/* ── Advantage Page ─────────────────────────────────────────────────────────── */

/* Hero — layout uses global .hero-2col, .hero-2col-left, .hero-headline, .hero-sub, .hero-card-list */

/* Italic emphasis paragraph */
.adv-body--em {
  font-style: italic;
  color: var(--fg-primary);
  font-size: 18px;
}


/* ── Problem Section ─────────────────────────────────────────────────────────── */
.adv-problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
}
.adv-concern-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-self: start;
  padding-top: 58px; /* aligns roughly with body text */
}
.adv-concern-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: var(--fs-body);
  color: var(--fg-body);
  line-height: 1.45;
  padding: 12px 0;
  border-top: 1px solid var(--border-hair);
}
.adv-concern-list li:last-child { border-bottom: 1px solid var(--border-hair); }
.adv-concern-icon { display: flex; flex-shrink: 0; color: var(--brand-plum); margin-top: 2px; }

/* ── LLM Comparison Section ──────────────────────────────────────────────────── */
.adv-compare-section { background: var(--ink-2); }

.adv-compare-intro {
  max-width: 700px;
  margin: 0 auto 52px;
  text-align: center;
}
.adv-compare-body {
  font-size: var(--fs-lead);
  color: var(--fg-secondary);
  line-height: 1.6;
  margin: 0;
}
@media (max-width: 760px) {
  .adv-compare-intro {
    text-align: left;
    margin-left: 0;
    margin-right: 0;
  }
}

/* ── Consistency Chart (cc-*) ────────────────────────────────────────────────── */
.cc-wrap {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.cc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  perspective: 2200px;
  perspective-origin: 50% 60%;
}
@media (max-width: 760px) {
  .cc-grid { grid-template-columns: 1fr; }
}

/* Panel card */
.cc-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-hair);
  border-radius: 14px;
  padding: 20px 22px 14px;
  margin: 0;
  box-shadow: 0 1px 0 rgba(23, 20, 15, 0.02);
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.cc-panel--noisy {
  transform: rotateY(6deg) rotateX(1.5deg) translateZ(-8px);
  transform-origin: right center;
  box-shadow:
    0 1px 0 rgba(23, 20, 15, 0.02),
    -10px 14px 28px rgba(23, 20, 15, 0.06);
}
.cc-panel--flat {
  transform: rotateY(-6deg) rotateX(1.5deg) translateZ(4px);
  transform-origin: left center;
  box-shadow:
    0 1px 0 rgba(23, 20, 15, 0.02),
    14px 18px 36px rgba(69, 43, 81, 0.10);
}
@media (max-width: 760px) {
  .cc-panel--noisy,
  .cc-panel--flat { transform: none; box-shadow: 0 1px 0 rgba(23, 20, 15, 0.02); }
}
.cc-panel--flat::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--brand-plum);
  opacity: 0;
  transition: opacity .3s;
}
.cc-emphasize .cc-panel--flat::before { opacity: 1; }
.cc-emphasize .cc-panel--noisy { opacity: 0.92; }

.cc-panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--border-hair);
}
.cc-panel-label {
  display: flex;
  align-items: center;
  gap: 10px;
}
.cc-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink-5);
}
.cc-dot--flat { background: var(--brand-plum); }
.cc-dot--noisy { background: transparent; box-shadow: inset 0 0 0 1.5px var(--ink-5); }
.cc-panel-name {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--ink-8);
}
.cc-panel--flat .cc-panel-name { color: var(--brand-plum); }
.cc-panel-sub {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 400;
  color: var(--fg-tertiary);
  letter-spacing: 0.01em;
}

