.ai-mechanics {
  --ai-bg: #050a13;
  --ai-panel: #0b1224;
  --ai-panel-strong: #101a31;
  --ai-line: rgba(135, 152, 196, 0.2);
  --ai-text: #f4f7ff;
  --ai-muted: #a8b0c4;
  --ai-teal: #14d6c8;
  --ai-purple: #8c6bff;
  --ai-coral: #ff4f70;
  color: var(--ai-text);
  background:
    radial-gradient(circle at 12% 5%, rgba(20, 214, 200, 0.12), transparent 28rem),
    radial-gradient(circle at 88% 18%, rgba(140, 107, 255, 0.14), transparent 30rem),
    var(--ai-bg);
  overflow: hidden;
}

.ai-mechanics *,
.ai-mechanics *::before,
.ai-mechanics *::after {
  box-sizing: border-box;
}

.ai-mechanics a {
  color: inherit;
}

.ai-container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.ai-hero {
  padding: clamp(72px, 9vw, 128px) 0 clamp(72px, 9vw, 116px);
  border-bottom: 1px solid var(--ai-line);
}

.ai-hero__grid,
.ai-proof {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr);
  gap: clamp(42px, 7vw, 92px);
  align-items: center;
}

.ai-breadcrumb {
  display: inline-flex;
  gap: 8px;
  margin-bottom: 34px;
  color: var(--ai-muted) !important;
  font-size: 0.9rem;
  text-decoration: none;
}

.ai-breadcrumb:hover {
  color: var(--ai-teal) !important;
}

.ai-eyebrow,
.ai-step {
  display: block;
  color: var(--ai-teal);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  line-height: 1.4;
}

.ai-hero h1 {
  max-width: 760px;
  margin: 16px 0 24px;
  font-size: clamp(3rem, 6.4vw, 6.5rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.ai-hero__lead {
  max-width: 700px;
  margin: 0;
  color: var(--ai-muted);
  font-size: clamp(1.12rem, 2vw, 1.42rem);
  line-height: 1.72;
}

.ai-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.ai-actions--center {
  justify-content: center;
}

.ai-button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  text-align: center;
  text-decoration: none !important;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.ai-button:hover {
  transform: translateY(-2px);
}

.ai-button--primary {
  color: #031310 !important;
  background: var(--ai-teal);
  box-shadow: 0 16px 42px rgba(20, 214, 200, 0.18);
}

.ai-button--secondary {
  color: var(--ai-text) !important;
  border-color: rgba(168, 176, 196, 0.35);
  background: rgba(14, 23, 43, 0.76);
}

.ai-button--secondary:hover {
  border-color: var(--ai-teal);
}

.ai-proof-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin: 28px 0 0;
  padding: 0;
  color: var(--ai-muted);
  font-size: 0.9rem;
  list-style: none;
}

.ai-proof-list li::before {
  margin-right: 8px;
  color: var(--ai-teal);
  content: "✓";
}

.ai-hero__media {
  position: relative;
  min-height: 690px;
}

.ai-phone {
  width: min(100%, 340px);
  margin: 0;
  padding: 9px;
  border: 1px solid rgba(126, 149, 203, 0.28);
  border-radius: 38px;
  background: linear-gradient(145deg, #172139, #070b13);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.42);
}

.ai-phone__link {
  display: block;
  overflow: hidden;
  border-radius: 30px;
  background: #050a13;
}

.ai-phone img {
  display: block;
  width: 100%;
  height: auto;
}

.ai-phone figcaption {
  padding: 13px 7px 7px;
  color: var(--ai-muted);
  font-size: 0.82rem;
  line-height: 1.5;
  text-align: center;
}

.ai-phone--hero {
  position: absolute;
  width: min(76%, 330px);
}

.ai-phone--front {
  z-index: 2;
  right: 2%;
  top: 0;
  transform: rotate(2.5deg);
}

.ai-phone--back {
  z-index: 1;
  left: 0;
  top: 82px;
  opacity: 0.78;
  transform: rotate(-4deg) scale(0.93);
}

.ai-section {
  padding: clamp(74px, 9vw, 124px) 0;
  border-bottom: 1px solid var(--ai-line);
}

.ai-section--tint {
  background: linear-gradient(180deg, rgba(16, 26, 49, 0.66), rgba(7, 12, 23, 0.4));
}

.ai-section--comparison {
  background: rgba(4, 8, 16, 0.7);
}

.ai-section__heading {
  max-width: 840px;
  margin: 0 auto 46px;
  text-align: center;
}

.ai-section__heading h2,
.ai-proof__copy h2,
.ai-cta h2 {
  margin: 14px 0 18px;
  font-size: clamp(2.15rem, 4.5vw, 4.3rem);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.ai-section__heading p,
.ai-proof__copy > p,
.ai-cta p {
  color: var(--ai-muted);
  font-size: 1.08rem;
  line-height: 1.75;
}

.ai-comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.ai-comparison-card {
  min-height: 100%;
  padding: clamp(26px, 4vw, 44px);
  border: 1px solid var(--ai-line);
  border-radius: 28px;
  background: var(--ai-panel);
}

.ai-comparison-card--active {
  border-color: rgba(20, 214, 200, 0.48);
  background:
    linear-gradient(150deg, rgba(20, 214, 200, 0.1), transparent 60%),
    var(--ai-panel-strong);
}

.ai-comparison-card--muted {
  opacity: 0.82;
}

.ai-card-number {
  color: var(--ai-teal);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.ai-comparison-card h3 {
  margin: 14px 0 24px;
  font-size: clamp(1.5rem, 2.8vw, 2.25rem);
}

