:root {
  color-scheme: dark;
  --bg: oklch(0.17 0.015 245);
  --bg-2: oklch(0.205 0.017 245);
  --surface: oklch(0.24 0.019 245);
  --surface-2: oklch(0.285 0.02 245);
  --ink: oklch(0.97 0.008 70);
  --muted: oklch(0.76 0.018 245);
  --line: oklch(0.36 0.02 245);
  --accent: oklch(0.68 0.22 37);
  --accent-strong: oklch(0.61 0.24 35);
  --accent-ink: oklch(0.17 0.025 32);
  --success: oklch(0.76 0.14 145);
  --focus: oklch(0.82 0.14 230);
  --max: 1180px;
  --radius: 14px;
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.7;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 30;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--bg);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: none;
}

.shell {
  width: min(var(--max), calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid color-mix(in oklch, var(--accent-ink) 24%, transparent);
  background: var(--accent);
  color: var(--accent-ink);
}

.site-header .shell {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 750;
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
  font-weight: 650;
}

.nav a {
  text-decoration: none;
}

.nav a:hover {
  text-decoration: underline;
}

.nav .nav-cta {
  padding: 8px 13px;
  border-radius: 999px;
  background: var(--accent-ink);
  color: var(--ink);
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--accent);
  color: var(--accent-ink);
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  min-height: min(680px, calc(100svh - 104px));
  padding-block: clamp(64px, 9vw, 112px);
}

.hero-copy {
  width: min(38%, 520px);
  min-width: 0;
}

.status-line {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 22px;
  font-size: 14px;
  font-weight: 700;
}

.status-dot {
  width: 9px;
  height: 9px;
  border: 2px solid currentColor;
  border-radius: 50%;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.1;
  letter-spacing: 0;
  text-wrap: balance;
}

h1 {
  max-width: 12ch;
  margin-bottom: 24px;
  font-size: clamp(3.25rem, 6.2vw, 5.6rem);
  font-weight: 800;
}

.hero-copy > p {
  max-width: 56ch;
  margin: 0 0 30px;
  font-size: clamp(1.05rem, 1.5vw, 1.24rem);
  font-weight: 520;
}

.hero-copy,
.product-shot {
  min-width: 0;
}

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

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--accent-ink);
  border-radius: 10px;
  font-weight: 720;
  text-decoration: none;
  transition: transform 180ms cubic-bezier(0.25, 1, 0.5, 1), background 180ms ease;
}

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

.button.primary {
  background: var(--accent-ink);
  color: var(--ink);
}

.button.secondary:hover {
  background: color-mix(in oklch, var(--ink) 14%, transparent);
}

.hero-note {
  margin-top: 18px;
  font-size: 13px;
  font-weight: 600;
}

.product-shot {
  position: relative;
  margin: 0;
  transform: rotate(1.2deg);
}

.product-shot img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 8px 0 color-mix(in oklch, var(--accent-ink) 42%, transparent);
}

.product-shot figcaption {
  margin-top: 14px;
  font-size: 13px;
  font-weight: 650;
  text-align: right;
}

.trust-strip {
  border-block: 1px solid var(--line);
  background: var(--bg-2);
}

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

.trust-strip strong {
  font-size: 15px;
}

.trust-items {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  color: var(--muted);
  font-size: 14px;
}

.trust-items span::before {
  color: var(--success);
  content: "✓";
  margin-right: 8px;
  font-weight: 800;
}

.section {
  padding-block: clamp(84px, 11vw, 150px);
}

.section.alt {
  background: var(--bg-2);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(300px, 0.62fr);
  gap: 48px;
  align-items: end;
  margin-bottom: clamp(48px, 7vw, 82px);
}

.section-heading h2,
.document h1 {
  margin-bottom: 0;
  font-size: clamp(2.35rem, 4.5vw, 4.4rem);
  font-weight: 780;
}

.section-heading p {
  max-width: 58ch;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.feature-stack {
  border-top: 1px solid var(--line);
}

.feature-row {
  display: grid;
  grid-template-columns: minmax(180px, 0.36fr) minmax(0, 1fr) 42px;
  gap: 36px;
  align-items: baseline;
  padding-block: 30px;
  border-bottom: 1px solid var(--line);
}

.feature-row h3 {
  margin: 0;
  font-size: 1.05rem;
  color: var(--accent);
}

.feature-row p {
  max-width: 62ch;
  margin: 0;
  color: var(--muted);
}

.feature-row b {
  font-size: 1.5rem;
  text-align: right;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-block: 1px solid var(--line);
}

.step {
  min-height: 270px;
  padding: 30px;
  border-right: 1px solid var(--line);
}

.step:last-child {
  border-right: 0;
}

.step span {
  display: block;
  margin-bottom: 62px;
  color: var(--accent);
  font-weight: 750;
}

.step h3 {
  margin-bottom: 14px;
  font-size: 1.35rem;
}

.step p {
  margin: 0;
  color: var(--muted);
}

.gallery {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 18px;
}

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

.gallery.two figure:first-child {
  grid-row: auto;
}

.gallery figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--surface);
}

.gallery figure:first-child {
  grid-row: span 2;
}

.gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.boundary-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(340px, 1fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: start;
}

