:root {
  --bg: #050608;
  --ink: #f5f7fb;
  --muted: #aab3c1;
  --line: rgba(255, 255, 255, 0.18);
  --yellow: #ffd21f;
  --cyan: #42dfff;
  --panel: rgba(5, 8, 12, 0.58);
  --ease: cubic-bezier(0.19, 1, 0.22, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--ink);
  background: #030405;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

button,
a {
  font: inherit;
}

button {
  cursor: pointer;
}

.topbar {
  position: fixed;
  top: 16px;
  left: 50%;
  z-index: 70;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  width: min(1220px, calc(100% - 36px));
  min-height: 58px;
  padding: 8px 10px 8px 20px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(1, 3, 6, 0.78);
  backdrop-filter: blur(20px);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.45);
  transform: translateX(-50%);
}

.brand,
.nav-links a {
  color: var(--ink);
  text-decoration: none;
}

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  font-size: 0.86rem;
  font-weight: 900;
  letter-spacing: 0.04em;
}

.brand-mark {
  width: 22px;
  height: 22px;
  border: 2px solid var(--yellow);
  background:
    linear-gradient(135deg, transparent 38%, var(--yellow) 39% 58%, transparent 59%),
    linear-gradient(45deg, rgba(255, 210, 31, 0.18), rgba(255, 255, 255, 0.06));
  clip-path: polygon(50% 0, 100% 34%, 82% 100%, 18% 100%, 0 34%);
  box-shadow: 0 0 30px rgba(255, 210, 31, 0.42);
}

.nav-links {
  justify-self: center;
  display: flex;
  gap: clamp(18px, 3vw, 42px);
}

.nav-links a {
  color: rgba(245, 247, 251, 0.72);
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
}

.nav-links a:hover {
  color: var(--cyan);
}

.ghost-button,
.primary-button,
.secondary-button {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 0;
  font-size: 0.84rem;
  font-weight: 900;
}

.ghost-button {
  padding: 0 18px;
  color: var(--yellow);
  border: 1px solid var(--yellow);
  background: rgba(255, 210, 31, 0.07);
}

.primary-button {
  padding: 0 22px;
  color: #060606;
  border: 1px solid rgba(255, 230, 92, 0.95);
  background: linear-gradient(135deg, #d79c00, #ffd21f 56%, #fff07a);
  box-shadow: 0 18px 52px rgba(255, 210, 31, 0.3);
}

.secondary-button {
  padding: 0 22px;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.36);
  background: rgba(5, 8, 12, 0.55);
}

.ghost-button svg,
.primary-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.scroll-meter {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
}

.scroll-meter span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--yellow), var(--cyan), var(--yellow));
}

.scene-rail {
  display: none;
}

.story {
  position: relative;
  background: #020304;
}

.slide {
  --slash-left: 0;
  --slash-right: 86px;
  position: relative;
  display: flex;
  align-items: center;
  min-height: 92vh;
  margin-top: -72px;
  padding: clamp(120px, 12vw, 170px) clamp(24px, 7vw, 110px) clamp(110px, 10vw, 160px);
  isolation: isolate;
  overflow: hidden;
  box-shadow: 0 -44px 120px rgba(0, 0, 0, 0.9);
  clip-path: polygon(0 0, 100% var(--slash-left), 100% calc(100% - var(--slash-right)), 72% 100%, 0 calc(100% - 36px));
}

.slide:first-child {
  min-height: 100vh;
  margin-top: 0;
  padding-top: clamp(120px, 11vw, 160px);
}

.slide::before {
  position: absolute;
  inset: 0;
  z-index: -3;
  content: "";
  background-image: var(--bg);
  background-size: cover;
  background-position: center;
  filter: hue-rotate(var(--photo-hue, 42deg)) saturate(1.18) contrast(1.08) brightness(0.92);
  transform: scale(1.04) translate3d(calc((var(--local-progress, 0) - 0.5) * -22px), calc((var(--local-progress, 0) - 0.5) * -16px), 0);
  transform-origin: center;
  transition: transform 120ms linear;
}

