:root {
  --ink: #132a32;
  --ink-soft: #2c4a55;
  --mist: #d7e4ea;
  --paper: #eef4f7;
  --white: #f8fbfd;
  --celadon: #3f7f6f;
  --celadon-deep: #2b5c50;
  --ember: #b85c38;
  --line: #a9bfc9;
  --muted: #5a737d;
  --danger: #9b2f2f;
  --ok: #1f6b4f;
  --shadow: 0 18px 40px rgba(19, 42, 50, 0.08);
  --radius: 4px;
  --font-display: "Syne", sans-serif;
  --font-body: "Literata", Georgia, serif;
  --font-ui: "Karla", sans-serif;
  --max: 1120px;
  --header-h: 4.25rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(238, 244, 247, 0.92), rgba(215, 228, 234, 0.75)),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 47px,
      rgba(169, 191, 201, 0.28) 47px,
      rgba(169, 191, 201, 0.28) 48px
    ),
    var(--paper);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  min-height: 100vh;
}

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

a {
  color: var(--celadon-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--ember);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}

p {
  margin: 0 0 1rem;
}

ul, ol {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--ink);
  color: var(--white);
  padding: 0.5rem 0.85rem;
  z-index: 1000;
  font-family: var(--font-ui);
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(248, 251, 253, 0.88);
  border-bottom: 1px solid rgba(169, 191, 201, 0.55);
}

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

.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-decoration: none;
}

.brand:hover {
  color: var(--celadon-deep);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}

.site-nav a {
  font-family: var(--font-ui);
  font-size: 0.92rem;
  color: var(--ink-soft);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ember);
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius);
  padding: 0.55rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--ink);
  margin: 0.28rem 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary {
  background: var(--ink);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--celadon-deep);
  color: var(--white);
}

.btn-secondary {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}

.btn-secondary:hover {
  background: var(--ink);
  color: var(--white);
}

.btn-ghost {
  background: rgba(248, 251, 253, 0.2);
  border-color: rgba(248, 251, 253, 0.55);
  color: var(--white);
}

.btn-ghost:hover {
  background: var(--white);
  color: var(--ink);
}

/* Hero */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: grid;
  align-items: end;
  color: var(--white);
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: heroDrift 18s ease-in-out infinite alternate;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(19, 42, 50, 0.25) 0%, rgba(19, 42, 50, 0.55) 45%, rgba(19, 42, 50, 0.88) 100%),
    linear-gradient(90deg, rgba(19, 42, 50, 0.55), transparent 55%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 4.5rem 0 3.5rem;
  max-width: 40rem;
  animation: riseIn 0.9s ease both;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 8vw, 5.4rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin: 0 0 1rem;
  font-weight: 800;
}

.hero-lede {
  font-size: 1.15rem;
  max-width: 34rem;
  color: rgba(248, 251, 253, 0.92);
  margin-bottom: 1.5rem;
}

.page-hero {
  padding: 3.5rem 0 2rem;
  border-bottom: 1px solid rgba(169, 191, 201, 0.45);
  background:
    radial-gradient(ellipse at top left, rgba(63, 127, 111, 0.12), transparent 50%),
    linear-gradient(180deg, rgba(248, 251, 253, 0.7), transparent);
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  max-width: 18ch;
}

.page-hero p {
  max-width: 42rem;
  color: var(--muted);
}

.page-hero-media {
  margin-top: 1.75rem;
  min-height: 14rem;
  overflow: hidden;
  border-radius: var(--radius);
}

.page-hero-media img {
  width: 100%;
  height: 18rem;
  object-fit: cover;
  animation: riseIn 1s ease both;
}

/* Sections */
.section {
  padding: 4.25rem 0;
}

.section- Tight {
  padding: 2.75rem 0;
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2rem;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
}

.eyebrow {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--celadon-deep);
  margin-bottom: 0.55rem;
}

.muted {
  color: var(--muted);
}

.split {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 860px) {
  .split {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .split-reverse {
    grid-template-columns: 0.95fr 1.05fr;
  }

  .split-reverse .split-copy {
    order: 2;
  }
}

.panel {
  background: rgba(248, 251, 253, 0.72);
  border: 1px solid rgba(169, 191, 201, 0.55);
  padding: 1.4rem;
}

