:root {
  --paper: #fffaf3;
  --paper-2: #f7efe3;
  --ink: #1f211d;
  --muted: #716b61;
  --line: #e3d7c8;
  --green: #0c9b72;
  --green-dark: #0b3c30;
  --blue: #3978f2;
  --orange: #ec8b34;
  --pink: #e85d87;
  --shadow: 0 28px 70px rgba(76, 55, 25, 0.15);
  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 16% 8%, rgba(57, 120, 242, 0.16), transparent 32rem),
    radial-gradient(circle at 84% 12%, rgba(12, 155, 114, 0.18), transparent 30rem),
    linear-gradient(135deg, #fbf1e7 0%, #fffaf3 50%, #eee8dc 100%);
  overflow-x: hidden;
}

button,
code {
  font: inherit;
}

.page {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 30px 0;
}

.hero {
  margin-bottom: 24px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  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: "";
}

.eyebrow--small {
  margin-bottom: 12px;
  font-size: 11px;
}

.hero__grid {
  display: grid;
  display: block;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 30px;
  align-items: end;
}

.hero__grid > * {
  min-width: 0;
}

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

h1 {
  /* max-width: 760px; */
  font-size: clamp(32px, 5.2vw, 52px);
  line-height: 1.2;
  /* letter-spacing: -0.075em; */
  overflow-wrap: anywhere;
}

.lead {
  /* max-width: 760px; */
  margin-top: 16px;
  color: var(--muted);
  font-size: clamp(16px, 1.7vw, 20px);
  /* font-weight: 800; */
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.axis-card {
  position: relative;
  min-height: 190px;
  border: 1px solid rgba(31, 33, 29, 0.1);
  border-radius: 28px;
  background: rgba(255, 250, 243, 0.82);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.axis-card::before {
  position: absolute;
  inset: 24px;
  border-radius: 20px;
  background-image:
    linear-gradient(rgba(31, 33, 29, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 33, 29, 0.08) 1px, transparent 1px);
  background-size: 34px 34px;
  content: "";
}

.axis-card__line {
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.03em;
}

.axis-card__caption {
  position: absolute;
  top: 18px;
  left: 24px;
  z-index: 1;
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.axis-card__line--inline {
  right: 28px;
  bottom: 38px;
  width: 212px;
  height: 34px;
  background: var(--blue);
}

.axis-card__line--block {
  top: 30px;
  left: 36px;
  width: 34px;
  height: 132px;
  writing-mode: vertical-rl;
  background: var(--green);
}

.axis-card__dot {
  position: absolute;
  right: 108px;
  bottom: 86px;
  width: 34px;
  height: 34px;
  border: 8px solid #fff;
  border-radius: 999px;
  background: var(--orange);
  box-shadow: 0 16px 28px rgba(31, 33, 29, 0.18);
}

.lab {
  padding: 18px;
  border: 1px solid rgba(31, 33, 29, 0.1);
  border-radius: 32px;
  background: rgba(255, 250, 243, 0.74);
  box-shadow: var(--shadow);
}

.lab-note {
  margin: 14px 6px 2px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.65;
}

.stage {
  --track-cols: repeat(2, 170px);
  --track-rows: repeat(2, 120px);
  --track-gap: 20px;
  --track-pad: 34px;
  display: grid;
  grid-template-columns: 430px minmax(0, 1fr);
  gap: 18px;
}

.panel {
  display: grid;
  align-content: start;
  gap: 16px;
  padding: 22px;
  border-radius: 24px;
  color: #eef8f1;
  background: var(--green-dark);
}

.panel__group {
  display: grid;
  gap: 10px;
}

.panel__group + .panel__group {
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.panel__title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 21px;
  line-height: 1;
  letter-spacing: -0.04em;
}

.panel__title span {
  color: rgba(238, 248, 241, 0.6);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.control {
  display: grid;
  grid-template-columns: 62px 1fr;
  align-items: center;
  gap: 8px;
}

