/* ==========================================================================
   Backlink Agency for SaaS — landing page styles.
   Page-specific layout only. Requires site-chrome.css (tokens, nav, footer,
   buttons, tags, dialog, base elements) to be enqueued first.
   ========================================================================== */

/* — reviews band (shared reviews partial, this page's own spacing rhythm) — */
.reviews-band { padding: calc(3 * var(--leading)) 0; }

/* — hero — */
.hero { padding: calc(4 * var(--leading)) 0 calc(3 * var(--leading)); }
body.aeo-blank-canvas .display {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: clamp(32px, 3.6vw, 52px);
  line-height: clamp(37px, 4.1vw, 58px);
  letter-spacing: -0.015em; margin: 0;
  margin-left: -0.06em;
}
.display .line { display: block; }
.hero .sub {
  font-size: 17px; line-height: var(--leading); max-width: var(--measure);
  margin: calc(1.5 * var(--leading) - 1cap) 0 0; color: var(--color-text);
}
.hero .row { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--leading); }
.hero-top {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: clamp(24px, 4vw, 56px); margin-top: calc(1.5 * var(--leading) - 1cap);
}
.hero-top .sub { margin-top: 0; flex: 1 1 auto; }
.hero-cta { display: flex; flex-direction: column; gap: var(--space-3); flex: none; min-width: 200px; }
.hero-cta .btn { width: 100%; justify-content: center; font-size: 17px; min-height: 52px; }
.hero-cta .btn-ghost { border: 1px solid var(--color-accent); }

/* — impact button: solid fill, used for the page's strongest CTAs — */
.btn-impact {
  background: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
  font-weight: 600;
  font-size: 18px;
  padding: 16px 32px;
  min-height: 56px;
}
.btn-impact:hover { background: var(--color-accent-2); border-color: var(--color-accent-2); }
.btn-impact:active { background: var(--color-accent-2); }
@media (max-width: 720px) { .hero-top { flex-direction: column; } .hero-cta { width: 100%; } }

/* — channel band — */
.channels .grid { display: flex; flex-wrap: wrap; gap: calc(1.5 * var(--leading)) calc(2 * var(--leading)); align-items: baseline; }
.channels .lead {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 20px; line-height: var(--leading); color: var(--color-text); margin: 0 0 var(--leading) 0; max-width: 40ch;
}
.channels .engine { font-size: 15px; line-height: var(--half); letter-spacing: 0.01em; color: color-mix(in srgb, var(--color-text) 70%, transparent); font-feature-settings: "tnum" 1; }
.channels .engine strong { color: var(--color-text); font-weight: 500; }
.channels {
  background:
    radial-gradient(900px 420px at 85% -40%,
      color-mix(in srgb, var(--color-section-glow) 70%, transparent), transparent 64%),
    var(--color-section);
  padding: calc(2.5 * var(--leading)) 0;
}

/* — feature / step rows — */
.features { padding: calc(3.5 * var(--leading)) 0 calc(2.5 * var(--leading)); }
.feature, .step {
  display: grid; grid-template-columns: minmax(64px, 160px) minmax(0, 420px) minmax(0, 1fr);
  gap: var(--leading) clamp(24px, 4vw, 72px); align-items: baseline;
  padding: calc(1.5 * var(--leading)) 0; position: relative;
}
.feature + .feature::before, .step + .step::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(to right, transparent, var(--color-neutral-700) 48px calc(100% - 48px), transparent);
}
.f-num {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 15px; line-height: var(--leading); color: var(--color-accent);
  font-feature-settings: "tnum" 1;
}
body.aeo-blank-canvas .f-num { margin: 0; }
body.aeo-blank-canvas .f-title {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 24px; line-height: var(--leading); letter-spacing: -0.01em; margin: 0;
}
.f-copy {
  font-size: 15.5px; line-height: var(--leading);
  color: color-mix(in srgb, var(--color-text) 78%, transparent); max-width: 52ch;
}
body.aeo-blank-canvas .f-copy { margin: 0; }
.steps { padding: calc(3.5 * var(--leading)) 0 calc(2.5 * var(--leading)); }

@media (max-width: 880px) {
  .feature, .step { grid-template-columns: 1fr; gap: var(--half); }
  .f-copy { max-width: var(--measure); }
}

/* — imagery split — */
.split {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--leading) clamp(24px, 5vw, 96px); align-items: center;
  padding: calc(2 * var(--leading)) 0 calc(3 * var(--leading));
}
.split-copy .note {
  font-size: 15.5px; line-height: var(--leading);
  color: color-mix(in srgb, var(--color-text) 78%, transparent);
  margin: calc(var(--leading) - 1cap) 0 0; max-width: 48ch;
}
body.aeo-blank-canvas .split-title {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 32px; line-height: calc(1.5 * var(--leading)); letter-spacing: -0.012em; margin: 0;
}
.split-figure { margin: 0; border-radius: var(--radius-lg); overflow: hidden; }
.split-figure img { width: 100%; aspect-ratio: 1600 / 1261; object-fit: cover; }

@media (max-width: 720px) {
  .split { grid-template-columns: 1fr; }
  .split-figure { order: -1; }
}