.panel + .panel {
  margin-top: 1rem;
}

/* Trust strip */
.trust-strip {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  padding: 1.5rem 0;
  border-block: 1px solid rgba(169, 191, 201, 0.55);
  background: rgba(248, 251, 253, 0.55);
}

.trust-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.75rem;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.trust-item span {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--muted);
}

/* Course / blog grids */
.card-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.course-card,
.blog-card,
.price-tier,
.review-block {
  background: rgba(248, 251, 253, 0.78);
  border: 1px solid rgba(169, 191, 201, 0.5);
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.course-card:hover,
.blog-card:hover {
  transform: translateY(-3px);
  border-color: var(--celadon);
}

.course-card img,
.blog-card img {
  width: 100%;
  height: 11.5rem;
  object-fit: cover;
}

.course-card .card-body,
.blog-card .card-body,
.price-tier,
.review-block {
  padding: 1.15rem 1.2rem 1.35rem;
}

.card-meta,
.meta {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 0.45rem;
}

.course-card h3,
.blog-card h3 {
  font-size: 1.2rem;
}

.course-card h3 a,
.blog-card h3 a {
  color: var(--ink);
  text-decoration: none;
}

.course-card h3 a:hover,
.blog-card h3 a:hover {
  color: var(--celadon-deep);
}

/* Benefits */
.benefit-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.benefit-list li {
  padding: 1rem 0;
  border-top: 1px solid rgba(169, 191, 201, 0.55);
  display: grid;
  gap: 0.35rem;
}

.benefit-list li:last-child {
  border-bottom: 1px solid rgba(169, 191, 201, 0.55);
}

.benefit-list strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
}

/* Pricing */
.price-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  align-items: stretch;
}

.price-tier.featured {
  border-color: var(--celadon);
  background:
    linear-gradient(180deg, rgba(63, 127, 111, 0.1), transparent 40%),
    rgba(248, 251, 253, 0.9);
}

.price-tier h3 {
  font-size: 1.35rem;
}

.price-amount {
  font-family: var(--font-display);
  font-size: 2.2rem;
  letter-spacing: -0.03em;
  margin: 0.4rem 0 0.85rem;
}

.price-amount span {
  font-size: 0.95rem;
  color: var(--muted);
  font-family: var(--font-ui);
}

.price-tier ul {
  padding-left: 1.1rem;
  margin-bottom: 1.25rem;
  color: var(--ink-soft);
}

/* Reviews */
.review-grid {
  display: grid;
  gap: 1.25rem;
}

.review-block cite,
.review-block .attr {
  font-family: var(--font-ui);
  font-style: normal;
  font-size: 0.88rem;
  color: var(--muted);
}

.stars {
  font-family: var(--font-ui);
  letter-spacing: 0.08em;
  color: var(--ember);
  margin-bottom: 0.4rem;
}

.case-study {
  margin-top: 2rem;
  padding: 1.5rem;
  border-left: 3px solid var(--celadon);
  background: rgba(248, 251, 253, 0.7);
}

/* Forms */
.form {
  display: grid;
  gap: 1rem;
  max-width: 36rem;
}

.form-row {
  display: grid;
  gap: 0.35rem;
}

.form label {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.92rem;
}

.form input,
.form select,
.form textarea {
  font: inherit;
  font-family: var(--font-ui);
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
}

.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: 2px solid rgba(63, 127, 111, 0.45);
  border-color: var(--celadon);
}

.field-error {
  color: var(--danger);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  min-height: 1.1em;
}

.form-status {
  font-family: var(--font-ui);
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius);
  display: none;
}

.form-status.is-success {
  display: block;
  background: rgba(31, 107, 79, 0.12);
  color: var(--ok);
  border: 1px solid rgba(31, 107, 79, 0.3);
}

.form-status.is-error {
  display: block;
  background: rgba(155, 47, 47, 0.1);
  color: var(--danger);
  border: 1px solid rgba(155, 47, 47, 0.25);
}

.contact-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 860px) {
  .contact-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.address-block {
  font-style: normal;
  line-height: 1.7;
}

