
  margin: 0;
  color: var(--blue-muted);
  font-size: 0.88rem;
  font-weight: 600;
}

.blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.blog-tag {
  background: var(--sky);
  color: var(--navy);
  border-radius: 8px;
  padding: 0.22rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 700;
}

.blog-read {
  color: var(--navy);
  font-weight: 800;
  width: fit-content;
}

.blog-read:hover {
  text-decoration: underline;
}

.blog-article {
  max-width: 760px;
}

.blog-body {
  margin-top: 1.25rem;
  color: var(--ink);
  font-size: 1.05rem;
}

.blog-body h2,
.blog-body h3 {
  color: var(--navy);
  margin: 1.6rem 0 0.6rem;
  letter-spacing: -0.02em;
}

.blog-body p,
.blog-body ul,
.blog-body ol {
  margin: 0 0 1rem;
}

.blog-body a {
  color: var(--navy-mid);
  font-weight: 700;
  text-decoration: underline;
}

.blog-body code {
  background: var(--sky);
  padding: 0.1rem 0.35rem;
  border-radius: 6px;
  font-size: 0.92em;
}

.blog-body pre {
  background: var(--navy-deep);
  color: #eef4ff;
  padding: 1rem;
  border-radius: 12px;
  overflow-x: auto;
}

.blog-body pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.blog-cta {
  margin-top: 2rem;
  padding: 1.2rem 1.25rem;
  border-radius: 14px;
  background: var(--sky);
  border: 1px solid var(--line);
  display: grid;
  gap: 0.8rem;
  justify-items: start;
}

.blog-cta p {
  margin: 0;
  color: var(--navy);
  font-weight: 700;
}

.blog-back {
  margin-top: 1.75rem;
  color: var(--blue-soft);
  font-weight: 600;
}

.blog-back a {
  color: var(--navy);
  font-weight: 800;
}

@media (min-width: 980px) {
  .learning-layout {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.7fr);
    align-items: start;
    gap: 1.5rem;
  }

  .blog-rail {
    position: sticky;
    top: calc(var(--header-h) + 1rem);
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .btn,
  .course-card {
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
  }
}