@font-face {
  font-family: Inter;
  src: url("fonts/inter-variable.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

@font-face {
  font-family: mini-wakuwaku;
  src: url("fonts/mini-wakuwaku.otf") format("opentype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "M PLUS Code Latin";
  src: url("fonts/m-plus-code-latin-regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "M PLUS Code Latin";
  src: url("fonts/m-plus-code-latin-bold.woff2") format("woff2");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

@keyframes full-rotation {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(1turn);
  }
}

/* Reset */

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

body,
h1,
h2,
h3,
p {
  margin: 0;
}

img {
  max-width: 100%;
}

/* Base and design tokens */

:root {
  color-scheme: dark;

  /* Color inventory: literals live here; component rules use variables. */

  /* Core palette */
  --transparent: transparent;
  --white: #fff;
  --black: #000;
  --page: #09080c;
  --surface: #111015;
  --ink: #f6f3fa;
  --muted: #aaa6b4;
  --quiet: #8c8799;
  --line: #ffffff16;
  --pink: #ee9bdd;
  --purple: #b6a0f5;
  --mint: #a2d4bc;

  /* Site and hero palette */
  --selection-bg: #a660c9;
  --gradient-purple: #bca1fc;
  --gradient-pink: #f09fda;
  --gradient-peach: #ffbda5;
  --header-bg: #0d0c10e8;
  --nav-text: #bcb7c6;
  --hero-glow-pink: #d442851f;
  --hero-glow-purple: #754ce52b;
  --hero-copy: #bdb8c8;
  --target-text: #bbb6c6;
  --closing-bg: #100c15;

  /* Buttons and controls */
  --button-light-bg: #eeeaf3;
  --button-light-text: #1a1520;
  --button-gradient-start: #bc83e9;
  --button-gradient-middle: #e28ad3;
  --button-gradient-end: #f49dab;
  --button-primary-text: #24122c;
  --button-highlight: #ffffff45;
  --button-shadow: #b657cc1b;
  --button-shadow-hover: #b657cc42;
  --rainbow-inner: #202020;
  --rainbow-blue: rgb(0 145 255);
  --rainbow-red: rgb(255 2 91);
  --rainbow-yellow: rgb(247 243 8);
  --rainbow-green: rgb(0 255 55);
  --rainbow-violet: rgb(102 71 240);
  --button-quiet-border: #ffffff20;
  --button-quiet-bg: #ffffff03;
  --button-quiet-text: #bcb6c8;
  --soon-border: #fff2;

  /* Feature palette */
  --feature-border: #ffffff19;
  --feature-bg-start: #19141f;
  --feature-border-hover: #b596c951;
  --feature-heading: #c5b0da;
  --feature-icon-border: #c29bf32b;
  --feature-icon-bg: #af83e31a;
  --feature-icon-text: #c3a6e8;
  --feature-number: #8b7e98;
  --assembly-glow: #a55fe019;
  --chip-border: #c297e138;
  --instruction-bg-start: #2b203b;
  --instruction-bg-end: #17121e;
  --instruction-text: #dec0f4;
  --shadow-soft: #0003;
  --chip-caption: #b59dcc;
  --binary-bg-start: #362033;
  --binary-bg-end: #1c131d;
  --binary-text: #f0b5d3;
  --conversion-arrow: #9d7ab9;

  /* Investigation palette */
  --card-footer-text: #b7a8c6;
  --investigate-bg-start: #1f141c;
  --investigate-icon-bg: #ee86bb16;
  --investigate-icon-text: #e4a3c7;
  --investigate-heading: #d7aec6;
  --hex-text: #756577;
  --hex-highlight-border: #d69aba42;
  --hex-highlight-bg: #d787b51a;
  --hex-highlight-text: #e0a7c8;
  --hex-secondary-text: #e9b4d5;
  --annotation-border: #c393bc38;
  --annotation-bg: #261a2b;
  --shadow-medium: #0004;
  --annotation-text: #d2b0d1;

