/*
 * The QuillSail website, in the QuillSail interface style (assets/README.md):
 * ink on paper, hairline rules, and the logo purple as the only accent.
 *
 * Purple is reserved for the logo, "Quill" in the wordmark, primary actions,
 * keyboard focus, progress and selected text. Light is the default; Dark and
 * Automatic soften white to 86% for text, 40% for rules and 14% for fills.
 */

@font-face {
  font-family: "Amiri";
  src: url("../fonts/Amiri-Bold-latin.woff2?v=bdbb8a6c9f") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308,
    U+0329, U+2000-206F, U+20AC, U+2122, U+2190-2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ------------------------------------------------------------------ tokens */

:root {
  color-scheme: light;
  --paper: #ffffff;
  --ink: #000000;
  --line: #000000;
  --wash: #000000;
  --inverse: #ffffff;
  --faint: rgb(0 0 0 / 0.4);
  --purple: #6e4cc2;
  --on-purple: #ffffff;
  --mark: var(--purple);

  /* Terminal blocks stay ink-dark in both appearances. */
  --term-bg: #000000;
  --term-ink: #ffffff;
  --term-line: #000000;
  --term-rule: rgb(255 255 255 / 0.4);
  --term-wash: rgb(255 255 255 / 0.14);

  --font-display: "Amiri", "Big Caslon", Georgia, serif;
  --font-text: "Iowan Old Style", "Charter", "Bitstream Charter", "Sitka Text", "Palatino Linotype", Cambria, Georgia, serif;
  --font-label: "Avenir Next", "Helvetica Neue", "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --container: 76rem;
  --gutter: clamp(1rem, 0.6rem + 2vw, 2rem);
  --section-space: clamp(3.5rem, 2rem + 5vw, 7rem);
}

/* Full-strength white on black glares, so the dark theme softens it. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #000000;
    --ink: rgb(255 255 255 / 0.86);
    --line: rgb(255 255 255 / 0.4);
    --wash: rgb(255 255 255 / 0.14);
    --inverse: rgb(255 255 255 / 0.86);
    --faint: rgb(255 255 255 / 0.3);
    --mark: rgb(255 255 255 / 0.86);
    --term-ink: rgb(255 255 255 / 0.86);
    --term-line: rgb(255 255 255 / 0.4);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #000000;
  --ink: rgb(255 255 255 / 0.86);
  --line: rgb(255 255 255 / 0.4);
  --wash: rgb(255 255 255 / 0.14);
  --inverse: rgb(255 255 255 / 0.86);
  --faint: rgb(255 255 255 / 0.3);
  --mark: rgb(255 255 255 / 0.86);
  --term-ink: rgb(255 255 255 / 0.86);
  --term-line: rgb(255 255 255 / 0.4);
}

/* ------------------------------------------------------------------ base */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: 1.5rem;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-text);
  font-size: 1rem;
  line-height: 1.6;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
  max-width: 100%;
}

::selection {
  background: var(--purple);
  color: #ffffff;
}

:focus-visible {
  outline: 2px solid var(--purple);
  outline-offset: 2px;
  border-radius: 0;
}

a {
  color: inherit;
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 2px;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  /* Amiri's line box leaves room for Arabic marks; keep Latin headings tight. */
  line-height: 1.1;
  letter-spacing: 0;
  text-wrap: balance;
}

p {
  margin: 0 0 1em;
  text-wrap: pretty;
}

code,
kbd,
pre {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

strong,
b {
  font-weight: 700;
}

button {
  font: inherit;
}

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--purple);
  color: #ffffff;
  font: 600 0.9375rem/1.2 var(--font-label);
  text-decoration: none;
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: none;
}

.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 1.15em;
  height: 1.15em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: square;
  stroke-linejoin: miter;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* Section labels: small semibold capitals with wide letter spacing. */
.kicker {
  margin: 0;
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.4;
  text-transform: uppercase;
}

.breadcrumbs {
  margin-bottom: 1.25rem;
  font-family: var(--font-label);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.65rem;
}

.lead {
  font-size: clamp(1.125rem, 1.05rem + 0.35vw, 1.3125rem);
  line-height: 1.55;
}

