:root {
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --color-primary: #5590a8;
  --color-secondary: #4682b4;
  --color-hover: #4c8aa1;
  --color-success: #1f9d62;
  --color-warning: #c77800;
  --color-danger: #d7322d;
  --color-info: #2f62cc;
  --color-bg: #f6f8fb;
  --color-surface: #ffffff;
  --color-surface-soft: #eef2f7;
  --color-surface-dark: #121212;
  --color-surface-darker: #161a1e;
  --color-surface-deep: #1c2127;
  --color-text: #1b2430;
  --color-text-secondary: #445065;
  --color-text-tertiary: #63718a;
  --color-text-inverse: #e9eef5;
  --color-line-soft: #d7dee8;
  --color-line-strong: #c2cbd8;
  --color-line-dark: #2a3038;
  --color-line-dark-strong: #3a414b;
  --shadow-soft: 0 18px 50px rgba(27, 36, 48, 0.08);
  --shadow-card: 0 26px 80px rgba(15, 23, 42, 0.08);
  --shadow-dark: 0 24px 60px rgba(0, 0, 0, 0.28);
  --radius-xs: 12px;
  --radius-sm: 18px;
  --radius-md: 24px;
  --radius-lg: 32px;
  --site-width: 1180px;
  --header-height: 84px;
  --transition: 220ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at top right, rgba(85, 144, 168, 0.12), transparent 32%),
    radial-gradient(circle at left 30%, rgba(70, 130, 180, 0.08), transparent 25%),
    linear-gradient(180deg, #fbfdff 0%, #f6f8fb 48%, #ffffff 100%);
  color: var(--color-text);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

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

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

button {
  font: inherit;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -64px;
  z-index: 200;
  padding: 12px 16px;
  background: var(--color-surface-dark);
  color: var(--color-text-inverse);
  border-radius: 14px;
}

.skip-link:focus {
  top: 16px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  backdrop-filter: blur(24px);
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid rgba(194, 203, 216, 0.55);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 40px rgba(15, 23, 42, 0.06);
}

.shell {
  width: min(calc(100% - 48px), var(--site-width));
  margin: 0 auto;
}

.header-shell,
.footer-grid,
.hero-grid,
.final-grid {
  display: grid;
  gap: 24px;
}

.header-shell {
  height: 100%;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}


.brand-mark img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  border-radius: inherit;
}

.brand-copy {
  min-width: 0;
}

.brand-copy strong {
  display: block;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-copy span {
  display: block;
  font-size: 0.78rem;
  color: var(--color-text-tertiary);
}

.main-nav {
  justify-self: center;
}

.main-nav ul,
.footer-links,
.trust-row,
.pillars-grid,
.problems-grid,
.steps-grid,
.use-cases-grid,
.security-grid {
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav ul {
  display: inline-flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 0.96rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 8px;
  height: 2px;
  border-radius: 999px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition);
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px;
  border: 1px solid rgba(194, 203, 216, 0.8);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
}

.language-switch a,
.language-switch span {
  min-width: 58px;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.language-switch .is-active {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 10px 24px rgba(85, 144, 168, 0.28);
}

.menu-toggle,
.to-top {
  display: none;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 14px;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
}

.menu-toggle {
  width: 46px;
  height: 46px;
}

.menu-toggle svg,
.to-top svg {
  width: 22px;
  height: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 22px;
  border-radius: 16px;
  border: 1px solid transparent;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    background var(--transition),
    border-color var(--transition),
    color var(--transition);
}

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

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  box-shadow: 0 18px 34px rgba(85, 144, 168, 0.3);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  box-shadow: 0 22px 44px rgba(85, 144, 168, 0.34);
}

.btn-secondary {
  color: var(--color-primary);
  border-color: rgba(85, 144, 168, 0.24);
  background: rgba(255, 255, 255, 0.78);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: rgba(85, 144, 168, 0.45);
  background: rgba(85, 144, 168, 0.05);
}

.btn-ghost {
  color: var(--color-text-inverse);
  border-color: rgba(233, 238, 245, 0.18);
  background: rgba(255, 255, 255, 0.08);
}

