/* Абрис — светокопия диазо: берлинская лазурь, белая регистрация, чертёжный стол */
:root {
  --bg: #0a3a6e;
  --bg-deep: #062748;
  --ink: #e8f2ff;
  --ink-dim: rgba(232, 242, 255, 0.62);
  --line: rgba(232, 242, 255, 0.28);
  --accent: #f2d08a;
  --accent-hot: #ffe6a8;
  --sheet: #eef3f0;
  --sheet-ink: #0e2a3a;
  --sheet-mute: rgba(14, 42, 58, 0.62);
  --cyan-print: #7ec8e8;
  --shell: 1120px;
  --ease: cubic-bezier(0.22, 0.68, 0.28, 1);
  --font-display: "Big Shoulders Display", "Arial Narrow", sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

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

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.55;
  background: var(--bg-deep);
  overflow-x: hidden;
}

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

a {
  color: var(--accent-hot);
  text-underline-offset: 0.18em;
}

a:hover {
  color: #fff;
}

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

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--bg-deep);
  padding: 0.55rem 0.9rem;
  z-index: 100;
}

.skip:focus {
  left: 0.75rem;
  top: 0.75rem;
}

.shell {
  width: min(var(--shell), calc(100% - 2.2rem));
  margin-inline: auto;
}

.diazo {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 90% 60% at 50% -10%, rgba(126, 200, 232, 0.18), transparent 55%),
    radial-gradient(ellipse 50% 40% at 100% 80%, rgba(6, 20, 40, 0.55), transparent 50%),
    linear-gradient(180deg, #0c457f 0%, var(--bg) 38%, var(--bg-deep) 100%);
}

.grid-lines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.14;
  background-image:
    linear-gradient(rgba(232, 242, 255, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 242, 255, 0.35) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 75%);
}

.mast,
main,
.cookie-note,
.end {
  position: relative;
  z-index: 1;
}

.mast {
  border-bottom: 1px solid var(--line);
  background: rgba(6, 39, 72, 0.82);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.mast-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.35rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
}

.brand:hover .brand-mark {
  transform: translateY(-2px);
  box-shadow:
    0 0 0 1px rgba(242, 208, 138, 0.45),
    0 10px 22px rgba(0, 0, 0, 0.35);
}

.brand-mark {
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 2px;
  box-shadow:
    0 0 0 1px rgba(126, 200, 232, 0.28),
    0 6px 16px rgba(0, 0, 0, 0.28);
  transition: transform 220ms var(--ease), box-shadow 220ms var(--ease);
}

.brand-word {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 1.35rem;
}

.mast-nav {
  display: flex;
  gap: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.mast-nav a {
  color: var(--ink-dim);
  text-decoration: none;
}

.mast-nav a:hover {
  color: var(--accent-hot);
}

.kicker {
  margin: 0 0 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 0.95;
  margin: 0;
}

h1 {
  font-size: clamp(3.2rem, 9vw, 5.6rem);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
}

.lede {
  margin: 0.85rem 0 0;
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  font-weight: 500;
  color: var(--accent-hot);
}

.deck {
  margin: 1rem 0 0;
  max-width: 34rem;
  color: var(--ink-dim);
}

.reg-row {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.reg-chip {
  appearance: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  color: var(--cyan-print);
  background: rgba(6, 39, 72, 0.35);
  position: relative;
  transition: border-color 220ms var(--ease), color 220ms var(--ease), transform 220ms var(--ease);
}

.reg-chip::before,
.reg-chip::after {
  content: "";
  position: absolute;
  background: var(--accent);
}

.reg-chip::before {
  width: 7px;
  height: 1px;
  left: -1px;
  top: 50%;
}

.reg-chip::after {
  width: 1px;
  height: 7px;
  left: 2px;
  top: calc(50% - 3px);
}

.reg-chip:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  color: var(--accent-hot);
}

.reg-chip.is-on {
  border-color: var(--accent);
  color: var(--accent-hot);
  background: rgba(242, 208, 138, 0.1);
}

.hero {
  padding: clamp(2rem, 5vw, 3.4rem) 0 1.2rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(1.4rem, 4vw, 2.6rem);
  align-items: center;
}

