:root {
  --u-bg: #f3f5f8;
  --u-bg-soft: #eef1f5;
  --u-surface: #ffffff;
  --u-primary-text: #202630;
  --u-muted-text: #707a8a;
  --u-soft-text: #929aa5;
  --u-line: #eaecef;
  --u-line-strong: #d9dde3;
  --u-accent: #202630;
  --u-accent-hover: #2b3441;
  --u-accent-press: #171d26;
  --u-accent-contrast: #ffffff;
  --u-secondary: #ffffff;
  --u-secondary-hover: #f8f9fb;
  --u-ok: #1f8f63;
  --u-warn: #a97400;
  --u-err: #b85050;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--u-primary-text);
  font-family: "Roboto", "Helvetica Neue", "Segoe UI", sans-serif;
  background:
    radial-gradient(920px 420px at -15% -10%, rgba(146, 154, 165, 0.18) 0%, transparent 62%),
    radial-gradient(760px 360px at 115% 0%, rgba(32, 38, 48, 0.08) 0%, transparent 55%),
    linear-gradient(160deg, var(--u-bg) 0%, var(--u-bg-soft) 100%);
}

.page {
  width: min(940px, calc(100% - 32px));
  margin: 28px auto 44px;
  display: grid;
  gap: 14px;
}

.card {
  border: 1px solid var(--u-line);
  border-radius: 14px;
  background: var(--u-surface);
  padding: 18px;
  box-shadow: 0 8px 28px rgba(32, 38, 48, 0.08);
}

.hero {
  position: relative;
  overflow: hidden;
}

.eyebrow {
  margin: 0;
  color: var(--u-soft-text);
  letter-spacing: 0.08em;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
}

h1 {
  margin: 8px 0 10px;
  font-size: 34px;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.desc {
  margin: 0;
  color: var(--u-muted-text);
  line-height: 1.65;
  max-width: 62ch;
}

.btn-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid transparent;
  border-radius: 10px;
  height: 42px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--u-accent-hover);
}

.btn-primary:active:not(:disabled) {
  background: var(--u-accent-press);
}

.btn-secondary {
  color: var(--u-primary-text);
  border-color: var(--u-line-strong);
  background: var(--u-secondary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--u-secondary-hover);
  border-color: #c9cfd8;
}

.status {
  margin: 12px 0 0;
  font-size: 14px;
}

.status.neutral {
  color: var(--u-muted-text);
}

.status.ok {
  color: var(--u-ok);
}

.status.warn {
  color: var(--u-warn);
}

.status.err {
  color: var(--u-err);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.item {
  border: 1px solid var(--u-line);
  border-radius: 10px;
  padding: 12px;
  background: #fbfcfd;
}

.item label,
.tx label {
  display: block;
  margin-bottom: 6px;
  color: var(--u-soft-text);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.item p,
.tx p {
  margin: 0;
  line-height: 1.45;
  word-break: break-word;
}

.hint h2 {
  margin: 0 0 8px;
  font-size: 16px;
}

.hint p {
  margin: 0;
  color: var(--u-muted-text);
}

code {
  color: #4f5b6c;
}

@media (max-width: 860px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  h1 {
    font-size: 28px;
  }

  .btn {
    width: 100%;
  }
}