.icon-inline {
  width: 18px;
  height: 18px;
}

.hero {
  --hero-orb-top-shift: 0px;
  --hero-orb-bottom-shift: 0px;
  position: relative;
  min-height: calc(100vh - 16px);
  padding: clamp(102px, 14vw, 96px) 0 96px;
  overflow: clip;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  filter: blur(30px);
  opacity: 0.65;
  will-change: transform;
  transition: transform 120ms linear;
}

.hero::before {
  top: -120px;
  right: -140px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(85, 144, 168, 0.22) 0%, rgba(85, 144, 168, 0) 72%);
  transform: translate3d(0, var(--hero-orb-top-shift), 0);
}

.hero::after {
  bottom: -180px;
  left: -140px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(70, 130, 180, 0.17) 0%, rgba(70, 130, 180, 0) 70%);
  transform: translate3d(0, var(--hero-orb-bottom-shift), 0);
}

.hero-grid {
  grid-template-columns: 1.06fr 0.94fr;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(194, 203, 216, 0.85);
  box-shadow: var(--shadow-soft);
  color: var(--color-primary);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.eyebrow svg {
  width: 16px;
  height: 16px;
}

.hero-copy h1,
.section-heading h2,
.final-copy h2 {
  margin: 24px 0 0;
  font-weight: 600;
  letter-spacing: -0.05em;
  line-height: 0.96;
}

.hero-copy h1 {
  max-width: 12ch;
  font-size: clamp(3.65rem, 8vw, 7rem);
}

.hero-copy h1 span,
.final-copy h2 span {
  display: inline-block;
  color: var(--color-primary);
}

.lead {
  max-width: 66ch;
  margin: 30px 0 0;
  font-size: clamp(1.1rem, 1vw + 0.85rem, 1.45rem);
  color: var(--color-text-secondary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 42px;
}

.trust-row li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(215, 222, 232, 0.85);
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  box-shadow: 0 12px 28px rgba(27, 36, 48, 0.04);
}

.trust-row svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

.hero-panel {
  position: relative;
  align-self: stretch;
}

.hero-card,
.hero-glass,
.problems-grid li,
.pillar-card,
.use-case-card,
.security-card {
  border: 1px solid rgba(194, 203, 216, 0.56);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
}

.hero-card {
  position: relative;
  padding: 34px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: -30% 10% auto auto;
  width: 260px;
  height: 260px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(85, 144, 168, 0.16) 0%, rgba(85, 144, 168, 0) 70%);
}

.hero-card-top,
.hero-card-bottom,
.hero-card-list li,
.hero-summary li,
.step-card .meta,
.footer-bottom {
  display: flex;
  align-items: center;
}

.hero-card-top {
  justify-content: space-between;
  gap: 16px;
}

.pill-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(85, 144, 168, 0.18);
  background: rgba(85, 144, 168, 0.08);
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.kpi {
  text-align: right;
}

.kpi strong {
  display: block;
  font-size: 2rem;
  line-height: 1;
  letter-spacing: -0.04em;
}

.kpi span {
  color: var(--color-text-tertiary);
  font-size: 0.9rem;
}

.hero-card h2 {
  margin: 32px 0 10px;
  font-size: clamp(1.85rem, 3vw, 2.7rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.04;
}

.hero-card p,
.section-heading p,
.problem-copy p,
.pillar-copy p,
.security-card p,
.use-case-card p,
.step-card p,
.footer-copy p {
  margin: 0;
  color: var(--color-text-secondary);
}

.hero-card-list {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
}

.hero-card-list li {
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(246, 248, 251, 0.84);
  border: 1px solid rgba(215, 222, 232, 0.9);
}

.hero-card-list strong {
  display: block;
  font-size: 0.98rem;
}

.hero-card-list span {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 14px;
  background: rgba(85, 144, 168, 0.11);
  color: var(--color-primary);
  font-weight: 700;
}

.hero-summary {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.hero-summary li {
  gap: 12px;
  color: var(--color-text-secondary);
  font-size: 0.92rem;
}

.hero-summary svg {
  flex: none;
  width: 16px;
  height: 16px;
  color: var(--color-success);
}

