/* ============================================================
   PEOPLE'S LAB — /platform/ page styling
   Commercial landing page for Sovereign AI Platform.
   Tokens only. No magic numbers. Respects prefers-reduced-motion.
   ============================================================ */

/* ══════════════════════════════════════════════════════════
   1. HERO — light gradient variant, isometric stack art
   ══════════════════════════════════════════════════════════ */
.pf-hero {
  position: relative;
  overflow: hidden;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: var(--space-20) 0 var(--space-16);
  background: var(--color-navy-900);
  color: var(--color-white);
  isolation: isolate;
}
.pf-hero__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.55;
}
.pf-hero__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(1100px 600px at 12% 28%, rgba(86, 105, 164, 0.32), transparent 70%),
    radial-gradient(900px 500px at 88% 82%, rgba(163, 176, 217, 0.18), transparent 70%),
    linear-gradient(180deg, rgba(19, 25, 44, 0.70) 0%, rgba(19, 25, 44, 1) 100%);
  pointer-events: none;
}
.pf-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-8);
}
.pf-hero__content { max-width: 640px; }
.pf-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-pill);
  font-family: var(--font-primary);
  font-size: 12px;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: var(--space-6);
}
.pf-hero__badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-periwinkle-500);
  box-shadow: 0 0 12px rgba(163, 176, 217, 0.8);
  animation: pf-pulse 2.2s infinite var(--ease-in-out);
}
.pf-hero__title {
  font-size: var(--text-h1);
  font-weight: 500;
  letter-spacing: var(--track-tight);
  line-height: var(--lh-tight);
  color: var(--color-white);
  margin: 0 0 var(--space-5);
  text-shadow: 0 2px 20px rgba(19, 25, 44, 0.35);
}
.pf-hero__title .heading-accent { color: var(--color-periwinkle-500); display: block; }
.pf-hero__subtitle {
  font-size: var(--text-h3);
  line-height: var(--lh-prose);
  color: rgba(255, 255, 255, 0.82);
  max-width: 580px;
  margin: 0 0 var(--space-8);
}
.pf-hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* Metrics band — monospace pulsing dots */
.pf-metrics {
  position: relative;
  z-index: 1;
  margin-top: var(--space-12);
  padding: var(--space-5) 0 0;
  border-top: 1px dashed rgba(255, 255, 255, 0.16);
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  font-family: var(--font-primary);
  font-size: 13px;
  letter-spacing: var(--track-wide);
  color: rgba(255, 255, 255, 0.72);
}
.pf-metrics__item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.pf-metrics__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-periwinkle-500);
  animation: pf-pulse 2.6s infinite var(--ease-in-out);
}
.pf-metrics__dot--green { background: var(--color-success); animation-delay: 0.4s; }
.pf-metrics__dot--peri  { background: var(--color-periwinkle-700); animation-delay: 0.8s; }

/* Stack visualization — flat horizontal bars */
.pf-isostack {
  position: relative;
  width: 100%;
  max-width: 480px;
  justify-self: end;
}
.pf-isostack::before {
  content: "";
  position: absolute;
  inset: -40px -30px;
  background: radial-gradient(60% 60% at 70% 50%, rgba(163, 176, 217, 0.18), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.pf-isostack__layers {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.pf-isostack__layer {
  position: relative;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.04) 100%);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 14px;
  padding: 18px 22px;
  font-family: var(--font-primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  color: var(--color-white);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 10px 30px rgba(0, 0, 0, 0.32);
  transition: transform var(--dur-normal) var(--ease-smooth), border-color var(--dur-fast) var(--ease-linear);
}
.pf-isostack__layer::after {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.28), transparent);
  pointer-events: none;
}
.pf-isostack__layer:nth-child(1) {
  background: linear-gradient(145deg, rgba(163, 176, 217, 0.42) 0%, rgba(86, 105, 164, 0.28) 100%);
  border-color: rgba(210, 217, 241, 0.55);
  color: var(--color-white);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    0 16px 40px rgba(0, 0, 0, 0.42),
    0 0 32px rgba(163, 176, 217, 0.28);
}
.pf-isostack__layer:nth-child(1) span.pf-isostack__note { color: rgba(255, 255, 255, 0.88); }
.pf-isostack__layer:nth-child(7) {
  background: linear-gradient(145deg, rgba(86, 105, 164, 0.28) 0%, rgba(86, 105, 164, 0.14) 100%);
  border-color: rgba(163, 176, 217, 0.32);
}
.pf-isostack__layer span.pf-isostack__note {
  font-family: var(--font-primary);
  font-weight: 400;
  text-transform: none;
  letter-spacing: var(--track-normal);
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  margin-left: var(--space-3);
}
.pf-isostack.is-scrolled .pf-isostack__layer:nth-child(1) { transform: translateY(-3px); }
.pf-isostack.is-scrolled .pf-isostack__layer:nth-child(4) { transform: translateY(-1px); }
.pf-isostack.is-scrolled .pf-isostack__layer:nth-child(7) { transform: translateY(3px); border-color: rgba(163, 176, 217, 0.55); }

