:root {
  --bg: #f5fbfb;
  --surface: #ffffff;
  --surface-soft: #eaf8f4;
  --text: #14213d;
  --muted: #607086;
  --primary: #21a9a3;
  --primary-dark: #087b7b;
  --accent: #7c7cff;
  --line: #d9ece9;
  --shadow: 0 24px 60px rgba(28, 93, 110, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
  background:
    radial-gradient(circle at top left, rgba(124, 124, 255, 0.18), transparent 34rem),
    radial-gradient(circle at 78% 12%, rgba(33, 169, 163, 0.24), transparent 28rem),
    var(--bg);
}

a {
  color: inherit;
}

.site-header,
.site-footer {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 14px;
  box-shadow: 0 12px 28px rgba(33, 169, 163, 0.28);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 18px;
  color: var(--muted);
  font-size: 0.94rem;
}

.site-nav a,
.site-footer a {
  text-decoration: none;
}

.site-nav a:hover,
.site-footer a:hover {
  color: var(--primary-dark);
}

main {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 48px;
  align-items: center;
  padding: 72px 0 56px;
}

.hero-copy h1,
.page-hero h1 {
  margin: 0;
  letter-spacing: -0.04em;
  line-height: 1.12;
  font-size: clamp(2.8rem, 8vw, 5.4rem);
}

.lead {
  max-width: 680px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.22rem);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--primary-dark);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

.button.primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 14px 28px rgba(8, 123, 123, 0.24);
}

.button.secondary {
  color: var(--primary-dark);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
}

.room-card {
  position: relative;
  overflow: hidden;
  padding: 28px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 34px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.room-card::before {
  position: absolute;
  inset: -40% -20% auto auto;
  width: 260px;
  height: 260px;
  content: "";
  background: radial-gradient(circle, rgba(124, 124, 255, 0.24), transparent 66%);
}

.room-card-header {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-weight: 700;
}

.status-dot {
  width: 10px;
  height: 10px;
  background: #39d98a;
  border-radius: 50%;
  box-shadow: 0 0 0 8px rgba(57, 217, 138, 0.16);
}

.room-title {
  position: relative;
  margin: 36px 0 18px;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.04em;
}

.study-meter {
  position: relative;
  height: 12px;
  overflow: hidden;
  background: #dff1ef;
  border-radius: 999px;
}

.study-meter span {
  display: block;
  width: 72%;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: inherit;
}

.stats-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 26px 0 0;
}

.stats-grid div {
  padding: 16px;
  background: var(--surface-soft);
  border-radius: 20px;
}

.stats-grid dt {
  color: var(--muted);
  font-size: 0.82rem;
}

.stats-grid dd {
  margin: 2px 0 0;
  font-size: 1.28rem;
  font-weight: 900;
}

.section {
  padding: 72px 0;
}

.intro {
  padding: 28px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: 28px;
}

.intro p,
.text-card p {
  margin: 0;
}

.section-heading {
  max-width: 680px;
  margin-bottom: 28px;
}

.section h2,
.policy h2 {
  margin: 0;
  letter-spacing: -0.03em;
  line-height: 1.25;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feature-card,
.text-card,
.policy {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 14px 38px rgba(28, 93, 110, 0.08);
}

.feature-card {
  padding: 22px;
  border-radius: 26px;
}

.feature-card h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

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

.split {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 32px;
  align-items: start;
}

.text-card {
  padding: 28px;
  color: var(--muted);
  border-radius: 28px;
}

.page-hero {
  padding: 70px 0 34px;
}

.page-hero p:last-child {
  max-width: 720px;
  color: var(--muted);
}

.policy {
  margin-bottom: 72px;
  padding: clamp(24px, 5vw, 48px);
  border-radius: 30px;
}

.policy section + section {
  margin-top: 36px;
}

.policy h2 {
  margin-bottom: 12px;
  font-size: clamp(1.35rem, 3vw, 1.8rem);
}

.policy p,
.policy li {
  color: var(--muted);
}

.policy ul {
  margin: 12px 0 0;
  padding-left: 1.2em;
}

.policy-date {
  margin-top: 0;
  font-weight: 700;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 920px) {
  .hero,
  .split {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .hero {
    padding-top: 40px;
  }

  .room-card {
    padding: 22px;
  }

  .stats-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }
}