/* White-only website. Surface radius 18px; interactive controls 10px. */
.research-section {display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start}
.research-section .section-heading {margin-bottom:0}
.research-section .evidence-layout {display:block}
.research-section .boundaries {border-left:0;padding-left:0}
@media(prefers-reduced-motion:no-preference){
  .text-link .icon,.nav-cta .icon {transition:transform .25s cubic-bezier(.16,1,.3,1)}
  .text-link:hover .icon,.nav-cta:hover .icon {transform:translate(3px,-2px)}
  .hero-art img {transition:transform .8s cubic-bezier(.16,1,.3,1)}
  .hero-art:hover img {transform:scale(1.035)}
  .feature,.model-callout,.product-shot img {transition:transform .45s cubic-bezier(.16,1,.3,1),box-shadow .45s,border-color .45s}
  @media(hover:hover){.feature:hover,.model-callout:hover{transform:translateY(-4px);border-color:#cdd2db;box-shadow:0 16px 40px #30374408}.product-shot a:hover img{transform:translateY(-3px)}}
  .brand-symbol {transition:transform .4s cubic-bezier(.16,1,.3,1)}
  .brand:hover .brand-symbol {transform:rotate(-7deg)}
}
@media(max-width:767px){.research-section{grid-template-columns:1fr;gap:30px}.research-section .boundaries{border-top:0;padding-top:0}}
:root,
:root[data-theme="light"],
:root[data-theme="dark"] {
  color-scheme: light;
  --bg: #fff;
  --surface: #fafafb;
  --card: #fff;
  --ink: #25272c;
  --muted: #636872;
  --accent: #373c46;
  --line: #e4e7ec;
  --soft: #f4f5f7;
  --button: #292d35;
  --button-ink: #fff;
  --radius: 18px;
}
.site-header {
  background: rgba(255, 255, 255, 0.97);
}
.nav-shell {
  height: 76px;
}
.brand-mark {
  font-family: Geist, sans-serif;
  font-weight: 600;
  font-size: 20px;
  line-height: 34px;
  width: 31px;
  border-radius: 9px;
}
.nav-cta {
  border-radius: 10px;
  box-shadow: 0 2px 4px #30374405;
}
nav {
  font-size: 13px;
  color: #5c6370;
}
.container {
  max-width: 1240px;
}
.hero {
  min-height: 610px;
  gap: 45px;
  padding-block: 72px;
}
.hero-art {
  border-radius: 24px;
  aspect-ratio: 1.12;
  background: #f5f5f6;
}
.hero-art img {
  object-fit: cover;
}
.brand-symbol {width:36px;height:36px;object-fit:contain;margin-right:3px}
.hero-art {background:#fff;border:1px solid #f0f1f3}
.portable-art {width:100%;height:210px;object-fit:contain;object-position:center;margin-top:22px;border-radius:12px}
.feature-portable .file-pair {margin-top:18px}
h1 {
  letter-spacing: -0.065em;
  font-weight: 530;
}
h1 span {
  color: #858c98;
}
.hero-description {
  color: var(--muted);
}
.eyebrow {
  color: #656e7b;
  font-size: 10px;
  letter-spacing: 0.16em;
}
.primary {
  box-shadow:
    0 3px 6px #30374412,
    inset 0 1px #ffffff20;
}
.button {
  border-radius: 10px;
}
.button:hover {
  filter: brightness(1.15);
}
h2 {
  font-weight: 530;
  letter-spacing: -0.055em;
}
.section {
  padding-block: 96px;
}
.section-heading > p:not(.eyebrow) {
  font-size: 15px;
}
.icon {
  display: inline-block;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  vertical-align: middle;
  background: currentColor;
  mask: var(--icon) center/contain no-repeat;
  -webkit-mask: var(--icon) center/contain no-repeat;
}
.text-link,
.nav-cta {
  gap: 13px;
}
.text-link .icon,
.nav-cta .icon {
  width: 17px;
  height: 17px;
}
.principles {
  gap: 32px;
  padding-block: 30px;
}
.principles p {
  display: grid;
  grid-template-columns: 34px 1fr;
  column-gap: 12px;
  align-items: center;
}
.principles .icon {
  grid-row: 1/3;
  width: 23px;
  height: 23px;
  color: #68717f;
}
.principles strong {
  font-size: 13px;
}
.principles span:not(.icon) {
  font-size: 11px;
  color: var(--muted);
}
.feature {
  padding: 36px;
  border-radius: 18px;
}
.surface-label {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #656e7b;
  font-weight: 500;
}
.surface-label .icon {
  width: 18px;
  height: 18px;
}
.feature-desktop {
  grid-template-columns: 0.75fr 1.25fr;
  gap: 48px;
  background: linear-gradient(135deg, #fff, #f6f7f9);
