*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-family: var(--cios-font-sans);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  background:
    radial-gradient(
      circle at 10% -10%,
      rgb(79 209 197 / 0.16),
      transparent 42%
    ),
    radial-gradient(circle at 90% 12%, rgb(34 198 184 / 0.16), transparent 34%),
    linear-gradient(
      180deg,
      var(--cios-color-bg-soft) 0%,
      var(--cios-color-bg) 100%
    );
  color: var(--cios-color-text);
  padding-bottom: calc(
    var(--cios-nav-height) + env(safe-area-inset-bottom, 0px)
  );
}

a {
  color: var(--cios-color-accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.15em;
}

a:hover {
  text-decoration: none;
}

.cios-skip {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.cios-skip:focus {
  position: fixed;
  left: var(--cios-space-4);
  top: var(--cios-space-4);
  z-index: 120;
  width: auto;
  height: auto;
  padding: var(--cios-space-2) var(--cios-space-4);
  background: var(--cios-color-accent);
  color: var(--cios-color-accent-contrast);
  border-radius: var(--cios-radius-sm);
}

.cios-app {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

.cios-header {
  position: sticky;
  top: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--cios-space-4);
  min-height: var(--cios-header-height);
  padding: var(--cios-space-3)
    max(var(--cios-space-4), env(safe-area-inset-left)) var(--cios-space-3)
    max(var(--cios-space-4), env(safe-area-inset-right));
  padding-top: max(var(--cios-space-3), env(safe-area-inset-top));
  border-bottom: 1px solid var(--cios-color-border);
  background: color-mix(in srgb, var(--cios-color-bg-soft) 86%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.cios-brand {
  display: flex;
  flex-direction: column;
  gap: var(--cios-space-1);
}

.cios-brand strong {
  font-family: var(--cios-font-display);
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.cios-brand span {
  font-size: 0.8rem;
  color: var(--cios-color-muted);
}

.cios-header-right {
  display: flex;
  align-items: center;
  gap: var(--cios-space-2);
}

.cios-pill,
.cios-version {
  display: inline-flex;
  align-items: center;
  gap: var(--cios-space-1);
  border: 1px solid var(--cios-color-border);
  border-radius: 999px;
  padding: 0.35rem 0.65rem;
  font-size: 0.72rem;
  color: var(--cios-color-muted);
  background: var(--cios-color-surface-soft);
}

.cios-main {
  width: 100%;
  max-width: var(--cios-max-width);
  margin: 0 auto;
  padding: var(--cios-space-8)
    max(var(--cios-space-4), env(safe-area-inset-left)) var(--cios-space-10)
    max(var(--cios-space-4), env(safe-area-inset-right));
}

.cios-hero {
  display: grid;
  gap: var(--cios-space-6);
  padding: var(--cios-space-8);
  border: 1px solid var(--cios-color-border);
  border-radius: var(--cios-radius-lg);
  box-shadow: var(--cios-shadow-glow);
  background:
    linear-gradient(155deg, rgb(79 209 197 / 0.08), transparent 45%),
    linear-gradient(345deg, rgb(34 198 184 / 0.08), transparent 35%),
    var(--cios-color-surface);
  animation: fade-up 420ms ease-out both;
}

@media (min-width: 980px) {
  .cios-hero {
    grid-template-columns: 1.12fr 0.88fr;
    align-items: stretch;
  }
}

.cios-eyebrow {
  margin: 0 0 var(--cios-space-3);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--cios-color-accent);
  font-weight: 700;
}

.cios-hero h1 {
  margin: 0 0 var(--cios-space-4);
  font-family: var(--cios-font-display);
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.cios-hero p {
  margin: 0;
  color: var(--cios-color-muted);
  max-width: 40rem;
}

.cios-hero-en,
.cios-one-line {
  margin-top: var(--cios-space-3);
}

.cios-one-line {
  color: color-mix(
    in srgb,
    var(--cios-color-accent) 68%,
    var(--cios-color-text)
  );
  font-weight: 700;
}

.cios-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cios-space-2);
  margin-top: var(--cios-space-5);
}

.cios-btn {
  min-height: var(--cios-touch-min);
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 0.62rem 1rem;
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
}

.cios-btn-primary {
  background: var(--cios-color-accent);
  color: var(--cios-color-accent-contrast);
}

.cios-btn-secondary {
  border-color: var(--cios-color-border);
  background: var(--cios-color-surface-soft);
  color: var(--cios-color-text);
}

.cios-btn-ghost {
  border-color: color-mix(
    in srgb,
    var(--cios-color-accent) 40%,
    var(--cios-color-border)
  );
  color: var(--cios-color-accent);
  background: transparent;
}

.cios-hero-panel {
  display: grid;
  gap: var(--cios-space-3);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.cios-panel-card {
  border: 1px solid var(--cios-color-border);
  border-radius: var(--cios-radius-md);
  padding: var(--cios-space-4);
  background: color-mix(
    in srgb,
    var(--cios-color-surface-soft) 90%,
    transparent
  );
  box-shadow: var(--cios-shadow-sm);
}

.cios-panel-card h2 {
  margin: 0 0 var(--cios-space-2);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--cios-color-muted);
}