/* FAQ */
.faq details {
  border-top: 1px solid rgba(169, 191, 201, 0.55);
  padding: 0.9rem 0;
}

.faq details:last-child {
  border-bottom: 1px solid rgba(169, 191, 201, 0.55);
}

.faq summary {
  font-family: var(--font-display);
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

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

.faq details p {
  margin-top: 0.6rem;
  color: var(--ink-soft);
}

/* Modules */
.module-list {
  list-style: none;
  padding: 0;
  counter-reset: mod;
}

.module-list li {
  counter-increment: mod;
  padding: 1rem 0 1rem 3rem;
  position: relative;
  border-bottom: 1px solid rgba(169, 191, 201, 0.45);
}

.module-list li::before {
  content: counter(mod, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1rem;
  font-family: var(--font-display);
  color: var(--celadon-deep);
  font-weight: 700;
}

/* Legal */
.legal-content {
  max-width: 48rem;
}

.legal-content h2 {
  margin-top: 2rem;
  font-size: 1.35rem;
}

.legal-content table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  margin: 1rem 0 1.5rem;
}

.legal-content th,
.legal-content td {
  border: 1px solid var(--line);
  padding: 0.65rem 0.75rem;
  text-align: left;
  vertical-align: top;
  background: rgba(248, 251, 253, 0.65);
}

.legal-content th {
  background: rgba(63, 127, 111, 0.12);
}

/* CTA band */
.cta-band {
  background:
    linear-gradient(135deg, rgba(19, 42, 50, 0.95), rgba(43, 92, 80, 0.92)),
    var(--ink);
  color: var(--white);
  padding: 3.5rem 0;
}

.cta-band h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  max-width: 18ch;
}

.cta-band p {
  max-width: 36rem;
  color: rgba(248, 251, 253, 0.88);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

/* Footer */
.site-footer {
  background: var(--ink);
  color: rgba(248, 251, 253, 0.86);
  padding: 3rem 0 1.5rem;
  margin-top: 2rem;
}

.footer-grid {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  margin-bottom: 2rem;
}

.footer-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--white);
}

.footer-heading {
  font-size: 0.95rem;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.4rem;
}

.site-footer a {
  color: rgba(248, 251, 253, 0.82);
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 0.92rem;
}

.site-footer a:hover {
  color: #9fd0c0;
}

.footer-address {
  font-style: normal;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.footer-base {
  border-top: 1px solid rgba(169, 191, 201, 0.25);
  padding-top: 1rem;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: rgba(248, 251, 253, 0.65);
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  z-index: 200;
  max-width: 34rem;
  margin-inline: auto;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1.1rem 1.2rem;
  display: none;
  animation: riseIn 0.45s ease both;
}

.cookie-banner.is-visible {
  display: block;
}

.cookie-banner p {
  font-family: var(--font-ui);
  font-size: 0.92rem;
  margin-bottom: 0.9rem;
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.inline-error {
  font-family: var(--font-ui);
  color: var(--danger);
  background: rgba(155, 47, 47, 0.08);
  border: 1px solid rgba(155, 47, 47, 0.2);
  padding: 0.65rem 0.8rem;
  margin: 0.5rem 0;
}

/* 404 */
.error-page {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 4rem 1rem;
}

.error-page h1 {
  font-size: clamp(3rem, 10vw, 6rem);
  letter-spacing: -0.05em;
}

/* Instructor */
.instructor {
  display: grid;
  gap: 1.25rem;
  align-items: center;
}

@media (min-width: 700px) {
  .instructor {
    grid-template-columns: 140px 1fr;
  }
}

.instructor img {
  width: 140px;
  height: 140px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid rgba(63, 127, 111, 0.35);
}

.article-body {
  max-width: 44rem;
}

.article-body h2 {
  margin-top: 2rem;
  font-size: 1.45rem;
}

.prose-wide {
  max-width: 48rem;
}

/* Animations */
@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroDrift {
  from {
    transform: scale(1.04) translateY(0);
  }
  to {
    transform: scale(1.1) translateY(-1.5%);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile nav */
@media (max-width: 920px) {
  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    padding: 1rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }

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