.control__label {
  color: rgba(238, 248, 241, 0.72);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.control__options {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.opt {
  border: 0;
  border-radius: 999px;
  padding: 6px 10px;
  color: rgba(238, 248, 241, 0.85);
  background: rgba(255, 255, 255, 0.09);
  font-size: 11.5px;
  font-weight: 800;
  cursor: pointer;
  transition:
    background 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.opt:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.18);
}

.opt.is-active {
  color: var(--green-dark);
  background: #d9f5e9;
}

.opt--unset {
  background: transparent;
  box-shadow: inset 0 0 0 1.5px rgba(255, 255, 255, 0.28);
}

.opt--unset:hover {
  background: rgba(255, 255, 255, 0.1);
}

.opt--unset.is-active {
  color: var(--green-dark);
  background: #d9f5e9;
  box-shadow: none;
}

.place-toggle {
  display: flex;
  align-items: center;
  gap: 9px;
  color: rgba(238, 248, 241, 0.85);
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
}

.place-toggle input {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: #4cd6a5;
  cursor: pointer;
}

.code-out {
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.24);
  overflow: auto;
}

.code-out code {
  color: #f7fff9;
  font: 800 13px/1.7 "SFMono-Regular", Consolas, monospace;
  white-space: pre;
}

.grid-demo {
  position: relative;
  display: grid;
  grid-template-columns: var(--track-cols);
  grid-template-rows: var(--track-rows);
  gap: var(--track-gap);
  min-height: 460px;
  padding: var(--track-pad);
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(rgba(31, 33, 29, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 33, 29, 0.05) 1px, transparent 1px),
    #fffdf8;
  background-size: 34px 34px;
  overflow: hidden;
}

.grid-ghost {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: grid;
  grid-template-columns: var(--track-cols);
  grid-template-rows: var(--track-rows);
  gap: var(--track-gap);
  padding: var(--track-pad);
  pointer-events: none;
}

.ghost-cell {
  border: 1.5px dashed rgba(31, 33, 29, 0.24);
  border-radius: 18px;
  background: rgba(244, 239, 230, 0.6);
  transform-origin: 0 0;
}

.item {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  min-width: 78px;
  min-height: 54px;
  border-radius: 16px;
  color: #fff;
  font-size: 24px;
  font-weight: 900;
  box-shadow: 0 18px 30px rgba(31, 33, 29, 0.16);
  transform-origin: 0 0;
}

.item--a {
  background: var(--blue);
}

.item--b {
  min-width: 104px;
  min-height: 64px;
  background: var(--orange);
}

.item--c {
  min-height: 76px;
  background: var(--pink);
}

.item--d {
  min-width: 96px;
  background: var(--green);
}

.item__tag {
  position: absolute;
  top: -12px;
  right: -12px;
  padding: 4px 8px;
  border-radius: 999px;
  color: #fff;
  background: var(--ink);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.06em;
  opacity: 0;
  transform: scale(0.8);
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.item--c.is-self {
  outline: 3px dashed var(--pink);
  outline-offset: 4px;
}

.item--c.is-self .item__tag {
  opacity: 1;
  transform: none;
}

.content-check {
  margin-top: 18px;
  padding: 24px;
  border: 1px solid rgba(31, 33, 29, 0.1);
  border-radius: 32px;
  background: rgba(255, 250, 243, 0.74);
  box-shadow: var(--shadow);
}

.section-heading {
  display: grid;
  gap: 10px;
  /* max-width: 840px; */
  margin-bottom: 18px;
}

.section-heading h2 {
  font-size: clamp(28px, 3.4vw, 38px);
  line-height: 1.05;
  letter-spacing: -0.055em;
}

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

.compare-three {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.mini-demo {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fffdf8;
}

.mini-demo__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-weight: 900;
}

.mini-demo__head span {
  font-size: 14px;
}

.mini-demo__head strong {
  padding: 5px 9px;
  border-radius: 999px;
  color: #b53631;
  background: #fff0ec;
  font-size: 12px;
}

