:root {
  --bg: #eff4f3;
  --panel: rgba(255, 255, 255, 0.92);
  --panel-solid: #ffffff;
  --line: rgba(15, 23, 42, 0.1);
  --line-strong: rgba(15, 23, 42, 0.16);
  --text: #0f172a;
  --muted: #526072;
  --soft: #6f7f92;
  --accent: #0f766e;
  --accent-strong: #0d5f5d;
  --accent-soft: rgba(15, 118, 110, 0.12);
  --mint: #2563eb;
  --shadow: 0 30px 90px rgba(15, 23, 42, 0.12);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "SF Pro Display", "Segoe UI", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.12), transparent 34%),
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.12), transparent 26%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 58%, #edf3f4 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

code,
pre {
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
}

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.section {
  padding: 88px 0;
}

.muted {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.1));
}

.site-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(248, 251, 255, 0.78);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--mint));
  box-shadow: 0 0 0 10px rgba(22, 119, 255, 0.08);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-copy strong {
  font-size: 16px;
}

.brand-copy span {
  font-size: 12px;
  color: var(--soft);
}

.topnav,
.top-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.topnav a:hover,
.ghost-link:hover {
  color: var(--text);
}

.hero {
  padding: 84px 0 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--accent-strong);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.hero h1,
.section-heading h2,
.cta-panel h2,
.docs-sticky h1 {
  margin: 16px 0 0;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.hero h1 {
  max-width: 12ch;
  font-size: clamp(42px, 6vw, 74px);
}

.hero-text,
.section-heading p,
.doc-card p,
.reason p,
.step-card p,
.model-card p,
.info-card p,
.faq-answer p,
.doc-card li {
  color: var(--muted);
  line-height: 1.75;
}

.hero-text {
  max-width: 60ch;
  margin: 24px 0 0;
  font-size: 18px;
}

.mini-eyebrow {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.primary-btn {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #4f8cff 62%, var(--mint));
  box-shadow: 0 20px 40px rgba(22, 119, 255, 0.24);
}

.secondary-btn {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(15, 23, 42, 0.1);
}

.primary-btn:hover,
.secondary-btn:hover {
  transform: translateY(-1px);
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.hero-proof li,
.stat-strip div,
.info-card,
.model-card,
.reason,
.step-card,
.doc-card,
.faq-item,
.cta-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-proof li {
  min-height: 92px;
  padding: 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  line-height: 1.55;
}

.hero-subgrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.hero-subcard {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
}

.hero-subcard strong,
.flow-card h3,
.quickstart-band__copy strong,
.docs-sidebar-note strong,
.docs-ops-card strong {
  display: block;
  margin: 10px 0 6px;
  font-size: 16px;
  letter-spacing: -0.02em;
}

.hero-subcard p,
.flow-card p,
.quickstart-band__copy p,
.docs-sidebar-note p,
.docs-ops-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 13px;
}

.hero-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero-card {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(7, 12, 24, 0.98), rgba(17, 24, 39, 0.94));
  color: rgba(241, 245, 249, 0.96);
  box-shadow: 0 28px 60px rgba(15, 23, 42, 0.22);
}

.terminal-head {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
}

.terminal-head span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(241, 245, 249, 0.32);
}

.terminal-head span:first-child {
  background: #ff7b7b;
}

.terminal-head span:nth-child(2) {
  background: #ffd84d;
}

.terminal-head span:last-child {
  background: #4ddf8d;
}

.hero-card pre {
  margin: 0;
  white-space: pre-wrap;
  font-size: 14px;
  line-height: 1.75;
}

.stat-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.stat-strip div {
  border-radius: var(--radius-sm);
  padding: 18px;
}

.stat-strip strong {
  display: block;
  font-size: 26px;
  letter-spacing: -0.04em;
}

.stat-strip span {
  color: var(--muted);
  font-size: 13px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

