:root {
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #666;
  --color-text-tertiary: #999;
  --color-background-primary: #fff;
  --color-background-secondary: #fafaf8;
  --color-background-tertiary: #f5f5f0;
  --color-border-tertiary: #e5e5e5;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SF Mono", "Fira Code", monospace;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --content-max-width: 1320px;
  --content-padding-x: clamp(16px, 2.5vw, 40px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  background: #0f172a;
  color: var(--color-text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: #534AB7; }

.pv-wrapper { min-height: 100vh; background: #0f172a; }

.pv-container {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 24px var(--content-padding-x) 60px;
  background: var(--color-background-tertiary);
  min-height: 100vh;
  box-shadow: 0 0 80px rgba(0, 0, 0, 0.3);
}

.site-header {
  text-align: center;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border-tertiary);
}

.site-header__brand {
  font-size: 28px;
  font-weight: 700;
  color: #534AB7;
}

.site-header__sub {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: 6px;
}

.site-nav { margin-bottom: 16px; }

.site-nav a {
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.site-nav a:hover { text-decoration: underline; }

.site-phase {
  margin-bottom: 28px;
}

.site-phase__title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 12px;
  padding-left: 12px;
  border-left: 4px solid;
}

.site-session-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-session-list a {
  display: block;
  padding: 14px 18px;
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text-primary);
  transition: border-color 0.15s;
}

.site-session-card {
  display: block;
  padding: 14px 18px;
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-left-width: 4px;
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text-primary);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.site-session-card:hover {
  border-color: #534AB7;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.site-session-card--locked {
  cursor: not-allowed;
  opacity: 0.92;
}

.site-session-card--locked:hover {
  border-color: var(--color-border-tertiary);
  box-shadow: none;
}

.site-session-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.site-session-card__lock-msg {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 8px;
  font-style: italic;
}

.site-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid;
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
}

.site-status-pill__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.site-legend {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  padding: 14px 16px;
  background: var(--color-background-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-tertiary);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.site-session-list a {
  display: block;
}

.site-session-list__meta {
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-top: 4px;
}

.pv-hero {
  border-radius: var(--radius-xl);
  border: 2px solid;
  border-left-width: 6px;
  padding: 32px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.pv-hero__phase {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  flex-shrink: 0;
}

.pv-hero__content { flex: 1; text-align: left; }

.pv-hero__phase-name {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 6px;
}

.pv-hero__title {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 10px;
}

.pv-hero__meta {
  display: flex;
  gap: 8px;
  font-size: 13px;
  flex-wrap: wrap;
}

.pv-hero__status { margin-top: 14px; }

.pv-hero__status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  border: 2px solid;
  font-size: 13px;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.88);
}

.pv-hero__status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.pv-goal {
  display: flex;
  gap: 14px;
  padding: 18px 22px;
  border-left: 4px solid;
  background: var(--color-background-primary);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  margin-bottom: 28px;
}

.pv-goal p { margin-top: 4px; font-size: 15px; }

.pv-goal strong {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-tertiary);
}

.pv-sections {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

details.pv-card {
  background: var(--color-background-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-tertiary);
  overflow: hidden;
}

details.pv-card[open] {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

details.pv-card > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
}

details.pv-card > summary::-webkit-details-marker { display: none; }

.pv-card__number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.pv-card__header-text { flex: 1; min-width: 0; }

.pv-card__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.pv-card__desc {
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin-top: 2px;
}

.pv-card__body {
  padding: 4px 22px 24px 70px;
  font-size: 15px;
  line-height: 1.7;
}

.pv-markdown { text-align: left; }

.pv-markdown h1, .pv-markdown h2, .pv-markdown h3 {
  margin-top: 20px;
  margin-bottom: 8px;
  font-weight: 600;
}

.pv-markdown p { margin-bottom: 12px; }

.pv-markdown ul, .pv-markdown ol {
  padding-left: 24px;
  margin-bottom: 12px;
}

.pv-markdown a { color: #534AB7; text-decoration: underline; }

.pv-markdown img {
  max-width: 100%;
  border-radius: var(--radius-md);
  margin: 12px auto;
  display: block;
}

.markdown-embed {
  width: 100%;
  max-width: 720px;
  margin: 24px auto;
  padding: 0 24px;
  box-sizing: border-box;
}

.markdown-embed--video {
  position: relative;
  aspect-ratio: 16 / 9;
}

.markdown-embed--video iframe {
  position: absolute;
  inset: 0;
  width: calc(100% - 48px);
  left: 24px;
  height: 100%;
  border: none;
  border-radius: var(--radius-md);
}

.pv-markdown iframe {
  display: block;
  width: calc(100% - 48px);
  max-width: 672px;
  margin: 24px auto;
  aspect-ratio: 16 / 9;
  border: none;
  border-radius: var(--radius-md);
}

.pv-empty {
  text-align: center;
  padding: 32px;
  color: var(--color-text-secondary);
}

.pv-footer {
  text-align: center;
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-tertiary);
}

@media (max-width: 768px) {
  .pv-hero { flex-direction: column; padding: 24px; }
  .pv-hero__title { font-size: 20px; }
  .pv-card__body { padding: 4px 16px 20px; }
}