/* ==========================================================================
   Forge landing page
   A terminal-native visual system: ink, graphite and one amber accent.
   ========================================================================== */

:root {
  --bg: #0b0d10;
  --bg-soft: #0c0f14;
  --bg-raised: #11161d;
  --bg-terminal: #0d1117;
  --text: #e6edf3;
  --text-soft: #b7c0cb;
  --muted: #8b949e;
  --faint: #7d8792;
  --line: rgba(230, 237, 243, 0.14);
  --line-soft: rgba(230, 237, 243, 0.075);
  --accent: #f0b44c;
  --accent-bright: #ffc865;
  --accent-dim: rgba(240, 180, 76, 0.12);
  --green: #3fb950;
  --red: #ff7b72;
  --max: 1440px;
  --gutter: clamp(24px, 4.4vw, 64px);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", "DejaVu Sans Mono",
    "Noto Sans Mono", Consolas, "Liberation Mono", monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
  background: var(--bg);
  scrollbar-color: #30363d var(--bg);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection {
  background: var(--accent);
  color: #16120a;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

button,
summary {
  font: inherit;
}

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

code {
  font-size: 0.9em;
  color: var(--text);
  background: rgba(230, 237, 243, 0.07);
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  padding: 0.1em 0.38em;
}

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.9em;
  padding: 2px 6px;
  border: 1px solid rgba(230, 237, 243, 0.18);
  border-bottom-color: rgba(230, 237, 243, 0.34);
  border-radius: 4px;
  background: #151a21;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.45);
  color: #d7dee8;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.55;
  white-space: nowrap;
}

em {
  font-style: normal;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 6px;
  background: var(--accent);
  color: #16120a;
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform 160ms var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: 72px;
  transition: background 240ms var(--ease), border-color 240ms var(--ease),
    backdrop-filter 240ms var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(11, 13, 16, 0.82);
  border-bottom-color: var(--line-soft);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}

.header-inner {
  width: min(var(--max), 100% - var(--gutter) * 2);
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  flex-shrink: 0;
}

.brand-mark {
  display: block;
}

.brand-word {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.13em;
}

.brand-tag {
  margin-left: 2px;
  padding: 2px 5px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 34px);
  font-size: 14px;
}

.site-nav a {
  color: var(--muted);
  transition: color 160ms ease;
}

.site-nav a:hover {
  color: var(--text);
}

.site-nav .nav-github {
  margin-left: 8px;
  padding-left: 22px;
  border-left: 1px solid var(--line);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 17px;
  height: 1px;
  margin: 4px auto;
  background: currentColor;
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(2.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-2.5px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: clamp(120px, 15vh, 176px) 0 clamp(56px, 7vh, 88px);
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
}

.hero-glow {
  position: absolute;
  top: 8%;
  right: -8%;
  width: min(920px, 74vw);
  height: min(760px, 68vw);
  background: radial-gradient(
    ellipse at 52% 48%,
    rgba(240, 180, 76, 0.16),
    rgba(240, 180, 76, 0.045) 40%,
    transparent 70%
  );
  pointer-events: none;
}

.hero-grid-lines {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(90deg, rgba(0, 0, 0, 0.9), transparent 68%),
    linear-gradient(180deg, transparent, #000 22%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(90deg, rgba(0, 0, 0, 0.9), transparent 68%),
    linear-gradient(180deg, transparent, #000 22%, #000 70%, transparent);
  mask-composite: intersect;
  -webkit-mask-composite: source-in;
  opacity: 0.5;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(var(--max), 100% - var(--gutter) * 2);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.42fr);
  gap: clamp(36px, 4.5vw, 80px);
  align-items: center;
}

.hero-copy {
  max-width: 590px;
}

.kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 26px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.kicker-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 14px rgba(240, 180, 76, 0.7);
}

.hero h1 {
  margin: 0;
  font-size: clamp(3.2rem, 6.05vw, 5.9rem);
  font-weight: 800;
  line-height: 1.01;
  letter-spacing: -0.045em;
}

.hero h1 em {
  color: var(--accent);
  text-shadow: 0 0 46px rgba(240, 180, 76, 0.14);
}