.note {
  font-style: italic;
}

/* ------------------------------------------------------------------ wordmark */

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.wordmark .mark {
  width: 2.4rem;
  height: auto;
  aspect-ratio: 1005 / 842;
  fill: var(--mark);
}

.wordmark-text {
  padding-top: 0.12em;
}

/* "Quill" stays logo purple; "Sail" takes the ink color. Purple on black
 * passes WCAG AA here because the wordmark is large text. */
.quill {
  color: var(--purple);
}

/* ------------------------------------------------------------------ masthead */

.folio {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 1rem;
  margin: 0;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-label);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.4;
  text-transform: uppercase;
}

.nameplate {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  padding: 1rem 0 0.85rem;
  border-bottom: 2px solid var(--line);
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  display: inline-block;
  padding: 0.45rem 0;
  font-family: var(--font-label);
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.4em;
}

/* ------------------------------------------------------------------ buttons */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 3rem;
  padding: 0.7rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-label);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.button:hover {
  background: var(--wash);
  color: var(--inverse);
}

.button-primary {
  border-color: var(--purple);
  background: var(--purple);
  color: var(--on-purple);
}

.button-primary:hover {
  border-color: var(--purple);
  background: var(--wash);
  color: var(--inverse);
}

.button-large {
  min-height: 3.75rem;
  padding: 0.95rem 1.75rem;
  font-size: 1.125rem;
}

.button-small {
  min-height: 2.25rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.875rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-label);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
}

.text-link .icon {
  width: 1.05em;
  height: 1.05em;
}

/* ------------------------------------------------------------------ hero */

.hero {
  padding: clamp(2rem, 1rem + 4vw, 4.5rem) 0 var(--section-space);
}

/* "Where readers write." is about 9.1em wide in Amiri Bold: one line on wide screens. */
.display {
  margin: 0.85rem 0 clamp(1.75rem, 1rem + 2vw, 2.75rem);
  font-size: clamp(2.375rem, 7.15vw - 0.2rem, 5.5rem);
  line-height: 1;
  letter-spacing: -0.012em;
}

/* Amiri's line box leaves room for Arabic marks above and below. Where browsers
 * can, trim it to the Latin capitals and baseline, like the launcher's trim_line_box(). */
@supports (text-box: trim-both cap alphabetic) {
  .display,
  .display-medium,
  .display-small {
    text-box: trim-both cap alphabetic;
  }

  .display {
    margin: 1.4rem 0 clamp(2rem, 1.25rem + 2vw, 3rem);
  }

  .display-medium {
    margin: 1.3rem 0 1.75rem;
  }

  .display-small {
    margin-bottom: 1.75rem;
  }
}

/* Grid tracks never grow past the page on narrow screens. */
.hero-body,
.spotlight,
.steps,
.feature-grid,
.columns,
.trust-list,
.faq,
.closing-grid,
.footer-grid,
.download-feature {
  grid-template-columns: minmax(0, 1fr);
}

.hero-body {
  display: grid;
  gap: 3.5rem;
  padding-top: clamp(1.75rem, 1rem + 2vw, 2.75rem);
  border-top: 1px solid var(--line);
}

@media (min-width: 62rem) {
  .hero-body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 0;
  }

  .hero-copy {
    padding-right: clamp(2.5rem, 4vw, 4.5rem);
  }

  /* A column rule, as between the columns of a printed page. */
  .hero-figure {
    padding-left: clamp(2.5rem, 4vw, 4.5rem);
    border-left: 1px solid var(--line);
  }
}

.hero .lead {
  max-width: 38rem;
  margin-bottom: 2.25rem;
}

.hero-figure {
  margin: 0;
}

.hero-figure figcaption {
  max-width: 30rem;
  margin: 1rem auto 0;
  font-size: 0.9375rem;
  font-style: italic;
  line-height: 1.5;
}

.hero-figure figcaption .kicker {
  display: block;
  margin-bottom: 0.25rem;
  font-style: normal;
}

/* ------------------------------------------------------------------ download */

.download-cta {
  margin: 0;
}

.download-meta {
  margin: 0.8rem 0 0.2rem;
  font-family: var(--font-label);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.45;
}