.plate-frame {
  position: relative;
  min-height: 300px;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(126, 200, 232, 0.08), transparent 40%),
    rgba(6, 39, 72, 0.55);
  padding: 1.6rem;
  overflow: hidden;
  animation: plate-breathe 7s ease-in-out infinite;
}

.plate-hatch {
  position: absolute;
  inset: 28px;
  border: 1px dashed rgba(232, 242, 255, 0.35);
  background:
    repeating-linear-gradient(
      -32deg,
      transparent 0 10px,
      rgba(126, 200, 232, 0.08) 10px 11px
    );
  animation: hatch-drift 22s linear infinite;
}

.scan-line {
  position: absolute;
  left: 28px;
  right: 28px;
  top: 28px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-hot), transparent);
  opacity: 0;
  pointer-events: none;
}

.plate-frame.is-live .scan-line {
  opacity: 0.85;
  animation: scan-sweep 2.4s ease-in-out infinite;
}

.plate-frame.is-live .reg::before,
.plate-frame.is-live .reg::after {
  animation: reg-pulse 1.6s ease-in-out infinite;
}

.plate-frame.is-exposing {
  animation: none;
}

.plate-frame.is-exposing .scan-line {
  animation: scan-sweep 0.7s linear 1;
  opacity: 1;
}

.reg {
  position: absolute;
  width: 18px;
  height: 18px;
}

.reg::before,
.reg::after {
  content: "";
  position: absolute;
  background: var(--accent);
}

.reg::before {
  width: 18px;
  height: 1px;
  top: 8px;
  left: 0;
}

.reg::after {
  width: 1px;
  height: 18px;
  left: 8px;
  top: 0;
}

.reg-tl { top: 10px; left: 10px; }
.reg-tr { top: 10px; right: 10px; }
.reg-bl { bottom: 10px; left: 10px; }
.reg-br { bottom: 10px; right: 10px; }

.plate-code {
  position: absolute;
  left: 50%;
  top: 46%;
  transform: translate(-50%, -50%);
  margin: 0;
  font-family: var(--font-mono);
  letter-spacing: 0.2em;
  font-size: 0.78rem;
  color: rgba(232, 242, 255, 0.55);
  white-space: nowrap;
}

.plate-cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 1rem;
  margin: 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.plate-frame.is-live .plate-hatch {
  animation-duration: 6s;
  border-color: var(--accent);
}

.plate-frame.is-live .plate-code {
  color: var(--accent-hot);
}

@keyframes hatch-drift {
  to { background-position: 80px 0; }
}

@keyframes plate-breathe {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

@keyframes scan-sweep {
  from { top: 28px; }
  to { top: calc(100% - 30px); }
}

@keyframes reg-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.shutter {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  background: #e8f2ff;
  opacity: 0;
}

.shutter.is-fire {
  animation: shutter-flash 420ms var(--ease) both;
}

@keyframes shutter-flash {
  0% { opacity: 0; }
  18% { opacity: 0.55; }
  100% { opacity: 0; }
}

.bench {
  padding: 1rem 0 2.4rem;
}

.sheet {
  background: var(--sheet);
  color: var(--sheet-ink);
  border: 1px solid rgba(232, 242, 255, 0.2);
  box-shadow:
    0 0 0 1px rgba(6, 39, 72, 0.08) inset,
    0 28px 56px rgba(0, 0, 0, 0.35);
  padding: 1.35rem 1.3rem 1.45rem;
  position: relative;
}

.sheet::before {
  content: "";
  position: absolute;
  inset: 9px;
  border: 1px solid rgba(10, 58, 110, 0.18);
  pointer-events: none;
}

.sheet-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
  padding-bottom: 0.65rem;
  border-bottom: 2px solid rgba(10, 58, 110, 0.2);
  position: relative;
  z-index: 1;
}

.sheet-head .kicker {
  color: #1a5f96;
}

.sheet-no {
  margin: 0;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  color: #8a4a28;
}

.drop {
  position: relative;
  z-index: 1;
  min-height: 210px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 1.35rem;
  background:
    repeating-linear-gradient(
      0deg,
      transparent 0 27px,
      rgba(10, 58, 110, 0.08) 27px 28px
    ),
    #f5f8f6;
  border: 2px dashed rgba(10, 58, 110, 0.28);
  cursor: pointer;
  transition: border-color 240ms var(--ease), background 240ms var(--ease);
}

