:root {
  --forest: #1a5c38;
  --forest-mid: #2d7a4f;
  --forest-light: #3d9e68;
  --sage: #7aaa8a;
  --mint: #c8e6d5;
  --mist: #e8f4ed;
  --snow: #f4f9f6;
  --cream: #faf8f4;
  --gold: #c8a85a;
  --gold-light: #e8d4a0;
  --charcoal: #1e2820;
  --slate: #3d4d42;
  --warm-gray: #8a9490;
  --white: #ffffff;
  --alert-orange: #e05a2b;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--charcoal);
  line-height: 2;
  background-color: var(--white);
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
.font-serif {
  font-family: 'Noto Serif JP', serif;
  line-height: 1.4;
}

.montserrat {
  font-family: 'Montserrat', sans-serif;
  letter-spacing: 0.1em;
}

.cormorant {
  font-family: 'Cormorant Garamond', serif;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 60px;
  padding-right: 60px;
}

@media (max-width: 900px) {
  .container {
    padding-left: 32px;
    padding-right: 32px;
  }
}

section {
  padding: 100px 0;
}

[x-cloak] {
  display: none !important;
}

/* Material Symbols */
.material-symbols-outlined {
  font-variation-settings:
    'FILL' 0,
    'wght' 400,
    'GRAD' 0,
    'opsz' 24;
  vertical-align: middle;
}

/* Animations */
@keyframes pulse-alert {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}
.animate-pulse-alert {
  animation: pulse-alert 1.5s ease-in-out infinite;
}

.subhero {
  background-size: cover;
  background-position: center;
  min-height: 300px;
  display: flex;
  align-items: center;
  color: white;
  position: relative;
}
.subhero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(13, 46, 26, 0.6);
}
.subhero > div {
  position: relative;
  z-index: 1;
}

/* Extracted from Templates */
/* From ./parts/index-hero.html */

.hero-section {
  min-height: 100vh;
  background: linear-gradient(135deg, #0d2e1a 0%, #1a5c38 50%, #3d9e68 100%);
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 56px; /* Header height */
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.04;
  pointer-events: none;
}

.hero-bg-photo {
  position: absolute;
  inset: 0;
  background-image: url('../img/index-hero-bg.jpg');
  background-size: cover;
  background-position: center;
  mix-blend-mode: multiply;
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 10;
  width: 100%;
}

/* 修正: テキストから画像への差し替えに伴う調整 */
.hero-title-img {
  width: 100%;
  max-width: 540px;
  height: auto;
  display: block;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.2));
}

.hero-title-sub {
  font-size: clamp(18px, 3vw, 28px);
  letter-spacing: 0.05em;
}

.hero-card {
  background: var(--white);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
  border-radius: 2px;
  overflow: hidden;
}

.hero-card-header {
  background: var(--forest);
  color: var(--white);
  padding: 1.5rem;
  text-align: center;
}

.hero-card-body {
  padding: 2rem;
}

.fade-up {
  opacity: 0;
  transform: translateY(24px);
}

/* From ./parts/index-about.html */

.index-about {
  background-color: var(--white);
  overflow: hidden;
}
.index-about .section-tag {
  display: inline-block;
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.index-about .headline {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.3;
  margin-bottom: 2.5rem;
  color: var(--charcoal);
}
.index-about .headline span {
  position: relative;
  display: inline-block;
}
.index-about .headline span::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 8px;
  background-color: var(--mint);
  z-index: -1;
}
.index-about .stats-box {
  border-left: 3px solid var(--forest);
  padding-left: 1.5rem;
  margin-bottom: 2.5rem;
}
.index-about .stats-number {
  font-family: 'Montserrat', sans-serif;
  font-size: 3rem;
  font-weight: 800;
  color: var(--forest);
  line-height: 1;
  display: block;
}
.index-about .stats-label {
  font-size: 0.75rem;
  color: var(--slate);
  font-weight: 700;
}
.index-about .body-text {
  font-size: 0.875rem;
  color: var(--slate);
  max-width: 480px;
}
.index-about .image-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
}
.index-about .main-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px; /* デザインガイド未定義のため標準的な角丸を指定 */
}

@media (max-width: 900px) {
  .index-about .image-container {
    aspect-ratio: 16/9;
  }
}

