:root {
  color-scheme: dark;
  --graphite: #1e2124;
  --graphite-elevated: #272b30;
  --graphite-input: #181b1f;
  --lime: #c6ff3d;
  --lime-dim: #a8db32;
  --off-white: #f4f4f0;
  --muted: #a8b0b8;
  --border: #3d434b;
  --border-subtle: #32373e;
  --danger: #ff9b9b;
  --success: #b8f06a;
  --radius: 14px;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  --font-body: "Montserrat", system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, Cantarell, "Noto Sans", sans-serif;
  --font-display: "Montserrat", var(--font-body);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: clip;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.58;
  color: var(--off-white);
  background-color: var(--graphite);
  background-image:
    linear-gradient(rgba(198, 255, 61, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(198, 255, 61, 0.035) 1px, transparent 1px);
  background-size: 28px 28px;
}

a {
  color: var(--lime);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--lime-dim);
}

.wrap {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

@media (min-width: 1440px) {
  .wrap {
    width: min(1120px, calc(100% - 3rem));
  }
}

.site-header {
  padding: 1rem 0;
  background: rgba(30, 33, 36, 0.92);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 3;
  backdrop-filter: blur(10px);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: inherit;
  line-height: 0;
}

.brand-logo {
  display: block;
  height: 40px;
  width: auto;
}

@media (min-width: 768px) {
  .brand-logo {
    height: 48px;
  }
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  background: var(--graphite-elevated);
}

.lang-switch a {
  border: 0;
  background: transparent;
  padding: 0.4rem 0.85rem;
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
}

.lang-switch a[aria-current="page"] {
  background: var(--lime);
  color: var(--graphite);
}

.lang-switch a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.hero {
  padding: 2.25rem 0 1rem;
}

.hero-top {
  max-width: 40rem;
  margin-bottom: 1.75rem;
}

.badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--graphite);
  background: var(--lime);
  padding: 0.38rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

h1 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.65rem, 4vw, 2.35rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.lead {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.status-line {
  margin: 0;
  color: var(--off-white);
  font-size: 0.95rem;
}

.status-line strong {
  font-weight: 700;
  color: var(--lime);
}

.cta-beta-link {
  display: inline-block;
  margin-top: 0.65rem;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--lime);
}

.cta-beta-link:hover {
  color: var(--lime-dim);
}

.feature-grid {
  display: grid;
  gap: 1rem;
  margin: 2rem 0 2.25rem;
}

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1080px) {
  .page-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 22.5rem);
    gap: 1.5rem;
    align-items: start;
  }
}

.page-grid > * {
  min-width: 0;
  max-width: 100%;
}

.feature-card {
  background: var(--graphite-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem 1.2rem;
  box-shadow: var(--shadow);
}

.feature-card h2 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  line-height: 1.3;
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
}

.feature-card h2::before {
  content: "";
  flex-shrink: 0;
  width: 0.85rem;
  height: 0.85rem;
  margin-top: 0.2rem;
  background: center / contain no-repeat url("assets/asterisk-lime.svg");
}

.feature-card h2 .t.ru::first-letter,
.feature-card h2 .t.en::first-letter,
.privacy h2 .t.ru::first-letter,
.privacy h2 .t.en::first-letter,
.form-title .t.ru::first-letter,
.form-title .t.en::first-letter {
  color: var(--lime);
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.card {
  background: var(--graphite-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.35rem 1.25rem;
}

.card-sticky {
  position: sticky;
  top: 5rem;
}

.form-title {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
}

.form-note {
  margin: 0 0 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.field {
  margin-bottom: 0.9rem;
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 0.3rem;
  color: var(--off-white);
}

.req::after {
  content: " *";
  color: var(--lime);
}

#beta-form input:not([type="checkbox"]),
#beta-form select,
#beta-form textarea,
input:not([type="checkbox"]),
select,
textarea {
  width: 100%;
  font: inherit;
  color: var(--off-white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.62rem 0.72rem;
  background: var(--graphite-input);
  scroll-margin-top: 6.5rem;
}

input::placeholder,
textarea::placeholder {
  color: #7a828a;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 1px;
  border-color: var(--lime);
}

input:user-invalid,
select:user-invalid,
textarea:user-invalid {
  border-color: var(--danger);
}

textarea {
  min-height: 4.5rem;
  resize: vertical;
}

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

.hp label,
.hp input {
  display: block;
}

.consent label {
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--muted);
  max-width: 100%;
}