  /* Verification palette */
  --verify-glow: #406e6614;
  --verify-heading: #acd3bd;
  --verify-icon-bg: #74ad9713;
  --verify-icon-border: #a2d4bc26;
  --roundtrip-label: #a6bdb1;
  --roundtrip-node-border: #88af9c32;
  --roundtrip-node-bg-start: #1e2d29;
  --roundtrip-node-bg-end: #151a19;
  --roundtrip-node-text: #b1d6c2;
  --roundtrip-arrow: #88a294;
  --verified-border: #86b59a29;
  --verified-bg: #a7d9bb06;
  --verified-text: #a7ceb6;

  /* Editor, closing, and footer palette */
  --check-list-text: #c8c0d2;
  --text-link: #d2b9e8;
  --fine-print: #93899e;
  --panel-accent-border: #9b76b542;
  --editor-glow: #82409217;
  --panel-deep-bg: #131017;
  --panel-shadow: #57338615;
  --closing-glow-purple: #894ca83b;
  --closing-glow-pink: #e15e8121;
  --closing-copy: #b5a5be;
  --closing-note-text: #ac91ba;
  --closing-note-accent: #c292d5;
  --footer-copy: #94859f;
  --copyright-text: #8e8097;

  /* Interactive and showcase palette */
  --footer-nav: #b1a2bb;
  --interactive-border: #b6a0f580;
  --interactive-bg-purple: #b6a0f518;
  --interactive-bg-pink: #ee9bdd09;
  --showcase-glow: #82409224;

  /* Documentation and syntax palette */
  --dashed-border: #ffffff30;
  --docs-line-color: #ffffff24;
  --docs-panel-color: #15131b;
  --docs-link-color: #d2baff;
  --docs-hover-bg: #fff1;
  --docs-code-block-bg: #17151d;
  --docs-inline-code-bg: #ffffff14;
  --syntax-comment: #9ba5b9;
  --syntax-keyword: #dcb2ff;
  --syntax-string: #b8e5b4;
  --syntax-number: #ffd19c;
  --syntax-function: #9ccaff;
  --syntax-variable: #8cdbdf;
  --syntax-operator: #f4a6c9;
  --syntax-punctuation: #bcb7c8;
  --docs-copy-bg: #24202c;
  --docs-selection-bg: #77549c80;
  --docs-control-bg: #30263e;
  --docs-range-accent: #c59bff;

  /* Forced-color system tokens */
  --forced-canvas-text: CanvasText;
  --forced-button-text: ButtonText;

  /* Typography */
  --body-font: "Inter", -apple-system, roboto, helvetica, sans-serif;
  --display-font: "mini-wakuwaku", "Arial Rounded MT Bold", sans-serif;
  --code-font: "M PLUS Code Latin", ui-monospace, monospace;

  /* Shared layout and interaction values */
  --content-width: 1120px;
  --content-gutter: 80px;
  --content-gutter-tablet: 56px;
  --content-gutter-mobile: 40px;
  --content-gutter-small: 28px;
  --radius-tight: 3px;
  --radius-xs: 4px;
  --radius-sm: 5px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-pill: 50px;
  --transition-fast: 180ms ease;
  --transition-standard: 220ms ease;
  --header-z: 5;
  --border-default: 1px solid var(--line);
  --panel-accent-border-value: 1px solid var(--panel-accent-border);
  --panel-shadow-value: 0 12px 70px var(--panel-shadow);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  min-width: 320px;
  background: var(--page);
  color: var(--ink);
  font-family: var(--body-font);
  font-size: 16px;
  font-optical-sizing: none;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--selection-bg);
  color: var(--white);
}

a {
  -webkit-tap-highlight-color: var(--transparent);
  color: inherit;
  text-decoration: none;
}

summary {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--pink);
  outline-offset: 6px;
  border-radius: var(--radius-xs);
}

h1,
h2,
h3 {
  font-family: var(--display-font);
  font-weight: 400;
  text-wrap: balance;
}