/* Reveal — stack layers slide in from left bottom-up; Application drops from top last */
@keyframes pf-iso-fade {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes pf-iso-drop-top {
  from { opacity: 0; transform: translateY(-36px); }
  to   { opacity: 1; transform: translateY(0); }
}
.pf-isostack__layer {
  opacity: 0;
  animation: pf-iso-fade 1600ms var(--ease-out) forwards;
}
.pf-isostack__layer:nth-child(1) {
  animation: pf-iso-drop-top 1900ms var(--ease-out) 2000ms forwards;
}
@media (prefers-reduced-motion: reduce) {
  .pf-isostack__layer {
    opacity: 1;
    animation: none;
  }
}

@media (max-width: 1023px) {
  .pf-hero__inner { grid-template-columns: 1fr; gap: var(--space-10); }
  .pf-isostack { justify-self: center; }
}
@media (max-width: 768px) {
  .pf-hero { min-height: auto; padding: var(--space-12) 0 var(--space-10); }
  .pf-isostack { display: none; }
}
@media (max-width: 640px) {
  .pf-hero__actions .btn { width: 100%; justify-content: center; }
  .pf-metrics { gap: var(--space-3); font-size: 12px; }
}

/* ══════════════════════════════════════════════════════════
   Shared — section scaffolding for platform sections
   ══════════════════════════════════════════════════════════ */
.pf-section {
  padding: var(--section-py) 0;
  background: var(--color-white);
  position: relative;
}
.pf-section .container { max-width: 1400px; }
#faq .container { max-width: 1200px; }
.pf-hero__inner,
.pf-ctaband__inner { max-width: 1400px; }

.pf-hero__actions .btn,
.pf-lane__cta .btn,
.pf-tier__cta .btn,
.pf-ctaband__actions .btn { white-space: nowrap; }

.pf-partners-band {
  background: var(--color-white);
  padding: var(--space-10) 0;
  border-bottom: 1px solid var(--alpha-peri-10);
}
.pf-section--soft { background: var(--color-lavender-50); }
.pf-section--dark {
  background: linear-gradient(150deg, var(--color-navy-900) 0%, var(--color-navy-500) 100%);
  color: var(--color-white);
}
.pf-section--grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--alpha-peri-05) 1px, transparent 1px),
    linear-gradient(90deg, var(--alpha-peri-05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 75%);
}
.pf-section .container { position: relative; z-index: 1; }