.slide::after {
  position: absolute;
  inset: 0;
  z-index: -2;
  content: "";
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(100deg, rgba(0, 0, 0, 0.97) 0 13%, rgba(0, 0, 0, 0.76) 30%, rgba(0, 0, 0, 0.36) 58%, rgba(0, 0, 0, 0.82) 100%),
    radial-gradient(circle at calc(18% + var(--local-progress, 0) * 18%) 45%, color-mix(in srgb, var(--accent) 26%, transparent), transparent 28rem);
  background-size: 82px 82px, 82px 82px, cover, cover;
}

.slide-inner::before {
  position: absolute;
  left: clamp(-92px, -5vw, -68px);
  top: 70px;
  bottom: 0;
  width: 1px;
  content: "";
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.52), transparent);
  transform: scaleY(calc(0.28 + var(--text-progress, 0) * 0.72));
  transform-origin: top;
}

.slide-inner::after {
  position: absolute;
  left: calc(-1 * clamp(98px, 6vw, 120px));
  top: clamp(-132px, -7vw, -86px);
  z-index: 2;
  content: attr(data-index);
  color: var(--accent);
  font-size: clamp(2.4rem, 4.7vw, 4.7rem);
  font-weight: 900;
  line-height: 0.9;
  text-shadow: 0 0 24px color-mix(in srgb, var(--accent) 44%, transparent);
  opacity: calc(0.25 + var(--text-progress, 0) * 0.75);
  transform: translateY(calc((1 - var(--text-progress, 0)) * 18px));
}

.slide-inner > * {
  opacity: calc(0.08 + var(--text-progress, 0) * 0.92);
  filter: blur(calc((1 - var(--text-progress, 0)) * 9px));
  transform: translateY(calc((1 - var(--text-progress, 0)) * 34px)) skewX(calc((1 - var(--text-progress, 0)) * -5deg));
  transition: opacity 120ms linear, filter 120ms linear, transform 120ms linear;
}

.slide-inner > .stage {
  transform: translateX(calc((1 - var(--text-progress, 0)) * -54px));
}

.slide-inner > .feature-row,
.slide-inner > .mini-grid,
.slide-inner > .check-list,
.slide-inner > .button-row,
.slide-inner > .status-panel,
.slide-inner > .price-card {
  opacity: calc(0.02 + var(--detail-progress, 0) * 0.98);
  filter: blur(calc((1 - var(--detail-progress, 0)) * 10px));
  transform: translateY(calc((1 - var(--detail-progress, 0)) * 44px));
}

.slide-blade,
.slide-scan,
.slide-spark {
  position: absolute;
  z-index: 3;
  pointer-events: none;
}

.slide-blade {
  left: -10vw;
  right: -10vw;
  bottom: clamp(34px, 5vw, 64px);
  height: clamp(46px, 8vw, 108px);
  background:
    linear-gradient(90deg, transparent, color-mix(in srgb, var(--accent) 58%, transparent), transparent),
    rgba(0, 0, 0, 0.28);
  clip-path: polygon(0 62%, 26% 38%, 53% 100%, 100% 16%, 100% 100%, 0 100%);
  opacity: calc(0.46 + var(--blade-progress, 0) * 0.28);
  transform: translateX(calc((var(--local-progress, 0) - 0.5) * 92px)) skewX(-15deg);
}

.slide-scan {
  left: -14vw;
  right: -14vw;
  top: calc(22% + var(--scan-progress, 0) * 42%);
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.86), var(--accent), transparent);
  box-shadow: 0 0 34px color-mix(in srgb, var(--accent) 55%, transparent);
  opacity: calc(0.22 + var(--blade-progress, 0) * 0.62);
  transform: rotate(calc(-8deg + var(--local-progress, 0) * 13deg));
}

