:root {
  --ember: #e02c13;
  --wine: #83142f;
  --royal: #023879;
  --peach: #e6935b;
  --ink: #0c0302;
  --text: #111827;
  --muted: #5b6473;
  --paper: #f6f7fb;
  --card: #ffffff;
  --line: rgba(17, 24, 39, 0.1);
  --radius: 18px;
  --radius-lg: 26px;
  --shadow: 0 18px 50px rgba(12, 3, 2, 0.1);
  --shadow-soft: 0 10px 28px rgba(12, 3, 2, 0.08);
  --container: 1120px;
  --sec: 68px;
  --sec-tight: 46px;
  --hero-top: 56px;
  --hero-bottom: 22px;
  --card-pad: 16px;
  --grid-gap: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  width: 100%;
  overflow-x: clip;
}

html {
  -webkit-text-size-adjust: 100%;
}

@supports not (overflow: clip) {
  html,
  body {
    overflow-x: hidden;
  }
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto,
    Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(
      980px 560px at 14% 0%,
      rgba(2, 56, 121, 0.16),
      transparent 60%
    ),
    radial-gradient(
      900px 520px at 88% 12%,
      rgba(224, 44, 19, 0.09),
      transparent 60%
    ),
    radial-gradient(
      900px 520px at 68% 98%,
      rgba(131, 20, 47, 0.09),
      transparent 60%
    ),
    var(--paper);
  line-height: 1.55;
  overflow-x: hidden;
}

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

a {
  color: inherit;
}

::selection {
  background: rgba(2, 56, 121, 0.18);
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: calc(20px + env(safe-area-inset-left));
  padding-right: calc(20px + env(safe-area-inset-right));
}

.section {
  padding: var(--sec) 0;
}

.section.tight {
  padding: var(--sec-tight) 0;
}

.section.alt {
  background: radial-gradient(
      920px 520px at 18% 28%,
      rgba(2, 56, 121, 0.12),
      transparent 60%
    ),
    radial-gradient(
      820px 460px at 88% 42%,
      rgba(224, 44, 19, 0.07),
      transparent 62%
    ),
    rgba(255, 255, 255, 0.6);
  border-top: 1px solid rgba(17, 24, 39, 0.06);
  border-bottom: 1px solid rgba(17, 24, 39, 0.06);
}

.hr {
  height: 1px;
  background: rgba(17, 24, 39, 0.08);
  border: 0;
  margin: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: rgba(246, 247, 251, 0.76);
  border-bottom: 1px solid rgba(17, 24, 39, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 900;
  letter-spacing: 0.2px;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--royal), var(--ember));
  box-shadow: 0 0 0 6px rgba(2, 56, 121, 0.14);
}

.navlinks {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  font-weight: 700;
  color: rgba(17, 24, 39, 0.78);
}

.navlinks a {
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 999px;
}

.navlinks a:hover {
  background: rgba(17, 24, 39, 0.06);
}

.navlinks a.active {
  background: rgba(2, 56, 121, 0.12);
  color: rgba(2, 56, 121, 0.92);
  border: 1px solid rgba(2, 56, 121, 0.22);
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(2, 56, 121, 0.1);
  border: 1px solid rgba(2, 56, 121, 0.22);
  color: rgba(2, 56, 121, 0.92);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.35px;
  text-transform: uppercase;
}

h1 {
  margin: 12px 0 8px;
  font-size: clamp(32px, 4.2vw, 52px);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

h2 {
  margin: 0 0 8px;
  font-size: clamp(22px, 2.5vw, 32px);
  letter-spacing: -0.015em;
}

h3 {
  margin: 0 0 6px;
  font-size: 18px;
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 10px;
}

.lead {
  margin: 0 0 12px;
  font-size: clamp(16px, 1.45vw, 19px);
  color: rgba(17, 24, 39, 0.74);
  max-width: 62ch;
}

.small {
  font-size: 13px;
  color: rgba(17, 24, 39, 0.62);
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 14px 0 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 900;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:focus {
  outline: none;
}

.btn:focus-visible {
  box-shadow: 0 0 0 4px rgba(2, 56, 121, 0.18),
    0 0 0 2px rgba(2, 56, 121, 0.35) inset;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.18);
  outline: none;
}

.btn.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--ember), var(--wine));
  box-shadow: 0 16px 40px rgba(224, 44, 19, 0.22);
}

.btn-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.78);
  border-color: rgba(2, 56, 121, 0.14);
  color: rgba(17, 24, 39, 0.88);
}

.pills {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 13px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(17, 24, 39, 0.1);
  box-shadow: var(--shadow-soft);
  font-weight: 800;
  color: rgba(17, 24, 39, 0.74);
  font-size: 13px;
}

.pill b {
  color: rgba(17, 24, 39, 0.92);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--grid-gap);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

@media (max-width: 860px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(17, 24, 39, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: var(--card-pad);
}