.pf-section__intro {
  text-align: center;
  max-width: 780px;
  margin: 0 auto var(--space-12);
}
.pf-section__eyebrow {
  display: inline-block;
  font-family: var(--font-primary);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--track-widest);
  color: var(--color-periwinkle-900);
  margin-bottom: var(--space-4);
}
.pf-section--dark .pf-section__eyebrow { color: var(--color-periwinkle-500); }
.pf-section__heading {
  font-size: var(--text-h2);
  font-weight: 500;
  letter-spacing: var(--track-tight);
  line-height: var(--lh-heading);
  color: var(--color-navy-900);
  margin: 0 0 var(--space-4);
}
.pf-section--dark .pf-section__heading { color: var(--color-white); }
.pf-section__heading .heading-accent { color: var(--color-periwinkle-900); }
.pf-section--dark .pf-section__heading .heading-accent { color: var(--color-periwinkle-500); }
.pf-section__sub {
  font-size: var(--text-body);
  line-height: var(--lh-prose);
  color: var(--color-navy-500);
  max-width: 640px;
  margin: 0 auto;
}
.pf-section--dark .pf-section__sub { color: rgba(255, 255, 255, 0.78); }

/* ══════════════════════════════════════════════════════════
   2. PROBLEM — three-column strikethrough
   ══════════════════════════════════════════════════════════ */
.pf-problem__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.pf-problem__col {
  position: relative;
  border: 1px solid var(--alpha-peri-12);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  background: var(--color-white);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  overflow: hidden;
}
.pf-problem__col-label {
  font-family: var(--font-primary);
  font-size: 11px;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  color: var(--color-periwinkle-900);
  margin: 0;
}
.pf-problem__col-title {
  font-size: var(--text-h4);
  font-weight: 500;
  color: var(--color-navy-900);
  margin: 0 0 var(--space-2);
  line-height: var(--lh-snug);
}
.pf-problem__col-note {
  font-size: 14px;
  color: var(--color-navy-500);
  line-height: var(--lh-prose);
  margin: 0 0 var(--space-2);
}
.pf-problem__bullets {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.pf-problem__bullets li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: 14px;
  line-height: var(--lh-prose);
  color: var(--color-navy-900);
}
.pf-problem__check {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(86, 105, 164, 0.12);
  color: var(--color-periwinkle-900);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.pf-problem__check svg { width: 11px; height: 11px; stroke: currentColor; stroke-width: 2.5; fill: none; }
.pf-problem__closer {
  text-align: center;
  margin-top: var(--space-10);
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 500;
  color: var(--color-navy-900);
  letter-spacing: var(--track-tight);
}
@media (max-width: 1023px) {
  .pf-problem__grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-5); }
}
@media (max-width: 640px) {
  .pf-problem__grid { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════════════════════
   3. STACK — 7-layer interactive explorer
   ══════════════════════════════════════════════════════════ */
.pf-stack__layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-10);
  align-items: start;
}
.pf-stack__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.pf-layer {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--alpha-peri-12);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: border-color var(--dur-fast) var(--ease-linear),
              box-shadow var(--dur-normal) var(--ease-smooth),
              transform var(--dur-normal) var(--ease-smooth);
}
.pf-layer::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--color-periwinkle-500);
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease-linear);
  pointer-events: none;
}
.pf-layer:hover {
  border-color: var(--color-periwinkle-500);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}
.pf-layer.is-open {
  border-color: var(--color-periwinkle-500);
  box-shadow: var(--shadow-md);
  background: var(--color-lavender-50);
}
.pf-layer.is-open::before { opacity: 1; }
.pf-layer__btn {
  width: 100%;
  display: grid;
  grid-template-columns: 64px 180px 1fr 40px;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  color: inherit;
  font-family: var(--font-primary);
  position: relative;
  overflow: hidden;
}
.pf-layer__num {
  font-family: var(--font-primary);
  font-size: 28px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: var(--track-tight);
  color: var(--color-periwinkle-900);
  line-height: 1;
  text-align: left;
}
.pf-layer.is-open .pf-layer__num { color: var(--color-navy-900); }
.pf-layer__name {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-navy-900);
  letter-spacing: var(--track-snug);
  line-height: var(--lh-snug);
}
.pf-layer__tag {
  font-family: var(--font-primary);
  font-size: 13px;
  color: var(--color-navy-500);
  letter-spacing: var(--track-normal);
  line-height: var(--lh-body);
}
.pf-layer__dot { display: none; }
.pf-layer__chevron {
  width: 18px;
  height: 18px;
  color: var(--color-periwinkle-900);
  justify-self: center;
  padding: 7px;
  box-sizing: content-box;
  background: var(--color-lavender-100);
  border-radius: 50%;
  transition: transform var(--dur-normal) var(--ease-smooth),
              background-color var(--dur-fast) var(--ease-linear);
}
.pf-layer:hover .pf-layer__chevron { background: var(--color-lavender-700); }
.pf-layer.is-open .pf-layer__chevron {
  transform: rotate(180deg);
  background: var(--color-periwinkle-500);
  color: var(--color-white);
}
.pf-layer__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.45s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.pf-layer__panel-inner {
  min-height: 0;
  overflow: hidden;
  padding: 0 var(--space-6) 0 calc(64px + var(--space-4) + var(--space-6));
  color: var(--color-navy-500);
  line-height: var(--lh-prose);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.35s var(--ease-smooth), transform 0.35s var(--ease-smooth);
}
.pf-layer.is-open .pf-layer__panel { grid-template-rows: 1fr; }
.pf-layer.is-open .pf-layer__panel-inner { opacity: 1; transform: translateY(0); padding-bottom: 22px; }
.pf-layer__desc {
  font-size: 15px;
  color: var(--color-navy-900);
  margin: 0 0 var(--space-4);
  padding-top: 6px;
  border-top: 1px dashed var(--alpha-peri-10);
}
.pf-layer__subtitle {
  font-family: var(--font-primary);
  font-size: 11px;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  color: var(--color-periwinkle-900);
  margin: 0 0 var(--space-2);
}
.pf-layer__list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-4);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.pf-layer__list li {
  font-size: 14px;
  color: var(--color-navy-900);
  padding-left: var(--space-4);
  position: relative;
}
.pf-layer__list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--color-periwinkle-900);
  font-weight: 700;
}
.pf-layer__pill {
  display: inline-block;
  font-family: var(--font-primary);
  font-size: 11px;
  letter-spacing: var(--track-wide);
  padding: 6px 12px;
  background: var(--alpha-peri-10);
  border: 1px solid var(--alpha-peri-12);
  color: var(--color-periwinkle-900);
  border-radius: var(--radius-pill);
}