.hero-lede {
  margin: 30px 0 0;
  max-width: 540px;
  color: var(--text-soft);
  font-size: clamp(16px, 1.25vw, 18px);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 46px;
  padding: 0 21px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 650;
  letter-spacing: 0.01em;
  transition: transform 180ms var(--ease), background 180ms ease,
    border-color 180ms ease, box-shadow 180ms ease;
}

.button span {
  font-family: var(--font-mono);
  font-size: 15px;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #171208;
  box-shadow: 0 10px 32px rgba(240, 180, 76, 0.13);
}

.button-primary:hover {
  background: var(--accent-bright);
  border-color: var(--accent-bright);
  box-shadow: 0 14px 38px rgba(240, 180, 76, 0.2);
}

.button-ghost {
  border-color: var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.015);
}

.button-ghost:hover {
  border-color: rgba(240, 180, 76, 0.5);
  background: var(--accent-dim);
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
}

.hero-notes li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-notes li::before {
  content: "";
  width: 3px;
  height: 3px;
  background: var(--accent);
  border-radius: 50%;
}

.hero-visual {
  min-width: 0;
  margin: 0 calc(-1 * max(var(--gutter), (100vw - 1440px) / 2)) 0 0;
}

.terminal-frame {
  display: block;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(230, 237, 243, 0.16);
  border-radius: 12px;
  background: var(--bg-terminal);
  box-shadow: 0 36px 90px rgba(0, 0, 0, 0.56),
    0 0 0 1px rgba(240, 180, 76, 0.05),
    0 0 70px rgba(240, 180, 76, 0.055);
  transition: transform 420ms var(--ease), box-shadow 420ms var(--ease);
}

a.terminal-frame:hover {
  transform: translateY(-4px);
  box-shadow: 0 46px 110px rgba(0, 0, 0, 0.62),
    0 0 0 1px rgba(240, 180, 76, 0.18),
    0 0 90px rgba(240, 180, 76, 0.09);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 36px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line-soft);
  background: #161b22;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #30363d;
}

.terminal-dots i:first-child {
  background: var(--accent);
  opacity: 0.85;
}

.terminal-title,
.terminal-size {
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.05em;
}

.terminal-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.terminal-size {
  white-space: nowrap;
}

.terminal-frame img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--bg-terminal);
}

.hero-visual figcaption,
.shot-block figcaption {
  margin-top: 13px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-align: right;
}

.hero-visual figcaption {
  padding-right: 12px;
}

/* --------------------------------------------------------------------------
   Proof strip
   -------------------------------------------------------------------------- */

.proof-strip {
  border-bottom: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, 0.012);
}

.proof-inner {
  width: min(var(--max), 100% - var(--gutter) * 2);
  margin: 0 auto;
  padding: 18px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 0;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.proof-inner span {
  display: inline-flex;
  align-items: center;
}

.proof-inner span + span::before {
  content: "/";
  margin: 0 18px;
  color: rgba(230, 237, 243, 0.18);
}

/* --------------------------------------------------------------------------
   Shared section furniture
   -------------------------------------------------------------------------- */

.section {
  position: relative;
  padding: clamp(86px, 9.5vw, 142px) var(--gutter);
  scroll-margin-top: 88px;
}

.section > * {
  width: min(var(--max), 100%);
  margin-left: auto;
  margin-right: auto;
}

.eyebrow {
  margin: 0 0 22px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section h2 {
  margin: 0;
  font-size: clamp(2.2rem, 4.6vw, 4.35rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.section h2 em {
  color: var(--accent);
}

.section-head {
  max-width: 760px;
  margin-bottom: clamp(48px, 6vw, 78px);
}

.section-lede {
  margin: 24px 0 0;
  max-width: 620px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 30px;
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(240, 180, 76, 0.38);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  transition: border-color 180ms ease, color 180ms ease;
}

.text-link:hover {
  border-bottom-color: var(--accent);
  color: var(--accent-bright);
}

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

/* --------------------------------------------------------------------------
   Features
   -------------------------------------------------------------------------- */

.features {
  border-bottom: 1px solid var(--line-soft);
}

.feature-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.feature {
  padding: 30px clamp(20px, 2.8vw, 42px) 4px 0;
  border-right: 1px solid var(--line-soft);
}