.drop.is-over {
  border-color: #1a5f96;
  background: #eaf3fb;
}

.drop-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.45rem;
  letter-spacing: 0.03em;
  font-weight: 600;
  color: var(--sheet-ink);
}

.drop-hint {
  margin: 0.4rem 0 0;
  color: var(--sheet-mute);
  font-size: 0.95rem;
}

.drop.is-loaded {
  cursor: default;
  min-height: auto;
  padding: 1rem;
}

.preview-wrap {
  width: 100%;
  display: grid;
  gap: 0.55rem;
  justify-items: center;
}

#preview {
  max-height: 280px;
  margin: 0 auto;
  border: 1px solid rgba(10, 58, 110, 0.2);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  transition: transform 280ms var(--ease);
}

.preview-meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--sheet-mute);
}

.meter {
  position: relative;
  z-index: 1;
  margin-top: 0.85rem;
  height: 4px;
  background: rgba(10, 58, 110, 0.12);
  overflow: hidden;
}

.meter-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #1a5f96, #f2d08a);
  transition: width 280ms linear;
}

.meter.is-run .meter-fill {
  width: 100%;
  transition: width 700ms var(--ease);
}

.tool-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}

.btn-slim {
  padding: 0.55rem 0.85rem !important;
  min-height: 40px;
  font-size: 0.68rem !important;
}

.side-label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #1a5f96;
}

.side-label select {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  border: 1px solid rgba(10, 58, 110, 0.28);
  background: rgba(255, 255, 255, 0.7);
  color: var(--sheet-ink);
  padding: 0.35rem 0.45rem;
}

.estimate {
  margin: 0.45rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--sheet-mute);
}

.sheet-no.is-tick {
  animation: sheet-tick 380ms var(--ease);
}

@keyframes sheet-tick {
  0% { transform: translateY(0); opacity: 1; }
  40% { transform: translateY(-6px); opacity: 0.2; }
  100% { transform: translateY(0); opacity: 1; }
}

.result-thumb {
  max-height: 160px;
  margin: 0 0 0.9rem;
  border: 1px solid rgba(10, 58, 110, 0.2);
}

.step-list li,
.ask-list article,
.strip-grid div {
  transition: transform 240ms var(--ease), border-color 240ms var(--ease);
}

.step-list li:hover,
.ask-list article:hover,
.strip-grid div:hover {
  transform: translateY(-3px);
  border-color: rgba(242, 208, 138, 0.45);
}

.controls {
  position: relative;
  z-index: 1;
  margin-top: 1.15rem;
  display: grid;
  gap: 1rem;
}

.formats {
  margin: 0;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(10, 58, 110, 0.25);
  background: rgba(255, 255, 255, 0.45);
}

.formats legend {
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  font-size: 0.68rem;
  text-transform: uppercase;
  padding: 0 0.3rem;
  color: #1a5f96;
}

.formats label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-right: 1rem;
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.quality label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #1a5f96;
  margin-bottom: 0.35rem;
}

.quality input[type="range"] {
  width: 100%;
  accent-color: #0a3a6e;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.btn-cyan,
.btn-ink {
  appearance: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  font-size: 0.72rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  max-width: 100%;
  transition: transform 220ms var(--ease), box-shadow 220ms var(--ease), opacity 220ms var(--ease);
}

.btn-cyan {
  background: linear-gradient(180deg, #1f6fad, #0a3a6e);
  color: #fff;
  padding: 0.9rem 1.35rem;
  box-shadow: 0 5px 0 #062748, 0 12px 22px rgba(0, 0, 0, 0.25);
}

.btn-cyan:hover:not(:disabled) {
  transform: translateY(-2px);
}

.btn-cyan:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: 0 4px 0 #062748;
}

.btn-ink {
  background: #0e2a3a;
  color: var(--ink);
  border: 1px solid rgba(126, 200, 232, 0.35);
  padding: 0.85rem 1.15rem;
}

.btn-ink:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.status {
  position: relative;
  z-index: 1;
  margin: 1rem 0 0;
  min-height: 1.5em;
  font-size: 0.95rem;
  color: var(--sheet-mute);
}

