:root {
  color-scheme: light;
  --ink: #08111f;
  --navy: #071a3a;
  --blue: #075edb;
  --cyan: #20c7ff;
  --teal: #18b99a;
  --amber: #f5a623;
  --mist: #f4f9fc;
  --line: #dbe8f1;
  --white: #ffffff;
  --muted: #5a6a7c;
  --shadow: 0 20px 50px rgba(7, 26, 58, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--white);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 12px clamp(18px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-weight: 800;
  letter-spacing: 0;
}

.brand img {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid var(--blue);
}

nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 32px);
  color: #21334a;
  font-size: 0.94rem;
  font-weight: 700;
}

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

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: calc(88vh - 72px);
  overflow: hidden;
  padding: clamp(42px, 7vw, 92px) clamp(18px, 5vw, 72px) clamp(36px, 5vw, 64px);
  background:
    linear-gradient(90deg, rgba(249, 253, 255, 0.98) 0%, rgba(238, 247, 251, 0.92) 48%, rgba(255, 255, 255, 0.62) 100%),
    url("assets/ai-nurse-brief-logo.jpeg") right 8% center / min(52vw, 620px) auto no-repeat,
    #f9fdff;
}

.hero::after {
  position: absolute;
  inset: auto clamp(18px, 5vw, 72px) 0 auto;
  width: min(34vw, 360px);
  height: 6px;
  background: linear-gradient(90deg, var(--cyan), var(--teal), var(--amber));
  content: "";
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  color: var(--navy);
  font-size: clamp(3rem, 8vw, 6.8rem);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 3.75rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  color: var(--navy);
  font-size: 1.22rem;
  line-height: 1.15;
}

.lede {
  max-width: 680px;
  margin-bottom: 30px;
  color: #33475f;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.button.primary,
button {
  color: var(--white);
  background: var(--blue);
  box-shadow: 0 10px 24px rgba(7, 94, 219, 0.24);
}

.button.secondary {
  color: var(--navy);
  background: var(--white);
  border-color: var(--line);
}

.trust-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-block: 1px solid var(--line);
  background: var(--navy);
  color: var(--white);
}

.trust-band span {
  display: grid;
  place-items: center;
  min-height: 76px;
  padding: 14px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
  color: #dceeff;
  font-weight: 800;
  text-align: center;
}

.section,
.feature-band,
.subscribe {
  padding: clamp(54px, 8vw, 104px) clamp(18px, 5vw, 72px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.8fr);
  gap: clamp(24px, 5vw, 76px);
  align-items: start;
  background: var(--white);
}

.intro p:last-child,
.feature-copy p,
.subscribe p,
article p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
}

.section-heading {
  max-width: 860px;
  margin-bottom: 32px;
}

.brief-grid,
.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

article {
  min-height: 220px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 30px rgba(7, 26, 58, 0.06);
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: 18px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 900;
}

.tag.cyan {
  color: #004f75;
  background: rgba(32, 199, 255, 0.18);
}

.tag.green {
  color: #00604f;
  background: rgba(24, 185, 154, 0.18);
}

.tag.amber {
  color: #744700;
  background: rgba(245, 166, 35, 0.2);
}

.feature-band {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(300px, 1fr);
  gap: clamp(24px, 6vw, 72px);
  align-items: center;
  background: var(--mist);
}

.topic-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.topic-list span {
  display: flex;
  align-items: center;
  min-height: 54px;
  padding: 14px 16px;
  border-left: 4px solid var(--cyan);
  background: var(--white);
  color: #24384e;
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(7, 26, 58, 0.06);
}

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

.audience article {
  min-height: 190px;
}

.subscribe {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(300px, 0.8fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: center;
  background: var(--navy);
  color: var(--white);
}

.subscribe h2,
.subscribe .section-kicker {
  color: var(--white);
}

.subscribe p {
  color: #d3e3f3;
}

form {
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

label {
  display: block;
  margin-bottom: 10px;
  color: #edf7ff;
  font-size: 0.9rem;
  font-weight: 900;
}

.form-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

input {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  background: var(--white);
  color: var(--ink);
  font: inherit;
}

.fine-print {
  margin: 12px 0 0;
  font-size: 0.86rem;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 26px clamp(18px, 5vw, 72px);
  background: #050b15;
  color: #c8d9eb;
}

footer p {
  margin: 0;
}

footer a {
  color: var(--cyan);
  font-weight: 800;
}

@media (max-width: 900px) {
  .hero,
  .intro,
  .feature-band,
  .subscribe {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    background:
      linear-gradient(180deg, rgba(249, 253, 255, 0.98) 0%, rgba(238, 247, 251, 0.9) 64%, rgba(255, 255, 255, 0.76) 100%),
      url("assets/ai-nurse-brief-logo.jpeg") right -90px bottom -110px / 360px auto no-repeat,
      #f9fdff;
  }

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

  .trust-band {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 620px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    width: 100%;
    justify-content: space-between;
  }

  h1 {
    font-size: clamp(2.65rem, 14vw, 4.3rem);
  }

  .brief-grid,
  .audience-grid,
  .topic-list,
  .trust-band,
  .form-row {
    grid-template-columns: 1fr;
  }

  .hero-actions .button,
  button {
    width: 100%;
  }

  footer {
    flex-direction: column;
  }
}