.slide-spark {
  right: clamp(22px, 8vw, 120px);
  top: clamp(110px, 18vw, 210px);
  width: min(330px, 36vw);
  aspect-ratio: 1.8;
  border: 1px solid color-mix(in srgb, var(--accent) 48%, transparent);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 18%, transparent), transparent 54%),
    repeating-linear-gradient(90deg, transparent 0 20px, color-mix(in srgb, var(--accent) 18%, transparent) 21px 22px);
  clip-path: polygon(18% 0, 100% 0, 82% 100%, 0 78%);
  mix-blend-mode: screen;
  opacity: calc(0.08 + var(--text-progress, 0) * 0.22);
  transform: translate3d(calc((0.5 - var(--local-progress, 0)) * 74px), calc((var(--local-progress, 0) - 0.5) * 46px), 0) rotate(-7deg);
}

.slide-install .slide-blade {
  clip-path: polygon(0 10%, 42% 54%, 68% 20%, 100% 82%, 100% 100%, 0 100%);
}

.slide-start .slide-blade {
  clip-path: polygon(0 100%, 0 34%, 22% 72%, 58% 0, 100% 48%, 100% 100%);
}

.slide-app .slide-blade {
  clip-path: polygon(0 42%, 35% 0, 70% 72%, 100% 18%, 100% 100%, 0 100%);
}

.slide-booking .slide-blade {
  clip-path: polygon(0 0, 100% 54%, 100% 100%, 0 100%);
}

.slide-install {
  --slash-left: 38px;
  --slash-right: 118px;
  justify-content: flex-start;
  background-position: center right;
  clip-path: polygon(0 64px, 37% 0, 100% 74px, 100% calc(100% - 74px), 45% 100%, 0 calc(100% - 40px));
}

.slide-start {
  --slash-left: 0;
  --slash-right: 92px;
  justify-content: flex-start;
  background-position: center;
  clip-path: polygon(0 0, 100% 42px, 100% calc(100% - 132px), 68% 100%, 0 calc(100% - 58px));
}

.slide-app {
  justify-content: flex-start;
  background-position: center right;
  clip-path: polygon(0 78px, 44% 0, 100% 54px, 100% calc(100% - 72px), 54% 100%, 0 calc(100% - 110px));
}

.slide-booking {
  min-height: 86vh;
  margin-bottom: 0;
  background-position: center;
  clip-path: polygon(0 0, 100% 70px, 100% 100%, 0 100%);
}

.slide-inner {
  position: relative;
  z-index: 5;
  width: min(760px, 100%);
  margin-left: clamp(46px, 6vw, 78px);
  text-shadow: 0 4px 28px rgba(0, 0, 0, 0.74);
  transform: translate3d(calc((1 - var(--text-progress, 0)) * -42px), calc((1 - var(--text-progress, 0)) * 38px), 0);
  transition: transform 120ms linear;
}

.slide-hero .slide-inner {
  width: min(930px, 100%);
}

.slide-inner.narrow {
  width: min(570px, 100%);
}

.stage {
  margin: 0 0 18px;
  color: color-mix(in srgb, var(--accent) 84%, white);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  color: #fff;
  font-weight: 900;
  line-height: 0.94;
  letter-spacing: 0;
  text-wrap: balance;
  text-transform: uppercase;
}

h1 {
  max-width: 900px;
  font-size: clamp(3.1rem, 6vw, 6rem);
}

h2 {
  max-width: 12ch;
  font-size: clamp(2.35rem, 5.8vw, 5.35rem);
}

.slide-inner > p:not(.stage) {
  width: min(560px, 100%);
  margin: 24px 0 0;
  color: rgba(245, 247, 251, 0.78);
  font-size: clamp(1rem, 1.25vw, 1.2rem);
  line-height: 1.62;
}

.feature-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  width: min(760px, 100%);
  margin-top: 34px;
}

.feature-row article,
.mini-grid article {
  position: relative;
  padding-left: 18px;
}

.feature-row article::before,
.mini-grid article::before {
  position: absolute;
  left: 0;
  top: 4px;
  width: 7px;
  height: 28px;
  content: "";
  background: var(--accent);
  clip-path: polygon(50% 0, 100% 20%, 100% 80%, 50% 100%, 0 80%, 0 20%);
  box-shadow: 0 0 22px color-mix(in srgb, var(--accent) 70%, transparent);
}

