:root {
  --sky-0: #f8fcff;
  --sky-1: #ecf8ff;
  --sky-2: #dff2ff;
  --line: rgba(17, 93, 128, 0.15);
  --text-strong: #10374b;
  --text-body: #2e4f5f;
  --brand: #0a8dc9;
  --brand-strong: #066ea0;
  --mint: #39b78f;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ffffff;
  --shadow: 0 20px 55px rgba(16, 55, 75, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--text-body);
  background:
    radial-gradient(circle at 9% 4%, #ffffff 0, rgba(255, 255, 255, 0.05) 35%),
    linear-gradient(150deg, var(--sky-0) 0%, var(--sky-1) 45%, var(--sky-2) 100%);
  font-family: "Avenir Next", "Nunito Sans", "Trebuchet MS", "Century Gothic", sans-serif;
  line-height: 1.55;
  overflow-x: hidden;
}

.bg-orb {
  position: fixed;
  border-radius: 999px;
  filter: blur(60px);
  pointer-events: none;
  z-index: -2;
}

.orb-a {
  width: 20rem;
  height: 20rem;
  top: -7rem;
  left: -4rem;
  background: rgba(10, 141, 201, 0.22);
}

.orb-b {
  width: 22rem;
  height: 22rem;
  right: -5rem;
  bottom: -8rem;
  background: rgba(57, 183, 143, 0.2);
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(to right, rgba(15, 118, 168, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 118, 168, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at center, black 25%, transparent 85%);
  z-index: -3;
}

.site-header,
.layout,
.site-footer {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  padding-top: 1.3rem;
}

.brand-wrap {
  display: grid;
  gap: 0.18rem;
}

.brand-kicker {
  margin: 0;
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  font-weight: 800;
  color: var(--brand-strong);
}

.brand-sub {
  margin: 0;
  color: var(--text-strong);
  font-size: 1.04rem;
  font-weight: 700;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.55rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--text-strong);
  font-size: 0.86rem;
  font-weight: 700;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.main-nav a:hover {
  transform: translateY(-1px);
  border-color: rgba(10, 141, 201, 0.4);
  background: #ffffff;
}

.layout {
  padding: 1.3rem 0 2rem;
  display: grid;
  gap: 1rem;
}

.hero,
.card {
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  background: var(--surface);
}

.hero {
  padding: clamp(1.2rem, 3vw, 2.2rem);
}

.eyebrow {
  margin: 0;
  color: var(--brand-strong);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 800;
}

h1,
h2 {
  margin: 0;
  color: var(--text-strong);
  font-family: "Baskerville", "Book Antiqua", "Palatino Linotype", serif;
  letter-spacing: -0.01em;
}

h1 {
  margin-top: 0.6rem;
  font-size: clamp(1.7rem, 4vw, 2.95rem);
  max-width: 16ch;
  line-height: 1.1;
}

.hero-copy {
  margin: 1rem 0 0;
  font-size: 1.05rem;
  max-width: 66ch;
}

.hero-actions {
  margin-top: 1.1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 12px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  padding: 0.78rem 1rem;
  transition: transform 170ms ease, box-shadow 170ms ease;
}

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

.btn-primary {
  color: #ffffff;
  background: linear-gradient(140deg, var(--brand), #21a1db 60%, #2eb2e8 100%);
  box-shadow: 0 10px 25px rgba(9, 143, 206, 0.3);
}

.btn-soft {
  color: var(--brand-strong);
  background: #ffffff;
  border: 1px solid rgba(10, 141, 201, 0.3);
}

.hero-points {
  margin: 1.1rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.35rem;
  color: var(--text-strong);
  font-weight: 600;
}

.card {
  padding: clamp(1rem, 2.5vw, 1.9rem);
}

.letter-card p {
  margin: 0.75rem 0 0;
}

.signature {
  margin-top: 1rem;
  font-weight: 800;
  color: var(--brand-strong);
  letter-spacing: 0.08em;
}

.portals h2,
.signup-card h2 {
  margin-bottom: 0.75rem;
}

.portal-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.7rem;
}

.portal-link {
  text-decoration: none;
  border-radius: 16px;
  padding: 0.85rem;
  border: 1px solid var(--line);
  background: var(--surface-strong);
  display: grid;
  gap: 0.35rem;
  min-height: 120px;
  transition: transform 170ms ease, border-color 170ms ease;
}

.portal-link:hover {
  transform: translateY(-2px);
  border-color: rgba(10, 141, 201, 0.4);
}

.portal-title {
  color: var(--text-strong);
  font-weight: 800;
}

.portal-copy {
  color: var(--text-body);
  font-size: 0.9rem;
}

.signup-copy {
  margin: 0;
}

.signup-form {
  margin-top: 1rem;
  display: grid;
  gap: 0.55rem;
}

.signup-form label {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text-strong);
}

.signup-form input {
  width: 100%;
  border: 1px solid rgba(10, 141, 201, 0.24);
  border-radius: 12px;
  background: #ffffff;
  padding: 0.85rem 0.9rem;
  font: inherit;
  color: var(--text-strong);
  outline: none;
}

.signup-form input:focus {
  border-color: rgba(10, 141, 201, 0.6);
  box-shadow: 0 0 0 4px rgba(10, 141, 201, 0.15);
}

.signup-form .btn {
  margin-top: 0.5rem;
}

.form-message {
  min-height: 1.35rem;
  margin: 0;
  font-size: 0.92rem;
  font-weight: 700;
}

.form-message.success {
  color: #0b7d51;
}

.form-message.error {
  color: #ad2e4c;
}

.site-footer {
  padding-bottom: 1.6rem;
}

.site-footer p {
  margin: 0;
  color: var(--text-body);
  text-align: center;
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  animation: rise-in 700ms ease forwards;
}

.hero.reveal {
  animation-delay: 70ms;
}

.card.reveal {
  animation-delay: 140ms;
}

.site-footer.reveal {
  animation-delay: 210ms;
}

@keyframes rise-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .portal-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .site-header {
    flex-direction: column;
    align-items: stretch;
  }

  .main-nav {
    justify-content: flex-start;
  }

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

@media (max-width: 520px) {
  .portal-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    max-width: none;
  }
}