/* SVG chart */
.cc-svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}
.cc-plot-bg { fill: transparent; }
.cc-baseline { stroke: var(--ink-4); stroke-width: 1; }
.cc-ytick line, .cc-xtick line { stroke: var(--ink-4); stroke-width: 1; }
.cc-ytick text, .cc-xtick text {
  font-family: var(--font-mono);
  font-size: 10px;
  fill: var(--fg-tertiary);
  letter-spacing: 0.02em;
}
.cc-axlabel {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 500;
  fill: var(--fg-tertiary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Lines */
.cc-line {
  fill: none;
  stroke-width: 2.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  opacity: 0;
  will-change: stroke-dashoffset, opacity;
}
.cc-panel--flat .cc-line { stroke-width: 3; }
.cc-emphasize .cc-panel--noisy .cc-line { stroke-width: 2.25; opacity: 1; }
.cc-emphasize .cc-panel--flat .cc-line { stroke-width: 3.25; }

/* Points */
.cc-point {
  opacity: 0;
  stroke: var(--bg-surface);
  stroke-width: 1.25;
  paint-order: stroke fill;
  will-change: opacity, r;
}
.cc-panel--flat .cc-point { stroke-width: 1.5; }

/* Caption */
.cc-caption {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--fg-tertiary);
  text-align: center;
  letter-spacing: 0.005em;
  margin-top: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .cc-line { stroke-dashoffset: 0 !important; opacity: 1 !important; }
  .cc-point { opacity: 1 !important; r: 3.5 !important; }
}

/* ── Why Different Section ───────────────────────────────────────────────────── */
.adv-why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
}
.adv-combines-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.adv-combines-list li {
  font-size: var(--fs-body);
  color: var(--fg-body);
  padding: 8px 0 8px 16px;
  border-left: 2px solid var(--brand-gold);
}
.adv-capability-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.adv-cap-card {
  background: var(--ink-0);
  border: 1px solid var(--border-hair);
  border-radius: var(--r-lg);
  padding: 24px;
  box-shadow: var(--shadow-1);
}
.adv-cap-icon {
  color: var(--brand-plum);
  margin-bottom: 12px;
}
.adv-cap-title {
  font: 600 16px/1.3 var(--font-sans);
  color: var(--fg-primary);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.adv-cap-desc {
  font-size: 16px;
  color: var(--fg-secondary);
  line-height: 1.55;
  margin: 0;
}

/* ── Science Section ─────────────────────────────────────────────────────────── */
.adv-science-header {
  max-width: 620px;
  margin-bottom: 40px;
}
.adv-science-intro {
  margin: 0;
  max-width: 560px;
}
.adv-science-lower {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 40px;
  align-items: start;
}
.adv-science-chips-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.adv-science-chips-label {
  font: 600 12px/1 var(--font-sans);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-tertiary);
  margin: 0;
}
.adv-science-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.adv-science-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  background: var(--brand-plum-mist);
  border: 1px solid var(--brand-plum-tint);
  border-radius: var(--r-pill);
  font: 500 16px/1 var(--font-sans);
  color: var(--brand-plum-deep);
  letter-spacing: -0.005em;
}

/* Campion card */
.adv-campion-card {
  background: var(--brand-plum-mist);
  border: 1px solid var(--brand-plum-tint);
  border-radius: var(--r-xl);
  padding: 32px;
}
.adv-campion-label {
  font: 600 13px/1 var(--font-sans);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brand-plum);
  margin: 0 0 20px;
}
.adv-campion-inner {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.adv-campion-photo {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--brand-plum-tint);
}
.adv-campion-name {
  font: 600 17px/1.2 var(--font-sans);
  color: var(--fg-primary);
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}
.adv-campion-school {
  font-size: 16px;
  color: var(--brand-plum);
  font-weight: 500;
  margin: 0 0 10px;
}
.adv-campion-desc {
  font-size: 16px;
  color: var(--fg-secondary);
  line-height: 1.55;
  margin: 0;
}


/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 880px) {
  .adv-problem-grid,
  .adv-why-grid,
  .adv-science-lower {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .llm-charts-pair {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .adv-capability-cards {
    grid-template-columns: 1fr;
  }
}