/* ── Design Tokens ── */
:root {
  /* Colors */
  --color-surface:      #f8f9fa;
  --color-card:         #ffffff;
  --color-bone:         #eef0f2;
  --color-ink:          #0e1116;
  --color-ink-60:       #5b6370;
  --color-accent:       #EB8E17;
  --color-accent-soft:  rgba(235, 142, 23, 0.10);

  --color-hairline:     rgba(14, 17, 22, 0.08);

  /* Typography */
  --font-sans: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Radius */
  --radius-sm:   3px;
  --radius-md:   5px;
  --radius-lg:   7px;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-card:   rgba(14, 17, 22, 0.04) 0 1px 2px;
  --shadow-level2: 0 8px 24px -12px rgba(15, 23, 42, 0.12);
  --shadow-level3: 0 16px 40px -16px rgba(15, 23, 42, 0.18);

  /* Motion */
  --transition: 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ── Base Reset ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background: var(--color-surface);
  color: var(--color-ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

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

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

/* ── Buttons ── */
.btn-primary {
  background: var(--color-accent);
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  padding: 9px 18px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  display: inline-block;
  transition: background var(--transition);
  white-space: nowrap;
}

.btn-primary:hover {
  background: #d47d10;
}

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-card);
  border-bottom: 1px solid var(--color-hairline);
  padding: 0 40px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-size: 19px;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 24px;
}

/* ── Shared Typography ── */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 14px;
}

/* ── Hero ── */
.hero {
  padding: 80px 40px;
  background: var(--color-surface);
}

.hero__inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 64px;
}

.hero__text {
  flex: 1;
  min-width: 0;
}

.hero__screenshot {
  flex: 1.3;
  min-width: 0;
}

.hero__img {
  width: 100%;
}

.hero__headline {
  font-size: 3rem;
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--color-ink);
  margin-bottom: 20px;
}

.hero__subline {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-ink-60);
  margin-bottom: 32px;
}

.hero__cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.version-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-ink-60);
  letter-spacing: 0.02em;
}

.hero__callouts {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-ink-60);
  letter-spacing: 0.04em;
  margin-top: 20px;
}

/* ── Feature Rows ── */
.features {
  background: var(--color-surface);
}

.feature-row {
  border-top: 1px solid var(--color-hairline);
}

.feature-row:nth-child(even) {
  background: var(--color-card);
}

.feature-row__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 40px;
  display: flex;
  gap: 72px;
  align-items: center;
}

.feature-row--reverse .feature-row__inner {
  flex-direction: row-reverse;
}

.feature-row__text {
  flex: 1;
  min-width: 0;
}

.feature-row__image {
  flex: 1.1;
  min-width: 0;
}

.feature-row__headline {
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--color-ink);
  margin-bottom: 14px;
}

.feature-row__body {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-ink-60);
  margin-bottom: 20px;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.feature-list li {
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-ink-60);
  padding-left: 18px;
  position: relative;
}

.feature-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
}

.feature-img {
  width: 100%;
}

/* ── Requirements ── */
.requirements {
  background: var(--color-bone);
  padding: 64px 40px;
  border-top: 1px solid var(--color-hairline);
}

.requirements__inner {
  max-width: 720px;
  margin: 0 auto;
}

.requirements__heading {
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.012em;
  color: var(--color-ink);
  margin-bottom: 32px;
}

.requirements__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px 48px;
}

.requirement-item__title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.requirement-item__note {
  font-size: 13px;
  color: var(--color-ink-60);
  line-height: 1.5;
}

/* ── Getting Started ── */
.getting-started {
  padding: 80px 40px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-hairline);
}

.getting-started__inner {
  max-width: 680px;
  margin: 0 auto;
}

.getting-started__heading {
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.012em;
  color: var(--color-ink);
  margin-bottom: 36px;
}

.steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 32px;
}

.step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.step__number {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-accent);
  min-width: 24px;
  padding-top: 3px;
  letter-spacing: 0.04em;
}

.step__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.step__body {
  font-size: 14px;
  color: var(--color-ink-60);
  line-height: 1.55;
}

.step__body code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: rgba(14, 17, 22, 0.06);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
}

.gatekeeper-note {
  padding: 16px 20px;
  background: var(--color-bone);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-hairline);
  font-size: 13px;
  color: var(--color-ink-60);
  line-height: 1.6;
}