.card.solid {
  background: var(--card);
}

.card .meta {
  margin-top: 10px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tag {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.2px;
  border: 1px solid rgba(17, 24, 39, 0.12);
  background: rgba(255, 255, 255, 0.7);
  color: rgba(17, 24, 39, 0.74);
}

.tag.red {
  border-color: rgba(224, 44, 19, 0.28);
  background: rgba(224, 44, 19, 0.08);
  color: rgba(224, 44, 19, 0.92);
}

.tag.blue {
  border-color: rgba(2, 56, 121, 0.24);
  background: rgba(2, 56, 121, 0.09);
  color: rgba(2, 56, 121, 0.92);
}

.tag.wine {
  border-color: rgba(131, 20, 47, 0.22);
  background: rgba(131, 20, 47, 0.08);
  color: rgba(131, 20, 47, 0.92);
}

.list {
  margin: 8px 0 0;
  padding: 0 0 0 18px;
  color: rgba(17, 24, 39, 0.74);
}

.list li {
  margin: 4px 0;
}

.highlight {
  padding: 14px 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(2, 56, 121, 0.18);
  background: linear-gradient(
    135deg,
    rgba(2, 56, 121, 0.12),
    rgba(224, 44, 19, 0.08)
  );
  box-shadow: var(--shadow-soft);
}

.hero {
  padding-top: var(--hero-top);
  padding-bottom: var(--hero-bottom);
}

.hero .kicker {
  background: rgba(2, 56, 121, 0.1);
  border: 1px solid rgba(2, 56, 121, 0.22);
  box-shadow: var(--shadow-soft);
}

.intro-wrap {
  position: relative;
  z-index: 2;
  max-width: 740px;
  margin: 0 auto;
  text-align: center;
}

.split-stage {
  display: grid;
  grid-template-columns: minmax(0, 460px) 1fr;
  align-items: center;
  gap: 28px;
}

@media (max-width: 860px) {
  .split-stage {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.hero-art {
  justify-self: end;
  width: 100%;
  max-width: 520px;
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
}

.hero-art::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: calc(var(--radius-lg) - 4px);
  background: rgba(246, 247, 251, 0.88);
  z-index: -1;
}

.cta-strip {
  padding: 16px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(2, 56, 121, 0.12), rgba(59, 130, 246, 0.15));
  box-shadow: var(--shadow);
  position: relative;
  z-index: 2;
  color: var(--text);
  text-align: center;
  border: 1px solid rgba(2, 56, 121, 0.2);
}

.cta-strip::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: calc(var(--radius-lg) - 4px);
  background: rgba(255, 255, 255, 0.9);
  z-index: -1;
}

.icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  margin: 12px 0;
}

@media (max-width: 520px) {
  .icon-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  }
}

.icon-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 14px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(17, 24, 39, 0.1);
  box-shadow: var(--shadow-soft);
  text-decoration: none;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.icon-btn:hover,
.icon-btn:focus-visible {
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.18);
  outline: none;
}

.icon-btn::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: calc(var(--radius) - 4px);
  background: rgba(224, 44, 19, 0.04);
  z-index: -1;
}

.icon-btn img {
  width: 28px;
  height: 28px;
}

.icon-btn .label {
  font-weight: 800;
  font-size: 11px;
  letter-spacing: 0.2px;
  color: rgba(17, 24, 39, 0.74);
}

.mono-box {
  padding: 14px 16px;
  border-radius: var(--radius);
  font-family: ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 14px;
  background: rgba(17, 24, 39, 0.04);
  border: 1px solid rgba(17, 24, 39, 0.12);
  overflow-x: auto;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 6px;
  font-weight: 600;
  background: #2563eb;
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 13px;
}

.footer {
  background: var(--paper);
  border-top: 1px solid rgba(17, 24, 39, 0.06);
  padding: 28px 0;
}

body.fun .footer {
  background: rgba(246, 247, 251, 0.96);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

@media (max-width: 520px) {
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

body.fun {
  background: linear-gradient(135deg, #f0f9ff 28%, #ede9fe 88%),
    repeating-linear-gradient(
      -45deg,
      rgba(2, 56, 121, 0.03),
      rgba(2, 56, 121, 0.03) 1px,
      transparent 1px,
      transparent 5px
    ),
    repeating-linear-gradient(
      45deg,
      rgba(2, 56, 121, 0.03),
      rgba(2, 56, 121, 0.03) 1px,
      transparent 1px,
      transparent 5px
    ),
    radial-gradient(
      820px 560px at 22% 8%,
      rgba(224, 44, 19, 0.08),
      transparent 60%
    ),
    radial-gradient(
      680px 460px at 82% 15%,
      rgba(131, 20, 47, 0.07),
      transparent 60%
    ),
    radial-gradient(
      520px 420px at 58% 95%,
      rgba(2, 56, 121, 0.1),
      transparent 60%
    );
  background-size: 42px 42px, 42px 42px, auto, auto, auto;
  opacity: 0.95;
}