.section-heading h2 {
  font-size: clamp(30px, 4vw, 48px);
}

.compact-flow {
  padding-top: 20px;
}

.flow-heading {
  margin-bottom: 22px;
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.flow-card {
  padding: 22px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--line);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
}

.flow-card small {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 700;
}

.supported-models {
  padding-top: 20px;
}

.provider-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.provider-card {
  padding: 24px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--line);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
}

.provider-card strong {
  display: block;
  margin: 10px 0 8px;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.provider-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

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

.info-card,
.reason,
.step-card,
.doc-card {
  border-radius: var(--radius-md);
  padding: 24px;
}

.info-card h3,
.model-card h3,
.reason h3,
.step-card h3,
.doc-card h2 {
  margin: 0 0 12px;
  font-size: 22px;
  letter-spacing: -0.03em;
}

.model-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.model-card {
  border-radius: var(--radius-md);
  padding: 28px;
}

.model-card ul,
.doc-card ol {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.75;
}

.reason strong,
.step-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 700;
  margin-bottom: 16px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-trigger {
  width: 100%;
  text-align: left;
  padding: 22px 24px;
  border: 0;
  background: transparent;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  color: var(--text);
}

.faq-answer {
  display: none;
  padding: 0 24px 22px;
}

.faq-item.is-open .faq-answer {
  display: block;
}

.cta-band {
  padding-top: 0;
}

.cta-panel {
  border-radius: calc(var(--radius-lg) + 8px);
  padding: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.surface-map {
  padding-top: 10px;
}

.surface-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.surface-card {
  padding: 24px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--line);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
}

.surface-card strong {
  display: block;
  margin: 10px 0 8px;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.surface-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.surface-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 14px;
  margin-top: 16px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.04);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
}

.docs-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.docs-sticky {
  position: sticky;
  top: 104px;
  padding: 26px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
}

.docs-sticky nav {
  display: grid;
  gap: 12px;
  margin-top: 22px;
  color: var(--muted);
}

.docs-content {
  display: grid;
  gap: 16px;
}

.quickstart-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 22px;
  padding: 22px 24px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--line);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
}

.quickstart-band__copy {
  max-width: 760px;
}

.quickstart-band__links,
.docs-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.quickstart-band__links a,
.docs-ops-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.04);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
}

.doc-card-hero {
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.96), rgba(37, 99, 235, 0.9)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0));
  border-color: rgba(15, 118, 110, 0.16);
  color: #ffffff;
}

.doc-card-hero h2,
.doc-card-hero p,
.doc-card-hero .mini-eyebrow {
  color: #ffffff;
}

.docs-sidebar-note {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.docs-ops-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.docs-ops-card {
  padding: 18px;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.03);
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.about-main {
  position: relative;
  overflow: hidden;
}

.about-main::before,
.about-main::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  pointer-events: none;
  opacity: 0.9;
  filter: blur(18px);
  animation: aboutFloat 14s ease-in-out infinite alternate;
}

.about-main::before {
  top: 48px;
  right: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(15, 118, 110, 0.2), rgba(15, 118, 110, 0));
}

.about-main::after {
  left: -140px;
  bottom: 120px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.18), rgba(37, 99, 235, 0));
  animation-duration: 18s;
}

.about-hero {
  position: relative;
  padding: 72px 0 30px;
}

.about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 24px;
  align-items: stretch;
}

.about-panel {
  position: relative;
  padding: 34px;
  border-radius: 30px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.74)),
    linear-gradient(135deg, rgba(15, 118, 110, 0.08), rgba(37, 99, 235, 0.08));
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: var(--shadow);
}

.about-panel--hero {
  min-height: 100%;
}

.about-orbit {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.08);
}

.about-orbit span {
  display: inline-flex;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--mint));
  animation: aboutPulse 2.2s ease-in-out infinite;
}

.about-orbit strong {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #405167;
}

