/* GEOLiNK · page styles · /design-guides/form-factor-selection/
   Scope: every selector is page-prefixed (ffs-). No global class names. */

/* 1 · Hero — data-led, six dimensions lead */
.ffs-hero {
  border-bottom: 1px solid var(--line-strong);
  background:
    radial-gradient(820px 460px at 12% 18%, rgba(var(--color-cyan-rgb), 0.12), transparent 66%),
    linear-gradient(180deg, var(--color-lab-raised) 0%, var(--color-ice-deep) 100%);
}

.ffs-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(28px, 4.5vw, 64px);
  align-items: center;
  padding-block: clamp(46px, 6vw, 84px);
}

.ffs-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-4);
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: var(--text-eyebrow);
  letter-spacing: var(--tracking-label);
  line-height: 1.4;
  text-transform: uppercase;
}

.ffs-eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.65;
}

.ffs-hero-title {
  max-width: 15ch;
  font-size: clamp(38px, 5vw, 64px);
}

.ffs-hero-lead {
  max-width: 50ch;
  margin-top: var(--space-5);
  color: var(--text-secondary);
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.62;
}

.ffs-hero-data {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  align-items: baseline;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--line-strong);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.4vw, 17px);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.ffs-hero-data span {
  position: relative;
  padding-left: var(--space-4);
}

.ffs-hero-data span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.ffs-hero-data em {
  color: var(--text-secondary);
  font-size: 10px;
  font-style: normal;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.ffs-hero-actions {
  margin-top: var(--space-6);
}

.ffs-hero-figure {
  margin: 0;
}

.ffs-hero-frame {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--color-white);
  box-shadow: var(--shadow-lift);
}

.ffs-hero-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.ffs-hero-figure figcaption {
  margin-top: var(--space-2);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
}

/* 2 · Section heads */
.ffs-section-head {
  max-width: 64ch;
  margin-bottom: var(--space-7);
}

.ffs-section-head h2 {
  max-width: 24ch;
}

/* 3 · True-scale outlines */
.ffs-scale-figure {
  margin: 0;
  padding: clamp(14px, 2.4vw, 28px);
  overflow-x: auto;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(var(--color-lab-raised-rgb), 1), rgba(var(--color-ice-deep-rgb), 0.65)),
    var(--color-lab-white);
}

.ffs-scale-figure svg {
  display: block;
  width: 100%;
  min-width: 760px;
  height: auto;
}

.ffs-scale-note {
  margin-top: var(--space-4);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  line-height: 1.6;
}

/* 4 · Enclosure fit */
.ffs-fit-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  gap: clamp(28px, 4.5vw, 64px);
  align-items: center;
}

.ffs-fit-copy p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.65;
}

.ffs-fit-list {
  margin-top: var(--space-5);
  list-style: none;
  border-top: 1px solid var(--line-strong);
}

.ffs-fit-list li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: var(--text-sm);
}

.ffs-fit-list li span:first-child {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ffs-fit-list li span:last-child {
  color: var(--text-secondary);
  text-align: right;
}

.ffs-fit-note {
  margin-top: var(--space-5);
  padding: var(--space-3) 0 var(--space-3) var(--space-4);
  border-left: 2px solid var(--accent);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  line-height: 1.6;
}

.ffs-fit-figure {
  margin: 0;
}

.ffs-fit-frame {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--color-white);
  box-shadow: var(--shadow-lift);
}

.ffs-fit-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.ffs-fit-figure figcaption {
  margin-top: var(--space-2);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1.5;
}

/* 5 · Comparison table */
.ffs-compare-lead {
  margin-top: var(--space-4);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.65;
}

.ffs-compare-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--color-lab-raised);
}

.ffs-compare-table {
  width: 100%;
  min-width: 860px;
  border-collapse: collapse;
  font-size: var(--text-sm);
  line-height: 1.45;
}

.ffs-compare-table caption {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--line);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-align: left;
}

.ffs-compare-table th,
.ffs-compare-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
  vertical-align: top;
}

.ffs-compare-table thead th {
  background: var(--color-ice);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: var(--weight-medium);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ffs-compare-table tbody th {
  color: var(--ink);
  font-weight: var(--weight-medium);
}

.ffs-compare-table tbody td {
  color: var(--text-secondary);
}

.ffs-compare-table tbody tr:last-child th,
.ffs-compare-table tbody tr:last-child td {
  border-bottom: 0;
}

/* 6 · Selection flow */
.ffs-flow-figure {
  margin: 0;
  padding: clamp(16px, 2.4vw, 28px);
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--color-lab-raised);
}

.ffs-flow-figure svg {
  display: block;
  width: 100%;
  min-width: 720px;
  height: auto;
}

.ffs-flow-note {
  margin-top: var(--space-4);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  line-height: 1.6;
}

/* 7 · Model shortlist */
.ffs-model-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: var(--space-3);
}

.ffs-model {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-3);
  border: 1px solid var(--line);
  background: var(--color-lab-raised);
  text-decoration: none;
  transition: border-color var(--dur-fast) var(--ease-standard), transform var(--dur-fast) var(--ease-standard);
}

.ffs-model:hover {
  border-color: var(--accent-strong);
  transform: translateY(-2px);
}

.ffs-model-frame {
  display: block;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--color-white);
}

.ffs-model-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.ffs-model-name {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.ffs-model-spec {
  color: var(--text-secondary);
  font-size: 10px;
  line-height: 1.45;
}

.ffs-models-note {
  margin-top: var(--space-5);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  line-height: 1.6;
}

/* 8 · Edge detail */
.ffs-detail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.ffs-shot {
  margin: 0;
}

.ffs-shot-frame {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--color-white);
}

.ffs-shot-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.ffs-shot figcaption {
  margin-top: var(--space-2);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.03em;
  line-height: 1.5;
}

/* 9 · Boundary */
.ffs-boundary-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 4.5vw, 64px);
  align-items: center;
}

.ffs-boundary-copy p {
  margin-top: var(--space-4);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.65;
}

.ffs-boundary-list {
  list-style: none;
  border-top: 1px solid var(--line-strong);
}

.ffs-boundary-list li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: var(--text-sm);
}

.ffs-boundary-list li span:first-child {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ffs-boundary-list li span:last-child {
  color: var(--text-secondary);
  text-align: right;
}

/* 10 · FAQ */
.ffs-faq-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
}

.ffs-faq-item {
  padding-top: var(--space-4);
  border-top: 2px solid var(--accent);
}

.ffs-faq-item h3 {
  margin-bottom: var(--space-3);
}

.ffs-faq-item p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.65;
}

/* 11 · CTA */
.ffs-cta {
  border-top: 1px solid var(--line-strong);
  background: linear-gradient(180deg, var(--color-ice-deep), var(--color-lab-raised));
}

.ffs-cta-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(28px, 4.5vw, 64px);
  align-items: center;
}

.ffs-cta-copy p {
  margin-top: var(--space-4);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.65;
}

.ffs-cta-actions {
  margin-top: var(--space-5);
}

.ffs-cta-figure {
  margin: 0;
}

.ffs-cta-frame {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lift);
}

.ffs-cta-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ffs-cta-figure figcaption {
  margin-top: var(--space-2);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1.5;
}

/* 12 · Responsive */
@media (max-width: 1080px) {
  .ffs-model-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 880px) {
  .ffs-hero-grid,
  .ffs-fit-grid,
  .ffs-boundary-grid,
  .ffs-cta-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

@media (max-width: 620px) {
  .ffs-model-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ffs-hero-data {
    gap: var(--space-2) var(--space-4);
  }
}