.gatekeeper-note strong {
  color: var(--color-ink);
  font-weight: 600;
}

/* ── Closing CTA ── */
.closing-cta {
  padding: 80px 40px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-hairline);
  text-align: center;
}

.closing-cta__headline {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin-bottom: 28px;
}

.closing-cta__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* ── Footer ── */
.footer {
  padding: 32px 40px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-hairline);
}

.footer__inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px 64px;
  align-items: start;
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer__disclaimer a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: rgba(91, 99, 112, 0.4);
  text-underline-offset: 2px;
  transition: text-decoration-color var(--transition);
}

.footer__disclaimer a:hover {
  text-decoration-color: var(--color-ink-60);
}

.footer__logo {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink-60);
}

.footer__tagline {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-ink-60);
  letter-spacing: 0.02em;
}

.footer__disclaimer {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-ink-60);
  max-width: 560px;
  line-height: 1.6;
  margin-top: 6px;
}

/* ── Changelog ── */
.changelog-header {
  padding: 64px 40px 48px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-hairline);
}

.changelog-header__inner {
  max-width: 720px;
  margin: 0 auto;
}

.changelog-header__title {
  font-size: 2.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin-bottom: 10px;
}

.changelog-header__sub {
  font-size: 15px;
  color: var(--color-ink-60);
  line-height: 1.6;
}

.releases {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 40px;
}

.release {
  border-bottom: 1px solid var(--color-hairline);
}

.release__inner {
  padding: 56px 0;
}

.release__header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 36px;
}

.release__version {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: -0.01em;
}

.release__date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-ink-60);
  letter-spacing: 0.02em;
}

.release__section {
  margin-bottom: 32px;
}

.release__section:last-child {
  margin-bottom: 0;
}

.release__section-title {
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink);
  margin-bottom: 20px;
}

.release__feature {
  margin-bottom: 20px;
}

.release__feature:last-child {
  margin-bottom: 0;
}

.release__feature-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 5px;
}

.release__body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-ink-60);
}

.release__body code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: rgba(14, 17, 22, 0.06);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
}

.release__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.release__list li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-ink-60);
  padding-left: 18px;
  position: relative;
}

.release__list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
}

.release__list li code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: rgba(14, 17, 22, 0.06);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
}

/* ── License ── */
.license-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 40px;
}

.license-body__inner {
  padding: 56px 0;
}

.license-intro {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--color-hairline);
  margin-bottom: 0;
}

.license-intro__p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-ink-60);
}

.license-section {
  padding: 40px 0;
  border-bottom: 1px solid var(--color-hairline);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.license-section__title {
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink);
}

.license-section__body {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-ink-60);
}

.license-section__body--legal {
  font-size: 13px;
}

.license-section__body a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: rgba(91, 99, 112, 0.4);
  text-underline-offset: 2px;
  transition: text-decoration-color var(--transition);
}

.license-section__body a:hover {
  text-decoration-color: var(--color-ink-60);
}

.license-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.license-list li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-ink-60);
  padding-left: 18px;
  position: relative;
}

.license-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ── Content Links ── */
.content-link {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: rgba(91, 99, 112, 0.4);
  text-underline-offset: 2px;
  transition: text-decoration-color var(--transition);
}

.content-link:hover {
  text-decoration-color: var(--color-ink-60);
}

/* ── Nav link (changelog) ── */
.nav__link {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-ink-60);
  transition: color var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-ink);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  /* Nav */
  .nav {
    padding: 0 20px;
  }

  /* Hero */
  .hero {
    padding: 48px 20px;
  }

  .hero__inner {
    flex-direction: column;
  }

  .hero__screenshot {
    order: 2;
  }

  .hero__text {
    order: 1;
  }

  .hero__headline {
    font-size: 2rem;
  }

  /* Feature rows — stack vertically, image always below text */
  .feature-row__inner {
    flex-direction: column !important;
    padding: 48px 20px;
    gap: 28px;
  }

  .feature-row__image {
    order: 2;
  }

  .feature-row__text {
    order: 1;
  }

  /* Requirements — single column */
  .requirements {
    padding: 48px 20px;
  }

  .requirements__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* Getting Started */
  .getting-started {
    padding: 48px 20px;
  }

  /* Closing CTA */
  .closing-cta {
    padding: 60px 20px;
  }

  .closing-cta__headline {
    font-size: 1.5rem;
  }

  /* Footer */
  .footer {
    padding: 28px 20px;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}