.cios-panel-card p {
  margin: 0;
  font-size: 0.86rem;
}

.cios-panel-meta {
  margin-top: var(--cios-space-2) !important;
  color: var(--cios-color-muted);
}

.cios-strip,
.cios-section,
.cios-final {
  margin-top: var(--cios-space-8);
  border: 1px solid var(--cios-color-border);
  border-radius: var(--cios-radius-md);
  padding: var(--cios-space-6);
  background: var(--cios-color-surface);
  box-shadow: var(--cios-shadow-sm);
}

.cios-strip h2,
.cios-section h2,
.cios-final h2 {
  margin-top: 0;
  font-family: var(--cios-font-display);
}

.cios-strip p,
.cios-section p {
  color: var(--cios-color-muted);
}

.cios-inline-link {
  display: inline-flex;
  margin-top: var(--cios-space-2);
  font-weight: 700;
}

.cios-grid {
  display: grid;
  gap: var(--cios-space-4);
}

.cios-grid-3 {
  grid-template-columns: 1fr;
}

.cios-grid-4 {
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .cios-grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cios-grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .cios-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .cios-grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.cios-card {
  border: 1px solid var(--cios-color-border);
  border-radius: var(--cios-radius-md);
  padding: var(--cios-space-4);
  background:
    linear-gradient(165deg, rgb(79 209 197 / 0.05), transparent 65%),
    var(--cios-color-surface-soft);
  opacity: 0;
  transform: translateY(8px);
  animation: card-in 360ms ease-out forwards;
}

.cios-card h3 {
  margin-top: 0;
  margin-bottom: var(--cios-space-2);
  font-family: var(--cios-font-display);
  font-size: 1rem;
}

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

.cios-number-grid {
  list-style: decimal;
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: var(--cios-space-3);
}

@media (min-width: 900px) {
  .cios-number-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    list-style: none;
    padding-left: 0;
  }

  .cios-number-card {
    position: relative;
    padding-left: var(--cios-space-5);
  }

  .cios-number-card::before {
    content: counter(item);
    counter-increment: item;
    position: absolute;
    left: 0;
    top: 0;
    color: var(--cios-color-accent);
    font-weight: 800;
  }

  .cios-number-grid {
    counter-reset: item;
  }
}

.cios-number-card {
  border: 1px solid var(--cios-color-border);
  border-radius: var(--cios-radius-sm);
  padding: var(--cios-space-3);
  background: var(--cios-color-surface-soft);
}

.cios-number-card h3 {
  margin: 0 0 var(--cios-space-2);
  font-size: 0.93rem;
}

.cios-number-card p {
  margin: 0;
  color: var(--cios-color-accent);
  font-weight: 700;
  font-size: 0.8rem;
}

.cios-highlight {
  margin-top: var(--cios-space-4);
  padding: var(--cios-space-5);
  border: 1px solid
    color-mix(in srgb, var(--cios-color-accent) 35%, var(--cios-color-border));
  border-radius: var(--cios-radius-md);
  background:
    linear-gradient(160deg, rgb(79 209 197 / 0.08), transparent 55%),
    var(--cios-color-surface-soft);
}

.cios-highlight h3 {
  margin-top: 0;
  margin-bottom: var(--cios-space-2);
}

.cios-flow-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--cios-space-2);
}

@media (min-width: 860px) {
  .cios-flow-strip {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.cios-flow-strip span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.3rem;
  border: 1px solid var(--cios-color-border);
  border-radius: 999px;
  background: var(--cios-color-surface-soft);
  font-size: 0.8rem;
  font-weight: 700;
}

.cios-flow-line {
  margin-top: var(--cios-space-3);
  font-family: var(--cios-font-mono);
  font-size: 0.82rem;
  color: var(--cios-color-muted);
}

.cios-final h2 {
  max-width: 56rem;
  margin-bottom: var(--cios-space-4);
}

.cios-footer {
  margin-top: var(--cios-space-10);
  padding-top: var(--cios-space-6);
  border-top: 1px solid var(--cios-color-border);
  color: var(--cios-color-muted);
  font-size: 0.86rem;
}

.cios-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  display: flex;
  align-items: stretch;
  justify-content: space-around;
  min-height: var(--cios-nav-height);
  padding: var(--cios-space-2)
    max(var(--cios-space-2), env(safe-area-inset-left))
    max(var(--cios-space-2), env(safe-area-inset-bottom))
    max(var(--cios-space-2), env(safe-area-inset-right));
  border-top: 1px solid var(--cios-color-border);
  background: color-mix(in srgb, var(--cios-color-bg-soft) 88%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.cios-nav a {
  flex: 1;
  min-height: var(--cios-touch-min);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.15rem;
  border-radius: var(--cios-radius-sm);
  text-decoration: none;
  color: var(--cios-color-muted);
  font-size: 0.7rem;
  font-weight: 700;
}

.cios-nav a[aria-current="page"] {
  color: var(--cios-color-accent);
  background: color-mix(in srgb, var(--cios-color-accent) 16%, transparent);
}

.cios-nav-icon {
  font-size: 1.1rem;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}