.pf-stack__aside {
  position: sticky;
  top: 110px;
  background: var(--grad-premium-card);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow-dark);
}
.pf-stack__aside-label {
  font-family: var(--font-primary);
  font-size: 11px;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  color: var(--color-periwinkle-500);
  margin: 0 0 var(--space-3);
}
.pf-stack__aside-title {
  font-size: var(--text-h4);
  font-weight: 500;
  margin: 0 0 var(--space-4);
  color: var(--color-white);
  line-height: var(--lh-snug);
}
.pf-stack__aside-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.pf-stack__aside-list li {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  line-height: var(--lh-snug);
  padding-left: var(--space-5);
  position: relative;
}
.pf-stack__aside-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--color-periwinkle-500);
}

@media (max-width: 1023px) {
  .pf-stack__layout { grid-template-columns: 1fr; }
  .pf-stack__aside { position: static; }
}
@media (max-width: 640px) {
  .pf-layer__btn { grid-template-columns: 44px 1fr 32px; gap: var(--space-3); padding: var(--space-4) var(--space-5); }
  .pf-layer__num { font-size: 22px; }
  .pf-layer__name { font-size: var(--text-xl); }
  .pf-layer__tag { display: none; }
  .pf-layer__panel-inner { padding: 0 var(--space-5); }
  .pf-layer.is-open .pf-layer__panel-inner { padding-bottom: var(--space-5); }
}

