@charset "UTF-8";
/* ============================================
   TimeSkip Giant Kelp Project
   Sustainability Page Stylesheet
   ============================================ */

/* CSS Variables - 全てローカルスコープに */
.sustainability-page {
  --ts-kelp-deep: #0a2620;
  --ts-kelp-dark: #0f3d33;
  --ts-kelp-mid: #1a5a4a;
  --ts-kelp-light: #2d7d6a;
  --ts-teal-bright: #4ab3a0;
  --ts-teal-pale: #a8d8cc;
  --ts-sand: #f4ede0;
  --ts-sand-warm: #ebe0c8;
  --ts-cream: #fbf7ee;
  --ts-coral: #e87a5d;
  --ts-ink: #0a2620;
  --ts-ink-soft: #2a4d44;
  --ts-ink-muted: #5a7770;

  font-family: 'Noto Serif JP', 'Shippori Mincho', serif;
  background: var(--ts-cream);
  color: var(--ts-ink);
  line-height: 1.85;
  overflow-x: hidden;
}

.sustainability-page * {
  box-sizing: border-box;
}

/* ============================================
   Hero
   ============================================ */

.ts-sus-hero {
  min-height: 100vh;
  position: relative;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(74, 179, 160, 0.15) 0%, transparent 60%),
    linear-gradient(180deg, #0a2620 0%, #0f3d33 40%, #1a5a4a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0 40px;
}

.ts-sus-hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 120%;
  height: 80%;
  background:
    linear-gradient(180deg,
      rgba(255, 248, 220, 0.12) 0%,
      rgba(168, 216, 204, 0.05) 40%,
      transparent 100%);
  filter: blur(40px);
  pointer-events: none;
}

.ts-sus-kelp-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.18;
}

.ts-sus-hero-content {
  position: relative;
  text-align: center;
  z-index: 2;
  max-width: 900px;
}

.ts-sus-hero-tag {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  color: var(--ts-teal-pale);
  font-size: 18px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 32px;
  opacity: 0;
  animation: tsSusFadeUp 1.2s 0.3s ease-out forwards;
}

.ts-sus-hero-title {
  font-family: 'Shippori Mincho', serif;
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.3;
  color: var(--ts-cream);
  font-weight: 500;
  letter-spacing: 0.05em;
  margin: 0 0 40px;
  opacity: 0;
  animation: tsSusFadeUp 1.2s 0.6s ease-out forwards;
}

.ts-sus-hero-title em {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  color: var(--ts-teal-bright);
  font-weight: 400;
}

.ts-sus-hero-subtitle {
  font-size: 17px;
  color: var(--ts-teal-pale);
  letter-spacing: 0.1em;
  line-height: 2;
  margin: 0;
  opacity: 0;
  animation: tsSusFadeUp 1.2s 0.9s ease-out forwards;
}

.ts-sus-hero-subtitle-en {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.2em;
}

.ts-sus-hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--ts-teal-pale);
  font-size: 11px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  opacity: 0;
  animation: tsSusFadeUp 1.2s 1.5s ease-out forwards;
}

.ts-sus-hero-scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 60px;
  background: linear-gradient(180deg, var(--ts-teal-pale), transparent);
  margin: 16px auto 0;
  animation: tsSusScrollLine 2s ease-in-out infinite;
}

@keyframes tsSusFadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes tsSusScrollLine {
  0%, 100% { transform: scaleY(0.5); opacity: 0.5; }
  50% { transform: scaleY(1); opacity: 1; }
}

/* ============================================
   Section Common
   ============================================ */

.sustainability-page > main > section,
.sustainability-page section {
  padding: 120px 40px;
  position: relative;
}

.sustainability-page .ts-sus-hero {
  padding: 0 40px;
}

.ts-sus-container {
  max-width: 1100px;
  margin: 0 auto;
}

.ts-sus-section-number {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 14px;
  color: var(--ts-coral);
  letter-spacing: 0.3em;
  margin-bottom: 16px;
  display: block;
}

.ts-sus-section-title {
  font-family: 'Shippori Mincho', serif;
  font-size: clamp(28px, 4vw, 42px);
  color: var(--ts-kelp-deep);
  font-weight: 500;
  letter-spacing: 0.05em;
  line-height: 1.4;
  margin: 0 0 48px;
}