.hero-glass {
  position: absolute;
  right: -4%;
  bottom: -36px;
  width: min(270px, 56%);
  padding: 22px 20px;
  border-radius: 26px;
  background:
    linear-gradient(180deg, rgba(12, 18, 28, 0.94) 0%, rgba(22, 26, 30, 0.96) 100%);
  color: var(--color-text-inverse);
  border-color: rgba(58, 65, 75, 0.9);
  box-shadow: var(--shadow-dark);
}

.hero-glass strong {
  display: block;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  color: #c1d9e4;
}

.hero-glass p {
  margin: 10px 0 16px;
  color: rgba(233, 238, 245, 0.74);
  font-size: 0.92rem;
}

.hero-glass .status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(31, 157, 98, 0.18);
  color: #7be2ad;
  font-size: 0.82rem;
  font-weight: 600;
}

.section {
  position: relative;
  padding: 108px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 56px;
}

.section-heading.is-centered {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-heading h2 {
  font-size: clamp(2.4rem, 4vw, 4.2rem);
}

.section-heading p {
  margin-top: 20px;
  font-size: clamp(1.05rem, 0.85vw + 0.8rem, 1.34rem);
}

.section-light {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.85) 0%, rgba(246, 248, 251, 0.72) 100%);
}

.section-dark {
  background:
    radial-gradient(circle at top left, rgba(85, 144, 168, 0.14) 0%, rgba(85, 144, 168, 0) 26%),
    linear-gradient(180deg, rgba(18, 18, 18, 0.98) 0%, rgba(22, 26, 30, 0.98) 100%);
  color: var(--color-text-inverse);
}

.section-dark .section-heading h2,
.section-dark .section-heading p {
  color: inherit;
}

.section-dark .section-heading p,
.section-dark .pillar-copy p,
.section-dark .footer-links a,
.section-dark .footer-copy p,
.section-dark .footer-meta,
.section-dark .footer-note {
  color: rgba(233, 238, 245, 0.7);
}

.problems-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.problems-grid li,
.pillar-card,
.use-case-card,
.security-card,
.step-card {
  border-radius: var(--radius-md);
}

.problems-grid li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
  padding: 28px;
}

.problem-icon,
.pillar-icon,
.security-icon,
.step-icon,
.use-case-icon {
  width: 54px;
  height: 54px;
  border-radius: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
}

.problem-icon,
.security-icon {
  background: rgba(85, 144, 168, 0.1);
  color: var(--color-primary);
}

.problem-icon svg,
.pillar-icon svg,
.security-icon svg,
.step-icon svg,
.use-case-icon svg {
  width: 24px;
  height: 24px;
}

.problem-copy h3,
.pillar-copy h3,
.security-card h3,
.step-card h3,
.use-case-card h3 {
  margin: 0 0 8px;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.problem-copy .kicker,
.pillar-copy .kicker,
.use-case-card .kicker,
.step-card .kicker {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(85, 144, 168, 0.08);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.pillars-grid,
.security-grid,
.use-cases-grid {
  display: grid;
  gap: 22px;
}

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

.pillar-card {
  padding: 26px;
  background: rgba(28, 33, 39, 0.76);
  border-color: rgba(58, 65, 75, 0.9);
  box-shadow: none;
}

.pillar-card:hover {
  background: rgba(34, 40, 48, 0.92);
  transform: translateY(-2px);
}

.pillar-icon {
  background: linear-gradient(135deg, rgba(85, 144, 168, 0.95), rgba(70, 130, 180, 0.95));
  color: #fff;
  box-shadow: 0 12px 28px rgba(85, 144, 168, 0.24);
}

.pillar-copy .kicker {
  margin-bottom: 14px;
  background: rgba(85, 144, 168, 0.12);
  color: #cfe4ed;
}

.pillar-copy h3 {
  color: #fff;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  counter-reset: steps;
}

.step-card {
  position: relative;
  padding: 28px 26px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(194, 203, 216, 0.6);
  box-shadow: var(--shadow-soft);
}

