:root {
  --color-bg: #f5f7f7;
  --color-surface: #ffffff;
  --color-ink: #0c121a;
  --color-muted: rgba(12, 18, 26, 0.64);
  --color-subtle: rgba(12, 18, 26, 0.48);
  --color-line: rgba(12, 18, 26, 0.12);
  --color-accent: #2f8276;
  --color-accent-soft: rgba(47, 130, 118, 0.08);
  --color-soil: #c9a574;
  --color-hero-bg: #eef3f4;
  --max-width: 960px;
  --radius-large: 32px;
  --radius-medium: 18px;
  --radius-small: 10px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Newsreader', 'Georgia', serif;
  --shadow-soft: 0 24px 48px -32px rgba(12, 18, 26, 0.35);
  --shadow-faint: 0 8px 20px -16px rgba(12, 18, 26, 0.35);
}

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

a:hover, a:focus {
  color: var(--color-accent);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.site-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 3rem);
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(16px);
  background: rgba(245, 247, 247, 0.92);
  border-bottom: 1px solid var(--color-line);
  z-index: 10;
}

.site-header .site-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.01em;
  color: var(--color-ink);
  text-decoration: none;
}

.mark-logo {
  width: 36px;
  height: auto;
  display: block;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2.5rem);
  flex: 1;
  justify-content: flex-end;
}

.header-line {
  font-size: 0.9rem;
  color: var(--color-muted);
}

.language-switch select {
  appearance: none;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: 0.4rem 1.8rem 0.4rem 0.8rem;
  border-radius: var(--radius-small);
  border: 1px solid var(--color-line);
  background: var(--color-surface) url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 20 20" fill="none"%3E%3Cpath d="M5 7l5 6 5-6" stroke="%230C121A" stroke-width="1.4" stroke-linecap="round" stroke-linejoin="round"/%3E%3C/svg%3E') no-repeat right 0.6rem center;
}

main {
  display: flex;
  flex-direction: column;
  gap: clamp(3rem, 6vw, 6rem);
  padding-bottom: clamp(4rem, 10vw, 8rem);
}

.hero {
  background: var(--color-hero-bg);
  border-bottom: 1px solid var(--color-line);
  padding-block: clamp(3.5rem, 8vw, 6rem);
}

.hero-pill {
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-soil);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.3rem, 5vw, 3.8rem);
  line-height: 1.15;
  margin: 1rem 0;
}

.hero-lede {
  max-width: 46rem;
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  color: var(--color-subtle);
  margin-bottom: clamp(1.8rem, 4vw, 2.4rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.hero-footnote {
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
  font-size: 0.95rem;
  color: var(--color-soil);
}

.section-tag {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-soil);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  line-height: 1.2;
  margin: 0 0 1.2rem;
}

.section-body {
  max-width: 40rem;
  color: var(--color-subtle);
  margin-bottom: 1.8rem;
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.btn.primary {
  background: var(--color-accent);
  color: #f4fdfc;
  box-shadow: var(--shadow-faint);
}

.btn.primary:hover, .btn.primary:focus {
  background: #276d64;
}

.btn.link {
  background: transparent;
  color: var(--color-accent);
  border-color: transparent;
  text-decoration: none;
  padding-inline: 0;
}

.btn.link:hover, .btn.link:focus {
  color: #1f5b52;
}

.btn.surface {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.btn.surface:hover, .btn.surface:focus {
  background: rgba(47, 130, 118, 0.16);
}

.btn.muted {
  background: transparent;
  border-color: var(--color-line);
  color: var(--color-muted);
}

.btn.full {
  width: 100%;
}

.chain {
  background: var(--color-bg);
}

.chain-grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
}

.chain-step {
  padding: 1.6rem;
  background: var(--color-surface);
  border-radius: var(--radius-medium);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-faint);
}

.chain-step h3 {
  font-family: var(--font-serif);
  margin: 0 0 0.6rem;
  font-size: 1.3rem;
}