.feature-row strong,
.mini-grid strong {
  display: block;
  color: #fff;
  font-size: 0.86rem;
  font-weight: 900;
  text-transform: uppercase;
}

.feature-row span,
.mini-grid span {
  display: block;
  margin-top: 8px;
  color: rgba(245, 247, 251, 0.68);
  font-size: 0.88rem;
  line-height: 1.45;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.check-list {
  display: grid;
  gap: 16px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 34px;
  color: rgba(245, 247, 251, 0.82);
  font-size: 1rem;
  line-height: 1.45;
}

.check-list li::before {
  position: absolute;
  left: 0;
  top: 0.08em;
  content: "✓";
  color: var(--cyan);
  font-size: 1.3rem;
  font-weight: 900;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  width: min(720px, 100%);
  margin-top: 34px;
}

.status-panel,
.price-card {
  width: min(410px, 100%);
  margin-top: 28px;
  padding: 22px 24px;
  border: 1px solid rgba(255, 210, 31, 0.5);
  background: linear-gradient(135deg, rgba(11, 13, 18, 0.78), rgba(11, 13, 18, 0.36));
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
}

.status-panel strong {
  display: block;
  margin-bottom: 12px;
  color: var(--yellow);
  font-size: 1.25rem;
  font-weight: 900;
  text-transform: uppercase;
}

.status-panel span {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(245, 247, 251, 0.74);
}

.price-card {
  border-color: rgba(255, 255, 255, 0.22);
}

.price-card > span {
  color: rgba(245, 247, 251, 0.7);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.price-card > strong {
  display: block;
  margin-top: 10px;
  color: #fff;
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  line-height: 1;
}

.price-card ul {
  display: grid;
  gap: 10px;
  margin: 22px 0;
  padding: 0;
  list-style: none;
}

.price-card li {
  color: rgba(245, 247, 251, 0.78);
  font-size: 0.94rem;
}

.price-card li::before {
  content: "✓ ";
  color: var(--cyan);
  font-weight: 900;
}

.final-button {
  width: 100%;
}

@media (max-width: 980px) {
  .topbar {
    grid-template-columns: auto auto;
  }

  .nav-links {
    display: none;
  }

  .ghost-button {
    justify-self: end;
  }

  .slide {
    min-height: 88vh;
    margin-top: -48px;
    padding: 112px 22px 96px;
    clip-path: polygon(0 0, 100% 34px, 100% calc(100% - 52px), 70% 100%, 0 calc(100% - 30px)) !important;
  }

  .slide:first-child {
    min-height: 94vh;
  }

  .slide-inner {
    margin-left: 0;
  }

  .slide-inner::before {
    display: none;
  }

  .slide-inner {
    transform: translate3d(0, calc((1 - var(--text-progress, 0)) * 28px), 0);
  }

  h1 {
    font-size: clamp(3rem, 15vw, 5.4rem);
  }

  h2 {
    font-size: clamp(2.45rem, 12vw, 4.6rem);
  }

  .feature-row,
  .mini-grid {
    grid-template-columns: 1fr;
    width: min(470px, 100%);
  }

  .slide::after {
    bottom: 28px;
  }
}

@media (max-width: 560px) {
  .topbar {
    top: 10px;
    width: calc(100% - 20px);
    min-height: 52px;
    padding-left: 12px;
  }

  .brand {
    font-size: 0.76rem;
  }

  .ghost-button {
    min-width: 42px;
    padding: 0 12px;
  }

  .ghost-button span {
    display: none;
  }

  .slide {
    min-height: 90vh;
    padding: 100px 18px 84px;
    background-position: center;
  }

  h1,
  h2 {
    max-width: 100%;
    font-size: clamp(2rem, 9.2vw, 3.1rem);
    line-height: 1;
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .slide-inner > p:not(.stage) {
    font-size: 0.96rem;
  }

  .button-row {
    flex-direction: column;
    align-items: stretch;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}