/* ══════════════════════════════════════════════════════════
   4. AUDIENCES — three role-lane cards
   ══════════════════════════════════════════════════════════ */
.pf-lanes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.pf-lane {
  background: var(--color-white);
  border: 1px solid var(--alpha-peri-10);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.pf-lane__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 12px;
  background: var(--color-lavender-100);
  border-radius: var(--radius-pill);
  font-family: var(--font-primary);
  font-size: 11px;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  color: var(--color-periwinkle-900);
  align-self: flex-start;
}
.pf-lane__badge svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
}
.pf-lane__title {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-navy-900);
  margin: 0;
  letter-spacing: var(--track-snug);
}
.pf-lane__block-label {
  font-family: var(--font-primary);
  font-size: 10px;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  color: var(--color-navy-500);
  margin: 0 0 var(--space-2);
}
.pf-lane__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.pf-lane__list li {
  font-size: 14px;
  line-height: var(--lh-prose);
  color: var(--color-navy-900);
  padding-left: var(--space-5);
  position: relative;
}
.pf-lane__list--pains li::before {
  content: "−";
  position: absolute;
  left: 0;
  color: var(--color-danger);
  font-weight: 700;
}
.pf-lane__list--gains li::before {
  content: "+";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
}
.pf-lane__example {
  background: var(--color-lavender-50);
  border-left: 3px solid var(--color-periwinkle-500);
  padding: var(--space-4) var(--space-5);
  font-size: 13px;
  line-height: var(--lh-prose);
  color: var(--color-navy-500);
  font-style: italic;
  border-radius: 0 12px 12px 0;
}
.pf-lane__cta {
  margin-top: auto;
}
@media (max-width: 1023px) {
  .pf-lanes { grid-template-columns: repeat(2, 1fr); gap: var(--space-5); }
}
@media (max-width: 640px) {
  .pf-lanes { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════════════════════
   5. MULTI-LLM — routing diagram + feature chips
   ══════════════════════════════════════════════════════════ */
.pf-routing {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-12);
  align-items: center;
}
.pf-routing > * { min-width: 0; }
.pf-routing__copy h3 {
  font-size: var(--text-h3);
  font-weight: 500;
  color: var(--color-navy-900);
  letter-spacing: var(--track-tight);
  margin: 0 0 var(--space-4);
}
.pf-routing__copy p {
  font-size: var(--text-body);
  color: var(--color-navy-500);
  line-height: var(--lh-prose);
  margin: 0 0 var(--space-3);
}
.pf-routing__diagram {
  background: var(--color-lavender-50);
  border: 1px solid var(--alpha-peri-10);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
  max-width: 100%;
}
.pf-node {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 10px 16px;
  background: var(--color-white);
  border: 1px solid var(--alpha-peri-12);
  border-radius: var(--radius-pill);
  font-family: var(--font-primary);
  font-size: 12px;
  color: var(--color-navy-900);
  box-shadow: 0 2px 8px var(--alpha-navy-04);
  max-width: 100%;
}
.pf-node__kind {
  color: var(--color-periwinkle-900);
  letter-spacing: var(--track-wide);
  text-transform: uppercase;
  font-size: 10px;
}
.pf-node--router {
  background: var(--color-periwinkle-900);
  color: var(--color-white);
  border-color: var(--color-periwinkle-900);
}
.pf-node--router .pf-node__kind { color: rgba(255, 255, 255, 0.8); }
.pf-node--highlight {
  background: var(--color-periwinkle-500);
  color: var(--color-navy-900);
  border-color: var(--color-periwinkle-900);
}
.pf-node--gpu {
  background: var(--color-navy-900);
  color: var(--color-white);
}
.pf-node--gpu .pf-node__kind { color: rgba(255, 255, 255, 0.7); }

.pf-routing__fan {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: var(--space-4);
  justify-content: center;
}
.pf-routing__svg {
  display: block;
  max-width: 100%;
}
.pf-routing__svg path {
  stroke: var(--color-periwinkle-500);
  stroke-width: 1.5;
  fill: none;
  stroke-dasharray: 4 3;
}
@media (prefers-reduced-motion: no-preference) {
  .pf-routing__svg path { animation: pf-dash 3s linear infinite; }
}