.step-card::before {
  counter-increment: steps;
  content: counter(steps, decimal-leading-zero);
  position: absolute;
  top: 18px;
  right: 22px;
  font-size: 3rem;
  line-height: 1;
  letter-spacing: -0.05em;
  color: rgba(85, 144, 168, 0.16);
  font-weight: 700;
}

.step-card .meta {
  gap: 12px;
  margin-bottom: 18px;
}

.step-icon {
  background: rgba(85, 144, 168, 0.12);
  color: var(--color-primary);
}

.steps-note {
  margin-top: 30px;
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: 0.95rem;
}

.security-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.security-card {
  padding: 28px;
}

.security-card h3 {
  margin-top: 18px;
}

.security-emphasis {
  margin-top: 30px;
  padding: 26px 28px;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(85, 144, 168, 0.1), rgba(85, 144, 168, 0.04));
  border: 1px solid rgba(85, 144, 168, 0.18);
  color: var(--color-text-secondary);
  font-size: 1.08rem;
}

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

.use-case-card {
  position: relative;
  overflow: hidden;
  padding: 30px;
}

.use-case-card::before {
  content: "";
  position: absolute;
  inset: auto -18% -30% auto;
  width: 240px;
  height: 240px;
  border-radius: 999px;
  opacity: 0.12;
  filter: blur(16px);
}

.use-case-card[data-accent="rose"]::before {
  background: radial-gradient(circle, rgba(255, 76, 120, 0.9) 0%, rgba(255, 76, 120, 0) 70%);
}

.use-case-card[data-accent="blue"]::before {
  background: radial-gradient(circle, rgba(47, 98, 204, 0.95) 0%, rgba(47, 98, 204, 0) 70%);
}

.use-case-card[data-accent="amber"]::before {
  background: radial-gradient(circle, rgba(199, 120, 0, 0.92) 0%, rgba(199, 120, 0, 0) 70%);
}

.use-case-card[data-accent="violet"]::before {
  background: radial-gradient(circle, rgba(133, 74, 209, 0.95) 0%, rgba(133, 74, 209, 0) 70%);
}

.use-case-icon[data-accent="rose"] {
  background: linear-gradient(135deg, #fb7185, #ec4899);
}

.use-case-icon[data-accent="blue"] {
  background: linear-gradient(135deg, #4682b4, #2f62cc);
}

.use-case-icon[data-accent="amber"] {
  background: linear-gradient(135deg, #f59e0b, #f97316);
}

.use-case-icon[data-accent="violet"] {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.use-case-icon {
  color: #fff;
  margin-bottom: 18px;
  box-shadow: 0 16px 26px rgba(15, 23, 42, 0.14);
}

.final-cta {
  overflow: clip;
}

.final-cta::before,
.final-cta::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 999px;
  opacity: 0.16;
  filter: blur(8px);
}

.final-cta::before {
  right: -100px;
  top: -90px;
  background: radial-gradient(circle, rgba(85, 144, 168, 0.9) 0%, rgba(85, 144, 168, 0) 72%);
}

.final-cta::after {
  left: -100px;
  bottom: -120px;
  background: radial-gradient(circle, rgba(70, 130, 180, 0.8) 0%, rgba(70, 130, 180, 0) 72%);
}

.final-grid {
  position: relative;
  grid-template-columns: minmax(0, 1fr);
  justify-items: center;
  text-align: center;
}

.final-copy {
  max-width: 760px;
}

.final-copy h2 {
  font-size: clamp(2.8rem, 4.8vw, 5.6rem);
  color: #fff;
}

.final-copy p {
  margin: 24px auto 0;
  max-width: 38ch;
  color: rgba(233, 238, 245, 0.8);
  font-size: clamp(1.05rem, 1vw + 0.8rem, 1.34rem);
}

.final-copy .eyebrow {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
  color: #d8eaf1;
}

.final-copy .hero-actions {
  justify-content: center;
}

.final-note {
  margin-top: 16px;
  color: rgba(233, 238, 245, 0.66);
  font-size: 0.92rem;
}

.site-footer {
  padding: 34px 0 48px;
  background: linear-gradient(180deg, #0d121b 0%, #0b1017 100%);
  color: var(--color-text-inverse);
}

.footer-grid {
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  align-items: start;
}