/* From ./parts/index-solar.html */

.solar-section {
  /* 背景グラデーションは維持（リクエストにより変更なし） */
  background: linear-gradient(135deg, #c8a85a 0%, #e8c86a 50%, #c8a85a 100%);
  position: relative;
  overflow: hidden;
}
.solar-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    45deg,
    rgba(255, 255, 255, 0.1) 0,
    rgba(255, 255, 255, 0.1) 1px,
    transparent 0,
    transparent 50%
  );
  background-size: 10px 10px;
  pointer-events: none;
}
.solar-orbit-container {
  position: relative;
  width: 100%;
  max-width: 500px;
  aspect-ratio: 1/1;
  margin: 0 auto;
}
.solar-orbit {
  position: absolute;
  inset: 0;
  border: 1px dashed rgba(26, 92, 56, 0.2);
  border-radius: 50%;
}
.orbit-outer {
  animation: rotate-solar 16s linear infinite;
}
.orbit-inner {
  inset: 15%;
  animation: rotate-solar 10s linear infinite reverse;
}
@keyframes rotate-solar {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}
.orbit-dot {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot-sun {
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gold);
  box-shadow: 0 0 15px var(--gold);
}
.dot-bolt {
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--forest);
}

/* From ./parts/index-experience.html */

.experience-section {
  background-color: var(--snow);
  position: relative;
  overflow: hidden;
}

.exp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .exp-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .exp-grid {
    grid-template-columns: 1fr;
  }
}

.exp-card {
  background: var(--white);
  border-radius: var(--border_radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.exp-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
}

.exp-card.featured {
  grid-column: span 2;
  background-color: var(--charcoal);
  color: var(--white);
}

@media (max-width: 900px) {
  .exp-card.featured {
    grid-column: span 2;
  }
}

@media (max-width: 600px) {
  .exp-card.featured {
    grid-column: span 1;
  }
}

.exp-card-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  background-color: var(--mist);
}

.featured .exp-card-img {
  aspect-ratio: 16/7;
}

.exp-card-content {
  padding: 24px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.exp-card-tag {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: inline-block;
}

.exp-card-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
}

.exp-card-desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

.featured .exp-card-desc {
  color: var(--warm-gray);
}

.badge-solar {
  border: 2px solid var(--gold);
}

.status-badge {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 2px;
  font-weight: bold;
  margin-left: 8px;
}

/* From ./parts/index-lecture.html */

.lecture-section {
  background-color: var(--white);
  overflow: hidden;
}

.lecture-container {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.lecture-speaker {
  background-color: var(--charcoal);
  color: var(--white);
  padding: 60px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.speaker-photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--forest-mid);
  margin-bottom: 24px;
  background-color: var(--slate);
}

.speaker-label {
  background-color: var(--gold);
  color: var(--charcoal);
  font-size: 10px;
  font-weight: 800;
  padding: 2px 12px;
  border-radius: 2px;
  margin-bottom: 16px;
}

.lecture-content {
  background-color: var(--white);
  padding: 60px;
  position: relative;
}

.lecture-title-box {
  border-left: 4px solid var(--forest);
  padding-left: 24px;
  margin-bottom: 32px;
}

.lecture-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}

.lecture-item {
  display: flex;
  gap: 16px;
}

.lecture-number {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  color: var(--gold);
  font-size: 20px;
  line-height: 1;
}

@media (max-width: 900px) {
  .lecture-container {
    grid-template-columns: 1fr;
  }
  .lecture-content {
    padding: 40px 32px;
  }
  .lecture-grid {
    grid-template-columns: 1fr;
  }
}

/* From ./parts/index-program.html */

.program-section {
  background: linear-gradient(180deg, var(--snow) 0%, var(--mist) 100%);
  position: relative;
}
.program-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.program-block {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}
.program-header {
  background: var(--forest);
  color: var(--white);
  padding: 16px 24px;
}
.program-table {
  width: 100%;
  border-collapse: collapse;
}
.program-row {
  border-bottom: 1px solid var(--mist);
  transition: background-color 0.3s ease;
}
.program-row:last-child {
  border-bottom: none;
}
.program-row:hover {
  background-color: var(--snow);
}
.program-time {
  width: 120px;
  padding: 20px 24px;
  color: var(--forest);
  font-weight: 700;
  font-size: 0.875rem;
}
.program-content {
  padding: 20px 24px;
  font-size: 0.9375rem;
  line-height: 1.6;
}
.program-row.highlight {
  background-color: var(--mist);
  border-left: 4px solid var(--forest);
}
.badge-climax {
  display: inline-block;
  background: var(--gold);
  color: var(--charcoal);
  font-size: 10px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 2px;
  margin-left: 8px;
  vertical-align: middle;
}
@media (max-width: 900px) {
  .program-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* From ./parts/index-finale.html */