@media (max-width: 1023px) {
  .pf-routing { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .pf-routing__diagram { padding: var(--space-4); }
  .pf-routing__fan { grid-template-columns: 1fr; gap: var(--space-2); }
}

/* ══════════════════════════════════════════════════════════
   6. PRICING — 4 tier cards with H100 visualizer
   ══════════════════════════════════════════════════════════ */
.pf-tiers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  align-items: stretch;
}
.pf-tier {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--alpha-peri-12);
  border-radius: var(--card-radius);
  padding: var(--card-padding-tight);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.pf-tier--popular {
  background: linear-gradient(160deg, var(--color-lavender-100) 0%, var(--color-white) 60%);
  border-color: var(--color-periwinkle-500);
}
.pf-tier__ribbon {
  position: absolute;
  top: -12px;
  right: var(--space-4);
  background: var(--color-periwinkle-900);
  color: var(--color-white);
  font-family: var(--font-primary);
  font-size: 10px;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}
.pf-tier__name {
  font-family: var(--font-primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  color: var(--color-periwinkle-900);
  margin: 0;
}
.pf-tier__price {
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: clamp(24px, 3.4vw, 30px);
  color: var(--color-navy-900);
  letter-spacing: var(--track-tight);
  line-height: 1.1;
}
.pf-tier__price small {
  display: block;
  font-family: var(--font-primary);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-navy-500);
  margin-top: 4px;
  letter-spacing: var(--track-normal);
}
.pf-tier__tagline {
  font-size: 13px;
  color: var(--color-navy-500);
  line-height: var(--lh-prose);
  margin: 0;
}
.pf-tier__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.pf-tier__list li {
  font-size: 13px;
  color: var(--color-navy-900);
  line-height: var(--lh-prose);
  padding-left: var(--space-4);
  position: relative;
}
.pf-tier__list li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--color-periwinkle-900);
}
.pf-h100-rack {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: var(--space-3);
  background: var(--color-lavender-50);
  border-radius: 10px;
  min-height: 56px;
  align-items: center;
}
.pf-h100 {
  width: 22px;
  height: 14px;
  position: relative;
  background: var(--color-periwinkle-500);
  border-radius: 2px;
  box-shadow: inset 0 0 0 1px var(--color-periwinkle-900);
}
.pf-h100::before, .pf-h100::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  height: 2px;
  background-image: repeating-linear-gradient(90deg, var(--color-navy-900) 0 2px, transparent 2px 4px);
}
.pf-h100::before { top: -2px; }
.pf-h100::after  { bottom: -2px; }
.pf-h100--faded { opacity: 0.4; }
.pf-h100-rack__plus {
  font-family: var(--font-primary);
  font-size: 11px;
  color: var(--color-navy-500);
  padding-left: 4px;
}
.pf-tier__cta { margin-top: auto; }
.pf-tier__cta .btn { width: 100%; justify-content: center; }

.pf-tiers-note {
  text-align: center;
  font-size: 12px;
  color: var(--color-navy-500);
  margin-top: var(--space-6);
  font-style: italic;
}

.pf-addons {
  margin-top: var(--space-10);
  padding: var(--space-6);
  background: var(--color-white);
  border: 1px dashed var(--alpha-peri-12);
  border-radius: var(--card-radius);
}
.pf-addons__title {
  font-family: var(--font-primary);
  font-size: 11px;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  color: var(--color-periwinkle-900);
  margin: 0 0 var(--space-4);
}
.pf-addons__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.pf-addon-chip {
  padding: 8px 14px;
  background: var(--color-lavender-50);
  border: 1px solid var(--alpha-peri-10);
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: var(--color-navy-500);
  cursor: pointer;
  transition: background var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast);
}
.pf-addon-chip:hover,
.pf-addon-chip.is-on {
  background: var(--color-periwinkle-900);
  color: var(--color-white);
  border-color: var(--color-periwinkle-900);
}

