:root {
  color-scheme: dark;
  --bg: #111315;
  --panel: #1a1d20;
  --panel-soft: #22262a;
  --text: #f4f6f8;
  --muted: #aab3bd;
  --line: #31363c;
  --accent: #18d26b;
  --accent-soft: rgba(24, 210, 107, 0.16);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(24, 210, 107, 0.13), transparent 34rem),
    linear-gradient(135deg, #0d0f11 0%, var(--bg) 48%, #1c2024 100%);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), transparent 70%);
}

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

.hero {
  min-height: 54vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 32px 0 24px;
}

.hero-content {
  max-width: 790px;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(3.5rem, 11vw, 8.5rem);
  line-height: 0.9;
  letter-spacing: -0.085em;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1;
  letter-spacing: -0.06em;
}

p {
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.65;
}

.intro-text {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.68;
}

.contact-chip {
  display: inline-flex;
  align-items: center;
  min-height: 1.9em;
  margin: 0 0.18em;
  border: 1px solid rgba(24, 210, 107, 0.34);
  border-radius: 999px;
  padding: 0.18em 0.72em;
  background: linear-gradient(180deg, rgba(24, 210, 107, 0.18), rgba(24, 210, 107, 0.08));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), inset 0 -1px 0 rgba(0, 0, 0, 0.26);
  color: #c8ffd9;
  font: inherit;
  font-size: 0.92em;
  font-weight: 800;
  cursor: pointer;
  vertical-align: baseline;
}

.contact-chip:hover,
.contact-chip:focus-visible {
  border-color: var(--accent);
  outline: none;
  color: var(--text);
}

.contact {
  display: inline-flex;
  align-items: center;
  min-height: 1.9em;
  margin: 0 0.18em;
  border: 1px solid rgba(24, 210, 107, 0.34);
  border-radius: 999px;
  padding: 0.18em 0.72em;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.08em;
  vertical-align: baseline;
}

.contact:empty {
  display: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.directory {
  padding: 18px 0 88px;
}

.section-heading {
  max-width: 680px;
  margin-bottom: 18px;
}

.search-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 20px;
  background: rgba(26, 29, 32, 0.86);
  color: var(--text);
  font: inherit;
  font-size: 1.05rem;
  outline: none;
  box-shadow: var(--shadow);
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft), var(--shadow);
}

.group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.group-card {
  display: flex;
  flex-direction: column;
  min-height: 300px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(34, 38, 42, 0.96), rgba(26, 29, 32, 0.96));
  box-shadow: var(--shadow);
}

.group-card h3 {
  margin: 0 0 10px;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.group-card p {
  margin-bottom: 18px;
  font-size: 0.98rem;
}

.keyword-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.keyword-list li {
  border: 1px solid rgba(24, 210, 107, 0.28);
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--accent-soft);
  color: #c8ffd9;
  font-size: 0.8rem;
}

.admin-action {
  margin-top: auto;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.admin-note {
  margin-bottom: 12px;
  font-size: 0.88rem;
  line-height: 1.45;
}

.admin-button {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(24, 210, 107, 0.34);
  border-radius: 999px;
  padding: 10px 13px;
  background: linear-gradient(180deg, rgba(24, 210, 107, 0.18), rgba(24, 210, 107, 0.08));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), inset 0 -1px 0 rgba(0, 0, 0, 0.26);
  color: #c8ffd9;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
}

.admin-button:hover,
.admin-button:focus-visible {
  border-color: var(--accent);
  outline: none;
  color: var(--text);
}

.admin-id {
  display: inline-flex;
  align-items: center;
  min-height: 2.45rem;
  margin-left: 8px;
  border: 1px solid rgba(24, 210, 107, 0.34);
  border-radius: 999px;
  padding: 10px 13px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.08em;
}

.admin-id:empty {
  display: none;
}

.empty-state {
  padding: 24px;
  border: 1px dashed var(--line);
  border-radius: 20px;
  text-align: center;
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 22px, 1120px);
  }

  .hero {
    min-height: auto;
    padding-top: 48px;
  }
}