:root {
  --paper: #fffaf0;
  --ink: #18211d;
  --muted: #68736a;
  --line: rgba(24, 33, 29, 0.12);
  --green: #0f9f73;
  --green-dark: #0b3328;
  --blue: #3978f2;
  --orange: #f29a35;
  --pink: #e85d87;
  --cream: #f6f0e6;
  --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 12% 10%, rgba(242, 154, 53, 0.18), transparent 30rem),
    radial-gradient(circle at 90% 8%, rgba(57, 120, 242, 0.14), transparent 34rem),
    linear-gradient(135deg, #f0f5ea 0%, #fff8e8 55%, #eff1e7 100%);
  overflow-x: hidden;
}

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

.page > *,
.demo-shell,
.stage,
.parent-frame,
.with-sidebar,
.sidebar-card,
.content-card,
.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, 4.8vw, 56px);
  line-height: 1.18;
  letter-spacing: -0.06em;
}

.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,
.sidebar-card p,
.content-card p,
.takeaway p {
  word-break: auto-phrase;
}

.demo-shell {
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: 30px;
  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 var(--line);
}

.demo-head span,
.frame-label span,
.card-label {
  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;
}

.width-control {
  display: grid;
  gap: 8px;
  min-width: 260px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.62);
}

.width-control input {
  accent-color: var(--green);
}

.stage {
  --parent-width: 900px;
  display: grid;
  gap: 18px;
  padding: 24px;
  background:
    linear-gradient(rgba(24, 33, 29, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 33, 29, 0.055) 1px, transparent 1px),
    var(--paper);
  background-size: 34px 34px;
}

.parent-frame {
  width: min(var(--parent-width), 100%);
  margin-inline: auto;
  padding: 18px;
  border: 1px dashed rgba(24, 33, 29, 0.22);
  border-radius: 26px;
  background: rgba(255, 250, 240, 0.72);
  transition: width 180ms ease;
}

.frame-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.frame-label strong {
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.with-sidebar {
  display: flex;
  flex-direction: row-reverse;
  flex-wrap: wrap;
  gap: 20px;
}

.sidebar {
  flex-basis: 220px;
  flex-grow: 1;
}

.content {
  flex-basis: 0;
  flex-grow: 999;
  min-inline-size: 60%;
}

.sidebar-card,
.content-card {
  display: grid;
  align-content: start;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 16px 44px rgba(42, 52, 39, 0.1);
}

.sidebar-card {
  gap: 14px;
  padding: 22px;
  color: #f4fff9;
  background:
    radial-gradient(circle at 90% 14%, rgba(255, 255, 255, 0.16), transparent 9rem),
    linear-gradient(135deg, #0b3328, var(--green));
}

.content-card {
  gap: 16px;
  padding: 24px;
  background:
    radial-gradient(circle at 92% 12%, rgba(57, 120, 242, 0.1), transparent 12rem),
    rgba(255, 255, 255, 0.82);
}

.card-label {
  display: inline-flex;
  width: fit-content;
  padding: 7px 10px;
  border-radius: 999px;
  color: var(--green-dark);
  background: rgba(255, 255, 255, 0.76);
}

.content-card .card-label {
  color: var(--blue);
  background: rgba(57, 120, 242, 0.12);
}

.sidebar-card h2,
.content-card h2 {
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.06;
  letter-spacing: -0.055em;
}

.sidebar-card p,
.content-card p {
  color: rgba(24, 33, 29, 0.72);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.75;
}

.sidebar-card p {
  color: rgba(255, 255, 255, 0.78);
}

.sidebar-card ul {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.sidebar-card li,
.note-grid span {
  border-radius: 999px;
  font-size: 13px;
  font-weight: 900;
}

.sidebar-card li {
  padding: 9px 12px;
  color: var(--green-dark);
  background: rgba(255, 255, 255, 0.86);
}

.note-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.note-grid span {
  padding: 10px 12px;
}

.note-grid span:nth-child(1) {
  color: #174fc4;
  background: rgba(57, 120, 242, 0.14);
}

.note-grid span:nth-child(2) {
  color: #0b7a58;
  background: rgba(15, 159, 115, 0.14);
}

.note-grid span:nth-child(3) {
  color: #c34d74;
  background: rgba(232, 93, 135, 0.14);
}

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

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

.takeaway {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-top: 22px;
  padding: 15px 18px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 250, 240, 0.72);
}

.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: 800;
  line-height: 1.7;
}

@media (max-width: 760px) {
  .page {
    width: min(100% - 28px, 1220px);
    padding: 24px 0;
  }

  .demo-head {
    align-items: stretch;
    flex-direction: column;
  }

  .width-control {
    min-width: 0;
  }

  .stage {
    padding: 14px;
  }

  .parent-frame {
    padding: 14px;
    border-radius: 22px;
  }
}