@media (max-width: 1100px) {
  .pf-tiers { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .pf-tiers { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════════════════════
   7. COMPARISON — matrix table
   ══════════════════════════════════════════════════════════ */
.pf-matrix-wrap {
  overflow-x: auto;
  border-radius: var(--card-radius);
  background: var(--color-white);
  border: 1px solid var(--alpha-peri-10);
}
.pf-matrix {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}
.pf-matrix th,
.pf-matrix td {
  padding: 14px 18px;
  text-align: center;
  font-size: 13px;
  border-bottom: 1px solid var(--alpha-peri-10);
  vertical-align: middle;
}
.pf-matrix th {
  font-weight: 500;
  color: var(--color-navy-900);
  background: var(--color-lavender-50);
  font-size: 12px;
  letter-spacing: var(--track-snug);
}
.pf-matrix th:first-child,
.pf-matrix td:first-child {
  text-align: left;
  font-family: var(--font-primary);
  font-size: 13px;
  color: var(--color-navy-900);
  background: var(--color-white);
  font-weight: 500;
}
.pf-matrix__us {
  background: rgba(163, 176, 217, 0.14) !important;
  color: var(--color-periwinkle-900) !important;
  font-weight: 600 !important;
}
.pf-matrix tbody tr:last-child th,
.pf-matrix tbody tr:last-child td { border-bottom: 0; }
.pf-dot {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  position: relative;
}
.pf-dot--yes { background: var(--color-success); }
.pf-dot--no  { background: var(--color-danger);  opacity: 0.8; }
.pf-dot--mid { background: var(--color-periwinkle-500); }

.pf-matrix-callout {
  text-align: center;
  margin-top: var(--space-10);
}
.pf-matrix-callout__title {
  font-size: var(--text-h3);
  font-weight: 500;
  color: var(--color-navy-900);
  letter-spacing: var(--track-tight);
  margin: 0 0 var(--space-4);
}
.pf-matrix-callout__pills {
  display: inline-flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
}
.pf-matrix-callout__pill {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--color-white);
  border: 1px solid var(--color-periwinkle-500);
  font-family: var(--font-primary);
  font-size: 12px;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  color: var(--color-periwinkle-900);
}

/* ══════════════════════════════════════════════════════════
   8. ONBOARDING — horizontal timeline
   ══════════════════════════════════════════════════════════ */
.pf-timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-6);
}
.pf-timeline__track {
  position: absolute;
  top: 22px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--color-lavender-300);
  overflow: hidden;
  z-index: 0;
}
.pf-timeline__track::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: var(--color-periwinkle-900);
  transition: width 1.4s var(--ease-out);
}
.pf-timeline.is-filled .pf-timeline__track::after { width: 100%; }
.pf-step {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}
.pf-step__num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-navy-900);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-primary);
  font-size: 15px;
  font-weight: 600;
  border: 3px solid var(--color-white);
  box-shadow: 0 0 0 1px var(--alpha-peri-12);
}
.pf-step__icon {
  width: 24px;
  height: 24px;
  color: var(--color-periwinkle-900);
}
.pf-step__icon svg { width: 100%; height: 100%; stroke: currentColor; stroke-width: 1.6; fill: none; }
.pf-step__title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-navy-900);
  margin: 0;
  letter-spacing: var(--track-snug);
}
.pf-step__desc {
  font-size: 13px;
  color: var(--color-navy-500);
  line-height: var(--lh-prose);
  margin: 0;
  max-width: 180px;
}
.pf-step__time {
  font-family: var(--font-primary);
  font-size: 10px;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  color: var(--color-periwinkle-900);
  margin-top: 4px;
}
@media (max-width: 900px) {
  .pf-timeline { grid-template-columns: 1fr; gap: var(--space-8); }
  .pf-timeline__track { display: none; }
  .pf-step { flex-direction: row; text-align: left; align-items: flex-start; gap: var(--space-4); }
  .pf-step__desc { max-width: none; }
}

