/* Hallmark · pre-emit critique: P4 H4 E4 S5 R5 V5
 * Hallmark · genre: modern-minimal · macrostructure: Marquee Hero · theme: Porcelain / Cobalt · enrichment: shared Gzhel details
 * contrast: pass (40–41) · nav: N5 · footer: Ft2 · slop: pass (42–45) · honest: pass (46)
 * chrome: pass (47) · tokens: pass (48) · responsive: pass (49) · icons: pass (30)
 * mobile: pass (34, 49, 50–57) — проверено скриншотами на 320/375/414/768/1280/1440
 * motion: hero reveal · CTA hover lift · FAQ marker rotate
 * · enrichment: none
 * nav: N5 Floating pill · footer: Ft2 Inline single line
 * H1 knobs: size=xxl, alignment=left-bias, underlay=rule-below
 * F4 knobs: numbering=01/02/03, layout=horizontal-flow→stack, connector=segmented-rule
 * F3 knobs: cols=3(key/value/note), rules=every-row, numbers=tabular
 * N5 knobs: width=content-sized, backdrop=blur+saturate, anchor=top-centre
 * Ft2 knobs: order=wordmark-links-credit, separator=middot, density=spaced
 * Copy: ru · цитаты «ёлочки», тире —, буквы Onest/JetBrains Mono/Prata */

/* ————— база ————— */

html {
  overflow-x: clip;
  scroll-padding-block-start: calc(var(--space-2xl) + var(--space-md));
}
body { overflow-x: clip; }

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

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.6;
  font-variant-numeric: oldstyle-nums;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--color-ink);
  font-weight: 700;
  overflow-wrap: anywhere;
  min-width: 0;
}

p { margin: 0; }

a { color: inherit; }

::selection { background: var(--color-ink); color: var(--color-paper); }

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

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

.skip-link {
  position: fixed;
  inset-block-start: var(--space-sm);
  inset-inline-start: var(--space-sm);
  z-index: var(--z-overlay);
  padding: var(--space-xs) var(--space-md);
  background: var(--color-ink);
  color: var(--color-paper);
  border-radius: var(--radius-control);
  text-decoration: none;
  transform: translateY(-200%);
}
.skip-link:focus-visible { transform: none; }

/* ————— навигация · N5 floating pill ————— */

.nav-pill {
  position: fixed;
  inset-block-start: var(--space-md);
  inset-inline-start: 50%;
  transform: translateX(-50%);
  z-index: var(--z-sticky);
  display: inline-flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-2xs) var(--space-2xs) var(--space-2xs) var(--space-md);
  background: color-mix(in oklch, var(--color-paper) 78%, transparent);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-chip);
  box-shadow: var(--shadow-pill);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-wordmark);
  font-weight: 400;
  font-size: var(--text-md);
  letter-spacing: 0.01em;
  color: var(--color-ink);
  text-decoration: none;
  white-space: nowrap;
}

.wordmark::before {
  content: "";
  display: block;
  flex: none;
  width: var(--space-lg);
  height: var(--space-lg);
  background: url("assets/brand/samovar-mark.svg?v=1") center / contain no-repeat;
}

.nav-pill__links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-pill__links a {
  display: inline-block;
  padding: var(--space-xs) var(--space-2xs);
  font-size: var(--text-sm);
  color: var(--color-muted);
  text-decoration: none;
  white-space: nowrap;
}

@media (hover: hover) and (pointer: fine) {
  .nav-pill__links a:hover {
    color: var(--color-ink);
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
    text-decoration-thickness: 1.5px;
    text-underline-offset: 6px;
  }
}

/* ————— кнопки ————— */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  min-height: 44px;
  padding: var(--space-sm) var(--space-lg);
  border: 0;
  border-radius: var(--radius-chip);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--dur-short) var(--ease-out),
              transform var(--dur-short) var(--ease-out);
}

.btn--primary { background: var(--color-accent-ink); color: var(--color-paper); }

@media (hover: hover) and (pointer: fine) {
  .btn--primary:hover { background: var(--color-accent-hover); transform: translateY(-1.5px); }
}