.ts-sus-section-title em {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  color: var(--ts-kelp-mid);
  font-weight: 400;
}

/* ============================================
   Section 01: Philosophy
   ============================================ */

.ts-sus-philosophy {
  background: var(--ts-cream);
}

.ts-sus-philosophy-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 80px;
  align-items: start;
}

.ts-sus-philosophy-text p {
  font-size: 17px;
  line-height: 2.1;
  color: var(--ts-ink-soft);
  margin: 0 0 28px;
}

.ts-sus-philosophy-text p strong {
  color: var(--ts-kelp-deep);
  font-weight: 500;
}

.ts-sus-mission-quote {
  background: linear-gradient(135deg, var(--ts-kelp-deep) 0%, var(--ts-kelp-mid) 100%);
  color: var(--ts-cream);
  padding: 60px 48px;
  position: relative;
  border-radius: 4px;
}

.ts-sus-mission-quote::before {
  content: '"';
  position: absolute;
  top: 12px;
  left: 24px;
  font-family: 'Cormorant Garamond', serif;
  font-size: 100px;
  color: var(--ts-teal-bright);
  opacity: 0.3;
  line-height: 1;
}

.ts-sus-mission-label {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--ts-teal-bright);
  text-transform: uppercase;
  margin-bottom: 20px;
}

.ts-sus-mission-text {
  font-family: 'Shippori Mincho', serif;
  font-size: 24px;
  line-height: 1.7;
  font-weight: 500;
  letter-spacing: 0.05em;
}

/* ============================================
   Section 02: Representative Voice
   ============================================ */

.ts-sus-representative {
  background: var(--ts-sand);
  position: relative;
  overflow: hidden;
}

.ts-sus-representative::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 90% 10%, rgba(74, 179, 160, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 10% 90%, rgba(232, 122, 93, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.ts-sus-rep-grid {
  max-width: 820px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.ts-sus-rep-content {
  position: relative;
  text-align: left;
}

.ts-sus-rep-ornament {
  font-family: 'Cormorant Garamond', serif;
  font-size: 120px;
  line-height: 1;
  color: var(--ts-kelp-mid);
  opacity: 0.18;
  position: absolute;
  top: -40px;
  left: -20px;
  pointer-events: none;
  font-style: italic;
}

.ts-sus-rep-label {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 14px;
  color: var(--ts-coral);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.ts-sus-rep-headline {
  font-family: 'Shippori Mincho', serif;
  font-size: clamp(26px, 3vw, 34px);
  color: var(--ts-kelp-deep);
  line-height: 1.6;
  margin: 0 0 36px;
  font-weight: 500;
}

.ts-sus-rep-headline em {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  color: var(--ts-kelp-mid);
}

.ts-sus-rep-text {
  font-size: 16px;
  line-height: 2.1;
  color: var(--ts-ink-soft);
  margin: 0 0 24px;
}

.ts-sus-rep-signature {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid rgba(10, 38, 32, 0.15);
}

.ts-sus-rep-signature-line {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 14px;
  color: var(--ts-ink-muted);
  letter-spacing: 0.1em;
}

.ts-sus-rep-signature-name {
  font-family: 'Shippori Mincho', serif;
  font-size: 18px;
  color: var(--ts-kelp-deep);
  font-weight: 500;
}

/* ============================================
   Section 03: Why Sea Otter
   ============================================ */

.ts-sus-why-otter {
  background: var(--ts-cream);
}

.ts-sus-diagram-intro {
  max-width: 700px;
  margin-bottom: 64px;
}

.ts-sus-diagram-intro p {
  font-size: 17px;
  line-height: 2.1;
  color: var(--ts-ink-soft);
  margin: 0;
}

.ts-sus-diagram-intro strong {
  color: var(--ts-kelp-deep);
  font-weight: 500;
}

.ts-sus-diagram-container {
  background: var(--ts-sand);
  border-radius: 4px;
  padding: 56px 40px;
  position: relative;
  box-shadow: 0 20px 40px -20px rgba(10, 38, 32, 0.15);
}