/* ══════════════════════════════════════════════════════════
   9. TRUST — dataflow + trust pills
   ══════════════════════════════════════════════════════════ */
.pf-trust {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-10);
  align-items: center;
}
.pf-flow {
  background: var(--color-white);
  border: 1px solid var(--alpha-peri-10);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  position: relative;
}
.pf-flow svg {
  display: block;
  width: 100%;
  height: auto;
}
.pf-flow__outside {
  margin-top: var(--space-4);
  font-family: var(--font-primary);
  font-size: 11px;
  letter-spacing: var(--track-wide);
  color: var(--color-navy-500);
  opacity: 0.55;
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding-top: var(--space-3);
  border-top: 1px dashed var(--alpha-peri-10);
}
.pf-flow__outside-label {
  text-transform: uppercase;
  color: var(--color-navy-900);
  opacity: 1;
  margin-right: var(--space-2);
}

.pf-trust-pills {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.pf-trust-pill {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--color-white);
  border: 1px solid var(--alpha-peri-10);
  border-radius: var(--radius-lg);
}
.pf-trust-pill__icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.12);
  color: var(--color-success);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.pf-trust-pill__icon svg { width: 16px; height: 16px; stroke: currentColor; stroke-width: 2.2; fill: none; }
.pf-trust-pill__text {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-navy-900);
  line-height: var(--lh-snug);
}
.pf-trust-pill__text small {
  display: block;
  font-size: 12px;
  color: var(--color-navy-500);
  font-weight: 400;
  margin-top: 2px;
}
@media (max-width: 1023px) {
  .pf-trust { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════════════════════
   11. CTA BAND — dark full-width
   ══════════════════════════════════════════════════════════ */
.pf-ctaband {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-navy-900) 0%, var(--color-navy-500) 100%);
  color: var(--color-white);
  padding: var(--section-py) 0;
}
.pf-ctaband::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(700px 400px at 20% 20%, rgba(86, 105, 164, 0.22), transparent 70%),
    radial-gradient(500px 300px at 85% 80%, rgba(163, 176, 217, 0.14), transparent 70%);
  pointer-events: none;
}
.pf-ctaband__inner {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 var(--space-8);
  text-align: center;
}
.pf-ctaband__eyebrow {
  display: inline-block;
  font-family: var(--font-primary);
  font-size: 12px;
  letter-spacing: var(--track-widest);
  text-transform: uppercase;
  color: var(--color-periwinkle-500);
  margin-bottom: var(--space-4);
}
.pf-ctaband__title {
  font-size: var(--text-h1);
  font-weight: 500;
  color: var(--color-white);
  line-height: var(--lh-tight);
  letter-spacing: var(--track-tight);
  margin: 0 0 var(--space-8);
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}
.pf-ctaband__title .heading-accent {
  display: block;
  background: linear-gradient(90deg, #A3B0D9 0%, #EBEBF3 60%, #A3B0D9 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.pf-ctaband::after {
  content: "";
  position: absolute;
  inset: auto 0 -120px 0;
  height: 240px;
  background: radial-gradient(closest-side, rgba(163, 176, 217, 0.22), transparent 75%);
  pointer-events: none;
}
.pf-ctaband__actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}
.pf-ctaband__actions .btn--secondary {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.4);
}
.pf-ctaband__actions .btn--secondary:hover {
  background: rgba(255, 255, 255, 0.08);
}
@media (max-width: 640px) {
  .pf-ctaband__actions .btn { width: 100%; justify-content: center; }
}

/* ══════════════════════════════════════════════════════════
   Keyframes
   ══════════════════════════════════════════════════════════ */
@keyframes pf-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.4; transform: scale(0.9); }
}
@keyframes pf-dash {
  to { stroke-dashoffset: -40; }
}
@media (prefers-reduced-motion: reduce) {
  .pf-metrics__dot,
  .pf-layer__dot,
  .pf-hero__badge-dot,
  .pf-routing__svg path,
  .pf-timeline__track::after {
    animation: none !important;
    transition: none !important;
  }
  .pf-layer__btn::before { display: none; }
  .pf-timeline__track::after { width: 100%; }
}