.pink {
  color: var(--pink);
}

.purple {
  color: var(--purple);
}

.eyebrow {
  font-family: var(--code-font);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.13em;
  line-height: 1.5;
}

.heading-line {
  display: block;
}

.gradient-text {
  background: linear-gradient(
    105deg,
    var(--gradient-purple) 10%,
    var(--gradient-pink) 60%,
    var(--gradient-peach) 95%
  );
  background-clip: text;
  -webkit-text-fill-color: var(--transparent);

  /* Glyphs extend beyond the advance box in this playful display face. */
  padding: 0.06em 0.05em;
  margin: -0.06em -0.05em;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 1rem;
  left: 1rem;
  padding: 0.6rem 1rem;
  transform: translateY(-200%);
  background: var(--ink);
  color: var(--page);

  &:focus {
    transform: translateY(0);
  }
}

/* Layout */

.shell,
.section-shell {
  width: min(var(--content-width), calc(100% - var(--content-gutter)));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--header-z);
  border-bottom: var(--border-default);
  background: var(--header-bg);
  backdrop-filter: blur(20px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 8px 0;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-left: auto;
  margin-right: 2rem;
  font-size: 14px;
  color: var(--nav-text);

  & a {
    transition: color var(--transition-fast);

    &:hover {
      color: var(--ink);
    }
  }
}

.hero {
  position: relative;
  isolation: isolate;
  text-align: center;
}

.hero-glow {
  position: absolute;
  z-index: -1;
  inset: 140px 0 160px;
  pointer-events: none;
  mask-image: linear-gradient(
    var(--transparent),
    var(--black) 20%,
    var(--black) 70%,
    var(--transparent)
  );
  background:
    radial-gradient(ellipse at 65% 62%, var(--hero-glow-pink), var(--transparent) 47%),
    radial-gradient(ellipse at 30% 72%, var(--hero-glow-purple), var(--transparent) 49%);
  animation: glow-arrive 2.8s ease-out both;
}

.hero-title {
  position: relative;
  margin-top: 26px;
  font-size: clamp(35px, 5.8vw, 76px);
  line-height: 1.28;
  letter-spacing: -0.05em;
  animation: arrive 800ms ease-out both;

  & .hero-line-two {
    margin-top: 1px;
  }
}

.hero-copy {
  max-width: 640px;
  margin: 25px auto 0;
  font-size: 17px;
  line-height: 1.7;
  color: var(--hero-copy);
}

.hero-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 15px;
  margin-top: 28px;
}

.hero-note {
  margin-top: 17px;
  color: var(--quiet);
  font-size: 11px;
}

.workspace-wrap {
  position: relative;
  width: min(950px, 100%);
  margin: 63px auto 0;
  text-align: left;
}

.target-strip {
  padding: 55px 0 48px;
  border-bottom: var(--border-default);

  & > .eyebrow {
    color: var(--quiet);
    font-size: 9px;
  }

  & ul {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px 45px;
    margin: 19px 0 0;
    padding: 0;
    list-style: none;
    color: var(--target-text);
    font-family: var(--code-font);
    font-size: 17px;
    font-weight: 700;
  }
}

.features {
  padding-top: 105px;
}

.section-intro {
  text-align: center;

  & > p {
    &:last-child {
      margin: 22px auto 0;
      color: var(--muted);
      font-size: 15px;
    }
  }
}

.section-title {
  margin-top: 20px;
  font-size: clamp(32px, 4.5vw, 54px);
  line-height: 1.25;
  letter-spacing: -0.04em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 47px;
}

.editor-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 75px;
  padding-block: 127px 120px;
}

.closing-section {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 64px 30px 70px;
  text-align: center;
  border: var(--border-default);
  border-radius: 22px;
  background: var(--closing-bg);

  & .section-title {
    margin-top: 20px;
    font-size: 49px;
  }

  & p {
    margin: 23px auto 27px;
    color: var(--closing-copy);
    font-size: 13px;
  }
}

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 25px;
  padding-block: 47px 40px;
}

