:root {
  --bg: #07101a;
  --bg-soft: #0c1623;
  --panel: rgba(15, 25, 39, 0.92);
  --panel-strong: #101c2d;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(88, 161, 255, 0.22);
  --text: #eef3fb;
  --muted: #9ba8c0;
  --blue: #58a1ff;
  --blue-soft: rgba(88, 161, 255, 0.12);
  --green: #8ce3a8;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", -apple-system, BlinkMacSystemFont, sans-serif;
  background:
    radial-gradient(circle at 50% 18%, rgba(88, 161, 255, 0.16), transparent 30%),
    radial-gradient(circle at top left, rgba(88, 161, 255, 0.15), transparent 34%),
    radial-gradient(circle at top right, rgba(35, 80, 150, 0.2), transparent 30%),
    linear-gradient(180deg, #07101a 0%, #0a1119 46%, #09111a 100%);
  color: var(--text);
  line-height: 1.7;
}

a {
  color: inherit;
}

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

.page-shell {
  min-height: 100vh;
}

.academy-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
  background: rgba(7, 16, 26, 0.78);
}

.academy-nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.academy-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
}

.academy-brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 24px rgba(88, 161, 255, 0.2);
}

.academy-brand-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.academy-brand-copy {
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
}

.academy-brand-title {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.academy-brand-subtitle {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.academy-links {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.academy-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.academy-links a:hover,
.academy-links a:focus-visible {
  color: var(--text);
}

.academy-link-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.15rem;
  border-radius: 999px;
  background: var(--blue);
  color: white !important;
  box-shadow: 0 12px 30px rgba(88, 161, 255, 0.28);
}

.academy-main {
  max-width: 1160px;
  margin: 0 auto;
  padding: 2rem 1.25rem 5rem;
}

.hero-panel {
  position: relative;
  overflow: hidden;
  padding: 3rem;
  border-radius: 28px;
  border: 1px solid var(--line);
  background:
    linear-gradient(140deg, rgba(88, 161, 255, 0.16), transparent 34%),
    linear-gradient(180deg, rgba(11, 21, 34, 0.96), rgba(13, 23, 36, 0.94));
  box-shadow: var(--shadow);
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: auto -10% -40% auto;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(88, 161, 255, 0.18), transparent 66%);
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: var(--blue-soft);
  border: 1px solid var(--line-strong);
  color: var(--blue);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-title {
  margin: 1rem 0 0.8rem;
  max-width: 11ch;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(3rem, 7vw, 5.6rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.hero-subtitle {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.7vw, 1.2rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.6rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 48px;
  padding: 0.8rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 800;
}

.button-primary {
  background: var(--blue);
  color: white;
  box-shadow: 0 12px 30px rgba(88, 161, 255, 0.28);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line);
  color: var(--text);
}

.section {
  margin-top: 3rem;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.section-heading h2 {
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1;
  letter-spacing: -0.03em;
}

.section-heading p {
  margin: 0;
  max-width: 560px;
  color: var(--muted);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.15rem;
}

.guide-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: 1.35rem;
  border-radius: 24px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(88, 161, 255, 0.09), transparent 34%),
    linear-gradient(180deg, rgba(17, 28, 43, 0.95), rgba(12, 20, 31, 0.97));
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.guide-card::before {
  content: "";
  position: absolute;
  inset: auto auto -40px -40px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(88, 161, 255, 0.16), transparent 70%);
}

.guide-card:hover,
.guide-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--line-strong);
}

.guide-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: auto;
  padding-top: 1rem;
}

.guide-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  border: 1px solid var(--line);
  font-size: 0.75rem;
  font-weight: 700;
}

.guide-card h3 {
  position: relative;
  margin: 0 0 0.6rem;
  font-size: 1.34rem;
  line-height: 1.14;
  letter-spacing: -0.03em;
}

.guide-card p {
  position: relative;
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.article-header {
  margin-bottom: 2rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 1.4rem;
  align-items: start;
}

.article-body {
  padding: 2rem;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 23, 36, 0.97), rgba(11, 18, 29, 0.98));
  box-shadow: var(--shadow);
}

.article-body h2,
.article-body h3 {
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.article-body h2 {
  margin: 2rem 0 0.7rem;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(1.75rem, 3.2vw, 2.45rem);
}

.article-body h3 {
  margin: 1.5rem 0 0.55rem;
  font-size: 1.2rem;
}

.article-body p,
.article-body li {
  color: #d5deee;
  font-size: 1rem;
}

.article-body p {
  margin: 0 0 1rem;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.2rem;
  padding-left: 1.2rem;
}

.article-body li + li {
  margin-top: 0.45rem;
}

.quick-note,
.mini-cta,
.editor-note {
  padding: 1.15rem;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.quick-note {
  margin-bottom: 1.3rem;
  background: linear-gradient(180deg, rgba(88, 161, 255, 0.08), rgba(255, 255, 255, 0.03));
  border-color: var(--line-strong);
}

.quick-note strong,
.mini-cta strong,
.editor-note strong {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.guide-divider {
  height: 1px;
  margin: 1.9rem 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.09), transparent);
}

.list-check {
  list-style: none;
  padding: 0;
  margin: 1rem 0 1.4rem;
}

.list-check li {
  position: relative;
  padding-left: 1.45rem;
}

.list-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 6px rgba(140, 227, 168, 0.1);
}

.sticky-rail {
  position: sticky;
  top: 92px;
  display: grid;
  gap: 1rem;
}

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

.toc-list li + li {
  margin-top: 0.55rem;
}

.toc-list a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.94rem;
}

.toc-list a:hover,
.toc-list a:focus-visible {
  color: var(--text);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.related-card {
  padding: 1rem;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  text-decoration: none;
}

.related-card strong {
  display: block;
  margin-bottom: 0.45rem;
}

.related-card span {
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-note {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 920px) {
  .academy-links {
    gap: 0.8rem;
  }

  .hero-panel {
    padding: 2.2rem;
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .sticky-rail {
    position: static;
  }
}

@media (max-width: 720px) {
  .academy-nav-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .academy-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .academy-main {
    padding-top: 1.35rem;
  }

  .hero-panel,
  .article-body {
    padding: 1.35rem;
    border-radius: 22px;
  }

  .hero-title {
    max-width: none;
  }

  .section-heading {
    flex-direction: column;
    align-items: start;
  }
}