.result {
  position: relative;
  z-index: 1;
  margin-top: 1.15rem;
  padding: 1rem 1.05rem;
  border: 1px solid rgba(10, 58, 110, 0.28);
  background: rgba(255, 255, 255, 0.5);
  animation: sheet-in 420ms var(--ease) both;
}

.result .kicker {
  color: #1a5f96;
}

.result-meta {
  margin: 0.35rem 0 0.9rem;
  color: var(--sheet-mute);
}

@keyframes sheet-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.strip {
  padding: 1.4rem 0 2.4rem;
}

.strip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.strip-grid div {
  padding: 1.2rem 1rem;
  border-right: 1px solid var(--line);
}

.strip-grid div:last-child {
  border-right: 0;
}

.strip-grid b {
  display: block;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.03em;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: #fff;
}

.strip-grid span {
  color: var(--ink-dim);
  font-size: 0.92rem;
}

.expose,
.ask {
  padding: 2.8rem 0;
}

.band {
  margin-bottom: 1.4rem;
}

.band h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.35rem);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
  counter-reset: exp;
}

.step-list li {
  counter-increment: exp;
  padding: 1.2rem 1.05rem;
  background: rgba(6, 39, 72, 0.55);
  border: 1px solid var(--line);
}

.step-list li::before {
  content: "Шаг " counter(exp);
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.step-list strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.02em;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: #fff;
}

.step-list p {
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.95rem;
}

.ask-list {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 0.85rem;
}

.ask-list article {
  padding: 1.15rem 1.05rem;
  border: 1px solid var(--line);
  background: rgba(6, 39, 72, 0.5);
}

.ask-lead {
  grid-row: span 3;
  background:
    linear-gradient(150deg, rgba(126, 200, 232, 0.12), transparent 55%),
    rgba(6, 39, 72, 0.72);
}

.ask-list h3 {
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  margin-bottom: 0.4rem;
  color: #fff;
}

.ask-list p {
  margin: 0;
  color: var(--ink-dim);
}

.cookie-note {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  background: rgba(6, 39, 72, 0.96);
  border-top: 1px solid var(--line);
  padding: 0.85rem 0;
}

.cookie-note-inner {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.cookie-note p {
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.9rem;
}

.end {
  margin-top: 2rem;
  padding: 2.6rem 0 2rem;
  border-top: 1px solid var(--line);
  background: #041c33;
}

.end-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.7rem;
}

.end-lockup .brand-mark {
  width: 36px;
  height: 36px;
}

.end-lockup .brand-word,
.end-brand .brand-word {
  margin: 0;
}

.end-brand p:last-child {
  margin: 0;
  color: var(--ink-dim);
  max-width: 22rem;
}

.end ul {
  list-style: none;
  margin: 0.4rem 0 0;
  padding: 0;
}

.end li {
  margin: 0.28rem 0;
}

.end a {
  color: var(--ink-dim);
  text-decoration: none;
}

.end a:hover {
  color: var(--accent-hot);
}

.legal-note {
  margin-top: 1.7rem;
  padding-top: 1.05rem;
  border-top: 1px solid var(--line);
}

.legal-note p:last-child {
  margin: 0.35rem 0 0;
  color: var(--ink-dim);
  max-width: 48rem;
}

.end-bottom {
  margin-top: 1.3rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: rgba(232, 242, 255, 0.4);
  font-size: 0.85rem;
}

.legal-page {
  padding: 3rem 0 4rem;
  max-width: 42rem;
}

.legal-page h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 1rem;
}

.legal-page p {
  color: var(--ink-dim);
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 560ms var(--ease), transform 560ms var(--ease);
}

.reveal.is-live {
  opacity: 1;
  transform: none;
}

@media (max-width: 900px) {
  .hero-grid,
  .step-list,
  .ask-list,
  .strip-grid,
  .end-grid {
    grid-template-columns: 1fr;
  }

  .strip-grid div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .ask-lead {
    grid-row: auto;
  }

  .mast-nav {
    display: none;
  }

  .plate-frame {
    min-height: 220px;
  }

  .cta-row {
    flex-direction: column;
  }

  .btn-cyan,
  .btn-ink {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .reveal { opacity: 1; transform: none; }
  .plate-frame { transform: none; }
  .shutter { display: none; }
}