.btn--primary:active { transform: translateY(0); transition-duration: 60ms; }

.btn--nav { min-height: 40px; padding: var(--space-xs) var(--space-md); font-size: var(--text-sm); }
.btn--xl  { min-height: 52px; padding: var(--space-md) var(--space-xl); font-size: var(--text-md); }

.link-arrow {
  display: inline-block;
  max-inline-size: 100%;
  color: var(--color-ink);
  font-size: var(--text-base);
  text-decoration: underline;
  text-decoration-color: var(--color-rule-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  white-space: normal;
  overflow-wrap: anywhere;
  transition: text-decoration-color var(--dur-short) var(--ease-out);
}

.link-arrow::after { content: " →"; }

@media (hover: hover) and (pointer: fine) {
  .link-arrow:hover { text-decoration-color: var(--color-accent); text-decoration-thickness: 1.5px; }
}

/* ————— герой · H1 Marquee ————— */

.hero {
  min-height: 82dvh;
  display: grid;
  align-content: end;
  padding: var(--space-xl) var(--page-gutter) var(--space-3xl);
}

.hero__display {
  margin: 0;
  font-size: var(--text-display);
  line-height: 1.02;
  letter-spacing: -0.03em;
  max-width: 20ch;
}

.hero-rule {
  height: 3px;
  background: var(--color-ink);
}

/* ————— вступление + первый CTA ————— */

.intro {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--space-xl);
  align-items: end;
  padding: var(--space-3xl) var(--page-gutter) var(--space-3xl);
}

.lead {
  font-size: var(--text-lg);
  line-height: 1.5;
  letter-spacing: -0.01em;
  max-width: 26em;
  color: var(--color-ink);
}

.intro__aside {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-md);
}

.intro__note {
  font-size: var(--text-sm);
  color: var(--color-muted);
}

/* ————— заголовки секций · S2 hanging ————— */

.head-hang { padding-block: var(--space-3xl) var(--space-xl); }

.head-hang h2 {
  margin: 0;
  font-size: var(--text-2xl);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

section { padding-inline: var(--page-gutter); }

/* ————— как это работает · F4 step sequence ————— */

.how { padding-block: 0 var(--space-2xl); }

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.steps li {
  border-top: var(--rule-hair) solid var(--color-rule-strong);
  padding-top: var(--space-md);
}

.stage {
  display: block;
  margin-bottom: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
}

.steps h3 {
  margin: 0 0 var(--space-xs);
  font-size: var(--text-md);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.steps p {
  font-size: var(--text-base);
  line-height: 1.55;
  max-width: 26em;
}

/* ————— статусы ————— */

.statuses { padding-block: 0 var(--space-3xl); }

.statuses__lead {
  font-size: var(--text-md);
  line-height: 1.5;
  max-width: 32em;
  color: var(--color-ink);
  margin-bottom: var(--space-xl);
}

.status-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  list-style: none;
  margin: 0 var(--page-gutter) var(--space-lg) 0;   /* один намеренный вынос за сетку — вправо */
  padding: 0;
}

.status-strip li {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
  padding: var(--space-sm) var(--space-md);
  border: var(--rule-hair) solid var(--color-rule-strong);
  border-radius: var(--radius-chip);
  color: var(--color-muted);
  background: var(--color-paper);
  white-space: nowrap;
}

.status-strip li.is-hot {
  background: var(--color-accent-ink);
  border-color: var(--color-accent-ink);
  color: var(--color-paper);
}

.status-strip li.is-hot::before {
  content: "";
  display: inline-block;
  inline-size: 0.5em;
  block-size: 0.5em;
  margin-inline-end: 0.5em;
  border-radius: var(--radius-chip);
  background: var(--color-paper);
  vertical-align: baseline;
}

.statuses__note {
  max-width: 36em;
  font-size: var(--text-sm);
}

/* ————— что внутри · F3 tabular spec sheet ————— */

.inside { padding-block: 0 var(--space-2xl); }

.spec {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.spec tr {
  border-top: var(--rule-hair) solid var(--color-rule);
}

.spec tbody tr:last-child { border-bottom: var(--rule-hair) solid var(--color-rule); }

.spec th {
  width: 24%;
  padding: var(--space-md) var(--space-lg) var(--space-md) 0;
  text-align: start;
  vertical-align: top;
  font-weight: 500;
  color: var(--color-ink);
}