/* Components */

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  white-space: nowrap;
  line-height: 1;

  & .brand-name {
    font-size: 28px;
    letter-spacing: -0.075em;
  }

  & .brand-name-japanese {
    font-size: 28px;
    letter-spacing: -0.25em;
  }

  & .brand-name-divider {
    font-size: 24px;
    color: var(--muted);
  }
}

.brand-name,
.brand-name-japanese,
.brand-name-divider {
  font-family: var(--display-font);
  font-weight: 400;
}

.inline-brand {
  white-space: nowrap;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -0.06em;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 8px 12px;
  border: 1px solid var(--transparent);
  border-radius: var(--radius-lg);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast);

  &.button-small {
    padding: 8px 12px;
    font-size: 14px;
    gap: 18px;
    border-radius: var(--radius-md);
  }

  &.button-light {
    background: var(--button-light-bg);
    color: var(--button-light-text);

    &:hover {
      background: var(--white);
    }
  }

  &.button-primary {
    background: linear-gradient(
      110deg,
      var(--button-gradient-start),
      var(--button-gradient-middle) 55%,
      var(--button-gradient-end)
    );
    color: var(--button-primary-text);
    position: relative;
    box-shadow:
      inset 0 1px 0 var(--button-highlight),
      0 3px 28px var(--button-shadow);

    &:hover {
      box-shadow:
        inset 0 1px 0 var(--button-highlight),
        0 5px 32px var(--button-shadow-hover);

      & .rainbow-highlight {
        inset: -5px;
        opacity: 1;
      }

      & .button-text {
        color: var(--white);
        z-index: 9;
      }
    }

    & .rainbow-highlight {
      position: absolute;
      inset: 0;
      z-index: 1;
      overflow: hidden;
      border-radius: var(--radius-lg);
      opacity: 0;
      transition:
        opacity 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        inset 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);

      &::before {
        content: "";
        position: absolute;
        inset: 2px;
        z-index: 2;
        border-radius: var(--radius-lg);
        background: var(--white);
        filter: blur(1px);
      }

      &::after {
        box-sizing: border-box;
        content: "";
        position: absolute;
        inset: 4px;
        z-index: 3;
        border-radius: var(--radius-lg);
        background: var(--rainbow-inner);
      }
    }

    & .rainbow-gradient {
      position: absolute;
      z-index: 1;
      background: conic-gradient(
        var(--rainbow-blue),
        var(--rainbow-red),
        var(--rainbow-yellow),
        var(--rainbow-green),
        var(--rainbow-violet) 1turn
      );
      animation: full-rotation 1.5s linear 0s infinite normal none running;
      inset-block: -200%;
      inset-inline: -25%;
    }
  }

  &.button-quiet {
    border-color: var(--button-quiet-border);
    background: var(--button-quiet-bg);
    color: var(--button-quiet-text);
    gap: 10px;
  }
}

[aria-disabled="true"] {
  cursor: default;

  &:hover {
    transform: none;
  }
}

.soon-label {
  padding: 2px 5px;
  border: 1px solid var(--soon-border);
  border-radius: var(--radius-xs);
  font-family: var(--code-font);
  font-size: 8px;
  font-weight: 400;
  letter-spacing: 0.03em;
}

.feature-card {
  overflow: hidden;
  padding: 30px 32px 0;
  border: 1px solid var(--feature-border);
  border-radius: 15px;
  background: linear-gradient(135deg, var(--feature-bg-start), var(--surface) 65%);
  transition:
    border-color var(--transition-standard),
    transform var(--transition-standard);

  &:hover {
    transform: translateY(-3px);
    border-color: var(--feature-border-hover);
  }

  & h3 {
    margin-top: 23px;
    font-size: clamp(24px, 2.4vw, 31px);
    line-height: 1.4;
    letter-spacing: -0.06em;
  }

  & p {
    max-width: 410px;
    margin-top: 14px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.8;
  }
}