.feature + .feature {
  padding-left: clamp(20px, 2.8vw, 42px);
}

.feature:last-child {
  padding-right: 0;
  border-right: 0;
}

.feature-num {
  display: block;
  margin-bottom: 30px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.feature h3 {
  margin: 0;
  font-size: clamp(1.35rem, 1.7vw, 1.65rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.feature p {
  margin: 15px 0 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.85;
}

.feature ul {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.feature li {
  position: relative;
  padding: 10px 0 10px 18px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--text-soft);
  font-size: 12.5px;
  line-height: 1.55;
}

.feature li::before {
  content: "+";
  position: absolute;
  left: 0;
  top: 10px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 10px;
}

/* --------------------------------------------------------------------------
   Diff
   -------------------------------------------------------------------------- */

.diff-section {
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(240, 180, 76, 0.018), transparent 45%);
}

.diff-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(340px, 0.72fr);
  gap: clamp(36px, 5vw, 76px);
  align-items: center;
}

.shot-block {
  margin: 0;
  min-width: 0;
}

.split-copy h2 {
  font-size: clamp(2.1rem, 3.8vw, 3.65rem);
}

.split-copy > p:not(.eyebrow) {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.check-list {
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.check-list li {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 16px;
  align-items: start;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.65;
}

.keys {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
}

/* --------------------------------------------------------------------------
   Themes & composer
   -------------------------------------------------------------------------- */

.theme-section {
  border-bottom: 1px solid var(--line-soft);
  background: radial-gradient(
    ellipse at 14% 18%,
    rgba(240, 180, 76, 0.045),
    transparent 55%
  );
}

.composer-section {
  border-bottom: 1px solid var(--line-soft);
  background: var(--bg-soft);
}

.composer-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(340px, 1.22fr);
  gap: clamp(36px, 5vw, 76px);
  align-items: center;
}

.theme-facts {
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.theme-facts li {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.75;
}

.theme-facts b {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* --------------------------------------------------------------------------
   Keyboard
   -------------------------------------------------------------------------- */

.keyboard-section {
  border-bottom: 1px solid var(--line-soft);
  background: radial-gradient(
      ellipse at 82% 18%,
      rgba(240, 180, 76, 0.05),
      transparent 52%
    ),
    var(--bg-soft);
}

.keyboard-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(40px, 6vw, 100px);
  align-items: center;
}

.keyboard-copy h2 {
  font-size: clamp(2.1rem, 3.9vw, 3.7rem);
}

.keyboard-copy > p:not(.eyebrow) {
  margin: 24px 0 0;
  max-width: 510px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.keyboard-copy kbd {
  margin: 0 2px;
}

.key-list {
  border-top: 1px solid var(--line);
}

.key-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
  transition: color 180ms ease;
}

.key-row:hover {
  color: var(--accent);
}

.key-row:hover .keys kbd {
  border-color: rgba(240, 180, 76, 0.48);
}

.key-desc {
  color: var(--text-soft);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   Workflow
   -------------------------------------------------------------------------- */

.workflow-section {
  border-bottom: 1px solid var(--line-soft);
}

.workflow-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.workflow-list li {
  position: relative;
  padding: 26px 20px 0 0;
  border-top: 1px solid var(--line);
}

.workflow-list li::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(240, 180, 76, 0.55);
}

.step-num {
  display: block;
  margin-bottom: 24px;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.workflow-list h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
}

.workflow-list p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.7;
}

.workflow-list .keys {
  margin-top: 18px;
}

/* --------------------------------------------------------------------------
   Details
   -------------------------------------------------------------------------- */

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

.details-head {
  max-width: 720px;
}

.details-head > p:not(.eyebrow) {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.detail-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 clamp(40px, 6vw, 90px);
  margin: clamp(48px, 6vw, 76px) 0 0;
}

.detail-list > div {
  padding: 22px 0 26px;
  border-top: 1px solid var(--line);
}

.detail-list dt {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.detail-list dd {
  margin: 12px 0 0;
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.85;
}

/* --------------------------------------------------------------------------
   FAQ
   -------------------------------------------------------------------------- */