.download-more {
  margin: 0;
  font-family: var(--font-label);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.45;
}

.download-more .dot {
  margin: 0 0.45rem;
}

/* ------------------------------------------------------------------ terminal */

.install {
  margin-top: 2.5rem;
}

.install-title {
  margin-bottom: 0.7rem;
}

.terminal {
  border: 1px solid var(--term-line);
  background: var(--term-bg);
  color: var(--term-ink);
}

.terminal-tabs {
  display: flex;
  border-bottom: 1px solid var(--term-rule);
}

.terminal-tabs [role="tab"] {
  appearance: none;
  padding: 0.7rem 1.05rem;
  border: 0;
  border-right: 1px solid var(--term-rule);
  border-radius: 0;
  background: transparent;
  color: var(--term-ink);
  font-family: var(--font-label);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
}

.terminal-tabs [role="tab"]:hover {
  background: var(--term-wash);
}

.terminal-tabs [role="tab"][aria-selected="true"] {
  background: var(--term-ink);
  color: var(--term-bg);
}

.terminal-tabs [role="tab"]:focus-visible {
  outline-offset: -4px;
}

.terminal-panel {
  padding: 1rem 1.1rem;
}

.terminal-panel + .terminal-panel {
  border-top: 1px solid var(--term-rule);
}

.terminal-label {
  margin: 0 0 0.55rem;
  font-family: var(--font-label);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.3;
  text-transform: uppercase;
}

.has-tabs .terminal-label {
  display: none;
}

.has-tabs .terminal-panel + .terminal-panel {
  border-top: 0;
}

.terminal-line {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  line-height: 1.5;
}

/* Commands wrap rather than scroll, so the whole command is always visible before it runs. */
.terminal-line code {
  flex: 1;
  min-width: 0;
  font-size: inherit;
  white-space: normal;
  overflow-wrap: anywhere;
}

.prompt {
  flex: none;
  user-select: none;
}

.copy {
  display: inline-flex;
  flex: none;
  align-items: center;
  gap: 0.4rem;
  padding: 0.42rem 0.7rem;
  border: 1px solid var(--term-rule);
  border-radius: 0;
  background: transparent;
  color: var(--term-ink);
  font-family: var(--font-label);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
}

.copy:hover {
  background: var(--term-wash);
}

.copy .icon {
  width: 1rem;
  height: 1rem;
}

.copy-small {
  padding: 0.3rem 0.5rem;
  border-color: var(--line);
  color: var(--ink);
  font-size: 0.75rem;
}

.copy-small:hover {
  background: var(--wash);
  color: var(--inverse);
}

.install-note {
  margin: 0.8rem 0 0;
  font-size: 0.9375rem;
  font-style: italic;
  line-height: 1.5;
}

.install-note code {
  font-style: normal;
}

/* ------------------------------------------------------------------ launcher drawing */

.window {
  max-width: 30rem;
  margin-inline: auto;
  border: 1px solid var(--line);
  background: var(--paper);
}

.window-bar {
  position: relative;
  display: flex;
  align-items: center;
  height: 2.1rem;
  padding: 0 0.75rem;
  border-bottom: 1px solid var(--line);
}

.window-controls {
  display: flex;
  gap: 0.4rem;
}

.window-controls i {
  width: 0.7rem;
  height: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.window-title {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 600;
}

.launcher {
  padding: 1.15rem 1.5rem 1.1rem;
  font-family: var(--font-text);
  font-size: 0.8125rem;
  line-height: 1.45;
}

.launcher p {
  margin: 0;
}

.launcher-nameplate {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-bottom: 0.45rem;
  border-bottom: 2px solid var(--line);
}

.launcher .mark {
  width: 2.3rem;
  height: auto;
  aspect-ratio: 1005 / 842;
  fill: var(--mark);
}

.launcher-wordmark {
  padding-top: 0.12em;
  font-family: var(--font-display);
  font-size: 2.05rem;
  font-weight: 700;
  line-height: 1;
}

.launcher-tagline {
  padding: 0.45rem 0 0.5rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.875rem;
  font-style: italic;
}