.ts-sus-diagram-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.ts-sus-diagram-side h3 {
  font-family: 'Shippori Mincho', serif;
  font-size: 22px;
  margin: 0 0 24px;
  text-align: center;
  font-weight: 500;
}

.ts-sus-diagram-side.healthy h3 { color: var(--ts-kelp-mid); }
.ts-sus-diagram-side.broken h3 { color: var(--ts-coral); }

.ts-sus-flow-step {
  background: var(--ts-cream);
  border-radius: 4px;
  padding: 16px 20px;
  margin-bottom: 12px;
  border-left: 3px solid;
}

.ts-sus-diagram-side.healthy .ts-sus-flow-step { border-color: var(--ts-kelp-mid); }
.ts-sus-diagram-side.broken .ts-sus-flow-step { border-color: var(--ts-coral); }

.ts-sus-flow-step-label {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ts-ink-muted);
  margin-bottom: 4px;
}

.ts-sus-flow-step-name {
  font-family: 'Shippori Mincho', serif;
  font-size: 18px;
  font-weight: 500;
  color: var(--ts-kelp-deep);
  margin-bottom: 4px;
}

.ts-sus-flow-step-desc {
  font-size: 13px;
  color: var(--ts-ink-soft);
  line-height: 1.6;
}

.ts-sus-flow-arrow {
  text-align: center;
  font-size: 18px;
  margin: 4px 0;
  opacity: 0.4;
}

.ts-sus-diagram-side.healthy .ts-sus-flow-arrow { color: var(--ts-kelp-mid); }
.ts-sus-diagram-side.broken .ts-sus-flow-arrow { color: var(--ts-coral); }

.ts-sus-diagram-conclusion {
  background: var(--ts-kelp-deep);
  color: var(--ts-cream);
  padding: 32px 40px;
  border-radius: 4px;
  text-align: center;
}

.ts-sus-diagram-conclusion-label {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 13px;
  color: var(--ts-teal-bright);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.ts-sus-diagram-conclusion-text {
  font-family: 'Shippori Mincho', serif;
  font-size: 20px;
  line-height: 1.7;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.ts-sus-diagram-note {
  margin-top: 40px;
  padding: 24px;
  background: rgba(232, 122, 93, 0.08);
  border-left: 3px solid var(--ts-coral);
  border-radius: 4px;
}

.ts-sus-diagram-note p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--ts-ink-soft);
  margin: 0;
}

.ts-sus-diagram-note strong {
  color: var(--ts-coral);
  font-weight: 500;
}

/* ============================================
   Section 04: Our Actions
   ============================================ */

.ts-sus-actions {
  background: var(--ts-kelp-deep);
  color: var(--ts-cream);
  position: relative;
  overflow: hidden;
}

.ts-sus-actions::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 20% 30%, rgba(74, 179, 160, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(168, 216, 204, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.ts-sus-actions .ts-sus-section-number {
  color: var(--ts-teal-bright);
}

.ts-sus-actions .ts-sus-section-title {
  color: var(--ts-cream);
}

.ts-sus-actions .ts-sus-section-title em {
  color: var(--ts-teal-pale);
}

.ts-sus-action-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  position: relative;
  z-index: 2;
}

.ts-sus-action-card {
  background: rgba(251, 247, 238, 0.05);
  border: 1px solid rgba(168, 216, 204, 0.2);
  border-radius: 4px;
  padding: 48px 40px;
  position: relative;
  transition: all 0.4s ease;
}

.ts-sus-action-card:hover {
  background: rgba(251, 247, 238, 0.08);
  border-color: rgba(168, 216, 204, 0.4);
  transform: translateY(-4px);
}

.ts-sus-action-card-num {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 64px;
  color: var(--ts-teal-bright);
  line-height: 1;
  opacity: 0.3;
  position: absolute;
  top: 32px;
  right: 32px;
}

.ts-sus-action-card-label {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 13px;
  color: var(--ts-teal-bright);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.ts-sus-action-card-title {
  font-family: 'Shippori Mincho', serif;
  font-size: 26px;
  color: var(--ts-cream);
  margin: 0 0 20px;
  font-weight: 500;
}