.faq-section {
  border-bottom: 1px solid var(--line-soft);
  background: var(--bg-soft);
}

.faq-inner {
  display: grid;
  grid-template-columns: minmax(220px, 0.52fr) minmax(0, 1.48fr);
  gap: clamp(40px, 7vw, 120px);
  align-items: start;
}

.faq-head {
  position: sticky;
  top: 108px;
}

.faq-head h2 {
  font-size: clamp(2.2rem, 3.4vw, 3.25rem);
}

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

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

.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 0;
  color: var(--text);
  font-size: 16px;
  font-weight: 550;
  cursor: pointer;
  list-style: none;
}

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

.faq-list summary::after {
  content: "+";
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
  transition: transform 200ms var(--ease);
}

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

.faq-list summary:hover {
  color: var(--accent);
}

.faq-list p {
  margin: 0;
  padding: 0 0 22px;
  max-width: 760px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

/* --------------------------------------------------------------------------
   Install
   -------------------------------------------------------------------------- */

.install-section {
  position: relative;
  overflow: hidden;
  background: radial-gradient(
      ellipse at 76% 48%,
      rgba(240, 180, 76, 0.09),
      transparent 58%
    ),
    var(--bg);
}

.install-section::before {
  content: "forge";
  position: absolute;
  right: -0.06em;
  bottom: -0.28em;
  z-index: 0;
  color: transparent;
  font-family: var(--font-mono);
  font-size: clamp(220px, 30vw, 520px);
  font-weight: 700;
  line-height: 0.8;
  letter-spacing: -0.08em;
  -webkit-text-stroke: 1px rgba(230, 237, 243, 0.055);
  pointer-events: none;
  user-select: none;
}

.install-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
}

.install-copy h2 {
  font-size: clamp(2.5rem, 5vw, 4.8rem);
}

.install-copy > p:not(.eyebrow) {
  margin: 24px 0 0;
  max-width: 420px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.install-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
  margin-top: 34px;
}

.install-actions .text-link {
  margin-top: 0;
}

.install-terminal {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-terminal);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  overflow: hidden;
}

.install-terminal-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 40px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line-soft);
  background: #161b22;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.copy-button {
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease,
    background 160ms ease;
}

.copy-button:hover,
.copy-button.copied {
  border-color: rgba(240, 180, 76, 0.55);
  background: var(--accent-dim);
  color: var(--accent);
}

.install-terminal pre {
  margin: 0;
  padding: 24px 22px;
  overflow-x: auto;
  color: #d7dee8;
  font-size: 12.5px;
  line-height: 1.95;
  tab-size: 2;
}

.install-terminal code {
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font-size: inherit;
}

.c-muted {
  color: var(--faint);
}

.c-keyword {
  color: var(--accent);
}

.copy-status {
  min-height: 18px;
  margin: 0;
  padding: 0 22px 14px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.site-footer {
  padding: 52px 0 46px;
  border-top: 1px solid var(--line-soft);
  background: #090b0e;
}

.footer-inner {
  width: min(var(--max), 100% - var(--gutter) * 2);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 26px 48px;
  align-items: start;
}

.footer-brand p {
  margin: 14px 0 0;
  max-width: 360px;
  color: var(--faint);
  font-size: 12px;
  line-height: 1.8;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-meta {
  grid-column: 1 / -1;
  margin: 24px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
}

/* --------------------------------------------------------------------------
   Reveal motion
   -------------------------------------------------------------------------- */

html.js.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}

html.js.reveal-ready [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

.hero-copy > [data-reveal]:nth-child(2) {
  transition-delay: 80ms;
}

.hero-copy > [data-reveal]:nth-child(3) {
  transition-delay: 150ms;
}

.hero-copy > [data-reveal]:nth-child(4) {
  transition-delay: 220ms;
}

.hero-copy > [data-reveal]:nth-child(5) {
  transition-delay: 290ms;
}

.hero-visual[data-reveal] {
  transition-delay: 180ms;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1240px) {
  .hero-inner {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.38fr);
    gap: 36px;
  }

  .hero h1 {
    font-size: clamp(3rem, 5.7vw, 5rem);
  }

  .workflow-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    row-gap: 44px;
  }
}