.feature-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--feature-heading);
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--feature-icon-border);
  border-radius: var(--radius-md);
  background: var(--feature-icon-bg);
  color: var(--feature-icon-text);
  font-size: 17px;
}

.feature-number {
  margin-left: auto;
  color: var(--feature-number);
  font-family: var(--code-font);
  font-size: 11px;
}

.assembly-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 31px;
  min-height: 186px;
  background: radial-gradient(ellipse at center, var(--assembly-glow), var(--transparent) 65%);
  font-family: var(--code-font);
}

.instruction-chip,
.binary-chip {
  display: grid;
  place-content: center;
  width: 105px;
  height: 94px;
  border: 1px solid var(--chip-border);
  border-radius: var(--radius-xl);
  background: linear-gradient(150deg, var(--instruction-bg-start), var(--instruction-bg-end));
  color: var(--instruction-text);
  font-size: 35px;
  text-align: center;
  box-shadow: 0 10px 35px var(--shadow-soft);

  & span {
    margin-top: 4px;
    font-size: 7px;
    letter-spacing: 0.1em;
    color: var(--chip-caption);
  }
}

.binary-chip {
  background: linear-gradient(150deg, var(--binary-bg-start), var(--binary-bg-end));
  color: var(--binary-text);
}

.conversion-arrow {
  color: var(--conversion-arrow);
  font-size: 28px;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  padding-block: 16px;
  border-top: var(--border-default);
  color: var(--card-footer-text);
  font-size: 10px;
}

.investigate-card {
  background: linear-gradient(135deg, var(--investigate-bg-start), var(--surface) 65%);

  & .feature-icon {
    background: var(--investigate-icon-bg);
    color: var(--investigate-icon-text);
  }

  & .feature-heading {
    color: var(--investigate-heading);
  }
}

.hex-visual {
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  min-height: 186px;
  padding: 15px 12px 40px;
  font-family: var(--code-font);
  font-size: 20px;
  letter-spacing: 0.07em;
  line-height: 1.9;
  color: var(--hex-text);
  white-space: nowrap;

  & > div {
    & > span {
      padding: 4px 6px;
      border: 1px solid var(--hex-highlight-border);
      border-radius: var(--radius-xs);
      background: var(--hex-highlight-bg);
      color: var(--hex-highlight-text);
    }

    &:nth-child(2) {
      & > span {
        color: var(--hex-secondary-text);
        font-size: 15px;
      }
    }
  }

  & .annotation-chip {
    position: absolute;
    right: 0;
    bottom: 27px;
    padding: 6px 12px;
    border: 1px solid var(--annotation-border);
    border-radius: var(--radius-sm);
    background: var(--annotation-bg);
    box-shadow: 0 5px 22px var(--shadow-medium);
    font-size: 9px;
    letter-spacing: 0;
    color: var(--annotation-text);
    rotate: -3deg;
  }
}

.verify-card {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  align-items: center;
  gap: 35px;
  padding-bottom: 31px;
  background:
    radial-gradient(ellipse at 85% 60%, var(--verify-glow), var(--transparent) 65%), var(--surface);

  & .feature-heading {
    color: var(--verify-heading);
  }

  & .feature-icon {
    background: var(--verify-icon-bg);
    border-color: var(--verify-icon-border);
    color: var(--mint);
  }

  & h3 {
    font-size: 30px;
  }

  & p {
    max-width: 470px;
  }
}

.roundtrip-visual {
  padding: 20px 0 0;
  font-family: var(--code-font);
  text-align: center;
}

.roundtrip-nodes {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;

  & > span {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--roundtrip-label);
    font-size: 8px;
    letter-spacing: 0.1em;

    & b {
      display: grid;
      place-items: center;
      width: 65px;
      height: 66px;
      border: 1px solid var(--roundtrip-node-border);
      border-radius: 10px;
      background: linear-gradient(
        150deg,
        var(--roundtrip-node-bg-start),
        var(--roundtrip-node-bg-end)
      );
      color: var(--roundtrip-node-text);
      font-size: 25px;
      font-weight: 400;
      letter-spacing: -0.1em;
    }
  }