.launcher-group {
  display: grid;
  gap: 0.45rem;
  padding: 0.7rem 0 0.75rem;
  border-bottom: 1px solid var(--line);
}

.launcher-kicker {
  font-family: var(--font-label);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1.3;
  text-transform: uppercase;
}

.launcher-select {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.38rem 0.55rem;
  border: 1px solid var(--line);
}

.launcher-select .icon {
  width: 0.9rem;
  height: 0.9rem;
}

.launcher-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.launcher-button {
  display: inline-flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: center;
  padding: 0.36rem 0.55rem;
  border: 1px solid var(--line);
  font-family: var(--font-label);
  font-size: 0.71875rem;
  font-weight: 500;
  line-height: 1.25;
  white-space: nowrap;
}

.launcher-primary {
  padding: 0.6rem;
  border-color: var(--purple);
  background: var(--purple);
  color: #ffffff;
  font-size: 0.8125rem;
  font-weight: 600;
}

.launcher-status {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.05;
}

.launcher-note {
  font-size: 0.75rem;
  font-style: italic;
}

.launcher-updates {
  flex-wrap: nowrap;
  align-items: center;
}

.launcher-label {
  font-size: 0.78rem;
  white-space: nowrap;
}

.launcher-select-small {
  flex: none;
  min-width: 4.5rem;
  padding-block: 0.3rem;
}

.launcher-grow {
  flex: 1 1 auto;
}

.launcher-text {
  font-size: 0.78rem;
}

.launcher-appearance {
  grid-auto-flow: column;
  align-items: center;
  justify-content: space-between;
}

.launcher-segments {
  display: inline-flex;
  gap: 0.35rem;
}

.launcher-segment {
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--line);
  font-family: var(--font-label);
  font-size: 0.6875rem;
  font-weight: 500;
  line-height: 1.2;
}

/* The drawing shows the same appearance as the page. */
:root:not([data-appearance]) .launcher-segment[data-for="light"],
[data-appearance="light"] .launcher-segment[data-for="light"],
[data-appearance="dark"] .launcher-segment[data-for="dark"],
[data-appearance="auto"] .launcher-segment[data-for="auto"] {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.launcher-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.75rem;
}

.launcher-footer .launcher-button {
  flex: none;
}

.launcher-version {
  margin-top: 0.3rem !important;
  font-size: 0.5625rem;
}

/* Keep the desktop opening within one viewport. Content can still grow when
 * text is enlarged; the launcher is an illustration, so scale it as a whole. */
@media (min-width: 62rem) {
  .page-home {
    --hero-preview-scale: 0.74;
  }

  .page-home .nameplate {
    padding-block: 0.7rem;
  }

  .page-home .hero {
    display: grid;
    align-content: center;
    min-height: calc(100svh - 6rem);
    padding-block: 1rem;
  }

  .page-home .display {
    grid-column: 1;
    grid-row: 2;
    margin: 0 0 1.5rem;
  }

  .page-home .hero > .container {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-home .hero > .container > .kicker {
    grid-column: 1;
    grid-row: 1;
    margin-bottom: 1rem;
  }

  .page-home .hero-body {
    display: contents;
  }

  .page-home .hero-copy {
    grid-column: 1;
    grid-row: 3;
    padding-top: 1.5rem;
    border-top: 1px solid var(--line);
  }

  .page-home .hero-figure {
    grid-column: 2;
    grid-row: 2 / 4;
    align-self: start;
  }

  .page-home .hero .lead {
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
    line-height: 1.5;
  }

  .page-home .hero .button-large {
    min-height: 3rem;
    padding: 0.7rem 1.25rem;
    font-size: 1rem;
  }

  .page-home .hero .download-meta {
    margin-top: 0.5rem;
  }

  .page-home .hero .install {
    margin-top: 2rem;
  }

  .page-home .hero .install-title {
    margin-bottom: 0.5rem;
  }

  .page-home .hero .terminal-tabs [role="tab"] {
    padding: 0.5rem 0.85rem;
  }

  .page-home .hero .terminal-panel {
    padding: 0.75rem 0.9rem;
  }

  .page-home .hero .install-note {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    line-height: 1.4;
  }