.boundary-grid h2 {
  font-size: clamp(2.4rem, 4vw, 4rem);
}

.boundary-copy {
  border-top: 1px solid var(--line);
}

.boundary-item {
  padding-block: 24px;
  border-bottom: 1px solid var(--line);
}

.boundary-item strong {
  display: block;
  margin-bottom: 7px;
  font-size: 1.05rem;
}

.boundary-item p {
  margin: 0;
  color: var(--muted);
}

.source-button {
  margin-top: 24px;
  border-color: var(--line);
}

.install-actions {
  margin-top: 24px;
}

.install-actions .source-button {
  margin-top: 0;
}

.source-button:hover {
  background: var(--surface);
}

.install-steps {
  border-top: 1px solid var(--line);
}

.install-steps > div {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 18px;
  padding-block: 22px;
  border-bottom: 1px solid var(--line);
}

.install-steps span {
  color: var(--accent);
  font-weight: 750;
}

.install-steps p {
  margin: 0;
  color: var(--muted);
}

.install-steps > a {
  display: inline-block;
  margin-top: 22px;
  color: var(--accent);
  font-weight: 700;
}

.data-flow {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.data-node {
  flex: 1;
  min-width: 0;
  padding: 28px;
  background: var(--surface);
}

.data-node + .data-node {
  border-left: 1px solid var(--line);
}

.data-node.optional {
  background: var(--accent);
  color: var(--accent-ink);
}

.data-node strong {
  display: block;
  margin-bottom: 8px;
}

.data-node p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.data-node.optional p {
  color: color-mix(in oklch, var(--accent-ink) 78%, transparent);
}

.faq {
  max-width: 860px;
  margin-inline: auto;
}

.faq h2 {
  margin-bottom: 42px;
  font-size: clamp(2.4rem, 4vw, 4rem);
}

.faq details {
  border-top: 1px solid var(--line);
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  padding: 22px 38px 22px 0;
  cursor: pointer;
  font-weight: 700;
}

.faq details p {
  max-width: 68ch;
  margin: -6px 0 24px;
  color: var(--muted);
}

.final-cta {
  background: var(--accent);
  color: var(--accent-ink);
}

.final-cta .shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 48px;
  align-items: center;
  padding-block: clamp(70px, 9vw, 110px);
}

.final-cta h2 {
  max-width: 15ch;
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.8rem);
}

.site-footer {
  padding-block: 32px;
  color: var(--muted);
  font-size: 13px;
}

.site-footer .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.document-hero {
  padding-block: 72px 54px;
  background: var(--accent);
  color: var(--accent-ink);
}

.document-hero p {
  max-width: 60ch;
  margin: 20px 0 0;
  font-size: 18px;
}

.document {
  width: min(820px, calc(100% - 40px));
  margin-inline: auto;
  padding-block: 64px 110px;
}

.document h2 {
  margin: 48px 0 14px;
  font-size: 1.55rem;
  letter-spacing: 0;
}

.document h3 {
  margin: 32px 0 10px;
  font-size: 1.15rem;
}

.document p,
.document li {
  max-width: 72ch;
  color: var(--muted);
}

.document strong {
  color: var(--ink);
}

.document a {
  color: var(--accent);
}

.document table {
  width: 100%;
  border-collapse: collapse;
  margin-block: 24px;
  font-size: 14px;
}

.document th,
.document td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.document th {
  color: var(--ink);
}

.callout {
  margin-block: 30px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.callout p {
  margin: 0;
}

@media (max-width: 880px) {
  .hero-grid,
  .section-heading,
  .boundary-grid,
  .final-cta .shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-grid {
    min-height: auto;
  }

  .product-shot {
    transform: none;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .step {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .step:last-child {
    border-bottom: 0;
  }

  .step span {
    margin-bottom: 30px;
  }

  .gallery,
  .gallery.two {
    grid-template-columns: 1fr;
  }

  .gallery figure:first-child {
    grid-row: auto;
  }

  .data-flow {
    display: block;
  }

  .data-node + .data-node {
    border-top: 1px solid var(--line);
    border-left: 0;
  }
}

@media (max-width: 640px) {
  .shell,
  .document {
    width: min(100% - 28px, var(--max));
  }

  .site-header .shell {
    min-height: 62px;
  }

  .brand span {
    display: none;
  }

  .nav {
    gap: 14px;
    font-size: 13px;
  }

  .nav a:first-child {
    display: none;
  }

  .hero-grid {
    min-height: min(660px, calc(100svh - 92px));
    padding-block: 58px 78px;
  }

  .hero-media {
    object-position: 72% center;
    opacity: 1;
  }

  .hero::after {
    position: absolute;
    inset: 0;
    z-index: 0;
    background: color-mix(in oklch, var(--accent) 84%, transparent);
    content: "";
    pointer-events: none;
  }

  .hero-copy {
    width: 100%;
  }

  h1 {
    font-size: clamp(2.75rem, 14vw, 4.2rem);
    overflow-wrap: anywhere;
    text-wrap: wrap;
  }

  .hero-copy > p,
  .hero-note {
    overflow-wrap: anywhere;
  }

  .trust-strip .shell,
  .site-footer .shell {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 20px;
  }

  .feature-row {
    grid-template-columns: 1fr 36px;
    gap: 14px;
  }

  .feature-row h3 {
    grid-column: 1 / -1;
  }

  .final-cta .button {
    width: 100%;
  }

  .document table {
    display: block;
    overflow-x: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}