  & i {
    margin-top: -20px;
    color: var(--roundtrip-arrow);
    font-style: normal;
  }
}

.verified-pill {
  display: inline-block;
  margin-top: 23px;
  padding: 7px 14px;
  border: 1px solid var(--verified-border);
  border-radius: var(--radius-pill);
  background: var(--verified-bg);
  color: var(--verified-text);
  font-size: 7px;
  letter-spacing: 0.07em;

  & > span {
    margin-right: 5px;
  }
}

.editor-copy {
  & > p {
    &:not(.eyebrow, .fine-print) {
      margin-top: 22px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.9;
    }
  }

  & .section-title {
    font-size: 43px;
    line-height: 1.3;
  }
}

.check-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 23px 0;
  list-style: none;
  font-size: 12px;
  color: var(--check-list-text);

  & li {
    &::before {
      content: "✓";
      margin-right: 10px;
      color: var(--purple);
    }
  }
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text-link);
  font-size: 12px;
}

.fine-print {
  max-width: 390px;
  margin-top: 18px;
  color: var(--fine-print);
  font-size: 10px;
  line-height: 1.8;
}

.editor-detail {
  position: relative;
  min-width: 0;
  border: var(--panel-accent-border-value);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(ellipse at 85% 65%, var(--editor-glow), var(--transparent) 70%),
    var(--panel-deep-bg);
  box-shadow: var(--panel-shadow-value);
  font-family: var(--code-font);
  rotate: 1deg;
}

.closing-glow {
  position: absolute;
  z-index: -1;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 100%, var(--closing-glow-purple), var(--transparent) 64%),
    radial-gradient(ellipse at 80% 120%, var(--closing-glow-pink), var(--transparent) 65%);
  pointer-events: none;
}

.closing-symbol {
  display: inline-block;
  color: var(--pink);
  font-size: 39px;
  line-height: 1;
}

.closing-note {
  display: block;
  margin-top: 23px;
  color: var(--closing-note-text);
  font-family: var(--code-font);
  font-size: 7px;
  letter-spacing: 0.06em;

  & span {
    padding-inline: 10px;
    color: var(--closing-note-accent);
  }
}

.footer-brand {
  & .brand-name {
    font-size: 27px;
  }

  & p {
    margin-top: 8px;
    color: var(--footer-copy);
    font-size: 10px;
  }
}

.copyright {
  margin-top: 13px;
  color: var(--copyright-text);
  font-size: 9px;
}

.site-footer nav {
  display: flex;
  gap: 25px;
  color: var(--footer-nav);
  font-size: 11px;
}

.showcase-section {
  padding-block: 48px 100px;
  border-top: var(--border-default);
}

.showcase-layout {
  display: grid;
  grid-template-columns: minmax(240px, 0.85fr) minmax(0, 2fr);
  align-items: start;
  gap: 32px;
  margin-top: 46px;
}

.showcase-tabs {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.showcase-tab {
  display: grid;
  gap: 8px;
  width: 100%;
  padding: 20px;
  border: var(--border-default);
  border-radius: var(--radius-xl);
  background: var(--surface);
  color: var(--muted);
  font: 12px/1.65 var(--body-font);
  text-align: left;
  cursor: pointer;

  & .eyebrow {
    color: var(--quiet);
  }

  &:hover,
  &[aria-selected="true"] {
    border-color: var(--interactive-border);
    background:
      linear-gradient(120deg, var(--interactive-bg-purple), var(--interactive-bg-pink)),
      var(--surface);
  }

  &[aria-selected="true"] {
    box-shadow: inset 3px 0 var(--pink);

    & .eyebrow {
      color: var(--pink);
    }
  }

  &:disabled {
    cursor: default;
  }
}

.showcase-tab-title {
  color: var(--ink);
  font-size: 17px;
  font-weight: 600;
}

