:root {
  --bg-1: #f6f8ff;
  --bg-2: #eef2ff;
  --surface: #ffffff;
  --ink: #061b31;
  --ink-soft: #273951;
  --text: #4b6078;
  --line: #dde6f2;
  --line-soft: #d6dbf8;
  --purple: #533afd;
  --purple-hover: #4434d4;
  --purple-deep: #2e2b8c;
  --success-bg: rgba(16, 140, 61, 0.08);
  --success-border: rgba(16, 140, 61, 0.28);
  --success-text: #108c3d;
  --shadow-core: rgba(50, 50, 93, 0.2);
  --shadow-dark: rgba(0, 0, 0, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  background:
    radial-gradient(900px 300px at 85% -6%, rgba(83, 58, 253, 0.16), transparent 60%),
    linear-gradient(180deg, #ffffff 0%, var(--bg-1) 52%, var(--bg-2) 100%);
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.nav-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: -0.2px;
  font-size: 18px;
  white-space: nowrap;
}

.top-links {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-left: 18px;
  flex: 1;
}

.top-links a {
  color: var(--ink-soft);
  font-size: 14px;
}

.top-links a:hover {
  color: var(--ink);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.lang-btn {
  border: 1px solid var(--line-soft);
  color: var(--text);
  background: #ffffff;
  border-radius: 6px;
  font-size: 12px;
  line-height: 1;
  min-height: 28px;
  padding: 6px 10px;
  cursor: pointer;
}

.lang-btn[aria-pressed='true'],
.lang-btn.active {
  border-color: var(--purple);
  color: var(--purple);
  box-shadow: inset 0 0 0 1px rgba(83, 58, 253, 0.14);
}

.page-shell {
  width: min(1120px, calc(100% - 40px));
  margin: 26px auto 0;
  display: grid;
  gap: 18px;
}

.hero {
  padding: 64px 0 56px;
  display: grid;
  gap: 22px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  width: 360px;
  height: 360px;
  right: -120px;
  top: -40px;
  border-radius: 999px;
  background: radial-gradient(circle at center, rgba(83, 58, 253, 0.2), rgba(83, 58, 253, 0) 70%);
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--purple);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}

.hero h1 {
  margin: 0 0 16px;
  color: var(--ink);
  font-weight: 320;
  font-size: clamp(2.1rem, 5vw, 3.9rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  max-width: 14ch;
}

.hero-subtitle {
  margin: 0;
  color: var(--text);
  max-width: 74ch;
  font-size: 18px;
  line-height: 1.62;
}

.hero-subtitle + .hero-subtitle {
  margin-top: 8px;
}

.hero-meta {
  margin: 20px 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  border: 1px solid transparent;
  min-height: 40px;
  padding: 10px 16px;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease, border-color 0.16s ease;
}

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

.btn-primary {
  color: #ffffff;
  background: var(--purple);
  border-color: var(--purple);
}

.btn-primary:hover {
  background: var(--purple-hover);
}

.btn-secondary {
  color: var(--purple);
  border-color: var(--line-soft);
  background: #fff;
}

.btn-secondary:hover {
  border-color: var(--purple);
  background: rgba(83, 58, 253, 0.05);
}

.btn-ghost {
  color: var(--ink-soft);
  border-color: var(--line-soft);
  background: #fff;
}

.btn-ghost:hover {
  border-color: var(--purple);
  color: var(--purple);
}

.hero-panel {
  display: grid;
  gap: 10px;
  align-content: start;
  max-width: 380px;
  padding: 8px;
}

.metric-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 14px;
  box-shadow: 0 10px 30px -24px var(--shadow-core);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.metric-item strong {
  color: var(--ink);
  font-size: 22px;
  letter-spacing: -0.3px;
  line-height: 1;
}

.metric-item span {
  color: var(--text);
  font-size: 13px;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.surface {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 28px;
  box-shadow: 0 24px 50px -38px var(--shadow-core);
}

.surface-large {
  min-height: 310px;
}

.surface-soft {
  background: #fbfdff;
}

section h2 {
  margin: 0 0 14px;
  color: var(--ink);
  font-size: clamp(1.45rem, 2.4vw, 1.95rem);
  line-height: 1.2;
  font-weight: 320;
  letter-spacing: -0.2px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}