  .page-home .hero-figure .window {
    zoom: var(--hero-preview-scale);
  }

  .page-home .hero-figure figcaption {
    margin-top: 0.5rem;
    font-size: 0.8125rem;
    line-height: 1.4;
  }

  .page-home .hero-figure figcaption .kicker {
    font-size: 0.6875rem;
    margin-bottom: 0.2rem;
  }
}

@media (min-width: 62rem) and (max-height: 56.24rem) {
  .page-home .display {
    font-size: clamp(2.375rem, 5.3vw, 4.5rem);
  }
}

@media (min-width: 62rem) and (min-height: 48rem) {
  .page-home {
    --hero-preview-scale: 0.8;
  }
}

@media (min-width: 62rem) and (min-height: 50rem) {
  .page-home {
    --hero-preview-scale: 0.85;
  }
}

@media (min-width: 62rem) and (min-height: 56.25rem) {
  .page-home {
    --hero-preview-scale: 1;
  }
}

@media (min-width: 62rem) and (max-height: 44rem) {
  .page-home {
    --hero-preview-scale: 0.61;
  }

  .page-home .hero {
    padding-block: 0.75rem;
  }

  .page-home .hero .lead {
    margin-bottom: 0.75rem;
    font-size: 1.125rem;
    line-height: 1.45;
  }

  .page-home .display {
    margin-bottom: 1rem;
    font-size: clamp(2.375rem, 4.8vw, 4rem);
  }

  .page-home .hero-copy {
    padding-top: 0.75rem;
  }

  .page-home .hero .install {
    margin-top: 1rem;
  }
}

/* ------------------------------------------------------------------ sections */

.section {
  padding-block: var(--section-space);
  border-top: 1px solid var(--line);
}

.section-head {
  display: grid;
  gap: 0.9rem;
  max-width: 50rem;
  margin-bottom: clamp(2rem, 1rem + 3vw, 3.5rem);
}

.section-head h2 {
  font-size: clamp(2.25rem, 1.4rem + 3.2vw, 4.125rem);
  line-height: 1.02;
}

/* Steps */

.steps {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--line);
}

.steps li {
  padding: 1.5rem 0 1.75rem;
  border-bottom: 1px solid var(--line);
}

.step-number {
  display: block;
  margin-bottom: 0.9rem;
  font-family: var(--font-display);
  font-size: clamp(3rem, 2rem + 2.5vw, 4.5rem);
  font-weight: 700;
  line-height: 1;
}

.steps h3 {
  margin-bottom: 0.6rem;
  font-size: 1.625rem;
}

.steps p {
  margin: 0;
}

@media (min-width: 46rem) {
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps li:nth-child(odd) {
    padding-right: 2rem;
  }

  .steps li:nth-child(even) {
    padding-left: 2rem;
    border-left: 1px solid var(--line);
  }
}

@media (min-width: 72rem) {
  .steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .steps li,
  .steps li:nth-child(odd),
  .steps li:nth-child(even) {
    padding: 1.75rem 1.75rem 0.5rem;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .steps li:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .steps li:last-child {
    padding-right: 0;
  }
}

/* Spotlights */

.spotlight {
  display: grid;
  gap: clamp(2.5rem, 1rem + 4vw, 5rem);
  align-items: center;
}

@media (min-width: 62rem) {
  .spotlight {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }

  .spotlight-reverse {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .spotlight-reverse .spotlight-copy {
    order: 2;
  }
}

.spotlight-copy h2 {
  margin: 0.9rem 0 1.25rem;
  font-size: clamp(2.25rem, 1.4rem + 3vw, 3.75rem);
  line-height: 1.02;
}

.spotlight-copy > p:not(.kicker) {
  font-size: 1.0625rem;
}

.spotlight-figure {
  margin: 0;
}

.checklist {
  margin: 1.6rem 0 2rem;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.checklist li {
  position: relative;
  padding: 0.7rem 0 0.7rem 1.85rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-label);
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.4;
}