.spec td {
  padding: var(--space-md) var(--space-lg) var(--space-md) 0;
  vertical-align: top;
  color: var(--color-ink);
}

.spec td.note {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

/* ————— вопросы ————— */

.faq { padding-block: 0 var(--space-3xl); }

.faq details { border-top: var(--rule-hair) solid var(--color-rule); }
.faq details:last-child { border-bottom: var(--rule-hair) solid var(--color-rule); }

.faq summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-lg);
  min-height: 44px;
  padding-block: var(--space-md);
  cursor: pointer;
  list-style: none;
}

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

.faq summary h3 {
  margin: 0;
  font-size: var(--text-md);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.faq summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--color-muted);
  transition: transform var(--dur-short) var(--ease-out);
}

.faq details[open] summary::after { transform: rotate(45deg); }

.faq details > p {
  max-width: 38em;
  padding-bottom: var(--space-lg);
}

/* ————— оффер · финальный CTA ————— */

.offer {
  margin-inline: 0;
  padding: var(--space-3xl) var(--page-gutter);
  background: var(--color-paper-2);
  border-top: var(--rule-hair) solid var(--color-rule);
  border-bottom: var(--rule-hair) solid var(--color-rule);
}

.offer__display {
  margin: 0 0 var(--space-md);
  font-size: var(--text-display-s);
  line-height: 1.05;
  letter-spacing: -0.025em;
  max-width: 14ch;
}

.offer__display .u {
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 0.06em;
  text-underline-offset: 0.12em;
}

.offer__text {
  max-width: 32em;
  margin-bottom: var(--space-xl);
  color: var(--color-ink);
}

/* ————— футер · Ft2 inline single line ————— */

.foot {
  border-top: 0; /* линию даёт нижняя граница оффер-полосы; здесь — воздух */
  padding: var(--space-xl) var(--page-gutter) var(--space-2xl);
}

.foot__line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-xs) var(--space-sm);
  font-size: var(--text-sm);
}

.foot__line .wordmark { font-size: var(--text-base); }

.foot__line a {
  color: var(--color-muted);
  text-decoration: none;
  white-space: nowrap;
}

@media (hover: hover) and (pointer: fine) {
  .foot__line a:hover {
    color: var(--color-ink);
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
    text-decoration-thickness: 1.5px;
    text-underline-offset: 4px;
  }
}

.foot__dot { color: var(--color-neutral); }

/* ————— движение: один выход на загрузку героя ————— */

.reveal {
  opacity: 1;
  transform: translateY(10px);
  animation: reveal var(--dur-long) var(--ease-out) forwards;
  animation-delay: calc(var(--i, 0) * 90ms);
}

@keyframes reveal {
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { animation: none; opacity: 1; transform: none; }
  .faq summary::after { transition: none; }
  .btn, .link-arrow { transition: none; }
  *, *::before, *::after {
    animation-duration: 150ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 150ms !important;
  }
}

/* ————— адаптив ————— */

@media (max-width: 60rem) {
  .intro { grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); align-items: start; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .spec th { width: 30%; }
}

@media (max-width: 40rem) {
  .nav-pill { gap: var(--space-xs); padding-inline-start: var(--space-sm); max-width: calc(100vw - 2 * var(--space-md)); }
  .nav-pill__links { display: none; }

  .hero { min-height: 78dvh; padding-block-end: var(--space-xl); }
  .hero__display { font-size: var(--text-display-s); letter-spacing: -0.025em; }

  .head-hang { padding-block: var(--space-2xl) var(--space-lg); }

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

  .spec:not(.wide-table) tr {
    display: block;
    padding-block: var(--space-md);
  }
  .spec:not(.wide-table) th, .spec:not(.wide-table) td {
    display: block;
    width: auto;
    padding: 0;
  }
  .spec:not(.wide-table) th { margin-bottom: var(--space-2xs); }
  .spec:not(.wide-table) td { margin-bottom: var(--space-3xs); }
  .spec:not(.wide-table) td:last-child { margin-bottom: 0; }

  .status-strip li { padding: var(--space-sm) var(--space-sm); }

  .btn--xl { width: 100%; }
}