.mini-demo--works .mini-demo__head strong {
  color: #087453;
  background: #e3f8ed;
}

.mini-box {
  height: 180px;
  border-radius: 18px;
  background:
    linear-gradient(rgba(31, 33, 29, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 33, 29, 0.06) 1px, transparent 1px),
    var(--paper-2);
  background-size: 28px 28px;
}

.mini-box span {
  display: grid;
  place-items: center;
  width: 54px;
  height: 44px;
  border-radius: 13px;
  color: #fff;
  background: var(--blue);
  font-weight: 900;
}

.mini-box span:nth-child(2) {
  background: var(--orange);
}

.mini-box span:nth-child(3) {
  background: var(--pink);
}

.mini-box span:nth-child(4) {
  background: var(--green);
}

.mini-box--flex-nowrap {
  display: flex;
  flex-wrap: nowrap;
  gap: 10px;
  align-content: end;
  align-items: start;
  padding: 14px;
}

.mini-box--flex-wrap-one {
  display: flex;
  flex-wrap: wrap;
  align-content: end;
  align-items: start;
  gap: 10px;
  padding: 14px;
}

.mini-box--grid {
  display: grid;
  grid-template-columns: repeat(2, 64px);
  grid-template-rows: repeat(2, 48px);
  align-content: end;
  justify-content: start;
  gap: 10px;
  padding: 14px;
}

.mini-demo code {
  display: block;
  padding: 12px;
  border-radius: 14px;
  color: #eaf8ef;
  background: var(--green-dark);
  font: 800 12px/1.6 "SFMono-Regular", Consolas, monospace;
}

.cheat-sheet {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.cheat-sheet div {
  padding: 16px;
  border: 1px solid rgba(31, 33, 29, 0.1);
  border-radius: 20px;
  background: rgba(255, 250, 243, 0.84);
}

.cheat-sheet span {
  display: block;
  margin-bottom: 4px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.cheat-sheet p {
  color: var(--ink);
  font-size: 18px;
  font-weight: 900;
}

@media (max-width: 960px) {
  .page {
    width: min(100% - 28px, 720px);
  }

  .hero__grid,
  .stage,
  .compare-three,
  .cheat-sheet {
    grid-template-columns: 1fr;
  }

  .axis-card {
    min-height: 180px;
  }

  .grid-demo {
    min-height: 420px;
  }
}

@media (max-width: 560px) {
  .page {
    width: min(100% - 20px, 430px);
    padding: 24px 0;
  }

  h1 {
    font-size: clamp(38px, 12.5vw, 50px);
    letter-spacing: -0.08em;
  }

  .lead {
    font-size: 15px;
  }

  .axis-card__caption {
    left: 18px;
    font-size: 10px;
  }

  .axis-card__line--inline {
    left: 128px;
    right: 42px;
    width: auto;
    font-size: 10px;
  }

  .axis-card__line--block {
    left: 24px;
    font-size: 10px;
  }

  .axis-card__dot {
    right: 78px;
  }

  .lab,
  .content-check {
    padding: 14px;
    border-radius: 24px;
  }

  .stage {
    --track-cols: repeat(2, 120px);
    --track-rows: repeat(2, 100px);
    --track-gap: 12px;
    --track-pad: 18px;
  }

  .panel {
    padding: 16px;
  }

  .control {
    grid-template-columns: 54px 1fr;
  }

  .opt {
    padding: 5px 8px;
    font-size: 10.5px;
  }

  .code-out code {
    font-size: 12px;
  }

  .grid-demo {
    min-height: 380px;
  }

  .item {
    min-width: 64px;
    min-height: 44px;
    font-size: 20px;
  }

  .item--b {
    min-width: 84px;
    min-height: 56px;
  }

  .item--c {
    min-height: 64px;
  }

  .item--d {
    min-width: 78px;
  }
}