.checklist li::before {
  content: "";
  position: absolute;
  top: 1rem;
  left: 0.15rem;
  width: 0.8rem;
  height: 0.42rem;
  border-bottom: 2px solid currentColor;
  border-left: 2px solid currentColor;
  transform: rotate(-45deg);
}

/* Sheets: product drawings on paper. */

.sheet {
  border: 1px solid var(--line);
  background: var(--paper);
}

.sheet-body {
  padding: clamp(1.25rem, 0.9rem + 1.5vw, 2.1rem);
}

.sheet-body p {
  margin: 0;
}

.sheet-kicker,
.sheet-label,
.item-kind {
  font-family: var(--font-label);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.4;
  text-transform: uppercase;
}

.sheet-title {
  margin: 0.5rem 0 0.65rem !important;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2.05rem);
  font-weight: 700;
  line-height: 1.1;
}

.sheet-byline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--line);
  font-family: var(--font-label);
  font-size: 0.875rem;
  font-weight: 500;
}

.tag {
  padding: 0.1rem 0.45rem;
  border: 1px solid var(--line);
  font-family: var(--font-label);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.4;
  text-transform: uppercase;
}

.timeline {
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 0.75rem minmax(0, 1fr);
  column-gap: 0.95rem;
  row-gap: 0.15rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line);
}

.timeline li::before {
  content: "";
  grid-row: 1 / span 2;
  grid-column: 1;
  width: 0.7rem;
  height: 0.7rem;
  margin-top: 0.3rem;
  background: var(--ink);
}

.timeline li > span {
  grid-column: 2;
}

/* Purple marks progress: the step the piece has reached. */
.timeline .is-current::before {
  background: var(--purple);
}

.timeline .is-next::before {
  border: 1px solid var(--ink);
  background: transparent;
}

.timeline-status {
  font-family: var(--font-label);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.35;
}

.timeline-detail,
.timeline-quote {
  font-size: 0.9375rem;
  line-height: 1.45;
}

.timeline-quote {
  font-style: italic;
}

.sheet-label {
  margin: 1.4rem 0 0.55rem !important;
}

.issue-items {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--line);
}

.issue-items li {
  display: grid;
  grid-template-columns: 4.75rem minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
}

.item-title {
  font-size: 0.9375rem;
  line-height: 1.35;
}

.item-audience {
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}

.item-audience.is-targeted {
  padding: 0.18rem 0.45rem;
  border: 1px solid var(--line);
  font-weight: 600;
}

.variants {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.variant {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--line);
  font-family: var(--font-label);
  font-size: 0.8125rem;
  font-weight: 500;
}

.variant b {
  margin-right: 0.35rem;
}

.sheet-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.45rem;
  margin-top: 1.4rem;
}

.sheet-actions .launcher-button {
  flex: none;
  padding: 0.45rem 0.8rem;
  font-size: 0.8125rem;
}

@media (max-width: 30rem) {
  .issue-items li {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .issue-items .item-kind {
    grid-column: 1 / -1;
  }
}

/* Features */

.feature-grid {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--line);
}

.feature-grid li {
  padding: 1.5rem 0 1.75rem;
  border-bottom: 1px solid var(--line);
}

.feature-grid h3 {
  margin-bottom: 0.55rem;
  font-size: 1.4375rem;
}

.feature-grid p {
  margin: 0;
}

@media (min-width: 42rem) and (max-width: 63.99rem) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-grid li:nth-child(odd) {
    padding-right: 1.75rem;
  }

  .feature-grid li:nth-child(even) {
    padding-left: 1.75rem;
    border-left: 1px solid var(--line);
  }
}

@media (min-width: 64rem) {
  .feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .feature-grid li {
    padding: 1.6rem 1.9rem 1.85rem;
  }

  .feature-grid li:nth-child(3n + 1) {
    padding-left: 0;
  }

  .feature-grid li:nth-child(3n) {
    padding-right: 0;
  }

  .feature-grid li:not(:nth-child(3n + 1)) {
    border-left: 1px solid var(--line);
  }
}

/* Columns */

.columns {
  display: grid;
  border-top: 2px solid var(--line);
}

.column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1.6rem 0 2rem;
  border-bottom: 1px solid var(--line);
}