.chain-step p {
  margin: 0;
  color: var(--color-subtle);
}

.pledge {
  background: var(--color-surface);
  border-top: 1px solid rgba(12, 18, 26, 0.08);
  border-bottom: 1px solid rgba(12, 18, 26, 0.08);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.4);
}

.pledge-shell {
  display: grid;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
}

.pledge-copy .pledge-points {
  padding-left: 1rem;
  margin: 1.5rem 0 0;
  color: var(--color-subtle);
  line-height: 1.5;
}

.pledge-form-wrap {
  background: #ffffff;
  border-radius: var(--radius-large);
  border: 1px solid var(--color-line);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  box-shadow: var(--shadow-soft);
  position: relative;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1.2rem;
}

.field label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-muted);
}

.field-inline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.field-tight {
  gap: 0.8rem;
}

.field-note {
  margin-top: 0.35rem;
  font-size: 0.75rem;
  color: var(--color-muted);
}

.field-note.error {
  color: #b93d3d;
}

input, textarea, select {
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-small);
  border: 1px solid rgba(12, 18, 26, 0.16);
  background: rgba(255, 255, 255, 0.88);
  color: var(--color-ink);
}

input:focus, textarea:focus, select:focus {
  outline: 2px solid rgba(47, 130, 118, 0.35);
  border-color: rgba(47, 130, 118, 0.45);
}

input[readonly] {
  background: rgba(12, 18, 26, 0.06);
  color: var(--color-subtle);
  cursor: not-allowed;
}

input[readonly]:focus {
  outline: none;
  border-color: rgba(12, 18, 26, 0.16);
}

.is-readonly {
  background: rgba(12, 18, 26, 0.06) !important;
  color: var(--color-subtle) !important;
  cursor: not-allowed !important;
}

textarea {
  min-height: 160px;
  resize: vertical;
}

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  margin-bottom: 1.4rem;
  color: var(--color-subtle);
}

.coord-input {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.6rem;
  align-items: center;
}

.coord-input input {
  width: 100%;
}

.coord-input .btn {
  white-space: nowrap;
  padding-inline: 1.1rem;
  height: 100%;
}

.checkbox input {
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.2rem;
}

.privacy-line {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-top: 0.8rem;
}

.hidden {
  display: none !important;
}

.pledge-thanks {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.share-line {
  display: grid;
  gap: 0.4rem;
}

.share-line input {
  font-size: 0.9rem;
  background: rgba(12, 18, 26, 0.05);
  border: 1px dashed rgba(12, 18, 26, 0.2);
}

.code-editor {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.code-editor input {
  flex: 1;
}

.share-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.thanks-stats {
  display: grid;
  gap: 0.6rem;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  margin: 0;
}

.thanks-stats dt {
  font-size: 0.8rem;
  color: var(--color-muted);
}

.thanks-stats dd {
  margin: 0.15rem 0 0;
  font-size: 1.2rem;
  font-weight: 600;
}

.movement {
  background: var(--color-bg);
}

.movement-wrap {
  display: grid;
  gap: clamp(2rem, 5vw, 3rem);
  align-items: start;
}

.movement-stats {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.stat {
  border-left: 2px solid var(--color-accent);
  padding-left: 1rem;
}

.stat span {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.stat strong {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  margin-top: 0.3rem;
  font-family: var(--font-serif);
}

.movement-visual {
  display: grid;
  gap: clamp(1.6rem, 3vw, 2.5rem);
}

.map-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-large);
  border: 1px solid rgba(12,18,26,0.12);
  background: linear-gradient(135deg, rgba(47,130,118,0.08), rgba(255,255,255,0.85));
  padding: clamp(1.5rem, 4vw, 2.8rem);
  box-shadow: var(--shadow-soft);
}

.map-header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: baseline;
  margin-bottom: 1rem;
}

.map-tag {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-accent);
}

.map-note {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.map-area {
  width: 100%;
  height: clamp(320px, 55vw, 520px);
  border-radius: var(--radius-medium);
  border: 1px solid rgba(12,18,26,0.08);
  overflow: hidden;
}

