:root {
  --paper: #fffaf0;
  --paper-soft: #f7f1e5;
  --ink: #17211c;
  --muted: #6f766f;
  --line: #ddd9ca;
  --green: #0f9f73;
  --green-dark: #0b3328;
  --blue: #3978f2;
  --orange: #f29a35;
  --shadow: 0 28px 80px rgba(42, 52, 39, 0.16);
  color-scheme: light;
  font-family: "Avenir Next", "Hiragino Sans", "Yu Gothic", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 10%, rgba(57, 120, 242, 0.16), transparent 32rem),
    radial-gradient(circle at 86% 12%, rgba(15, 159, 115, 0.18), transparent 34rem),
    linear-gradient(135deg, #eef4ec 0%, #fff8e8 54%, #ecefe5 100%);
  overflow-x: hidden;
}

.page {
  width: min(1220px, calc(100% - 48px));
  margin: 0 auto;
  padding: 38px 0;
}

.page > *,
.demo-shell,
.scroller,
.panel,
.takeaway {
  min-width: 0;
  max-width: 100%;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.eyebrow::before {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: currentColor;
  box-shadow: 2px 2px 0 var(--orange);
  content: "";
}

h1,
h2,
p,
pre {
  margin: 0;
}

h1 {
  font-size: clamp(32px, 5vw, 64px);
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.lead {
  margin-top: 18px;
  color: var(--muted);
  font-size: clamp(16px, 1.7vw,18px);
  font-weight: 700;
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.lead,
.panel p,
.takeaway p {
  word-break: auto-phrase;
}

.demo-shell {
  margin-top: 28px;
  border: 1px solid rgba(23, 33, 28, 0.1);
  border-radius: 34px;
  background: rgba(255, 250, 240, 0.78);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.demo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px;
  border-bottom: 1px solid rgba(23, 33, 28, 0.1);
}

.demo-head span,
.legend span {
  color: var(--green);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.demo-head strong {
  display: block;
  margin-top: 4px;
  font-size: 20px;
  letter-spacing: -0.04em;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.legend span {
  padding: 8px 10px;
  border-radius: 999px;
  background: #e4f7ec;
}

.legend .legend-view {
  color: #244fba;
  background: #e8efff;
}

.scroller {
  height: 680px;
  overflow: auto;
  scroll-timeline: --container-progress block;
  background:
    linear-gradient(rgba(23, 33, 28, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 33, 28, 0.055) 1px, transparent 1px),
    var(--paper);
  background-size: 34px 34px;
}

.sticky-progress {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  padding: 16px 22px;
  background: rgba(255, 250, 240, 0.88);
  border-bottom: 1px solid rgba(23, 33, 28, 0.1);
  backdrop-filter: blur(18px);
}

.sticky-progress span {
  color: var(--green);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.sticky-progress strong {
  display: block;
  margin-top: 2px;
  font-size: 15px;
}

.progress-track {
  height: 16px;
  border-radius: 999px;
  background: rgba(11, 51, 40, 0.1);
  overflow: hidden;
}

.progress-track span,
.scroll-rail span {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green), var(--orange));
  transform-origin: left;
  animation: grow-progress linear both;
  animation-timeline: --container-progress;
}

.comparison {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 18px;
  min-height: 1060px;
  padding: 26px;
}

.panel {
  min-width: 0;
  border: 1px solid rgba(23, 33, 28, 0.1);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.62);
}

.panel-copy {
  display: grid;
  gap: 12px;
  padding: 24px;
}

.chip {
  width: fit-content;
  padding: 8px 11px;
  border-radius: 999px;
  color: #fff;
  background: var(--green-dark);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.panel--view .chip {
  background: var(--blue);
}

.panel h2 {
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.panel p {
  color: var(--muted);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.75;
}

.scroll-rail {
  height: 18px;
  margin: 8px 24px 24px;
  border-radius: 999px;
  background: rgba(11, 51, 40, 0.1);
  overflow: hidden;
}

.panel--scroll {
  position: sticky;
  top: 86px;
  align-self: start;
}

.view-list {
  display: grid;
  gap: 220px;
  padding: 40px 24px 360px;
}

.view-card {
  padding: 26px;
  border-radius: 26px;
  color: #fff;
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.18), transparent 10rem),
    linear-gradient(135deg, #193fe0, #3978f2);
  box-shadow: 0 22px 60px rgba(57, 120, 242, 0.22);
  animation: view-enter linear both;
  animation-timeline: view(block);
  animation-range: entry 0% cover 64%;
}

.view-card:nth-child(2) {
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.18), transparent 10rem),
    linear-gradient(135deg, #0b3328, #0f9f73);
}

.view-card:nth-child(3) {
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.2), transparent 10rem),
    linear-gradient(135deg, #a85211, #f29a35);
}

.view-card span {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 28px;
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.86);
  font-weight: 900;
}

.view-card strong {
  display: block;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.view-card p {
  max-width: 420px;
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.78);
}

.code-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 0 26px 28px;
}

.code-compare pre {
  padding: 18px;
  border-radius: 20px;
  color: #ecfff4;
  background: var(--green-dark);
  overflow: auto;
}

.code-compare pre:nth-child(2) {
  background: #17347f;
}

.code-compare code {
  font: 800 13px/1.65 "SFMono-Regular", Consolas, monospace;
}

.takeaway {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-top: 22px;
  padding: 18px 20px;
  border: 1px solid rgba(23, 33, 28, 0.1);
  border-radius: 24px;
  background: rgba(255, 250, 240, 0.82);
  box-shadow: var(--shadow);
}

.takeaway span {
  flex: 0 0 auto;
  padding: 8px 12px;
  border-radius: 999px;
  color: #fff;
  background: var(--green-dark);
  font-size: 12px;
  font-weight: 900;
}

.takeaway p {
  color: var(--muted);
  font-size: 14px;
  font-weight: 900;
  line-height: 1.7;
}

@keyframes grow-progress {
  from {
    scale: 0 1;
  }

  to {
    scale: 1 1;
  }
}

@keyframes view-enter {
  from {
    opacity: 0;
    translate: 0 80px;
    scale: 0.9;
    filter: blur(12px);
  }

  to {
    opacity: 1;
    translate: 0 0;
    scale: 1;
    filter: blur(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .progress-track span,
  .scroll-rail span,
  .view-card {
    animation: none;
  }
}

@media (max-width: 900px) {
  .page {
    width: min(100% - 28px, 720px);
    padding: 28px 0;
  }

  .demo-head,
  .takeaway {
    align-items: flex-start;
    flex-direction: column;
  }

  .sticky-progress,
  .comparison,
  .code-compare {
    grid-template-columns: 1fr;
  }

  .panel--scroll {
    position: relative;
    top: auto;
  }

  .comparison {
    min-height: auto;
  }

  .view-list {
    gap: 120px;
    padding-bottom: 220px;
  }
}

@media (max-width: 560px) {
  .page {
    width: min(100% - 20px, 430px);
  }

  h1 {
  }

  .lead {
    font-size: 15px;
  }

  .scroller {
    height: 620px;
  }

  .comparison,
  .code-compare {
    padding-inline: 14px;
  }

  .demo-head,
  .sticky-progress,
  .panel-copy,
  .takeaway {
    padding-inline: 14px;
  }

  .sticky-progress {
    padding-inline: 14px;
  }
}