.showcase-screens {
  min-width: 0;
}

.showcase-panel {
  margin: 0 0 24px;
  overflow: hidden;
  border: var(--panel-accent-border-value);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--panel-shadow-value);

  &[hidden] {
    display: none;
  }

  & figcaption {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    align-items: center;
    padding: 18px 20px;
    border-top: var(--border-default);
    font-size: 12px;
    color: var(--muted);
  }
}

.showcase-image {
  display: grid;
  place-items: center;

  & img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
  }
}

.showcase-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 30px;
  text-align: center;
  color: var(--quiet);
  background:
    radial-gradient(ellipse at 70% 35%, var(--showcase-glow), var(--transparent) 65%),
    var(--panel-deep-bg);

  & strong {
    font: 400 clamp(24px, 3vw, 38px)/1.4 var(--display-font);
    color: var(--ink);
  }

  & > span {
    &:last-child {
      font: 12px/1.5 var(--code-font);
      border: 1px dashed var(--dashed-border);
      border-radius: var(--radius-md);
      padding: 8px 14px;
    }
  }
}

.articles-index {
  padding-block: 70px 100px;
  min-height: 65vh;

  & .docs-lead {
    margin-top: 24px;
  }
}

.article-list {
  list-style: none;
  padding: 0;
  margin: 40px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
  gap: 24px;
}

.article-card {
  display: grid;
  gap: 20px;
  padding: 32px;
  border: var(--border-default);
  border-radius: var(--radius-2xl);
  background: var(--surface);

  &:hover {
    border-color: var(--interactive-border);
  }

  & h2 {
    font: 600 clamp(22px, 3vw, 30px)/1.3 var(--body-font);
    letter-spacing: -0.03em;
  }

  & p {
    color: var(--muted);
  }
}

.article-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 212px;
  gap: 52px;
  padding-block: 32px 80px;
}

.article-back {
  margin-top: 48px;
}

/* Motion */

/* Motion is finite; scroll reveals never hide content before JS initializes. */

[data-reveal].is-revealed {
  animation: arrive 700ms cubic-bezier(0.2, 0.65, 0.3, 1) both;
}

@keyframes arrive {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes glow-arrive {
  from {
    opacity: 0;
    scale: 0.9;
  }

  to {
    opacity: 1;
    scale: 1;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* Responsive */

@media (width <= 1050px) {
  .shell,
  .section-shell {
    width: min(100% - var(--content-gutter-tablet), var(--content-width));
  }

  .main-nav {
    gap: 22px;
    margin-right: 0;
  }

  .hero-title {
    font-size: 5.8vw;
  }

  .target-strip {
    & ul {
      gap: 18px 28px;
      font-size: 15px;
    }
  }

  .feature-card {
    padding-inline: 25px;
  }

  .hex-visual {
    font-size: 17px;
    padding-left: 0;
  }

  .editor-section {
    gap: 35px;
  }

  .editor-copy {
    & .section-title {
      font-size: 35px;
    }
  }

  .verify-card {
    gap: 20px;
  }

  .roundtrip-nodes {
    gap: 12px;
  }
}

@media (width <= 760px) {
  .shell,
  .section-shell {
    width: calc(100% - var(--content-gutter-mobile));
  }

  .header-inner {
    gap: 15px;
    flex-wrap: wrap;
    padding-block: 15px 0;
  }

  .brand {
    & .brand-name {
      font-size: 24px;
    }
  }

  .main-nav {
    flex-wrap: wrap;
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 12px 24px;
    padding: 10px 0 12px;
    border-top: var(--border-default);
    font-size: 11px;
  }

  .header-inner > .button {
    margin-left: auto;
    padding-inline: 10px;
    gap: 10px;
  }

  .hero {
    padding-top: 45px;
  }

  .hero-title {
    font-size: clamp(27px, 6.3vw, 47px);
    letter-spacing: -0.06em;
    line-height: 1.4;
    margin-top: 22px;
  }

  .hero-copy {
    max-width: 430px;
    font-size: 14px;
    margin-top: 20px;
    padding-inline: 10px;
  }

