/* ── Service Detail Page Styles ── */

.sd-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 60px) var(--pad) 120px;
}

.sd-back {
  margin-bottom: 48px;
}
.sd-back a {
  font: 400 11px/1 var(--sans);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--fg-2);
  text-decoration: none;
  transition: color .3s;
}
.sd-back a:hover { color: var(--fg); }

/* Hero */
.sd-hero {
  margin-bottom: 100px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--border);
}
.sd-num {
  font: 400 11px/1 var(--sans);
  letter-spacing: .14em;
  color: var(--fg-2);
  margin-bottom: 20px;
}
.sd-title {
  font-family: var(--serif);
  font-size: clamp(42px, 7vw, 90px);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: .04em;
  color: var(--fg);
  margin-bottom: 24px;
}
.sd-headline {
  font-family: var(--serif);
  font-size: clamp(18px, 2.5vw, 28px);
  font-weight: 400;
  color: var(--fg);
  margin-bottom: 16px;
  letter-spacing: .04em;
}
.sd-sub {
  font: 400 14px/2 var(--sans);
  color: var(--fg-2);
  max-width: 600px;
  letter-spacing: .04em;
}

/* Section */
.sd-section {
  margin-bottom: 100px;
}

.sd-h2 {
  font-family: var(--serif);
  font-size: clamp(22px, 3vw, 36px);
  font-weight: 300;
  line-height: 1.4;
  color: var(--fg);
  margin-bottom: 28px;
  letter-spacing: .03em;
}
.sd-h2.sd-center { text-align: center; }

.sd-body {
  font: 400 14px/2.2 var(--sans);
  color: var(--fg-2);
  letter-spacing: .04em;
  margin-bottom: 16px;
}

.sd-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
@media (max-width: 768px) {
  .sd-grid-2 { grid-template-columns: 1fr; gap: 40px; }
}

/* Service List */
.sd-list {
  list-style: none;
  padding: 0; margin: 0;
}
.sd-list li {
  font: 400 13px/1 var(--sans);
  letter-spacing: .06em;
  color: var(--fg-2);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.sd-list li::before {
  content: '—';
  color: var(--fg-2);
  margin-right: 12px;
  flex-shrink: 0;
}
.sd-list li span:last-child {
  color: var(--fg-2);
  white-space: nowrap;
  font-weight: 400;
}

/* Pricing */
.sd-label {
  font: 400 10px/1 var(--sans);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin-bottom: 12px;
}
.sd-price {
  font-family: var(--serif);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 300;
  color: var(--fg);
  margin-bottom: 24px;
  letter-spacing: .02em;
}
.sd-incl {
  list-style: none;
  padding: 0; margin: 0 0 16px;
}
.sd-incl li {
  font: 400 13px/2 var(--sans);
  color: var(--fg-2);
  letter-spacing: .04em;
}
.sd-incl li::before {
  content: '✓ ';
  color: var(--fg-2);
}
.sd-note {
  font: 400 12px/1.8 var(--sans);
  color: var(--fg-2);
  letter-spacing: .04em;
}

/* Workflow */
.sd-workflow {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
  margin-top: 48px;
}
.sd-step {
  text-align: center;
  flex: 1 1 120px;
}
.sd-step-num {
  font-family: var(--serif);
  font-size: 48px;
  font-weight: 300;
  color: var(--fg);
  line-height: 1;
  margin-bottom: 12px;
}
.sd-step-label {
  font: 400 12px/1.5 var(--sans);
  letter-spacing: .08em;
  color: var(--fg-2);
}

/* FAQ */
.sd-faq { max-width: 760px; margin-left: auto; margin-right: auto; }
.sd-qa { margin-bottom: 32px; }
.sd-q {
  font: 400 14px/1.6 var(--sans);
  letter-spacing: .04em;
  color: var(--fg);
  margin-bottom: 10px;
}
.sd-a {
  font: 400 13px/2 var(--sans);
  letter-spacing: .04em;
  color: var(--fg-2);
  border-left: 1px solid var(--border);
  padding-left: 16px;
}

/* Comparison Cards */
.sd-compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}
@media (max-width: 640px) {
  .sd-compare-grid { grid-template-columns: 1fr; }
}
.sd-compare-card {
  border-radius: 8px;
  padding: 40px 36px 32px;
}
.sd-compare-card--other {
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
}
.sd-compare-card--khz {
  background: rgba(255,255,255,.02);
  border: 1px solid var(--fg-3);
}
.sd-compare-card__title {
  font-family: var(--serif);
  font-size: clamp(16px, 1.8vw, 22px);
  font-weight: 400;
  color: var(--fg);
  text-align: center;
  line-height: 1.5;
  margin-bottom: 36px;
  letter-spacing: .04em;
}
.sd-compare-card--khz .sd-compare-card__title {
  color: var(--fg);
  letter-spacing: .1em;
}
.sd-compare-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--border);
}
.sd-compare-row__label {
  font: 400 12px/1 var(--sans);
  letter-spacing: .06em;
  color: var(--fg);
  flex-shrink: 0;
  min-width: 80px;
}
.sd-compare-row__val {
  font: 400 13px/1.6 var(--sans);
  letter-spacing: .03em;
  color: var(--fg);
  text-align: right;
}
.sd-compare-card--khz .sd-compare-row__val { color: var(--fg); }
.sd-compare-card__price {
  font-family: var(--serif);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 400;
  letter-spacing: .04em;
}
.sd-compare-card--other .sd-compare-card__price { color: var(--fg); }
.sd-compare-card--khz .sd-compare-card__price { color: var(--fg); }

/* CTA */
.sd-cta {
  text-align: center;
  padding: 80px 0;
  border-top: 1px solid var(--border);
}
.sd-cta-btn {
  display: inline-block;
  padding: 18px 64px;
  border: 1px solid var(--fg-2);
  color: var(--fg);
  font: 400 13px/1 var(--sans);
  letter-spacing: .24em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background .3s, color .3s, border-color .3s;
}
.sd-cta-btn:hover {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}