@media (max-width: 1080px) {
  .diff-inner,
  .composer-inner,
  .keyboard-inner,
  .install-inner {
    grid-template-columns: 1fr;
  }

  .diff-section .shot-block,
  .theme-section .shot-block {
    order: 2;
  }

  .diff-inner .split-copy {
    order: 1;
  }

  .keyboard-copy > p:not(.eyebrow) {
    max-width: 620px;
  }

  .faq-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .faq-head {
    position: static;
  }

  .install-copy > p:not(.eyebrow) {
    max-width: 560px;
  }
}

@media (max-width: 980px) {
  .site-header {
    height: 64px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    display: grid;
    gap: 0;
    padding: 8px var(--gutter) 20px;
    border-bottom: 1px solid var(--line);
    background: rgba(10, 12, 15, 0.97);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 200ms var(--ease), transform 200ms var(--ease),
      visibility 0s linear 200ms;
  }

  .site-nav a {
    padding: 13px 0;
    border-bottom: 1px solid var(--line-soft);
    font-size: 15px;
  }

  .site-nav .nav-github {
    margin-left: 0;
    padding-left: 0;
    border-left: 0;
    border-bottom: 0;
  }

  .site-header.nav-open .site-nav {
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition-delay: 0s;
  }

  .hero {
    min-height: 0;
    padding-top: 116px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-copy {
    max-width: 680px;
  }

  .hero h1 {
    font-size: clamp(3.3rem, 10vw, 5.4rem);
  }

  .hero-visual {
    margin-right: 0;
  }

  .desktop-only {
    display: none;
  }

  .hero-notes {
    margin-top: 28px;
  }

  .diff-inner,
  .composer-inner {
    gap: 44px;
  }

  .feature-columns {
    grid-template-columns: 1fr;
  }

  .feature,
  .feature + .feature {
    padding: 26px 0 26px;
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .feature:last-child {
    border-bottom: 0;
  }

  .feature-num {
    margin-bottom: 14px;
  }

  .detail-list {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-meta {
    margin-top: 10px;
  }
}

@media (max-width: 720px) {
  :root {
    --gutter: 22px;
  }

  .hero {
    padding-bottom: 48px;
  }

  .hero h1 {
    font-size: clamp(2.85rem, 12vw, 4.5rem);
  }

  .hero-lede {
    font-size: 16px;
  }

  .hero-actions {
    align-items: stretch;
  }

  .button {
    flex: 1 1 auto;
  }

  /* Keep terminal text legible on narrow screens: pan, don't shrink. */
  a.terminal-frame {
    overflow-x: auto;
    overflow-y: hidden;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .terminal-frame .terminal-bar {
    position: sticky;
    left: 0;
    z-index: 2;
  }

  .terminal-frame picture,
  .terminal-frame picture img {
    display: block;
    width: 1440px;
    max-width: none;
    height: auto;
  }

  .terminal-bar {
    height: 32px;
  }

  .terminal-title {
    font-size: 9px;
  }

  .terminal-size {
    display: none;
  }

  .hero-visual figcaption,
  .shot-block figcaption {
    text-align: left;
  }

  .proof-inner {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 16px;
  }

  .proof-inner span + span::before {
    content: none;
  }

  .section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .section h2 {
    font-size: clamp(2rem, 9vw, 3rem);
  }

  .workflow-list {
    grid-template-columns: 1fr;
    row-gap: 0;
  }

  .workflow-list li {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) auto;
    gap: 12px;
    align-items: start;
    padding: 20px 0;
    border-top: 1px solid var(--line);
  }

  .workflow-list li::before {
    top: -3px;
  }

  .step-num {
    margin: 2px 0 0;
  }

  .workflow-list .keys {
    margin-top: 0;
    justify-self: end;
  }

  .check-list li {
    grid-template-columns: 68px 1fr;
    gap: 12px;
  }

  .key-row {
    align-items: flex-start;
    gap: 14px;
  }

  .faq-list summary {
    font-size: 15px;
  }

  .install-terminal pre {
    font-size: 11.5px;
    padding: 20px 16px;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
  }