body.fun .btn.primary {
  background: linear-gradient(135deg, #1d4ed8, #6d28d9);
  color: #fff;
  border-color: rgba(29, 78, 216, 0.25);
  box-shadow: 0 18px 44px rgba(29, 78, 216, 0.2);
}

body.fun .card::after,
body.fun .hero-art::after,
body.fun .cta-strip::after,
body.fun .icon-btn::after {
  background: rgba(2, 56, 121, 0.1) !important;
}

body.fun .tag.red {
  border-color: rgba(224, 44, 19, 0.16);
  background: rgba(224, 44, 19, 0.05);
  color: rgba(131, 20, 47, 0.88);
}

body.fun .brand-dot {
  width: 10px !important;
  height: 10px !important;
  border-radius: 999px !important;
  background: linear-gradient(135deg, var(--royal), var(--peach)) !important;
  box-shadow: 0 0 0 6px rgba(2, 56, 121, 0.1) !important;
}

body.fun .hero .kicker {
  position: relative;
  padding: 8px 14px 8px 34px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(17, 24, 39, 0.12);
  color: rgba(17, 24, 39, 0.74);
  box-shadow: 0 16px 40px rgba(12, 3, 2, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

body.fun .hero .kicker::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  transform: translateY(-50%);
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.14);
}

@media (max-width: 520px) {
  body.fun {
    background-attachment: scroll;
  }
}

#contact {
  scroll-margin-top: 90px;
}

@supports (-webkit-touch-callout: none) {
  .topbar {
    background: rgba(246, 247, 251, 0.92);
  }
}

.social-media-links {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 14px;
}

.social-media-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.04);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.social-media-links img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  display: block;
}

.social-media-links a:hover,
.social-media-links a:focus-visible {
  transform: translateY(-4px) scale(1.08);
  background: rgba(37, 99, 235, 0.08);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.18);
  outline: none;
}

@media (max-width: 640px) {
  h1 {
    font-size: 1.9rem;
    line-height: 1.25;
  }
  h2 {
    font-size: 1.35rem;
    line-height: 1.3;
  }
  h3 {
    font-size: 1.05rem;
  }
  p,
  li {
    font-size: 0.95rem;
    line-height: 1.6;
  }
  .lead {
    font-size: 1rem;
    line-height: 1.55;
  }
  .small {
    font-size: 0.88rem;
  }
  ol.list,
  ul.list {
    padding-left: 20px;
  }
  ol.list li,
  ul.list li {
    margin-bottom: 10px;
  }
  .btn,
  .copy-btn {
    width: 100%;
    padding: 12px 14px;
    font-size: 16px;
    justify-content: center;
  }
  .mono-box {
    font-size: 13px;
    line-height: 1.45;
    padding: 14px;
    max-height: 300px;
    border-radius: 14px;
  }
  .section {
    padding: 44px 0;
  }
  .section.tight {
    padding: 32px 0;
  }
}

body.curriculum .btn.primary {
  background: #2563eb !important;
  color: #fff !important;
  border: none !important;
  border-radius: 6px !important;
  box-shadow: none !important;
  font-weight: 600 !important;
  padding: 10px 14px !important;
  transform: none !important;
}

body.curriculum .btn.primary:hover,
body.curriculum .btn.primary:focus,
body.curriculum .btn.primary:focus-visible {
  background: #2563eb !important;
  box-shadow: none !important;
  transform: none !important;
}

body.curriculum .copy-btn {
  border-radius: 6px !important;
  font-weight: 600 !important;
}

body.curriculum p,
body.curriculum li,
body.curriculum .small {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.nav-toggle {
  position: relative;
  margin-left: auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-toggle::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 16px;
  height: 2px;
  background: #111;
}

#global-menu {
  position: fixed;
  top: calc(14px + 40px);
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 200px;
  max-width: calc(100vw - 40px);
  padding: 12px;
  background: rgba(246, 247, 251, 0.98);
  border-radius: 16px;
  border: 1px solid rgba(17, 24, 39, 0.12);
  box-shadow: 0 14px 36px rgba(12, 3, 2, 0.14);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 2147483647;
  transition: opacity 0.15s ease, transform 0.15s ease;
  box-sizing: border-box;
}

#global-menu a {
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 700;
  color: rgba(17, 24, 39, 0.78);
  white-space: normal;
  word-break: break-word;
  overflow-wrap: anywhere;
}

#global-menu a:hover {
  background: rgba(17, 24, 39, 0.06);
}

#global-menu a.active {
  background: rgba(2, 56, 121, 0.12);
  color: rgba(2, 56, 121, 0.92);
  border: 1px solid rgba(2, 56, 121, 0.22);
}

#global-menu[style*="display: flex"] {
  opacity: 1;
  transform: translateY(0);
}

#global-menu[style*="display: none"] {
  opacity: 0;
  transform: translateY(-4px);
}

@media (max-width: 520px) {
  #global-menu {
    right: 10px;
    left: 10px;
    max-width: none;
  }
}