.footer-copy p {
  max-width: 46ch;
  margin-top: 18px;
}

.footer-links li + li {
  margin-top: 10px;
}

.footer-links a,
.footer-links span {
  color: rgba(233, 238, 245, 0.7);
  font-size: 0.95rem;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: #fff;
}

.footer-meta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  font-size: 0.92rem;
}

.footer-meta svg {
  width: 16px;
  height: 16px;
  color: #cfe4ed;
}

.footer-bottom {
  justify-content: space-between;
  gap: 18px;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid rgba(58, 65, 75, 0.95);
  color: rgba(233, 238, 245, 0.58);
  font-size: 0.88rem;
}

.footer-note {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
}

.to-top {
  display: inline-flex;
  position: fixed;
  right: clamp(18px, 3vw, 30px);
  bottom: clamp(18px, 3vw, 30px);
  width: 58px;
  height: 58px;
  z-index: 110;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(28, 33, 39, 0.94) 0%, rgba(12, 18, 28, 0.98) 100%);
  color: #fff;
  box-shadow:
    0 20px 42px rgba(7, 10, 15, 0.26),
    0 0 0 1px rgba(85, 144, 168, 0.1);
  backdrop-filter: blur(14px);
  opacity: 0;
  transform: translateY(18px) scale(0.92);
  pointer-events: none;
  transition:
    opacity var(--transition),
    transform var(--transition),
    background var(--transition),
    box-shadow var(--transition);
}

.to-top.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.to-top:hover,
.to-top:focus-visible {
  background:
    linear-gradient(180deg, rgba(36, 43, 51, 0.96) 0%, rgba(17, 23, 31, 0.98) 100%);
  box-shadow:
    0 24px 52px rgba(7, 10, 15, 0.32),
    0 0 0 1px rgba(85, 144, 168, 0.2);
}

.to-top svg {
  width: 24px;
  height: 24px;
}

.focus-ring:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

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

  .hero {
    --hero-orb-top-shift: 0px;
    --hero-orb-bottom-shift: 0px;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn,
  .site-header,
  .main-nav a::after,
  .hero::before,
  .hero::after,
  .to-top,
  .language-switch a,
  .language-switch span {
    transition: none;
  }
}

@media (max-width: 1100px) {
  .hero-grid,
  .footer-grid,
  .pillars-grid,
  .steps-grid,
  .security-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-grid {
    gap: 40px;
  }

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

  .footer-grid > :first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 76px;
  }

  .shell {
    width: min(calc(100% - 32px), var(--site-width));
  }

  .header-shell {
    grid-template-columns: auto 1fr auto;
  }

  .main-nav {
    position: fixed;
    inset: var(--header-height) 16px auto;
    justify-self: stretch;
    padding: 18px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid rgba(194, 203, 216, 0.85);
    box-shadow: var(--shadow-card);
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity var(--transition), transform var(--transition);
  }

  body.menu-open .main-nav {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .main-nav ul {
    display: grid;
    gap: 8px;
  }

  .main-nav a {
    min-height: 48px;
    padding: 0 12px;
    border-radius: 14px;
  }

  .main-nav a:hover,
  .main-nav a:focus-visible {
    background: rgba(85, 144, 168, 0.06);
  }

  .main-nav a::after {
    display: none;
  }

  .header-actions .btn-primary {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .hero {
    min-height: auto;
    padding-top: 108px;
  }

  .hero-grid,
  .problems-grid,
  .use-cases-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-glass {
    position: static;
    width: 100%;
    margin-top: 20px;
  }

  .section {
    padding: 84px 0;
  }

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

  .footer-note {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .hero-copy h1 {
    font-size: clamp(2.8rem, 13vw, 4.4rem);
  }

  .hero-card,
  .problem-card,
  .security-card,
  .pillar-card,
  .use-case-card,
  .step-card {
    padding-left: 22px;
    padding-right: 22px;
  }

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

  .btn,
  .language-switch a,
  .language-switch span {
    width: 100%;
  }

  .language-switch {
    width: 100%;
  }

  .hero-card-top {
    display: grid;
    gap: 14px;
  }

  .kpi {
    text-align: left;
  }

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