.ts-sus-action-card-text {
  font-size: 15px;
  line-height: 2;
  color: rgba(251, 247, 238, 0.8);
  margin: 0 0 24px;
}

.ts-sus-action-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ts-teal-bright);
  font-size: 13px;
  letter-spacing: 0.15em;
  text-decoration: none;
  border-bottom: 1px solid var(--ts-teal-bright);
  padding-bottom: 4px;
  transition: all 0.3s;
}

.ts-sus-action-card-link:hover {
  color: var(--ts-cream);
  border-color: var(--ts-cream);
}

.ts-sus-action-card-link::after {
  content: '→';
  transition: transform 0.3s;
}

.ts-sus-action-card-link:hover::after {
  transform: translateX(4px);
}

.ts-sus-coming-soon {
  cursor: default;
  border-color: rgba(168, 216, 204, 0.4);
}

.ts-sus-coming-soon:hover {
  color: var(--ts-teal-bright);
  border-color: rgba(168, 216, 204, 0.4);
}

.ts-sus-coming-soon:hover::after {
  transform: none;
}

/* ============================================
   Section 05: Join
   ============================================ */

.ts-sus-join {
  background: var(--ts-cream);
  text-align: center;
}

.ts-sus-join-container {
  max-width: 720px;
}

.ts-sus-join .ts-sus-section-title {
  margin-bottom: 24px;
}

.ts-sus-join-lead {
  font-size: 17px;
  line-height: 2.1;
  color: var(--ts-ink-soft);
  margin: 0 0 56px;
}

.ts-sus-join-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 56px;
}
.ts-sus-join-actions-single {
  grid-template-columns: 1fr;
  max-width: 380px;
  margin-left: auto;
  margin-right: auto;
}

.ts-sus-join-btn {
  display: block;
  padding: 32px;
  background: var(--ts-cream);
  border: 1px solid var(--ts-kelp-mid);
  border-radius: 4px;
  text-decoration: none;
  color: var(--ts-kelp-deep);
  transition: all 0.3s;
}

.ts-sus-join-btn:hover {
  background: var(--ts-kelp-deep);
  color: var(--ts-cream);
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -16px rgba(10, 38, 32, 0.4);
}

.ts-sus-join-btn-label {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ts-coral);
  margin-bottom: 12px;
}

.ts-sus-join-btn-title {
  font-family: 'Shippori Mincho', serif;
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 4px;
}

.ts-sus-join-btn-sub {
  font-size: 13px;
  opacity: 0.8;
}

.ts-sus-contact-block {
  padding-top: 56px;
  border-top: 1px solid rgba(10, 38, 32, 0.15);
  font-size: 14px;
  line-height: 2.1;
  color: var(--ts-ink-muted);
}

.ts-sus-contact-block strong {
  font-family: 'Shippori Mincho', serif;
  font-size: 18px;
  color: var(--ts-kelp-deep);
  font-weight: 500;
  display: block;
  margin-bottom: 16px;
}

/* ============================================
   Section 06: Related Links
   ============================================ */

.ts-sus-related {
  background: var(--ts-sand-warm);
  padding: 80px 40px;
}

.ts-sus-related-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 60px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

.ts-sus-related-label {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 14px;
  color: var(--ts-ink-muted);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.ts-sus-related-items {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.ts-sus-related-items a {
  color: var(--ts-kelp-deep);
  text-decoration: none;
  font-size: 15px;
  border-bottom: 1px solid var(--ts-kelp-mid);
  padding-bottom: 4px;
  transition: color 0.3s;
}

.ts-sus-related-items a:hover {
  color: var(--ts-coral);
  border-color: var(--ts-coral);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 900px) {
  .ts-sus-philosophy-grid,
  .ts-sus-diagram-compare,
  .ts-sus-action-cards,
  .ts-sus-join-actions,
  .ts-sus-related-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .sustainability-page section {
    padding: 80px 24px;
  }

  .ts-sus-hero {
    padding: 0 24px;
  }

  .ts-sus-mission-quote {
    padding: 48px 32px;
  }

  .ts-sus-diagram-container {
    padding: 40px 24px;
  }

  .ts-sus-action-card {
    padding: 40px 28px;
  }
}