.column h3 {
  font-size: 1.75rem;
}

.column p {
  margin: 0;
}

.column .text-link {
  margin-top: auto;
  padding-top: 0.5rem;
}

@media (min-width: 58rem) {
  .columns {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .column {
    padding: 1.75rem 2rem 0.5rem;
    border-bottom: 0;
  }

  .column:first-child {
    padding-left: 0;
  }

  .column:last-child {
    padding-right: 0;
  }

  .column + .column {
    border-left: 1px solid var(--line);
  }
}

.code-snippet {
  align-self: stretch;
  margin: 0.25rem 0;
  padding: 0.75rem 1rem;
  overflow-x: auto;
  border: 1px solid var(--term-line);
  background: var(--term-bg);
  color: var(--term-ink);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.45;
}

.code-snippet code {
  font-size: inherit;
  white-space: normal;
  overflow-wrap: anywhere;
}

/* Trust */

.trust-list {
  display: grid;
  margin: 0;
  border-top: 2px solid var(--line);
}

.trust-list > div {
  padding: 1.5rem 0 1.75rem;
  border-bottom: 1px solid var(--line);
}

.trust-list dt {
  margin-bottom: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.1;
}

.trust-list dd {
  margin: 0;
}

@media (min-width: 46rem) {
  .trust-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trust-list > div:nth-child(odd) {
    padding-right: 2rem;
  }

  .trust-list > div:nth-child(even) {
    padding-left: 2rem;
    border-left: 1px solid var(--line);
  }
}

@media (min-width: 72rem) {
  .trust-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .trust-list > div,
  .trust-list > div:nth-child(odd),
  .trust-list > div:nth-child(even) {
    padding: 1.6rem 1.75rem 0.5rem;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .trust-list > div:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .trust-list > div:last-child {
    padding-right: 0;
  }
}

.origin {
  max-width: 48rem;
  margin-top: clamp(2.5rem, 1.5rem + 3vw, 4rem);
  padding-left: 1.5rem;
  border-left: 2px solid var(--line);
}

.origin p:last-child {
  margin: 0.6rem 0 0;
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.3125rem);
  line-height: 1.5;
}

/* Questions */

.faq {
  display: grid;
  gap: 1rem 4rem;
}

@media (min-width: 62rem) {
  .faq {
    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
    align-items: start;
  }
}

.faq-list {
  border-top: 2px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.15rem 0;
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.2;
  list-style: none;
  cursor: pointer;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-label);
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details p {
  max-width: 44rem;
  margin: 0 0 1.4rem;
}

/* Closing call to action */

.closing-grid {
  display: grid;
  gap: 2.5rem 4rem;
}

@media (min-width: 62rem) {
  .closing-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

.display-small {
  margin-bottom: 1.25rem;
  font-size: clamp(2.75rem, 1.4rem + 4.6vw, 5.5rem);
  line-height: 1;
}

.closing .install {
  margin-top: 2rem;
}

/* ------------------------------------------------------------------ footer */

.site-footer {
  padding: clamp(2.5rem, 1.5rem + 3vw, 4rem) 0 2rem;
  border-top: 2px solid var(--line);
}

.footer-grid {
  display: grid;
  gap: 2.25rem 2rem;
}

@media (min-width: 46rem) {
  .footer-grid {
    grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr));
  }
}

.footer-brand .wordmark {
  font-size: 1.65rem;
}

.footer-brand .wordmark .mark {
  width: 2rem;
}

.footer-motto {
  margin: 0.85rem 0 0.6rem;
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.1;
}

.footer-brand p:last-child {
  max-width: 24rem;
  margin: 0;
  font-size: 0.9375rem;
}

.footer-links ul {
  display: grid;
  gap: 0.35rem;
  margin: 0.8rem 0 0;
  padding: 0;
  list-style: none;
}

.footer-links a {
  font-family: var(--font-label);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.875rem;
  font-style: italic;
}

.footer-base p {
  margin: 0;
}

/* Appearance: the same three choices as the launcher. */

.appearance {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.85rem;
  font-style: normal;
}

.segments {
  display: inline-flex;
  gap: 0.4rem;
}

.segment {
  appearance: none;
  padding: 0.42rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-label);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1;
  cursor: pointer;
}