  .install-section::before {
    font-size: 42vw;
    opacity: 0.7;
  }

  .footer-links {
    gap: 10px 18px;
  }
}

@media (max-width: 460px) {
  .brand-tag {
    display: none;
  }

  .hero-notes {
    gap: 8px 14px;
    font-size: 10px;
  }

  .proof-inner {
    grid-template-columns: 1fr;
  }

  .button {
    flex-basis: 100%;
  }

  .check-list li {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .workflow-list li {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .workflow-list .keys {
    grid-column: 2;
    justify-self: start;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html.js.reveal-ready [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* Responsive real-terminal screenshots on the English landing page. */
.en-shots > figure { min-width: 0; margin: 0; padding: 18px; }
.en-shots .mobile-image-scroll { display: block; overflow: hidden; border: 1px solid var(--line); border-radius: 10px; }
.en-shots .mobile-image-scroll img { display: block; width: 100%; height: auto; object-fit: contain; }
.en-shots > figure figcaption { margin-top: 10px; color: var(--muted); font-size: 13px; }
.image-pan-hint { display: none; margin: 0 0 10px; font: 11px/1.5 var(--font-mono); color: var(--accent); }
@media (max-width: 720px) {
  .en-shots > figure { padding: 18px 0; }
  .en-shots .mobile-image-scroll { overflow-x: auto; overflow-y: hidden; overscroll-behavior-x: contain; -webkit-overflow-scrolling: touch; scrollbar-width: thin; }
  .en-shots .mobile-image-scroll img { width: 1440px; max-width: none; height: auto; }
  .image-pan-hint { display: block; }
}

/* Searchable first-party answers and practical guide */
.answers-section {
  border-top: 1px solid var(--line-soft);
}
.answer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.answer-grid article {
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  background: var(--bg-raised);
  padding: clamp(18px, 2.6vw, 28px);
}
.answer-grid h3 {
  margin: 0 0 12px;
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.4;
}
.answer-grid p {
  margin: 0;
  color: var(--text-soft);
  font-size: 15px;
}
.answers-more {
  margin: 26px 0 0;
  font-size: 15px;
}
.answers-more a, .guide-body a {
  color: var(--accent);
  text-underline-offset: 4px;
  text-decoration: underline;
}
.guide-body {
  width: min(900px, 100% - var(--gutter) * 2);
  margin: 0 auto;
  padding: 145px 0 95px;
  min-height: 85vh;
}
.guide-intro {
  padding-bottom: 30px;
}
.guide-intro h1 {
  margin: 16px 0 18px;
  font-size: clamp(2.4rem, 6vw, 4.8rem);
  line-height: 1.1;
  letter-spacing: -0.045em;
  max-width: 820px;
}
.guide-lead {
  max-width: 750px;
  color: var(--text-soft);
  font-size: clamp(17px, 1.8vw, 20px);
}
.guide-meta {
  color: var(--muted);
  font: 12px/1.7 var(--font-mono);
}
.guide-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 17px;
  padding: 16px 0 22px;
  margin-bottom: 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}
.guide-toc strong { color: var(--text); }
.guide-body section {
  border-bottom: 1px solid var(--line-soft);
  padding: 24px 0 32px;
  scroll-margin-top: 90px;
}
.guide-body section h2 {
  margin: 0 0 15px;
  font-size: clamp(23px, 2.7vw, 32px);
  line-height: 1.3;
}
.guide-body section h3 {
  margin: 27px 0 9px;
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.45;
}
.guide-body section p, .guide-body section li {
  color: var(--text-soft);
  font-size: 16px;
  line-height: 1.85;
}
.guide-body section a { overflow-wrap: anywhere; }
.guide-body pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 19px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--bg-terminal);
  font-size: 13px;
  line-height: 1.7;
}
.guide-body pre code {
  color: var(--text);
  border: 0;
  background: transparent;
  padding: 0;
}
@media (max-width: 720px) {
  .answer-grid { grid-template-columns: 1fr; }
  .guide-body { padding-top: 110px; padding-bottom: 60px; }
  .guide-toc { gap: 12px; }
  .guide-body section p, .guide-body section li { font-size: 15px; }
}