:root {
  color-scheme: light;
  --paper: #f7fafc;
  --surface: #ffffff;
  --surface-muted: #eef4f8;
  --ink: #14202b;
  --muted: #546376;
  --line: #d8e3ea;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --green: #0f766e;
  --amber: #b45309;
  --shadow: 0 20px 60px rgba(20, 32, 43, 0.08);
  --container: 1120px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

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

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  transform: translateY(-150%);
  background: var(--ink);
  color: #ffffff;
  padding: 10px 14px;
  border-radius: var(--radius);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 250, 252, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

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

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
}

.brand img {
  width: 40px;
  height: 40px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  flex-wrap: wrap;
}

.site-nav a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: var(--radius);
  color: var(--muted);
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: var(--surface);
  color: var(--ink);
  outline: none;
}

.hero {
  position: relative;
  min-height: clamp(540px, 76svh, 760px);
  display: grid;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero::before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 42%;
  background:
    linear-gradient(to right, rgba(216, 227, 234, 0.95) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(216, 227, 234, 0.9) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.35;
  pointer-events: none;
}

.hero-mark {
  position: absolute;
  right: clamp(-120px, 5vw, 72px);
  bottom: clamp(20px, 8vw, 88px);
  width: clamp(260px, 44vw, 560px);
  opacity: 0.18;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding: 86px 0 72px;
}

.eyebrow,
.section-kicker,
.release-label {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 18px;
  font-size: clamp(4rem, 12vw, 8rem);
  line-height: 0.9;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 720px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(1.2rem, 2.4vw, 1.7rem);
  line-height: 1.35;
}

.hero-actions,
.final-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 11px 16px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  background: var(--blue);
  border-color: var(--blue);
  color: #ffffff;
}

.button.primary:hover,
.button.primary:focus-visible {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
  outline: none;
}

.button.secondary {
  background: var(--surface);
  color: var(--ink);
}

.button.secondary:hover,
.button.secondary:focus-visible {
  border-color: var(--ink);
  outline: none;
}

.button.wide {
  width: 100%;
}

.status-list {
  max-width: 900px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.status-list li {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.notice-band,
.contrast,
.final-band {
  background: var(--surface);
}

.notice-band {
  border-bottom: 1px solid var(--line);
}

.notice-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(260px, 1fr);
  gap: 32px;
  align-items: center;
  padding: 34px 0;
}

.notice-grid h2 {
  margin-bottom: 0;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.15;
}

.notice-grid p:last-child {
  margin: 0;
  color: var(--muted);
}

.section {
  padding: 88px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading.compact {
  margin-bottom: 0;
}

.section-heading h2,
.release-layout h2,
.final-layout h2 {
  margin-bottom: 14px;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.section-heading p,
.release-layout p,
.final-layout p {
  color: var(--muted);
}

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

.step-card,
.security-points article,
.workflow-list article,
.release-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.step-card {
  min-height: 210px;
  padding: 22px;
}

.step-number {
  display: block;
  margin-bottom: 38px;
  color: var(--amber);
  font-weight: 900;
}

.step-card h3,
.security-points h3,
.workflow-list h3 {
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.step-card p,
.security-points p,
.workflow-list p {
  margin-bottom: 0;
  color: var(--muted);
}

.workflow-layout,
.security-grid,
.release-layout,
.final-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  gap: 48px;
  align-items: start;
}

.workflow-list {
  display: grid;
  gap: 12px;
}

.workflow-list article {
  padding: 22px;
}

.security-points {
  grid-template-columns: 1fr;
}

.security-points article {
  padding: 24px;
}

.release-section {
  background: var(--surface-muted);
}

.release-panel {
  display: grid;
  gap: 22px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.release-panel ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.final-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.final-layout {
  align-items: center;
}

.final-actions {
  justify-content: flex-end;
}

.site-footer {
  background: var(--ink);
  color: #dce6ed;
}

.footer-inner {
  min-height: 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  color: #ffffff;
  font-weight: 800;
}

@media (max-width: 900px) {
  .notice-grid,
  .workflow-layout,
  .security-grid,
  .release-layout,
  .final-layout {
    grid-template-columns: 1fr;
  }

  .header-inner {
    min-height: auto;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 12px 0;
  }

  .site-nav {
    justify-content: flex-start;
  }

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

  .final-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 580px) {
  .header-inner,
  .container,
  .hero-inner {
    width: min(var(--container), calc(100% - 28px));
  }

  .hero {
    display: block;
    min-height: 548px;
  }

  .hero-mark {
    position: relative;
    right: auto;
    bottom: auto;
    width: 96px;
    margin: 22px auto -18px;
    opacity: 1;
    z-index: 1;
  }

  .hero-inner {
    padding: 34px 0 36px;
  }

  h1 {
    font-size: clamp(3rem, 18vw, 4.6rem);
  }

  .hero-lede {
    font-size: 1.05rem;
  }

  .site-nav {
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .site-nav a {
    min-height: 34px;
    flex: 0 0 auto;
    padding: 6px 10px;
    font-size: 0.86rem;
  }

  .brand img {
    width: 32px;
    height: 32px;
  }

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

  .button {
    width: 100%;
  }

  .status-list li {
    width: 100%;
  }

  .section {
    padding: 62px 0;
  }

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

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 360px) {
  .site-nav {
    flex-wrap: wrap;
    overflow-x: visible;
  }

  .site-nav a {
    flex: 1 1 calc(50% - 4px);
    justify-content: center;
    padding: 6px 8px;
    font-size: 0.76rem;
  }
}