.segment:hover {
  background: var(--wash);
  color: var(--inverse);
}

.segment[aria-pressed="true"] {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

/* ------------------------------------------------------------------ pages */

.page {
  padding-top: clamp(2.25rem, 1rem + 4vw, 4.5rem);
  padding-bottom: var(--section-space);
}

.page-head {
  max-width: 50rem;
  margin-bottom: clamp(2rem, 1rem + 2vw, 3rem);
}

.display-medium {
  margin: 0.85rem 0 1.25rem;
  font-size: clamp(2.75rem, 1.4rem + 4.6vw, 5.25rem);
  line-height: 1;
}

.notice {
  margin-bottom: 2.5rem;
  padding: 1.25rem 1.5rem 1.4rem;
  border: 2px solid var(--line);
}

.notice h2 {
  margin-bottom: 0.5rem;
  font-size: 1.75rem;
}

.download-feature {
  display: grid;
  gap: 2.5rem 4rem;
  padding: 2rem 0 3rem;
  border-top: 2px solid var(--line);
}

.download-feature .kicker {
  margin-bottom: 1rem;
}

.download-feature .install {
  margin-top: 0;
}

@media (min-width: 62rem) {
  .download-feature {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

.section-plain {
  padding: clamp(2.25rem, 1.5rem + 2vw, 3.25rem) 0;
  border-top: 1px solid var(--line);
}

.section-plain > h2 {
  margin-bottom: 1.5rem;
  font-size: clamp(1.875rem, 1.4rem + 1.6vw, 2.75rem);
}

.section-plain .columns {
  border-top-width: 1px;
}

.table-wrap {
  position: relative;
  overflow-x: auto;
}

.downloads {
  width: 100%;
  min-width: 46rem;
  border-collapse: collapse;
  font-family: var(--font-label);
  font-size: 0.9375rem;
  line-height: 1.4;
}

.downloads th,
.downloads td {
  padding: 0.9rem 1.25rem 0.9rem 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

.downloads thead th {
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
  border-top: 2px solid var(--line);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.downloads tbody tr:last-child > * {
  border-bottom: 2px solid var(--line);
}

.downloads tbody th {
  font-weight: 500;
}

.downloads code {
  font-size: 0.8125rem;
}

.platform-name {
  font-weight: 700;
}

.downloads .numeric {
  white-space: nowrap;
}

.downloads .action {
  padding-right: 0;
  text-align: right;
}

.downloads .is-detected th::after {
  content: "This computer";
  display: block;
  margin-top: 0.2rem;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.digest {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.table-note,
.file-line {
  margin: 1rem 0 0;
  font-family: var(--font-label);
  font-size: 0.875rem;
}

.file-line {
  margin: 0;
}

.next-steps {
  margin: 0;
  padding-left: 1.25rem;
}

.next-steps li + li {
  margin-top: 0.45rem;
}

.notice .next-steps {
  margin-top: 1rem;
}

.columns-tight .column {
  gap: 0.75rem;
}

.verification > * {
  max-width: 50rem;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ------------------------------------------------------------------ small screens */

@media (max-width: 40rem) {
  .nameplate {
    padding-top: 0.85rem;
  }

  .site-nav ul {
    gap: 0 1.1rem;
  }

  .site-nav li:first-child {
    display: none;
  }

  .terminal-line {
    flex-wrap: wrap;
    align-items: flex-start;
    font-size: 0.875rem;
  }

  .terminal-line code {
    flex-basis: calc(100% - 2rem);
  }

  .terminal-line .copy {
    margin-left: auto;
  }

  .terminal-tabs [role="tab"] {
    padding-inline: 0.85rem;
  }

  .launcher {
    padding-inline: 1.1rem;
  }

  .launcher-updates {
    flex-wrap: wrap;
  }
}

/* Windows High Contrast and other forced colors keep borders visible. */
@media (forced-colors: active) {
  .button-primary,
  .launcher-primary,
  .segment[aria-pressed="true"],
  .terminal-tabs [role="tab"][aria-selected="true"] {
    border: 2px solid CanvasText;
  }
}