  .hero-actions {
    gap: 10px;
    margin-top: 23px;
  }

  .button {
    min-height: 46px;
    padding: 12px 17px;
    font-size: 11px;
    gap: 13px;
  }

  .hero-note {
    font-size: 10px;
  }

  .workspace-wrap {
    margin-top: 38px;
  }

  .target-strip {
    padding-block: 35px;

    & ul {
      gap: 14px 25px;
      font-size: 13px;
      max-width: 420px;
      margin-inline: auto;
    }
  }

  .features {
    padding-top: 70px;
  }

  .section-title {
    font-size: clamp(28px, 5.5vw, 42px);
  }

  .section-intro {
    & > p {
      &:last-child {
        max-width: 300px;
        font-size: 13px;
        margin-top: 20px;
      }
    }
  }

  .feature-grid {
    grid-template-columns: 1fr;
    margin-top: 30px;
    gap: 15px;
  }

  .feature-card {
    padding: 24px 25px 0;

    & h3 {
      font-size: 29px;
      margin-top: 18px;
    }

    & p {
      max-width: 100%;
      font-size: 13px;
    }
  }

  .assembly-visual {
    min-height: 168px;
  }

  .hex-visual {
    align-items: center;
    font-size: 21px;
    min-height: 175px;

    & .annotation-chip {
      right: 20px;
    }
  }

  .verify-card {
    grid-template-columns: 1fr;
    padding-bottom: 28px;

    & h3 {
      font-size: 28px;
    }
  }

  .roundtrip-visual {
    padding-top: 6px;
  }

  .roundtrip-nodes {
    gap: 25px;
  }

  .editor-section {
    grid-template-columns: 1fr;
    gap: 35px;
    padding-block: 75px;
  }

  .editor-copy {
    & .section-title {
      font-size: 37px;
    }

    & > p {
      &:not(.eyebrow, .fine-print) {
        max-width: 480px;
      }
    }
  }

  .editor-detail {
    max-width: 470px;
    width: calc(100% - 5px);
    margin-inline: auto;
  }

  .closing-section {
    padding: 45px 20px;

    & .section-title {
      font-size: clamp(26px, 5.5vw, 41px);
    }

    & p {
      max-width: 300px;
      font-size: 12px;
    }
  }

  .closing-note {
    font-size: 6px;

    & span {
      padding-inline: 5px;
    }
  }

  .site-footer {
    flex-wrap: wrap;
    gap: 25px;
    padding-block: 33px;
  }

  .copyright {
    order: 3;
    width: 100%;
    margin: 0;
  }

  .site-footer nav {
    gap: 17px;
  }
}

@media (width <= 380px) {
  .shell,
  .section-shell {
    width: calc(100% - var(--content-gutter-small));
  }

  .brand {
    gap: 6px;
  }

  .hero-actions {
    flex-direction: column;

    & .button {
      width: 220px;
    }
  }

  .feature-card {
    & h3 {
      font-size: 25px;
    }
  }

  .roundtrip-nodes {
    gap: 16px;
  }

  .hex-visual {
    font-size: 17px;

    & .annotation-chip {
      right: 0;
      font-size: 8px;
    }
  }

  .closing-note {
    letter-spacing: 0;
  }
}

@media (forced-colors: active) {
  .gradient-text {
    background: none;
    -webkit-text-fill-color: var(--forced-canvas-text);
  }

  .button {
    border: 1px solid var(--forced-button-text);
  }
}

@media (width <= 1100px) {
  .article-shell {
    grid-template-columns: minmax(0, 1fr);
    max-width: 820px;
  }
}

@media (width <= 760px) {
  .showcase-section {
    padding-block: 35px 65px;
  }

  .showcase-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    margin-top: 30px;
  }

  .showcase-tab {
    padding: 16px 20px;
  }

  .showcase-placeholder {
    padding: 20px;
  }

  .article-card {
    padding: 24px;
  }

  .articles-index {
    padding-block: 40px 60px;
  }
}