.consent .consent-text {
  flex: 1;
  min-width: 0;
  line-height: 1.45;
}

.consent .consent-text a {
  color: var(--lime);
}

.consent-details {
  margin-top: 0.45rem;
  margin-left: 1.65rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.consent-details summary {
  cursor: pointer;
  color: var(--lime);
  list-style: none;
}

.consent-details summary::-webkit-details-marker {
  display: none;
}

.consent-details__body {
  margin: 0.45rem 0 0;
  line-height: 1.45;
}

.consent-details__body a {
  color: var(--lime);
}

.consent-check {
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
}

#beta-form .consent input[type="checkbox"] {
  width: auto;
  min-width: 1.125rem;
  height: 1.125rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
  padding: 0;
  border: none;
  border-radius: 4px;
  background: var(--graphite-input);
  accent-color: var(--lime);
  scroll-margin-top: 6.5rem;
}

.btn-secondary {
  background: transparent;
  color: var(--off-white);
  border: 1px solid var(--border);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 10px;
  padding: 0.72rem 1.1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9375rem;
  cursor: pointer;
  background: var(--lime);
  color: var(--graphite);
  width: 100%;
}

.btn:hover {
  background: var(--lime-dim);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.form-msg {
  margin-top: 0.85rem;
  font-size: 0.9rem;
  min-height: 1.35em;
}

.form-msg.ok {
  color: var(--success);
}

.form-msg.err {
  color: var(--danger);
}

.privacy {
  margin: 2.5rem 0 2rem;
}

.privacy h2 {
  margin-top: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
}

.privacy-sub {
  margin: 1.25rem 0 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
}

.privacy p {
  color: var(--muted);
  font-size: 0.92rem;
}

.privacy a {
  color: var(--lime);
}

.site-footer {
  padding: 1.25rem 0 2rem;
  color: var(--muted);
  font-size: 0.8125rem;
  border-top: 1px solid var(--border-subtle);
  background: rgba(24, 27, 31, 0.85);
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1rem;
}

.footer-link-btn {
  border: 0;
  background: none;
  color: var(--lime);
  font: inherit;
  font-size: 0.8125rem;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.15em;
  padding: 0;
}

.cookie-banner {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: 5;
  background: rgba(30, 33, 36, 0.97);
  border-top: 1px solid var(--border-subtle);
  padding: 1rem 0 1.1rem;
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.35);
}

.cookie-banner--hidden,
.cookie-banner[hidden] {
  display: none;
}

.cookie-banner__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.cookie-banner__text {
  margin: 0;
  flex: 1 1 16rem;
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 42rem;
}

.cookie-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  flex: 0 0 auto;
}

.cookie-banner__btn {
  width: auto;
  min-width: 8.5rem;
}

body:not(.cookie-banner--hidden) main {
  padding-bottom: 5.5rem;
}

.faq-section {
  margin-top: 1.5rem;
}

.faq-section h2 {
  margin-top: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.faq-item {
  border-top: 1px solid var(--border);
  padding: 0.65rem 0;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-q {
  display: inline;
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
}

.faq-a {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.page-404 {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* i18n */
.t.en {
  display: none;
}

html[lang="en"] .t.ru {
  display: none !important;
}

html[lang="en"] .t.en {
  display: block;
}

.badge .t.ru,
.badge .t.en,
.btn .t.ru,
.btn .t.en,
h1 .t.ru,
h1 .t.en,
.form-title .t.ru,
.form-title .t.en {
  display: inline;
}

html[lang="en"] .badge .t.ru,
html[lang="en"] .btn .t.ru,
html[lang="en"] h1 .t.ru,
html[lang="en"] .form-title .t.ru {
  display: none !important;
}

html[lang="en"] .badge .t.en,
html[lang="en"] .btn .t.en,
html[lang="en"] h1 .t.en,
html[lang="en"] .form-title .t.en {
  display: inline !important;
}

html[lang="ru"] .badge .t.en,
html[lang="ru"] .btn .t.en,
html[lang="ru"] h1 .t.en,
html[lang="ru"] .form-title .t.en {
  display: none !important;
}

.consent .t.en,
.consent .t.ru,
label .t.en,
label .t.ru {
  display: inline;
}

html[lang="en"] .consent .t.ru,
html[lang="en"] label .t.ru,
html[lang="ru"] .consent .t.en,
html[lang="ru"] label .t.en {
  display: none !important;
}

html[lang="en"] .consent .t.en,
html[lang="en"] label .t.en {
  display: inline !important;
}

html[lang="en"] option.t.ru {
  display: none;
}

html[lang="en"] option.t.en {
  display: block;
}