.inline-link {
  color: var(--purple);
  font-size: 14px;
}

.plain-list,
.faq {
  margin: 0;
  padding: 0;
  list-style: none;
}

.plain-list li,
.section-block p,
.faq span {
  color: var(--text);
}

.plain-list li,
.faq li {
  margin: 0;
}

.plain-list li + li,
.faq li + li {
  margin-top: 12px;
}

.section-block p {
  margin: 0;
  line-height: 1.72;
}

.section-block p + p {
  margin-top: 10px;
}

.plain-list-inline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px 14px;
}

.plain-list-inline li {
  border: 1px dashed var(--line-soft);
  border-radius: 6px;
  padding: 10px 12px;
}

.step-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
}

.step-list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  align-items: start;
  padding: 14px 0;
}

.step-list li + li {
  border-top: 1px dashed var(--line);
}

.step-list li span {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: linear-gradient(135deg, var(--purple), var(--purple-deep));
  font-weight: 500;
}

.step-list h3 {
  margin: 0 0 6px;
  color: var(--ink);
  font-weight: 400;
  letter-spacing: -0.2px;
}

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

.download-grid {
  margin-top: 4px;
  display: grid;
  gap: 10px;
}

.download {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px 16px;
  background: #fff;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  justify-items: end;
  gap: 10px 16px;
}

.download:hover {
  border-color: #c4cbff;
  box-shadow: 0 12px 30px -24px var(--shadow-core);
}

.download > div:first-child {
  min-width: 0;
}

.download-title {
  display: block;
  color: var(--ink);
  font-weight: 400;
  font-size: 16px;
}

.download small {
  color: var(--text);
  font-size: 13px;
}

.download strong {
  color: var(--success-text);
  border: 1px solid var(--success-border);
  background: var(--success-bg);
  border-radius: 4px;
  padding: 0 6px;
  font-weight: 400;
  margin-left: 2px;
}

.download-size-label {
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 500;
  margin-right: 4px;
}

.size {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

.small-note {
  margin: 12px 0 0;
  color: var(--text);
  font-size: 13px;
}

.release-note {
  color: var(--ink-soft);
}

code {
  background: #f1f5ff;
  border: 1px solid #d8e0ff;
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 12px;
  font-family: Menlo, Monaco, Consolas, 'SFMono-Regular', monospace;
}

.faq li {
  border-top: 1px dashed var(--line);
  padding: 12px 0;
  display: grid;
  gap: 6px;
}

.faq li:first-child {
  border-top: none;
  padding-top: 0;
}

.faq strong {
  color: var(--ink);
  font-weight: 400;
}

.placeholder-warning {
  margin: 12px auto 0;
  max-width: 1120px;
  width: min(1120px, calc(100% - 40px));
  padding: 10px 14px;
  border: 1px solid #d7ddff;
  background: #fbfdff;
  color: #2a2f68;
  border-radius: 6px;
}

.footer {
  margin: 20px auto 0;
  padding: 0 0 28px;
  color: #6c7d93;
  font-size: 13px;
}

.footer .container {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.footer a {
  color: #4f46e5;
}

@media (min-width: 980px) {
  .hero {
    grid-template-columns: 1.2fr 0.95fr;
    align-items: start;
  }

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

  .surface {
    padding: 30px;
  }
}

@media (max-width: 980px) {
  .container,
  .page-shell {
    width: calc(100% - 24px);
  }

  .nav-inner {
    min-height: 62px;
    gap: 10px;
    flex-wrap: wrap;
  }

  .top-links {
    margin-left: 0;
    flex: none;
    flex-wrap: wrap;
    gap: 10px 16px;
  }

  .hero {
    padding: 44px 0 36px;
  }

  .hero h1 {
    font-size: 2rem;
    max-width: 18ch;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-panel {
    max-width: none;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .cta-row {
    flex-direction: column;
  }

  .cta-row .btn {
    width: 100%;
    justify-content: center;
  }

  .download {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .plain-list-inline {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero-panel {
    grid-template-columns: 1fr;
  }
}