.about-hero h1 {
  margin: 18px 0 0;
  max-width: 12ch;
  font-size: clamp(44px, 6vw, 74px);
  line-height: 0.96;
  letter-spacing: -0.07em;
}

.about-lead {
  max-width: 58ch;
  margin: 20px 0 0;
  font-size: 18px;
  line-height: 1.8;
  color: var(--muted);
}

.about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.about-signal {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.about-signal article {
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.04);
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.about-signal strong {
  display: block;
  font-size: 26px;
  line-height: 1;
}

.about-signal span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.about-stack {
  display: grid;
  gap: 18px;
}

.about-stack-card {
  padding: 24px;
  border-radius: 24px;
  background: rgba(15, 23, 42, 0.03);
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.about-stack-card h2,
.about-story-card h2,
.about-principles h2,
.about-cta h2 {
  margin: 0;
  font-size: 24px;
  line-height: 1.15;
}

.about-stack-card p,
.about-story-card p,
.about-cta p {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.about-mini-grid {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.about-mini-grid article {
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(15, 23, 42, 0.08);
}

.about-mini-grid strong {
  display: block;
  font-size: 14px;
}

.about-mini-grid span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.about-story {
  padding-top: 18px;
}

.about-story-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 24px;
  align-items: stretch;
}

.about-story-card,
.about-principles,
.about-cta {
  padding: 32px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 24px 64px rgba(15, 23, 42, 0.08);
}

.about-principles {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.76)),
    linear-gradient(135deg, rgba(15, 118, 110, 0.06), rgba(37, 99, 235, 0.05));
}

.about-principles-grid {
  margin-top: 18px;
  display: grid;
  gap: 14px;
}

.about-principles-grid article {
  padding: 18px 20px;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.03);
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.about-principles-grid strong {
  display: block;
  font-size: 15px;
}

.about-principles-grid p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 14px;
}

.about-cta {
  margin-top: 24px;
  text-align: center;
}

.about-cta .hero-actions {
  justify-content: center;
  margin-top: 22px;
}

@keyframes aboutFloat {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(0, -18px, 0) scale(1.06);
  }
}

@keyframes aboutPulse {
  0%,
  100% {
    transform: scale(0.9);
    opacity: 0.72;
  }
  50% {
    transform: scale(1.15);
    opacity: 1;
  }
}

.doc-card pre {
  overflow: auto;
  margin: 16px 0 0;
  padding: 18px;
  border-radius: 18px;
  background: #09111d;
  color: #f8fafc;
}

.site-footer {
  padding: 34px 0 48px;
}

.site-footer__inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
}

.site-footer__inner strong {
  display: block;
  font-size: 15px;
}

.site-footer__inner p {
  margin: 10px 0 0;
  max-width: 620px;
  color: var(--muted);
  line-height: 1.7;
  font-size: 13px;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer__links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.04);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
}

@media (max-width: 1080px) {
  .hero-grid,
  .docs-layout,
  .model-groups,
  .capability-grid,
  .reason-grid,
  .steps-grid,
  .flow-grid,
  .provider-grid,
  .docs-ops-grid,
  .surface-grid,
  .about-hero__grid,
  .about-story-grid,
  .about-signal {
    grid-template-columns: 1fr;
  }

  .hero-proof,
  .hero-subgrid {
    grid-template-columns: 1fr;
  }

  .cta-panel,
  .topbar-inner,
  .quickstart-band,
  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .about-panel,
  .about-story-card,
  .about-principles,
  .about-cta {
    padding: 26px;
  }
}

@media (max-width: 760px) {
  .topnav,
  .top-actions {
    flex-wrap: wrap;
  }

  .hero {
    padding-top: 48px;
  }

  .about-hero {
    padding-top: 44px;
  }

  .about-actions,
  .about-cta .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .about-signal strong {
    font-size: 22px;
  }

  .section {
    padding: 64px 0;
  }

  .hero h1 {
    max-width: none;
  }
}