  padding: 44px 36px;
}
.feature-desktop h3 {
  font-size: 35px;
  letter-spacing: -0.05em;
}
.feature-portable {
  background: #fff;
}
.feature-cli pre {
  color: #586372;
  border-color: var(--line);
}
.product-shot img {
  border: 1px solid #e1e4e9;
  border-radius: 10px;
  box-shadow: 0 14px 28px #30374410;
}
.file-pair span {
  display: flex;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 13px 15px;
  background: #fafafb;
}
.file-pair .icon {
  width: 16px;
  height: 16px;
}
.workflow-section {
  background: #fff;
  border-block: 1px solid var(--line);
}
.workflow-steps button {
  border-radius: 12px;
}
.workflow-steps button[aria-selected="true"] {
  background: #f6f7f9;
  border: 1px solid #e4e7ec;
  box-shadow: none;
}
.workflow-steps button:hover {
  background: #fafafb;
}
.workflow-panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 5px 22px #30374405;
}
.workflow-panel pre {
  border: 1px solid #e9ecf1;
  border-radius: 10px;
  background: #f7f8fa;
  color: #586372;
}
.step-num {
  color: #656e7b;
}
.model-options article {
  position: relative;
  padding-left: 44px;
}
.model-options article > .icon {
  position: absolute;
  left: 0;
  top: 24px;
  width: 23px;
  height: 23px;
  color: #68717f;
}
.model-options article:first-child > .icon {
  top: 3px;
}
.model-callout {
  border: 1px solid var(--line);
  background: #fbfbfc;
  border-radius: 18px;
}
.large-type {
  color: #737c8a;
}
.test-count {
  color: #4d5869;
}
.start-section {
  background: #fafafb;
  border-block: 1px solid var(--line);
}
.code-block {
  border-radius: 14px;
  box-shadow: 0 3px 10px #30374404;
}
.code-block pre {
  color: #586372;
}
.copy-button {
  display: flex;
  align-items: center;
  gap: 7px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 7px;
}
.copy-button .icon {
  width: 13px;
  height: 13px;
}
.faq summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary .icon {
  color: #8b94a2;
  width: 17px;
  height: 17px;
  transition: transform 0.2s;
}
.faq details[open] summary .icon {
  transform: rotate(45deg);
}
.site-footer > a:last-child {
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-footer .icon {
  width: 15px;
  height: 15px;
}
@media (prefers-reduced-motion: no-preference) {
  .hero-copy,
  .hero-art {
    animation: arrive 0.65s ease-out both;
  }
  .hero-art {
    animation-delay: 0.08s;
  }
  @keyframes arrive {
    from {
      opacity: 0;
      transform: translateY(14px);
    }
    to {
      opacity: 1;
      transform: none;
    }
  }
}
@media (max-width: 1024px) {
  .hero {
    min-height: 530px;
    gap: 25px;
    padding-block: 55px;
  }
  .section {
    padding-block: 78px;
  }
  .feature-desktop {
    gap: 26px;
    padding: 30px;
  }
  .feature-desktop h3 {
    font-size: 30px;
  }
  .feature {
    padding: 30px;
  }
}
@media (max-width: 767px) {
  .nav-shell {
    height: 68px;
  }
  .menu-button {
    display: flex;
    align-items: center;
    gap: 7px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 9px 11px;
    background: #fff;
  }
  .menu-button .icon {
    width: 16px;
    height: 16px;
  }
  .hero {
    min-height: 0;
    padding-block: 46px 35px;
    gap: 34px;
  }
  .hero-art {
    aspect-ratio: 1.5;
    border-radius: 18px;
  }
  .button-row {
    flex-wrap: wrap;
  }
  .principles p {
    grid-template-columns: 30px 1fr;
    gap: 0 12px;
  }
  .principles strong {
    font-size: 13px;
  }
  .principles span:not(.icon) {
    font-size: 11px;
  }
  .section {
    padding-block: 60px;
  }
  .feature-desktop {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .feature {
    padding: 25px;
  }
  .feature-desktop h3 {
    font-size: 30px;
  }
  .section-heading > p:not(.eyebrow) {
    font-size: 14px;
  }
  .model-options article > .icon {
    top: 23px;
  }
  .workflow-steps button {
    border: 1px solid transparent;
  }
  .faq summary {
    font-size: 13px;
  }
  .model-callout {
    padding: 30px;
  }
}