.ai-comparison-card ol {
  display: grid;
  gap: 16px;
  margin: 0;
  padding-left: 22px;
  color: var(--ai-muted);
  line-height: 1.65;
}

.ai-proof--reverse .ai-proof__copy {
  order: 2;
}

.ai-proof--reverse .ai-proof__media {
  order: 1;
}

.ai-proof__copy {
  max-width: 650px;
}

.ai-proof__media {
  display: flex;
  justify-content: center;
}

.ai-phone-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 260px));
  gap: 18px;
  align-items: start;
}

.ai-phone--compact {
  width: 100%;
  border-radius: 28px;
  padding: 7px;
}

.ai-phone--compact .ai-phone__link {
  border-radius: 22px;
}

.ai-check-list {
  display: grid;
  gap: 14px;
  margin: 28px 0;
  padding: 0;
  list-style: none;
}

.ai-check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--ai-text);
  line-height: 1.6;
}

.ai-check-list li::before {
  position: absolute;
  left: 0;
  top: 0.08em;
  color: var(--ai-teal);
  font-weight: 900;
  content: "✓";
}

.ai-transparency {
  margin-top: 30px;
  padding: 20px 22px;
  border: 1px solid rgba(140, 107, 255, 0.36);
  border-radius: 20px;
  background: rgba(140, 107, 255, 0.08);
}

.ai-transparency strong {
  display: block;
  margin-bottom: 6px;
  color: #d8ceff;
}

.ai-transparency p {
  margin: 0;
  color: var(--ai-muted);
  line-height: 1.65;
}

.ai-signal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 30px 0;
}

.ai-signal-grid div {
  padding: 18px;
  border: 1px solid var(--ai-line);
  border-radius: 18px;
  background: rgba(7, 12, 23, 0.68);
}

.ai-signal-grid strong,
.ai-signal-grid span {
  display: block;
}

.ai-signal-grid strong {
  margin-bottom: 6px;
  color: var(--ai-teal);
}

.ai-signal-grid span {
  color: var(--ai-muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.ai-numbered-list {
  display: grid;
  gap: 18px;
  margin: 30px 0;
  padding: 0;
  list-style: none;
}

.ai-numbered-list li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.ai-numbered-list li > span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(20, 214, 200, 0.45);
  border-radius: 50%;
  color: var(--ai-teal);
  font-weight: 900;
  background: rgba(20, 214, 200, 0.08);
}

.ai-numbered-list strong {
  display: block;
  margin-bottom: 4px;
}

.ai-numbered-list p {
  margin: 0;
  color: var(--ai-muted);
  line-height: 1.55;
}

.ai-section--boundaries {
  background:
    radial-gradient(circle at 50% 20%, rgba(255, 79, 112, 0.08), transparent 26rem),
    #060b15;
}

.ai-boundary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.ai-boundary-grid article {
  padding: 24px;
  border: 1px solid var(--ai-line);
  border-radius: 20px;
  background: var(--ai-panel);
}

.ai-boundary-grid strong {
  color: var(--ai-teal);
}

.ai-boundary-grid p {
  margin: 10px 0 0;
  color: var(--ai-muted);
  line-height: 1.6;
}

.ai-faq {
  max-width: 920px;
}

.ai-faq__items {
  display: grid;
  gap: 12px;
}

.ai-faq details {
  border: 1px solid var(--ai-line);
  border-radius: 18px;
  background: var(--ai-panel);
}

.ai-faq summary {
  padding: 20px 54px 20px 22px;
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}

.ai-faq summary::-webkit-details-marker {
  display: none;
}

.ai-faq summary::after {
  float: right;
  margin-right: -32px;
  color: var(--ai-teal);
  content: "+";
}

.ai-faq details[open] summary::after {
  content: "−";
}

.ai-faq details p {
  margin: 0;
  padding: 0 22px 22px;
  color: var(--ai-muted);
  line-height: 1.7;
}

.ai-cta {
  padding: clamp(78px, 10vw, 140px) 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(20, 214, 200, 0.16), transparent 32rem),
    var(--ai-bg);
}

.ai-cta__inner {
  max-width: 920px;
  text-align: center;
}

.ai-cta p {
  margin: 0;
}

@media (max-width: 980px) {
  .ai-hero__grid,
  .ai-proof {
    grid-template-columns: 1fr;
  }

  .ai-hero__copy,
  .ai-proof__copy {
    max-width: 780px;
  }

  .ai-hero__media {
    width: min(680px, 100%);
    min-height: 670px;
    margin: 10px auto 0;
  }

  .ai-proof--reverse .ai-proof__copy,
  .ai-proof--reverse .ai-proof__media {
    order: initial;
  }

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

@media (max-width: 680px) {
  .ai-container {
    width: min(100% - 28px, 1180px);
  }

  .ai-hero {
    padding-top: 54px;
  }

  .ai-hero h1 {
    font-size: clamp(2.8rem, 15vw, 4.6rem);
  }

  .ai-hero__media {
    min-height: 560px;
  }

  .ai-phone--hero {
    width: min(76%, 285px);
  }

  .ai-comparison-grid,
  .ai-boundary-grid,
  .ai-signal-grid {
    grid-template-columns: 1fr;
  }

  .ai-phone-pair {
    width: min(100%, 390px);
    grid-template-columns: 1fr;
  }

  .ai-phone--compact {
    border-radius: 34px;
    padding: 8px;
  }

  .ai-phone--compact .ai-phone__link {
    border-radius: 27px;
  }

  .ai-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .ai-button {
    width: 100%;
  }

  .ai-proof-list {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ai-button {
    transition: none;
  }

  .ai-button:hover {
    transform: none;
  }
}