:root {
  color-scheme: light;
  --bg: #f6f1ea;
  --panel: #ffffff;
  --panel-2: #fbf7f2;
  --text: #1f2328;
  --muted: rgba(31, 35, 40, .66);
  --line: rgba(31, 35, 40, .08);
  --brand: #fe2c55;
  --brand-2: #ff6d8a;
  --ok: #1f9d72;
  --warn: #c88a00;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(circle at 50% -10%, #fff8f2 0%, var(--bg) 58%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
}

a { color: inherit; }

.site-shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 34px 0 56px;
}

.site-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 28px;
}

.brand-lockup {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand-lockup strong {
  font-size: 18px;
  letter-spacing: .04em;
}

.brand-lockup span,
.muted {
  color: var(--muted);
}

.nav-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.nav-links a,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .04);
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  cursor: pointer;
}

.btn--primary {
  border-color: var(--brand);
  background: var(--brand);
  color: #fff;
  font-weight: 600;
}

.btn--ghost { background: transparent; }

.hero {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 24px;
  align-items: stretch;
  margin-bottom: 24px;
}

.hero-card,
.panel {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,.95), rgba(251,247,242,.96));
  box-shadow: 0 18px 50px rgba(78, 51, 28, .08);
}

.hero-card {
  padding: 36px;
}

.hero-card h1 {
  margin: 0 0 16px;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.06;
  letter-spacing: -.04em;
}

.hero-card p {
  margin: 0;
  max-width: 680px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding: 18px;
}

.stat {
  min-height: 108px;
  padding: 18px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--line);
}

.stat b {
  display: block;
  font-size: 30px;
  margin-bottom: 8px;
}

.stat span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.panel {
  padding: 22px;
  margin-top: 18px;
}

.panel h2,
.panel h3 {
  margin: 0 0 14px;
}

.condition-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}

.condition-card {
  display: flex;
  min-height: 160px;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  padding: 18px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--line);
  text-decoration: none;
}

.condition-card b { line-height: 1.45; }
.condition-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.condition-card small { color: var(--brand-2); }

.entry-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 24px;
  align-items: start;
}

.entry-layout--single {
  grid-template-columns: minmax(0, 560px);
  justify-content: center;
}

.participant-topbar {
  width: min(560px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.entry-card {
  padding: 28px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(251,247,242,.98));
  border: 1px solid var(--line);
}

.entry-card h1 { margin: 0 0 10px; font-size: 28px; }
.entry-card p { color: var(--muted); line-height: 1.8; }

.participant-entry-card {
  min-height: min(720px, calc(100vh - 132px));
  display: flex;
  flex-direction: column;
}

.participant-submit {
  width: 100%;
}

.form-row { margin: 18px 0; }
.form-row label { display: block; margin-bottom: 8px; color: rgba(31,35,40,.88); }
.form-row input {
  width: 100%;
  min-height: 44px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  padding: 0 12px;
  font-size: 15px;
}

.category-grid {
  display: grid;
  gap: 12px;
  margin: 18px 0 10px;
}

.category-option {
  display: block;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  cursor: pointer;
}

.category-option input { margin-right: 8px; }
.category-option strong { display: inline-block; margin-bottom: 5px; }
.category-option span { display: block; color: var(--muted); font-size: 13px; line-height: 1.55; }
.category-option:has(input:checked) {
  border-color: rgba(254,44,85,.8);
  background: rgba(254,44,85,.08);
}

.side-summary {
  position: sticky;
  top: 20px;
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(251,247,242,.98));
  border: 1px solid var(--line);
}

.side-summary dl { margin: 0; display: grid; gap: 12px; }
.side-summary dt { color: var(--muted); font-size: 12px; }
.side-summary dd { margin: 3px 0 0; line-height: 1.5; }

.notice {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(255,198,77,.12);
  border: 1px solid rgba(255,198,77,.22);
  color: rgba(31,35,40,.82);
  font-size: 13px;
  line-height: 1.6;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
}

.admin-table th,
.admin-table td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 13px;
}

.admin-table th { color: var(--muted); font-weight: 500; }

.codebox {
  margin: 12px 0 0;
  padding: 12px;
  border-radius: 12px;
  background: #050506;
  border: 1px solid var(--line);
  color: rgba(255,255,255,.78);
  white-space: pre-wrap;
  overflow: auto;
}

@media (max-width: 860px) {
  html, body {
    background: #f6f1ea;
  }

  .site-shell {
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    padding: max(18px, env(safe-area-inset-top)) 14px max(24px, env(safe-area-inset-bottom));
  }

  .hero,
  .entry-layout { grid-template-columns: 1fr; }

  .site-topbar {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 16px;
  }

  .nav-links {
    width: 100%;
  }

  .nav-links a,
  .nav-links button,
  .btn {
    min-height: 44px;
    padding: 0 14px;
  }

  .hero-card,
  .panel,
  .entry-card,
  .side-summary {
    border-radius: 20px;
    box-shadow: none;
  }

  .hero-card,
  .entry-card {
    padding: 22px;
  }

  .hero-card h1,
  .entry-card h1 {
    font-size: 26px;
    line-height: 1.18;
    letter-spacing: -.02em;
  }

  .category-option {
    min-height: 76px;
    padding: 15px;
  }

  .side-summary { position: static; }
}

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

  .condition-card {
    min-height: 132px;
  }
}