/* ===== Variables ===== */
:root {
  --bg: #fffcf3;
  --bg-muted: #fbf2d7;
  --ink: #3a2f26;
  --ink-soft: #6b5842;
  --line: #ead9a8;
  --accent: #b8731e;
  --accent-soft: #e8c98a;
  --pudding: #f5cf7a;
  --pudding-deep: #d9a94a;
  --caramel: #8b5a2b;
  --card: #ffffff;
  --shadow: 0 2px 12px rgba(107, 88, 66, 0.08);
  --shadow-hover: 0 6px 24px rgba(107, 88, 66, 0.15);
  --radius: 12px;
  --font-sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", sans-serif;
  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", serif;
  --font-display: "Playfair Display", "Noto Serif JP", serif;
}

/* ===== Reset ===== */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { margin: 0; font-weight: 700; }
p { margin: 0 0 1em; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font-family: inherit; cursor: pointer; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}
.container.narrow { max-width: 720px; }
.container.center { text-align: center; }
.sp-only { display: inline; }
@media (min-width: 768px) { .sp-only { display: none; } }

/* ===== Header ===== */
.site-header {
  background: rgba(253, 250, 244, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}
.brand:hover { text-decoration: none; opacity: 0.85; }
.brand-mark { width: 48px; height: 38px; flex-shrink: 0; }
.brand-mark svg { width: 100%; height: 100%; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.brand-sub {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.72rem;
  color: var(--ink-soft);
  letter-spacing: 0.06em;
  margin-top: 2px;
}
.site-nav { display: none; gap: 24px; }
.site-nav a {
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 500;
}
@media (min-width: 900px) { .site-nav { display: flex; } }

/* ===== Hero ===== */
.hero {
  background: var(--bg-muted);
  line-height: 0;
}
.hero-image { display: block; }
.hero-image img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 80vh;
  object-fit: cover;
  object-position: center;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== Section ===== */
.section { padding: 80px 0; }
.section-muted { background: var(--bg-muted); }
.section-eyebrow {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin: 0 0 12px;
  text-transform: uppercase;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 32px;
  line-height: 1.5;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
}
.section-title .count {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--ink-soft);
  font-family: var(--font-sans);
}

/* ===== Story ===== */
.story-body p {
  font-size: 1.02rem;
  line-height: 2;
  color: var(--ink);
}
.story-body strong { color: var(--accent); font-weight: 700; }
.story-body .quote {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  text-align: center;
  padding: 32px 16px;
  margin: 32px 0;
  position: relative;
  color: var(--caramel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-weight: 500;
  line-height: 1.7;
}

/* ===== Philosophy ===== */
.philosophy-list {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .philosophy-list { grid-template-columns: repeat(3, 1fr); }
}
.philosophy-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  position: relative;
}
.philosophy-no {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 2.5rem;
  color: var(--pudding-deep);
  line-height: 1;
  margin-bottom: 16px;
  display: block;
}
.philosophy-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.5;
  margin-bottom: 14px;
  color: var(--ink);
}
.philosophy-body {
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--ink-soft);
  margin: 0;
}

/* ===== Timeline ===== */
.timeline {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .timeline { grid-template-columns: repeat(3, 1fr); }
}
.event-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.event-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--pudding) 0%, var(--pudding-deep) 100%);
}
.event-no {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--pudding-deep);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.event-date {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--ink-soft);
  margin: 4px 0 14px;
  font-weight: 500;
}
.event-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.45;
  margin-bottom: 14px;
  color: var(--ink);
}
.event-meta {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-bottom: 14px;
  padding: 10px 14px;
  background: var(--bg);
  border-radius: 8px;
  border: 1px dashed var(--line);
}
.event-meta div + div { margin-top: 4px; }
.event-meta .label { color: var(--accent); font-weight: 500; margin-right: 4px; }
.event-highlights {
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--ink);
  margin: 0 0 16px;
}
.event-pdf {
  display: inline-block;
  font-size: 0.82rem;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink-soft);
  background: var(--bg);
  transition: all 0.2s;
  text-decoration: none;
}
.event-pdf:hover {
  border-color: var(--pudding-deep);
  color: var(--accent);
  background: var(--card);
  text-decoration: none;
}

/* ===== Filter ===== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}
.filter-btn {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.filter-btn.is-active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* ===== Participants ===== */
.participants-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.participant-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
}
.participant-card:hover {
  border-color: var(--pudding-deep);
  box-shadow: var(--shadow);
  text-decoration: none;
  transform: translateY(-2px);
}
.participant-card.is-hidden { display: none; }
.participant-arrow {
  margin-top: 10px;
  font-size: 0.72rem;
  color: var(--accent);
  opacity: 0.7;
  transition: opacity 0.2s;
}
.participant-card:hover .participant-arrow { opacity: 1; }
.participant-name {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 8px;
  font-weight: 500;
}
.participant-events {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.event-badge {
  display: inline-block;
  font-size: 0.68rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--bg-muted);
  color: var(--ink-soft);
  font-weight: 500;
}
.event-badge.active {
  background: var(--pudding);
  color: var(--caramel);
}

/* ===== Future ===== */
.future-lead {
  text-align: center;
  font-size: 1rem;
  line-height: 2;
  color: var(--ink-soft);
  padding: 32px 24px;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px dashed var(--line);
  margin: 0;
}

/* ===== Partners ===== */
.partners-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
}
.partner-card {
  background: var(--card);
  padding: 20px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}
.partner-role {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
  text-transform: uppercase;
}
.partner-name {
  font-family: var(--font-serif);
  font-size: 1.02rem;
  color: var(--ink);
  margin-bottom: 4px;
  font-weight: 500;
}
.partner-phone {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

/* ===== Related / CTA ===== */
.related-lead {
  color: var(--ink-soft);
  margin-bottom: 20px;
}
.cta {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.2s;
}
.cta:hover {
  background: #8e5a16;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--ink);
  color: #d8cdb8;
  padding: 40px 0;
  text-align: center;
  font-size: 0.85rem;
}
.footer-title {
  font-family: var(--font-serif);
  color: #f0e5ce;
  margin-bottom: 8px;
}
.footer-note {
  font-size: 0.78rem;
  opacity: 0.75;
  line-height: 1.7;
  margin-bottom: 12px;
}
.updated { opacity: 0.55; font-size: 0.72rem; margin: 0; }