.map-card .leaflet-container {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-medium);
  filter: saturate(70%) grayscale(35%);
}

.map-card .leaflet-tile {
  opacity: 0.74;
}

.map-card .leaflet-control-attribution {
  font-size: 0.65rem;
  background: rgba(255,255,255,0.8);
  color: var(--color-muted);
}

.map-card .leaflet-control-zoom {
  border-radius: 12px;
  box-shadow: var(--shadow-faint);
}

.map-actions {
  margin-top: 0.8rem;
}

.map-card.expanded .map-area {
  height: clamp(420px, 70vh, 640px);
}

.map-card.expanded {
  position: relative;
  z-index: 3;
  grid-column: 1 / -1;
}

.map-footnote {
  margin-top: 0.8rem;
  font-size: 0.75rem;
  color: var(--color-muted);
}

.artifact {
  background: var(--color-hero-bg);
  border-radius: var(--radius-large);
  padding: clamp(1.5rem, 4vw, 2.8rem);
  border: 1px solid var(--color-line);
  position: relative;
  overflow: hidden;
}

.artifact::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.45), transparent 55%);
  pointer-events: none;
}

.artifact-card {
  position: relative;
  z-index: 1;
  padding: clamp(1.2rem, 3vw, 1.8rem);
  border-radius: var(--radius-medium);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(12, 18, 26, 0.1);
  box-shadow: var(--shadow-faint);
  display: grid;
  gap: 0.3rem;
  font-family: var(--font-serif);
}

.artifact-line {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  line-height: 1.35;
  margin: 0;
}

.artifact-meta {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0.3rem 0;
}

.artifact-tag {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-accent);
  margin: 0;
}

.artifact-actions {
  position: relative;
  z-index: 1;
  margin-top: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.artifact-preview {
  margin-top: 1.2rem;
  width: 100%;
  border-radius: var(--radius-medium);
  border: 1px solid rgba(12, 18, 26, 0.12);
  box-shadow: var(--shadow-faint);
  display: block;
}

.ideas {
  background: var(--color-surface);
  border-top: 1px solid var(--color-line);
}

.ideas-body {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
}

.idea-form {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  padding: clamp(1.4rem, 3vw, 2.2rem);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-faint);
}

.idea-stream {
  display: grid;
  gap: 1rem;
}

.idea-card {
  border: 1px solid rgba(12, 18, 26, 0.12);
  border-radius: var(--radius-medium);
  padding: 1.2rem 1.4rem;
  background: rgba(245, 247, 247, 0.6);
  box-shadow: var(--shadow-faint);
}

.idea-card strong {
  font-family: var(--font-serif);
  font-size: 1.1rem;
}

.idea-card p {
  margin: 0.4rem 0 0;
  color: var(--color-subtle);
}

.idea-meta {
  font-size: 0.8rem;
  color: var(--color-muted);
}

.trust-columns {
  display: grid;
  gap: clamp(1.4rem, 3vw, 2.4rem);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: 1.8rem;
}

.trust-columns h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin: 0 0 0.5rem;
}

.trust-columns p {
  margin: 0;
  color: var(--color-subtle);
}

.site-footer {
  border-top: 1px solid var(--color-line);
  background: rgba(245, 247, 247, 0.92);
}

.site-footer p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-muted);
  text-align: center;
}

@media (min-width: 720px) {
  .chain-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .pledge-shell {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .field-inline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .field-tight {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .movement-wrap {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .map-card .leaflet-control-zoom {
    display: block;
  }

  .ideas-body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  .site-header {
    position: static;
  }

  .header-meta {
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.75rem;
  }

  .hero-title {
    font-size: clamp(2rem, 9vw, 3.2rem);
  }

  .pledge-form-wrap {
    border-radius: 24px;
  }

  .artifact {
    border-radius: 24px;
  }

  .map-card .leaflet-control-zoom {
    display: none;
  }
}