.finale-section {
  background-color: var(--forest);
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* 星空のような演出（任意アニメーション） */
.finale-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.05) 2px, transparent 2px);
  background-size: 100px 100px;
  opacity: 0.5;
}

.finale-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  filter: drop-shadow(0 0 15px rgba(232, 212, 160, 0.8));
  display: inline-block;
}

.finale-time {
  display: block;
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--gold);
  margin: 1rem 0;
}

.finale-badge {
  display: inline-block;
  border: 1px solid var(--gold-light);
  padding: 0.5rem 1.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  margin-top: 2rem;
}

/* From ./parts/index-access.html */

#access {
  background-color: var(--white);
}
.access-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: start;
}
.map-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background-color: var(--mist);
  border-radius: var(--border_radius);
  overflow: hidden;
  box-shadow: var(--card);
}
.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: grayscale(0.2) contrast(1.1);
}
.info-table {
  width: 100%;
  border-collapse: collapse;
}
.info-table tr {
  border-bottom: 1px solid var(--mist);
}
.info-table th {
  width: 80px;
  padding: 20px 0;
  text-align: left;
  vertical-align: top;
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
}
.info-table td {
  padding: 20px 0 20px 20px;
  font-size: 14px;
  color: var(--charcoal);
  line-height: 1.8;
}
.access-cta {
  margin-top: 40px;
}
.btn-map {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background-color: var(--forest);
  color: var(--white);
  padding: 16px 32px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
}
.btn-map:hover {
  background-color: var(--forest-mid);
  transform: translateY(-2px);
}

@media (max-width: 900px) {
  .access-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .map-container {
    aspect-ratio: 16 / 9;
  }
  .info-table td {
    padding-left: 10px;
    font-size: 13px;
  }
}

/* From ./parts/index-sns.html */

.sns-section {
  background-color: var(--snow);
  text-align: center;
}

.sns-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 40px 0;
}

.sns-item {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: var(--border_radius, 4px);
  box-shadow: var(--card);
  transition: transform 0.3s ease;
}

.sns-item:hover {
  transform: scale(1.02);
}

.sns-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sns-handle {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--forest);
}

.sns-follow-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--white);
  color: var(--charcoal);
  border: 1px solid var(--mint);
  padding: 12px 32px;
  border-radius: 2px;
  font-weight: 700;
  font-size: 14px;
  transition: all 0.3s ease;
  text-decoration: none;
}

.sns-follow-btn:hover {
  background-color: var(--forest);
  color: var(--white);
  border-color: var(--forest);
  box-shadow: var(--elevated);
}

@media (max-width: 900px) {
  .sns-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
}
/* Instagram Embed 用の追記 */
.sns-grid--embed {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
}

.sns-item--embed {
  aspect-ratio: auto;
  background: transparent;
  overflow: visible;
  box-shadow: none;
  transform: none;
}

.sns-item--embed:hover {
  transform: none;
}

.sns-item--embed .instagram-media {
  margin: 0 !important;
  min-width: 100% !important;
  width: 100% !important;
  max-width: 100% !important;
  border-radius: 4px !important;
}

.sns-item--embed iframe {
  width: 100% !important;
}

@media (max-width: 900px) {
  .sns-grid--embed {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* Instagram Embed 用の追記 */
.sns-grid--embed {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin: 40px 0;
  align-items: start;
}

.sns-item--embed {
  aspect-ratio: auto;
  overflow: visible;
  border-radius: 0;
  box-shadow: none;
  background: transparent;
}

.sns-item--embed:hover {
  transform: none;
}

.sns-item--embed .instagram-media {
  margin: 0 !important;
  width: 100% !important;
  max-width: 100% !important;
  min-width: 0 !important;
  background: #fff !important;
}

.sns-item--embed iframe {
  width: 100% !important;
}

@media (max-width: 900px) {
  .sns-grid--embed {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (max-width: 600px) {
  .sns-grid--embed {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}