/* — why band — */
.why-band { background: var(--color-surface); padding: calc(3 * var(--leading)) 0 calc(2.5 * var(--leading)); }
.benefit-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--leading) clamp(24px, 4vw, 64px); margin-top: calc(1.5 * var(--leading)); }
.benefit { display: flex; flex-direction: column; gap: var(--half); }
.benefit-num { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 15px; color: var(--color-accent-300); font-feature-settings: "tnum" 1; margin: 0; }
body.aeo-blank-canvas .benefit h3 { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 19px; line-height: var(--leading); margin: 0; }
body.aeo-blank-canvas .benefit p { font-size: 15px; line-height: var(--leading); margin: 0; max-width: 46ch; color: color-mix(in srgb, var(--color-text) 78%, transparent); }
@media (max-width: 720px) { .benefit-grid { grid-template-columns: 1fr; } }

/* — comparison — */
.compare { padding: calc(3 * var(--leading)) 0 calc(2.5 * var(--leading)); }
.compare > .row { display: flex; justify-content: center; margin-top: calc(2 * var(--leading)); }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 4vw, 56px); margin-top: calc(1.5 * var(--leading)); align-items: start; }
.compare-col { display: flex; flex-direction: column; gap: var(--space-3); }
body.aeo-blank-canvas .compare-col h3 { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 17px; line-height: var(--leading); margin: 0; }
.compare-col.is-them h3 { color: color-mix(in srgb, var(--color-text) 60%, transparent); }
.compare-col.is-us {
  background: color-mix(in srgb, var(--color-accent-900) 55%, transparent);
  border: 1px solid var(--color-accent-700); border-radius: var(--radius-md); padding: var(--space-4);
}
.compare-col.is-us h3 { color: var(--color-accent-100); }
.compare-item { display: flex; gap: var(--space-2); font-size: 15px; line-height: var(--leading); color: color-mix(in srgb, var(--color-text) 82%, transparent); }
.compare-col.is-them .compare-item::before { content: "\2013"; color: color-mix(in srgb, var(--color-text) 45%, transparent); flex: none; }
.compare-col.is-us .compare-item::before { content: "\2713"; color: var(--color-accent); flex: none; }
@media (max-width: 720px) {
  .compare-grid { grid-template-columns: 1fr; }
  .compare .row .btn-impact { width: 100%; justify-content: center; }
}

/* — article guides — */
.guides { padding: 0 0 calc(2.5 * var(--leading)); }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 3vw, 32px); margin-top: calc(1.5 * var(--leading)); }
.guide-card {
  display: flex; flex-direction: column; gap: var(--half); padding: var(--space-4);
  border: 1px solid var(--color-divider); border-radius: var(--radius-md); text-decoration: none;
}
.guide-card:hover { border-color: var(--color-accent-700); background: color-mix(in srgb, var(--color-accent-900) 25%, transparent); }
.guide-card .tag { align-self: flex-start; }
body.aeo-blank-canvas .guide-card h3 {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 17px; line-height: calc(1.25 * var(--leading)); margin: 0; color: var(--color-text);
}
.guide-card span.read { font-size: 13px; color: var(--color-accent-300); }
@media (max-width: 880px) { .guide-grid { grid-template-columns: 1fr; } }

/* — FAQ accordion — native details/summary — */
.faq { padding: calc(3.5 * var(--leading)) 0 calc(2.5 * var(--leading)); }
.faq-item { border: 0; position: relative; padding: calc(1.25 * var(--leading)) 0; }
.faq-item + .faq-item::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(to right, transparent, var(--color-neutral-700) 48px calc(100% - 48px), transparent);
}
.faq-item summary {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 18px; line-height: var(--leading); cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: baseline; gap: var(--space-3);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--color-accent); font-size: 20px; flex: none; }
.faq-item[open] summary::after { content: "\2013"; }
.faq-item summary:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 4px; }
body.aeo-blank-canvas .faq-item p { font-size: 15.5px; line-height: var(--leading); margin: var(--half) 0 0; color: color-mix(in srgb, var(--color-text) 78%, transparent); max-width: 62ch; }

/* — close / signup — */
.close { padding: calc(2.5 * var(--leading)) 0 calc(2 * var(--leading)); }
body.aeo-blank-canvas .close h3 { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 24px; line-height: var(--leading); margin: 0; }
.close .sub { font-size: 15.5px; line-height: var(--leading); color: color-mix(in srgb, var(--color-text) 78%, transparent); margin: calc(var(--leading) - 1cap) 0 0; max-width: var(--measure); }
.close-split { display: flex; justify-content: space-between; align-items: center; gap: clamp(24px, 4vw, 56px); }
.close-split .close-text { flex: 1; }
.close-split .btn { flex: none; font-size: 18px; padding: var(--space-3) var(--space-6); min-width: 260px; min-height: 52px; }
@media (max-width: 720px) { .close-split { flex-direction: column; align-items: flex-start; } .close-split .btn { width: 100%; } }

/* — responsive collapse — */
@media (max-width: 720px) {
  .hero { padding-top: calc(2.5 * var(--leading)); padding-bottom: calc(2 * var(--leading)); }
  .hero-cta .btn { width: 100%; }
}
@media (max-width: 600px) {
  body.aeo-blank-canvas .display { font-size: 30px; line-height: 1.2; margin-left: 0; }
}